Documentation/admin-guide/kernel-parameters.txt | 9 + Kconfig | 2 + Kconfig.redhat | 17 + Makefile | 12 +- arch/arm/Kconfig | 4 +- arch/arm64/Kconfig | 3 +- arch/arm64/kernel/acpi.c | 4 + arch/s390/include/asm/ipl.h | 1 + arch/s390/kernel/ipl.c | 5 + arch/s390/kernel/setup.c | 4 + arch/x86/kernel/cpu/common.c | 1 + arch/x86/kernel/setup.c | 70 ++- crypto/rng.c | 73 ++- drivers/acpi/apei/hest.c | 8 + drivers/acpi/irq.c | 17 +- drivers/acpi/scan.c | 9 + drivers/ata/libahci.c | 18 + drivers/char/ipmi/ipmi_dmi.c | 15 + drivers/char/ipmi/ipmi_msghandler.c | 16 +- drivers/char/random.c | 115 +++++ drivers/firmware/efi/Makefile | 1 + drivers/firmware/efi/efi.c | 124 +++-- drivers/firmware/efi/secureboot.c | 38 ++ drivers/hid/hid-rmi.c | 64 --- drivers/hwtracing/coresight/coresight-etm4x-core.c | 19 + drivers/input/rmi4/rmi_driver.c | 124 +++-- drivers/iommu/iommu.c | 22 + drivers/message/fusion/mptsas.c | 10 + drivers/message/fusion/mptspi.c | 11 + drivers/net/ethernet/intel/e1000/e1000_main.c | 2 + drivers/net/team/team.c | 2 + drivers/net/wireguard/main.c | 7 + drivers/nvme/host/core.c | 22 +- drivers/nvme/host/multipath.c | 19 +- drivers/nvme/host/nvme.h | 4 + drivers/pci/pci-driver.c | 78 ++++ drivers/pci/quirks.c | 24 + drivers/scsi/aacraid/linit.c | 2 + drivers/scsi/be2iscsi/be_main.c | 2 + drivers/scsi/hpsa.c | 4 + drivers/scsi/lpfc/lpfc_ids.h | 14 + drivers/scsi/megaraid/megaraid_sas_base.c | 4 + drivers/scsi/mpt3sas/mpt3sas_scsih.c | 4 + drivers/scsi/qla2xxx/qla_os.c | 6 + drivers/scsi/qla4xxx/ql4_os.c | 2 + drivers/usb/core/hub.c | 7 + drivers/virtio/virtio_mem.c | 13 + fs/ext4/super.c | 5 + fs/xfs/xfs_super.c | 5 + include/linux/efi.h | 22 +- include/linux/kernel.h | 19 + include/linux/lsm_hook_defs.h | 2 + include/linux/lsm_hooks.h | 6 + include/linux/mmzone.h | 4 +- include/linux/module.h | 1 + include/linux/panic.h | 19 +- include/linux/pci.h | 16 + include/linux/random.h | 7 + include/linux/rh_kabi.h | 515 +++++++++++++++++++++ include/linux/rmi.h | 1 + include/linux/security.h | 5 + init/Kconfig | 2 +- kernel/Makefile | 1 + kernel/bpf/syscall.c | 18 + kernel/module.c | 2 + kernel/module_signing.c | 9 +- kernel/panic.c | 14 + kernel/rh_messages.c | 179 +++++++ kernel/sysctl.c | 5 + mm/cma.c | 10 + scripts/mod/modpost.c | 8 + scripts/tags.sh | 2 + security/integrity/platform_certs/load_uefi.c | 6 +- security/lockdown/Kconfig | 13 + security/lockdown/lockdown.c | 1 + security/security.c | 6 + 76 files changed, 1744 insertions(+), 191 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index f5a27f067db9..f4dc42f2f82a 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -6000,6 +6000,15 @@ unknown_nmi_panic [X86] Cause panic on unknown NMI. + unprivileged_bpf_disabled= + Format: { "0" | "1" | "2" } + Sets the initial value of + kernel.unprivileged_bpf_disabled sysctl knob. + 0 - unprivileged bpf() syscall access is enabled. + 1 - unprivileged bpf() syscall access is disabled permanently. + 2 - unprivileged bpf() syscall access is disabled. + Default value is 2. + usbcore.authorized_default= [USB] Default USB device authorization: (default -1 = authorized except for wireless USB, diff --git a/Kconfig b/Kconfig index 745bc773f567..f57ff40109d7 100644 --- a/Kconfig +++ b/Kconfig @@ -30,3 +30,5 @@ source "lib/Kconfig" source "lib/Kconfig.debug" source "Documentation/Kconfig" + +source "Kconfig.redhat" diff --git a/Kconfig.redhat b/Kconfig.redhat new file mode 100644 index 000000000000..effb81d04bfd --- /dev/null +++ b/Kconfig.redhat @@ -0,0 +1,17 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Red Hat specific options +# + +menu "Red Hat options" + +config RHEL_DIFFERENCES + bool "Remove support for deprecated features" + help + Red Hat may choose to deprecate certain features in its kernels. + Enable this option to remove support for hardware that is no + longer supported. + + Unless you want a restricted kernel, say N here. + +endmenu diff --git a/Makefile b/Makefile index daeb5c88b50b..82dcc0666407 100644 --- a/Makefile +++ b/Makefile @@ -18,6 +18,10 @@ $(if $(filter __%, $(MAKECMDGOALS)), \ PHONY := __all __all: +# Set RHEL variables +# Use this spot to avoid future merge conflicts +include Makefile.rhelver + # We are using a recursive build, so we need to do a little thinking # to get the ordering right. # @@ -1235,7 +1239,13 @@ define filechk_version.h ((c) > 255 ? 255 : (c)))'; \ echo \#define LINUX_VERSION_MAJOR $(VERSION); \ echo \#define LINUX_VERSION_PATCHLEVEL $(PATCHLEVEL); \ - echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL) + echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL); \ + echo '#define RHEL_MAJOR $(RHEL_MAJOR)'; \ + echo '#define RHEL_MINOR $(RHEL_MINOR)'; \ + echo '#define RHEL_RELEASE_VERSION(a,b) (((a) << 8) + (b))'; \ + echo '#define RHEL_RELEASE_CODE \ + $(shell expr $(RHEL_MAJOR) \* 256 + $(RHEL_MINOR))'; \ + echo '#define RHEL_RELEASE "$(RHEL_RELEASE)"' endef $(version_h): PATCHLEVEL := $(if $(PATCHLEVEL), $(PATCHLEVEL), 0) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 4c97cb40eebb..caf06cef3d2e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1479,9 +1479,9 @@ config HIGHMEM If unsure, say n. config HIGHPTE - bool "Allocate 2nd-level pagetables from highmem" if EXPERT + bool "Allocate 2nd-level pagetables from highmem" depends on HIGHMEM - default y + default n help The VM uses one page of physical memory for each page table. For systems with a lot of processes, this can use a lot of diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 09b885cc4db5..73fd512bd66f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1109,7 +1109,7 @@ endchoice config ARM64_FORCE_52BIT bool "Force 52-bit virtual addresses for userspace" - depends on ARM64_VA_BITS_52 && EXPERT + depends on ARM64_VA_BITS_52 help For systems with 52-bit userspace VAs enabled, the kernel will attempt to maintain compatibility with older software by providing 48-bit VAs @@ -1351,6 +1351,7 @@ config XEN config FORCE_MAX_ZONEORDER int default "14" if ARM64_64K_PAGES + default "13" if (ARCH_THUNDER && !ARM64_64K_PAGES) default "12" if ARM64_16K_PAGES default "11" help diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c index e4dea8db6924..3f17c7b5bd78 100644 --- a/arch/arm64/kernel/acpi.c +++ b/arch/arm64/kernel/acpi.c @@ -41,7 +41,11 @@ int acpi_pci_disabled = 1; /* skip ACPI PCI scan and IRQ initialization */ EXPORT_SYMBOL(acpi_pci_disabled); static bool param_acpi_off __initdata; +#ifdef CONFIG_RHEL_DIFFERENCES +static bool param_acpi_on __initdata = true; +#else static bool param_acpi_on __initdata; +#endif static bool param_acpi_force __initdata; static int __init parse_acpi(char *arg) diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h index 3f8ee257f9aa..3ab92feb6241 100644 --- a/arch/s390/include/asm/ipl.h +++ b/arch/s390/include/asm/ipl.h @@ -128,6 +128,7 @@ int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf, unsigned char flags, unsigned short cert); int ipl_report_add_certificate(struct ipl_report *report, void *key, unsigned long addr, unsigned long len); +bool ipl_get_secureboot(void); /* * DIAG 308 support diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index 5ad1dde23dc5..b6192d58eed3 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -2216,3 +2216,8 @@ int ipl_report_free(struct ipl_report *report) } #endif + +bool ipl_get_secureboot(void) +{ + return !!ipl_secure_flag; +} diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index f2c25d113e7b..059fe82e020a 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -49,6 +49,7 @@ #include #include #include +#include #include #include @@ -963,6 +964,9 @@ void __init setup_arch(char **cmdline_p) log_component_list(); + if (ipl_get_secureboot()) + security_lock_kernel_down("Secure IPL mode", LOCKDOWN_INTEGRITY_MAX); + /* Have one command line that is parsed and saved in /proc/cmdline */ /* boot_command_line has been already set up in early.c */ *cmdline_p = boot_command_line; diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 7b8382c11788..4aa07bcf45cf 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1316,6 +1316,7 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c) cpu_detect(c); get_cpu_vendor(c); get_cpu_cap(c); + get_model_name(c); /* RHEL: get model name for unsupported check */ get_cpu_address_sizes(c); setup_force_cpu_cap(X86_FEATURE_CPUID); cpu_parse_early_param(); diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index f7a132eb794d..2305f8353e49 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -51,6 +52,7 @@ #include #include #include +#include /* * max_low_pfn_mapped: highest directly mapped pfn < 4 GB @@ -721,6 +723,51 @@ static void __init early_reserve_memory(void) trim_snb_memory(); } +#ifdef CONFIG_RHEL_DIFFERENCES + +static void rh_check_supported(void) +{ + bool guest; + + guest = (x86_hyper_type != X86_HYPER_NATIVE || boot_cpu_has(X86_FEATURE_HYPERVISOR)); + + /* RHEL supports single cpu on guests only */ + if (((boot_cpu_data.x86_max_cores * smp_num_siblings) == 1) && + !guest && is_kdump_kernel()) { + pr_crit("Detected single cpu native boot.\n"); + pr_crit("Important: In this kernel, single threaded, single CPU 64-bit physical systems are unsupported."); + } + + /* + * If the RHEL kernel does not support this hardware, the kernel will + * attempt to boot, but no support is provided for this hardware + */ + switch (boot_cpu_data.x86_vendor) { + case X86_VENDOR_AMD: + case X86_VENDOR_INTEL: + break; + default: + pr_crit("Detected processor %s %s\n", + boot_cpu_data.x86_vendor_id, + boot_cpu_data.x86_model_id); + mark_hardware_unmaintained("x86 processor", "%s %s", boot_cpu_data.x86_vendor_id, + boot_cpu_data.x86_model_id); + break; + } + + /* + * Due to the complexity of x86 lapic & ioapic enumeration, and PCI IRQ + * routing, ACPI is required for x86. acpi=off is a valid debug kernel + * parameter, so just print out a loud warning in case something + * goes wrong (which is most of the time). + */ + if (acpi_disabled && !guest) + pr_crit("ACPI has been disabled or is not available on this hardware. This may result in a single cpu boot, incorrect PCI IRQ routing, or boot failure.\n"); +} +#else +#define rh_check_supported() +#endif + /* * Dump out kernel offset information on panic. */ @@ -930,6 +977,13 @@ void __init setup_arch(char **cmdline_p) if (efi_enabled(EFI_BOOT)) efi_init(); + efi_set_secure_boot(boot_params.secure_boot); + +#ifdef CONFIG_LOCK_DOWN_IN_EFI_SECURE_BOOT + if (efi_enabled(EFI_SECURE_BOOT)) + security_lock_kernel_down("EFI Secure Boot mode", LOCKDOWN_INTEGRITY_MAX); +#endif + dmi_setup(); /* @@ -1099,19 +1153,7 @@ void __init setup_arch(char **cmdline_p) /* Allocate bigger log buffer */ setup_log_buf(1); - if (efi_enabled(EFI_BOOT)) { - switch (boot_params.secure_boot) { - case efi_secureboot_mode_disabled: - pr_info("Secure boot disabled\n"); - break; - case efi_secureboot_mode_enabled: - pr_info("Secure boot enabled\n"); - break; - default: - pr_info("Secure boot could not be determined\n"); - break; - } - } + efi_set_secure_boot(boot_params.secure_boot); reserve_initrd(); @@ -1224,6 +1266,8 @@ void __init setup_arch(char **cmdline_p) efi_apply_memmap_quirks(); #endif + rh_check_supported(); + unwind_init(); } diff --git a/crypto/rng.c b/crypto/rng.c index fea082b25fe4..50a9d040bed1 100644 --- a/crypto/rng.c +++ b/crypto/rng.c @@ -11,14 +11,17 @@ #include #include #include +#include +#include #include #include #include #include +#include +#include #include #include #include -#include #include #include "internal.h" @@ -224,5 +227,73 @@ void crypto_unregister_rngs(struct rng_alg *algs, int count) } EXPORT_SYMBOL_GPL(crypto_unregister_rngs); +static ssize_t crypto_devrandom_read(void __user *buf, size_t buflen) +{ + u8 tmp[256]; + ssize_t ret; + + if (!buflen) + return 0; + + ret = crypto_get_default_rng(); + if (ret) + return ret; + + for (;;) { + int err; + int i; + + i = min_t(int, buflen, sizeof(tmp)); + err = crypto_rng_get_bytes(crypto_default_rng, tmp, i); + if (err) { + ret = err; + break; + } + + if (copy_to_user(buf, tmp, i)) { + ret = -EFAULT; + break; + } + + buflen -= i; + buf += i; + ret += i; + + if (!buflen) + break; + + if (need_resched()) { + if (signal_pending(current)) + break; + schedule(); + } + } + + crypto_put_default_rng(); + memzero_explicit(tmp, sizeof(tmp)); + + return ret; +} + +static const struct random_extrng crypto_devrandom_rng = { + .extrng_read = crypto_devrandom_read, + .owner = THIS_MODULE, +}; + +static int __init crypto_rng_init(void) +{ + if (fips_enabled) + random_register_extrng(&crypto_devrandom_rng); + return 0; +} + +static void __exit crypto_rng_exit(void) +{ + random_unregister_extrng(); +} + +late_initcall(crypto_rng_init); +module_exit(crypto_rng_exit); + MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Random Number Generator"); diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index 0edc1ed47673..782e2f399af2 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -96,6 +96,14 @@ static int apei_hest_parse(apei_hest_func_t func, void *data) if (hest_disable || !hest_tab) return -EINVAL; +#ifdef CONFIG_ARM64 + /* Ignore broken firmware */ + if (!strncmp(hest_tab->header.oem_id, "HPE ", 6) && + !strncmp(hest_tab->header.oem_table_id, "ProLiant", 8) && + MIDR_IMPLEMENTOR(read_cpuid_id()) == ARM_CPU_IMP_APM) + return -EINVAL; +#endif + hest_hdr = (struct acpi_hest_header *)(hest_tab + 1); for (i = 0; i < hest_tab->error_source_count; i++) { len = hest_esrc_len(hest_hdr); diff --git a/drivers/acpi/irq.c b/drivers/acpi/irq.c index c68e694fca26..146cba5ae5bc 100644 --- a/drivers/acpi/irq.c +++ b/drivers/acpi/irq.c @@ -130,6 +130,7 @@ struct acpi_irq_parse_one_ctx { unsigned int index; unsigned long *res_flags; struct irq_fwspec *fwspec; + bool skip_producer_check; }; /** @@ -201,7 +202,8 @@ static acpi_status acpi_irq_parse_one_cb(struct acpi_resource *ares, return AE_CTRL_TERMINATE; case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: eirq = &ares->data.extended_irq; - if (eirq->producer_consumer == ACPI_PRODUCER) + if (!ctx->skip_producer_check && + eirq->producer_consumer == ACPI_PRODUCER) return AE_OK; if (ctx->index >= eirq->interrupt_count) { ctx->index -= eirq->interrupt_count; @@ -236,8 +238,19 @@ static acpi_status acpi_irq_parse_one_cb(struct acpi_resource *ares, static int acpi_irq_parse_one(acpi_handle handle, unsigned int index, struct irq_fwspec *fwspec, unsigned long *flags) { - struct acpi_irq_parse_one_ctx ctx = { -EINVAL, index, flags, fwspec }; + struct acpi_irq_parse_one_ctx ctx = { -EINVAL, index, flags, fwspec, false }; + /* + * Firmware on arm64-based HPE m400 platform incorrectly marks + * its UART interrupt as ACPI_PRODUCER rather than ACPI_CONSUMER. + * Don't do the producer/consumer check for that device. + */ + if (IS_ENABLED(CONFIG_ARM64)) { + struct acpi_device *adev = acpi_bus_get_acpi_device(handle); + + if (adev && !strcmp(acpi_device_hid(adev), "APMC0D08")) + ctx.skip_producer_check = true; + } acpi_walk_resources(handle, METHOD_NAME__CRS, acpi_irq_parse_one_cb, &ctx); return ctx.rc; } diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 1331756d4cfc..4b5257f5e2c4 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1769,6 +1769,15 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device) if (!acpi_match_device_ids(device, ignore_serial_bus_ids)) return false; + /* + * Firmware on some arm64 X-Gene platforms will make the UART + * device appear as both a UART and a slave of that UART. Just + * bail out here for X-Gene UARTs. + */ + if (IS_ENABLED(CONFIG_ARM64) && + !strcmp(acpi_device_hid(device), "APMC0D08")) + return false; + INIT_LIST_HEAD(&resource_list); acpi_dev_get_resources(device, &resource_list, acpi_check_serial_bus_slave, diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 0ed484e04fd6..a2e486bd14ef 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -690,6 +690,24 @@ int ahci_stop_engine(struct ata_port *ap) tmp &= ~PORT_CMD_START; writel(tmp, port_mmio + PORT_CMD); +#ifdef CONFIG_ARM64 + /* Rev Ax of Cavium CN99XX needs a hack for port stop */ + if (dev_is_pci(ap->host->dev) && + to_pci_dev(ap->host->dev)->vendor == 0x14e4 && + to_pci_dev(ap->host->dev)->device == 0x9027 && + midr_is_cpu_model_range(read_cpuid_id(), + MIDR_CPU_MODEL(ARM_CPU_IMP_BRCM, BRCM_CPU_PART_VULCAN), + MIDR_CPU_VAR_REV(0, 0), + MIDR_CPU_VAR_REV(0, MIDR_REVISION_MASK))) { + tmp = readl(hpriv->mmio + 0x8000); + udelay(100); + writel(tmp | (1 << 26), hpriv->mmio + 0x8000); + udelay(100); + writel(tmp & ~(1 << 26), hpriv->mmio + 0x8000); + dev_warn(ap->host->dev, "CN99XX SATA reset workaround applied\n"); + } +#endif + /* wait for engine to stop. This could be as long as 500 msec */ tmp = ata_wait_register(ap, port_mmio + PORT_CMD, PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500); diff --git a/drivers/char/ipmi/ipmi_dmi.c b/drivers/char/ipmi/ipmi_dmi.c index bbf7029e224b..cf7faa970dd6 100644 --- a/drivers/char/ipmi/ipmi_dmi.c +++ b/drivers/char/ipmi/ipmi_dmi.c @@ -215,6 +215,21 @@ static int __init scan_for_dmi_ipmi(void) { const struct dmi_device *dev = NULL; +#ifdef CONFIG_ARM64 + /* RHEL-only + * If this is ARM-based HPE m400, return now, because that platform + * reports the host-side ipmi address as intel port-io space, which + * does not exist in the ARM architecture. + */ + const char *dmistr = dmi_get_system_info(DMI_PRODUCT_NAME); + + if (dmistr && (strcmp("ProLiant m400 Server", dmistr) == 0)) { + pr_debug("%s does not support host ipmi\n", dmistr); + return 0; + } + /* END RHEL-only */ +#endif + while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) dmi_decode_ipmi((const struct dmi_header *) dev->device_data); diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index c59265146e9c..caa8458edde2 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #define IPMI_DRIVER_VERSION "39.2" @@ -5422,8 +5423,21 @@ static int __init ipmi_init_msghandler_mod(void) { int rv; - pr_info("version " IPMI_DRIVER_VERSION "\n"); +#ifdef CONFIG_ARM64 + /* RHEL-only + * If this is ARM-based HPE m400, return now, because that platform + * reports the host-side ipmi address as intel port-io space, which + * does not exist in the ARM architecture. + */ + const char *dmistr = dmi_get_system_info(DMI_PRODUCT_NAME); + if (dmistr && (strcmp("ProLiant m400 Server", dmistr) == 0)) { + pr_debug("%s does not support host ipmi\n", dmistr); + return -ENOSYS; + } + /* END RHEL-only */ +#endif + pr_info("version " IPMI_DRIVER_VERSION "\n"); mutex_lock(&ipmi_interfaces_mutex); rv = ipmi_register_driver(); mutex_unlock(&ipmi_interfaces_mutex); diff --git a/drivers/char/random.c b/drivers/char/random.c index 3404a91edf29..184dbb94710c 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -344,6 +344,7 @@ #include #include #include +#include #include #include @@ -358,6 +359,11 @@ /* #define ADD_INTERRUPT_BENCH */ +/* + * Hook for external RNG. + */ +static const struct random_extrng __rcu *extrng; + /* * If the entropy count falls under this number of bits, then we * should wake up processes which are selecting or polling on write @@ -486,6 +492,9 @@ static int ratelimit_disable __read_mostly; module_param_named(ratelimit_disable, ratelimit_disable, int, 0644); MODULE_PARM_DESC(ratelimit_disable, "Disable random ratelimit suppression"); +static const struct file_operations extrng_random_fops; +static const struct file_operations extrng_urandom_fops; + /********************************************************************** * * OS independent entropy store. Here are the functions which handle @@ -1775,6 +1784,13 @@ static __poll_t random_poll(struct file *file, poll_table *wait) return mask; } +static __poll_t +extrng_poll(struct file *file, poll_table * wait) +{ + /* extrng pool is always full, always read, no writes */ + return EPOLLIN | EPOLLRDNORM; +} + static int write_pool(const char __user *buffer, size_t count) { size_t bytes; @@ -1879,7 +1895,58 @@ static int random_fasync(int fd, struct file *filp, int on) return fasync_helper(fd, filp, on, &fasync); } +static int random_open(struct inode *inode, struct file *filp) +{ + const struct random_extrng *rng; + + rcu_read_lock(); + rng = rcu_dereference(extrng); + if (rng && !try_module_get(rng->owner)) + rng = NULL; + rcu_read_unlock(); + + if (!rng) + return 0; + + filp->f_op = &extrng_random_fops; + filp->private_data = rng->owner; + + return 0; +} + +static int urandom_open(struct inode *inode, struct file *filp) +{ + const struct random_extrng *rng; + + rcu_read_lock(); + rng = rcu_dereference(extrng); + if (rng && !try_module_get(rng->owner)) + rng = NULL; + rcu_read_unlock(); + + if (!rng) + return 0; + + filp->f_op = &extrng_urandom_fops; + filp->private_data = rng->owner; + + return 0; +} + +static int extrng_release(struct inode *inode, struct file *filp) +{ + module_put(filp->private_data); + return 0; +} + +static ssize_t +extrng_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) +{ + return rcu_dereference_raw(extrng)->extrng_read(buf, nbytes); +} + const struct file_operations random_fops = { + .open = random_open, .read = random_read, .write = random_write, .poll = random_poll, @@ -1890,6 +1957,7 @@ const struct file_operations random_fops = { }; const struct file_operations urandom_fops = { + .open = urandom_open, .read = urandom_read, .write = random_write, .unlocked_ioctl = random_ioctl, @@ -1898,9 +1966,31 @@ const struct file_operations urandom_fops = { .llseek = noop_llseek, }; +static const struct file_operations extrng_random_fops = { + .open = random_open, + .read = extrng_read, + .write = random_write, + .poll = extrng_poll, + .unlocked_ioctl = random_ioctl, + .fasync = random_fasync, + .llseek = noop_llseek, + .release = extrng_release, +}; + +static const struct file_operations extrng_urandom_fops = { + .open = urandom_open, + .read = extrng_read, + .write = random_write, + .unlocked_ioctl = random_ioctl, + .fasync = random_fasync, + .llseek = noop_llseek, + .release = extrng_release, +}; + SYSCALL_DEFINE3(getrandom, char __user *, buf, size_t, count, unsigned int, flags) { + const struct random_extrng *rng; int ret; if (flags & ~(GRND_NONBLOCK | GRND_RANDOM | GRND_INSECURE)) @@ -1916,6 +2006,18 @@ SYSCALL_DEFINE3(getrandom, char __user *, buf, size_t, count, unsigned int, if (count > INT_MAX) count = INT_MAX; + rcu_read_lock(); + rng = rcu_dereference(extrng); + if (rng && !try_module_get(rng->owner)) + rng = NULL; + rcu_read_unlock(); + + if (rng) { + ret = rng->extrng_read(buf, count); + module_put(rng->owner); + return ret; + } + if (!(flags & GRND_INSECURE) && !crng_ready()) { if (flags & GRND_NONBLOCK) return -EAGAIN; @@ -2235,3 +2337,16 @@ void add_bootloader_randomness(const void *buf, unsigned int size) add_device_randomness(buf, size); } EXPORT_SYMBOL_GPL(add_bootloader_randomness); + +void random_register_extrng(const struct random_extrng *rng) +{ + rcu_assign_pointer(extrng, rng); +} +EXPORT_SYMBOL_GPL(random_register_extrng); + +void random_unregister_extrng(void) +{ + RCU_INIT_POINTER(extrng, NULL); + synchronize_rcu(); +} +EXPORT_SYMBOL_GPL(random_unregister_extrng); diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile index c02ff25dd477..d860f8eb9a81 100644 --- a/drivers/firmware/efi/Makefile +++ b/drivers/firmware/efi/Makefile @@ -28,6 +28,7 @@ obj-$(CONFIG_EFI_FAKE_MEMMAP) += fake_map.o obj-$(CONFIG_EFI_BOOTLOADER_CONTROL) += efibc.o obj-$(CONFIG_EFI_TEST) += test/ obj-$(CONFIG_EFI_DEV_PATH_PARSER) += dev-path-parser.o +obj-$(CONFIG_EFI) += secureboot.o obj-$(CONFIG_APPLE_PROPERTIES) += apple-properties.o obj-$(CONFIG_EFI_RCI2_TABLE) += rci2-table.o obj-$(CONFIG_EFI_EMBEDDED_FIRMWARE) += embedded-firmware.o diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index 7de3f5b6e8d0..95b1c35b347c 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -31,6 +31,7 @@ #include #include #include +#include #include @@ -851,40 +852,101 @@ int efi_mem_type(unsigned long phys_addr) } #endif +struct efi_error_code { + efi_status_t status; + int errno; + const char *description; +}; + +static const struct efi_error_code efi_error_codes[] = { + { EFI_SUCCESS, 0, "Success"}, +#if 0 + { EFI_LOAD_ERROR, -EPICK_AN_ERRNO, "Load Error"}, +#endif + { EFI_INVALID_PARAMETER, -EINVAL, "Invalid Parameter"}, + { EFI_UNSUPPORTED, -ENOSYS, "Unsupported"}, + { EFI_BAD_BUFFER_SIZE, -ENOSPC, "Bad Buffer Size"}, + { EFI_BUFFER_TOO_SMALL, -ENOSPC, "Buffer Too Small"}, + { EFI_NOT_READY, -EAGAIN, "Not Ready"}, + { EFI_DEVICE_ERROR, -EIO, "Device Error"}, + { EFI_WRITE_PROTECTED, -EROFS, "Write Protected"}, + { EFI_OUT_OF_RESOURCES, -ENOMEM, "Out of Resources"}, +#if 0 + { EFI_VOLUME_CORRUPTED, -EPICK_AN_ERRNO, "Volume Corrupt"}, + { EFI_VOLUME_FULL, -EPICK_AN_ERRNO, "Volume Full"}, + { EFI_NO_MEDIA, -EPICK_AN_ERRNO, "No Media"}, + { EFI_MEDIA_CHANGED, -EPICK_AN_ERRNO, "Media changed"}, +#endif + { EFI_NOT_FOUND, -ENOENT, "Not Found"}, +#if 0 + { EFI_ACCESS_DENIED, -EPICK_AN_ERRNO, "Access Denied"}, + { EFI_NO_RESPONSE, -EPICK_AN_ERRNO, "No Response"}, + { EFI_NO_MAPPING, -EPICK_AN_ERRNO, "No mapping"}, + { EFI_TIMEOUT, -EPICK_AN_ERRNO, "Time out"}, + { EFI_NOT_STARTED, -EPICK_AN_ERRNO, "Not started"}, + { EFI_ALREADY_STARTED, -EPICK_AN_ERRNO, "Already started"}, +#endif + { EFI_ABORTED, -EINTR, "Aborted"}, +#if 0 + { EFI_ICMP_ERROR, -EPICK_AN_ERRNO, "ICMP Error"}, + { EFI_TFTP_ERROR, -EPICK_AN_ERRNO, "TFTP Error"}, + { EFI_PROTOCOL_ERROR, -EPICK_AN_ERRNO, "Protocol Error"}, + { EFI_INCOMPATIBLE_VERSION, -EPICK_AN_ERRNO, "Incompatible Version"}, +#endif + { EFI_SECURITY_VIOLATION, -EACCES, "Security Policy Violation"}, +#if 0 + { EFI_CRC_ERROR, -EPICK_AN_ERRNO, "CRC Error"}, + { EFI_END_OF_MEDIA, -EPICK_AN_ERRNO, "End of Media"}, + { EFI_END_OF_FILE, -EPICK_AN_ERRNO, "End of File"}, + { EFI_INVALID_LANGUAGE, -EPICK_AN_ERRNO, "Invalid Languages"}, + { EFI_COMPROMISED_DATA, -EPICK_AN_ERRNO, "Compromised Data"}, + + // warnings + { EFI_WARN_UNKOWN_GLYPH, -EPICK_AN_ERRNO, "Warning Unknown Glyph"}, + { EFI_WARN_DELETE_FAILURE, -EPICK_AN_ERRNO, "Warning Delete Failure"}, + { EFI_WARN_WRITE_FAILURE, -EPICK_AN_ERRNO, "Warning Write Failure"}, + { EFI_WARN_BUFFER_TOO_SMALL, -EPICK_AN_ERRNO, "Warning Buffer Too Small"}, +#endif +}; + +static int +efi_status_cmp_bsearch(const void *key, const void *item) +{ + u64 status = (u64)(uintptr_t)key; + struct efi_error_code *code = (struct efi_error_code *)item; + + if (status < code->status) + return -1; + if (status > code->status) + return 1; + return 0; +} + int efi_status_to_err(efi_status_t status) { - int err; - - switch (status) { - case EFI_SUCCESS: - err = 0; - break; - case EFI_INVALID_PARAMETER: - err = -EINVAL; - break; - case EFI_OUT_OF_RESOURCES: - err = -ENOSPC; - break; - case EFI_DEVICE_ERROR: - err = -EIO; - break; - case EFI_WRITE_PROTECTED: - err = -EROFS; - break; - case EFI_SECURITY_VIOLATION: - err = -EACCES; - break; - case EFI_NOT_FOUND: - err = -ENOENT; - break; - case EFI_ABORTED: - err = -EINTR; - break; - default: - err = -EINVAL; - } + struct efi_error_code *found; + size_t num = sizeof(efi_error_codes) / sizeof(struct efi_error_code); - return err; + found = bsearch((void *)(uintptr_t)status, efi_error_codes, + sizeof(struct efi_error_code), num, + efi_status_cmp_bsearch); + if (!found) + return -EINVAL; + return found->errno; +} + +const char * +efi_status_to_str(efi_status_t status) +{ + struct efi_error_code *found; + size_t num = sizeof(efi_error_codes) / sizeof(struct efi_error_code); + + found = bsearch((void *)(uintptr_t)status, efi_error_codes, + sizeof(struct efi_error_code), num, + efi_status_cmp_bsearch); + if (!found) + return "Unknown error code"; + return found->description; } static DEFINE_SPINLOCK(efi_mem_reserve_persistent_lock); diff --git a/drivers/firmware/efi/secureboot.c b/drivers/firmware/efi/secureboot.c new file mode 100644 index 000000000000..de0a3714a5d4 --- /dev/null +++ b/drivers/firmware/efi/secureboot.c @@ -0,0 +1,38 @@ +/* Core kernel secure boot support. + * + * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include + +/* + * Decide what to do when UEFI secure boot mode is enabled. + */ +void __init efi_set_secure_boot(enum efi_secureboot_mode mode) +{ + if (efi_enabled(EFI_BOOT)) { + switch (mode) { + case efi_secureboot_mode_disabled: + pr_info("Secure boot disabled\n"); + break; + case efi_secureboot_mode_enabled: + set_bit(EFI_SECURE_BOOT, &efi.flags); + pr_info("Secure boot enabled\n"); + break; + default: + pr_warn("Secure boot could not be determined (mode %u)\n", + mode); + break; + } + } +} diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c index 311eee599ce9..2460c6bd46f8 100644 --- a/drivers/hid/hid-rmi.c +++ b/drivers/hid/hid-rmi.c @@ -322,19 +322,12 @@ static int rmi_input_event(struct hid_device *hdev, u8 *data, int size) { struct rmi_data *hdata = hid_get_drvdata(hdev); struct rmi_device *rmi_dev = hdata->xport.rmi_dev; - unsigned long flags; if (!(test_bit(RMI_STARTED, &hdata->flags))) return 0; - local_irq_save(flags); - rmi_set_attn_data(rmi_dev, data[1], &data[2], size - 2); - generic_handle_irq(hdata->rmi_irq); - - local_irq_restore(flags); - return 1; } @@ -591,56 +584,6 @@ static const struct rmi_transport_ops hid_rmi_ops = { .reset = rmi_hid_reset, }; -static void rmi_irq_teardown(void *data) -{ - struct rmi_data *hdata = data; - struct irq_domain *domain = hdata->domain; - - if (!domain) - return; - - irq_dispose_mapping(irq_find_mapping(domain, 0)); - - irq_domain_remove(domain); - hdata->domain = NULL; - hdata->rmi_irq = 0; -} - -static int rmi_irq_map(struct irq_domain *h, unsigned int virq, - irq_hw_number_t hw_irq_num) -{ - irq_set_chip_and_handler(virq, &dummy_irq_chip, handle_simple_irq); - - return 0; -} - -static const struct irq_domain_ops rmi_irq_ops = { - .map = rmi_irq_map, -}; - -static int rmi_setup_irq_domain(struct hid_device *hdev) -{ - struct rmi_data *hdata = hid_get_drvdata(hdev); - int ret; - - hdata->domain = irq_domain_create_linear(hdev->dev.fwnode, 1, - &rmi_irq_ops, hdata); - if (!hdata->domain) - return -ENOMEM; - - ret = devm_add_action_or_reset(&hdev->dev, &rmi_irq_teardown, hdata); - if (ret) - return ret; - - hdata->rmi_irq = irq_create_mapping(hdata->domain, 0); - if (hdata->rmi_irq <= 0) { - hid_err(hdev, "Can't allocate an IRQ\n"); - return hdata->rmi_irq < 0 ? hdata->rmi_irq : -ENXIO; - } - - return 0; -} - static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id) { struct rmi_data *data = NULL; @@ -713,18 +656,11 @@ static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id) mutex_init(&data->page_mutex); - ret = rmi_setup_irq_domain(hdev); - if (ret) { - hid_err(hdev, "failed to allocate IRQ domain\n"); - return ret; - } - if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) rmi_hid_pdata.gpio_data.disable = true; data->xport.dev = hdev->dev.parent; data->xport.pdata = rmi_hid_pdata; - data->xport.pdata.irq = data->rmi_irq; data->xport.proto_name = "hid"; data->xport.ops = &hid_rmi_ops; diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index bf18128cf5de..e973c7816de8 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -2165,6 +2166,16 @@ static const struct amba_id etm4_ids[] = { {}, }; +static const struct dmi_system_id broken_coresight[] = { + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "HPE"), + DMI_MATCH(DMI_PRODUCT_NAME, "Apollo 70"), + }, + }, + { } /* terminating entry */ +}; + MODULE_DEVICE_TABLE(amba, etm4_ids); static struct amba_driver etm4x_amba_driver = { @@ -2198,6 +2209,11 @@ static int __init etm4x_init(void) { int ret; + if (dmi_check_system(broken_coresight)) { + pr_info("ETM4 disabled due to firmware bug\n"); + return 0; + } + ret = etm4_pm_setup(); /* etm4_pm_setup() does its own cleanup - exit on error */ @@ -2224,6 +2240,9 @@ static int __init etm4x_init(void) static void __exit etm4x_exit(void) { + if (dmi_check_system(broken_coresight)) + return; + amba_driver_unregister(&etm4x_amba_driver); platform_driver_unregister(&etm4_platform_driver); etm4_pm_clear(); diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c index 258d5fe3d395..f7298e3dc8f3 100644 --- a/drivers/input/rmi4/rmi_driver.c +++ b/drivers/input/rmi4/rmi_driver.c @@ -182,34 +182,47 @@ void rmi_set_attn_data(struct rmi_device *rmi_dev, unsigned long irq_status, attn_data.data = fifo_data; kfifo_put(&drvdata->attn_fifo, attn_data); + + schedule_work(&drvdata->attn_work); } EXPORT_SYMBOL_GPL(rmi_set_attn_data); -static irqreturn_t rmi_irq_fn(int irq, void *dev_id) +static void attn_callback(struct work_struct *work) { - struct rmi_device *rmi_dev = dev_id; - struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev); + struct rmi_driver_data *drvdata = container_of(work, + struct rmi_driver_data, + attn_work); struct rmi4_attn_data attn_data = {0}; int ret, count; count = kfifo_get(&drvdata->attn_fifo, &attn_data); - if (count) { - *(drvdata->irq_status) = attn_data.irq_status; - drvdata->attn_data = attn_data; - } + if (!count) + return; - ret = rmi_process_interrupt_requests(rmi_dev); + *(drvdata->irq_status) = attn_data.irq_status; + drvdata->attn_data = attn_data; + + ret = rmi_process_interrupt_requests(drvdata->rmi_dev); if (ret) - rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev, + rmi_dbg(RMI_DEBUG_CORE, &drvdata->rmi_dev->dev, "Failed to process interrupt request: %d\n", ret); - if (count) { - kfree(attn_data.data); - drvdata->attn_data.data = NULL; - } + kfree(attn_data.data); + drvdata->attn_data.data = NULL; if (!kfifo_is_empty(&drvdata->attn_fifo)) - return rmi_irq_fn(irq, dev_id); + schedule_work(&drvdata->attn_work); +} + +static irqreturn_t rmi_irq_fn(int irq, void *dev_id) +{ + struct rmi_device *rmi_dev = dev_id; + int ret; + + ret = rmi_process_interrupt_requests(rmi_dev); + if (ret) + rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev, + "Failed to process interrupt request: %d\n", ret); return IRQ_HANDLED; } @@ -217,7 +230,6 @@ static irqreturn_t rmi_irq_fn(int irq, void *dev_id) static int rmi_irq_init(struct rmi_device *rmi_dev) { struct rmi_device_platform_data *pdata = rmi_get_platform_data(rmi_dev); - struct rmi_driver_data *data = dev_get_drvdata(&rmi_dev->dev); int irq_flags = irq_get_trigger_type(pdata->irq); int ret; @@ -235,8 +247,6 @@ static int rmi_irq_init(struct rmi_device *rmi_dev) return ret; } - data->enabled = true; - return 0; } @@ -886,23 +896,27 @@ void rmi_enable_irq(struct rmi_device *rmi_dev, bool clear_wake) if (data->enabled) goto out; - enable_irq(irq); - data->enabled = true; - if (clear_wake && device_may_wakeup(rmi_dev->xport->dev)) { - retval = disable_irq_wake(irq); - if (retval) - dev_warn(&rmi_dev->dev, - "Failed to disable irq for wake: %d\n", - retval); - } + if (irq) { + enable_irq(irq); + data->enabled = true; + if (clear_wake && device_may_wakeup(rmi_dev->xport->dev)) { + retval = disable_irq_wake(irq); + if (retval) + dev_warn(&rmi_dev->dev, + "Failed to disable irq for wake: %d\n", + retval); + } - /* - * Call rmi_process_interrupt_requests() after enabling irq, - * otherwise we may lose interrupt on edge-triggered systems. - */ - irq_flags = irq_get_trigger_type(pdata->irq); - if (irq_flags & IRQ_TYPE_EDGE_BOTH) - rmi_process_interrupt_requests(rmi_dev); + /* + * Call rmi_process_interrupt_requests() after enabling irq, + * otherwise we may lose interrupt on edge-triggered systems. + */ + irq_flags = irq_get_trigger_type(pdata->irq); + if (irq_flags & IRQ_TYPE_EDGE_BOTH) + rmi_process_interrupt_requests(rmi_dev); + } else { + data->enabled = true; + } out: mutex_unlock(&data->enabled_mutex); @@ -922,20 +936,22 @@ void rmi_disable_irq(struct rmi_device *rmi_dev, bool enable_wake) goto out; data->enabled = false; - disable_irq(irq); - if (enable_wake && device_may_wakeup(rmi_dev->xport->dev)) { - retval = enable_irq_wake(irq); - if (retval) - dev_warn(&rmi_dev->dev, - "Failed to enable irq for wake: %d\n", - retval); - } - - /* make sure the fifo is clean */ - while (!kfifo_is_empty(&data->attn_fifo)) { - count = kfifo_get(&data->attn_fifo, &attn_data); - if (count) - kfree(attn_data.data); + if (irq) { + disable_irq(irq); + if (enable_wake && device_may_wakeup(rmi_dev->xport->dev)) { + retval = enable_irq_wake(irq); + if (retval) + dev_warn(&rmi_dev->dev, + "Failed to enable irq for wake: %d\n", + retval); + } + } else { + /* make sure the fifo is clean */ + while (!kfifo_is_empty(&data->attn_fifo)) { + count = kfifo_get(&data->attn_fifo, &attn_data); + if (count) + kfree(attn_data.data); + } } out: @@ -981,6 +997,8 @@ static int rmi_driver_remove(struct device *dev) irq_domain_remove(data->irqdomain); data->irqdomain = NULL; + cancel_work_sync(&data->attn_work); + rmi_f34_remove_sysfs(rmi_dev); rmi_free_function_list(rmi_dev); @@ -1219,9 +1237,15 @@ static int rmi_driver_probe(struct device *dev) } } - retval = rmi_irq_init(rmi_dev); - if (retval < 0) - goto err_destroy_functions; + if (pdata->irq) { + retval = rmi_irq_init(rmi_dev); + if (retval < 0) + goto err_destroy_functions; + } + + data->enabled = true; + + INIT_WORK(&data->attn_work, attn_callback); if (data->f01_container->dev.driver) { /* Driver already bound, so enable ATTN now. */ diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 107dcf5938d6..225a9797e39d 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -7,6 +7,7 @@ #define pr_fmt(fmt) "iommu: " fmt #include +#include #include #include #include @@ -3124,6 +3125,27 @@ u32 iommu_sva_get_pasid(struct iommu_sva *handle) } EXPORT_SYMBOL_GPL(iommu_sva_get_pasid); +#ifdef CONFIG_ARM64 +static int __init iommu_quirks(void) +{ + const char *vendor, *name; + + vendor = dmi_get_system_info(DMI_SYS_VENDOR); + name = dmi_get_system_info(DMI_PRODUCT_NAME); + + if (vendor && + (strncmp(vendor, "GIGABYTE", 8) == 0 && name && + (strncmp(name, "R120", 4) == 0 || + strncmp(name, "R270", 4) == 0))) { + pr_warn("Gigabyte %s detected, force iommu passthrough mode", name); + iommu_def_domain_type = IOMMU_DOMAIN_IDENTITY; + } + + return 0; +} +arch_initcall(iommu_quirks); +#endif + /* * Changes the default domain of an iommu group that has *only* one device * diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c index 4acd8f9a48e1..57b430c4d814 100644 --- a/drivers/message/fusion/mptsas.c +++ b/drivers/message/fusion/mptsas.c @@ -5320,6 +5320,11 @@ mptsas_probe(struct pci_dev *pdev, const struct pci_device_id *id) ioc, MPI_SAS_OP_CLEAR_ALL_PERSISTENT); } +#ifdef CONFIG_RHEL_DIFFERENCES + add_taint(TAINT_SUPPORT_REMOVED, LOCKDEP_STILL_OK); + pr_warn("MPTSAS MODULE IS NOT SUPPORTED\n"); +#endif + error = scsi_add_host(sh, &ioc->pcidev->dev); if (error) { dprintk(ioc, printk(MYIOC_s_ERR_FMT @@ -5383,6 +5388,10 @@ static void mptsas_remove(struct pci_dev *pdev) } static struct pci_device_id mptsas_pci_table[] = { +#ifdef CONFIG_RHEL_DIFFERENCES + { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_SAS1068, + PCI_VENDOR_ID_VMWARE, PCI_ANY_ID }, +#else { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_SAS1064, PCI_ANY_ID, PCI_ANY_ID }, { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_SAS1068, @@ -5395,6 +5404,7 @@ static struct pci_device_id mptsas_pci_table[] = { PCI_ANY_ID, PCI_ANY_ID }, { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_SAS1068_820XELP, PCI_ANY_ID, PCI_ANY_ID }, +#endif {0} /* Terminating entry */ }; MODULE_DEVICE_TABLE(pci, mptsas_pci_table); diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c index acd4805dcf83..5f814d447ab3 100644 --- a/drivers/message/fusion/mptspi.c +++ b/drivers/message/fusion/mptspi.c @@ -1238,12 +1238,17 @@ static struct spi_function_template mptspi_transport_functions = { */ static struct pci_device_id mptspi_pci_table[] = { +#ifdef CONFIG_RHEL_DIFFERENCES + { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_53C1030, + PCI_VENDOR_ID_VMWARE, PCI_ANY_ID }, +#else { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_53C1030, PCI_ANY_ID, PCI_ANY_ID }, { PCI_VENDOR_ID_ATTO, MPI_MANUFACTPAGE_DEVID_53C1030, PCI_ANY_ID, PCI_ANY_ID }, { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVID_53C1035, PCI_ANY_ID, PCI_ANY_ID }, +#endif {0} /* Terminating entry */ }; MODULE_DEVICE_TABLE(pci, mptspi_pci_table); @@ -1534,6 +1539,12 @@ mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id) 0, 0, 0, 0, 5); scsi_scan_host(sh); + +#ifdef CONFIG_RHEL_DIFFERENCES + add_taint(TAINT_SUPPORT_REMOVED, LOCKDEP_STILL_OK); + pr_warn("MPTSPI MODULE IS NOT SUPPORTED\n"); +#endif + return 0; out_mptspi_probe: diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c index 3f5feb55cfba..9d8cb34845b3 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_main.c +++ b/drivers/net/ethernet/intel/e1000/e1000_main.c @@ -933,6 +933,8 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) int bars, need_ioport; bool disable_dev = false; + pci_hw_unmaintained(e1000_pci_tbl, pdev); + /* do not allocate ioport bars when not needed */ need_ioport = e1000_is_need_ioport(pdev); if (need_ioport) { diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 8b2adc56b92a..3263b33c9b69 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -3045,6 +3045,8 @@ static int __init team_module_init(void) if (err) goto err_nl_init; + mark_driver_deprecated(DRV_NAME); + return 0; err_nl_init: diff --git a/drivers/net/wireguard/main.c b/drivers/net/wireguard/main.c index ee4da9ab8013..0f217997a764 100644 --- a/drivers/net/wireguard/main.c +++ b/drivers/net/wireguard/main.c @@ -12,6 +12,7 @@ #include +#include #include #include #include @@ -21,6 +22,11 @@ static int __init wg_mod_init(void) { int ret; +#ifdef CONFIG_RHEL_DIFFERENCES + if (fips_enabled) + return -EOPNOTSUPP; +#endif + ret = wg_allowedips_slab_init(); if (ret < 0) goto err_allowedips; @@ -48,6 +54,7 @@ static int __init wg_mod_init(void) pr_info("WireGuard " WIREGUARD_VERSION " loaded. See www.wireguard.com for information.\n"); pr_info("Copyright (C) 2015-2019 Jason A. Donenfeld . All Rights Reserved.\n"); + mark_tech_preview("WireGuard", THIS_MODULE); return 0; err_netlink: diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index fd4720d37cc0..c31bc05ec139 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -244,6 +244,9 @@ static void nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl) static blk_status_t nvme_error_status(u16 status) { + if (unlikely(status & NVME_SC_DNR)) + return BLK_STS_TARGET; + switch (status & 0x7ff) { case NVME_SC_SUCCESS: return BLK_STS_OK; @@ -303,6 +306,7 @@ enum nvme_disposition { COMPLETE, RETRY, FAILOVER, + FAILUP, }; static inline enum nvme_disposition nvme_decide_disposition(struct request *req) @@ -310,15 +314,16 @@ static inline enum nvme_disposition nvme_decide_disposition(struct request *req) if (likely(nvme_req(req)->status == 0)) return COMPLETE; - if (blk_noretry_request(req) || + if ((req->cmd_flags & (REQ_FAILFAST_DEV | REQ_FAILFAST_DRIVER)) || (nvme_req(req)->status & NVME_SC_DNR) || nvme_req(req)->retries >= nvme_max_retries) return COMPLETE; - if (req->cmd_flags & REQ_NVME_MPATH) { + if (req->cmd_flags & (REQ_NVME_MPATH | REQ_FAILFAST_TRANSPORT)) { if (nvme_is_path_error(nvme_req(req)->status) || blk_queue_dying(req->q)) - return FAILOVER; + return (req->cmd_flags & REQ_NVME_MPATH) ? + FAILOVER : FAILUP; } else { if (blk_queue_dying(req->q)) return COMPLETE; @@ -344,6 +349,14 @@ static inline void nvme_end_req(struct request *req) blk_mq_end_request(req, status); } +static inline void nvme_failup_req(struct request *req) +{ + nvme_update_ana(req); + + nvme_req(req)->status = NVME_SC_HOST_PATH_ERROR; + nvme_end_req(req); +} + void nvme_complete_rq(struct request *req) { trace_nvme_complete_rq(req); @@ -362,6 +375,9 @@ void nvme_complete_rq(struct request *req) case FAILOVER: nvme_failover_req(req); return; + case FAILUP: + nvme_failup_req(req); + return; } } EXPORT_SYMBOL_GPL(nvme_complete_rq); diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index ff775235534c..94de4ecefe56 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -101,14 +101,10 @@ bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name, int *flags) return true; } -void nvme_failover_req(struct request *req) +void nvme_update_ana(struct request *req) { struct nvme_ns *ns = req->q->queuedata; u16 status = nvme_req(req)->status & 0x7ff; - unsigned long flags; - struct bio *bio; - - nvme_mpath_clear_current_path(ns); /* * If we got back an ANA error, we know the controller is alive but not @@ -119,6 +115,16 @@ void nvme_failover_req(struct request *req) set_bit(NVME_NS_ANA_PENDING, &ns->flags); queue_work(nvme_wq, &ns->ctrl->ana_work); } +} + +void nvme_failover_req(struct request *req) +{ + struct nvme_ns *ns = req->q->queuedata; + unsigned long flags; + struct bio *bio; + + nvme_mpath_clear_current_path(ns); + nvme_update_ana(req); spin_lock_irqsave(&ns->head->requeue_lock, flags); for (bio = req->bio; bio; bio = bio->bi_next) { @@ -869,8 +875,7 @@ int nvme_mpath_init_identify(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id) int error = 0; /* check if multipath is enabled and we have the capability */ - if (!multipath || !ctrl->subsys || - !(ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA)) + if (!ctrl->subsys || !(ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA)) return 0; if (!ctrl->max_namespaces || diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index a162f6c6da6e..0606205d5dcc 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -770,6 +770,7 @@ void nvme_mpath_start_freeze(struct nvme_subsystem *subsys); void nvme_mpath_default_iopolicy(struct nvme_subsystem *subsys); bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name, int *flags); void nvme_failover_req(struct request *req); +void nvme_update_ana(struct request *req); void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl); int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl,struct nvme_ns_head *head); void nvme_mpath_add_disk(struct nvme_ns *ns, struct nvme_id_ns *id); @@ -808,6 +809,9 @@ static inline bool nvme_mpath_set_disk_name(struct nvme_ns *ns, char *disk_name, static inline void nvme_failover_req(struct request *req) { } +static inline void nvme_update_ana(struct request *req) +{ +} static inline void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl) { } diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 588588cfda48..adb3a91b0ba3 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include "pci.h" #include "pcie/portdrv.h" @@ -295,6 +296,83 @@ static struct attribute *pci_drv_attrs[] = { }; ATTRIBUTE_GROUPS(pci_drv); +#ifdef CONFIG_RHEL_DIFFERENCES +/** + * pci_hw_deprecated - Tell if a PCI device is deprecated + * @ids: array of PCI device id structures to search in + * @dev: the PCI device structure to match against + * + * Used by a driver to check whether this device is in its list of deprecated + * devices. Returns the matching pci_device_id structure or %NULL if there is + * no match. + * + * Reserved for Internal Red Hat use only. + */ +const struct pci_device_id *pci_hw_deprecated(const struct pci_device_id *ids, + struct pci_dev *dev) +{ + const struct pci_device_id *ret = pci_match_id(ids, dev); + + if (!ret) + return NULL; + + mark_hardware_deprecated(dev_driver_string(&dev->dev), "%04X:%04X @ %s", + dev->device, dev->vendor, pci_name(dev)); + return ret; +} +EXPORT_SYMBOL(pci_hw_deprecated); + +/** + * pci_hw_unmaintained - Tell if a PCI device is unmaintained + * @ids: array of PCI device id structures to search in + * @dev: the PCI device structure to match against + * + * Used by a driver to check whether this device is in its list of unmaintained + * devices. Returns the matching pci_device_id structure or %NULL if there is + * no match. + * + * Reserved for Internal Red Hat use only. + */ +const struct pci_device_id *pci_hw_unmaintained(const struct pci_device_id *ids, + struct pci_dev *dev) +{ + const struct pci_device_id *ret = pci_match_id(ids, dev); + + if (!ret) + return NULL; + + mark_hardware_unmaintained(dev_driver_string(&dev->dev), "%04X:%04X @ %s", + dev->device, dev->vendor, pci_name(dev)); + return ret; +} +EXPORT_SYMBOL(pci_hw_unmaintained); + +/** + * pci_hw_disabled - Tell if a PCI device is disabled + * @ids: array of PCI device id structures to search in + * @dev: the PCI device structure to match against + * + * Used by a driver to check whether this device is in its list of disabled + * devices. Returns the matching pci_device_id structure or %NULL if there is + * no match. + * + * Reserved for Internal Red Hat use only. + */ +const struct pci_device_id *pci_hw_disabled(const struct pci_device_id *ids, + struct pci_dev *dev) +{ + const struct pci_device_id *ret = pci_match_id(ids, dev); + + if (!ret) + return NULL; + + mark_hardware_disabled(dev_driver_string(&dev->dev), "%04X:%04X @ %s", + dev->device, dev->vendor, pci_name(dev)); + return ret; +} +EXPORT_SYMBOL(pci_hw_disabled); +#endif + struct drv_dev_and_id { struct pci_driver *drv; struct pci_dev *dev; diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 65f7f6b0576c..27398de38c0c 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4272,6 +4272,30 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000, DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084, quirk_bridge_cavm_thrx2_pcie_root); +/* + * PCI BAR 5 is not setup correctly for the on-board AHCI controller + * on Broadcom's Vulcan processor. Added a quirk to fix BAR 5 by + * using BAR 4's resources which are populated correctly and NOT + * actually used by the AHCI controller. + */ +static void quirk_fix_vulcan_ahci_bars(struct pci_dev *dev) +{ + struct resource *r = &dev->resource[4]; + + if (!(r->flags & IORESOURCE_MEM) || (r->start == 0)) + return; + + /* Set BAR5 resource to BAR4 */ + dev->resource[5] = *r; + + /* Update BAR5 in pci config space */ + pci_write_config_dword(dev, PCI_BASE_ADDRESS_5, r->start); + + /* Clear BAR4's resource */ + memset(r, 0, sizeof(*r)); +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9027, quirk_fix_vulcan_ahci_bars); + /* * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero) * class code. Fix it. diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index a911252075a6..9bc69f6880f3 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -78,6 +78,7 @@ char aac_driver_version[] = AAC_DRIVER_FULL_VERSION; * Note: The last field is used to index into aac_drivers below. */ static const struct pci_device_id aac_pci_tbl[] = { +#ifndef CONFIG_RHEL_DIFFERENCES { 0x1028, 0x0001, 0x1028, 0x0001, 0, 0, 0 }, /* PERC 2/Si (Iguana/PERC2Si) */ { 0x1028, 0x0002, 0x1028, 0x0002, 0, 0, 1 }, /* PERC 3/Di (Opal/PERC3Di) */ { 0x1028, 0x0003, 0x1028, 0x0003, 0, 0, 2 }, /* PERC 3/Si (SlimFast/PERC3Si */ @@ -145,6 +146,7 @@ static const struct pci_device_id aac_pci_tbl[] = { { 0x9005, 0x0285, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 59 }, /* Adaptec Catch All */ { 0x9005, 0x0286, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 60 }, /* Adaptec Rocket Catch All */ { 0x9005, 0x0288, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 61 }, /* Adaptec NEMER/ARK Catch All */ +#endif { 0x9005, 0x028b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 62 }, /* Adaptec PMC Series 6 (Tupelo) */ { 0x9005, 0x028c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 63 }, /* Adaptec PMC Series 7 (Denali) */ { 0x9005, 0x028d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 64 }, /* Adaptec PMC Series 8 */ diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index ab55681145f8..1f8b0f73597b 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -372,11 +372,13 @@ static int beiscsi_eh_device_reset(struct scsi_cmnd *sc) /*------------------- PCI Driver operations and data ----------------- */ static const struct pci_device_id beiscsi_pci_id_table[] = { +#ifndef CONFIG_RHEL_DIFFERENCES { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) }, { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) }, { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) }, { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) }, { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) }, +#endif { PCI_DEVICE(ELX_VENDOR_ID, OC_SKH_ID1) }, { 0 } }; diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index a47bcce3c9c7..094944a52866 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -82,7 +82,9 @@ MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \ HPSA_DRIVER_VERSION); MODULE_VERSION(HPSA_DRIVER_VERSION); MODULE_LICENSE("GPL"); +#ifndef CONFIG_RHEL_DIFFERENCES MODULE_ALIAS("cciss"); +#endif static int hpsa_simple_mode; module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR); @@ -144,10 +146,12 @@ static const struct pci_device_id hpsa_pci_device_id[] = { {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D}, {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088}, {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f}, +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, {PCI_VENDOR_ID_COMPAQ, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, +#endif {0,} }; diff --git a/drivers/scsi/lpfc/lpfc_ids.h b/drivers/scsi/lpfc/lpfc_ids.h index 6a90e6e53d09..7e48c3bf701d 100644 --- a/drivers/scsi/lpfc/lpfc_ids.h +++ b/drivers/scsi/lpfc/lpfc_ids.h @@ -24,6 +24,7 @@ #include const struct pci_device_id lpfc_id_table[] = { +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY, @@ -54,14 +55,19 @@ const struct pci_device_id lpfc_id_table[] = { PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP, PCI_ANY_ID, PCI_ANY_ID, }, +#endif {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID, PCI_ANY_ID, PCI_ANY_ID, }, +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB, PCI_ANY_ID, PCI_ANY_ID, }, +#endif {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR, PCI_ANY_ID, PCI_ANY_ID, }, +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET, PCI_ANY_ID, PCI_ANY_ID, }, +#endif {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP, @@ -70,6 +76,7 @@ const struct pci_device_id lpfc_id_table[] = { PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB, PCI_ANY_ID, PCI_ANY_ID, }, +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101, @@ -80,6 +87,7 @@ const struct pci_device_id lpfc_id_table[] = { PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S, PCI_ANY_ID, PCI_ANY_ID, }, +#endif {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID, @@ -92,6 +100,7 @@ const struct pci_device_id lpfc_id_table[] = { PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S, PCI_ANY_ID, PCI_ANY_ID, }, +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF, @@ -102,18 +111,23 @@ const struct pci_device_id lpfc_id_table[] = { PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TOMCAT, PCI_ANY_ID, PCI_ANY_ID, }, +#endif {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FALCON, PCI_ANY_ID, PCI_ANY_ID, }, +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BALIUS, PCI_ANY_ID, PCI_ANY_ID, }, +#endif {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC, PCI_ANY_ID, PCI_ANY_ID, }, +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC_VF, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE_VF, PCI_ANY_ID, PCI_ANY_ID, }, +#endif {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_G6_FC, PCI_ANY_ID, PCI_ANY_ID, }, {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_G7_FC, diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 82e1e24257bc..d256b02a5d2f 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -149,6 +149,7 @@ megasas_set_ld_removed_by_fw(struct megasas_instance *instance); */ static struct pci_device_id megasas_pci_table[] = { +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, /* xscale IOP */ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, @@ -157,16 +158,19 @@ static struct pci_device_id megasas_pci_table[] = { /* ppc IOP */ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, /* gen2*/ +#endif {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, /* gen2*/ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, /* skinny*/ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, /* skinny*/ +#ifndef CONFIG_RHEL_DIFFERENCES {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, /* xscale IOP, vega */ {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, /* xscale IOP */ +#endif {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, /* Fusion */ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 00792767c620..2ee890521ed7 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -12605,6 +12605,7 @@ bool scsih_ncq_prio_supp(struct scsi_device *sdev) * The pci device ids are defined in mpi/mpi2_cnfg.h. */ static const struct pci_device_id mpt3sas_pci_table[] = { +#ifndef CONFIG_RHEL_DIFFERENCES /* Spitfire ~ 2004 */ { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2004, PCI_ANY_ID, PCI_ANY_ID }, @@ -12623,6 +12624,7 @@ static const struct pci_device_id mpt3sas_pci_table[] = { PCI_ANY_ID, PCI_ANY_ID }, { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_2, PCI_ANY_ID, PCI_ANY_ID }, +#endif /* Thunderbolt ~ 2208 */ { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_1, PCI_ANY_ID, PCI_ANY_ID }, @@ -12647,9 +12649,11 @@ static const struct pci_device_id mpt3sas_pci_table[] = { PCI_ANY_ID, PCI_ANY_ID }, { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SWITCH_MPI_EP_1, PCI_ANY_ID, PCI_ANY_ID }, +#ifndef CONFIG_RHEL_DIFFERENCES /* SSS6200 */ { MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SSS6200, PCI_ANY_ID, PCI_ANY_ID }, +#endif /* Fury ~ 3004 and 3008 */ { MPI2_MFGPAGE_VENDORID_LSI, MPI25_MFGPAGE_DEVID_SAS3004, PCI_ANY_ID, PCI_ANY_ID }, diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index abcd30917263..3f0b22e61350 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -7937,6 +7937,7 @@ static const struct pci_error_handlers qla2xxx_err_handler = { }; static struct pci_device_id qla2xxx_pci_tbl[] = { +#ifndef CONFIG_RHEL_DIFFERENCES { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) }, @@ -7949,13 +7950,18 @@ static struct pci_device_id qla2xxx_pci_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8432) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) }, +#endif { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2532) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2031) }, +#ifndef CONFIG_RHEL_DIFFERENCES { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8001) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8021) }, +#endif { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8031) }, +#ifndef CONFIG_RHEL_DIFFERENCES { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISPF001) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8044) }, +#endif { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2071) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2271) }, { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2261) }, diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index 0ae936d839f1..c7b3fe22e3e4 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -9855,6 +9855,7 @@ static struct pci_device_id qla4xxx_pci_tbl[] = { .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, }, +#ifndef CONFIG_RHEL_DIFFERENCES { .vendor = PCI_VENDOR_ID_QLOGIC, .device = PCI_DEVICE_ID_QLOGIC_ISP8022, @@ -9873,6 +9874,7 @@ static struct pci_device_id qla4xxx_pci_tbl[] = { .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, }, +#endif {0, 0}, }; MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 47a1c8bddf86..e309d992e2ad 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -5683,6 +5683,13 @@ static void hub_event(struct work_struct *work) (u16) hub->change_bits[0], (u16) hub->event_bits[0]); + /* Don't disconnect USB-SATA on TrimSlice */ + if (strcmp(dev_name(hdev->bus->controller), "tegra-ehci.0") == 0) { + if ((hdev->state == 7) && (hub->change_bits[0] == 0) && + (hub->event_bits[0] == 0x2)) + hub->event_bits[0] = 0; + } + /* Lock the device, then check to see if we were * disconnected while waiting for the lock to succeed. */ usb_lock_device(hdev); diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index 38becd8d578c..f4ec685879cf 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -2792,6 +2792,19 @@ static int virtio_mem_probe(struct virtio_device *vdev) /* trigger a config update to start processing the requested_size */ if (!vm->in_kdump) { +#ifdef CONFIG_RHEL_DIFFERENCES + static bool printed; + + /* + * virtio-mem, and especially its memory hot(un)plug + * functionality, is tech-preview. + */ + if (!printed) { + printed = true; + mark_tech_preview("virtio_mem", THIS_MODULE); + } +#endif /* CONFIG_RHEL_DIFFERENCES */ + atomic_set(&vm->config_changed, 1); queue_work(system_freezable_wq, &vm->wq); } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index c5021ca0a28a..b64257a6eebc 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -4760,6 +4760,7 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb) } if (sbi->s_mount_opt & EXT4_MOUNT_DAX_ALWAYS) { + static bool printed = false; if (ext4_has_feature_inline_data(sb)) { ext4_msg(sb, KERN_ERR, "Cannot use DAX on a filesystem" " that may contain inline data"); @@ -4770,6 +4771,10 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb) "DAX unsupported by block device."); goto failed_mount; } + if (!printed) { + mark_tech_preview("ext4 direct access (dax)", NULL); + printed = true; + } } if (ext4_has_feature_encrypt(sb) && es->s_encryption_level) { diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index d84714e4e46a..689297b7b003 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1602,9 +1602,14 @@ xfs_fs_fill_super( sb->s_flags |= SB_I_VERSION; if (xfs_has_dax_always(mp)) { + static bool printed = false; error = xfs_setup_dax_always(mp); if (error) goto out_filestream_unmount; + if (!printed) { + mark_tech_preview("xfs direct access (dax)", NULL); + printed = true; + } } if (xfs_has_discard(mp)) { diff --git a/include/linux/efi.h b/include/linux/efi.h index ccd4d3f91c98..e64643e3e364 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -43,6 +43,8 @@ #define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1))) #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) +#define EFI_IS_ERROR(x) ((x) & (1UL << (BITS_PER_LONG-1))) + typedef unsigned long efi_status_t; typedef u8 efi_bool_t; typedef u16 efi_char16_t; /* UNICODE character */ @@ -829,6 +831,14 @@ extern int __init efi_setup_pcdp_console(char *); #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */ #define EFI_MEM_NO_SOFT_RESERVE 11 /* Is the kernel configured to ignore soft reservations? */ #define EFI_PRESERVE_BS_REGIONS 12 /* Are EFI boot-services memory segments available? */ +#define EFI_SECURE_BOOT 13 /* Are we in Secure Boot mode? */ + +enum efi_secureboot_mode { + efi_secureboot_mode_unset, + efi_secureboot_mode_unknown, + efi_secureboot_mode_disabled, + efi_secureboot_mode_enabled, +}; #ifdef CONFIG_EFI /* @@ -840,6 +850,8 @@ static inline bool efi_enabled(int feature) } extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); +extern void __init efi_set_secure_boot(enum efi_secureboot_mode mode); + bool __pure __efi_soft_reserve_enabled(void); static inline bool __pure efi_soft_reserve_enabled(void) @@ -860,6 +872,8 @@ static inline bool efi_enabled(int feature) static inline void efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} +static inline void efi_set_secure_boot(enum efi_secureboot_mode mode) {} + static inline bool efi_soft_reserve_enabled(void) { return false; @@ -872,6 +886,7 @@ static inline bool efi_rt_services_supported(unsigned int mask) #endif extern int efi_status_to_err(efi_status_t status); +extern const char *efi_status_to_str(efi_status_t status); /* * Variable Attributes @@ -1124,13 +1139,6 @@ static inline bool efi_runtime_disabled(void) { return true; } extern void efi_call_virt_check_flags(unsigned long flags, const char *call); extern unsigned long efi_call_virt_save_flags(void); -enum efi_secureboot_mode { - efi_secureboot_mode_unset, - efi_secureboot_mode_unknown, - efi_secureboot_mode_disabled, - efi_secureboot_mode_enabled, -}; - static inline enum efi_secureboot_mode efi_get_secureboot_mode(efi_get_variable_t *get_var) { diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 33f47a996513..7a716c0b05bc 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -503,4 +503,23 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { } /* OTHER_WRITABLE? Generally considered a bad idea. */ \ BUILD_BUG_ON_ZERO((perms) & 2) + \ (perms)) + +struct module; + +#ifdef CONFIG_RHEL_DIFFERENCES +void mark_hardware_unmaintained(const char *driver_name, char *fmt, ...); +void mark_driver_unmaintained(const char *driver_name); +void mark_hardware_deprecated(const char *driver_name, char *fmt, ...); +void mark_driver_deprecated(const char *driver_name); +void mark_hardware_disabled(const char *driver_name, char *fmt, ...); +void mark_tech_preview(const char *msg, struct module *mod); +#else +static inline void mark_hardware_unsupported(const char *driver_name, char *fmt, ...) { } +static inline void mark_driver_unmaintained(const char *driver_name) { } +static inline void mark_hardware_deprecated(const char *driver_name, char *fmt, ...) { } +static inline void mark_driver_deprecated(const char *driver_name) { } +static inline void mark_hardware_disabled(const char *driver_name, char *fmt, ...) { } +static inline void mark_tech_preview(const char *msg, struct module *mod) { } +#endif + #endif diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h index 819ec92dc2a8..b49986bfbeca 100644 --- a/include/linux/lsm_hook_defs.h +++ b/include/linux/lsm_hook_defs.h @@ -392,6 +392,8 @@ LSM_HOOK(void, LSM_RET_VOID, bpf_prog_free_security, struct bpf_prog_aux *aux) #endif /* CONFIG_BPF_SYSCALL */ LSM_HOOK(int, 0, locked_down, enum lockdown_reason what) +LSM_HOOK(int, 0, lock_kernel_down, const char *where, enum lockdown_reason level) + #ifdef CONFIG_PERF_EVENTS LSM_HOOK(int, 0, perf_event_open, struct perf_event_attr *attr, int type) diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h index 3bf5c658bc44..4701bc5ce2f5 100644 --- a/include/linux/lsm_hooks.h +++ b/include/linux/lsm_hooks.h @@ -1544,6 +1544,12 @@ * * @what: kernel feature being accessed * + * @lock_kernel_down + * Put the kernel into lock-down mode. + * + * @where: Where the lock-down is originating from (e.g. command line option) + * @level: The lock-down level (can only increase) + * * Security hooks for perf events * * @perf_event_open: diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index aed44e9b5d89..08517376c765 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -1390,11 +1390,9 @@ static inline unsigned long *section_to_usemap(struct mem_section *ms) static inline struct mem_section *__nr_to_section(unsigned long nr) { #ifdef CONFIG_SPARSEMEM_EXTREME - if (!mem_section) + if (!*mem_section || !mem_section[SECTION_NR_TO_ROOT(nr)]) return NULL; #endif - if (!mem_section[SECTION_NR_TO_ROOT(nr)]) - return NULL; return &mem_section[SECTION_NR_TO_ROOT(nr)][nr & SECTION_ROOT_MASK]; } extern size_t mem_section_usage_size(void); diff --git a/include/linux/module.h b/include/linux/module.h index 1e135fd5c076..6ec4d001c1e2 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -381,6 +381,7 @@ struct module { struct module_attribute *modinfo_attrs; const char *version; const char *srcversion; + const char *rhelversion; struct kobject *holders_dir; /* Exported symbols */ diff --git a/include/linux/panic.h b/include/linux/panic.h index f5844908a089..901d51012738 100644 --- a/include/linux/panic.h +++ b/include/linux/panic.h @@ -74,7 +74,24 @@ static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout) #define TAINT_LIVEPATCH 15 #define TAINT_AUX 16 #define TAINT_RANDSTRUCT 17 -#define TAINT_FLAGS_COUNT 18 +/* Start of Red Hat-specific taint flags */ +#define TAINT_18 18 +#define TAINT_19 19 +#define TAINT_20 20 +#define TAINT_21 21 +#define TAINT_22 22 +#define TAINT_23 23 +#define TAINT_24 24 +#define TAINT_25 25 +#define TAINT_26 26 +#define TAINT_SUPPORT_REMOVED 27 +/* Bits 28 - 31 are reserved for Red Hat use only */ +#define TAINT_RESERVED28 28 +#define TAINT_RESERVED29 29 +#define TAINT_RESERVED30 30 +#define TAINT_UNPRIVILEGED_BPF 31 +/* End of Red Hat-specific taint flags */ +#define TAINT_FLAGS_COUNT 32 #define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1) struct taint_flag { diff --git a/include/linux/pci.h b/include/linux/pci.h index 8253a5413d7c..8dcbd8f1700f 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1490,6 +1490,22 @@ int pci_add_dynid(struct pci_driver *drv, unsigned long driver_data); const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, struct pci_dev *dev); + +#ifdef CONFIG_RHEL_DIFFERENCES +const struct pci_device_id *pci_hw_deprecated(const struct pci_device_id *ids, + struct pci_dev *dev); +const struct pci_device_id *pci_hw_unmaintained(const struct pci_device_id *ids, + struct pci_dev *dev); +const struct pci_device_id *pci_hw_disabled(const struct pci_device_id *ids, + struct pci_dev *dev); +#else +static inline const struct pci_device_id *pci_hw_deprecated(const struct pci_device_id *ids, + struct pci_dev *dev) { return NULL; } +static inline const struct pci_device_id *pci_hw_unmaintained(const struct pci_device_id *ids, + struct pci_dev *dev) { return NULL; } +static inline const struct pci_device_id *pci_hw_disabled(const struct pci_device_id *ids, + struct pci_dev *dev) {return NULL; } +#endif int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, int pass); diff --git a/include/linux/random.h b/include/linux/random.h index c45b2693e51f..4edfdb3e44a9 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -14,6 +14,11 @@ #include +struct random_extrng { + ssize_t (*extrng_read)(void __user *buf, size_t buflen); + struct module *owner; +}; + struct random_ready_callback { struct list_head list; void (*func)(struct random_ready_callback *rdy); @@ -44,6 +49,8 @@ extern bool rng_is_initialized(void); extern int add_random_ready_callback(struct random_ready_callback *rdy); extern void del_random_ready_callback(struct random_ready_callback *rdy); extern int __must_check get_random_bytes_arch(void *buf, int nbytes); +void random_register_extrng(const struct random_extrng *rng); +void random_unregister_extrng(void); #ifndef MODULE extern const struct file_operations random_fops, urandom_fops; diff --git a/include/linux/rh_kabi.h b/include/linux/rh_kabi.h new file mode 100644 index 000000000000..c7b42c1f1681 --- /dev/null +++ b/include/linux/rh_kabi.h @@ -0,0 +1,515 @@ +/* + * rh_kabi.h - Red Hat kABI abstraction header + * + * Copyright (c) 2014 Don Zickus + * Copyright (c) 2015-2020 Jiri Benc + * Copyright (c) 2015 Sabrina Dubroca, Hannes Frederic Sowa + * Copyright (c) 2016-2018 Prarit Bhargava + * Copyright (c) 2017 Paolo Abeni, Larry Woodman + * + * This file is released under the GPLv2. + * See the file COPYING for more details. + * + * These kabi macros hide the changes from the kabi checker and from the + * process that computes the exported symbols' checksums. + * They have 2 variants: one (defined under __GENKSYMS__) used when + * generating the checksums, and the other used when building the kernel's + * binaries. + * + * The use of these macros does not guarantee that the usage and modification + * of code is correct. As with all Red Hat only changes, an engineer must + * explain why the use of the macro is valid in the patch containing the + * changes. + * + */ + +#ifndef _LINUX_RH_KABI_H +#define _LINUX_RH_KABI_H + +#include +#include +#include + +/* + * NOTE + * Unless indicated otherwise, don't use ';' after these macros as it + * messes up the kABI checker by changing what the resulting token string + * looks like. Instead let the macros add the ';' so it can be properly + * hidden from the kABI checker (mainly for RH_KABI_EXTEND, but applied to + * most macros for uniformity). + * + * + * RH_KABI_CONST + * Adds a new const modifier to a function parameter preserving the old + * checksum. + * + * RH_KABI_ADD_MODIFIER + * Adds a new modifier to a function parameter or a typedef, preserving + * the old checksum. Useful e.g. for adding rcu annotations or changing + * int to unsigned. Beware that this may change the semantics; if you're + * sure this is safe, always explain why binary compatibility with 3rd + * party modules is retained. + * + * RH_KABI_DEPRECATE + * Marks the element as deprecated and make it unusable by modules while + * keeping a hole in its place to preserve binary compatibility. + * + * RH_KABI_DEPRECATE_FN + * Marks the function pointer as deprecated and make it unusable by modules + * while keeping a hole in its place to preserve binary compatibility. + * + * RH_KABI_EXTEND + * Adds a new field to a struct. This must always be added to the end of + * the struct. Before using this macro, make sure this is actually safe + * to do - there is a number of conditions under which it is *not* safe. + * In particular (but not limited to), this macro cannot be used: + * - if the struct in question is embedded in another struct, or + * - if the struct is allocated by drivers either statically or + * dynamically, or + * - if the struct is allocated together with driver data (an example of + * such behavior is struct net_device or struct request). + * + * RH_KABI_EXTEND_WITH_SIZE + * Adds a new element (usually a struct) to a struct and reserves extra + * space for the new element. The provided 'size' is the total space to + * be added in longs (i.e. it's 8 * 'size' bytes), including the size of + * the added element. It is automatically checked that the new element + * does not overflow the reserved space, now nor in the future. However, + * no attempt is done to check the content of the added element (struct) + * for kABI conformance - kABI checking inside the added element is + * effectively switched off. + * For any struct being added by RH_KABI_EXTEND_WITH_SIZE, it is + * recommended its content to be documented as not covered by kABI + * guarantee. + * + * RH_KABI_FILL_HOLE + * Fills a hole in a struct. + * + * Warning: only use if a hole exists for _all_ arches. Use pahole to verify. + * + * RH_KABI_RENAME + * Renames an element without changing its type. This macro can be used in + * bitfields, for example. + * + * NOTE: this macro does not add the final ';' + * + * RH_KABI_REPLACE + * Replaces the _orig field by the _new field. The size of the occupied + * space is preserved, it's fine if the _new field is smaller than the + * _orig field. If a _new field is larger or has a different alignment, + * compilation will abort. + * + * RH_KABI_REPLACE_SPLIT + * Works the same as RH_KABI_REPLACE but replaces a single _orig field by + * multiple new fields. The checks for size and alignment done by + * RH_KABI_REPLACE are still applied. + * + * RH_KABI_HIDE_INCLUDE + * Hides the given include file from kABI checksum computations. This is + * used when a newly added #include makes a previously opaque struct + * visible. + * + * Example usage: + * #include RH_KABI_HIDE_INCLUDE() + * + * RH_KABI_FAKE_INCLUDE + * Pretends inclusion of the given file for kABI checksum computations. + * This is used when upstream removed a particular #include but that made + * some structures opaque that were previously visible and is causing kABI + * checker failures. + * + * Example usage: + * #include RH_KABI_FAKE_INCLUDE() + * + * RH_KABI_RESERVE + * Adds a reserved field to a struct. This is done prior to kABI freeze + * for structs that cannot be expanded later using RH_KABI_EXTEND (for + * example because they are embedded in another struct or because they are + * allocated by drivers or because they use unusual memory layout). The + * size of the reserved field is 'unsigned long' and is assumed to be + * 8 bytes. + * + * The argument is a number unique for the given struct; usually, multiple + * RH_KABI_RESERVE macros are added to a struct with numbers starting from + * one. + * + * Example usage: + * struct foo { + * int a; + * RH_KABI_RESERVE(1) + * RH_KABI_RESERVE(2) + * RH_KABI_RESERVE(3) + * RH_KABI_RESERVE(4) + * }; + * + * RH_KABI_USE + * Uses a previously reserved field or multiple fields. The arguments are + * one or more numbers assigned to RH_KABI_RESERVE, followed by a field to + * be put in their place. The compiler ensures that the new field is not + * larger than the reserved area. + * + * Example usage: + * struct foo { + * int a; + * RH_KABI_USE(1, int b) + * RH_KABI_USE(2, 3, int c[3]) + * RH_KABI_RESERVE(4) + * }; + * + * RH_KABI_USE_SPLIT + * Works the same as RH_KABI_USE but replaces a single reserved field by + * multiple new fields. + * + * RH_KABI_AUX_EMBED + * RH_KABI_AUX_PTR + * Adds an extenstion of a struct in the form of "auxiliary structure". + * This is done prior to kABI freeze for structs that cannot be expanded + * later using RH_KABI_EXTEND. See also RH_KABI_RESERVED, these two + * approaches can (and often are) combined. + * + * To use this for 'struct foo' (the "base structure"), define a new + * structure called 'struct foo_rh'; this new struct is called "auxiliary + * structure". Then add RH_KABI_AUX_EMBED or RH_KABI_AUX_PTR to the end + * of the base structure. The argument is the name of the base structure, + * without the 'struct' keyword. + * + * RH_KABI_AUX_PTR stores a pointer to the aux structure in the base + * struct. The lifecycle of the aux struct needs to be properly taken + * care of. + * + * RH_KABI_AUX_EMBED embeds the aux struct into the base struct. This + * cannot be used when the base struct is itself embedded into another + * struct, allocated in an array, etc. + * + * Both approaches (ptr and embed) work correctly even when the aux struct + * is allocated by modules. To ensure this, the code responsible for + * allocation/assignment of the aux struct has to properly set the size of + * the aux struct; see the RH_KABI_AUX_SET_SIZE and RH_KABI_AUX_INIT_SIZE + * macros. + * + * New fields can be later added to the auxiliary structure, always to its + * end. Note the auxiliary structure cannot be shrunk in size later (i.e., + * fields cannot be removed, only deprecated). Any code accessing fields + * from the aux struct must guard the access using the RH_KABI_AUX macro. + * The access itself is then done via a '_rh' field in the base struct. + * + * The auxiliary structure is not guaranteed for access by modules unless + * explicitly commented as such in the declaration of the aux struct + * itself or some of its elements. + * + * Example: + * + * struct foo_rh { + * int newly_added; + * }; + * + * struct foo { + * bool big_hammer; + * RH_KABI_AUX_PTR(foo) + * }; + * + * void use(struct foo *f) + * { + * if (RH_KABI_AUX(f, foo, newly_added)) + * f->_rh->newly_added = 123; + * else + * // the field 'newly_added' is not present in the passed + * // struct, fall back to old behavior + * f->big_hammer = true; + * } + * + * static struct foo_rh my_foo_rh { + * .newly_added = 0; + * } + * + * static struct foo my_foo = { + * .big_hammer = false, + * ._rh = &my_foo_rh, + * RH_KABI_AUX_INIT_SIZE(foo) + * }; + * + * RH_KABI_USE_AUX_PTR + * Creates an auxiliary structure post kABI freeze. This works by using + * two reserved fields (thus there has to be two reserved fields still + * available) and converting them to RH_KABI_AUX_PTR. + * + * Example: + * + * struct foo_rh { + * }; + * + * struct foo { + * int a; + * RH_KABI_RESERVE(1) + * RH_KABI_USE_AUX_PTR(2, 3, foo) + * }; + * + * RH_KABI_AUX_SET_SIZE + * RH_KABI_AUX_INIT_SIZE + * Calculates and stores the size of the auxiliary structure. + * + * RH_KABI_AUX_SET_SIZE is for dynamically allocated base structs, + * RH_KABI_AUX_INIT_SIZE is for statically allocated case structs. + * + * These macros must be called from the allocation (RH_KABI_AUX_SET_SIZE) + * or declaration (RH_KABI_AUX_INIT_SIZE) site, regardless of whether + * that happens in the kernel or in a module. Without calling one of + * these macros, the aux struct will appear to have no fields to the + * kernel. + * + * Note: since RH_KABI_AUX_SET_SIZE is intended to be invoked outside of + * a struct definition, it does not add the semicolon and must be + * terminated by semicolon by the caller. + * + * RH_KABI_AUX + * Verifies that the given field exists in the given auxiliary structure. + * This MUST be called prior to accessing that field; failing to do that + * may lead to invalid memory access. + * + * The first argument is a pointer to the base struct, the second argument + * is the name of the base struct (without the 'struct' keyword), the + * third argument is the field name. + * + * This macro works for structs extended by either of RH_KABI_AUX_EMBED, + * RH_KABI_AUX_PTR and RH_KABI_USE_AUX_PTR. + * + * RH_KABI_FORCE_CHANGE + * Force change of the symbol checksum. The argument of the macro is a + * version for cases we need to do this more than once. + * + * This macro does the opposite: it changes the symbol checksum without + * actually changing anything about the exported symbol. It is useful for + * symbols that are not whitelisted, we're changing them in an + * incompatible way and want to prevent 3rd party modules to silently + * corrupt memory. Instead, by changing the symbol checksum, such modules + * won't be loaded by the kernel. This macro should only be used as a + * last resort when all other KABI workarounds have failed. + * + * RH_KABI_EXCLUDE + * !!! WARNING: DANGEROUS, DO NOT USE unless you are aware of all the !!! + * !!! implications. This should be used ONLY EXCEPTIONALLY and only !!! + * !!! under specific circumstances. Very likely, this macro does not !!! + * !!! do what you expect it to do. Note that any usage of this macro !!! + * !!! MUST be paired with a RH_KABI_FORCE_CHANGE annotation of !!! + * !!! a suitable symbol (or an equivalent safeguard) and the commit !!! + * !!! log MUST explain why the chosen solution is appropriate. !!! + * + * Exclude the element from checksum generation. Any such element is + * considered not to be part of the kABI whitelist and may be changed at + * will. Note however that it's the responsibility of the developer + * changing the element to ensure 3rd party drivers using this element + * won't panic, for example by not allowing them to be loaded. That can + * be achieved by changing another, non-whitelisted symbol they use, + * either by nature of the change or by using RH_KABI_FORCE_CHANGE. + * + * Also note that any change to the element must preserve its size. Change + * of the size is not allowed and would constitute a silent kABI breakage. + * Beware that the RH_KABI_EXCLUDE macro does not do any size checks. + * + * RH_KABI_BROKEN_INSERT + * RH_KABI_BROKEN_REMOVE + * Insert a field to the middle of a struct / delete a field from a struct. + * Note that this breaks kABI! It can be done only when it's certain that + * no 3rd party driver can validly reach into the struct. A typical + * example is a struct that is: both (a) referenced only through a long + * chain of pointers from another struct that is part of a whitelisted + * symbol and (b) kernel internal only, it should have never been visible + * to genksyms in the first place. + * + * Another example are structs that are explicitly exempt from kABI + * guarantee but we did not have enough foresight to use RH_KABI_EXCLUDE. + * In this case, the warning for RH_KABI_EXCLUDE applies. + * + * A detailed explanation of correctness of every RH_KABI_BROKEN_* macro + * use is especially important. + * + * RH_KABI_BROKEN_INSERT_BLOCK + * RH_KABI_BROKEN_REMOVE_BLOCK + * A version of RH_KABI_BROKEN_INSERT / REMOVE that allows multiple fields + * to be inserted or removed together. All fields need to be terminated + * by ';' inside(!) the macro parameter. The macro itself must not be + * terminated by ';'. + * + * RH_KABI_BROKEN_REPLACE + * Replace a field by a different one without doing any checking. This + * allows replacing a field by another with a different size. Similarly + * to other RH_KABI_BROKEN macros, use of this indicates a kABI breakage. + * + * RH_KABI_BROKEN_INSERT_ENUM + * RH_KABI_BROKEN_REMOVE_ENUM + * Insert a field to the middle of an enumaration type / delete a field from + * an enumaration type. Note that this can break kABI especially if the + * number of enum fields is used in an array within a structure. It can be + * done only when it is certain that no 3rd party driver will use the + * enumeration type or a structure that embeds an array with size determined + * by an enumeration type. + * + * RH_KABI_EXTEND_ENUM + * Adds a new field to an enumeration type. This must always be added to + * the end of the enum. Before using this macro, make sure this is actually + * safe to do. + */ + +#undef linux +#define linux linux + +#ifdef __GENKSYMS__ + +# define RH_KABI_CONST +# define RH_KABI_ADD_MODIFIER(_new) +# define RH_KABI_EXTEND(_new) +# define RH_KABI_FILL_HOLE(_new) +# define RH_KABI_FORCE_CHANGE(ver) __attribute__((rh_kabi_change ## ver)) +# define RH_KABI_RENAME(_orig, _new) _orig +# define RH_KABI_HIDE_INCLUDE(_file) +# define RH_KABI_FAKE_INCLUDE(_file) _file +# define RH_KABI_BROKEN_INSERT(_new) +# define RH_KABI_BROKEN_REMOVE(_orig) _orig; +# define RH_KABI_BROKEN_INSERT_BLOCK(_new) +# define RH_KABI_BROKEN_REMOVE_BLOCK(_orig) _orig +# define RH_KABI_BROKEN_REPLACE(_orig, _new) _orig; +# define RH_KABI_BROKEN_INSERT_ENUM(_new) +# define RH_KABI_BROKEN_REMOVE_ENUM(_orig) _orig, +# define RH_KABI_EXTEND_ENUM(_new) + +# define _RH_KABI_DEPRECATE(_type, _orig) _type _orig +# define _RH_KABI_DEPRECATE_FN(_type, _orig, _args...) _type (*_orig)(_args) +# define _RH_KABI_REPLACE(_orig, _new) _orig +# define _RH_KABI_EXCLUDE(_elem) + +#else + +# define RH_KABI_ALIGN_WARNING ". Disable CONFIG_RH_KABI_SIZE_ALIGN_CHECKS if debugging." + +# define RH_KABI_CONST const +# define RH_KABI_ADD_MODIFIER(_new) _new +# define RH_KABI_EXTEND(_new) _new; +# define RH_KABI_FILL_HOLE(_new) _new; +# define RH_KABI_FORCE_CHANGE(ver) +# define RH_KABI_RENAME(_orig, _new) _new +# define RH_KABI_HIDE_INCLUDE(_file) _file +# define RH_KABI_FAKE_INCLUDE(_file) +# define RH_KABI_BROKEN_INSERT(_new) _new; +# define RH_KABI_BROKEN_REMOVE(_orig) +# define RH_KABI_BROKEN_INSERT_BLOCK(_new) _new +# define RH_KABI_BROKEN_REMOVE_BLOCK(_orig) +# define RH_KABI_BROKEN_REPLACE(_orig, _new) _new; +# define RH_KABI_BROKEN_INSERT_ENUM(_new) _new, +# define RH_KABI_BROKEN_REMOVE_ENUM(_orig) +# define RH_KABI_EXTEND_ENUM(_new) _new, + +#if IS_BUILTIN(CONFIG_RH_KABI_SIZE_ALIGN_CHECKS) +# define __RH_KABI_CHECK_SIZE_ALIGN(_orig, _new) \ + union { \ + _Static_assert(sizeof(struct{_new;}) <= sizeof(struct{_orig;}), \ + __FILE__ ":" __stringify(__LINE__) ": " __stringify(_new) " is larger than " __stringify(_orig) RH_KABI_ALIGN_WARNING); \ + _Static_assert(__alignof__(struct{_new;}) <= __alignof__(struct{_orig;}), \ + __FILE__ ":" __stringify(__LINE__) ": " __stringify(_orig) " is not aligned the same as " __stringify(_new) RH_KABI_ALIGN_WARNING); \ + } +# define __RH_KABI_CHECK_SIZE(_item, _size) \ + _Static_assert(sizeof(struct{_item;}) <= _size, \ + __FILE__ ":" __stringify(__LINE__) ": " __stringify(_item) " is larger than the reserved size (" __stringify(_size) " bytes)" RH_KABI_ALIGN_WARNING) +#else +# define __RH_KABI_CHECK_SIZE_ALIGN(_orig, _new) +# define __RH_KABI_CHECK_SIZE(_item, _size) +#endif + +#define RH_KABI_UNIQUE_ID __PASTE(rh_kabi_hidden_, __LINE__) + +# define _RH_KABI_DEPRECATE(_type, _orig) _type rh_reserved_##_orig +# define _RH_KABI_DEPRECATE_FN(_type, _orig, _args...) \ + _type (* rh_reserved_##_orig)(_args) +# define _RH_KABI_REPLACE(_orig, _new) \ + union { \ + _new; \ + struct { \ + _orig; \ + } RH_KABI_UNIQUE_ID; \ + __RH_KABI_CHECK_SIZE_ALIGN(_orig, _new); \ + } + +# define _RH_KABI_EXCLUDE(_elem) _elem + +#endif /* __GENKSYMS__ */ + +# define RH_KABI_DEPRECATE(_type, _orig) _RH_KABI_DEPRECATE(_type, _orig); +# define RH_KABI_DEPRECATE_FN(_type, _orig, _args...) \ + _RH_KABI_DEPRECATE_FN(_type, _orig, _args); +# define RH_KABI_REPLACE(_orig, _new) _RH_KABI_REPLACE(_orig, _new); + +#define _RH_KABI_REPLACE1(_new) _new; +#define _RH_KABI_REPLACE2(_new, ...) _new; _RH_KABI_REPLACE1(__VA_ARGS__) +#define _RH_KABI_REPLACE3(_new, ...) _new; _RH_KABI_REPLACE2(__VA_ARGS__) +#define _RH_KABI_REPLACE4(_new, ...) _new; _RH_KABI_REPLACE3(__VA_ARGS__) +#define _RH_KABI_REPLACE5(_new, ...) _new; _RH_KABI_REPLACE4(__VA_ARGS__) +#define _RH_KABI_REPLACE6(_new, ...) _new; _RH_KABI_REPLACE5(__VA_ARGS__) +#define _RH_KABI_REPLACE7(_new, ...) _new; _RH_KABI_REPLACE6(__VA_ARGS__) +#define _RH_KABI_REPLACE8(_new, ...) _new; _RH_KABI_REPLACE7(__VA_ARGS__) +#define _RH_KABI_REPLACE9(_new, ...) _new; _RH_KABI_REPLACE8(__VA_ARGS__) +#define _RH_KABI_REPLACE10(_new, ...) _new; _RH_KABI_REPLACE9(__VA_ARGS__) +#define _RH_KABI_REPLACE11(_new, ...) _new; _RH_KABI_REPLACE10(__VA_ARGS__) +#define _RH_KABI_REPLACE12(_new, ...) _new; _RH_KABI_REPLACE11(__VA_ARGS__) + +#define RH_KABI_REPLACE_SPLIT(_orig, ...) _RH_KABI_REPLACE(_orig, \ + struct { __PASTE(_RH_KABI_REPLACE, COUNT_ARGS(__VA_ARGS__))(__VA_ARGS__) }); + +# define RH_KABI_RESERVE(n) _RH_KABI_RESERVE(n); + +#define _RH_KABI_USE1(n, _new) _RH_KABI_RESERVE(n), _new +#define _RH_KABI_USE2(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE1(__VA_ARGS__) +#define _RH_KABI_USE3(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE2(__VA_ARGS__) +#define _RH_KABI_USE4(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE3(__VA_ARGS__) +#define _RH_KABI_USE5(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE4(__VA_ARGS__) +#define _RH_KABI_USE6(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE5(__VA_ARGS__) +#define _RH_KABI_USE7(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE6(__VA_ARGS__) +#define _RH_KABI_USE8(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE7(__VA_ARGS__) +#define _RH_KABI_USE9(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE8(__VA_ARGS__) +#define _RH_KABI_USE10(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE9(__VA_ARGS__) +#define _RH_KABI_USE11(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE10(__VA_ARGS__) +#define _RH_KABI_USE12(n, ...) _RH_KABI_RESERVE(n); _RH_KABI_USE11(__VA_ARGS__) + +#define _RH_KABI_USE(...) _RH_KABI_REPLACE(__VA_ARGS__) +#define RH_KABI_USE(n, ...) _RH_KABI_USE(__PASTE(_RH_KABI_USE, COUNT_ARGS(__VA_ARGS__))(n, __VA_ARGS__)); + +# define RH_KABI_USE_SPLIT(n, ...) RH_KABI_REPLACE_SPLIT(_RH_KABI_RESERVE(n), __VA_ARGS__) + +# define _RH_KABI_RESERVE(n) unsigned long rh_reserved##n + +#define RH_KABI_EXCLUDE(_elem) _RH_KABI_EXCLUDE(_elem); + +#define RH_KABI_EXTEND_WITH_SIZE(_new, _size) \ + RH_KABI_EXTEND(union { \ + _new; \ + unsigned long RH_KABI_UNIQUE_ID[_size]; \ + __RH_KABI_CHECK_SIZE(_new, 8 * (_size)); \ + }) + +#define _RH_KABI_AUX_PTR(_struct) \ + size_t _struct##_size_rh; \ + _RH_KABI_EXCLUDE(struct _struct##_rh *_rh) +#define RH_KABI_AUX_PTR(_struct) \ + _RH_KABI_AUX_PTR(_struct); + +#define _RH_KABI_AUX_EMBED(_struct) \ + size_t _struct##_size_rh; \ + _RH_KABI_EXCLUDE(struct _struct##_rh _rh) +#define RH_KABI_AUX_EMBED(_struct) \ + _RH_KABI_AUX_EMBED(_struct); + +#define RH_KABI_USE_AUX_PTR(n1, n2, _struct) \ + RH_KABI_USE(n1, n2, \ + struct { RH_KABI_AUX_PTR(_struct) }) + +#define RH_KABI_AUX_SET_SIZE(_name, _struct) ({ \ + (_name)->_struct##_size_rh = sizeof(struct _struct##_rh); \ +}) + +#define RH_KABI_AUX_INIT_SIZE(_struct) \ + ._struct##_size_rh = sizeof(struct _struct##_rh), + +#define RH_KABI_AUX(_ptr, _struct, _field) ({ \ + size_t __off = offsetof(struct _struct##_rh, _field); \ + (_ptr)->_struct##_size_rh > __off ? true : false; \ +}) + +#endif /* _LINUX_RH_KABI_H */ diff --git a/include/linux/rmi.h b/include/linux/rmi.h index ab7eea01ab42..fff7c5f737fc 100644 --- a/include/linux/rmi.h +++ b/include/linux/rmi.h @@ -364,6 +364,7 @@ struct rmi_driver_data { struct rmi4_attn_data attn_data; DECLARE_KFIFO(attn_fifo, struct rmi4_attn_data, 16); + struct work_struct attn_work; }; int rmi_register_transport_device(struct rmi_transport_dev *xport); diff --git a/include/linux/security.h b/include/linux/security.h index 6d72772182c8..fe3b072665fb 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -471,6 +471,7 @@ int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen); int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen); int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen); int security_locked_down(enum lockdown_reason what); +int security_lock_kernel_down(const char *where, enum lockdown_reason level); #else /* CONFIG_SECURITY */ static inline int call_blocking_lsm_notifier(enum lsm_event event, void *data) @@ -1347,6 +1348,10 @@ static inline int security_locked_down(enum lockdown_reason what) { return 0; } +static inline int security_lock_kernel_down(const char *where, enum lockdown_reason level) +{ + return 0; +} #endif /* CONFIG_SECURITY */ #if defined(CONFIG_SECURITY) && defined(CONFIG_WATCH_QUEUE) diff --git a/init/Kconfig b/init/Kconfig index e9119bf54b1f..e3b57b4898fe 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1645,7 +1645,7 @@ config AIO this option saves about 7k. config IO_URING - bool "Enable IO uring support" if EXPERT + bool "Enable IO uring support" select IO_WQ default y help diff --git a/kernel/Makefile b/kernel/Makefile index 56f4ee97f328..2dfcaac71418 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -12,6 +12,7 @@ obj-y = fork.o exec_domain.o panic.o \ notifier.o ksysfs.o cred.o reboot.o \ async.o range.o smpboot.o ucount.o regset.o +obj-$(CONFIG_RHEL_DIFFERENCES) += rh_messages.o obj-$(CONFIG_USERMODE_DRIVER) += usermode_driver.o obj-$(CONFIG_MODULES) += kmod.o obj-$(CONFIG_MULTIUSER) += groups.o diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index ca70fe6fba38..b723094f3284 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -51,6 +52,23 @@ static DEFINE_SPINLOCK(map_idr_lock); static DEFINE_IDR(link_idr); static DEFINE_SPINLOCK(link_idr_lock); +static int __init unprivileged_bpf_setup(char *str) +{ + unsigned long disabled; + if (!kstrtoul(str, 0, &disabled)) + sysctl_unprivileged_bpf_disabled = !!disabled; + + if (!sysctl_unprivileged_bpf_disabled) { + pr_warn("Unprivileged BPF has been enabled " + "(unprivileged_bpf_disabled=0 has been supplied " + "in boot parameters), tainting the kernel"); + add_taint(TAINT_UNPRIVILEGED_BPF, LOCKDEP_STILL_OK); + } + + return 1; +} +__setup("unprivileged_bpf_disabled=", unprivileged_bpf_setup); + int sysctl_unprivileged_bpf_disabled __read_mostly = IS_BUILTIN(CONFIG_BPF_UNPRIV_DEFAULT_OFF) ? 2 : 0; diff --git a/kernel/module.c b/kernel/module.c index 46a5c2ed1928..92c2306651ce 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -743,6 +743,7 @@ static struct module_attribute modinfo_##field = { \ MODINFO_ATTR(version); MODINFO_ATTR(srcversion); +MODINFO_ATTR(rhelversion); static char last_unloaded_module[MODULE_NAME_LEN+1]; @@ -1205,6 +1206,7 @@ static struct module_attribute *modinfo_attrs[] = { &module_uevent, &modinfo_version, &modinfo_srcversion, + &modinfo_rhelversion, &modinfo_initstate, &modinfo_coresize, &modinfo_initsize, diff --git a/kernel/module_signing.c b/kernel/module_signing.c index 8723ae70ea1f..fb2d773498c2 100644 --- a/kernel/module_signing.c +++ b/kernel/module_signing.c @@ -38,8 +38,15 @@ int mod_verify_sig(const void *mod, struct load_info *info) modlen -= sig_len + sizeof(ms); info->len = modlen; - return verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len, + ret = verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len, VERIFY_USE_SECONDARY_KEYRING, VERIFYING_MODULE_SIGNATURE, NULL, NULL); + if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) { + ret = verify_pkcs7_signature(mod, modlen, mod + modlen, sig_len, + VERIFY_USE_PLATFORM_KEYRING, + VERIFYING_MODULE_SIGNATURE, + NULL, NULL); + } + return ret; } diff --git a/kernel/panic.c b/kernel/panic.c index 55b50e052ec3..8b7955251793 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -385,6 +385,20 @@ const struct taint_flag taint_flags[TAINT_FLAGS_COUNT] = { [ TAINT_LIVEPATCH ] = { 'K', ' ', true }, [ TAINT_AUX ] = { 'X', ' ', true }, [ TAINT_RANDSTRUCT ] = { 'T', ' ', true }, + [ TAINT_18 ] = { '?', '-', false }, + [ TAINT_19 ] = { '?', '-', false }, + [ TAINT_20 ] = { '?', '-', false }, + [ TAINT_21 ] = { '?', '-', false }, + [ TAINT_22 ] = { '?', '-', false }, + [ TAINT_23 ] = { '?', '-', false }, + [ TAINT_24 ] = { '?', '-', false }, + [ TAINT_25 ] = { '?', '-', false }, + [ TAINT_26 ] = { '?', '-', false }, + [ TAINT_SUPPORT_REMOVED ] = { 'h', ' ', false }, + [ TAINT_RESERVED28 ] = { '?', '-', false }, + [ TAINT_RESERVED29 ] = { '?', '-', false }, + [ TAINT_RESERVED30 ] = { '?', '-', false }, + [ TAINT_UNPRIVILEGED_BPF ] = { 'u', ' ', false }, }; /** diff --git a/kernel/rh_messages.c b/kernel/rh_messages.c new file mode 100644 index 000000000000..345a979cd0e4 --- /dev/null +++ b/kernel/rh_messages.c @@ -0,0 +1,179 @@ +#include +#include + +#define DEV_DESC_LEN 256 +/* + * The following functions are used by Red Hat to indicate to users that + * hardware and drivers are unsupported, or have limited support in RHEL major + * and minor releases. These functions output loud warning messages to the end + * user and should be USED WITH CAUTION. + * + * Any use of these functions _MUST_ be documented in the RHEL Release Notes, + * and have approval of management. + * + * Generally, the process of disabling a driver or device in RHEL requires the + * driver or device to be marked as 'deprecated' in all existing releases, and + * then either 'unmaintained' or 'disabled' in a future release. + * + * In general, deprecated and unmaintained drivers continue to receive security + * related fixes until they are disabled. + */ + +/** + * mark_hardware_unmaintained() - Mark hardware as unmaintained. + * @driver_name: driver name + * @fmt: format for device description + * @...: args for device description + * + * Called to notify users that the device will no longer be tested on a routine + * basis and driver code associated with this device is no longer being updated. + * Red Hat may fix security-related and critical issues. Support for this device + * will be disabled in a future major release and users deploying this device + * should plan to replace the device in production systems. + * + * This function should be used when the driver's usage can be tied to a + * specific hardware device. For example, a network device driver loading on a + * specific device that is no longer maintained by the manufacturer. + */ +void mark_hardware_unmaintained(const char *driver_name, char *fmt, ...) +{ + char device_description[DEV_DESC_LEN]; + va_list args; + + va_start(args, fmt); + vsnprintf(device_description, DEV_DESC_LEN, fmt, args); + pr_crit("Warning: Unmaintained hardware is detected: %s:%s\n", driver_name, + device_description); + va_end(args); +} +EXPORT_SYMBOL(mark_hardware_unmaintained); + +/** + * mark_driver_unmaintained() - Mark a driver as unmaintained. + * @driver_name: driver name + * + * Called to notify users that a driver will no longer be tested on a routine + * basis and the driver code is no longer being updated. Red Hat may fix + * security-related and critical issues. Support for this driver will be + * disabled in a future major release, and users should replace any affected + * devices in production systems. + * + * This function should be used when a driver's usage cannot be tied to a + * specific hardware device. For example, a network bonding driver or a higher + * level storage layer driver that is no longer maintained upstream. + */ +void mark_driver_unmaintained(const char *driver_name) +{ + pr_crit("Warning: Unmaintained driver is detected: %s\n", driver_name); +} +EXPORT_SYMBOL(mark_driver_unmaintained); + +/** + * mark_hardware_deprecated() - Mark hardware as deprecated. + * @driver_name: driver name + * @fmt: format for device description + * @...: args for device description + * + * Called to notify users that support for the device is planned to be + * unmaintained in a future major release, and will eventually be disabled in a + * future major release. This device should not be used in new production + * environments and users should replace the device in production systems. + * + * This function should be used when the driver's usage can be tied to a + * specific hardware device. For example, a network device driver loading on a + * specific device that is no longer maintained by the manufacturer. + */ +void mark_hardware_deprecated(const char *driver_name, char *fmt, ...) +{ + char device_description[DEV_DESC_LEN]; + va_list args; + + va_start(args, fmt); + vsnprintf(device_description, DEV_DESC_LEN, fmt, args); + pr_crit("Warning: Deprecated Hardware is detected: %s:%s will not be maintained in a future major release and may be disabled\n", + driver_name, device_description); + va_end(args); +} +EXPORT_SYMBOL(mark_hardware_deprecated); + +/** + * mark_driver_deprecated() - Mark a driver as deprecated. + * @driver_name: driver name + * + * Called to notify users that support for this driver is planned to be + * unmaintained in a future major release, and will eventually be disabled in a + * future major release. This driver should not be used in new production + * environments and users should replace any affected devices in production + * systems. + * + * This function should be used when a driver's usage cannot be tied to a + * specific hardware device. For example, a network bonding driver or a higher + * level storage layer driver that is no longer maintained upstream. + */ +void mark_driver_deprecated(const char *driver_name) +{ + pr_crit("Warning: Deprecated Driver is detected: %s will not be maintained in a future major release and may be disabled\n", + driver_name); +} +EXPORT_SYMBOL(mark_driver_deprecated); + +/** + * mark_hardware_disabled() - Mark a driver as removed. + * @driver_name: driver name + * @fmt: format for device description + * @...: args for device description + * + * Called to notify users that a device's support has been completely disabled + * and no future support updates will occur. This device cannot be used in new + * production environments, and users must replace the device in production + * systems. + * + * This function should be used when the driver's usage can be tied to a + * specific hardware device. For example, a network device driver loading on a + * specific device that is no longer maintained by the manufacturer. + */ +void mark_hardware_disabled(const char *driver_name, char *fmt, ...) +{ + char device_description[DEV_DESC_LEN]; + va_list args; + + va_start(args, fmt); + vsnprintf(device_description, DEV_DESC_LEN, fmt, args); + pr_crit("Warning: Disabled Hardware is detected: %s:%s is no longer enabled in this release.\n", + driver_name, device_description); + va_end(args); +} +EXPORT_SYMBOL(mark_hardware_disabled); + +/** + * mark_tech_preview() - Mark driver or kernel subsystem as 'Tech Preview' + * @msg: Driver or kernel subsystem name + * + * Called to minimize the support status of a new driver. This does TAINT the + * kernel. Calling this function indicates that the driver or subsystem has + * had limited testing and is not marked for full support within this RHEL + * minor release. The next RHEL minor release may contain full support for + * this driver. Red Hat does not guarantee that bugs reported against this + * driver or subsystem will be resolved. + */ +void mark_tech_preview(const char *msg, struct module *mod) +{ + const char *str = NULL; + + if (msg) + str = msg; +#ifdef CONFIG_MODULES + else if (mod && mod->name) + str = mod->name; +#endif + + pr_warn("TECH PREVIEW: %s may not be fully supported.\n" + "Please review provided documentation for limitations.\n", + (str ? str : "kernel")); + add_taint(TAINT_AUX, LOCKDEP_STILL_OK); +#ifdef CONFIG_MODULES + if (mod) + mod->taints |= (1U << TAINT_AUX); +#endif +} +EXPORT_SYMBOL(mark_tech_preview); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 5ae443b2882e..4b929f4cb77a 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -195,6 +195,11 @@ static int bpf_unpriv_handler(struct ctl_table *table, int write, if (write && !ret) { if (locked_state && unpriv_enable != 1) return -EPERM; + if (!unpriv_enable) { + pr_warn("Unprivileged BPF has been enabled, " + "tainting the kernel"); + add_taint(TAINT_UNPRIVILEGED_BPF, LOCKDEP_STILL_OK); + } *(int *)table->data = unpriv_enable; } return ret; diff --git a/mm/cma.c b/mm/cma.c index bc9ca8f3c487..9fa9a485eb3a 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -125,6 +125,12 @@ static void __init cma_activate_area(struct cma *cma) spin_lock_init(&cma->mem_head_lock); #endif +#ifdef CONFIG_RHEL_DIFFERENCES + /* s390x and ppc64 has been using CMA already in RHEL 8 as default. */ + if (!IS_ENABLED(CONFIG_S390) && !IS_ENABLED(CONFIG_PPC64)) + mark_tech_preview("CMA", NULL); +#endif /* CONFIG_RHEL_DIFFERENCES */ + return; not_in_zone: @@ -437,6 +443,10 @@ struct page *cma_alloc(struct cma *cma, unsigned long count, if (!cma || !cma->count || !cma->bitmap) goto out; +#ifdef CONFIG_RHEL_DIFFERENCES + pr_info_once("Initial CMA usage detected\n"); +#endif /* CONFIG_RHEL_DIFFERENCES */ + pr_debug("%s(cma %p, count %lu, align %d)\n", __func__, (void *)cma, count, align); diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 6bfa33217914..92d936f34b27 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -21,6 +21,7 @@ #include #include "modpost.h" #include "../../include/linux/license.h" +#include "../../include/generated/uapi/linux/version.h" /* Are we using CONFIG_MODVERSIONS? */ static int modversions = 0; @@ -2366,6 +2367,12 @@ static void write_buf(struct buffer *b, const char *fname) } } +static void add_rhelversion(struct buffer *b, struct module *mod) +{ + buf_printf(b, "MODULE_INFO(rhelversion, \"%d.%d\");\n", RHEL_MAJOR, + RHEL_MINOR); +} + static void write_if_changed(struct buffer *b, const char *fname) { char *tmp; @@ -2595,6 +2602,7 @@ int main(int argc, char **argv) add_depends(&buf, mod); add_moddevtable(&buf, mod); add_srcversion(&buf, mod); + add_rhelversion(&buf, mod); sprintf(fname, "%s.mod.c", mod->name); write_if_changed(&buf, fname); diff --git a/scripts/tags.sh b/scripts/tags.sh index 16d475b3e203..4e333f14b84e 100755 --- a/scripts/tags.sh +++ b/scripts/tags.sh @@ -16,6 +16,8 @@ fi ignore="$(echo "$RCS_FIND_IGNORE" | sed 's|\\||g' )" # tags and cscope files should also ignore MODVERSION *.mod.c files ignore="$ignore ( -name *.mod.c ) -prune -o" +# RHEL tags and cscope should also ignore redhat/rpm +ignore="$ignore ( -path redhat/rpm ) -prune -o" # Use make KBUILD_ABS_SRCTREE=1 {tags|cscope} # to force full paths for a non-O= build diff --git a/security/integrity/platform_certs/load_uefi.c b/security/integrity/platform_certs/load_uefi.c index 08b6d12f99b4..61b596236d53 100644 --- a/security/integrity/platform_certs/load_uefi.c +++ b/security/integrity/platform_certs/load_uefi.c @@ -47,7 +47,8 @@ static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid, return NULL; if (*status != EFI_BUFFER_TOO_SMALL) { - pr_err("Couldn't get size: 0x%lx\n", *status); + pr_err("Couldn't get size: %s (0x%lx)\n", + efi_status_to_str(*status), *status); return NULL; } @@ -58,7 +59,8 @@ static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid, *status = efi.get_variable(name, guid, NULL, &lsize, db); if (*status != EFI_SUCCESS) { kfree(db); - pr_err("Error reading db var: 0x%lx\n", *status); + pr_err("Error reading db var: %s (0x%lx)\n", + efi_status_to_str(*status), *status); return NULL; } diff --git a/security/lockdown/Kconfig b/security/lockdown/Kconfig index e84ddf484010..d0501353a4b9 100644 --- a/security/lockdown/Kconfig +++ b/security/lockdown/Kconfig @@ -16,6 +16,19 @@ config SECURITY_LOCKDOWN_LSM_EARLY subsystem is fully initialised. If enabled, lockdown will unconditionally be called before any other LSMs. +config LOCK_DOWN_IN_EFI_SECURE_BOOT + bool "Lock down the kernel in EFI Secure Boot mode" + default n + depends on EFI && SECURITY_LOCKDOWN_LSM_EARLY + help + UEFI Secure Boot provides a mechanism for ensuring that the firmware + will only load signed bootloaders and kernels. Secure boot mode may + be determined from EFI variables provided by the system firmware if + not indicated by the boot parameters. + + Enabling this option results in kernel lockdown being triggered if + EFI Secure Boot is set. + choice prompt "Kernel default lockdown mode" default LOCK_DOWN_KERNEL_FORCE_NONE diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c index 87cbdc64d272..18555cf18da7 100644 --- a/security/lockdown/lockdown.c +++ b/security/lockdown/lockdown.c @@ -73,6 +73,7 @@ static int lockdown_is_locked_down(enum lockdown_reason what) static struct security_hook_list lockdown_hooks[] __lsm_ro_after_init = { LSM_HOOK_INIT(locked_down, lockdown_is_locked_down), + LSM_HOOK_INIT(lock_kernel_down, lock_kernel_down), }; static int __init lockdown_lsm_init(void) diff --git a/security/security.c b/security/security.c index 22261d79f333..20336365f864 100644 --- a/security/security.c +++ b/security/security.c @@ -2603,6 +2603,12 @@ int security_locked_down(enum lockdown_reason what) } EXPORT_SYMBOL(security_locked_down); +int security_lock_kernel_down(const char *where, enum lockdown_reason level) +{ + return call_int_hook(lock_kernel_down, 0, where, level); +} +EXPORT_SYMBOL(security_lock_kernel_down); + #ifdef CONFIG_PERF_EVENTS int security_perf_event_open(struct perf_event_attr *attr, int type) {