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| author | Takashi Iwai <tiwai@suse.de> | 2009-05-04 16:05:23 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-05-04 16:05:23 +0200 |
| commit | 8560b9321f9050968f393ce1ec67e47c1a0bd5cf (patch) | |
| tree | 658ebb20e4fd5dee840f27103b59da367ff473b1 /arch/x86/kernel/apic/nmi.c | |
| parent | 72e31981a4e91f84c5b5e8994f5d25b1cf22b6cf (diff) | |
| parent | 6574612fbb34c63117581e68f2231ddce027e41e (diff) | |
| download | kernel-crypto-8560b9321f9050968f393ce1ec67e47c1a0bd5cf.tar.gz kernel-crypto-8560b9321f9050968f393ce1ec67e47c1a0bd5cf.tar.xz kernel-crypto-8560b9321f9050968f393ce1ec67e47c1a0bd5cf.zip | |
Merge branch 'fix/asoc' into topic/asoc
Diffstat (limited to 'arch/x86/kernel/apic/nmi.c')
| -rw-r--r-- | arch/x86/kernel/apic/nmi.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kernel/apic/nmi.c b/arch/x86/kernel/apic/nmi.c index d6bd6240715..ce4fbfa315a 100644 --- a/arch/x86/kernel/apic/nmi.c +++ b/arch/x86/kernel/apic/nmi.c @@ -138,7 +138,7 @@ int __init check_nmi_watchdog(void) if (!prev_nmi_count) goto error; - alloc_cpumask_var(&backtrace_mask, GFP_KERNEL); + alloc_cpumask_var(&backtrace_mask, GFP_KERNEL|__GFP_ZERO); printk(KERN_INFO "Testing NMI watchdog ... "); #ifdef CONFIG_SMP @@ -414,7 +414,8 @@ nmi_watchdog_tick(struct pt_regs *regs, unsigned reason) touched = 1; } - if (cpumask_test_cpu(cpu, backtrace_mask)) { + /* We can be called before check_nmi_watchdog, hence NULL check. */ + if (backtrace_mask != NULL && cpumask_test_cpu(cpu, backtrace_mask)) { static DEFINE_SPINLOCK(lock); /* Serialise the printks */ spin_lock(&lock); |