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author | Justin M. Forbes <jforbes@fedoraproject.org> | 2020-02-20 09:37:52 -0600 |
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committer | Justin M. Forbes <jforbes@fedoraproject.org> | 2020-02-20 09:37:52 -0600 |
commit | ddfd56365fc9edeff1bf2e76931f1247bbdc795a (patch) | |
tree | 4719adaddfbb3f17af1c1003fa19bd8c8595cf00 /0001-drm-i915-Serialise-i915_active_acquire-with-__active.patch | |
parent | 742215ba5157f9c0cf261ea5bd3b4e728e3e8955 (diff) | |
download | kernel-ddfd56365fc9edeff1bf2e76931f1247bbdc795a.tar.gz kernel-ddfd56365fc9edeff1bf2e76931f1247bbdc795a.tar.xz kernel-ddfd56365fc9edeff1bf2e76931f1247bbdc795a.zip |
Add aarch64 heap fix and i915 fix from upstream
Diffstat (limited to '0001-drm-i915-Serialise-i915_active_acquire-with-__active.patch')
-rw-r--r-- | 0001-drm-i915-Serialise-i915_active_acquire-with-__active.patch | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/0001-drm-i915-Serialise-i915_active_acquire-with-__active.patch b/0001-drm-i915-Serialise-i915_active_acquire-with-__active.patch new file mode 100644 index 000000000..7270eda24 --- /dev/null +++ b/0001-drm-i915-Serialise-i915_active_acquire-with-__active.patch @@ -0,0 +1,79 @@ +From bbca083de291a03ffe1a1eb0832a0d74f8b64898 Mon Sep 17 00:00:00 2001 +From: Chris Wilson <chris@chris-wilson.co.uk> +Date: Thu, 5 Dec 2019 18:33:32 +0000 +Subject: [PATCH] drm/i915: Serialise i915_active_acquire() with + __active_retire() + +As __active_retire() does it's final atomic_dec() under the +ref->tree_lock spinlock, in order to prevent ourselves from reusing the +ref->cache and ref->tree as they are being destroyed, we need to +serialise with the retirement during i915_active_acquire(). + +[ +0.000005] kernel BUG at drivers/gpu/drm/i915/i915_active.c:157! +[ +0.000011] invalid opcode: 0000 [#1] SMP +[ +0.000004] CPU: 7 PID: 188 Comm: kworker/u16:4 Not tainted 5.4.0-rc8-03070-gac5e57322614 #89 +[ +0.000002] Hardware name: Razer Razer Blade Stealth 13 Late 2019/LY320, BIOS 1.02 09/10/2019 +[ +0.000082] Workqueue: events_unbound active_work [i915] +[ +0.000059] RIP: 0010:__active_retire+0x115/0x120 [i915] +[ +0.000003] Code: 75 28 48 8b 3d 8c 6e 1a 00 48 89 ee e8 e4 5f a5 c0 48 8b 44 24 10 65 48 33 04 25 28 00 00 00 75 0f 48 83 c4 18 5b 5d 41 5c c3 <0f> 0b 0f 0b 0f 0b e8 a0 90 87 c0 0f 1f 44 00 00 48 8b 3d 54 6e 1a +[ +0.000002] RSP: 0018:ffffb833003f7e48 EFLAGS: 00010286 +[ +0.000003] RAX: ffff8d6e8d726d00 RBX: ffff8d6f9db4e840 RCX: 0000000000000000 +[ +0.000001] RDX: ffffffff82605930 RSI: ffff8d6f9adc4908 RDI: ffff8d6e96cefe28 +[ +0.000002] RBP: ffff8d6e96cefe00 R08: 0000000000000000 R09: ffff8d6f9ffe9a50 +[ +0.000002] R10: 0000000000000048 R11: 0000000000000018 R12: ffff8d6f9adc4930 +[ +0.000001] R13: ffff8d6f9e04fb00 R14: 0000000000000000 R15: ffff8d6f9adc4988 +[ +0.000002] FS: 0000000000000000(0000) GS:ffff8d6f9ffc0000(0000) knlGS:0000000000000000 +[ +0.000002] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 +[ +0.000002] CR2: 000055eb5a34cf10 CR3: 000000018d609002 CR4: 0000000000760ee0 +[ +0.000002] PKRU: 55555554 +[ +0.000001] Call Trace: +[ +0.000010] process_one_work+0x1aa/0x350 +[ +0.000004] worker_thread+0x4d/0x3a0 +[ +0.000004] kthread+0xfb/0x130 +[ +0.000004] ? process_one_work+0x350/0x350 +[ +0.000003] ? kthread_park+0x90/0x90 +[ +0.000005] ret_from_fork+0x1f/0x40 + +Reported-by: Kenneth Graunke <kenneth@whitecape.org> +Fixes: c9ad602feabe ("drm/i915: Split i915_active.mutex into an irq-safe spinlock for the rbtree") +Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> +Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> +Cc: Kenneth Graunke <kenneth@whitecape.org> +Cc: Matthew Auld <matthew.auld@intel.com> +Tested-by: Kenneth Graunke <kenneth@whitecape.org> +Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> +Link: https://patchwork.freedesktop.org/patch/msgid/20191205183332.801237-1-chris@chris-wilson.co.uk +--- + drivers/gpu/drm/i915/i915_active.c | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c +index e3fcec4834c2..3d0edde84705 100644 +--- a/drivers/gpu/drm/i915/i915_active.c ++++ b/drivers/gpu/drm/i915/i915_active.c +@@ -91,10 +91,9 @@ static void debug_active_init(struct i915_active *ref) + + static void debug_active_activate(struct i915_active *ref) + { +- spin_lock_irq(&ref->tree_lock); ++ lockdep_assert_held(&ref->tree_lock); + if (!atomic_read(&ref->count)) /* before the first inc */ + debug_object_activate(ref, &active_debug_desc); +- spin_unlock_irq(&ref->tree_lock); + } + + static void debug_active_deactivate(struct i915_active *ref) +@@ -419,8 +418,10 @@ int i915_active_acquire(struct i915_active *ref) + if (!atomic_read(&ref->count) && ref->active) + err = ref->active(ref); + if (!err) { ++ spin_lock_irq(&ref->tree_lock); /* vs __active_retire() */ + debug_active_activate(ref); + atomic_inc(&ref->count); ++ spin_unlock_irq(&ref->tree_lock); + } + + mutex_unlock(&ref->mutex); +-- +2.24.1 + |