kernel version: 5.10-rt
BUG: sleeping function called from invalid context at
kernel/locking/rtmutex.c:969
[ 57.899678] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid:
281, name: kworker/3:3
[ 57.899679] 5 locks held by kworker/3:3/281:
[ 57.899681] #0: ffff89c4c00ca970
((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1cf/0x6d0
[ 57.899691] #1: ffffa433c1f53e60
((work_completion)(&engine->retire_work)){+.+.}-{0:0}, at:
process_one_work+0x1cf/0x6d0
[ 57.899696] #2: ffff89c4ccb0a0a8 (kernel_context){+.+.}-{0:0}, at:
engine_retire+0x62/0x110 [i915]
[ 57.899795] #3: ffff89c4cf682300 (wakeref.mutex#3){+.+.}-{0:0}, at:
__intel_wakeref_put_last+0x20/0x60 [i915]
[ 57.899866] #4: ffff89c4ccb08398 (&b->irq_lock){+.+.}-{0:0}, at:
intel_breadcrumbs_disarm_irq+0x20/0xd0 [i915]
[ 57.899937] irq event stamp: 2126
[ 57.899938] hardirqs last enabled at (2125): [<ffffffffbb134739>]
cancel_delayed_work+0xa9/0xc0
[ 57.899942] hardirqs last disabled at (2126): [<ffffffffc0507fe6>]
__intel_breadcrumbs_park+0x76/0x80 [i915]
[ 57.900008] softirqs last enabled at (0): [<ffffffffbb1099ce>]
copy_process+0x63e/0x1630
[ 57.900012] softirqs last disabled at (0): [<0000000000000000>] 0x0
[ 57.900015] CPU: 3 PID: 281 Comm: kworker/3:3 Not tainted
5.10.27-rt34-yocto-preempt-rt #1
[ 57.900017] Hardware name: Intel(R) Client Systems
NUC7i5DNKE/NUC7i5DNB, BIOS DNKBLi5v.86A.0064.2019.0523.1933 05/23/2019
[ 57.900019] Workqueue: events engine_retire [i915]
[ 57.900091] Call Trace:
[ 57.900094] show_stack+0x52/0x58
[ 57.900100] dump_stack+0x7d/0x9f
[ 57.900108] ___might_sleep.cold+0xe3/0xf4
[ 57.900119] rt_spin_lock+0x3f/0xc0
[ 57.900122] ? intel_breadcrumbs_disarm_irq+0x20/0xd0 [i915]
[ 57.900192] intel_breadcrumbs_disarm_irq+0x20/0xd0 [i915]
[ 57.900264] signal_irq_work+0x241/0x660 [i915]
[ 57.900334] ? __this_cpu_preempt_check+0x13/0x20
[ 57.900339] ? lockdep_hardirqs_off+0x106/0x120
[ 57.900353] __intel_breadcrumbs_park+0x3f/0x80 [i915]
[ 57.900420] __engine_park+0xbd/0xe0 [i915]
[ 57.900490] ____intel_wakeref_put_last+0x22/0x60 [i915]
[ 57.900557] __intel_wakeref_put_last+0x50/0x60 [i915]
[ 57.900623] intel_context_exit_engine+0x5f/0x70 [i915]
[ 57.900694] i915_request_retire+0x139/0x2d0 [i915]
[ 57.900783] engine_retire+0xb0/0x110 [i915]
[ 57.900862] process_one_work+0x26d/0x6d0
[ 57.900886] worker_thread+0x53/0x330
[ 57.900897] kthread+0x1b0/0x1d0
[ 57.900901] ? process_one_work+0x6d0/0x6d0
[ 57.900903] ? __kthread_parkme+0xc0/0xc0
[ 57.900912] ret_from_fork+0x22/0x30
Follow patch cause this bug warning:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/i915/gt/intel_breadcrumbs.c?h=v5.12-rc7&id=9d5612ca165a58aacc160465532e7998b9aab270
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