igt@gem_barrier_race@remote-request@rcs0 - dmesg-warn - WARNING: suspicious RCU usage
<4> [296.199935]
<4> [296.200007] =============================
<4> [296.200009] WARNING: suspicious RCU usage
<4> [296.200011] 6.2.0-CI_DRM_12768-gd9a0aa492e36+ #1 Tainted: G U
<4> [296.200014] -----------------------------
<4> [296.200016] drivers/gpu/drm/i915/gt/gen8_engine_cs.c:345 suspicious rcu_dereference_protected() usage!
<4> [296.200019]
other info that might help us debug this:
<4> [296.200021]
rcu_scheduler_active = 2, debug_locks = 1
<4> [296.200023] 3 locks held by kworker/u12:6/90:
<4> [296.200026] #0: ffff888106b13c98 (&rq->lock){-.-.}-{2:2}, at: signal_irq_work+0x2b3/0x6b0 [i915]
<4> [296.200175] #1: ffffffff82737fe0 (rcu_read_lock){....}-{1:2}, at: submit_notify+0x64/0x220 [i915]
<4> [296.200312] #2: ffff88813561d620 (&sched_engine->lock/2){-.-.}-{2:2}, at: guc_submit_request+0x34/0x2c0 [i915]
<4> [296.200440]
stack backtrace:
<4> [296.200443] CPU: 5 PID: 90 Comm: kworker/u12:6 Tainted: G U 6.2.0-CI_DRM_12768-gd9a0aa492e36+ #1
<4> [296.200446] Hardware name: Gigabyte Technology Co., Ltd. GB-Z390 Garuda/GB-Z390 Garuda-CF, BIOS IG1c 11/19/2019
<4> [296.200449] Workqueue: 0x0 (writeback)
<4> [296.200455] Call Trace:
<4> [296.200458] <IRQ>
<4> [296.200461] dump_stack_lvl+0x5b/0x85
<4> [296.200467] hwsp_offset+0x64/0x70 [i915]
<4> [296.200547] gen12_emit_fini_breadcrumb_rcs+0x79/0x260 [i915]
<4> [296.200627] __i915_request_submit+0x16a/0x320 [i915]
<4> [296.200742] guc_submit_request+0x1bf/0x2c0 [i915]
<4> [296.200865] submit_notify+0xab/0x220 [i915]
<4> [296.200980] __i915_sw_fence_complete+0x7e/0x260 [i915]