Hey, Andrey.
while investigating some memory management problems I've got the logdep splat below.
Looks like something is wrong with drm_sched_entity_kill_jobs_cb(), can you investigate?
Thanks, Christian.
[11176.741052] ============================================ [11176.741056] WARNING: possible recursive locking detected [11176.741060] 5.15.0-rc1-00031-g9d546d600800 #171 Not tainted [11176.741066] -------------------------------------------- [11176.741070] swapper/12/0 is trying to acquire lock: [11176.741074] ffff9c337ed175a8 (&fence->lock){-.-.}-{3:3}, at: dma_fence_signal+0x28/0x80 [11176.741088] but task is already holding lock: [11176.741092] ffff9c337ed172a8 (&fence->lock){-.-.}-{3:3}, at: dma_fence_signal+0x28/0x80 [11176.741100] other info that might help us debug this: [11176.741104] Possible unsafe locking scenario:
[11176.741108] CPU0 [11176.741110] ---- [11176.741113] lock(&fence->lock); [11176.741118] lock(&fence->lock); [11176.741122] *** DEADLOCK ***
[11176.741125] May be due to missing lock nesting notation
[11176.741128] 2 locks held by swapper/12/0: [11176.741133] #0: ffff9c339c30f768 (&ring->fence_drv.lock){-.-.}-{3:3}, at: dma_fence_signal+0x28/0x80 [11176.741142] #1: ffff9c337ed172a8 (&fence->lock){-.-.}-{3:3}, at: dma_fence_signal+0x28/0x80 [11176.741151] stack backtrace: [11176.741155] CPU: 12 PID: 0 Comm: swapper/12 Not tainted 5.15.0-rc1-00031-g9d546d600800 #171 [11176.741160] Hardware name: System manufacturer System Product Name/PRIME X399-A, BIOS 0808 10/12/2018 [11176.741165] Call Trace: [11176.741169] <IRQ> [11176.741173] dump_stack_lvl+0x5b/0x74 [11176.741181] dump_stack+0x10/0x12 [11176.741186] __lock_acquire.cold+0x208/0x2df [11176.741197] lock_acquire+0xc6/0x2d0 [11176.741204] ? dma_fence_signal+0x28/0x80 [11176.741212] _raw_spin_lock_irqsave+0x4d/0x70 [11176.741219] ? dma_fence_signal+0x28/0x80 [11176.741225] dma_fence_signal+0x28/0x80 [11176.741230] drm_sched_fence_finished+0x12/0x20 [gpu_sched] [11176.741240] drm_sched_entity_kill_jobs_cb+0x1c/0x50 [gpu_sched] [11176.741248] dma_fence_signal_timestamp_locked+0xac/0x1a0 [11176.741254] dma_fence_signal+0x3b/0x80 [11176.741260] drm_sched_fence_finished+0x12/0x20 [gpu_sched] [11176.741268] drm_sched_job_done.isra.0+0x7f/0x1a0 [gpu_sched] [11176.741277] drm_sched_job_done_cb+0x12/0x20 [gpu_sched] [11176.741284] dma_fence_signal_timestamp_locked+0xac/0x1a0 [11176.741290] dma_fence_signal+0x3b/0x80 [11176.741296] amdgpu_fence_process+0xd1/0x140 [amdgpu] [11176.741504] sdma_v4_0_process_trap_irq+0x8c/0xb0 [amdgpu] [11176.741731] amdgpu_irq_dispatch+0xce/0x250 [amdgpu] [11176.741954] amdgpu_ih_process+0x81/0x100 [amdgpu] [11176.742174] amdgpu_irq_handler+0x26/0xa0 [amdgpu] [11176.742393] __handle_irq_event_percpu+0x4f/0x2c0 [11176.742402] handle_irq_event_percpu+0x33/0x80 [11176.742408] handle_irq_event+0x39/0x60 [11176.742414] handle_edge_irq+0x93/0x1d0 [11176.742419] __common_interrupt+0x50/0xe0 [11176.742426] common_interrupt+0x80/0x90 [11176.742431] </IRQ> [11176.742436] asm_common_interrupt+0x1e/0x40 [11176.742442] RIP: 0010:cpuidle_enter_state+0xff/0x470 [11176.742449] Code: 0f a3 05 04 54 24 01 0f 82 70 02 00 00 31 ff e8 37 5d 6f ff 80 7d d7 00 0f 85 e9 01 00 00 e8 58 a2 7f ff fb 66 0f 1f 44 00 00 <45> 85 ff 0f 88 01 01 00 00 49 63 c7 4c 2b 75 c8 48 8d 14 40 48 8d [11176.742455] RSP: 0018:ffffb6970021fe48 EFLAGS: 00000202 [11176.742461] RAX: 000000000059be25 RBX: 0000000000000002 RCX: 0000000000000000 [11176.742465] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9efeed78 [11176.742470] RBP: ffffb6970021fe80 R08: 0000000000000001 R09: 0000000000000001 [11176.742473] R10: 0000000000000001 R11: 0000000000000001 R12: ffff9c3350b0e800 [11176.742477] R13: ffffffffa00e9680 R14: 00000a2a49ada060 R15: 0000000000000002 [11176.742483] ? cpuidle_enter_state+0xf8/0x470 [11176.742489] ? cpuidle_enter_state+0xf8/0x470 [11176.742495] cpuidle_enter+0x2e/0x40 [11176.742500] call_cpuidle+0x23/0x40 [11176.742506] do_idle+0x201/0x280 [11176.742512] cpu_startup_entry+0x20/0x30 [11176.742517] start_secondary+0x11f/0x160 [11176.742523] secondary_startup_64_no_verify+0xb0/0xbb