igt@i915_selftest@live@migrate - dmesg-warn - WARNING: held lock freed!
<4> [319.223260] WARNING: held lock freed!
<4> [319.223264] 5.15.0-CI-Patchwork_21521+ #1 Tainted: G U
<4> [319.223269] -------------------------
<4> [319.223271] igt-1/5531 is freeing memory ffff888019eb2740-ffff888019eb2f3f, with a lock still held there!
<4> [319.223278] ffff888019eb28e8 (reservation_ww_class_mutex){+.+.}-{3:3}, at: i915_gem_ww_ctx_backoff+0xcb/0x190 [i915]
<4> [319.223718] 3 locks held by igt-1/5531:
<4> [319.223723] #0: ffffc90000837e90 (reservation_ww_class_acquire){+.+.}-{0:0}, at: copy+0xeb/0x880 [i915]
<4> [319.224060] #1: ffff888019eb28e8 (reservation_ww_class_mutex){+.+.}-{3:3}, at: i915_gem_ww_ctx_backoff+0xcb/0x190 [i915]
<4> [319.224416] #2: ffffffff82737520 (rcu_callback){....}-{0:0}, at: rcu_core+0x2ec/0x920
<4> [319.224435]
stack backtrace:
<4> [319.224439] CPU: 0 PID: 5531 Comm: igt-1 Tainted: G U 5.15.0-CI-Patchwork_21521+ #1
<4> [319.224445] Hardware name: /NUC5CPYB, BIOS PYBSWCEL.86A.0079.2020.0420.1316 04/20/2020
<4> [319.224450] Call Trace:
<4> [319.224455] <IRQ>
<4> [319.224460] dump_stack_lvl+0x56/0x7b
<4> [319.224470] debug_check_no_locks_freed.cold.69+0x78/0x7d
<4> [319.224480] ? __i915_gem_free_object_rcu+0x1b/0x40 [i915]
<4> [319.224826] kmem_cache_free+0x8c/0x3c0
<4> [319.224834] ? rcu_core+0x2ec/0x920
<4> [319.224843] __i915_gem_free_object_rcu+0x1b/0x40 [i915]
<4> [319.225185] rcu_core+0x343/0x920
<4> [319.225193] ? rcu_core+0x2ec/0x920
<4> [319.225202] __do_softirq+0xdf/0x493
<4> [319.225212] irq_exit_rcu+0xa6/0xe0
<4> [319.225219] sysvec_apic_timer_interrupt+0x8a/0xb0
<4> [319.225227] </IRQ>
<4> [319.225231] asm_sysvec_apic_timer_interrupt+0x12/0x20
<4> [319.225238] RIP: 0010:finish_task_switch+0xa7/0x260
<4> [319.225248] Code: 0e 81 41 b8 01 00 00 00 31 f6 48 8d 7b 18 e8 10 94 03 00 48 89 df e8 18 ff ff ff 48 89 df e8 c0 ea a0 00 e8 db 65 0c 00 fb 58 <4d> 85 ed 74 21 65 48 8b 04 25 80 6f 01 00 4c 3b a8 90 04 00 00 0f
<4> [319.225254] RSP: 0018:ffffc90000837c18 EFLAGS: 00000206
<4> [319.225260] RAX: ffffffff810e7a6a RBX: ffff888074437580 RCX: 0000000000000006
<4> [319.225265] RDX: 0000000000000000 RSI: ffffffff8239e0bf RDI: ffffffff8233ce87
<4> [319.225269] RBP: ffffc90000837c50 R08: 0000000000000001 R09: 0000000000000001
<4> [319.225274] R10: 000000005ffeff80 R11: 000000002070390c R12: ffff88802a79d0c0
<4> [319.225278] R13: 0000000000000000 R14: ffff8880114d2880 R15: 0000000000000002
<4> [319.225285] ? finish_task_switch+0x6a/0x260
<4> [319.225294] ? finish_task_switch+0x6a/0x260
<4> [319.225302] __schedule+0x434/0xa90
<4> [319.225310] ? preempt_schedule_notrace_thunk+0x16/0x18
<4> [319.225318] ? i915_gem_ww_ctx_unlock_all+0x9d/0xf0 [i915]
<4> [319.225669] preempt_schedule_notrace+0x4e/0x80
<4> [319.225677] preempt_schedule_notrace_thunk+0x16/0x18
<4> [319.225685] lock_release+0x21c/0x2d0
<4> [319.225695] __mutex_unlock_slowpath+0x3e/0x2b0
<4> [319.225704] i915_gem_ww_ctx_unlock_all+0x9d/0xf0 [i915]
<4> [319.226054] i915_gem_ww_ctx_backoff+0x1d/0x190 [i915]
<4> [319.226404] copy+0x2f2/0x880 [i915]
<4> [319.226732] ? intel_migrate_copy+0x1f0/0x1f0 [i915]
<4> [319.227063] ? 0xffffffff81000000
<4> [319.227070] ? __thread_global_copy+0x20/0x20 [i915]
<4> [319.227397] kthread+0x13d/0x170
<4> [319.227404] ? set_kthread_struct+0x40/0x40
<4> [319.227411] ret_from_fork+0x22/0x30