igt@i915_selftest@live@hangcheck - incomplete - rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
<3> [560.414657] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
<0> [560.416452] <...>-6155 10..... 373621094us : __i915_request_commit: 0000:03:00.0 vcs1: fence 189a0:540, current 538
<3> [560.422426] rcu: 3-...0: (0 ticks this GP) idle=e7a4/1/0x4000000000000000 softirq=37357/37357 fqs=12999
<0> [560.433625] <...>-6155 10..... 373621365us : __i915_request_commit: 0000:03:00.0 vcs1: fence 1889b:612, current 604
<4> [560.443163] (detected by 9, t=65028 jiffies, g=135761, q=5254 ncpus=12)
<6> [560.454263] Sending NMI from CPU 9 to CPUs 3:
<4> [560.454269] NMI backtrace for cpu 3
<4> [560.454270] CPU: 3 PID: 5879 Comm: i915_selftest Tainted: G U 6.1.0-rc2-CI_DRM_12313-g9d6a004b1594+ #1
<4> [560.454272] Hardware name: Intel Corporation CoffeeLake Client Platform/CoffeeLake S UDIMM RVP, BIOS CNLSFWR1.R00.X220.B00.2103302221 03/30/2021
<4> [560.454273] RIP: 0010:in_lock_functions+0x0/0x20
<4> [560.454278] Code: ff ff 8b 05 1a f0 74 01 85 c0 0f 85 93 f7 ff ff 48 c7 c6 70 dc 2a 82 48 c7 c7 6e 7b 29 82 e8 9b 33 9e 00 0f 0b e9 79 f7 ff ff <31> c0 48 81 ff 78 33 b7 81 72 0c 31 c0 48 81 ff f4 45 b7 81 0f 92
<4> [560.454279] RSP: 0018:ffffc900012a77f0 EFLAGS: 00000046
<4> [560.454281] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000006
<4> [560.454282] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000000
<4> [560.454283] RBP: ffff888100c45800 R08: 0000000000000006 R09: 00000000fffffffe
<4> [560.454284] R10: 000000002c27272f R11: 00000000ffb99d25 R12: ffff888100c45818
<4> [560.454285] R13: 0000005737fa240c R14: 0000000000000000 R15: 0000000000000006
<4> [560.454286] FS: 00007fe0a7b0ac00(0000) GS:ffff88845d580000(0000) knlGS:0000000000000000
<4> [560.454288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [560.454289] CR2: 0000557f614c21a0 CR3: 0000000110894004 CR4: 00000000003706e0
<4> [560.454290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4> [560.454291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
<4> [560.454292] Call Trace:
<4> [560.454293] <TASK>
<4> [560.454294] preempt_count_add+0x6b/0xa0
<4> [560.454298] _raw_spin_lock+0xe/0x40
<4> [560.454301] ring_buffer_empty_cpu+0x45/0xb0
<4> [560.454305] __find_next_entry+0x79/0x180
<4> [560.454310] trace_find_next_entry+0xbf/0xf0
<4> [560.454313] trace_print_lat_context+0x3b/0x2a0
<4> [560.454317] print_trace_line+0x1d8/0x4d0
<4> [560.454320] ftrace_dump.cold.110+0x5b/0xeb
<4> [560.454324] igt_flush_test+0xb0/0xd0 [i915]
<4> [560.454495] igt_reset_nop+0x175/0x1d0 [i915]
<4> [560.454656] __i915_subtests.cold.7+0x3f/0x92 [i915]
<4> [560.454848] ? __i915_live_teardown+0x30/0x30 [i915]
<4> [560.455015] ? __intel_gt_live_setup+0x30/0x30 [i915]
<4> [560.455182] intel_hangcheck_live_selftests+0xc0/0x100 [i915]
<4> [560.455341] __run_selftests.part.3+0xf7/0x158 [i915]
<4> [560.455533] i915_live_selftests.cold.5+0x1f/0x4f [i915]
<4> [560.455718] i915_pci_probe+0xd9/0x240 [i915]
<4> [560.455861] ? _raw_spin_unlock_irqrestore+0x3d/0x70
<4> [560.455865] pci_device_probe+0x95/0x110
<4> [560.455869] really_probe+0xd6/0x350
<4> [560.455872] ? pm_runtime_barrier+0x4b/0xa0
<4> [560.455876] __driver_probe_device+0x73/0x170
<4> [560.455879] driver_probe_device+0x1a/0x90
<4> [560.455882] __driver_attach+0xbc/0x190
<4> [560.455885] ? __device_attach_driver+0x110/0x110
<4> [560.455888] ? __device_attach_driver+0x110/0x110
<4> [560.455890] bus_for_each_dev+0x72/0xc0
<4> [560.455893] bus_add_driver+0x1bb/0x210
<4> [560.455897] driver_register+0x66/0xc0
<4> [560.455900] i915_init+0x1f/0x82 [i915]
<4> [560.456040] ? 0xffffffffa03c3000
<4> [560.456042] do_one_initcall+0x53/0x2f0
<4> [560.456045] ? rcu_read_lock_sched_held+0x51/0x80
<4> [560.456049] ? kmalloc_trace+0xae/0x100
<4> [560.456051] do_init_module+0x45/0x1c0
<4> [560.456054] load_module+0x1d5e/0x1e90
<4> [560.456064] ? __do_sys_finit_module+0xaf/0x120
<4> [560.456066] __do_sys_finit_module+0xaf/0x120
<4> [560.456074] do_syscall_64+0x37/0x90
<4> [560.456077] entry_SYSCALL_64_after_hwframe+0x63/0xcd