[Bug 112110] New: [CI][DRMTIP]igt at kms_plane_scaling@pipe-b-scaler-with-rotation - dmesg-warn - rcu: INFO: rcu_preempt self-detected stall on CPU

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Oct 23 07:22:43 UTC 2019 

https://bugs.freedesktop.org/show_bug.cgi?id=112110

            Bug ID: 112110
           Summary: [CI][DRMTIP]igt at kms_plane_scaling@pipe-b-scaler-with-r
                    otation - dmesg-warn - rcu: INFO: rcu_preempt
                    self-detected stall on CPU
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: not set
          Priority: not set
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: lakshminarayana.vudum at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_388/fi-icl-u3/igt@kms_plane_scaling@pipe-b-scaler-with-rotation.html

<3> [423.630932] rcu: INFO: rcu_preempt self-detected stall on CPU
<3> [423.631125] rcu:   1-...!: (1 ticks this GP) idle=686/0/0x1
softirq=193155/193155 fqs=0 
<4> [423.631521]        (t=111849 jiffies g=100909 q=22)
<3> [423.631525] rcu: rcu_preempt kthread starved for 111849 jiffies! g100909
f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
<3> [423.631556] rcu: RCU grace-period kthread stack dump:
<6> [423.631572] rcu_preempt     R  running task    14368    10      2
0x80004000
<4> [423.631578] Call Trace:
<4> [423.631585]  ? __schedule+0x2ef/0x7f0
<4> [423.631591]  schedule+0x34/0xc0
<4> [423.631594]  schedule_timeout+0x1cc/0x3f0
<4> [423.631600]  ? __next_timer_interrupt+0xc0/0xc0
<4> [423.631607]  rcu_gp_kthread+0x604/0xb70
<4> [423.631636]  ? rcu_barrier_func+0xa0/0xa0
<4> [423.631639]  kthread+0x119/0x130
<4> [423.631642]  ? kthread_park+0x80/0x80
<4> [423.631646]  ret_from_fork+0x24/0x50
<6> [423.631656] Sending NMI from CPU 1 to CPUs 0:
<4> [423.631785] NMI backtrace for cpu 0 skipped: idling at
acpi_processor_ffh_cstate_enter+0x70/0xc0
<4> [423.632706] NMI backtrace for cpu 1
<4> [423.632709] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G     U           
5.4.0-rc2-g38af7ec455b5-drmtip_388+ #1
<4> [423.632710] Hardware name: Intel Corporation Ice Lake Client
Platform/IceLake U DDR4 SODIMM PD RVP TLC, BIOS
ICLSFWR1.R00.3183.A00.1905020411 05/02/2019
<4> [423.632711] Call Trace:
<4> [423.632713]  <IRQ>
<4> [423.632717]  dump_stack+0x67/0x9b
<4> [423.632719]  nmi_cpu_backtrace+0x8a/0x90
<4> [423.632723]  ? lapic_can_unplug_cpu+0x90/0x90
<4> [423.632724]  nmi_trigger_cpumask_backtrace+0xba/0x100
<4> [423.632728]  rcu_dump_cpu_stacks+0x9b/0xc9
<4> [423.632731]  rcu_sched_clock_irq+0x7a2/0xb80
<4> [423.632733]  ? tick_sched_do_timer+0x50/0x50
<4> [423.632735]  ? rcu_read_lock_sched_held+0x4d/0x80
<4> [423.632738]  ? tick_sched_do_timer+0x50/0x50
<4> [423.632739]  update_process_times+0x1f/0x40
<4> [423.632741]  tick_sched_timer+0x3e/0x80
<4> [423.632743]  __hrtimer_run_queues+0x121/0x4a0
<4> [423.632748]  hrtimer_interrupt+0xea/0x250
<4> [423.632752]  smp_apic_timer_interrupt+0x96/0x280
<4> [423.632754]  apic_timer_interrupt+0xf/0x20
<4> [423.632756]  </IRQ>
<4> [423.632758] RIP: 0010:cpuidle_enter_state+0xb2/0x450
<4> [423.632760] Code: 00 31 ff e8 20 11 8f ff 80 7c 24 0b 00 74 12 9c 58 f6 c4
02 0f 85 6e 03 00 00 31 ff e8 37 df 95 ff e8 c2 f3 99 ff fb 45 85 ed <0f> 88 37
03 00 00 4c 2b 24 24 48 ba cf f7 53 e3 a5 9b c4 20 49 63
<4> [423.632762] RSP: 0018:ffff997640113e80 EFLAGS: 00000202 ORIG_RAX:
ffffffffffffff13
<4> [423.632764] RAX: ffff8c76ddbbc040 RBX: ffffffffa74a2120 RCX:
0000000000000001
<4> [423.632765] RDX: 0000000000000046 RSI: 0000000000000006 RDI:
ffffffffa730cf61
<4> [423.632766] RBP: ffff8c76d998dfa8 R08: 0000000000000000 R09:
0000000000000000
<4> [423.632767] R10: 0000000000000000 R11: 0000000000000000 R12:
00000062a25ee2e7
<4> [423.632768] R13: 0000000000000002 R14: 0000000000000002 R15:
0000000000000000
<4> [423.632776]  cpuidle_enter+0x24/0x40
<4> [423.632779]  do_idle+0x1e7/0x250
<4> [423.632782]  cpu_startup_entry+0x14/0x20
<4> [423.632784]  start_secondary+0x15f/0x1b0
<4> [423.632787]  secondary_startup_64+0xa4/0xb0
<6> [423.632796] Sending NMI from CPU 1 to CPUs 2:
<4> [423.632838] NMI backtrace for cpu 2
<4> [423.632839] CPU: 2 PID: 2453 Comm: kms_plane_scali Tainted: G     U       
    5.4.0-rc2-g38af7ec455b5-drmtip_388+ #1
<4> [423.632840] Hardware name: Intel Corporation Ice Lake Client
Platform/IceLake U DDR4 SODIMM PD RVP TLC, BIOS
ICLSFWR1.R00.3183.A00.1905020411 05/02/2019
<4> [423.632840] RIP: 0010:strncpy+0x21/0x30
<4> [423.632841] Code: 75 ed f3 c3 0f 1f 44 00 00 48 85 d2 48 89 f8 74 1e 48 01
fa 48 89 f9 44 0f b6 06 41 80 f8 01 44 88 01 48 83 de ff 48 83 c1 01 <48> 39 d1
75 e8 f3 c3 0f 1f 84 00 00 00 00 00 80 3f 00 48 89 f8 48
<4> [423.632842] RSP: 0018:ffff997640ba3cd8 EFLAGS: 00000282
<4> [423.632843] RAX: ffff997640ba3dd8 RBX: ffff8c76ba9d0000 RCX:
ffff997640ba3dea
<4> [423.632844] RDX: ffff997640ba3df8 RSI: ffff8c76d7f0ef67 RDI:
ffff997640ba3dd8
<4> [423.632844] RBP: ffff8c76cc6ebfc8 R08: 0000000000000000 R09:
0000000000000001
<4> [423.632845] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff997640ba3dc0
<4> [423.632846] R13: ffffffffa6684980 R14: ffff8c76d7f0ef38 R15:
ffffffffa7085c10
<4> [423.632846] FS:  00007ff544daf240(0000) GS:ffff8c76dfd00000(0000)
knlGS:0000000000000000
<4> [423.632847] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [423.632848] CR2: 00007ff544de3002 CR3: 000000048d426001 CR4:
0000000000760ee0
<4> [423.632848] PKRU: 55555554
<4> [423.632849] Call Trace:
<4> [423.632849]  drm_mode_getproperty_ioctl+0x63/0x1d0
<4> [423.632850]  ? drm_property_create_bitmask+0x90/0x90
<4> [423.632850]  drm_ioctl_kernel+0xa7/0xf0
<4> [423.632851]  drm_ioctl+0x2e1/0x390
<4> [423.632851]  ? drm_property_create_bitmask+0x90/0x90
<4> [423.632852]  do_vfs_ioctl+0xa0/0x6f0
<4> [423.632853]  ? find_held_lock+0x2d/0x90
<4> [423.632853]  ? __task_pid_nr_ns+0xbc/0x1f0
<4> [423.632854]  ksys_ioctl+0x35/0x60
<4> [423.632854]  __x64_sys_ioctl+0x11/0x20
<4> [423.632855]  do_syscall_64+0x4f/0x210
<4> [423.632855]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [423.632856] RIP: 0033:0x7ff5444605d7
<4> [423.632857] Code: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7
c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01
f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 f7 d8 64 89 01 48
<4> [423.632857] RSP: 002b:00007ffd6cc990a8 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
<4> [423.632859] RAX: ffffffffffffffda RBX: 0000000000000005 RCX:
00007ff5444605d7
<4> [423.632859] RDX: 00007ffd6cc990e0 RSI: 00000000c04064aa RDI:
0000000000000005
<4> [423.632860] RBP: 00007ffd6cc990e0 R08: 0000000000000008 R09:
00007ff544735c40
<4> [423.632861] R10: 0000000000000009 R11: 0000000000000246 R12:
00000000c04064aa
<4> [423.632861] R13: 0000000000000005 R14: 0000000000000002 R15:
000055c796ae77e0
<7> [423.633173] [drm:drm_mode_addfb2] [FB:686]
<6> [423.633800] Sending NMI from CPU 1 to CPUs 4:
<4> [423.633809] NMI backtrace for cpu 4 skipped: idling at
acpi_processor_ffh_cstate_enter+0x70/0xc0
<6> [423.634805] Sending NMI from CPU 1 to CPUs 5:
<4> [423.634813] NMI backtrace for cpu 5 skipped: idling at
acpi_processor_ffh_cstate_enter+0x70/0xc0
<7> [423.635088] [drm:skl_update_scaler [i915]] scaler_user index 1.8: staged
scaling request for 8x8->3840x2160 scaler_users = 0x100
<7> [423.635127] [drm:intel_atomic_setup_scalers [i915]] Attached scaler id 1.0
to PLANE:92
<7> [423.635155] [drm:skl_compute_wm [i915]] [PLANE:92:plane 1B] ddb (   0 -   
0) -> (   0 -  975), size    0 ->  975

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