Hi folks, I just wanted to share my logs via paste but didn't look at
what size they are.
I opened the file in Geany and press Ctrl + A, Ctrl + C, and then go
to Chrome in tab with opened pastebin.com and pressed Ctrl + V. I did
not expect that after such action the GUI of the system hangs.
I connected via ssh and saw follow messages:
[ 317.662558] nf_conntrack: default automatic helper assignment has
been turned off for security reasons and CT-based firewall rule not
found. Use the iptables CT target to attach helpers instead.
[ 2003.644286] GpuWatchdog[4339]: segfault at 0 ip 0000562357dfa40c sp
00007fbc6bdc3500 error 6 in chrome[562353e82000+731f000]
[ 2003.644341] Code: 3d bd 02 47 fb be 01 00 00 00 ba 07 00 00 00 e8
3a 9f a6 fe 48 8d 3d 0f 41 48 fb be 01 00 00 00 ba 03 00 00 00 e8 24
9f a6 fe <c7> 04 25 00 00 00 00 37 13 00 00 c6 05 82 a8 bd 03 01 80 7d
87 00
[ 2032.449702] GpuWatchdog[10475]: segfault at 0 ip 000055ad62b7240c
sp 00007f81bc7ff500 error 6 in chrome[55ad5ebfa000+731f000]
[ 2032.449719] Code: 3d bd 02 47 fb be 01 00 00 00 ba 07 00 00 00 e8
3a 9f a6 fe 48 8d 3d 0f 41 48 fb be 01 00 00 00 ba 03 00 00 00 e8 24
9f a6 fe <c7> 04 25 00 00 00 00 37 13 00 00 c6 05 82 a8 bd 03 01 80 7d
87 00
[ 2060.726076] GpuWatchdog[10663]: segfault at 0 ip 0000558ea234c40c
sp 00007f26a3d3e500 error 6 in chrome[558e9e3d4000+731f000]
[ 2060.726093] Code: 3d bd 02 47 fb be 01 00 00 00 ba 07 00 00 00 e8
3a 9f a6 fe 48 8d 3d 0f 41 48 fb be 01 00 00 00 ba 03 00 00 00 e8 24
9f a6 fe <c7> 04 25 00 00 00 00 37 13 00 00 c6 05 82 a8 bd 03 01 80 7d
87 00
[ 2253.777053] BUG: workqueue lockup - pool cpus=2 node=0 flags=0x0
nice=0 stuck for 60s!
[ 2253.777144] Showing busy workqueues and worker pools:
[ 2253.777149] workqueue events: flags=0x0
[ 2253.777313] pwq 22: cpus=11 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2253.777849] in-flight: 10359:key_garbage_collector
[ 2253.777856] ======================================================
[ 2253.777856] WARNING: possible circular locking dependency detected
[ 2253.777857] 5.5.0-0.rc5.git3.2.fc32.x86_64 #1 Not tainted
[ 2253.777857] ------------------------------------------------------
[ 2253.777858] WRRende~ckend#1/6583 is trying to acquire lock:
[ 2253.777858] ffffffffb866aa40 (console_owner){-.-.}, at:
console_unlock+0x197/0x5c0
[ 2253.777860] but task is already holding lock:
[ 2253.777861] ffff9a5a3b9ee798 (&(&pool->lock)->rlock){-.-.}, at:
show_workqueue_state.cold+0x7c/0x2d1
[ 2253.777863] which lock already depends on the new lock.
[ 2253.777864] the existing dependency chain (in reverse order) is:
[ 2253.777864] -> #1 (&(&pool->lock)->rlock){-.-.}:
[ 2253.777866] _raw_spin_lock+0x31/0x80
[ 2253.777866] __queue_work+0x36b/0x610
[ 2253.777866] queue_work_on+0x85/0x90
[ 2253.777867] soft_cursor+0x19f/0x220
[ 2253.777867] bit_cursor+0x3d4/0x5f0
[ 2253.777868] hide_cursor+0x2a/0x90
[ 2253.777868] vt_console_print+0x3ef/0x400
[ 2253.777868] console_unlock+0x41a/0x5c0
[ 2253.777869] register_framebuffer+0x28f/0x300
[ 2253.777870]
__drm_fb_helper_initial_config_and_unlock+0x32e/0x4e0 [drm_kms_helper]
[ 2253.777870] amdgpu_fbdev_init+0xbc/0xf0 [amdgpu]
[ 2253.777870] amdgpu_device_init.cold+0x1674/0x1acc [amdgpu]
[ 2253.777871] amdgpu_driver_load_kms+0x53/0x1a0 [amdgpu]
[ 2253.777871] drm_dev_register+0x113/0x150 [drm]
[ 2253.777872] amdgpu_pci_probe+0xec/0x150 [amdgpu]
[ 2253.777872] local_pci_probe+0x42/0x80
[ 2253.777872] pci_device_probe+0x107/0x1a0
[ 2253.777873] really_probe+0x147/0x3c0
[ 2253.777873] driver_probe_device+0xb6/0x100
[ 2253.777874] device_driver_attach+0x53/0x60
[ 2253.777874] __driver_attach+0x8c/0x150
[ 2253.777874] bus_for_each_dev+0x7b/0xc0
[ 2253.777875] bus_add_driver+0x150/0x1f0
[ 2253.777875] driver_register+0x6c/0xc0
[ 2253.777875] do_one_initcall+0x5d/0x2f0
[ 2253.777876] do_init_module+0x5c/0x230
[ 2253.777876] load_module+0x2400/0x2650
[ 2253.777877] __do_sys_init_module+0x181/0x1b0
[ 2253.777877] do_syscall_64+0x5c/0xa0
[ 2253.777877] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 2253.777878] -> #0 (console_owner){-.-.}:
[ 2253.777879] __lock_acquire+0xe13/0x1a30
[ 2253.777880] lock_acquire+0xa2/0x1b0
[ 2253.777880] console_unlock+0x1f0/0x5c0
[ 2253.777880] vprintk_emit+0x180/0x350
[ 2253.777881] printk+0x58/0x6f
[ 2253.777881] show_pwq+0x6c/0x298
[ 2253.777882] show_workqueue_state.cold+0x91/0x2d1
[ 2253.777882] wq_watchdog_timer_fn+0x1ba/0x240
[ 2253.777882] call_timer_fn+0xaf/0x2c0
[ 2253.777883] run_timer_softirq+0x3a0/0x5e0
[ 2253.777883] __do_softirq+0xe1/0x45d
[ 2253.777884] irq_exit+0xf7/0x100
[ 2253.777884] smp_apic_timer_interrupt+0xa4/0x230
[ 2253.777884] apic_timer_interrupt+0xf/0x20
[ 2253.777885] other info that might help us debug this:
[ 2253.777886] Possible unsafe locking scenario:
[ 2253.777886] CPU0 CPU1
[ 2253.777887] ---- ----
[ 2253.777887] lock(&(&pool->lock)->rlock);
[ 2253.777888] lock(console_owner);
[ 2253.777889] lock(&(&pool->lock)->rlock);
[ 2253.777890] lock(console_owner);
[ 2253.777891] *** DEADLOCK ***
[ 2253.777892] 4 locks held by WRRende~ckend#1/6583:
[ 2253.777892] #0: ffffb53080003e68 ((&wq_watchdog_timer)){+.-.}, at:
call_timer_fn+0x5/0x2c0
[ 2253.777893] #1: ffffffffb86959e0 (rcu_read_lock){....}, at:
show_workqueue_state+0x5/0xa0
[ 2253.777895] #2: ffff9a5a3b9ee798 (&(&pool->lock)->rlock){-.-.},
at: show_workqueue_state.cold+0x7c/0x2d1
[ 2253.777897] #3: ffffffffb866ad20 (console_lock){+.+.}, at:
vprintk_emit+0x177/0x350
[ 2253.777899] stack backtrace:
[ 2253.777899] CPU: 0 PID: 6583 Comm: WRRende~ckend#1 Not tainted
5.5.0-0.rc5.git3.2.fc32.x86_64 #1
[ 2253.777900] Hardware name: System manufacturer System Product
Name/ROG STRIX X570-I GAMING, BIOS 1405 11/19/2019
[ 2253.777900] Call Trace:
[ 2253.777901] <IRQ>
[ 2253.777901] dump_stack+0x8f/0xd0
[ 2253.777901] check_noncircular+0x176/0x190
[ 2253.777902] ? save_trace+0x39/0x2e0
[ 2253.777902] __lock_acquire+0xe13/0x1a30
[ 2253.777902] lock_acquire+0xa2/0x1b0
[ 2253.777903] ? console_unlock+0x197/0x5c0
[ 2253.777903] console_unlock+0x1f0/0x5c0
[ 2253.777903] ? console_unlock+0x197/0x5c0
[ 2253.777904] vprintk_emit+0x180/0x350
[ 2253.777904] printk+0x58/0x6f
[ 2253.777904] show_pwq+0x6c/0x298
[ 2253.777905] show_workqueue_state.cold+0x91/0x2d1
[ 2253.777905] wq_watchdog_timer_fn+0x1ba/0x240
[ 2253.777906] ? show_workqueue_state+0xa0/0xa0
[ 2253.777906] ? show_workqueue_state+0xa0/0xa0
[ 2253.777906] call_timer_fn+0xaf/0x2c0
[ 2253.777907] run_timer_softirq+0x3a0/0x5e0
[ 2253.777907] ? sched_clock_cpu+0xc/0xc0
[ 2253.777907] __do_softirq+0xe1/0x45d
[ 2253.777908] irq_exit+0xf7/0x100
[ 2253.777908] smp_apic_timer_interrupt+0xa4/0x230
[ 2253.777908] apic_timer_interrupt+0xf/0x20
[ 2253.777909] </IRQ>
[ 2253.777909] RIP: 0033:0x559252e02b10
[ 2253.777910] Code: 48 39 c1 72 14 48 8d b5 d0 f7 ff ff 48 89 df ba
01 00 00 00 e8 41 94 f8 ff 48 81 c4 18 08 00 00 5b 41 5e 41 5f 5d c3
0f 1f 00 <55> 4
[ 2253.777911] Lost 7 message(s)!
[ 2253.777983] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=21/256 refcnt=22
[ 2253.777986] pending: dbs_work_handler, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, free_obj_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work
[ 2253.778029] workqueue mm_percpu_wq: flags=0x8
[ 2253.778037] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2253.778040] pending: vmstat_update
[ 2253.778126] pool 22: cpus=11 node=0 flags=0x0 nice=0 hung=0s
workers=4 idle: 7882 9625 9557
[ 2283.982347] BUG: workqueue lockup - pool cpus=2 node=0 flags=0x0
nice=0 stuck for 90s!
[ 2283.982361] Showing busy workqueues and worker pools:
[ 2283.982364] workqueue events: flags=0x0
[ 2283.982368] pwq 44: cpus=22 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2283.982373] pending: dbs_work_handler
[ 2283.982382] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=26/256 refcnt=27
[ 2283.982386] pending: dbs_work_handler, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, free_obj_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work
[ 2283.982430] workqueue mm_percpu_wq: flags=0x8
[ 2283.982433] pwq 44: cpus=22 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2283.982437] pending: vmstat_update
[ 2283.982445] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2283.982448] pending: vmstat_update
[ 2314.191651] BUG: workqueue lockup - pool cpus=2 node=0 flags=0x0
nice=0 stuck for 120s!
[ 2314.191665] Showing busy workqueues and worker pools:
[ 2314.191670] workqueue events: flags=0x0
[ 2314.191678] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=26/256 refcnt=27
[ 2314.191683] pending: dbs_work_handler, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, free_obj_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work
[ 2314.191730] workqueue mm_percpu_wq: flags=0x8
[ 2314.191738] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2314.191742] pending: vmstat_update
[ 2374.605265] BUG: workqueue lockup - pool cpus=2 node=0 flags=0x0
nice=0 stuck for 31s!
[ 2374.605278] Showing busy workqueues and worker pools:
[ 2374.605283] workqueue events: flags=0x0
[ 2374.605291] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=28/256 refcnt=29
[ 2374.605295] in-flight: 298:dbs_work_handler
[ 2374.605301] pending: psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, free_obj_work,
psi_avgs_work
[ 2374.605343] workqueue mm_percpu_wq: flags=0x8
[ 2374.605350] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2374.605354] pending: vmstat_update
[ 2374.605436] pool 4: cpus=2 node=0 flags=0x0 nice=0 hung=31s
workers=2 idle: 9755
[ 2435.023875] BUG: workqueue lockup - pool cpus=2 node=0 flags=0x0
nice=0 stuck for 51s!
[ 2435.023886] Showing busy workqueues and worker pools:
[ 2435.023891] workqueue events: flags=0x0
[ 2435.023898] pwq 6: cpus=3 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2435.023901] in-flight: 10765:dbs_work_handler
[ 2435.023907] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=37/256 refcnt=38
[ 2435.023910] pending: dbs_work_handler, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, free_obj_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work
[ 2435.023953] workqueue mm_percpu_wq: flags=0x8
[ 2435.023960] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2435.023963] pending: vmstat_update
[ 2465.238181] BUG: workqueue lockup - pool cpus=2 node=0 flags=0x0
nice=0 stuck for 81s!
[ 2465.238195] Showing busy workqueues and worker pools:
[ 2465.238200] workqueue events: flags=0x0
[ 2465.238209] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=40/256 refcnt=41
[ 2465.238213] pending: dbs_work_handler, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, free_obj_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work
[ 2465.238265] workqueue mm_percpu_wq: flags=0x8
[ 2465.238273] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2465.238276] pending: vmstat_update
[ 2494.148975] sysrq: Emergency Sync
[ 2494.157232] Emergency Sync complete
[ 2495.439516] BUG: workqueue lockup - pool cpus=2 node=0 flags=0x0
nice=0 stuck for 111s!
[ 2495.439524] Showing busy workqueues and worker pools:
[ 2495.439528] workqueue events: flags=0x0
[ 2495.439534] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=40/256 refcnt=41
[ 2495.439536] pending: dbs_work_handler, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, free_obj_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work, psi_avgs_work, psi_avgs_work,
psi_avgs_work, psi_avgs_work
[ 2495.439573] workqueue mm_percpu_wq: flags=0x8
[ 2495.439578] pwq 4: cpus=2 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 2495.439580] pending: vmstat_update
[ 2497.564944] sysrq: Show Blocked State
[ 2497.564949] task PC stack pid father
[ 2517.692797] sysrq: Emergency Sync
[ 2517.700952] Emergency Sync complete
I know WARNING messages about "possible circular locking dependency
detected" usually ignored by the kernel developers.
But today is not a usual case, because I got the reproducible hang on
my system. After reboot, I repeated the copy-paste action with the
large text block again and reproduce the hang.
>From the trace, I see that here is culprit the amdgpu driver, please
correct me if I am wrong.
Full kernel log is here: https://pastebin.com/7Qvm6qDm
--
Best Regards,
Mike Gavrilov.
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