INFO: task syz-executor393:5146 blocked for more than 143 seconds.
Not tainted 6.8.0-rc4-syzkaller-00331-gc1ca10ceffbb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor393 state:D stack:26608 pid:5146 tgid:5145 ppid:5080 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2159
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x354/0x620 kernel/sched/completion.c:148
__flush_work+0x950/0xad0 kernel/workqueue.c:3410
__cancel_work_timer+0x51d/0x6b0 kernel/workqueue.c:3497
uhid_dev_destroy drivers/hid/uhid.c:584 [inline]
uhid_char_release+0xaf/0x600 drivers/hid/uhid.c:662
__fput+0x429/0x8a0 fs/file_table.c:376
task_work_run+0x24e/0x310 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa2c/0x2740 kernel/exit.c:871
do_group_exit+0x206/0x2c0 kernel/exit.c:1020
get_signal+0x176d/0x1850 kernel/signal.c:2893
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212
do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f3fd486d499
RSP: 002b:00007f3fd482e238 EFLAGS: 00000246
ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f3fd48f7308 RCX: 00007f3fd486d499
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3fd48f7308
RBP: 00007f3fd48f7300 R08: 00007f3fd482e6c0 R09: 00007f3fd482e6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 6968752f7665642f
R13: 0000000000000000 R14: 00007fff52dae1f0 R15: 00007fff52dae2d8
Showing all locks held in the system:
3 locks held by kworker/1:1/27:
1 lock held by khungtaskd/29:
#0:
ffffffff8e130ae0
(
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/1:2/925:
7 locks held by kworker/1:3/4528:
2 locks held by getty/4816:
#0:
ffff8880302100a0
(
&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1:
ffffc90002f062f0
(
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/0:5/5117:
3 locks held by kworker/1:4/5144:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc4-syzkaller-00331-gc1ca10ceffbb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5144 Comm: kworker/1:4 Not tainted 6.8.0-rc4-syzkaller-00331-gc1ca10ceffbb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events uhid_device_add_worker
RIP: 0010:arch_static_branch include/trace/events/sched.h:771 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:trace_sched_overutilized_tp+0x0/0x120 include/trace/events/sched.h:771
Code: 0f 8c 19 ff ff ff 4c 89 f7 49 89 d7 e8 59 63 87 00 4c 89 fa e9 06 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 41 57 41 56 53 66 90 65 8b 05 6d e7 98 7e 83 f8 08 73 39 89 c3
RSP: 0018:ffffc900001f0658 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: ffff8881406c2000 RSI: 0000000000000001 RDI: ffff8881406c2000
RBP: ffffc900001f0cf0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff9200003e15a
R13: 1ffff9200003e15b R14: 0000000000000002 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
find_busiest_group kernel/sched/fair.c:10849 [inline]
load_balance+0x3405/0x8920 kernel/sched/fair.c:11296
rebalance_domains+0x572/0xac0 kernel/sched/fair.c:11736
__do_softirq+0x2bb/0x942 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu+0xf1/0x1c0 kernel/softirq.c:632
irq_exit_rcu+0x9/0x30 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x97/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1975 [inline]
RIP: 0010:vprintk_emit+0x4e6/0x720 kernel/printk/printk.c:2302
Code: 21 e3 0f 85 aa 01 00 00 e8 77 9e 1e 00 44 8b 24 24 4d 85 ff 75 07 e8 69 9e 1e 00 eb 06 e8 62 9e 1e 00 fb 48 c7 c7 80 c6 00 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 41 56 e8 61
RSP: 0018:ffffc9000436f180 EFLAGS: 00000293
RAX: ffffffff8174cc8e RBX: 0000000000000000 RCX: ffff88801ffd5940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e00c680
RBP: ffffc9000436f270 R08: ffffffff8174cc6b R09: 1ffffffff258aa9d
R10: dffffc0000000000 R11: fffffbfff258aa9e R12: 000000000000003a
R13: dffffc0000000000 R14: ffffffff8174caed R15: 0000000000000200
dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4850
dev_printk_emit+0xdd/0x120 drivers/base/core.c:4861
_dev_warn+0x122/0x170 drivers/base/core.c:4917
hid_parser_main+0x71f/0xaa0 drivers/hid/hid-core.c:632
hid_open_report+0xafa/0x14a0 drivers/hid/hid-core.c:1276
hid_parse include/linux/hid.h:1118 [inline]
hid_generic_probe+0x3d/0x90 drivers/hid/hid-generic.c:63
__hid_device_probe drivers/hid/hid-core.c:2633 [inline]
hid_device_probe+0x26e/0x4f0 drivers/hid/hid-core.c:2670
really_probe+0x29e/0xc50 drivers/base/dd.c:658
__driver_probe_device+0x1a2/0x3e0 drivers/base/dd.c:800
driver_probe_device+0x50/0x430 drivers/base/dd.c:830
__device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:457
__device_attach+0x333/0x520 drivers/base/dd.c:1030
bus_probe_device+0x189/0x260 drivers/base/bus.c:532
device_add+0x8ff/0xca0 drivers/base/core.c:3625
hid_add_device+0x3b6/0x520 drivers/hid/hid-core.c:2816
uhid_device_add_worker+0x44/0xf0 drivers/hid/uhid.c:73
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.855 msecs