INFO: task syz.1.8:3735 blocked for more than 143 seconds.
Not tainted 6.1.110-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.8 state:D stack:25832 pid:3735 ppid:3638 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
perf_pending_task_sync kernel/events/core.c:5029 [inline]
_free_event+0x169/0x1090 kernel/events/core.c:5035
put_event kernel/events/core.c:5160 [inline]
perf_event_release_kernel+0x873/0x900 kernel/events/core.c:5285
perf_release+0x37/0x40 kernel/events/core.c:5295
__fput+0x3f6/0x8d0 fs/file_table.c:320
task_work_run+0x246/0x300 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5edb17def9
RSP: 002b:00007fff1abccca8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f5edb337a80 RCX: 00007f5edb17def9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f5edb337a80 R08: 00007f5edb322000 R09: 00007fff1abccf9f
R10: 00000000005f9ec4 R11: 0000000000000246 R12: 0000000000012f73
R13: 00007fff1abccdb0 R14: 0000000000000032 R15: ffffffffffffffff
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d32b1d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32b9d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
#0: ffffffff8d32b000 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d32b000 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d32b000 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6494
4 locks held by udevd/3092:
2 locks held by getty/3402:
#0: ffff88802de1d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2198
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ae/0x3f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3743 Comm: udevd Not tainted 6.1.110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
RIP: 0010:lock_release+0x5d8/0xa20 kernel/locking/lockdep.c:5684
Code: 8b 64 24 08 4c 8b 6c 24 20 4c 8d b4 24 90 00 00 00 48 c7 c7 c0 14 0c 8b e8 a5 45 3c 09 b8 ff ff ff ff 65 0f c1 05 98 c9 97 7e <83> f8 01 0f 85 94 00 00 00 4c 89 f3 48 c1 eb 03 42 80 3c 3b 00 74
RSP: 0018:ffffc9000491f8e0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: ffff888075770ad0 RCX: ffffc9000491f903
RDX: 0000000000000002 RSI: ffffffff8b0c14c0 RDI: ffffffff8b5d6dc0
RBP: ffffc9000491fa10 R08: dffffc0000000000 R09: fffffbfff1d33c96
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000923f28
R13: 0000000000000046 R14: ffffc9000491f970 R15: dffffc0000000000
FS: 00007fcf3b4efc80(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1766413bd0 CR3: 00000000598c5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x75/0x130 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock kernel/sched/wait.c:140 [inline]
__wake_up+0x128/0x1c0 kernel/sched/wait.c:160
signalfd_notify include/linux/signalfd.h:22 [inline]
__send_signal_locked+0xbdc/0xdc0 kernel/signal.c:1177
do_send_sig_info kernel/signal.c:1300 [inline]
group_send_sig_info+0x28a/0x300 kernel/signal.c:1448
bpf_send_signal_common+0x2d8/0x420 kernel/trace/bpf_trace.c:882
____bpf_send_signal kernel/trace/bpf_trace.c:887 [inline]
bpf_send_signal+0x15/0x20 kernel/trace/bpf_trace.c:885
bpf_prog_7ba5217f62dcd359+0x38/0x3c
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:603 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2312
__bpf_trace_sys_enter+0x60/0x70 include/trace/events/syscalls.h:18
trace_sys_enter include/trace/events/syscalls.h:18 [inline]
syscall_trace_enter kernel/entry/common.c:81 [inline]
__syscall_enter_from_user_work kernel/entry/common.c:100 [inline]
syscall_enter_from_user_mode+0x206/0x230 kernel/entry/common.c:118
do_syscall_64+0x1e/0xb0 arch/x86/entry/common.c:77
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcf3b123457
Code: 73 01 c3 48 8b 0d d1 d9 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 e8 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 76 48 8b 15 a2 d9 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffef71bf2c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcf3b123457
RDX: 0000000000000004 RSI: 00007ffef71bf308 RDI: 0000000000000004
RBP: 00007ffef71bf314 R08: 0000000000000007 R09: ba04450a0c26b26d
R10: 00000000ffffffff R11: 0000000000000246 R12: 0000557560c9d240
R13: 00007ffef71bf308 R14: 0000000000000001 R15: 0000557560c7a910