INFO: task syz-executor.0:13163 blocked for more than 143 seconds.
Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24664 pid:13163 tgid:13163 ppid:9756 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2558
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+0x355/0x620 kernel/sched/completion.c:148
vhost_worker_flush+0x16b/0x1c0 drivers/vhost/vhost.c:293
vhost_dev_flush+0x10d/0x1c0 drivers/vhost/vhost.c:307
vhost_vsock_flush drivers/vhost/vsock.c:694 [inline]
vhost_vsock_dev_release+0x225/0x410 drivers/vhost/vsock.c:746
__fput+0x42b/0x8a0 fs/file_table.c:422
__do_sys_close fs/open.c:1556 [inline]
__se_sys_close fs/open.c:1541 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1541
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f94f2a7cd9a
RSP: 002b:00007ffc28dceb90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f94f2a7cd9a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f94f2bad980 R08: 0000001b2c620000 R09: 00000000000001cf
R10: 00000000819d215e R11: 0000000000000293 R12: 000000000007ddbe
R13: 000000000007da9c R14: 00007ffc28dced50 R15: 00007f94f2a34cb0
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
1 lock held by khungtaskd/29:
#0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334d60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
4 locks held by kworker/u8:2/34:
#0: ffff888015ecd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff888015ecd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc90000aa7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc90000aa7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffffffff8f59a2d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:591
#3: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#3: ffffffff8e33a0f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x463/0x820 kernel/rcu/tree_exp.h:939
2 locks held by kworker/u8:5/1072:
2 locks held by kworker/u8:8/2420:
2 locks held by getty/4848:
#0: ffff88802af1a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.5/8740:
1 lock held by syz-executor.0/13163:
#0: ffff888061f01b70 (&worker->mutex){+.+.}-{3:3}, at: vhost_dev_flush+0xcf/0x1c0 drivers/vhost/vhost.c:302
1 lock held by syz-executor.1/14473:
1 lock held by syz-executor.5/14551:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
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:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: kauditd Not tainted 6.9.0-rc6-syzkaller-00053-g0106679839f7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:505 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1120 [inline]
RIP: 0010:trace_hrtimer_cancel include/trace/events/timer.h:317 [inline]
RIP: 0010:debug_deactivate+0x44/0x220 kernel/time/hrtimer.c:485
Code: 03 0f 1f 44 00 00 e8 1b 4d 12 00 65 8b 1d c0 0e 80 7e bf 07 00 00 00 89 de e8 48 51 12 00 83 fb 07 77 79 e8 fe 4c 12 00 89 dd <48> 89 e8 48 c1 e8 06 48 8d 3c c5 68 f9 a8 8f be 08 00 00 00 e8 f3
RSP: 0018:ffffc90000007d40 EFLAGS: 00000046
RAX: ffffffff8183c522 RBX: 0000000000000000 RCX: ffff8880176b5a00
RDX: 0000000000010002 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000000 R08: ffffffff8183c518 R09: 1ffffffff2921f29
R10: dffffc0000000000 R11: fffffbfff2921f2a R12: 1ffff1101728592b
R13: dffffc0000000000 R14: ffffc900045e7d60 R15: ffff8880b942c900
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c51dad988 CR3: 000000002be7a000 CR4: 0000000000350ef0
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:1660 [inline]
__hrtimer_run_queues+0x30f/0xd50 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2010 [inline]
RIP: 0010:vprintk_emit+0x576/0x770 kernel/printk/printk.c:2347
Code: ce 1f 00 4c 21 e3 0f 85 3a 01 00 00 e8 53 c9 1f 00 4d 89 ec 4d 85 ff 75 07 e8 46 c9 1f 00 eb 06 e8 3f c9 1f 00 fb 44 8b 3c 24 <48> c7 c7 80 08 21 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00
RSP: 0018:ffffc90000a47ae0 EFLAGS: 00000293
RAX: ffffffff817648e1 RBX: 0000000000000000 RCX: ffff8880176b5a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a47bd0 R08: ffffffff817648bf R09: 1ffffffff1f51f2d
R10: dffffc0000000000 R11: fffffbfff1f51f2e R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff8176473f R15: 00000000000000d7
_printk+0xd5/0x120 kernel/printk/printk.c:2373
kauditd_printk_skb kernel/audit.c:546 [inline]
kauditd_hold_skb+0x1bc/0x210 kernel/audit.c:581
kauditd_send_queue+0x2b3/0x310 kernel/audit.c:766
kauditd_thread+0x75c/0x990 kernel/audit.c:890
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244