INFO: task syz-executor.4:5082 blocked for more than 143 seconds.
Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28112 pid: 5082 ppid: 3626 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4f00 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6428
__mutex_lock_common kernel/locking/mutex.c:673 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733
vhost_net_stop_vq drivers/vhost/net.c:1359 [inline]
vhost_net_stop+0x142/0x270 drivers/vhost/net.c:1373
vhost_net_release+0x9c/0x2d0 drivers/vhost/net.c:1405
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3451fbfc2b
RSP: 002b:00007ffd518f21e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f3451fbfc2b
RDX: 00007f3452127880 RSI: ffffffffffffffff RDI: 0000000000000004
RBP: 00007f3452121960 R08: 0000000000000000 R09: 00007f3452127888
R10: 00007ffd518f22e0 R11: 0000000000000293 R12: 00000000001fc4a7
R13: 00007ffd518f22e0 R14: 00007f345211ff60 R15: 000000000000015e
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb852e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
1 lock held by udevd/2968:
2 locks held by getty/3283:
#0: ffff88807f729098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b632e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077
1 lock held by syz-executor.4/5082:
#0: ffff88802f720218 (&vq->mutex){+.+.}-{3:3}, at: vhost_net_stop_vq drivers/vhost/net.c:1359 [inline]
#0: ffff88802f720218 (&vq->mutex){+.+.}-{3:3}, at: vhost_net_stop+0x142/0x270 drivers/vhost/net.c:1373
1 lock held by vhost-5083/5093:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x2e9/0x3a0 kernel/kthread.c:359
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: 19327 Comm: kworker/u4:23 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__kasan_check_read+0x4/0x10 mm/kasan/shadow.c:31
Code: 48 07 48 85 db 0f 85 95 c5 49 07 48 83 c4 60 5b 5d 41 5c 41 5d c3 c3 e9 95 c6 49 07 cc cc cc cc cc cc cc cc cc cc 48 8b 0c 24 <89> f6 31 d2 e9 f3 f9 ff ff 0f 1f 00 48 8b 0c 24 89 f6 ba 01 00 00
RSP: 0018:ffffc90010cbf908 EFLAGS: 00000057
RAX: 0000000000000000 RBX: 1ffff92002197f29 RCX: ffffffff815cbf8f
RDX: 0000000000000028 RSI: 0000000000000008 RDI: ffffffff8ffbaa40
RBP: 0000000000000200 R08: 0000000000000000 R09: ffffffff8ffbab27
R10: fffffbfff1ff7564 R11: 0000000000000000 R12: 0000000000000009
R13: ffff888020f544b0 R14: 0000000000000028 R15: ffff888020f544d0
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00005b948 CR3: 000000000b88e000 CR4: 0000000000350ee0
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
hlock_class kernel/locking/lockdep.c:199 [inline]
mark_lock+0xef/0x17b0 kernel/locking/lockdep.c:4583
mark_usage kernel/locking/lockdep.c:4526 [inline]
__lock_acquire+0x8a7/0x5470 kernel/locking/lockdep.c:4981
lock_acquire kernel/locking/lockdep.c:5639 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:694 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:719
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2e9/0x3a0 kernel/kthread.c:359
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 48 07 rex.W (bad)
2: 48 85 db test %rbx,%rbx
5: 0f 85 95 c5 49 07 jne 0x749c5a0
b: 48 83 c4 60 add $0x60,%rsp
f: 5b pop %rbx
10: 5d pop %rbp
11: 41 5c pop %r12
13: 41 5d pop %r13
15: c3 retq
16: c3 retq
17: e9 95 c6 49 07 jmpq 0x749c6b1
1c: cc int3
1d: cc int3
1e: cc int3
1f: cc int3
20: cc int3
21: cc int3
22: cc int3
23: cc int3
24: cc int3
25: cc int3
26: 48 8b 0c 24 mov (%rsp),%rcx
* 2a: 89 f6 mov %esi,%esi <-- trapping instruction
2c: 31 d2 xor %edx,%edx
2e: e9 f3 f9 ff ff jmpq 0xfffffa26
33: 0f 1f 00 nopl (%rax)
36: 48 8b 0c 24 mov (%rsp),%rcx
3a: 89 f6 mov %esi,%esi
3c: ba .byte 0xba
3d: 01 00 add %eax,(%rax)