INFO: task syz-executor.4:12758 blocked for more than 143 seconds.
Not tainted 5.17.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26864 pid:12758 ppid: 3632 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0x926/0x1080 kernel/sched/core.c:6304
schedule+0x12b/0x1f0 kernel/sched/core.c:6377
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436
__mutex_lock_common+0xd1f/0x2590 kernel/locking/mutex.c:673
__mutex_lock kernel/locking/mutex.c:733 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785
vhost_net_stop_vq drivers/vhost/net.c:1359 [inline]
vhost_net_stop+0x10c/0x1e0 drivers/vhost/net.c:1373
vhost_net_release+0x100/0x4d0 drivers/vhost/net.c:1405
__fput+0x3fc/0x870 fs/file_table.c:317
task_work_run+0x146/0x1c0 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+0x209/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc825f61c8b
RSP: 002b:00007ffca2f46c60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fc825f61c8b
RDX: 0000001b2e620000 RSI: 0000001b2e623cb8 RDI: 0000000000000003
RBP: 00007fc8260c3960 R08: 0000000000000000 R09: 00000000dca4cee5
R10: 00007ffca2f480b8 R11: 0000000000000293 R12: 000000000009b8f1
R13: 00007ffca2f46d60 R14: 00007fc8260c2030 R15: 0000000000000032
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8cb1d460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3278:
#0: ffff8880241df098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2075
1 lock held by syz-executor.4/12758:
#0: ffff888038200218 (&vq->mutex){+.+.}-{3:3}, at: vhost_net_stop_vq drivers/vhost/net.c:1359 [inline]
#0: ffff888038200218 (&vq->mutex){+.+.}-{3:3}, at: vhost_net_stop+0x10c/0x1e0 drivers/vhost/net.c:1373
1 lock held by vhost-12760/12762:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc6-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:369
kthread+0x2a3/0x2d0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4073 Comm: kworker/u4:7 Not tainted 5.17.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy13 ieee80211_iface_work
RIP: 0010:ieee80211_sta_get_rates+0x3b4/0x6c0 net/mac80211/util.c:2146
Code: 48 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28 84 c0 0f 85 04 01 00 00 0f b7 03 03 44 24 2c 99 f7 7c 24 68 <89> c3 89 c7 8b 6c 24 30 89 ee e8 5d 8c d2 f7 39 eb 4d 89 f4 75 66
RSP: 0018:ffffc9000294f910 EFLAGS: 00000206
RAX: 00000000000000f0 RBX: ffff88802b8f5f9c RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff89b30aad R09: fffffbfff1c00b1e
R10: fffffbfff1c00b1e R11: 0000000000000000 R12: 0000000000000018
R13: dffffc0000000000 R14: ffff88802b8f33d0 R15: 0000000000000008
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0156041c0 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_update_sta_info net/mac80211/ibss.c:1003 [inline]
ieee80211_rx_bss_info net/mac80211/ibss.c:1117 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
ieee80211_ibss_rx_queued_mgmt+0xebd/0x2b30 net/mac80211/ibss.c:1639
ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline]
ieee80211_iface_work+0x713/0xca0 net/mac80211/iface.c:1581
process_one_work+0x86c/0x1190 kernel/workqueue.c:2307
worker_thread+0xab1/0x1300 kernel/workqueue.c:2454
kthread+0x2a3/0x2d0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 48 89 d8 mov %rbx,%rax
3: 48 c1 e8 03 shr $0x3,%rax
7: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
e: fc ff df
11: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
16: 84 c0 test %al,%al
18: 0f 85 04 01 00 00 jne 0x122
1e: 0f b7 03 movzwl (%rbx),%eax
21: 03 44 24 2c add 0x2c(%rsp),%eax
25: 99 cltd
26: f7 7c 24 68 idivl 0x68(%rsp)
* 2a: 89 c3 mov %eax,%ebx <-- trapping instruction
2c: 89 c7 mov %eax,%edi
2e: 8b 6c 24 30 mov 0x30(%rsp),%ebp
32: 89 ee mov %ebp,%esi
34: e8 5d 8c d2 f7 callq 0xf7d28c96
39: 39 eb cmp %ebp,%ebx
3b: 4d 89 f4 mov %r14,%r12
3e: 75 66 jne 0xa6