INFO: task syz-executor.5:9631 blocked for more than 143 seconds.
Not tainted 5.17.0-rc5-syzkaller-00041-g73878e5eb1bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:26864 pid: 9631 ppid: 3626 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: 0033:0x7f5e04131c9b
RSP: 002b:00007ffcbab41620 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f5e04131c9b
RDX: 00007f5e04296988 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f5e04293960 R08: 0000000000000000 R09: 00007f5e04296990
R10: 00007ffcbab41720 R11: 0000000000000293 R12: 000000000003668d
R13: 00007ffcbab41720 R14: 00007f5e04291f60 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/3277:
#0: ffff88814af30098 (&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
3 locks held by kworker/u4:7/3972:
1 lock held by syz-executor.5/9631:
#0: ffff888027830218 (&vq->mutex){+.+.}-{3:3}, at: vhost_net_stop_vq drivers/vhost/net.c:1359 [inline]
#0: ffff888027830218 (&vq->mutex){+.+.}-{3:3}, at: vhost_net_stop+0x10c/0x1e0 drivers/vhost/net.c:1373
1 lock held by vhost-9633/9635:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc5-syzkaller-00041-g73878e5eb1bd #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: 964 Comm: kworker/u4:4 Not tainted 5.17.0-rc5-syzkaller-00041-g73878e5eb1bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy10 ieee80211_iface_work
RIP: 0010:filter_irq_stacks+0x85/0x90 kernel/stacktrace.c:404
Code: 39 c8 72 1f 49 ff c6 48 83 c3 08 48 39 e8 72 c5 48 c7 c1 a3 07 40 8a 48 39 c8 73 b9 eb 08 45 89 fe eb 03 41 ff c6 44 89 f0 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 90 be 01 00 00 00 48 c7 c7 60 a8 b2
RSP: 0018:ffffc900047274f8 EFLAGS: 00000246
RAX: 0000000000000009 RBX: ffff888027915800 RCX: 0000000000000001
RDX: 0000000000000b20 RSI: 0000000000000009 RDI: ffffc90004727590
RBP: ffffffff8a400000 R08: 0000000000000023 R09: ffffc900047274f0
R10: fffff520008e4e8c R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff8a200100 R14: 0000000000000009 R15: 0000000000000009
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c015406008 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__stack_depot_save+0x33/0x4a0 lib/stackdepot.c:360
kasan_save_stack mm/kasan/common.c:39 [inline]
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:436 [inline]
____kasan_kmalloc+0xee/0x110 mm/kasan/common.c:515
kasan_kmalloc include/linux/kasan.h:270 [inline]
kmem_cache_alloc_trace+0x9d/0x330 mm/slub.c:3257
kmalloc include/linux/slab.h:581 [inline]
kzalloc include/linux/slab.h:714 [inline]
ieee802_11_parse_elems_crc+0xc7/0x1040 net/mac80211/util.c:1489
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2228 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline]
ieee80211_ibss_rx_queued_mgmt+0x389/0x2b30 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: 39 c8 cmp %ecx,%eax
2: 72 1f jb 0x23
4: 49 ff c6 inc %r14
7: 48 83 c3 08 add $0x8,%rbx
b: 48 39 e8 cmp %rbp,%rax
e: 72 c5 jb 0xffffffd5
10: 48 c7 c1 a3 07 40 8a mov $0xffffffff8a4007a3,%rcx
17: 48 39 c8 cmp %rcx,%rax
1a: 73 b9 jae 0xffffffd5
1c: eb 08 jmp 0x26
1e: 45 89 fe mov %r15d,%r14d
21: eb 03 jmp 0x26
23: 41 ff c6 inc %r14d
26: 44 89 f0 mov %r14d,%eax
29: 5b pop %rbx
* 2a: 41 5c pop %r12 <-- trapping instruction
2c: 41 5d pop %r13
2e: 41 5e pop %r14
30: 41 5f pop %r15
32: 5d pop %rbp
33: c3 retq
34: 90 nop
35: be 01 00 00 00 mov $0x1,%esi
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: c7 (bad)
3d: 60 (bad)
3e: a8 b2 test $0xb2,%al