INFO: task syz-executor.4:4947 blocked for more than 143 seconds.
      Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:27896 pid:4947  ppid:3632   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5178 [inline]
 __schedule+0x8f3/0xd90 kernel/sched/core.c:6490
 schedule+0xcb/0x190 kernel/sched/core.c:6566
 schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
 do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
 __flush_work+0x124/0x1a0 kernel/workqueue.c:3073
 __cancel_work_timer+0x517/0x6a0 kernel/workqueue.c:3160
 p9_conn_destroy net/9p/trans_fd.c:890 [inline]
 p9_fd_close+0x2c5/0x410 net/9p/trans_fd.c:920
 p9_client_create+0xa16/0x1030 net/9p/client.c:1001
 v9fs_session_init+0x1e3/0x1990 fs/9p/v9fs.c:408
 v9fs_mount+0xd2/0xcb0 fs/9p/vfs_super.c:126
 legacy_get_tree+0xea/0x180 fs/fs_context.c:610
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x289/0xad0 fs/namespace.c:3040
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f89a3a8b5a9
RSP: 002b:00007f89a4c8e168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f89a3bac050 RCX: 00007f89a3a8b5a9
RDX: 0000000020000040 RSI: 0000000020000180 RDI: 0000000000000000
RBP: 00007f89a3ae6580 R08: 0000000020000340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff3e4a2fff R14: 00007f89a4c8e300 R15: 0000000000022000
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x47c/0x4b0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x169/0x280 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+0xcd5/0xd20 kernel/hung_task.c:377
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5446 Comm: syz-executor.4 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0033:0x7f99ab238791
Code: ff 41 08 c5 0f 85 f7 01 00 00 41 83 c6 01 44 39 73 04 0f 86 b7 00 00 00 48 8b 04 24 44 89 f7 48 8b 53 28 4d 89 f8 48 03 14 f8 <80> 3d 20 f9 16 00 00 49 89 d7 89 d5 75 37 b8 00 00 00 80 48 01 d0
RSP: 002b:00007ffcc6265c50 EFLAGS: 00000286
RAX: 00007f99aae00008 RBX: 00007f99ab3ac0e8 RCX: 0000001b31420000
RDX: ffffffff842f5aac RSI: 0000001b314224b8 RDI: 00000000000151ff
RBP: 0000000037d5692d R08: ffffffff842fa7b5 R09: 0000000037d56931
R10: 00007ffcc639e0b8 R11: 000000000000e8be R12: 00007f99ab3a0000
R13: 0000000000000001 R14: 00000000000151ff R15: ffffffff842fa7b5
FS:  0000555556d4c400 GS:  0000000000000000