INFO: task syz-executor.2:23018 blocked for more than 149 seconds.
      Not tainted 6.0.0-syzkaller-07994-ge8bc52cb8df8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:26872 pid:23018 ppid:  3639 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5183 [inline]
 __schedule+0x957/0xe20 kernel/sched/core.c:6495
 schedule+0xcb/0x190 kernel/sched/core.c:6571
 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:885 [inline]
 p9_fd_close+0x24d/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: 0033:0x7f4c0988a5a9
RSP: 002b:00007f4c087fe168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4c099ac050 RCX: 00007f4c0988a5a9
RDX: 00000000200001c0 RSI: 0000000020000180 RDI: 0000000000000000
RBP: 00007f4c098e5580 R08: 0000000020000200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeb28dc25f R14: 00007f4c087fe300 R15: 0000000000022000
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.0.0-syzkaller-07994-ge8bc52cb8df8 #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:212 [inline]
 watchdog+0xcd5/0xd20 kernel/hung_task.c:369
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3640 Comm: syz-executor.1 Not tainted 6.0.0-syzkaller-07994-ge8bc52cb8df8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:114 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x1c3/0x2e0 mm/kasan/generic.c:189
Code: 85 f6 49 0f 49 de 48 c1 fb 03 85 db 74 31 49 bb f8 ff ff ff 07 00 00 00 49 8d 2c db 4c 21 dd 4e 8d 7c 0d 08 0f 1f 00 4d 8b 19 <4d> 85 db 75 3d 49 83 c1 08 ff cb 75 f0 4d 29 fa 4d 89 d6 eb 03 4d
RSP: 0018:ffffc90003fcfd78 EFLAGS: 00000202
RAX: 1ffff920007f9f01 RBX: 0000000000000001 RCX: ffffffff81518a0a
RDX: 0000000000000001 RSI: 0000000000000090 RDI: ffffc90003fcfe00
RBP: 0000000000000008 R08: dffffc0000000000 R09: fffff520007f9fc8
R10: fffff520007f9fd2 R11: 0000000000000000 R12: 1ffff920007f9fbc
R13: 0000000040000001 R14: 0000000000000012 R15: fffff520007f9fd0
FS:  000055555706c400(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0170f7c00 CR3: 000000003a824000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 memset+0x1f/0x40 mm/kasan/shadow.c:44
 __do_sys_wait4 kernel/exit.c:1708 [inline]
 __se_sys_wait4 kernel/exit.c:1705 [inline]
 __x64_sys_wait4+0x10a/0x1e0 kernel/exit.c:1705
 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: 0033:0x7f3df9e88157
Code: 89 7c 24 10 48 89 4c 24 18 e8 25 59 02 00 4c 8b 54 24 18 8b 54 24 14 41 89 c0 48 8b 74 24 08 8b 7c 24 10 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 10 e8 55 59 02 00 8b 44
RSP: 002b:00007ffd2bab7e90 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00000000000007fa RCX: 00007f3df9e88157
RDX: 0000000040000001 RSI: 00007ffd2bab7f1c RDI: 00000000ffffffff
RBP: 00007ffd2bab7f1c R08: 0000000000000000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000000cd9ab R14: 0000000000000010 R15: 00007ffd2bab7f80
 </TASK>