INFO: task syz-executor.3:21769 can't die for more than 143 seconds.
task:syz-executor.3  state:D stack:27448 pid:21769 ppid: 14134 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:4688 [inline]
 __schedule+0xb38/0x58c0 kernel/sched/core.c:5945
 schedule+0xcf/0x270 kernel/sched/core.c:6024
 p9_client_rpc+0x405/0x1240 net/9p/client.c:759
 p9_client_flush+0x1f9/0x430 net/9p/client.c:667
 p9_client_rpc+0xfe3/0x1240 net/9p/client.c:784
 p9_client_version net/9p/client.c:955 [inline]
 p9_client_create+0xae1/0x1110 net/9p/client.c:1055
 v9fs_session_init+0x1dd/0x17b0 fs/9p/v9fs.c:406
 v9fs_mount+0x79/0x9c0 fs/9p/vfs_super.c:126
 legacy_get_tree+0x105/0x220 fs/fs_context.c:592
 vfs_get_tree+0x89/0x2f0 fs/super.c:1498
 do_new_mount fs/namespace.c:2905 [inline]
 path_mount+0x132a/0x1fa0 fs/namespace.c:3235
 do_mount fs/namespace.c:3248 [inline]
 __do_sys_mount fs/namespace.c:3456 [inline]
 __se_sys_mount fs/namespace.c:3433 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3433
 do_syscall_64+0x31/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
RSP: 002b:00007f7d29356188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000020000200 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00000000004bfcb9 R08: 0000000020000440 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffc75afe87f R14: 00007f7d29356300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/1652:
 #0: ffffffff8c17afe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6333
1 lock held by in:imklog/8154:
 #0: ffff88802d55fc70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by agetty/8379:
 #0: ffff88802808f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:253
 #1: ffffc90000f7c2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113

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