INFO: task syz-executor.4:21128 can't die for more than 143 seconds.
syz-executor.4  D27704 21128   7271 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3445 [inline]
 __schedule+0x8b4/0x1e80 kernel/sched/core.c:4169
 schedule+0xd0/0x2a0 kernel/sched/core.c:4244
 p9_client_rpc+0x3b5/0x1220 net/9p/client.c:757
 p9_client_flush+0x1f9/0x430 net/9p/client.c:665
 p9_client_rpc+0xfcd/0x1220 net/9p/client.c:782
 p9_client_version net/9p/client.c:953 [inline]
 p9_client_create+0xa8f/0x10c0 net/9p/client.c:1053
 v9fs_session_init+0x1dd/0x1770 fs/9p/v9fs.c:406
 v9fs_mount+0x79/0x970 fs/9p/vfs_super.c:124
 legacy_get_tree+0x105/0x220 fs/fs_context.c:592
 vfs_get_tree+0x89/0x2f0 fs/super.c:1558
 do_new_mount fs/namespace.c:2912 [inline]
 do_mount+0x14f6/0x1e20 fs/namespace.c:3249
 __do_sys_mount fs/namespace.c:3459 [inline]
 __se_sys_mount fs/namespace.c:3436 [inline]
 __x64_sys_mount+0x18f/0x230 fs/namespace.c:3436
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c1d9
Code: Bad RIP value.
RSP: 002b:00007fb0e6e0ac78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000001f440 RCX: 000000000045c1d9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 000000000078c090 R08: 0000000020000380 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078c04c
R13: 00007ffec64332bf R14: 00007fb0e6e0b9c0 R15: 000000000078c04c

Showing all locks held in the system:
1 lock held by khungtaskd/1161:
 #0: ffffffff89c53980 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5779
1 lock held by in:imklog/6533:
 #0: ffff888097ae2af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:930
2 locks held by kworker/u4:2/5491:
 #0: ffff8880ae735e18 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1276 [inline]
 #0: ffff8880ae735e18 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x230/0x1e80 kernel/sched/core.c:4115
 #1: ffffc9000858fda8 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x85f/0x1670 kernel/workqueue.c:2244
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