syzbot

INFO: task syz-executor.3:25626 can't die for more than 143 seconds.
task:syz-executor.3  state:D stack:25184 pid:25626 ppid:  9802 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3778 [inline]
 __schedule+0x8e5/0x21e0 kernel/sched/core.c:4527
 schedule+0xd0/0x2a0 kernel/sched/core.c:4602
 p9_client_rpc+0x3b5/0x11f0 net/9p/client.c:757
 p9_client_flush+0x1f9/0x430 net/9p/client.c:665
 p9_client_rpc+0xf93/0x11f0 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:1547
 do_new_mount fs/namespace.c:2896 [inline]
 path_mount+0x1287/0x1e20 fs/namespace.c:3214
 do_mount fs/namespace.c:3227 [inline]
 __do_sys_mount fs/namespace.c:3435 [inline]
 __se_sys_mount fs/namespace.c:3412 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3412
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d5b9
Code: Bad RIP value.
RSP: 002b:00007fb82cc3cc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000021280 RCX: 000000000045d5b9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 000000000118cf90 R08: 0000000020000380 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffcfa6b332f R14: 00007fb82cc3d9c0 R15: 000000000118cf4c

Showing all locks held in the system:
1 lock held by khungtaskd/1170:
 #0: ffffffff89c67640 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5825

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