------------[ cut here ]------------
WARNING: CPU: 0 PID: 14315 at lib/list_debug.c:53 __list_del_entry+0x111/0x1c0 lib/list_debug.c:51
list_del corruption, ffff8801a83dc028->next is LIST_POISON1 (dead000000000100)
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 14315 Comm: syz-executor999 Not tainted 4.9.111-g03c70fe #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a83f7450 ffffffff81eb2729 ffffffff83c48980 00000000ffffffff
 0000000000000000 0000000000000000 0000000000000035 ffff8801a83f7510
 ffffffff814219f5 0000000041b58ab3 ffffffff843ba8c0 ffffffff81421836
Call Trace:
 [<ffffffff81eb2729>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb2729>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff814219f5>] panic+0x1bf/0x3bc kernel/panic.c:179
 [<ffffffff81421ce1>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff81136672>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:565
 [<ffffffff81f1a5d1>] __list_del_entry+0x111/0x1c0 lib/list_debug.c:51
 [<ffffffff81f1a68d>] list_del+0xd/0x70 lib/list_debug.c:77
 [<ffffffff839c14f9>] p9_fd_cancel+0x69/0xb0 net/9p/trans_fd.c:700
 [<ffffffff839b11e1>] p9_client_rpc+0x9e1/0x1140 net/9p/client.c:776
 [<ffffffff839b34f1>] p9_client_version net/9p/client.c:950 [inline]
 [<ffffffff839b34f1>] p9_client_create+0x951/0x10a0 net/9p/client.c:1043
 [<ffffffff8195ab03>] v9fs_session_init+0x333/0x13a0 fs/9p/v9fs.c:343
 [<ffffffff8194c3fd>] v9fs_mount+0x7d/0x810 fs/9p/vfs_super.c:130
 [<ffffffff8157e22c>] mount_fs+0x28c/0x370 fs/super.c:1206
 [<ffffffff815dd9f1>] vfs_kern_mount.part.29+0xd1/0x3d0 fs/namespace.c:991
 [<ffffffff815e5319>] vfs_kern_mount fs/namespace.c:973 [inline]
 [<ffffffff815e5319>] do_new_mount fs/namespace.c:2513 [inline]
 [<ffffffff815e5319>] do_mount+0x3c9/0x2740 fs/namespace.c:2835
 [<ffffffff815e806e>] SYSC_mount fs/namespace.c:3051 [inline]
 [<ffffffff815e806e>] SyS_mount+0xfe/0x110 fs/namespace.c:3028
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f8cd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..