list_del corruption, ffff8881e15f3be0->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:55!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3277 Comm: syz-executor.2 Not tainted 5.4.219-syzkaller-00097-ga76dfbc99260 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__list_del_entry_valid+0xef/0x130 lib/list_debug.c:53
Code: ae 30 18 02 0f 0b 48 c7 c7 80 42 fe 84 4c 89 f6 31 c0 e8 9b 30 18 02 0f 0b 48 c7 c7 e0 42 fe 84 4c 89 f6 31 c0 e8 88 30 18 02 <0f> 0b 48 c7 c7 40 43 fe 84 4c 89 f6 31 c0 e8 75 30 18 02 0f 0b 48
RSP: 0018:ffff8881e4b4f438 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: c85fa7b3ff0a2f00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000005 R08: ffffffff814e3a77 R09: ffffed103edcaa08
R10: ffffed103edcaa08 R11: 1ffff1103edcaa07 R12: dffffc0000000000
R13: ffff8881e15f3b60 R14: ffff8881e15f3be0 R15: dead000000000122
FS:  00007f6ed1ca7700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020e7207f CR3: 00000001eb9f6000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:131 [inline]
 list_del include/linux/list.h:139 [inline]
 p9_fd_cancelled+0x71/0x1b0 net/9p/trans_fd.c:722
 p9_client_flush+0x37b/0x570 net/9p/client.c:677
 p9_client_rpc+0x83e/0xae0 net/9p/client.c:784
 p9_client_version+0x179/0x710 net/9p/client.c:942
 p9_client_create+0x8a1/0xb60 net/9p/client.c:1052
 v9fs_session_init+0x1f0/0x17d0 fs/9p/v9fs.c:406
 v9fs_mount+0x72/0x770 fs/9p/vfs_super.c:124
 legacy_get_tree+0xde/0x170 fs/fs_context.c:647
 vfs_get_tree+0x85/0x260 fs/super.c:1547
 do_new_mount+0x299/0x580 fs/namespace.c:2843
 do_mount+0x6ac/0xe10 fs/namespace.c:3163
 ksys_mount+0xc2/0xf0 fs/namespace.c:3372
 __do_sys_mount fs/namespace.c:3386 [inline]
 __se_sys_mount fs/namespace.c:3383 [inline]
 __x64_sys_mount+0xb1/0xc0 fs/namespace.c:3383
 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Modules linked in:
---[ end trace 0510fdc060feacb9 ]---
RIP: 0010:__list_del_entry_valid+0xef/0x130 lib/list_debug.c:53
Code: ae 30 18 02 0f 0b 48 c7 c7 80 42 fe 84 4c 89 f6 31 c0 e8 9b 30 18 02 0f 0b 48 c7 c7 e0 42 fe 84 4c 89 f6 31 c0 e8 88 30 18 02 <0f> 0b 48 c7 c7 40 43 fe 84 4c 89 f6 31 c0 e8 75 30 18 02 0f 0b 48
RSP: 0018:ffff8881e4b4f438 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: c85fa7b3ff0a2f00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000005 R08: ffffffff814e3a77 R09: ffffed103edcaa08
R10: ffffed103edcaa08 R11: 1ffff1103edcaa07 R12: dffffc0000000000
R13: ffff8881e15f3b60 R14: ffff8881e15f3be0 R15: dead000000000122
FS:  00007f6ed1ca7700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020e7207f CR3: 00000001eb9f6000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400