list_del corruption, ffff8881ed2a8be0->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: 3886 Comm: syz-executor.2 Not tainted 5.4.225-syzkaller-00026-g0ed90f62b184 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__list_del_entry_valid+0xef/0x130 lib/list_debug.c:53
Code: 7e 58 18 02 0f 0b 48 c7 c7 40 4a fe 84 4c 89 f6 31 c0 e8 6b 58 18 02 0f 0b 48 c7 c7 a0 4a fe 84 4c 89 f6 31 c0 e8 58 58 18 02 <0f> 0b 48 c7 c7 00 4b fe 84 4c 89 f6 31 c0 e8 45 58 18 02 0f 0b 48
RSP: 0018:ffff8881cee97538 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: 529d43086a633700
RDX: ffffc90002556000 RSI: 0000000000016221 RDI: 0000000000016222
RBP: 0000000000000001 R08: ffffffff814e6f67 R09: ffffed103edcaa08
R10: ffffed103edcaa08 R11: 1ffff1103edcaa07 R12: dffffc0000000000
R13: ffff8881ed2a8b60 R14: ffff8881ed2a8be0 R15: dead000000000122
FS: 00007fd870374700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001d1164000 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_cancel+0x68/0x1d0 net/9p/trans_fd.c:697
p9_client_rpc+0x81f/0xae0 net/9p/client.c:783
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 8be25047c950edb3 ]---
RIP: 0010:__list_del_entry_valid+0xef/0x130 lib/list_debug.c:53
Code: 7e 58 18 02 0f 0b 48 c7 c7 40 4a fe 84 4c 89 f6 31 c0 e8 6b 58 18 02 0f 0b 48 c7 c7 a0 4a fe 84 4c 89 f6 31 c0 e8 58 58 18 02 <0f> 0b 48 c7 c7 00 4b fe 84 4c 89 f6 31 c0 e8 45 58 18 02 0f 0b 48
RSP: 0018:ffff8881cee97538 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: 529d43086a633700
RDX: ffffc90002556000 RSI: 0000000000016221 RDI: 0000000000016222
RBP: 0000000000000001 R08: ffffffff814e6f67 R09: ffffed103edcaa08
R10: ffffed103edcaa08 R11: 1ffff1103edcaa07 R12: dffffc0000000000
R13: ffff8881ed2a8b60 R14: ffff8881ed2a8be0 R15: dead000000000122
FS: 00007fd870374700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001d1164000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400