syz.4.333 (7482): drop_caches: 2
list_del corruption, ffff88801eed5e90->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:56!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 7482 Comm: syz.4.333 Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__list_del_entry_valid_or_report+0x108/0x1c0 lib/list_debug.c:56
Code: c7 c7 a0 9d b0 8b e8 97 a2 e1 fc 90 0f 0b 48 c7 c7 00 9e b0 8b e8 88 a2 e1 fc 90 0f 0b 48 c7 c7 60 9e b0 8b e8 79 a2 e1 fc 90 <0f> 0b 48 89 ca 48 c7 c7 c0 9e b0 8b e8 67 a2 e1 fc 90 0f 0b 48 89
RSP: 0018:ffffc900034d7988 EFLAGS: 00010282
RAX: 000000000000004e RBX: ffff88801eed5dd0 RCX: ffffc9000a015000
RDX: 0000000000000000 RSI: ffffffff816b9846 RDI: 0000000000000005
RBP: ffff888016f78800 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88807d05b830
R13: 0000000000000005 R14: ffff88801eed5e90 R15: ffff88801eed5e98
FS:  00007f27855ff6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c420e22 CR3: 00000000585ea000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [inline]
 p9_fd_cancelled+0xa2/0x2a0 net/9p/trans_fd.c:736
 p9_client_flush.isra.0+0x34b/0x420 net/9p/client.c:618
 p9_client_rpc+0xaef/0xc10 net/9p/client.c:741
 p9_client_getattr_dotl+0xba/0x1e0 net/9p/client.c:1783
 v9fs_fid_iget_dotl+0x1e3/0x390 fs/9p/vfs_inode_dotl.c:86
 v9fs_get_inode_from_fid fs/9p/v9fs.h:231 [inline]
 v9fs_mount+0x518/0xa50 fs/9p/vfs_super.c:142
 legacy_get_tree+0x109/0x220 fs/fs_context.c:662
 vfs_get_tree+0x8f/0x380 fs/super.c:1800
 do_new_mount fs/namespace.c:3472 [inline]
 path_mount+0x14e6/0x1f20 fs/namespace.c:3799
 do_mount fs/namespace.c:3812 [inline]
 __do_sys_mount fs/namespace.c:4020 [inline]
 __se_sys_mount fs/namespace.c:3997 [inline]
 __x64_sys_mount+0x294/0x320 fs/namespace.c:3997
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2785b79e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f27855ff038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2785d16130 RCX: 00007f2785b79e79
RDX: 0000000020000b80 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f2785be793e R08: 0000000020000280 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2785d16130 R15: 00007ffcebd90108
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x108/0x1c0 lib/list_debug.c:56
Code: c7 c7 a0 9d b0 8b e8 97 a2 e1 fc 90 0f 0b 48 c7 c7 00 9e b0 8b e8 88 a2 e1 fc 90 0f 0b 48 c7 c7 60 9e b0 8b e8 79 a2 e1 fc 90 <0f> 0b 48 89 ca 48 c7 c7 c0 9e b0 8b e8 67 a2 e1 fc 90 0f 0b 48 89
RSP: 0018:ffffc900034d7988 EFLAGS: 00010282
RAX: 000000000000004e RBX: ffff88801eed5dd0 RCX: ffffc9000a015000
RDX: 0000000000000000 RSI: ffffffff816b9846 RDI: 0000000000000005
RBP: ffff888016f78800 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88807d05b830
R13: 0000000000000005 R14: ffff88801eed5e90 R15: ffff88801eed5e98
FS:  00007f27855ff6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c420e22 CR3: 00000000585ea000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400