syzbot

RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f18132cd4c9
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000200000000340 R09: 0000000000000000
R10: 0000000001004040 R11: 0000000000000246 R12: 00007fff9357b71c
R13: 00007fff9357b750 R14: 00007fff9357b730 R15: 0000000000000002
---[ end trace 22e8215b3dad6f80 ]---
list_del corruption. prev->next should be ffff88812185e800, but was ffff88812185ec50
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 302 Comm: syz-executor356 Tainted: G        W         5.10.240-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 86 cd 31 02 0f 0b 48 c7 c7 00 1d 20 85 48 89 de e8 75 cd 31 02 0f 0b 48 c7 c7 60 1d 20 85 48 89 de e8 64 cd 31 02 <0f> 0b 48 c7 c7 c0 1d 20 85 48 89 de e8 53 cd 31 02 0f 0b 00 55 48
RSP: 0018:ffffc90000c77478 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff88812185e800 RCX: df1a0ee4da6cca00
RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000
RBP: ffffc90000c77498 R08: dffffc0000000000 R09: fffff5200018edc5
R10: fffff5200018edc5 R11: 1ffff9200018edc4 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88812185ec50 R15: ffff8881218346f0
FS:  0000555562a1e380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555562a1e650 CR3: 00000001098c8000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 dentry_unlist fs/dcache.c:526 [inline]
 __dentry_kill+0x24c/0x650 fs/dcache.c:579
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 path_put+0x39/0x60 fs/namei.c:499
 dentry_release+0x4f/0xa0 fs/incfs/vfs.c:1591
 __dentry_kill+0x4b5/0x650 fs/dcache.c:588
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 path_put+0x39/0x60 fs/namei.c:499
 dentry_release+0x4f/0xa0 fs/incfs/vfs.c:1591
 __dentry_kill+0x4b5/0x650 fs/dcache.c:588
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 ovl_workdir_create+0x22e/0x530 fs/overlayfs/super.c:765
 ovl_make_workdir fs/overlayfs/super.c:1321 [inline]
 ovl_get_workdir+0x33b/0xd40 fs/overlayfs/super.c:1458
 ovl_fill_super+0x169b/0x25f0 fs/overlayfs/super.c:1998
 mount_nodev+0x5c/0xf0 fs/super.c:1488
 ovl_mount+0x2c/0x40 fs/overlayfs/super.c:2082
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:2919
 path_mount+0x572/0xc80 fs/namespace.c:3249
 do_mount fs/namespace.c:3262 [inline]
 __do_sys_mount fs/namespace.c:3470 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3447
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3447
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f18132cd4c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1a 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff9357b6f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f18132cd4c9
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000200000000340 R09: 0000000000000000
R10: 0000000001004040 R11: 0000000000000246 R12: 00007fff9357b71c
R13: 00007fff9357b750 R14: 00007fff9357b730 R15: 0000000000000002
Modules linked in:
---[ end trace 22e8215b3dad6f81 ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 86 cd 31 02 0f 0b 48 c7 c7 00 1d 20 85 48 89 de e8 75 cd 31 02 0f 0b 48 c7 c7 60 1d 20 85 48 89 de e8 64 cd 31 02 <0f> 0b 48 c7 c7 c0 1d 20 85 48 89 de e8 53 cd 31 02 0f 0b 00 55 48
RSP: 0018:ffffc90000c77478 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff88812185e800 RCX: df1a0ee4da6cca00
RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000
RBP: ffffc90000c77498 R08: dffffc0000000000 R09: fffff5200018edc5
R10: fffff5200018edc5 R11: 1ffff9200018edc4 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88812185ec50 R15: ffff8881218346f0
FS:  0000555562a1e380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555562a1e650 CR3: 00000001098c8000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400