syzbot

RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007f5d12208c1f R08: 0000200000000340 R09: 0000000000000000
R10: 0000000001004040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5d12415fac R14: 00007f5d12415fa0 R15: 00007f5d12415fa0
 </TASK>
---[ end trace 0000000000000000 ]---
list_del corruption. prev->next should be ffff888123157a20, but was ffff888111588c40. (prev=ffff888123159800)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 432 Comm: syz.1.30 Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__list_del_entry_valid+0x10f/0x130 lib/list_debug.c:59
Code: e8 2e 4a 88 02 0f 0b 48 c7 c7 00 76 ca 85 48 89 de e8 1d 4a 88 02 0f 0b 48 c7 c7 60 76 ca 85 48 89 de 4c 89 f9 e8 09 4a 88 02 <0f> 0b 48 c7 c7 e0 76 ca 85 48 89 de 4c 89 f1 e8 f5 49 88 02 0f 0b
RSP: 0018:ffffc90000e87378 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffff888123157a20 RCX: 2869bba1fbe78300
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000e87398 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001d0dc0 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888111588c40 R15: ffff888123159800
FS:  000055557c06e500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006ff7000 CR3: 000000012ebe7000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:134 [inline]
 dentry_unlist fs/dcache.c:554 [inline]
 __dentry_kill+0x25d/0x670 fs/dcache.c:607
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:918
 path_put+0x39/0x60 fs/namei.c:560
 dentry_release+0x4f/0xa0 fs/incfs/vfs.c:1614
 __dentry_kill+0x4d4/0x670 fs/dcache.c:616
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:918
 path_put+0x39/0x60 fs/namei.c:560
 dentry_release+0x4f/0xa0 fs/incfs/vfs.c:1614
 __dentry_kill+0x4d4/0x670 fs/dcache.c:616
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:918
 ovl_workdir_create+0x2aa/0x6d0 fs/overlayfs/super.c:812
 ovl_make_workdir fs/overlayfs/super.c:1410 [inline]
 ovl_get_workdir+0x3bd/0x14e0 fs/overlayfs/super.c:1560
 ovl_fill_super+0x18c2/0x2a20 fs/overlayfs/super.c:2116
 mount_nodev+0x6a/0x100 fs/super.c:1491
 ovl_mount+0x2c/0x40 fs/overlayfs/super.c:2206
 legacy_get_tree+0xfe/0x1a0 fs/fs_context.c:632
 vfs_get_tree+0x9a/0x270 fs/super.c:1575
 do_new_mount+0x25a/0xa20 fs/namespace.c:3078
 path_mount+0x659/0xfc0 fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3606
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3606
 x64_sys_call+0x65d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5d1219aeb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc11a72f38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f5d12415fa0 RCX: 00007f5d1219aeb9
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000
RBP: 00007f5d12208c1f R08: 0000200000000340 R09: 0000000000000000
R10: 0000000001004040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5d12415fac R14: 00007f5d12415fa0 R15: 00007f5d12415fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid+0x10f/0x130 lib/list_debug.c:59
Code: e8 2e 4a 88 02 0f 0b 48 c7 c7 00 76 ca 85 48 89 de e8 1d 4a 88 02 0f 0b 48 c7 c7 60 76 ca 85 48 89 de 4c 89 f9 e8 09 4a 88 02 <0f> 0b 48 c7 c7 e0 76 ca 85 48 89 de 4c 89 f1 e8 f5 49 88 02 0f 0b
RSP: 0018:ffffc90000e87378 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffff888123157a20 RCX: 2869bba1fbe78300
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000e87398 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001d0dc0 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888111588c40 R15: ffff888123159800
FS:  000055557c06e500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006ff7000 CR3: 000000012ebe7000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400