------------[ cut here ]------------
kernel BUG at fs/reiserfs/item_ops.c:569!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4490 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:direntry_check_right+0x262/0x270 fs/reiserfs/item_ops.c:569
Code: e9 4b ff ff ff 44 89 f9 80 e1 07 38 c1 0f 8c 51 ff ff ff be 04 00 00 00 4c 89 ff e8 38 87 bc ff e9 3f ff ff ff e8 3e 20 78 ff <0f> 0b e8 37 20 78 ff 0f 0b 0f 1f 44 00 00 55 41 57 41 56 41 55 41
RSP: 0018:ffffc900034af2b8 EFLAGS: 00010293
RAX: ffffffff81ffaa72 RBX: dffffc0000000000 RCX: ffff888026ff8000
RDX: 0000000000000000 RSI: 0000000000000018 RDI: 000000000000002c
RBP: ffff88807e5c8106 R08: ffff888026ff8000 R09: 0000000000000002
R10: 0000000000000070 R11: 0000000000000000 R12: ffff88807e5c80fe
R13: 0000000000000018 R14: fffffffffffffffc R15: 0000000000000014
FS:  00005555666c3500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f17c943a4ac CR3: 0000000067837000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 check_right+0x4ea/0x7f0 fs/reiserfs/fix_node.c:355
 dc_check_balance_leaf fs/reiserfs/fix_node.c:1983 [inline]
 dc_check_balance fs/reiserfs/fix_node.c:2039 [inline]
 check_balance fs/reiserfs/fix_node.c:2086 [inline]
 fix_nodes+0x3dc4/0x82d0 fs/reiserfs/fix_node.c:2635
 reiserfs_cut_from_item+0x2e8/0x1ef0 fs/reiserfs/stree.c:1742
 reiserfs_unlink+0x3d7/0x6d0 fs/reiserfs/namei.c:1069
 vfs_unlink+0x385/0x600 fs/namei.c:4280
 do_unlinkat+0x382/0x6f0 fs/namei.c:4348
 __do_sys_unlink fs/namei.c:4396 [inline]
 __se_sys_unlink fs/namei.c:4394 [inline]
 __x64_sys_unlink+0x45/0x50 fs/namei.c:4394
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3c7cea2197
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 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:00007ffd5aa6c408 EFLAGS: 00000206
 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3c7cea2197
RDX: 00007ffd5aa6c430 RSI: 00007ffd5aa6c4c0 RDI: 00007ffd5aa6c4c0
RBP: 00007ffd5aa6c4c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffd5aa6d5b0
R13: 00007f3c7cf25c05 R14: 0000000000022ea1 R15: 00007ffd5aa6e680
 </TASK>
Modules linked in:
---[ end trace 330083264acb1484 ]---
RIP: 0010:direntry_check_right+0x262/0x270 fs/reiserfs/item_ops.c:569
Code: e9 4b ff ff ff 44 89 f9 80 e1 07 38 c1 0f 8c 51 ff ff ff be 04 00 00 00 4c 89 ff e8 38 87 bc ff e9 3f ff ff ff e8 3e 20 78 ff <0f> 0b e8 37 20 78 ff 0f 0b 0f 1f 44 00 00 55 41 57 41 56 41 55 41
RSP: 0018:ffffc900034af2b8 EFLAGS: 00010293
RAX: ffffffff81ffaa72 RBX: dffffc0000000000 RCX: ffff888026ff8000
RDX: 0000000000000000 RSI: 0000000000000018 RDI: 000000000000002c
RBP: ffff88807e5c8106 R08: ffff888026ff8000 R09: 0000000000000002
R10: 0000000000000070 R11: 0000000000000000 R12: ffff88807e5c80fe
R13: 0000000000000018 R14: fffffffffffffffc R15: 0000000000000014
FS:  00005555666c3500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb8270c3ad8 CR3: 0000000067837000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400