------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1387!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4251 Comm: syz.3.7 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1387 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x2355/0x24b0 fs/ocfs2/suballoc.c:1927
Code: 86 fa ff ff e8 6c c8 33 fe 0f 0b e8 65 c8 33 fe 0f 0b e8 5e c8 33 fe 0f 0b e8 57 c8 33 fe 0f 0b e8 10 92 f2 06 e8 4b c8 33 fe <0f> 0b e8 44 c8 33 fe 0f 0b 65 8b 1d 03 58 b5 7c bf 07 00 00 00 89
RSP: 0018:ffffc900031cf260 EFLAGS: 00010283
RAX: ffffffff834cbd45 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000dc41000 RSI: 000000000001ccdb RDI: 000000000001ccdc
RBP: ffffc900031cf510 R08: ffffffff834ca7c3 R09: ffffc900031cf5a0
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888018fe5388 R14: dffffc0000000000 R15: 0000000000000001
FS:  00007fe60c6b96c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f50685136c0 CR3: 000000001f2ce000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_claim_new_inode+0x32b/0x850 fs/ocfs2/suballoc.c:2210
 ocfs2_mknod_locked+0x176/0x3a0 fs/ocfs2/namei.c:635
 ocfs2_mknod+0x187f/0x2cd0 fs/ocfs2/namei.c:381
 ocfs2_mkdir+0x194/0x430 fs/ocfs2/namei.c:657
 vfs_mkdir+0x3b6/0x590 fs/namei.c:4065
 do_mkdirat+0x260/0x520 fs/namei.c:4090
 __do_sys_mkdirat fs/namei.c:4105 [inline]
 __se_sys_mkdirat fs/namei.c:4103 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4103
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe60e84e9d7
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 02 01 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:00007fe60c6b8e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fe60c6b8ef0 RCX: 00007fe60e84e9d7
RDX: 00000000000001ff RSI: 0000400000002080 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000400000002080
R13: 00007fe60c6b8eb0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace d1ecb3e1b74f6c8d ]---
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1387 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x2355/0x24b0 fs/ocfs2/suballoc.c:1927
Code: 86 fa ff ff e8 6c c8 33 fe 0f 0b e8 65 c8 33 fe 0f 0b e8 5e c8 33 fe 0f 0b e8 57 c8 33 fe 0f 0b e8 10 92 f2 06 e8 4b c8 33 fe <0f> 0b e8 44 c8 33 fe 0f 0b 65 8b 1d 03 58 b5 7c bf 07 00 00 00 89
RSP: 0018:ffffc900031cf260 EFLAGS: 00010283
RAX: ffffffff834cbd45 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000dc41000 RSI: 000000000001ccdb RDI: 000000000001ccdc
RBP: ffffc900031cf510 R08: ffffffff834ca7c3 R09: ffffc900031cf5a0
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888018fe5388 R14: dffffc0000000000 R15: 0000000000000001
FS:  00007fe60c6b96c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000001f2ce000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400