syzbot

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kernel BUG at fs/ocfs2/suballoc.c:2484!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4284 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:_ocfs2_free_suballoc_bits+0xe9c/0x1060 fs/ocfs2/suballoc.c:2484
Code: ff e8 48 fa 99 fe 49 8b 3f 4c 89 f6 48 8b 54 24 20 48 8b 4c 24 40 4c 8b 44 24 18 e8 8e 8c 00 00 e9 27 01 00 00 e8 04 92 55 fe <0f> 0b e8 fd 91 55 fe 0f 0b 65 44 8b 35 3b db df 7c bf 07 00 00 00
RSP: 0018:ffffc900012ff360 EFLAGS: 00010293
RAX: ffffffff83223a0c RBX: 1ffff1100dec6000 RCX: ffff88802be1bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900012ff4e8 R08: dffffc0000000000 R09: fffffbfff1ad33a6
R10: fffffbfff1ad33a6 R11: 1ffffffff1ad33a5 R12: ffff88806f630878
R13: 0000000000000002 R14: 0000000000000000 R15: ffff88805f1a9000
FS:  0000555595497500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f42f54000 CR3: 000000002348c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_free_suballoc_bits fs/ocfs2/suballoc.c:2521 [inline]
 ocfs2_free_dinode+0xad/0xd0 fs/ocfs2/suballoc.c:2536
 ocfs2_remove_inode fs/ocfs2/inode.c:696 [inline]
 ocfs2_wipe_inode fs/ocfs2/inode.c:818 [inline]
 ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline]
 ocfs2_evict_inode+0x1b49/0x3e40 fs/ocfs2/inode.c:1216
 evict+0x485/0x870 fs/inode.c:647
 d_delete_notify include/linux/fsnotify.h:267 [inline]
 vfs_rmdir+0x3b4/0x430 fs/namei.c:4170
 do_rmdir+0x295/0x710 fs/namei.c:4218
 __do_sys_unlinkat fs/namei.c:4398 [inline]
 __se_sys_unlinkat fs/namei.c:4392 [inline]
 __x64_sys_unlinkat+0xc0/0xe0 fs/namei.c:4392
 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: 0033:0x7f797021c5a7
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 07 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:00007fff81392518 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f797021c5a7
RDX: 0000000000000200 RSI: 00007fff813936c0 RDI: 00000000ffffff9c
RBP: 00007f797029fd7d R08: 00005555954ba66b R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000207 R12: 00007fff813936c0
R13: 00007f797029fd7d R14: 0000000000015044 R15: 00007fff81395880
 </TASK>
Modules linked in:
---[ end trace 6359f198cee7178e ]---
RIP: 0010:_ocfs2_free_suballoc_bits+0xe9c/0x1060 fs/ocfs2/suballoc.c:2484
Code: ff e8 48 fa 99 fe 49 8b 3f 4c 89 f6 48 8b 54 24 20 48 8b 4c 24 40 4c 8b 44 24 18 e8 8e 8c 00 00 e9 27 01 00 00 e8 04 92 55 fe <0f> 0b e8 fd 91 55 fe 0f 0b 65 44 8b 35 3b db df 7c bf 07 00 00 00
RSP: 0018:ffffc900012ff360 EFLAGS: 00010293
RAX: ffffffff83223a0c RBX: 1ffff1100dec6000 RCX: ffff88802be1bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900012ff4e8 R08: dffffc0000000000 R09: fffffbfff1ad33a6
R10: fffffbfff1ad33a6 R11: 1ffffffff1ad33a5 R12: ffff88806f630878
R13: 0000000000000002 R14: 0000000000000000 R15: ffff88805f1a9000
FS:  0000555595497500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006c07000 CR3: 000000002348c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400