------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:2871!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 8725 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:_ocfs2_free_suballoc_bits+0x2689/0x27a0 fs/ocfs2/suballoc.c:2871
Code: fe 48 8b 74 24 18 e9 41 ea ff ff 89 f9 80 e1 07 fe c1 38 c1 0f 8c 22 f5 ff ff e8 02 45 6b fe e9 18 f5 ff ff e8 d8 2c 05 fe 90 <0f> 0b e8 d0 2c 05 fe e9 e8 00 00 00 44 89 f1 80 e1 07 fe c1 38 c1
RSP: 0018:ffffc9000739f5a0 EFLAGS: 00010293
RAX: ffffffff83bf2338 RBX: 00000000000001ff RCX: ffff888025228000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000739f808 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1ed49d7 R12: 0000000000000315
R13: ffff88805ed20000 R14: ffff88801180a000 R15: dffffc0000000000
FS:  0000555563c4f500(0000) GS:ffff88812643d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555563c6aa28 CR3: 00000000400f2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 _ocfs2_free_clusters+0x5c2/0xab0 fs/ocfs2/suballoc.c:2973
 ocfs2_sync_local_to_main+0x541/0xc70 fs/ocfs2/localalloc.c:989
 ocfs2_shutdown_local_alloc+0x6e8/0xa40 fs/ocfs2/localalloc.c:447
 ocfs2_dismount_volume+0x1ec/0x900 fs/ocfs2/super.c:1825
 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646
 kill_block_super+0x44/0x90 fs/super.c:1725
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1f5e95d9d7
Code: a2 c7 05 1c ed 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc73ecb988 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f1f5e9f1f90 RCX: 00007f1f5e95d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc73ecba40
RBP: 00007ffc73ecba40 R08: 00007ffc73ecca40 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc73eccad0
R13: 00007f1f5e9f1f90 R14: 000000000004d1f7 R15: 00007ffc73eccb10
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_ocfs2_free_suballoc_bits+0x2689/0x27a0 fs/ocfs2/suballoc.c:2871
Code: fe 48 8b 74 24 18 e9 41 ea ff ff 89 f9 80 e1 07 fe c1 38 c1 0f 8c 22 f5 ff ff e8 02 45 6b fe e9 18 f5 ff ff e8 d8 2c 05 fe 90 <0f> 0b e8 d0 2c 05 fe e9 e8 00 00 00 44 89 f1 80 e1 07 fe c1 38 c1
RSP: 0018:ffffc9000739f5a0 EFLAGS: 00010293
RAX: ffffffff83bf2338 RBX: 00000000000001ff RCX: ffff888025228000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000739f808 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1ed49d7 R12: 0000000000000315
R13: ffff88805ed20000 R14: ffff88801180a000 R15: dffffc0000000000
FS:  0000555563c4f500(0000) GS:ffff88812643d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555563c6aa28 CR3: 00000000400f2000 CR4: 00000000003526f0