------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:2880!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 5860 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:_ocfs2_free_suballoc_bits+0x250d/0x2780 fs/ocfs2/suballoc.c:2880
Code: fe e9 3e f3 ff ff e8 c2 ca f9 fd 48 c7 c7 80 14 ef 8e 48 8b 74 24 68 4c 89 fa e8 ee 2f 22 01 e9 4c f3 ff ff e8 a4 ca f9 fd 90 <0f> 0b e8 9c ca f9 fd 90 0f 0b 4c 89 7c 24 08 65 8b 1d 01 2c 74 0f
RSP: 0018:ffffc900036975a0 EFLAGS: 00010293
RAX: ffffffff83cbf41c RBX: 0000000000000001 RCX: ffff88807a645c40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003697808 R08: 0000000000000020 R09: 00000000000000ff
R10: dffffc0000000000 R11: fffffbfff2066a7f R12: ffff88806e252ea8
R13: ffff888034a53420 R14: ffff88807e349e00 R15: 1ffff920006d2ec8
FS:  000055555f06f500(0000) GS:ffff88812531e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2a30d854c0 CR3: 000000005cf89000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 _ocfs2_free_clusters+0x5c2/0xa80 fs/ocfs2/suballoc.c:2998
 ocfs2_sync_local_to_main+0x52f/0xbf0 fs/ocfs2/localalloc.c:989
 ocfs2_shutdown_local_alloc+0x6e8/0xa40 fs/ocfs2/localalloc.c:447
 ocfs2_dismount_volume+0x1ec/0x8d0 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:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:328 [inline]
 do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f464319da57
Code: a2 c7 05 9c fc 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:00007ffc02f94df8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f4643232048 RCX: 00007f464319da57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc02f94eb0
RBP: 00007ffc02f94eb0 R08: 00007ffc02f95eb0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc02f95f40
R13: 00007f4643232048 R14: 0000000000026a2b R15: 00007ffc02f95f80
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_ocfs2_free_suballoc_bits+0x250d/0x2780 fs/ocfs2/suballoc.c:2880
Code: fe e9 3e f3 ff ff e8 c2 ca f9 fd 48 c7 c7 80 14 ef 8e 48 8b 74 24 68 4c 89 fa e8 ee 2f 22 01 e9 4c f3 ff ff e8 a4 ca f9 fd 90 <0f> 0b e8 9c ca f9 fd 90 0f 0b 4c 89 7c 24 08 65 8b 1d 01 2c 74 0f
RSP: 0018:ffffc900036975a0 EFLAGS: 00010293
RAX: ffffffff83cbf41c RBX: 0000000000000001 RCX: ffff88807a645c40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003697808 R08: 0000000000000020 R09: 00000000000000ff
R10: dffffc0000000000 R11: fffffbfff2066a7f R12: ffff88806e252ea8
R13: ffff888034a53420 R14: ffff88807e349e00 R15: 1ffff920006d2ec8
FS:  000055555f06f500(0000) GS:ffff88812521e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff4113a8000 CR3: 000000005cf89000 CR4: 0000000000350ef0