------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:2478!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4270 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:_ocfs2_free_suballoc_bits+0xeb5/0x11e0 fs/ocfs2/suballoc.c:2478
Code: 49 89 ce 45 89 c7 e8 7a 7f 85 fe 48 8b 74 24 40 45 89 f8 4c 89 f1 49 be 00 00 00 00 00 fc ff df e9 7f fa ff ff e8 3b 73 34 fe <0f> 0b e8 34 73 34 fe 0f 0b 65 44 8b 25 1a 06 b4 7c 48 c7 c0 f0 fd
RSP: 0018:ffffc90004257720 EFLAGS: 00010293
RAX: ffffffff834e1375 RBX: 0000000000000001 RCX: ffff88802fcb0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900042578a8 R08: 0000000000000020 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c3ff7e R12: ffff888074006e00
R13: 0000000000000020 R14: dffffc0000000000 R15: ffff88807376a268
FS:  000055555c2f7500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc8eda61440 CR3: 000000005c642000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 _ocfs2_free_clusters+0x5fd/0xaf0 fs/ocfs2/suballoc.c:2579
 ocfs2_replay_truncate_records fs/ocfs2/alloc.c:5971 [inline]
 __ocfs2_flush_truncate_log+0x755/0x1220 fs/ocfs2/alloc.c:6054
 ocfs2_flush_truncate_log+0x4b/0x60 fs/ocfs2/alloc.c:6076
 ocfs2_sync_fs+0x119/0x330 fs/ocfs2/super.c:402
 sync_filesystem+0x1be/0x220 fs/sync.c:66
 generic_shutdown_super+0x6b/0x340 fs/super.c:474
 kill_block_super+0x7c/0xe0 fs/super.c:1470
 deactivate_locked_super+0x93/0xf0 fs/super.c:332
 cleanup_mnt+0x42c/0x4b0 fs/namespace.c:1191
 task_work_run+0x1d0/0x260 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5942b9e097
Code: a2 c7 05 5c 06 25 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:00007ffc3f9924f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f5942c321ca RCX: 00007f5942b9e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc3f9925b0
RBP: 00007ffc3f9925b0 R08: 00007ffc3f9935b0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc3f993640
R13: 00007f5942c321ca R14: 0000000000016c09 R15: 00007ffc3f993680
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_ocfs2_free_suballoc_bits+0xeb5/0x11e0 fs/ocfs2/suballoc.c:2478
Code: 49 89 ce 45 89 c7 e8 7a 7f 85 fe 48 8b 74 24 40 45 89 f8 4c 89 f1 49 be 00 00 00 00 00 fc ff df e9 7f fa ff ff e8 3b 73 34 fe <0f> 0b e8 34 73 34 fe 0f 0b 65 44 8b 25 1a 06 b4 7c 48 c7 c0 f0 fd
RSP: 0018:ffffc90004257720 EFLAGS: 00010293
RAX: ffffffff834e1375 RBX: 0000000000000001 RCX: ffff88802fcb0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900042578a8 R08: 0000000000000020 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c3ff7e R12: ffff888074006e00
R13: 0000000000000020 R14: dffffc0000000000 R15: ffff88807376a268
FS:  000055555c2f7500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8cad3f2b60 CR3: 000000005c642000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400