------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:2871!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 16882 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:_ocfs2_free_suballoc_bits+0x2689/0x27a0
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 12 52 66 fe e9 18 f5 ff ff e8 f8 ff fb fd 90 <0f> 0b e8 f0 ff fb fd e9 e8 00 00 00 44 89 f1 80 e1 07 fe c1 38 c1
RSP: 0018:ffffc90006e5f5a0 EFLAGS: 00010293
RAX: ffffffff83c9bff8 RBX: 00000000000001ff RCX: ffff88816b003a80
RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000000000315
RBP: ffffc90006e5f808 R08: ffffffff9011d8b7 R09: 1ffffffff2023b16
R10: dffffc0000000000 R11: fffffbfff2023b17 R12: 0000000000000315
R13: ffff8881b8aee580 R14: ffff8881114fe000 R15: dffffc0000000000
FS:  0000555566f65500(0000) GS:ffff8882a9454000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555566f80a28 CR3: 00000001a461e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 _ocfs2_free_clusters+0x5c2/0xab0
 ocfs2_sync_local_to_main+0x541/0xc70
 ocfs2_shutdown_local_alloc+0x6e8/0xa40
 ocfs2_dismount_volume+0x1ec/0x900
 generic_shutdown_super+0x13d/0x2d0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa39af9da57
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:00007ffc4909e7e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fa39b032048 RCX: 00007fa39af9da57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc4909e8a0
RBP: 00007ffc4909e8a0 R08: 00007ffc4909f8a0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc4909f930
R13: 00007fa39b032048 R14: 00000000000833c9 R15: 00007ffc4909f970
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_ocfs2_free_suballoc_bits+0x2689/0x27a0
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 12 52 66 fe e9 18 f5 ff ff e8 f8 ff fb fd 90 <0f> 0b e8 f0 ff fb fd e9 e8 00 00 00 44 89 f1 80 e1 07 fe c1 38 c1
RSP: 0018:ffffc90006e5f5a0 EFLAGS: 00010293
RAX: ffffffff83c9bff8 RBX: 00000000000001ff RCX: ffff88816b003a80
RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000000000315
RBP: ffffc90006e5f808 R08: ffffffff9011d8b7 R09: 1ffffffff2023b16
R10: dffffc0000000000 R11: fffffbfff2023b17 R12: 0000000000000315
R13: ffff8881b8aee580 R14: ffff8881114fe000 R15: dffffc0000000000
FS:  0000555566f65500(0000) GS:ffff8882a9454000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005608e512f000 CR3: 00000001a461e000 CR4: 00000000000006f0
