loop0: detected capacity change from 32768 to 19616
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:2568!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:_ocfs2_free_suballoc_bits+0x107c/0x1330 fs/ocfs2/suballoc.c:2568
Code: 89 f1 e9 8f fa ff ff 44 89 f1 80 e1 07 fe c1 38 c1 0f 8c 4d fc ff ff 4c 89 f7 e8 af be 78 fe e9 40 fc ff ff e8 a5 7d 11 fe 90 <0f> 0b e8 9d 7d 11 fe 90 0f 0b f3 0f 1e fa 65 44 8b 25 52 5a c0 0e
RSP: 0018:ffffc9000d49f800 EFLAGS: 00010283
RAX: ffffffff83aea5cb RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc9000e95b000 RSI: 0000000000001615 RDI: 0000000000001616
RBP: ffffc9000d49f9a8 R08: 0000000000000020 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1efa06f R12: ffff888052240e00
R13: dffffc0000000000 R14: 0000000000000020 R15: ffff888041be4fb8
FS:  00007f30039ec6c0(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f077b3aa000 CR3: 0000000032c81000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 _ocfs2_free_clusters+0x5e4/0xa70 fs/ocfs2/suballoc.c:2672
 ocfs2_replay_truncate_records fs/ocfs2/alloc.c:5979 [inline]
 __ocfs2_flush_truncate_log+0x706/0x10e0 fs/ocfs2/alloc.c:6062
 ocfs2_flush_truncate_log+0x4f/0x70 fs/ocfs2/alloc.c:6084
 ocfs2_sync_fs+0x116/0x310 fs/ocfs2/super.c:406
 __iterate_supers+0x13d/0x290 fs/super.c:923
 ksys_sync+0xb2/0x150 fs/sync.c:104
 __ia32_sys_sync+0xe/0x20 fs/sync.c:113
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3002b8f6c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f30039ec038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f3002de6090 RCX: 00007f3002b8f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f3002de6090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3002de6128 R14: 00007f3002de6090 R15: 00007fff39d4fac8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_ocfs2_free_suballoc_bits+0x107c/0x1330 fs/ocfs2/suballoc.c:2568
Code: 89 f1 e9 8f fa ff ff 44 89 f1 80 e1 07 fe c1 38 c1 0f 8c 4d fc ff ff 4c 89 f7 e8 af be 78 fe e9 40 fc ff ff e8 a5 7d 11 fe 90 <0f> 0b e8 9d 7d 11 fe 90 0f 0b f3 0f 1e fa 65 44 8b 25 52 5a c0 0e
RSP: 0018:ffffc9000d49f800 EFLAGS: 00010283
RAX: ffffffff83aea5cb RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc9000e95b000 RSI: 0000000000001615 RDI: 0000000000001616
RBP: ffffc9000d49f9a8 R08: 0000000000000020 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1efa06f R12: ffff888052240e00
R13: dffffc0000000000 R14: 0000000000000020 R15: ffff888041be4fb8
FS:  00007f30039ec6c0(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f077b3aa000 CR3: 0000000032c81000 CR4: 0000000000352ef0