loop0: detected capacity change from 0 to 32768
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1443!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5359 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_find_victim_chain fs/ocfs2/suballoc.c:1443 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 fs/ocfs2/suballoc.c:1996
Code: c2 fb ff ff e8 e5 b6 16 fe 90 0f 0b e8 dd b6 16 fe 90 0f 0b e8 d5 b6 16 fe 90 0f 0b e8 cd b6 16 fe 90 0f 0b e8 c5 b6 16 fe 90 <0f> 0b e8 bd b6 16 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000d306e80 EFLAGS: 00010287
RAX: ffffffff83a9067b RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000e132000 RSI: 0000000000001109 RDI: 000000000000110a
RBP: ffffc9000d307110 R08: ffffc9000d3071a0 R09: 0000000000000000
R10: ffffc9000d3071a0 R11: fffff52001a60e39 R12: ffff888052799208
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100a4f3241
FS:  00007fcdc74286c0(0000) GS:ffff88808d007000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc54f1909c0 CR3: 0000000042722000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_claim_new_inode+0x332/0x7a0 fs/ocfs2/suballoc.c:2292
 ocfs2_mknod_locked+0x100/0x250 fs/ocfs2/namei.c:637
 ocfs2_mknod+0x10c7/0x2050 fs/ocfs2/namei.c:384
 ocfs2_create+0x1a5/0x440 fs/ocfs2/namei.c:676
 lookup_open fs/namei.c:3708 [inline]
 open_last_lookups fs/namei.c:3807 [inline]
 path_openat+0x14f1/0x3830 fs/namei.c:4043
 do_filp_open+0x1fa/0x410 fs/namei.c:4073
 do_sys_openat2+0x121/0x1c0 fs/open.c:1435
 do_sys_open fs/open.c:1450 [inline]
 __do_sys_openat fs/open.c:1466 [inline]
 __se_sys_openat fs/open.c:1461 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1461
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcdc658eec9
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:00007fcdc7428038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fcdc67e5fa0 RCX: 00007fcdc658eec9
RDX: 000000000000275a RSI: 00002000000001c0 RDI: ffffffffffffff9c
RBP: 00007fcdc6611f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcdc67e6038 R14: 00007fcdc67e5fa0 R15: 00007fff8eddd9a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1443 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 fs/ocfs2/suballoc.c:1996
Code: c2 fb ff ff e8 e5 b6 16 fe 90 0f 0b e8 dd b6 16 fe 90 0f 0b e8 d5 b6 16 fe 90 0f 0b e8 cd b6 16 fe 90 0f 0b e8 c5 b6 16 fe 90 <0f> 0b e8 bd b6 16 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000d306e80 EFLAGS: 00010287
RAX: ffffffff83a9067b RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000e132000 RSI: 0000000000001109 RDI: 000000000000110a
RBP: ffffc9000d307110 R08: ffffc9000d3071a0 R09: 0000000000000000
R10: ffffc9000d3071a0 R11: fffff52001a60e39 R12: ffff888052799208
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100a4f3241
FS:  00007fcdc74286c0(0000) GS:ffff88808d007000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcdc7406fc8 CR3: 0000000042722000 CR4: 0000000000352ef0