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.
=======================================================
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1704!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5322 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 04/01/2014
RIP: 0010:ocfs2_block_group_search+0x367/0x4c0 fs/ocfs2/suballoc.c:1704
Code: d9 80 e1 07 80 c1 03 38 c1 0f 8c c5 fe ff ff 48 89 df e8 4c 73 65 fe e9 b8 fe ff ff e8 12 a8 f8 fd 90 0f 0b e8 0a a8 f8 fd 90 <0f> 0b 65 44 8b 3d f3 c6 6c 0f bf 07 00 00 00 44 89 fe e8 32 ac f8
RSP: 0018:ffffc9000f8b6b98 EFLAGS: 00010287
RAX: ffffffff83cd2936 RBX: 000000000000004a RCX: 0000000000100000
RDX: ffffc9000f01a000 RSI: 00000000000013e1 RDI: 00000000000013e2
RBP: 0000000000000001 R08: 00000000ffffffff R09: ffffc9000f8b7180
R10: dffffc0000000000 R11: ffffffff83cd25d0 R12: ffff888046f73ae0
R13: ffff888046ee5400 R14: ffff888023e2d000 R15: 000000000000004a
FS:  00007ffad58e56c0(0000) GS:ffff88808c881000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c84489000 CR3: 0000000012295000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_search_chain+0x5e9/0x1e10 fs/ocfs2/suballoc.c:1931
 ocfs2_claim_suballoc_bits+0x901/0x1f40 fs/ocfs2/suballoc.c:2113
 ocfs2_claim_new_inode+0x333/0x7c0 fs/ocfs2/suballoc.c:2411
 ocfs2_mknod_locked+0x10e/0x290 fs/ocfs2/namei.c:638
 ocfs2_mknod+0x13ee/0x2260 fs/ocfs2/namei.c:385
 ocfs2_create+0x195/0x460 fs/ocfs2/namei.c:677
 lookup_open fs/namei.c:4511 [inline]
 open_last_lookups fs/namei.c:4611 [inline]
 path_openat+0x1395/0x3860 fs/namei.c:4855
 do_file_open+0x23e/0x4a0 fs/namei.c:4887
 do_sys_openat2+0x113/0x200 fs/open.c:1364
 do_sys_open fs/open.c:1370 [inline]
 __do_sys_openat fs/open.c:1386 [inline]
 __se_sys_openat fs/open.c:1381 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1381
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffad499cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffad58e4fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffad4c15fa0 RCX: 00007ffad499cdd9
RDX: 00000000000c4042 RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007ffad4a32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001ff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffad4c16038 R14: 00007ffad4c15fa0 R15: 00007ffeeb234028
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_block_group_search+0x367/0x4c0 fs/ocfs2/suballoc.c:1704
Code: d9 80 e1 07 80 c1 03 38 c1 0f 8c c5 fe ff ff 48 89 df e8 4c 73 65 fe e9 b8 fe ff ff e8 12 a8 f8 fd 90 0f 0b e8 0a a8 f8 fd 90 <0f> 0b 65 44 8b 3d f3 c6 6c 0f bf 07 00 00 00 44 89 fe e8 32 ac f8
RSP: 0018:ffffc9000f8b6b98 EFLAGS: 00010287
RAX: ffffffff83cd2936 RBX: 000000000000004a RCX: 0000000000100000
RDX: ffffc9000f01a000 RSI: 00000000000013e1 RDI: 00000000000013e2
RBP: 0000000000000001 R08: 00000000ffffffff R09: ffffc9000f8b7180
R10: dffffc0000000000 R11: ffffffff83cd25d0 R12: ffff888046f73ae0
R13: ffff888046ee5400 R14: ffff888023e2d000 R15: 000000000000004a
FS:  00007ffad58e56c0(0000) GS:ffff88808c881000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffffffff000 CR3: 0000000012295000 CR4: 0000000000352ef0