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.
(syz.0.0,5355,0):ocfs2_check_set_options:1244 ERROR: Invalid heartbeat mount options
loop0: detected capacity change from 32768 to 32767
OCFS2: ERROR (device loop0): int ocfs2_validate_inode_block(struct super_block *, struct buffer_head *): Invalid dinode #65: signature = 01
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
OCFS2: File system is now read-only.
(syz.0.0,5355,0):ocfs2_find_entry_dx:1029 ERROR: status = -30
OCFS2: ERROR (device loop0): int ocfs2_validate_dx_root(struct super_block *, struct buffer_head *): Dir Index Root # 144680345676047725 has bad signature this
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
(syz.0.0,5355,0):ocfs2_find_entry_dx:1037 ERROR: status = -30
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:2568!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5355 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 cf 9b 7b fe e9 40 fc ff ff e8 15 ab 16 fe 90 <0f> 0b e8 0d ab 16 fe 90 0f 0b f3 0f 1e fa 65 44 8b 25 a2 2c f8 0e
RSP: 0018:ffffc9000d38f680 EFLAGS: 00010287
RAX: ffffffff83a9137b RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc9000dc62000 RSI: 00000000000019e3 RDI: 00000000000019e4
RBP: ffffc9000d38f828 R08: 0000000000000020 R09: 000000000000001f
R10: dffffc0000000000 R11: fffffbfff1f47807 R12: ffff888053e28e00
R13: dffffc0000000000 R14: 0000000000000020 R15: ffff888042bbcfb8
FS:  00007fc56ba786c0(0000) GS:ffff88808d20c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc55f9ff000 CR3: 0000000042d7f000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 _ocfs2_free_clusters+0x5e4/0xa70 fs/ocfs2/suballoc.c:2672
 ocfs2_sync_local_to_main+0x540/0xb60 fs/ocfs2/localalloc.c:991
 ocfs2_shutdown_local_alloc+0x6e0/0xa10 fs/ocfs2/localalloc.c:447
 ocfs2_dismount_volume+0x201/0x8d0 fs/ocfs2/super.c:1825
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1766
 deactivate_locked_super+0xb9/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1375
 task_work_run+0x1d1/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc56ab8ebe9
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:00007fc56ba78038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fc56adc5fa0 RCX: 00007fc56ab8ebe9
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007fc56ac11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc56adc6038 R14: 00007fc56adc5fa0 R15: 00007fff44589d98
 </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 cf 9b 7b fe e9 40 fc ff ff e8 15 ab 16 fe 90 <0f> 0b e8 0d ab 16 fe 90 0f 0b f3 0f 1e fa 65 44 8b 25 a2 2c f8 0e
RSP: 0018:ffffc9000d38f680 EFLAGS: 00010287
RAX: ffffffff83a9137b RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc9000dc62000 RSI: 00000000000019e3 RDI: 00000000000019e4
RBP: ffffc9000d38f828 R08: 0000000000000020 R09: 000000000000001f
R10: dffffc0000000000 R11: fffffbfff1f47807 R12: ffff888053e28e00
R13: dffffc0000000000 R14: 0000000000000020 R15: ffff888042bbcfb8
FS:  00007fc56ba786c0(0000) GS:ffff88808d20c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc55f9ff000 CR3: 0000000042d7f000 CR4: 0000000000352ef0