loop0: detected capacity change from 0 to 32768
ocfs2: Unknown parameter '��������'
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 ]------------
jbd2_handle_buffer_credits(handle) <= 0
WARNING: fs/jbd2/transaction.c:1598 at jbd2_journal_dirty_metadata+0xb3b/0xea0 fs/jbd2/transaction.c:1598, CPU#0: syz.0.0/5323
Modules linked in:
CPU: 0 UID: 0 PID: 5323 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:jbd2_journal_dirty_metadata+0xb3b/0xea0 fs/jbd2/transaction.c:1598
Code: 44 24 28 44 8b 00 48 c7 c7 40 83 06 8c 89 de 44 89 ea 4c 89 f1 e8 05 70 84 fe b8 ea ff ff ff e9 62 fd ff ff e8 d6 d2 23 ff 90 <0f> 0b 90 b8 e4 ff ff ff e9 4f fd ff ff 44 89 e9 80 e1 07 80 c1 03
RSP: 0018:ffffc9000ee6e8e0 EFLAGS: 00010293
RAX: ffffffff82a34fea RBX: 1ffff1100a4c1b62 RCX: ffff888000f88000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff88805260db18 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001dcdd0c R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88805258a460
FS:  00007f2840c436c0(0000) GS:ffff88808c540000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2834bff000 CR3: 0000000012771000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_journal_dirty+0x130/0x6f0 fs/ocfs2/journal.c:835
 ocfs2_add_branch fs/ocfs2/alloc.c:1346 [inline]
 ocfs2_grow_tree+0x2dba/0x40d0 fs/ocfs2/alloc.c:1606
 ocfs2_split_and_insert+0x404/0x13a0 fs/ocfs2/alloc.c:4960
 ocfs2_split_extent+0x1677/0x1ec0 fs/ocfs2/alloc.c:5142
 ocfs2_change_extent_flag+0xaaa/0xdc0 fs/ocfs2/alloc.c:5239
 ocfs2_mark_extent_refcounted fs/ocfs2/refcounttree.c:2353 [inline]
 ocfs2_add_refcount_flag+0x658/0xe60 fs/ocfs2/refcounttree.c:3697
 ocfs2_reflink_remap_extent fs/ocfs2/refcounttree.c:4559 [inline]
 ocfs2_reflink_remap_blocks+0xd69/0x1aa0 fs/ocfs2/refcounttree.c:4686
 ocfs2_remap_file_range+0x451/0x6f0 fs/ocfs2/file.c:2752
 vfs_copy_file_range+0xd70/0x1340 fs/read_write.c:1599
 __do_sys_copy_file_range fs/read_write.c:1682 [inline]
 __se_sys_copy_file_range+0x2fb/0x480 fs/read_write.c:1649
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f283fd9e019
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:00007f2840c42fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f2840025fa0 RCX: 00007f283fd9e019
RDX: 000000000000000b RSI: 0000000000000000 RDI: 000000000000000c
RBP: 00007f283fe3500c R08: 0000000000003df1 R09: 0000000000000000
R10: 00002000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2840026038 R14: 00007f2840025fa0 R15: 00007fff49c86298
 </TASK>