------------[ cut here ]------------
WARNING: CPU: 0 PID: 5327 at fs/jbd2/transaction.c:1556 jbd2_journal_dirty_metadata+0x8b2/0xc00 fs/jbd2/transaction.c:1556
Modules linked in:
CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:jbd2_journal_dirty_metadata+0x8b2/0xc00 fs/jbd2/transaction.c:1556
Code: 8b 44 24 08 49 89 e9 50 41 55 53 41 57 e8 86 9d 4e 09 48 83 c4 20 90 0f 0b 90 bb ea ff ff ff e9 26 fe ff ff e8 7f 5f 1f ff 90 <0f> 0b 90 bb e4 ff ff ff e9 13 fe ff ff 89 d9 80 e1 07 80 c1 03 38
RSP: 0018:ffffc9000d08ef18 EFLAGS: 00010287
RAX: ffffffff82757aa1 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000db22000 RSI: 0000000000001f94 RDI: 0000000000001f95
RBP: 1ffff1100875fe82 R08: ffffffff827576ca R09: fffff52001a11dd4
R10: dffffc0000000000 R11: fffff52001a11dd4 R12: dffffc0000000000
R13: ffff88805117fa60 R14: 1ffff1100a22ff4c R15: ffff888043aff3c0
FS:  00007fae501b76c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000005a0000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_journal_dirty+0x156/0x7c0 fs/ocfs2/journal.c:812
 ocfs2_insert_refcount_rec fs/ocfs2/refcounttree.c:1793 [inline]
 __ocfs2_increase_refcount+0xf49/0x2a90 fs/ocfs2/refcounttree.c:2027
 ocfs2_add_refcount_flag+0xad4/0x1150 fs/ocfs2/refcounttree.c:3703
 ocfs2_reflink_remap_extent fs/ocfs2/refcounttree.c:4557 [inline]
 ocfs2_reflink_remap_blocks+0xe58/0x1f30 fs/ocfs2/refcounttree.c:4684
 ocfs2_remap_file_range+0x5fa/0x8d0 fs/ocfs2/file.c:2736
 vfs_copy_file_range+0xc07/0x1510 fs/read_write.c:1615
 __do_sys_copy_file_range fs/read_write.c:1705 [inline]
 __se_sys_copy_file_range+0x3f2/0x5d0 fs/read_write.c:1668
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fae5037e719
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:00007fae501b7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007fae50536130 RCX: 00007fae5037e719
RDX: 0000000000000007 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007fae503f132e R08: 0000000000003df1 R09: 7a0a000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fae50536130 R15: 00007ffef0f141f8
 </TASK>