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:1443!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted 6.16.0-rc2-syzkaller-00278-g3f75bfff44be #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 95 0d 1a fe 90 0f 0b e8 8d 0d 1a fe 90 0f 0b e8 85 0d 1a fe 90 0f 0b e8 7d 0d 1a fe 90 0f 0b e8 75 0d 1a fe 90 <0f> 0b e8 6d 0d 1a fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000d5a7140 EFLAGS: 00010287
RAX: ffffffff83a64edb RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000de82000 RSI: 000000000000030b RDI: 000000000000030c
RBP: ffffc9000d5a73d0 R08: ffffc9000d5a7440 R09: 0000000000000000
R10: ffffc9000d5a7440 R11: fffff52001ab4e8d R12: ffff888053312808
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100a662501
FS:  00007f28b59a86c0(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f28b59a6fb8 CR3: 000000004313a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_claim_metadata+0x178/0x4c0 fs/ocfs2/suballoc.c:2082
 ocfs2_create_refcount_tree+0x54f/0x1250 fs/ocfs2/refcounttree.c:591
 ocfs2_reflink_remap_blocks+0x2ea/0x1930 fs/ocfs2/refcounttree.c:4646
 ocfs2_remap_file_range+0x4b7/0x730 fs/ocfs2/file.c:2740
 vfs_copy_file_range+0xd53/0x1310 fs/read_write.c:1591
 __do_sys_copy_file_range fs/read_write.c:1677 [inline]
 __se_sys_copy_file_range+0x2fb/0x470 fs/read_write.c:1644
 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: 0033:0x7f28b4b8e929
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:00007f28b59a8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f28b4db5fa0 RCX: 00007f28b4b8e929
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 000000000000000b
RBP: 00007f28b4c10b39 R08: 0000020000000008 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f28b4db5fa0 R15: 00007fffe47d8ae8
 </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 95 0d 1a fe 90 0f 0b e8 8d 0d 1a fe 90 0f 0b e8 85 0d 1a fe 90 0f 0b e8 7d 0d 1a fe 90 0f 0b e8 75 0d 1a fe 90 <0f> 0b e8 6d 0d 1a fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000d5a7140 EFLAGS: 00010287
RAX: ffffffff83a64edb RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000de82000 RSI: 000000000000030b RDI: 000000000000030c
RBP: ffffc9000d5a73d0 R08: ffffc9000d5a7440 R09: 0000000000000000
R10: ffffc9000d5a7440 R11: fffff52001ab4e8d R12: ffff888053312808
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100a662501
FS:  00007f28b59a86c0(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f28b5986fc8 CR3: 000000004313a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400