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.
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1441!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5310 Comm: syz.0.0 Not tainted 6.15.0-rc4-syzkaller-00208-g00b827f0cffa #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:1441 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x21d9/0x2310 fs/ocfs2/suballoc.c:1982
Code: 38 fb ff ff e8 28 6b 1e fe 90 0f 0b e8 20 6b 1e fe 90 0f 0b e8 18 6b 1e fe 90 0f 0b e8 10 6b 1e fe 90 0f 0b e8 08 6b 1e fe 90 <0f> 0b e8 00 6b 1e fe 90 0f 0b f3 0f 1e fa 4d 89 f4 65 8b 1d d3 ea
RSP: 0018:ffffc9000d2de5c0 EFLAGS: 00010283
RAX: ffffffff83a15548 RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000e24a000 RSI: 00000000000006b2 RDI: 00000000000006b3
RBP: ffffc9000d2de850 R08: ffffc9000d2de8e0 R09: 0000000000000000
R10: ffffc9000d2de8e0 R11: fffff52001a5bd21 R12: ffff88805362ae00
R13: ffff88801f2b6b08 R14: 0000000000000255 R15: dffffc0000000000
FS:  00007f01169b76c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000005000 CR3: 00000000339f9000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ocfs2_claim_clusters+0x307/0x910 fs/ocfs2/suballoc.c:2395
 ocfs2_local_alloc_new_window fs/ocfs2/localalloc.c:1166 [inline]
 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1295 [inline]
 ocfs2_reserve_local_alloc_bits+0x12be/0x24e0 fs/ocfs2/localalloc.c:669
 ocfs2_reserve_clusters_with_limit+0x1be/0xba0 fs/ocfs2/suballoc.c:1166
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1227 [inline]
 ocfs2_lock_allocators+0x2fa/0x5c0 fs/ocfs2/suballoc.c:2746
 ocfs2_write_begin_nolock+0x2279/0x4340 fs/ocfs2/aops.c:1718
 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1882
 generic_perform_write+0x2c4/0x910 mm/filemap.c:4103
 ocfs2_file_write_iter+0x157a/0x1d10 fs/ocfs2/file.c:2469
 do_iter_readv_writev+0x56b/0x7f0 fs/read_write.c:-1
 vfs_writev+0x306/0x9a0 fs/read_write.c:1055
 do_writev+0x14d/0x2d0 fs/read_write.c:1101
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0115b8e969
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:00007f01169b7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f0115db5fa0 RCX: 00007f0115b8e969
RDX: 0000000000000006 RSI: 0000200000000880 RDI: 000000000000000d
RBP: 00007f0115c10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0115db5fa0 R15: 00007fff684ccb68
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1441 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x21d9/0x2310 fs/ocfs2/suballoc.c:1982
Code: 38 fb ff ff e8 28 6b 1e fe 90 0f 0b e8 20 6b 1e fe 90 0f 0b e8 18 6b 1e fe 90 0f 0b e8 10 6b 1e fe 90 0f 0b e8 08 6b 1e fe 90 <0f> 0b e8 00 6b 1e fe 90 0f 0b f3 0f 1e fa 4d 89 f4 65 8b 1d d3 ea
RSP: 0018:ffffc9000d2de5c0 EFLAGS: 00010283
RAX: ffffffff83a15548 RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000e24a000 RSI: 00000000000006b2 RDI: 00000000000006b3
RBP: ffffc9000d2de850 R08: ffffc9000d2de8e0 R09: 0000000000000000
R10: ffffc9000d2de8e0 R11: fffff52001a5bd21 R12: ffff88805362ae00
R13: ffff88801f2b6b08 R14: 0000000000000255 R15: dffffc0000000000
FS:  00007f01169b76c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0116995fc8 CR3: 00000000339f9000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400