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:1443!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5353 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-11579-g35a813e010b9 #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 c5 b2 17 fe 90 0f 0b e8 bd b2 17 fe 90 0f 0b e8 b5 b2 17 fe 90 0f 0b e8 ad b2 17 fe 90 0f 0b e8 a5 b2 17 fe 90 <0f> 0b e8 9d b2 17 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000d4ae720 EFLAGS: 00010287
RAX: ffffffff83a807eb RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000de5a000 RSI: 0000000000000773 RDI: 0000000000000774
RBP: ffffc9000d4ae9b0 R08: ffffc9000d4aea40 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000002 R12: ffff888052d69d08
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100a5ad3a1
FS:  00007f57ee0816c0(0000) GS:ffff88808d219000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f57e1fff000 CR3: 0000000042d42000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __ocfs2_claim_clusters+0x303/0x8f0 fs/ocfs2/suballoc.c:2421
 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:1168
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1229 [inline]
 ocfs2_lock_allocators+0x2fa/0x5c0 fs/ocfs2/suballoc.c:2772
 ocfs2_write_begin_nolock+0x2279/0x4340 fs/ocfs2/aops.c:1719
 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1884
 generic_perform_write+0x2c2/0x900 mm/filemap.c:4175
 ocfs2_file_write_iter+0x157a/0x1d10 fs/ocfs2/file.c:2469
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x54b/0xa90 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 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: 0033:0x7f57ed18eb69
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:00007f57ee081038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f57ed3b5fa0 RCX: 00007f57ed18eb69
RDX: 00000000fffffceb RSI: 00002000000001c0 RDI: 0000000000000007
RBP: 00007f57ed211df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f57ed3b5fa0 R15: 00007ffcfd291518
 </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 c5 b2 17 fe 90 0f 0b e8 bd b2 17 fe 90 0f 0b e8 b5 b2 17 fe 90 0f 0b e8 ad b2 17 fe 90 0f 0b e8 a5 b2 17 fe 90 <0f> 0b e8 9d b2 17 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000d4ae720 EFLAGS: 00010287
RAX: ffffffff83a807eb RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000de5a000 RSI: 0000000000000773 RDI: 0000000000000774
RBP: ffffc9000d4ae9b0 R08: ffffc9000d4aea40 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000002 R12: ffff888052d69d08
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100a5ad3a1
FS:  00007f57ee0816c0(0000) GS:ffff88808d219000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f57ee05ffc8 CR3: 0000000042d42000 CR4: 0000000000352ef0