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: 5330 Comm: syz.0.0 Not tainted 6.16.0-rc1-syzkaller #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 75 13 1a fe 90 0f 0b e8 6d 13 1a fe 90 0f 0b e8 65 13 1a fe 90 0f 0b e8 5d 13 1a fe 90 0f 0b e8 55 13 1a fe 90 <0f> 0b e8 4d 13 1a fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000d3f6b40 EFLAGS: 00010287
RAX: ffffffff83a64b9b RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000e1c2000 RSI: 0000000000000416 RDI: 0000000000000417
RBP: ffffc9000d3f6dd0 R08: ffffc9000d3f6e60 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000002 R12: ffff88805221db08
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100a443b61
FS:  00007f10e7d166c0(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f10dbdff000 CR3: 000000004316d000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ocfs2_claim_clusters+0x303/0x8f0 fs/ocfs2/suballoc.c:2421
 ocfs2_claim_clusters fs/ocfs2/suballoc.c:2458 [inline]
 ocfs2_block_group_alloc_contig fs/ocfs2/suballoc.c:432 [inline]
 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:699 [inline]
 ocfs2_reserve_suballoc_bits+0xf1e/0x4640 fs/ocfs2/suballoc.c:834
 ocfs2_reserve_new_metadata_blocks+0x403/0x940 fs/ocfs2/suballoc.c:984
 ocfs2_reserve_new_metadata fs/ocfs2/suballoc.c:1027 [inline]
 ocfs2_lock_allocators+0x29e/0x5c0 fs/ocfs2/suballoc.c:2761
 ocfs2_extend_allocation+0x39b/0x17a0 fs/ocfs2/file.c:589
 ocfs2_allocate_unwritten_extents+0x2e9/0x7b0 fs/ocfs2/file.c:1496
 __ocfs2_change_file_space+0x901/0xe80 fs/ocfs2/file.c:2023
 ocfs2_fallocate+0x1f5/0x240 fs/ocfs2/file.c:2138
 vfs_fallocate+0x6a0/0x830 fs/open.c:341
 ksys_fallocate fs/open.c:365 [inline]
 __do_sys_fallocate fs/open.c:370 [inline]
 __se_sys_fallocate fs/open.c:368 [inline]
 __x64_sys_fallocate+0xc0/0x110 fs/open.c:368
 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: 0033:0x7f10e6f8e929
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:00007f10e7d16038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f10e71b5fa0 RCX: 00007f10e6f8e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007f10e7010b39 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000001000f4 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f10e71b5fa0 R15: 00007ffd3f8a18a8
 </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 75 13 1a fe 90 0f 0b e8 6d 13 1a fe 90 0f 0b e8 65 13 1a fe 90 0f 0b e8 5d 13 1a fe 90 0f 0b e8 55 13 1a fe 90 <0f> 0b e8 4d 13 1a fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000d3f6b40 EFLAGS: 00010287
RAX: ffffffff83a64b9b RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000e1c2000 RSI: 0000000000000416 RDI: 0000000000000417
RBP: ffffc9000d3f6dd0 R08: ffffc9000d3f6e60 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000002 R12: ffff88805221db08
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff1100a443b61
FS:  00007f10e7d166c0(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f10e33f4fc8 CR3: 000000004316d000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400