loop0: detected capacity change from 0 to 262144
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
syz.0.0 (5314): drop_caches: 2
loop0: detected capacity change from 262144 to 262142
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:804!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #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:ocfs2_reserve_suballoc_bits+0x4798/0x4e70 fs/ocfs2/suballoc.c:804
Code: e1 07 80 c1 03 38 c1 0f 8c 75 dd ff ff 48 8d bc 24 b0 01 00 00 e8 68 57 68 fe e9 63 dd ff ff e8 7e 49 2e 08 e8 c9 6e fd fd 90 <0f> 0b e8 c1 6e fd fd 48 c7 c7 a0 fe e2 8e 48 8b 74 24 20 48 89 da
RSP: 0018:ffffc900019cece0 EFLAGS: 00010283
RAX: ffffffff83a20357 RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc9000ed6a000 RSI: 00000000000006f6 RDI: 00000000000006f7
RBP: ffffc900019cf1d0 R08: ffffffff83a1be35 R09: 1ffffffff20328be
R10: dffffc0000000000 R11: fffffbfff20328bf R12: 1ffff92000339e1c
R13: ffff88803c0fae00 R14: ffff88804928b000 R15: dffffc0000000000
FS:  00007f0a130a66c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff2b87ff88 CR3: 0000000000282000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_reserve_new_metadata_blocks+0x41c/0x9c0 fs/ocfs2/suballoc.c:982
 ocfs2_mknod+0x143a/0x2b30 fs/ocfs2/namei.c:345
 ocfs2_create+0x1ab/0x470 fs/ocfs2/namei.c:672
 lookup_open fs/namei.c:3649 [inline]
 open_last_lookups fs/namei.c:3748 [inline]
 path_openat+0x1c03/0x3590 fs/namei.c:3984
 do_filp_open+0x27f/0x4e0 fs/namei.c:4014
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_sys_open fs/open.c:1425 [inline]
 __se_sys_open fs/open.c:1421 [inline]
 __x64_sys_open+0x225/0x270 fs/open.c:1421
 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: 0033:0x7f0a1237ff19
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:00007f0a130a6058 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f0a12545fa0 RCX: 00007f0a1237ff19
RDX: 0000000000000000 RSI: 0000000000145142 RDI: 0000000020000240
RBP: 00007f0a123f3986 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0a12545fa0 R15: 00007fff83a39708
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_reserve_suballoc_bits+0x4798/0x4e70 fs/ocfs2/suballoc.c:804
Code: e1 07 80 c1 03 38 c1 0f 8c 75 dd ff ff 48 8d bc 24 b0 01 00 00 e8 68 57 68 fe e9 63 dd ff ff e8 7e 49 2e 08 e8 c9 6e fd fd 90 <0f> 0b e8 c1 6e fd fd 48 c7 c7 a0 fe e2 8e 48 8b 74 24 20 48 89 da
RSP: 0018:ffffc900019cece0 EFLAGS: 00010283
RAX: ffffffff83a20357 RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc9000ed6a000 RSI: 00000000000006f6 RDI: 00000000000006f7
RBP: ffffc900019cf1d0 R08: ffffffff83a1be35 R09: 1ffffffff20328be
R10: dffffc0000000000 R11: fffffbfff20328bf R12: 1ffff92000339e1c
R13: ffff88803c0fae00 R14: ffff88804928b000 R15: dffffc0000000000
FS:  00007f0a130a66c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020002380 CR3: 0000000000282000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400