syzbot

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.
=======================================================
------------[ cut here ]------------
kernel BUG at fs/ocfs2/buffer_head_io.c:45!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 5836 Comm: syz-executor319 Not tainted 6.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:ocfs2_write_block+0x62a/0x6b0 fs/ocfs2/buffer_head_io.c:45
Code: fc ff df 80 3c 08 00 74 08 4c 89 ef e8 4f ab 77 fe 49 8b 7d 00 48 89 de 48 8b 54 24 08 e8 ce 4b 11 00 eb 2e e8 17 04 11 fe 90 <0f> 0b e8 0f 04 11 fe 90 0f 0b e8 57 11 3b 08 e8 02 04 11 fe 49 bd
RSP: 0018:ffffc900020eede0 EFLAGS: 00010293
RAX: ffffffff8383d599 RBX: 0000000000000000 RCX: ffff88807cb41e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900020eeeb0 R08: ffffffff8383d0f0 R09: 1ffffffff2037bad
R10: dffffc0000000000 R11: fffffbfff2037bae R12: ffff88807385a4a0
R13: dffffc0000000000 R14: ffff88807385a488 R15: ffff88803326c000
FS:  000055557968e380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559a555999c8 CR3: 000000002f124000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_update_disk_slot+0x498/0x690 fs/ocfs2/slot_map.c:197
 ocfs2_find_slot+0x4cb/0xaa0 fs/ocfs2/slot_map.c:482
 ocfs2_mount_volume+0x1a0/0x1940 fs/ocfs2/super.c:1804
 ocfs2_fill_super+0x475a/0x5750 fs/ocfs2/super.c:1084
 mount_bdev+0x20a/0x2d0 fs/super.c:1693
 legacy_get_tree+0xee/0x190 fs/fs_context.c:662
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
 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: 0033:0x7f6346bf51aa
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd8776fa78 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffd8776fa90 RCX: 00007f6346bf51aa
RDX: 0000000020004440 RSI: 0000000020000040 RDI: 00007ffd8776fa90
RBP: 0000000000000004 R08: 00007ffd8776fad0 R09: 0000000000004420
R10: 00000000000008c0 R11: 0000000000000282 R12: 00000000000008c0
R13: 00007ffd8776fad0 R14: 0000000000000003 R15: 0000000001000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_write_block+0x62a/0x6b0 fs/ocfs2/buffer_head_io.c:45
Code: fc ff df 80 3c 08 00 74 08 4c 89 ef e8 4f ab 77 fe 49 8b 7d 00 48 89 de 48 8b 54 24 08 e8 ce 4b 11 00 eb 2e e8 17 04 11 fe 90 <0f> 0b e8 0f 04 11 fe 90 0f 0b e8 57 11 3b 08 e8 02 04 11 fe 49 bd
RSP: 0018:ffffc900020eede0 EFLAGS: 00010293
RAX: ffffffff8383d599 RBX: 0000000000000000 RCX: ffff88807cb41e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900020eeeb0 R08: ffffffff8383d0f0 R09: 1ffffffff2037bad
R10: dffffc0000000000 R11: fffffbfff2037bae R12: ffff88807385a4a0
R13: dffffc0000000000 R14: ffff88807385a488 R15: ffff88803326c000
FS:  000055557968e380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559a555999c8 CR3: 000000002f124000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400