loop0: detected capacity change from 0 to 32768
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2666!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8473 Comm: syz.0.1593 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:submit_bh_wbc+0x4ac/0x4d0 fs/buffer.c:2666
Code: 02 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c c0 fe ff ff 48 89 ef e8 e5 09 e2 ff e9 b3 fe ff ff e8 fb 1e 91 ff 0f 0b e8 f4 1e 91 ff <0f> 0b e8 ed 1e 91 ff 0f 0b e8 e6 1e 91 ff 0f 0b e8 df 1e 91 ff 0f
RSP: 0018:ffffc90003366ee8 EFLAGS: 00010287
RAX: ffffffff81f1537c RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90005799000 RSI: 000000000000bfd7 RDI: 000000000000bfd8
RBP: 0000000000000001 R08: ffff88805524382f R09: 1ffff1100aa48705
R10: dffffc0000000000 R11: ffffed100aa48706 R12: 1ffff1100aa48705
R13: 0000000000000000 R14: ffff888055243828 R15: dffffc0000000000
FS:  00007fe81bd1c6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb5cf9f7000 CR3: 0000000065711000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_write_block+0x39e/0x6b0 fs/ocfs2/buffer_head_io.c:67
 ocfs2_journal_toggle_dirty+0x214/0x350 fs/ocfs2/journal.c:1014
 ocfs2_journal_wipe+0xd5/0x280 fs/ocfs2/journal.c:1187
 ocfs2_check_volume fs/ocfs2/super.c:2418 [inline]
 ocfs2_mount_volume+0xaca/0x1590 fs/ocfs2/super.c:1819
 ocfs2_fill_super+0x3f09/0x5090 fs/ocfs2/super.c:1082
 mount_bdev+0x287/0x3c0 fs/super.c:1443
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3078
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe81ad9c14a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe81bd1be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe81bd1bee0 RCX: 00007fe81ad9c14a
RDX: 0000200000004440 RSI: 0000200000000040 RDI: 00007fe81bd1bea0
RBP: 0000200000004440 R08: 00007fe81bd1bee0 R09: 00000000000048d1
R10: 00000000000048d1 R11: 0000000000000246 R12: 0000200000000040
R13: 00007fe81bd1bea0 R14: 0000000000004446 R15: 0000200000000300
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:submit_bh_wbc+0x4ac/0x4d0 fs/buffer.c:2666
Code: 02 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c c0 fe ff ff 48 89 ef e8 e5 09 e2 ff e9 b3 fe ff ff e8 fb 1e 91 ff 0f 0b e8 f4 1e 91 ff <0f> 0b e8 ed 1e 91 ff 0f 0b e8 e6 1e 91 ff 0f 0b e8 df 1e 91 ff 0f
RSP: 0018:ffffc90003366ee8 EFLAGS: 00010287
RAX: ffffffff81f1537c RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90005799000 RSI: 000000000000bfd7 RDI: 000000000000bfd8
RBP: 0000000000000001 R08: ffff88805524382f R09: 1ffff1100aa48705
R10: dffffc0000000000 R11: ffffed100aa48706 R12: 1ffff1100aa48705
R13: 0000000000000000 R14: ffff888055243828 R15: dffffc0000000000
FS:  00007fe81bd1c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ddef0cfe8 CR3: 0000000065711000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400