ocfs2: Mounting device (7,5) on (node local, slot 0) with writeback data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/uptodate.c:509!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9312 Comm: syz.5.724 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ocfs2_set_new_buffer_uptodate+0x147/0x160 fs/ocfs2/uptodate.c:509
Code: 03 42 80 3c 20 00 74 0e 48 89 cf 49 89 ce e8 50 38 7c fe 4c 89 f1 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d ff 21 e8 49 ca 24 fe <0f> 0b e8 42 ca 24 fe 0f 0b e8 3b ca 24 fe 0f 0b e8 34 ca 24 fe 0f
RSP: 0018:ffffc9000b7ee9e8 EFLAGS: 00010287
RAX: ffffffff8360c677 RBX: ffff88805612ebf0 RCX: 0000000000080000
RDX: ffffc9000d23b000 RSI: 0000000000005d77 RDI: 0000000000005d78
RBP: 0000000000000001 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 1ffff920016fdd70
R13: dffffc0000000000 R14: ffff888056134ae0 R15: ffff888056134ae0
FS:  00007fa7739816c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000c000 CR3: 000000001f3c0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ocfs2_extend_dir+0x115a/0x4760 fs/ocfs2/dir.c:3303
 ocfs2_prepare_dx_dir_for_insert fs/ocfs2/dir.c:4236 [inline]
 ocfs2_prepare_dir_for_insert+0x3d44/0x5480 fs/ocfs2/dir.c:4298
 ocfs2_mknod+0x818/0x20f0 fs/ocfs2/namei.c:294
 ocfs2_mkdir+0x196/0x410 fs/ocfs2/namei.c:657
 vfs_mkdir+0x296/0x440 fs/namei.c:4121
 do_mkdirat+0x1d4/0x440 fs/namei.c:4144
 __do_sys_mkdir fs/namei.c:4164 [inline]
 __se_sys_mkdir fs/namei.c:4162 [inline]
 __x64_sys_mkdir+0x6e/0x80 fs/namei.c:4162
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa772b8f749
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:00007fa773981038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fa772de5fa0 RCX: 00007fa772b8f749
RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000200000000280
RBP: 00007fa772c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa772de6038 R14: 00007fa772de5fa0 R15: 00007fffae66a198
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_set_new_buffer_uptodate+0x147/0x160 fs/ocfs2/uptodate.c:509
Code: 03 42 80 3c 20 00 74 0e 48 89 cf 49 89 ce e8 50 38 7c fe 4c 89 f1 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d ff 21 e8 49 ca 24 fe <0f> 0b e8 42 ca 24 fe 0f 0b e8 3b ca 24 fe 0f 0b e8 34 ca 24 fe 0f
RSP: 0018:ffffc9000b7ee9e8 EFLAGS: 00010287
RAX: ffffffff8360c677 RBX: ffff88805612ebf0 RCX: 0000000000080000
RDX: ffffc9000d23b000 RSI: 0000000000005d77 RDI: 0000000000005d78
RBP: 0000000000000001 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 1ffff920016fdd70
R13: dffffc0000000000 R14: ffff888056134ae0 R15: ffff888056134ae0
FS:  00007fa7739816c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000c000 CR3: 000000001f3c0000 CR4: 00000000003526f0