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kernel BUG at fs/ocfs2/uptodate.c:509!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 14308 Comm: syz.4.2452 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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 b0 79 7c fe 4c 89 f1 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d ff 21 e8 79 2e 25 fe <0f> 0b e8 72 2e 25 fe 0f 0b e8 6b 2e 25 fe 0f 0b e8 64 2e 25 fe 0f
RSP: 0018:ffffc900056c69e8 EFLAGS: 00010287
RAX: ffffffff836061c7 RBX: ffff88805fce9670 RCX: 0000000000080000
RDX: ffffc9000cd4a000 RSI: 000000000000e877 RDI: 000000000000e878
RBP: 0000000000000001 R08: ffffffff8e4a94ef R09: 1ffffffff1c9529d
R10: dffffc0000000000 R11: fffffbfff1c9529e R12: 1ffff92000ad8d70
R13: dffffc0000000000 R14: ffff8880782e20e8 R15: ffff8880782e20e8
FS:  00007f1c4a75b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c407d5000 CR3: 00000000574f8000 CR4: 00000000003506e0
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:4113
 do_mkdirat+0x1d4/0x440 fs/namei.c:4136
 __do_sys_mkdirat fs/namei.c:4151 [inline]
 __se_sys_mkdirat fs/namei.c:4149 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4149
 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: 0033:0x7f1c4998d417
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 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:00007f1c4a75ae68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f1c4a75aef0 RCX: 00007f1c4998d417
RDX: 00000000000001ff RSI: 0000200000000080 RDI: 00000000ffffff9c
RBP: 0000200000000040 R08: 00002000000000c0 R09: 0000000000000000
R10: 0000200000000040 R11: 0000000000000246 R12: 0000200000000080
R13: 00007f1c4a75aeb0 R14: 0000000000000000 R15: 0000000000000000
 </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 b0 79 7c fe 4c 89 f1 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d ff 21 e8 79 2e 25 fe <0f> 0b e8 72 2e 25 fe 0f 0b e8 6b 2e 25 fe 0f 0b e8 64 2e 25 fe 0f
RSP: 0018:ffffc900056c69e8 EFLAGS: 00010287
RAX: ffffffff836061c7 RBX: ffff88805fce9670 RCX: 0000000000080000
RDX: ffffc9000cd4a000 RSI: 000000000000e877 RDI: 000000000000e878
RBP: 0000000000000001 R08: ffffffff8e4a94ef R09: 1ffffffff1c9529d
R10: dffffc0000000000 R11: fffffbfff1c9529e R12: 1ffff92000ad8d70
R13: dffffc0000000000 R14: ffff8880782e20e8 R15: ffff8880782e20e8
FS:  00007f1c4a75b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c407d5000 CR3: 00000000574f8000 CR4: 00000000003506e0