Hi Kernel Maintainers,

Our tool found a kernel bug KASAN: use-after-free in search_by_entry_key. Please see the details below.

Kenrel commit: v6.9 (Commits on May 12, 2024)
Kernel config: attachment
C/Syz reproducer: attachment

We find this bug was reported and marked as fixed recently. Seems Syzbot could not trigger this bug in recent kernels. (https://syzkaller.appspot.com/bug?extid=ffe24b1afbc4cb5ae8fb)

Our reproducer can trigger this bug in v6.9, so the bug may have not been fixed correctly.

Please let me know for anything I can help.

Best,
Shuangpeng