Re: [syzbot] [rdma] general protection fault in kernel_sock_shutdown (4)

[Zhu Yanjun]

I don’t think the test results are correct.

I ran the test twice.

In the first run, a commit that is known to fix this issue was already 
included, but syzbot still reported the problem.

In the second run, I removed that commit and introduced a similar fix 
instead, but syzbot still reported the same issue.

In both cases, there was no call trace or any additional information 
provided.

Given this, I suspect that syzbot may not actually be able to reproduce 
the issue.

Thanks,

Zhu Yanjun

在 2026/5/29 19:08, syzbot 写道:
> Hello,
>
> syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> lost connection to test machine
>
>
>
> Tested on:
>
> commit:         f569da7e DMA/rxe: Use rtnl_lock/unlock to fix it
> git tree:       https://github.com/zhuyj/linux null-ptr-deref_kernel_sock_shutdown
> console output: https://syzkaller.appspot.com/x/log.txt?x=104669a6580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=8dc2c248e04d231d
> dashboard link: https://syzkaller.appspot.com/bug?extid=d8f76778263ab65c2b21
> compiler:       Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
>
> Note: no patches were applied.

--
Best Regards,
Yanjun.Zhu