Re: [syzbot] [bpf?] [net?] possible deadlock in __lock_task_sighand (2)

Tetsuo Handa
2024-05-11T05:59:27Z

This bug report has fix commit but syzbot found a reproducer with that fix commit applied.
That is, something is still wrong. Any comments from BPF people on
https://lkml.kernel.org/r/8dc01a83-1bea-4e3c-a04d-9a9bd422a5b3@I-love.SAKURA.ne.jp ?

On 2024/05/11 14:39, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 3e9bc0472b91 Merge branch 'bpf: Add BPF_PROG_TYPE_CGROUP_S..
> git tree: bpf
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=1372d16c980000
> kernel config: https://syzkaller.appspot.com/x/.config?x=98d5a8e00ed1044a
> dashboard link: https://syzkaller.appspot.com/bug?extid=34267210261c2cbba2da
> compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=116aa704980000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10be0fb8980000