linux-kernel - Re: [syzbot] [bpf?] possible deadlock in trie_delete

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Message-ID: <CAP01T7525zDpL8nhsLLULCK1Qzw8wVCmHuCX_81Z_HaQAs-q4g@mail.gmail.com>
Date: Fri, 9 May 2025 01:39:44 +0200
From: Kumar Kartikeya Dwivedi <memxor@...il.com>
To: syzbot <syzbot+9d95beb2a3c260622518@...kaller.appspotmail.com>
Cc: andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org, 
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Subject: Re: [syzbot] [bpf?] possible deadlock in trie_delete_elem

#syz fix: bpf: Convert lpm_trie.c to rqspinlock

On Thu, 8 May 2025 at 09:21, syzbot
<syzbot+9d95beb2a3c260622518@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 47979314c0fe245ed54306e2f91b3f819c7c0f9f
> Author: Kumar Kartikeya Dwivedi <memxor@...il.com>
> Date:   Sun Mar 16 04:05:37 2025 +0000
>
>     bpf: Convert lpm_trie.c to rqspinlock
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=140598f4580000
> start commit:   c2933b2befe2 Merge tag 'net-6.14-rc1' of git://git.kernel...
> git tree:       net-next
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d033b14aeef39158
> dashboard link: https://syzkaller.appspot.com/bug?extid=9d95beb2a3c260622518
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=108e1724580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=177035f8580000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: bpf: Convert lpm_trie.c to rqspinlock
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>