linux-kernel - Re: [PATCH v4 0/2] bpf: Fix verifier crash on BPF

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Message-Id: 
 <175935300926.2619259.6844027797276527455.git-patchwork-notify@kernel.org>
Date: Wed, 01 Oct 2025 21:10:09 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Brahmajit Das <listout@...tout.xyz>
Cc: andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org,
 daniel@...earbox.net, eddyz87@...il.com, haoluo@...gle.com,
 john.fastabend@...il.com, jolsa@...nel.org, kpsingh@...nel.org,
 linux-kernel@...r.kernel.org, martin.lau@...ux.dev, sdf@...ichev.me,
 song@...nel.org, syzbot+d36d5ae81e1b0a53ef58@...kaller.appspotmail.com,
 syzkaller-bugs@...glegroups.com, yonghong.song@...ux.dev
Subject: Re: [PATCH v4 0/2] bpf: Fix verifier crash on BPF_NEG with pointer
 register

Hello:

This series was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@...nel.org>:

On Thu,  2 Oct 2025 00:47:37 +0530 you wrote:
> This patch fixes a crash in the BPF verifier triggered when the BPF_NEG
> operation is applied to a pointer-typed register. The verifier now
> checks that the destination register is not a pointer before performing
> the operation.
> 
> Tested with syzkaller reproducer and new BPF sefltest.
> Closes: https://syzkaller.appspot.com/bug?extid=d36d5ae81e1b0a53ef58
> 
> [...]

Here is the summary with links:
  - [v4,1/2] bpf: Skip scalar adjustment for BPF_NEG if dst is a pointer
    https://git.kernel.org/bpf/bpf/c/34904582b502
  - [v4,2/2] selftests/bpf: Add test for BPF_NEG alu on CONST_PTR_TO_MAP
    https://git.kernel.org/bpf/bpf/c/8709c1685220

You are awesome, thank you!
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