netdev - Re: [PATCH v2 bpf] bpf: Disable migration in nf_hook_run

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aIAYrGxkWZyfiwYh@strlen.de>
Date: Wed, 23 Jul 2025 01:03:17 +0200
From: Florian Westphal <fw@...len.de>
To: Kuniyuki Iwashima <kuniyu@...gle.com>
Cc: Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Andrii Nakryiko <andrii@...nel.org>, Daniel Xu <dxu@...uu.xyz>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Jozsef Kadlecsik <kadlec@...filter.org>,
	Kuniyuki Iwashima <kuni1840@...il.com>, bpf@...r.kernel.org,
	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
	syzbot+40f772d37250b6d10efc@...kaller.appspotmail.com
Subject: Re: [PATCH v2 bpf] bpf: Disable migration in nf_hook_run_bpf().

Kuniyuki Iwashima <kuniyu@...gle.com> wrote:
> syzbot reported that the netfilter bpf prog can be called without
> migration disabled in xmit path.
> 
> Then the assertion in __bpf_prog_run() fails, triggering the splat
> below. [0]
> 
> Let's use bpf_prog_run_pin_on_cpu() in nf_hook_run_bpf().

Acked-by: Florian Westphal <fw@...len.de>