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[146.241.68.231]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43d82efdffdsm193576985e9.18.2025.04.01.03.33.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 01 Apr 2025 03:33:11 -0700 (PDT) Message-ID: Date: Tue, 1 Apr 2025 12:33:09 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH bpf] bpf: add missing ops lock around dev_xdp_attach_link To: Stanislav Fomichev , bpf@vger.kernel.org, netdev@vger.kernel.org Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, song@kernel.org, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, haoluo@google.com, jolsa@kernel.org, linux-kernel@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, horms@kernel.org, hawk@kernel.org, syzbot+08936936fe8132f91f1a@syzkaller.appspotmail.com References: <20250331142814.1887506-1-sdf@fomichev.me> Content-Language: en-US From: Paolo Abeni In-Reply-To: <20250331142814.1887506-1-sdf@fomichev.me> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 3/31/25 4:28 PM, Stanislav Fomichev wrote: > Syzkaller points out that create_link path doesn't grab ops lock, > add it. > > Cc: Jakub Kicinski > Reported-by: syzbot+08936936fe8132f91f1a@syzkaller.appspotmail.com > Closes: https://lore.kernel.org/bpf/67e6b3e8.050a0220.2f068f.0079.GAE@google.com/ > Fixes: 97246d6d21c2 ("net: hold netdev instance lock during ndo_bpf") > Signed-off-by: Stanislav Fomichev LGTM, but are there any special reasons to get this via the bpf tree? It looks like 'net' material to me?!? Thanks, Paolo