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Sat, 14 Nov 2026 08:34:22 -0800 (PST) Received: from localhost ([153.61.198.253]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8bed2b190cfsm2173447b3a.51.2026.11.14.08.34.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 14 Nov 2026 08:34:21 -0800 (PST) Content-Type: text/plain; charset=UTF-8 Date: Sat, 14 Nov 2026 16:34:20 +0000 Message-Id: Cc: "Eric Dumazet" , "Neal Cardwell" , "Kuniyuki Iwashima" , "David S . Miller" , "Jakub Kicinski" , "Paolo Abeni" , "Simon Horman" , "Daniel Borkmann" , , , Subject: Re: [PATCH] bpf, sockmap: fix cork data loss after redirect From: "Alexei Starovoitov" To: =?utf-8?q?=C3=96mer_Mete_Kaya?= , "John Fastabend" , "Jakub Sitnicki" , "Jiayuan Chen" In-Reply-To: <20261114115222.180345-1-omermetekaya0@gmail.com> References: <20261114115222.180345-1-omermetekaya0@gmail.com> Content-Transfer-Encoding: 8bit X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 On Sat, Nov 14, 2026 at 03:46 AM Ömer Mete Kaya wrote: > In tcp_bpf_send_verdict(), when a corked message is redirected via > __SK_REDIRECT, the cork cleanup path unconditionally frees the entire > message and sets msg to NULL, even when only a partial send was > performed (tosend < total msg size due to apply_bytes). It's fixed already. See bpf tree: commit 13c41b87e4a7 ("bpf, sockmap: Keep the rest of the cork after a redirect") tcp_bpf_send_verdict() puts the rest back into psock->cork and goes to more_data. pw-bot: cr