From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793058608; b=nXX8dnYb4kjKJydPB64nUax11OL6yKND5Fk7y+Y+I8tc2w6yRdysbAV6XD4EX7uZBePW lVJbsxMwC4j70AkXhq4mTZvdkNlCOY3mVcXBCagkuRki8a7xnzy4szWqw0sY1/NAEdIUN WgFZBiqkr46M3AnSV1/QfPZXSFjAsyT9WNzzsMMID/oiCkrkVdaREnkuyPKGIesT9ZtW4 yfl3stavHaR5icFgJh0T3Grd9qtOw67dzgiTmhdZYMD700Z7zVkIemjB7NrMGkv0LAS+u IWAuwcVvGShxBQmui3IImbWF5G0iTrLqInFMu4D1HnHr5La0K/gbmHRc9bm5Um6RLaw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793058608; h=Received:DKIM-Signature:Received:Content-Type:MIME-Version: Content-Transfer-Encoding:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; bh=j+tQUJNC3pxOYVfCPj/snN9rATcq8LweVo7HPYOvhcM=; b=FLp/KUjinMnD9ezg5WZoWV6vBBLvlIdJtkxcZzkcpHXroaK5DRy5XM73Xy2u0te13q6/ DqgLSRVgnavvcx3zME3xtLBxIEqttMQSzp8OR00OZzOgmFjXSwJjWp4A2obt6HD24Y6/O Jg2PLa72dzCp88SS6msEy/ovfpQP9gBD+fPNXb7lagH/yLkhm2L55uL5JYe9dRsZnOBSg +/i9DUWiWUNVDU9Z9vkkIDrjfBWbNTM5DB1TfA2HptKCtCRKTBCcDxWqLsSs2zsc60lCi 8CjXJqyoIDP5V6PsRnq2/+HqkJ9LUdrmJUUbP3mqmad2Aojeqll40OSgNzhVxxt5nBQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=g1gCLwsG; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B8823606A31A for ; Mon, 26 Oct 2026 23:50:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=g1gCLwsG Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D0181F01825; Mon, 26 Oct 2026 23:50:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793058607; bh=j+tQUJNC3pxOYVfCPj/snN9rATcq8LweVo7HPYOvhcM=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=g1gCLwsG2dtn4mTAg9x1IbswCbISwzSgXkE3MwenRVe05wO6CjS033hSk7YkEIEv9 hj1SpE9f/I+iNXnP+onWbMQP6wlksnve4Xp37EIt/uTv9Bb4inX0Sqn7P2trkRkltg bzujNJH1eoBnMILzGobfGG8ki/Hx38xrDZMLQqdFf2MQuL0ao6yJDr9tR3GvcAjufR kx48YQMQenQcMTkVgN/RPny2n3/OldCbiPHAOlKSLRUAyi3anHkVXv4bnLpq6p8KvY W0gf4V9HbLRWERo90X+bj8pMbklfjp4pzq6NkVYUx2OKADcxcX+BbBUZbheFD6zW5p hhT/D2cF112SQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 443673AA80F1; Mon, 26 Oct 2026 23:50:07 +0000 (UTC) Content-Type: text/plain; charset="utf-8" X-Mailing-List: netdev@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net] ipmr: clear skb->cb[] in reg_vif_xmit() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179305860607.3465814.14170093135033685897.git-patchwork-notify@kernel.org> Date: Mon, 26 Oct 2026 23:50:06 +0000 References: <20261025111337.142787-1-edumazet@kernel.org> In-Reply-To: <20261025111337.142787-1-edumazet@kernel.org> To: Eric Dumazet Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, willemb@google.com, dsahern@kernel.org, idosch@nvidia.com, horms@kernel.org, netdev@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Sun, 25 Oct 2026 12:13:37 +0100 you wrote: > reg_vif_xmit() hands the skb to ipmr_cache_report() as an > IGMPMSG_WHOLEPKT report. When the mroute socket has IP_PKTINFO > enabled, ipmr_cache_report() calls ipv4_pktinfo_prepare() on the > original skb, which reads skb->cb[] as IPCB. > > By the time the pimreg device transmits the packet, skb->cb[] is not > IPCB anymore: qdisc_pkt_len_init() overwrites IPCB(skb)->iif with > qdisc_skb_cb(skb)->pkt_len, and any qdisc installed on the device or a > tc BPF program writing skb->cb[] fills the area holding the IP options > and IPCB(skb)->flags. > > [...] Here is the summary with links: - [net] ipmr: clear skb->cb[] in reg_vif_xmit() https://git.kernel.org/netdev/net/c/389952e8776a You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html