From: sashiko-bot@kernel.org
To: "Josef Bacik" <josef@toxicpanda.com>
Cc: intel-wired-lan@lists.osuosl.org, linux-rdma@vger.kernel.org
Subject: Re: [PATCH net-next 9/9] net: skbuff: don't reset truesize in skb_condense() if the pull fails
Date: Thu, 08 Oct 2026 18:17:00 +0000 [thread overview]
Message-ID: <sashiko-outbox-164449@kernel.org> (raw)
In-Reply-To: <20261007-b4-pskb-pull-tail-drivers-v1-9-9512b0fb977b@toxicpanda.com>
> skb_condense() pulls all of the frag data into the head and then sets
> truesize to cover just the head, but it ignores the return value of
> __pskb_pull_tail(). If the pull failed, the frags would still be
> attached and truesize would undercount them.
>
> It can't fail today. The caller has checked that the head has room,
> that the skb isn't cloned and that the frags are readable, and pulling
> all of data_len eats every frag_list skb whole, so nothing is
> allocated. Check the result anyway and leave the skb alone on
> failure, so this stays correct if any of that changes. Use
> __skb_linearize(), which is what this pull is.
>
> Assisted-by: LLM
> Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261007-b4-pskb-pull-tail-drivers-v1-0-9512b0fb977b@toxicpanda.com?part=9
prev parent reply other threads:[~2026-10-08 18:17 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-07 18:16 [PATCH net-next 0/9] net: stop calling __pskb_pull_tail() from drivers Josef Bacik
2026-10-07 18:16 ` [PATCH net-next 1/9] net: ftmac100: check for failure when pulling in the RX header Josef Bacik
2026-10-08 18:16 ` sashiko-bot
2026-10-07 18:16 ` [PATCH net-next 2/9] net/mlx5e: check for failure when pulling the Ethernet header after XDP Josef Bacik
2026-10-08 18:16 ` sashiko-bot
2026-10-11 19:03 ` netdev-bot+sashiko
2026-10-12 21:12 ` Tariq Toukan
2026-10-07 18:16 ` [PATCH net-next 3/9] net: niu: check for failure when pulling in the RX header Josef Bacik
2026-10-08 18:17 ` sashiko-bot
2026-10-07 18:16 ` [PATCH net-next 4/9] xen/netfront: check for failure when pulling in xennet_fill_frags() Josef Bacik
2026-10-08 18:16 ` sashiko-bot
2026-10-11 19:04 ` netdev-bot+sashiko
2026-10-07 18:16 ` [PATCH net-next 5/9] e1000: use pskb_may_pull() in the 82544 TSO workaround Josef Bacik
2026-10-08 18:16 ` sashiko-bot
2026-10-07 18:16 ` [PATCH net-next 6/9] e1000e: use pskb_may_pull() in the 82571/2/3 " Josef Bacik
2026-10-08 18:16 ` sashiko-bot
2026-10-11 19:04 ` netdev-bot+sashiko
2026-10-07 18:16 ` [PATCH net-next 7/9] netxen: use pskb_may_pull() to pull excess TX frags into the head Josef Bacik
2026-10-08 18:16 ` sashiko-bot
2026-10-11 19:04 ` netdev-bot+sashiko
2026-10-07 18:16 ` [PATCH net-next 8/9] qlcnic: " Josef Bacik
2026-10-08 18:16 ` sashiko-bot
2026-10-11 19:04 ` netdev-bot+sashiko
2026-10-07 18:16 ` [PATCH net-next 9/9] net: skbuff: don't reset truesize in skb_condense() if the pull fails Josef Bacik
2026-10-08 18:17 ` sashiko-bot [this message]
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