Re: [PATCH net] net: skbuff: don't leave stale bytes in skb_copy_and_csum_bits()

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Wed, 07 Oct 2026 17:29:34 +0000 you wrote:
> When skb_copy_and_csum_bits() reaches unreadable frags it returns 0
> after copying only the linear part, and the rest of the caller's buffer
> is left as it was.  The callers copy into a buffer that is about to go
> out on the wire: an ICMP error quoting the offending packet, or a
> driver's TX bounce buffer in skb_copy_and_csum_dev().  Neither buffer
> is zeroed beforehand, so whatever was in memory there gets sent.
> 
> [...]

Here is the summary with links:
  - [net] net: skbuff: don't leave stale bytes in skb_copy_and_csum_bits()
    https://git.kernel.org/netdev/net/c/ab9414ed70bd

You are awesome, thank you!
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