Re: [PATCH net-next v3] net: preserve rps_default_mask on failed writes

[patchwork-bot+netdevbpf@kernel.org]

Hello:

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

On Sun, 8 Nov 2026 13:19:12 +0000 you wrote:
> rps_default_mask_sysctl() passes the live per-netns mask to
> cpumask_parse(). bitmap_parse() stores chunks as it scans from right to
> left, so a later error can leave lower chunks changed.
> rps_cpumask_housekeeping() also intersects its input in place before
> returning -EINVAL when no housekeeping CPUs remain.
> 
> Consequently, a failed write changes both the value read from the sysctl
> and the default copied to RX queues created later. On a four-CPU VM,
> after setting the mask to 1, writing zz,00000003 failed with EOVERFLOW
> but changed the mask to 3. Writing a mask containing only isolated CPUs
> failed with EINVAL but changed it to 0. No kernel modification or error
> injection was needed to reproduce either case.
> 
> [...]

Here is the summary with links:
  - [net-next,v3] net: preserve rps_default_mask on failed writes
    https://git.kernel.org/netdev/net-next/c/b39a8c891523

You are awesome, thank you!
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