netdev - Re: [PATCH net-next] selftests: drv-net: xdp: Fix register spill error with clang 20

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Message-Id: 
 <176317211824.1905277.15336116375736366070.git-patchwork-notify@kernel.org>
Date: Sat, 15 Nov 2025 02:01:58 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Dimitri Daskalakis <dimitri.daskalakis1@...il.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, horms@...nel.org, shuah@...nel.org, ast@...nel.org,
 daniel@...earbox.net, hawk@...nel.org, john.fastabend@...il.com,
 sdf@...ichev.me, mohsin.bashr@...il.com, martin.lau@...nel.org,
 ameryhung@...il.com, netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
 bpf@...r.kernel.org
Subject: Re: [PATCH net-next] selftests: drv-net: xdp: Fix register spill
 error
 with clang 20

Hello:

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

On Wed, 12 Nov 2025 20:31:02 -0800 you wrote:
> On clang 20.1.8 the XDP program fails to load with a register spill error.
> Since hdr_len is a __u32, the compiler decided it only needed the lower
> 32-bits of ctx->data, which later triggers the register spill verifier
> error.
> 
> Suggested-by: Martin KaFai Lau <martin.lau@...nel.org>
> Signed-off-by: Dimitri Daskalakis <dimitri.daskalakis1@...il.com>
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> 
> [...]

Here is the summary with links:
  - [net-next] selftests: drv-net: xdp: Fix register spill error with clang 20
    https://git.kernel.org/netdev/net-next/c/e1215d1d38c0

You are awesome, thank you!
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