linux-kernel - Re: [PATCH bpf 1/2] bpf: Fix truncated dmabuf iterator reads

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Message-Id: 
 <176535300655.493455.11967888577336619443.git-patchwork-notify@kernel.org>
Date: Wed, 10 Dec 2025 07:50:06 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: T.J. Mercier <tjmercier@...gle.com>
Cc: yonghong.song@...ux.dev, ast@...nel.org, daniel@...earbox.net,
 andrii@...nel.org, martin.lau@...ux.dev, eddyz87@...il.com, song@...nel.org,
 john.fastabend@...il.com, kpsingh@...nel.org, sdf@...ichev.me,
 haoluo@...gle.com, jolsa@...nel.org, shuah@...nel.org, bpf@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
 android-mm@...gle.com, christian.koenig@....com, sumit.semwal@...aro.org,
 linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 linaro-mm-sig@...ts.linaro.org
Subject: Re: [PATCH bpf 1/2] bpf: Fix truncated dmabuf iterator reads

Hello:

This series was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@...nel.org>:

On Wed,  3 Dec 2025 16:03:47 -0800 you wrote:
> If there is a large number (hundreds) of dmabufs allocated, the text
> output generated from dmabuf_iter_seq_show can exceed common user buffer
> sizes (e.g. PAGE_SIZE) necessitating multiple start/stop cycles to
> iterate through all dmabufs. However the dmabuf iterator currently
> returns NULL in dmabuf_iter_seq_start for all non-zero pos values, which
> results in the truncation of the output before all dmabufs are handled.
> 
> [...]

Here is the summary with links:
  - [bpf,1/2] bpf: Fix truncated dmabuf iterator reads
    https://git.kernel.org/bpf/bpf/c/234483565dbb
  - [bpf,2/2] selftests/bpf: Add test for truncated dmabuf_iter reads
    https://git.kernel.org/bpf/bpf/c/9489d457d48b

You are awesome, thank you!
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