From: patchwork-bot+netdevbpf@kernel.org
To: Varun R Mallya <varunrmallya@gmail.com>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
memxor@gmail.com, yonghong.song@linux.dev, jolsa@kernel.org,
rostedt@goodmis.org, mhiramat@kernel.org,
linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org
Subject: Re: [PATCH bpf v3 1/2] bpf: Reject sleepable kprobe_multi programs at attach time
Date: Thu, 02 Apr 2026 16:50:07 +0000 [thread overview]
Message-ID: <177514860732.529348.7826737904742910634.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260401191126.440683-1-varunrmallya@gmail.com>
Hello:
This series was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@kernel.org>:
On Thu, 2 Apr 2026 00:41:25 +0530 you wrote:
> kprobe.multi programs run in atomic/RCU context and cannot sleep.
> However, bpf_kprobe_multi_link_attach() did not validate whether the
> program being attached had the sleepable flag set, allowing sleepable
> helpers such as bpf_copy_from_user() to be invoked from a non-sleepable
> context.
>
> This causes a "sleeping function called from invalid context" splat:
>
> [...]
Here is the summary with links:
- [bpf,v3,1/2] bpf: Reject sleepable kprobe_multi programs at attach time
https://git.kernel.org/bpf/bpf/c/eb7024bfcc5f
- [bpf,v3,2/2] selftests/bpf: Add test to ensure kprobe_multi is not sleepable
(no matching commit)
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-04-02 16:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-01 19:11 [PATCH bpf v3 1/2] bpf: Reject sleepable kprobe_multi programs at attach time Varun R Mallya
2026-04-01 19:11 ` [PATCH bpf v3 2/2] selftests/bpf: Add test to ensure kprobe_multi is not sleepable Varun R Mallya
2026-04-01 22:50 ` Kumar Kartikeya Dwivedi
2026-04-02 9:46 ` Jiri Olsa
2026-04-06 20:11 ` Kumar Kartikeya Dwivedi
2026-04-02 4:13 ` Leon Hwang
2026-04-01 22:45 ` [PATCH bpf v3 1/2] bpf: Reject sleepable kprobe_multi programs at attach time Kumar Kartikeya Dwivedi
2026-04-02 4:13 ` Leon Hwang
2026-04-02 9:47 ` Jiri Olsa
2026-04-02 16:50 ` patchwork-bot+netdevbpf [this message]
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