From: patchwork-bot+netdevbpf@kernel.org
To: Donggeun Yoo <donggeunyoo.kernel@gmail.com>
Cc: ast@kernel.org, andrii@kernel.org, catalin.marinas@arm.com,
daniel@iogearbox.net, eddyz87@gmail.com, emil@etsalapatis.com,
ihor.solodrai@linux.dev, jolsa@kernel.org, memxor@gmail.com,
mark.rutland@arm.com, martin.lau@linux.dev, puranjay@kernel.org,
shuah@kernel.org, song@kernel.org, will@kernel.org,
xukuohai@huaweicloud.com, yonghong.song@linux.dev,
bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: Re: [PATCH bpf v3 0/2] bpf, arm64: fix the exception callback's frame pointer
Date: Mon, 14 Sep 2026 05:00:06 +0000 [thread overview]
Message-ID: <178936200639.325205.5759223935386282492.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260907130624.611942-1-donggeunyoo.kernel@gmail.com>
Hello:
This series was applied to bpf/bpf.git (master)
by Alexei Starovoitov <ast@kernel.org>:
On Mon, 7 Sep 2026 22:06:22 +0900 you wrote:
> The arm64 JIT does not set BPF_REG_FP in the prologue of an exception
> callback, so the callback runs with whatever x25 held when bpf_throw()
> was called. A callback that materializes the register, for instance to
> pass the address of a local variable to a helper, then works on the
> frame of the subprogram that threw.
>
> Patch 1 sets ctx->fp_used on that path, the same fix commit b114fcee766d
> ("bpf, arm64: Fix fp initialization for exception boundary") made for
> the exception boundary. Patch 2 adds a selftest that reaches the case.
>
> [...]
Here is the summary with links:
- [bpf,v3,1/2] bpf, arm64: set up the frame pointer for the exception callback
https://git.kernel.org/bpf/bpf/c/ef1fb82f1218
- [bpf,v3,2/2] selftests/bpf: cover the exception callback using its own BPF stack
https://git.kernel.org/bpf/bpf/c/26a43a5f8c31
You are awesome, thank you!
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Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-09-14 5:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-07 13:06 Donggeun Yoo
2026-09-07 13:06 ` [PATCH bpf v3 1/2] bpf, arm64: set up the frame pointer for the exception callback Donggeun Yoo
2026-09-07 13:06 ` [PATCH bpf v3 2/2] selftests/bpf: cover the exception callback using its own BPF stack Donggeun Yoo
2026-09-07 13:43 ` [PATCH bpf v3 0/2] bpf, arm64: fix the exception callback's frame pointer Donggeun Yoo
2026-09-14 5:00 ` patchwork-bot+netdevbpf [this message]
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