From: Will Deacon <will@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Thiago Jung Bauermann <thiago.bauermann@linaro.org>,
Mark Brown <broonie@kernel.org>, Breno Leitao <leitao@debian.org>
Cc: kernel-team@android.com, Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kernel-team@meta.com
Subject: Re: [PATCH v2] arm64/gcs: Fix error handling in arch_set_shadow_stack_status()
Date: Tue, 3 Feb 2026 20:29:01 +0000 [thread overview]
Message-ID: <177011102209.2472980.4751215527771350608.b4-ty@kernel.org> (raw)
In-Reply-To: <20260202-arm64_cgs-v2-1-e6a837edf021@debian.org>
On Mon, 02 Feb 2026 10:32:51 -0800, Breno Leitao wrote:
> alloc_gcs() returns an error-encoded pointer on failure, which comes
> from do_mmap(), not NULL.
>
> The current NULL check fails to detect errors, which could lead to using
> an invalid GCS address.
>
> Use IS_ERR_VALUE() to properly detect errors, consistent with the
> check in gcs_alloc_thread_stack().
>
> [...]
Applied to arm64 (for-next/core), thanks!
[1/1] arm64/gcs: Fix error handling in arch_set_shadow_stack_status()
https://git.kernel.org/arm64/c/53c998527ffa
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
prev parent reply other threads:[~2026-02-03 20:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-02 18:32 Breno Leitao
2026-02-03 20:29 ` Will Deacon [this message]
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