From: Kees Cook <kees@kernel.org>
To: Andrei Vagin <avagin@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Cyrill Gorcunov <gorcunov@gmail.com>,
Mike Rapoport <rppt@kernel.org>,
Alexander Mikhalitsyn <alexander@mihalicyn.com>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, criu@lists.linux.dev,
Chen Ridong <chenridong@huawei.com>,
Christian Brauner <brauner@kernel.org>,
David Hildenbrand <david@kernel.org>,
Eric Biederman <ebiederm@xmission.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Michal Koutny <mkoutny@suse.com>
Subject: Re: [PATCH 4/4] selftests/exec: add test for HWCAP inheritance
Date: Thu, 12 Feb 2026 15:57:27 -0800 [thread overview]
Message-ID: <202602121557.5C1249F@keescook> (raw)
In-Reply-To: <20260209190605.1564597-5-avagin@google.com>
On Mon, Feb 09, 2026 at 07:06:05PM +0000, Andrei Vagin wrote:
> Verify that HWCAPs are correctly inherited/preserved across execve() when
> modified via prctl(PR_SET_MM_AUXV).
>
> The test performs the following steps:
> * reads the current AUXV using prctl(PR_GET_AUXV);
> * finds an HWCAP entry and toggles its most significant bit;
> * replaces the AUXV of the current process with the modified one using
> prctl(PR_SET_MM, PR_SET_MM_AUXV);
> * executes itself to verify that the new program sees the modified HWCAP
> value.
>
> Signed-off-by: Andrei Vagin <avagin@google.com>
Reviewed-by: Kees Cook <kees@kernel.org>
--
Kees Cook
next prev parent reply other threads:[~2026-02-12 23:57 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-09 19:06 [PATCH 0/4 v3] exec: inherit HWCAPs from the parent process Andrei Vagin
2026-02-09 19:06 ` [PATCH 1/4] binfmt_elf_fdpic: fix AUXV size calculation for ELF_HWCAP3 and ELF_HWCAP4 Andrei Vagin
2026-02-10 19:59 ` Alexander Mikhalitsyn
2026-02-09 19:06 ` [PATCH 2/4] exec: inherit HWCAPs from the parent process Andrei Vagin
2026-02-10 20:13 ` Alexander Mikhalitsyn
2026-02-12 23:49 ` Kees Cook
2026-02-09 19:06 ` [PATCH 3/4] mm: synchronize saved_auxv access with arg_lock Andrei Vagin
2026-02-10 9:48 ` Michal Koutný
2026-02-10 20:36 ` Alexander Mikhalitsyn
2026-02-11 1:08 ` Andrei Vagin
2026-02-12 23:53 ` Kees Cook
2026-02-09 19:06 ` [PATCH 4/4] selftests/exec: add test for HWCAP inheritance Andrei Vagin
2026-02-10 20:37 ` Alexander Mikhalitsyn
2026-02-12 23:57 ` Kees Cook [this message]
2026-02-10 19:28 ` [PATCH 0/4 v3] exec: inherit HWCAPs from the parent process Cyrill Gorcunov
2026-02-17 18:01 [PATCH 0/4 v4] " Andrei Vagin
2026-02-17 18:01 ` [PATCH 4/4] selftests/exec: add test for HWCAP inheritance Andrei Vagin
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