Linux Kernel Selftest development
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From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Hajime Tazaki <thehajime@gmail.com>,
	linux-mm@kvack.org, liam@infradead.org, rbm@suse.com,
	akpm@linux-foundation.org, luto@amacapital.net,
	brendan.jackman@linux.dev, liuhangbin@gmail.com, corbet@lwn.net,
	kees@kernel.org, ljs@kernel.org, broonie@kernel.org,
	mhocko@suse.com, rppt@kernel.org, shuah@kernel.org,
	surenb@google.com, vbabka@kernel.org, wad@chromium.org,
	linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org,
	linux-um@lists.infradead.org
Cc: geert@linux-m68k.org, daniel@thingy.jp
Subject: Re: [PATCH v3 1/3] selftests: kselftest: avoid cd - in runner
Date: Mon, 28 Sep 2026 11:25:37 +0200	[thread overview]
Message-ID: <67722705-d45b-4474-90dc-e2402d766688@kernel.org> (raw)
In-Reply-To: <20260926010819.604346-2-thehajime@gmail.com>

On 9/26/26 03:08, Hajime Tazaki wrote:
> The kselftest runner currently uses `cd -` to restore its working
> directory after running a test.
> 
> This is not supported by the minimal BusyBox hush shell used by some
> NOMMU targets. Store the original directory explicitly and restore it
> with a quoted path instead.
> 
> This also avoids printing the directory change performed by `cd -` and
> handles paths containing whitespace correctly.
> 
> Cc: Shuah Khan <shuah@kernel.org>
> Cc: Kees Cook <kees@kernel.org>
> Cc: Andy Lutomirski <luto@amacapital.net>
> Cc: Will Drewry <wad@chromium.org>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Brendan Jackman <brendan.jackman@linux.dev>
> Cc: Hangbin Liu <liuhangbin@gmail.com>
> Cc: "Ricardo B. Marliere" <rbm@suse.com>
> Cc: linux-kselftest@vger.kernel.org
> Cc: linux-um@lists.infradead.org
> Cc: linux-mm@kvack.org
> Signed-off-by: Hajime Tazaki <thehajime@gmail.com>
> ---

Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>

-- 
Cheers,

David

  reply	other threads:[~2026-09-28  9:25 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-26  1:08 [PATCH v3 0/3] support kselftest on nommu platform Hajime Tazaki
2026-09-26  1:08 ` [PATCH v3 1/3] selftests: kselftest: avoid cd - in runner Hajime Tazaki
2026-09-28  9:25   ` David Hildenbrand (Arm) [this message]
2026-09-28 11:02   ` Lorenzo Stoakes (ARM)
2026-09-28 17:27   ` Pedro Falcato
2026-09-28 18:16     ` Pedro Falcato
2026-09-29  1:05       ` Hajime Tazaki
2026-09-26  1:08 ` [PATCH v3 2/3] selftests: run tests on nommu architecture Hajime Tazaki
2026-09-28  7:44   ` Johannes Berg
2026-09-28 11:00     ` Lorenzo Stoakes (ARM)
2026-09-28 12:32       ` Johannes Berg
2026-09-28 16:23         ` Lorenzo Stoakes (ARM)
2026-09-29  1:03     ` Hajime Tazaki
2026-09-28 11:03   ` Lorenzo Stoakes (ARM)
2026-09-26  1:08 ` [PATCH v3 3/3] selftests/nommu: add nommu mmap and mremap behavior tests Hajime Tazaki
2026-09-28 12:34   ` Mark Brown
2026-09-29  1:06     ` Hajime Tazaki

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