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Fri, 25 Sep 2026 18:08:25 -0700 (PDT) Received: from ikb-h07-29-noble.in.iijlab.net ([202.214.97.5]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a0974ec5dfsm13169486a91.3.2026.09.25.18.08.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Sep 2026 18:08:24 -0700 (PDT) Received: by ikb-h07-29-noble.in.iijlab.net (Postfix, from userid 1010) id 99D8516C9C96; Sat, 26 Sep 2026 10:08:23 +0900 (JST) From: Hajime Tazaki To: linux-mm@kvack.org, liam@infradead.org, rbm@suse.com, akpm@linux-foundation.org, luto@amacapital.net, brendan.jackman@linux.dev, david@kernel.org, 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, Hajime Tazaki Subject: [PATCH v3 1/3] selftests: kselftest: avoid cd - in runner Date: Sat, 26 Sep 2026 10:08:17 +0900 Message-ID: <20260926010819.604346-2-thehajime@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260926010819.604346-1-thehajime@gmail.com> References: <20260926010819.604346-1-thehajime@gmail.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 Cc: Kees Cook Cc: Andy Lutomirski Cc: Will Drewry Cc: Mark Brown Cc: Brendan Jackman Cc: Hangbin Liu Cc: "Ricardo B. Marliere" Cc: linux-kselftest@vger.kernel.org Cc: linux-um@lists.infradead.org Cc: linux-mm@kvack.org Signed-off-by: Hajime Tazaki --- tools/testing/selftests/kselftest/runner.sh | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh index 311811dc55a0..8fc1018d6fec 100644 --- a/tools/testing/selftests/kselftest/runner.sh +++ b/tools/testing/selftests/kselftest/runner.sh @@ -130,6 +130,7 @@ run_one() return $KSFT_FAIL fi fi + OLDDIR=$(pwd) cd `dirname $TEST` > /dev/null (((( tap_timeout "$cmd" 2>&1; echo $? >&3) | tap_prefix >&4) 3>&1) | @@ -147,7 +148,7 @@ run_one() *) ktap_test_fail "$TEST_HDR_MSG # exit=$rc";; esac - cd - >/dev/null + cd "$OLDDIR" >/dev/null fi return $rc -- 2.43.0