linux-kernel - [PATCH 4.9 264/329] selftests: Print the test were running to /dev/kmsg

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180528100303.900535222@linuxfoundation.org>
Date:   Mon, 28 May 2018 12:03:13 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Michael Ellerman <mpe@...erman.id.au>,
        Shuah Khan <shuahkh@....samsung.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.9 264/329] selftests: Print the test were running to /dev/kmsg

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Ellerman <mpe@...erman.id.au>

[ Upstream commit 88893cf787d3062c631cc20b875068eb11756e03 ]

Some tests cause the kernel to print things to the kernel log
buffer (ie. printk), in particular oops and warnings etc. However when
running all the tests in succession it's not always obvious which
test(s) caused the kernel to print something.

We can narrow it down by printing which test directory we're running
in to /dev/kmsg, if it's writable.

Example output:

  [  170.149149] kselftest: Running tests in powerpc
  [  305.300132] kworker/dying (71) used greatest stack depth: 7776 bytes
                 left
  [  808.915456] kselftest: Running tests in pstore

Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Shuah Khan <shuahkh@....samsung.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 tools/testing/selftests/Makefile |    1 +
 1 file changed, 1 insertion(+)

--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -94,6 +94,7 @@ ifdef INSTALL_PATH
 	for TARGET in $(TARGETS); do \
 		echo "echo ; echo Running tests in $$TARGET" >> $(ALL_SCRIPT); \
 		echo "echo ========================================" >> $(ALL_SCRIPT); \
+		echo "[ -w /dev/kmsg ] && echo \"kselftest: Running tests in $$TARGET\" >> /dev/kmsg" >> $(ALL_SCRIPT); \
 		echo "cd $$TARGET" >> $(ALL_SCRIPT); \
 		make -s --no-print-directory -C $$TARGET emit_tests >> $(ALL_SCRIPT); \
 		echo "cd \$$ROOT" >> $(ALL_SCRIPT); \