Re: [PATCH]selftests/powerpc: skip tests for unavailable mitigations.
flat view
From: Nageswara Sastry <hidden>
Date: 2021-12-14 04:28:02
On 13/12/21 10:12 pm, Sachin Sant wrote:
Mitigation patching test iterates over a set of mitigations irrespective of whether a certain mitigation is supported/available in the kernel. This causes following messages on a kernel where some mitigations are unavailable: Spawned threads enabling/disabling mitigations ... cat: entry_flush: No such file or directory cat: uaccess_flush: No such file or directory Waiting for timeout ... OK This patch adds a check for available mitigations in the kernel. Reported-by: Nageswara R Sastry <redacted> Signed-off-by: Sachin Sant <redacted>
Tested-by: Nageswara R Sastry <redacted>
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--- diff -Naurp aa/tools/testing/selftests/powerpc/security/mitigation-patching.sh bb/tools/testing/selftests/powerpc/security/mitigation-patching.sh--- aa/tools/testing/selftests/powerpc/security/mitigation-patching.sh 2021-12-13 10:17:05.714127154 -0500 +++ bb/tools/testing/selftests/powerpc/security/mitigation-patching.sh 2021-12-13 10:19:32.575315913 -0500@@ -44,7 +44,10 @@ mitigations="barrier_nospec stf_barrier for m in $mitigations do - do_one "$m" & + if [[ -f /sys/kernel/debug/powerpc/$m ]] + then + do_one "$m" & + fi done echo "Spawned threads enabling/disabling mitigations ..."
-- Thanks and Regards R.Nageswara Sastry