From: Brendan Jackman <jackmanb@google.com>
Date: Tue, 11 Mar 2025 13:18:20 +0000 (+0000)
Subject: selftests/mm: drop unnecessary sudo usage
X-Git-Tag: v6.15-rc1~81^2~238
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e9269b2cc403b7681980e7219cf2dc339fca8d38;p=thirdparty%2Fkernel%2Flinux.git

selftests/mm: drop unnecessary sudo usage

This script must be run as root anyway (see all the writing to privileged
files in /proc etc).

Remove the unnecessary use of sudo to avoid breaking on single-user
systems that don't have sudo.  This also avoids confusing readers.

Link: https://lkml.kernel.org/r/20250311-mm-selftests-v4-9-dec210a658f5@google.com
Signed-off-by: Brendan Jackman <jackmanb@google.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh
index 4b5e45a102197..31a576d70b572 100755
--- a/tools/testing/selftests/mm/run_vmtests.sh
+++ b/tools/testing/selftests/mm/run_vmtests.sh
@@ -402,7 +402,7 @@ CATEGORY="madv_populate" run_test ./madv_populate
 
 if [ -x ./memfd_secret ]
 then
-(echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix
+(echo 0 > /proc/sys/kernel/yama/ptrace_scope 2>&1) | tap_prefix
 CATEGORY="memfd_secret" run_test ./memfd_secret
 fi