linux-kernel - [PATCH rcu 06/13] torture: Provide EXPERT Kconfig option for arm64 KCSAN torture.sh runs

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Message-Id: <20250709104414.15618-7-neeraj.upadhyay@kernel.org>
Date: Wed,  9 Jul 2025 16:14:07 +0530
From: neeraj.upadhyay@...nel.org
To: rcu@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	paulmck@...nel.org,
	joelagnelf@...dia.com,
	frederic@...nel.org,
	boqun.feng@...il.com,
	urezki@...il.com,
	rostedt@...dmis.org,
	mathieu.desnoyers@...icios.com,
	jiangshanlai@...il.com,
	qiang.zhang1211@...il.com,
	neeraj.iitr10@...il.com,
	neeraj.upadhyay@....com,
	"Neeraj Upadhyay (AMD)" <neeraj.upadhyay@...nel.org>,
	Marco Elver <elver@...gle.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	kasan-dev@...glegroups.com,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH rcu 06/13] torture: Provide EXPERT Kconfig option for arm64 KCSAN torture.sh runs

From: "Paul E. McKenney" <paulmck@...nel.org>

The arm64 architecture requires that KCSAN-enabled kernels be built with
the CONFIG_EXPERT=y Kconfig option.  This commit therefore causes the
torture.sh script to provide this option, but only for --kcsan runs on
arm64 systems.

Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
Cc: Marco Elver <elver@...gle.com>
Cc: Dmitry Vyukov <dvyukov@...gle.com>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Cc: <kasan-dev@...glegroups.com>
Cc: <linux-arm-kernel@...ts.infradead.org>
Signed-off-by: Neeraj Upadhyay (AMD) <neeraj.upadhyay@...nel.org>
---
 tools/testing/selftests/rcutorture/bin/torture.sh | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/rcutorture/bin/torture.sh b/tools/testing/selftests/rcutorture/bin/torture.sh
index 25847042e30e..420c551b824b 100755
--- a/tools/testing/selftests/rcutorture/bin/torture.sh
+++ b/tools/testing/selftests/rcutorture/bin/torture.sh
@@ -313,6 +313,13 @@ then
 	do_scftorture=no
 fi
 
+# CONFIG_EXPERT=y is currently required for arm64 KCSAN runs.
+kcsan_expert=
+if test "${thisarch}" = aarch64
+then
+	kcsan_expert="CONFIG_EXPERT=y"
+fi
+
 touch $T/failures
 touch $T/successes
 
@@ -392,7 +399,7 @@ function torture_set {
 		then
 			chk_rdr_state="CONFIG_RCU_TORTURE_TEST_CHK_RDR_STATE=y"
 		fi
-		torture_one "$@" --kconfig "CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y ${chk_rdr_state}" $kcsan_kmake_tag $cur_kcsan_kmake_args --kcsan
+		torture_one "$@" --kconfig "CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y ${kcsan_expert} ${chk_rdr_state}" $kcsan_kmake_tag $cur_kcsan_kmake_args --kcsan
 		mv $T/last-resdir $T/last-resdir-kcsan || :
 	fi
 }
-- 
2.40.1