From: "Paul E. McKenney" <paulmck@xxxxxxxxxx> Using --kcsan when the compiler does not support KCSAN results in this: :CONFIG_KCSAN=y: improperly set :CONFIG_KCSAN_REPORT_ONCE_IN_MS=100000: improperly set :CONFIG_KCSAN_VERBOSE=y: improperly set :CONFIG_KCSAN_INTERRUPT_WATCHER=y: improperly set Clean KCSAN run in /home/git/linux-rcu/tools/testing/selftests/rcutorture/res/2020.06.16-09.53.16 This is a bit obtuse, so this commit adds checks resulting in this: :CONFIG_KCSAN=y: improperly set :CONFIG_KCSAN_REPORT_ONCE_IN_MS=100000: improperly set :CONFIG_KCSAN_VERBOSE=y: improperly set :CONFIG_KCSAN_INTERRUPT_WATCHER=y: improperly set Compiler or architecture does not support KCSAN! Did you forget to switch your compiler with --kmake-arg CC=<cc-that-supports-kcsan>? Suggested-by: Marco Elver <elver@xxxxxxxxxx> Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx> Acked-by: Marco Elver <elver@xxxxxxxxxx> --- tools/testing/selftests/rcutorture/bin/kvm-recheck.sh | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh index 357899c..840a467 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh @@ -44,7 +44,8 @@ do then echo QEMU killed fi - configcheck.sh $i/.config $i/ConfigFragment + configcheck.sh $i/.config $i/ConfigFragment > $T 2>&1 + cat $T if test -r $i/Make.oldconfig.err then cat $i/Make.oldconfig.err @@ -73,7 +74,11 @@ do done if test -f "$rd/kcsan.sum" then - if test -s "$rd/kcsan.sum" + if grep -q CONFIG_KCSAN=y $T + then + echo "Compiler or architecture does not support KCSAN!" + echo Did you forget to switch your compiler with '--kmake-arg CC=<cc-that-supports-kcsan>'? + elif test -s "$rd/kcsan.sum" then echo KCSAN summary in $rd/kcsan.sum else -- 2.9.5
