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|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0+
#
# Run SRCU-lockdep tests and report any that fail to meet expectations.
#
# Copyright (C) 2021 Meta Platforms, Inc.
#
# Authors: Paul E. McKenney <paulmck@kernel.org>
usage () {
echo "Usage: $scriptname optional arguments:"
echo " --datestamp string"
exit 1
}
ds=`date +%Y.%m.%d-%H.%M.%S`-srcu_lockdep
scriptname="$0"
T="`mktemp -d ${TMPDIR-/tmp}/srcu_lockdep.sh.XXXXXX`"
trap 'rm -rf $T' 0
RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
PATH=${RCUTORTURE}/bin:$PATH; export PATH
. functions.sh
while test $# -gt 0
do
case "$1" in
--datestamp)
checkarg --datestamp "(relative pathname)" "$#" "$2" '^[a-zA-Z0-9._/-]*$' '^--'
ds=$2
shift
;;
*)
echo Unknown argument $1
usage
;;
esac
shift
done
nerrs=0
# Test lockdep's handling of deadlocks.
for d in 0 1
do
for t in 0 1 2 4 5
do
for c in 1 2 3
do
err=
val=$((d*1000+t*10+c))
tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 5s --configs "SRCU-P" --kconfig "CONFIG_FORCE_NEED_SRCU_NMI_SAFE=y" --bootargs "rcutorture.test_srcu_lockdep=$val rcutorture.reader_flavor=0x4" --trust-make --datestamp "$ds/$val" > "$T/kvm.sh.out" 2>&1
ret=$?
mv "$T/kvm.sh.out" "$RCUTORTURE/res/$ds/$val"
if ! grep -q '^CONFIG_PROVE_LOCKING=y' .config
then
echo "rcu_torture_init_srcu_lockdep:Error: CONFIG_PROVE_LOCKING disabled in rcutorture SRCU-P scenario"
err=1
fi
if test "$d" -ne 0 && test "$ret" -eq 0
then
err=1
echo -n Unexpected success for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
fi
if test "$d" -eq 0 && test "$ret" -ne 0
then
err=1
echo -n Unexpected failure for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
fi
if test -n "$err"
then
grep "rcu_torture_init_srcu_lockdep: test_srcu_lockdep = " "$RCUTORTURE/res/$ds/$val/SRCU-P/console.log" | sed -e 's/^.*rcu_torture_init_srcu_lockdep://' >> "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
cat "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
nerrs=$((nerrs+1))
fi
done
done
done
# Verify that synchronize_srcu_atomic() does not trigger lockdep
# warnings when called inside rcu_read_lock().
for c in 1 2 3
do
err=
val=$((6*10+c))
tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 5s \
--configs "SRCU-P" \
--kconfig "CONFIG_FORCE_NEED_SRCU_NMI_SAFE=y" \
--bootargs "rcutorture.test_srcu_lockdep=$val" \
--trust-make --datestamp "$ds/$val" > "$T/kvm.sh.out" 2>&1
ret=$?
mv "$T/kvm.sh.out" "$RCUTORTURE/res/$ds/$val"
if ! grep -q '^CONFIG_PROVE_LOCKING=y' .config
then
echo "rcu_torture_init_srcu_lockdep:Error: CONFIG_PROVE_LOCKING" \
"disabled in rcutorture SRCU-P scenario"
err=1
fi
if test "$ret" -ne 0
then
err=1
echo -n Unexpected failure for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
elif grep -qE "WARNING: possible (recursive locking|circular locking dependency)" \
"$RCUTORTURE/res/$ds/$val/SRCU-P/console.log"
then
err=1
echo -n Unexpected lockdep warning for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
fi
if test -n "$err"
then
grep "rcu_torture_init_srcu_lockdep: test_srcu_lockdep = " "$RCUTORTURE/res/$ds/$val/SRCU-P/console.log" | sed -e 's/^.*rcu_torture_init_srcu_lockdep://' >> "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
cat "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
nerrs=$((nerrs+1))
fi
done
# Verify that synchronize_srcu_atomic() detects IRQ context mismatch
# when SRCU reader previously ran with IRQs enabled.
for c in 1 2 3
do
err=
val=$((1000+7*10+c))
tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 5s \
--configs "SRCU-P" \
--kconfig "CONFIG_FORCE_NEED_SRCU_NMI_SAFE=y" \
--bootargs "rcutorture.test_srcu_lockdep=$val" \
--trust-make --datestamp "$ds/$val" > "$T/kvm.sh.out" 2>&1
ret=$?
mv "$T/kvm.sh.out" "$RCUTORTURE/res/$ds/$val"
if ! grep -q '^CONFIG_PROVE_LOCKING=y' .config
then
echo "rcu_torture_init_srcu_lockdep:Error: CONFIG_PROVE_LOCKING" \
"disabled in rcutorture SRCU-P scenario"
err=1
fi
if test "$ret" -eq 0
then
err=1
echo -n Missing lockdep warning for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
elif ! grep -q "inconsistent {HARDIRQ-ON-R}" "$RCUTORTURE/res/$ds/$val/SRCU-P/console.log"
then
err=1
echo -n Missing lockdep warning for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
fi
if test -n "$err"
then
grep "rcu_torture_init_srcu_lockdep: test_srcu_lockdep = " "$RCUTORTURE/res/$ds/$val/SRCU-P/console.log" | sed -e 's/^.*rcu_torture_init_srcu_lockdep://' >> "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
cat "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
nerrs=$((nerrs+1))
fi
done
# Test lockdep-enabled testing of mixed SRCU readers.
for val in 0x1 0xf
do
err=
tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 5s --configs "SRCU-P" --kconfig "CONFIG_FORCE_NEED_SRCU_NMI_SAFE=y" --bootargs "rcutorture.reader_flavor=$val" --trust-make --datestamp "$ds/$val" > "$T/kvm.sh.out" 2>&1
ret=$?
mv "$T/kvm.sh.out" "$RCUTORTURE/res/$ds/$val"
if ! grep -q '^CONFIG_PROVE_LOCKING=y' .config
then
echo "rcu_torture_init_srcu_lockdep:Error: CONFIG_PROVE_LOCKING disabled in rcutorture SRCU-P scenario"
err=1
fi
if test "$val" = 0xf && test "$ret" -eq 0
then
err=1
echo -n Unexpected success for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
fi
if test "$val" = 0x1 && test "$ret" -ne 0
then
err=1
echo -n Unexpected failure for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
fi
if test -n "$err"
then
grep "rcu_torture_init_srcu_lockdep: test_srcu_lockdep = " "$RCUTORTURE/res/$ds/$val/SRCU-P/console.log" | sed -e 's/^.*rcu_torture_init_srcu_lockdep://' >> "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
cat "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
nerrs=$((nerrs+1))
fi
done
# Set up exit code.
if test "$nerrs" -ne 0
then
exit 1
fi
exit 0
|
