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authorLinus Torvalds <torvalds@linux-foundation.org>2018-12-26 14:25:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-12-26 14:25:52 -0800
commit1eefdec18eded41833401cfd64749643ff72e7da (patch)
treecf9d35939e239b7d1ed3194bec7f4d51409c2d50
parent684019dd1f0092b4ffce4958c84aff0891deac83 (diff)
parent80eb865768703c0f85a0603762742ae1dedf21f0 (diff)
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar: "The main change in this cycle are initial preparatory bits of dynamic lockdep keys support from Bart Van Assche. There are also misc changes, a comment cleanup and a data structure cleanup" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Clean up comment in nohz_idle_balance() locking/lockdep: Stop using RCU primitives to access 'all_lock_classes' locking/lockdep: Make concurrent lockdep_reset_lock() calls safe locking/lockdep: Remove a superfluous INIT_LIST_HEAD() statement locking/lockdep: Introduce lock_class_cache_is_registered() locking/lockdep: Inline __lockdep_init_map() locking/lockdep: Declare local symbols static tools/lib/lockdep/tests: Test the lockdep_reset_lock() implementation tools/lib/lockdep: Add dummy print_irqtrace_events() implementation tools/lib/lockdep: Rename "trywlock" into "trywrlock" tools/lib/lockdep/tests: Run lockdep tests a second time under Valgrind tools/lib/lockdep/tests: Improve testing accuracy tools/lib/lockdep/tests: Fix shellcheck warnings tools/lib/lockdep/tests: Display compiler warning and error messages locking/lockdep: Remove ::version from lock_class structure
-rw-r--r--include/linux/lockdep.h2
-rw-r--r--kernel/locking/lockdep.c76
-rw-r--r--kernel/sched/fair.c4
-rw-r--r--tools/lib/lockdep/include/liblockdep/common.h1
-rw-r--r--tools/lib/lockdep/include/liblockdep/mutex.h1
-rw-r--r--tools/lib/lockdep/include/liblockdep/rwlock.h6
-rw-r--r--tools/lib/lockdep/lockdep.c5
-rwxr-xr-xtools/lib/lockdep/run_tests.sh39
-rw-r--r--tools/lib/lockdep/tests/AA.sh2
-rw-r--r--tools/lib/lockdep/tests/ABA.sh2
-rw-r--r--tools/lib/lockdep/tests/ABBA.c3
-rw-r--r--tools/lib/lockdep/tests/ABBA.sh2
-rw-r--r--tools/lib/lockdep/tests/ABBA_2threads.sh2
-rw-r--r--tools/lib/lockdep/tests/ABBCCA.c4
-rw-r--r--tools/lib/lockdep/tests/ABBCCA.sh2
-rw-r--r--tools/lib/lockdep/tests/ABBCCDDA.c5
-rw-r--r--tools/lib/lockdep/tests/ABBCCDDA.sh2
-rw-r--r--tools/lib/lockdep/tests/ABCABC.c4
-rw-r--r--tools/lib/lockdep/tests/ABCABC.sh2
-rw-r--r--tools/lib/lockdep/tests/ABCDBCDA.c5
-rw-r--r--tools/lib/lockdep/tests/ABCDBCDA.sh2
-rw-r--r--tools/lib/lockdep/tests/ABCDBDDA.c5
-rw-r--r--tools/lib/lockdep/tests/ABCDBDDA.sh2
-rw-r--r--tools/lib/lockdep/tests/WW.sh2
-rw-r--r--tools/lib/lockdep/tests/unlock_balance.c2
-rw-r--r--tools/lib/lockdep/tests/unlock_balance.sh2
26 files changed, 131 insertions, 53 deletions
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 1fd82ff99c65..c5335df2372f 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -97,8 +97,6 @@ struct lock_class {
* Generation counter, when doing certain classes of graph walking,
* to ensure that we check one node only once:
*/
- unsigned int version;
-
int name_version;
const char *name;
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index ef27f98714c0..95932333a48b 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -138,6 +138,9 @@ static struct lock_list list_entries[MAX_LOCKDEP_ENTRIES];
* get freed - this significantly simplifies the debugging code.
*/
unsigned long nr_lock_classes;
+#ifndef CONFIG_DEBUG_LOCKDEP
+static
+#endif
struct lock_class lock_classes[MAX_LOCKDEP_KEYS];
static inline struct lock_class *hlock_class(struct held_lock *hlock)
@@ -626,7 +629,8 @@ static int static_obj(void *obj)
/*
* To make lock name printouts unique, we calculate a unique
- * class->name_version generation counter:
+ * class->name_version generation counter. The caller must hold the graph
+ * lock.
*/
static int count_matching_names(struct lock_class *new_class)
{
@@ -636,7 +640,7 @@ static int count_matching_names(struct lock_class *new_class)
if (!new_class->name)
return 0;
- list_for_each_entry_rcu(class, &all_lock_classes, lock_entry) {
+ list_for_each_entry(class, &all_lock_classes, lock_entry) {
if (new_class->key - new_class->subclass == class->key)
return class->name_version;
if (class->name && !strcmp(class->name, new_class->name))
@@ -789,7 +793,6 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force)
class->key = key;
class->name = lock->name;
class->subclass = subclass;
- INIT_LIST_HEAD(&class->lock_entry);
INIT_LIST_HEAD(&class->locks_before);
INIT_LIST_HEAD(&class->locks_after);
class->name_version = count_matching_names(class);
@@ -801,7 +804,7 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force)
/*
* Add it to the global list of classes:
*/
- list_add_tail_rcu(&class->lock_entry, &all_lock_classes);
+ list_add_tail(&class->lock_entry, &all_lock_classes);
if (verbose(class)) {
graph_unlock();
@@ -3088,7 +3091,7 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
/*
* Initialize a lock instance's lock-class mapping info:
*/
-static void __lockdep_init_map(struct lockdep_map *lock, const char *name,
+void lockdep_init_map(struct lockdep_map *lock, const char *name,
struct lock_class_key *key, int subclass)
{
int i;
@@ -3144,12 +3147,6 @@ static void __lockdep_init_map(struct lockdep_map *lock, const char *name,
raw_local_irq_restore(flags);
}
}
-
-void lockdep_init_map(struct lockdep_map *lock, const char *name,
- struct lock_class_key *key, int subclass)
-{
- __lockdep_init_map(lock, name, key, subclass);
-}
EXPORT_SYMBOL_GPL(lockdep_init_map);
struct lock_class_key __lockdep_no_validate__;
@@ -4126,6 +4123,9 @@ void lockdep_reset(void)
raw_local_irq_restore(flags);
}
+/*
+ * Remove all references to a lock class. The caller must hold the graph lock.
+ */
static void zap_class(struct lock_class *class)
{
int i;
@@ -4142,7 +4142,7 @@ static void zap_class(struct lock_class *class)
* Unhash the class and remove it from the all_lock_classes list:
*/
hlist_del_rcu(&class->hash_entry);
- list_del_rcu(&class->lock_entry);
+ list_del(&class->lock_entry);
RCU_INIT_POINTER(class->key, NULL);
RCU_INIT_POINTER(class->name, NULL);
@@ -4204,15 +4204,36 @@ void lockdep_free_key_range(void *start, unsigned long size)
*/
}
-void lockdep_reset_lock(struct lockdep_map *lock)
+/*
+ * Check whether any element of the @lock->class_cache[] array refers to a
+ * registered lock class. The caller must hold either the graph lock or the
+ * RCU read lock.
+ */
+static bool lock_class_cache_is_registered(struct lockdep_map *lock)
{
struct lock_class *class;
struct hlist_head *head;
- unsigned long flags;
int i, j;
- int locked;
+
+ for (i = 0; i < CLASSHASH_SIZE; i++) {
+ head = classhash_table + i;
+ hlist_for_each_entry_rcu(class, head, hash_entry) {
+ for (j = 0; j < NR_LOCKDEP_CACHING_CLASSES; j++)
+ if (lock->class_cache[j] == class)
+ return true;
+ }
+ }
+ return false;
+}
+
+void lockdep_reset_lock(struct lockdep_map *lock)
+{
+ struct lock_class *class;
+ unsigned long flags;
+ int j, locked;
raw_local_irq_save(flags);
+ locked = graph_lock();
/*
* Remove all classes this lock might have:
@@ -4229,25 +4250,14 @@ void lockdep_reset_lock(struct lockdep_map *lock)
* Debug check: in the end all mapped classes should
* be gone.
*/
- locked = graph_lock();
- for (i = 0; i < CLASSHASH_SIZE; i++) {
- head = classhash_table + i;
- hlist_for_each_entry_rcu(class, head, hash_entry) {
- int match = 0;
-
- for (j = 0; j < NR_LOCKDEP_CACHING_CLASSES; j++)
- match |= class == lock->class_cache[j];
-
- if (unlikely(match)) {
- if (debug_locks_off_graph_unlock()) {
- /*
- * We all just reset everything, how did it match?
- */
- WARN_ON(1);
- }
- goto out_restore;
- }
+ if (unlikely(lock_class_cache_is_registered(lock))) {
+ if (debug_locks_off_graph_unlock()) {
+ /*
+ * We all just reset everything, how did it match?
+ */
+ WARN_ON(1);
}
+ goto out_restore;
}
if (locked)
graph_unlock();
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index ac855b2f4774..db514993565b 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -9533,9 +9533,7 @@ static bool nohz_idle_balance(struct rq *this_rq, enum cpu_idle_type idle)
return false;
}
- /*
- * barrier, pairs with nohz_balance_enter_idle(), ensures ...
- */
+ /* could be _relaxed() */
flags = atomic_fetch_andnot(NOHZ_KICK_MASK, nohz_flags(this_cpu));
if (!(flags & NOHZ_KICK_MASK))
return false;
diff --git a/tools/lib/lockdep/include/liblockdep/common.h b/tools/lib/lockdep/include/liblockdep/common.h
index 8862da80995a..d640a9761f09 100644
--- a/tools/lib/lockdep/include/liblockdep/common.h
+++ b/tools/lib/lockdep/include/liblockdep/common.h
@@ -44,6 +44,7 @@ void lock_acquire(struct lockdep_map *lock, unsigned int subclass,
struct lockdep_map *nest_lock, unsigned long ip);
void lock_release(struct lockdep_map *lock, int nested,
unsigned long ip);
+void lockdep_reset_lock(struct lockdep_map *lock);
extern void debug_check_no_locks_freed(const void *from, unsigned long len);
#define STATIC_LOCKDEP_MAP_INIT(_name, _key) \
diff --git a/tools/lib/lockdep/include/liblockdep/mutex.h b/tools/lib/lockdep/include/liblockdep/mutex.h
index a80ac39f966e..2073d4e1f2f0 100644
--- a/tools/lib/lockdep/include/liblockdep/mutex.h
+++ b/tools/lib/lockdep/include/liblockdep/mutex.h
@@ -54,6 +54,7 @@ static inline int liblockdep_pthread_mutex_trylock(liblockdep_pthread_mutex_t *l
static inline int liblockdep_pthread_mutex_destroy(liblockdep_pthread_mutex_t *lock)
{
+ lockdep_reset_lock(&lock->dep_map);
return pthread_mutex_destroy(&lock->mutex);
}
diff --git a/tools/lib/lockdep/include/liblockdep/rwlock.h b/tools/lib/lockdep/include/liblockdep/rwlock.h
index a96c3bf0fef1..365762e3a1ea 100644
--- a/tools/lib/lockdep/include/liblockdep/rwlock.h
+++ b/tools/lib/lockdep/include/liblockdep/rwlock.h
@@ -60,10 +60,10 @@ static inline int liblockdep_pthread_rwlock_tryrdlock(liblockdep_pthread_rwlock_
return pthread_rwlock_tryrdlock(&lock->rwlock) == 0 ? 1 : 0;
}
-static inline int liblockdep_pthread_rwlock_trywlock(liblockdep_pthread_rwlock_t *lock)
+static inline int liblockdep_pthread_rwlock_trywrlock(liblockdep_pthread_rwlock_t *lock)
{
lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_);
- return pthread_rwlock_trywlock(&lock->rwlock) == 0 ? 1 : 0;
+ return pthread_rwlock_trywrlock(&lock->rwlock) == 0 ? 1 : 0;
}
static inline int liblockdep_rwlock_destroy(liblockdep_pthread_rwlock_t *lock)
@@ -79,7 +79,7 @@ static inline int liblockdep_rwlock_destroy(liblockdep_pthread_rwlock_t *lock)
#define pthread_rwlock_unlock liblockdep_pthread_rwlock_unlock
#define pthread_rwlock_wrlock liblockdep_pthread_rwlock_wrlock
#define pthread_rwlock_tryrdlock liblockdep_pthread_rwlock_tryrdlock
-#define pthread_rwlock_trywlock liblockdep_pthread_rwlock_trywlock
+#define pthread_rwlock_trywrlock liblockdep_pthread_rwlock_trywrlock
#define pthread_rwlock_destroy liblockdep_rwlock_destroy
#endif
diff --git a/tools/lib/lockdep/lockdep.c b/tools/lib/lockdep/lockdep.c
index 6002fcf2f9bc..348a9d0fb766 100644
--- a/tools/lib/lockdep/lockdep.c
+++ b/tools/lib/lockdep/lockdep.c
@@ -15,6 +15,11 @@ u32 prandom_u32(void)
abort();
}
+void print_irqtrace_events(struct task_struct *curr)
+{
+ abort();
+}
+
static struct new_utsname *init_utsname(void)
{
static struct new_utsname n = (struct new_utsname) {
diff --git a/tools/lib/lockdep/run_tests.sh b/tools/lib/lockdep/run_tests.sh
index 2e570a188f16..c8fbd0306960 100755
--- a/tools/lib/lockdep/run_tests.sh
+++ b/tools/lib/lockdep/run_tests.sh
@@ -1,32 +1,47 @@
#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
-make &> /dev/null
+if ! make >/dev/null; then
+ echo "Building liblockdep failed."
+ echo "FAILED!"
+ exit 1
+fi
-for i in `ls tests/*.c`; do
+find tests -name '*.c' | sort | while read -r i; do
testname=$(basename "$i" .c)
- gcc -o tests/$testname -pthread $i liblockdep.a -Iinclude -D__USE_LIBLOCKDEP &> /dev/null
echo -ne "$testname... "
- if [ $(timeout 1 ./tests/$testname 2>&1 | wc -l) -gt 0 ]; then
+ if gcc -o "tests/$testname" -pthread "$i" liblockdep.a -Iinclude -D__USE_LIBLOCKDEP &&
+ timeout 1 "tests/$testname" 2>&1 | "tests/${testname}.sh"; then
echo "PASSED!"
else
echo "FAILED!"
fi
- if [ -f "tests/$testname" ]; then
- rm tests/$testname
- fi
+ rm -f "tests/$testname"
done
-for i in `ls tests/*.c`; do
+find tests -name '*.c' | sort | while read -r i; do
testname=$(basename "$i" .c)
- gcc -o tests/$testname -pthread -Iinclude $i &> /dev/null
echo -ne "(PRELOAD) $testname... "
- if [ $(timeout 1 ./lockdep ./tests/$testname 2>&1 | wc -l) -gt 0 ]; then
+ if gcc -o "tests/$testname" -pthread -Iinclude "$i" &&
+ timeout 1 ./lockdep "tests/$testname" 2>&1 |
+ "tests/${testname}.sh"; then
echo "PASSED!"
else
echo "FAILED!"
fi
- if [ -f "tests/$testname" ]; then
- rm tests/$testname
+ rm -f "tests/$testname"
+done
+
+find tests -name '*.c' | sort | while read -r i; do
+ testname=$(basename "$i" .c)
+ echo -ne "(PRELOAD + Valgrind) $testname... "
+ if gcc -o "tests/$testname" -pthread -Iinclude "$i" &&
+ { timeout 10 valgrind --read-var-info=yes ./lockdep "./tests/$testname" >& "tests/${testname}.vg.out"; true; } &&
+ "tests/${testname}.sh" < "tests/${testname}.vg.out" &&
+ ! grep -Eq '(^==[0-9]*== (Invalid |Uninitialised ))|Mismatched free|Source and destination overlap| UME ' "tests/${testname}.vg.out"; then
+ echo "PASSED!"
+ else
+ echo "FAILED!"
fi
+ rm -f "tests/$testname"
done
diff --git a/tools/lib/lockdep/tests/AA.sh b/tools/lib/lockdep/tests/AA.sh
new file mode 100644
index 000000000000..f39b32865074
--- /dev/null
+++ b/tools/lib/lockdep/tests/AA.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible recursive locking detected'
diff --git a/tools/lib/lockdep/tests/ABA.sh b/tools/lib/lockdep/tests/ABA.sh
new file mode 100644
index 000000000000..f39b32865074
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABA.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible recursive locking detected'
diff --git a/tools/lib/lockdep/tests/ABBA.c b/tools/lib/lockdep/tests/ABBA.c
index 1460afd33d71..623313f54720 100644
--- a/tools/lib/lockdep/tests/ABBA.c
+++ b/tools/lib/lockdep/tests/ABBA.c
@@ -11,4 +11,7 @@ void main(void)
LOCK_UNLOCK_2(a, b);
LOCK_UNLOCK_2(b, a);
+
+ pthread_mutex_destroy(&b);
+ pthread_mutex_destroy(&a);
}
diff --git a/tools/lib/lockdep/tests/ABBA.sh b/tools/lib/lockdep/tests/ABBA.sh
new file mode 100644
index 000000000000..fc31c607a5a8
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABBA.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible circular locking dependency detected'
diff --git a/tools/lib/lockdep/tests/ABBA_2threads.sh b/tools/lib/lockdep/tests/ABBA_2threads.sh
new file mode 100644
index 000000000000..fc31c607a5a8
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABBA_2threads.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible circular locking dependency detected'
diff --git a/tools/lib/lockdep/tests/ABBCCA.c b/tools/lib/lockdep/tests/ABBCCA.c
index a54c1b2af118..48446129d496 100644
--- a/tools/lib/lockdep/tests/ABBCCA.c
+++ b/tools/lib/lockdep/tests/ABBCCA.c
@@ -13,4 +13,8 @@ void main(void)
LOCK_UNLOCK_2(a, b);
LOCK_UNLOCK_2(b, c);
LOCK_UNLOCK_2(c, a);
+
+ pthread_mutex_destroy(&c);
+ pthread_mutex_destroy(&b);
+ pthread_mutex_destroy(&a);
}
diff --git a/tools/lib/lockdep/tests/ABBCCA.sh b/tools/lib/lockdep/tests/ABBCCA.sh
new file mode 100644
index 000000000000..fc31c607a5a8
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABBCCA.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible circular locking dependency detected'
diff --git a/tools/lib/lockdep/tests/ABBCCDDA.c b/tools/lib/lockdep/tests/ABBCCDDA.c
index aa5d194e8869..3570bf7b3804 100644
--- a/tools/lib/lockdep/tests/ABBCCDDA.c
+++ b/tools/lib/lockdep/tests/ABBCCDDA.c
@@ -15,4 +15,9 @@ void main(void)
LOCK_UNLOCK_2(b, c);
LOCK_UNLOCK_2(c, d);
LOCK_UNLOCK_2(d, a);
+
+ pthread_mutex_destroy(&d);
+ pthread_mutex_destroy(&c);
+ pthread_mutex_destroy(&b);
+ pthread_mutex_destroy(&a);
}
diff --git a/tools/lib/lockdep/tests/ABBCCDDA.sh b/tools/lib/lockdep/tests/ABBCCDDA.sh
new file mode 100644
index 000000000000..fc31c607a5a8
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABBCCDDA.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible circular locking dependency detected'
diff --git a/tools/lib/lockdep/tests/ABCABC.c b/tools/lib/lockdep/tests/ABCABC.c
index b54a08e60416..a1c4659894cd 100644
--- a/tools/lib/lockdep/tests/ABCABC.c
+++ b/tools/lib/lockdep/tests/ABCABC.c
@@ -13,4 +13,8 @@ void main(void)
LOCK_UNLOCK_2(a, b);
LOCK_UNLOCK_2(c, a);
LOCK_UNLOCK_2(b, c);
+
+ pthread_mutex_destroy(&c);
+ pthread_mutex_destroy(&b);
+ pthread_mutex_destroy(&a);
}
diff --git a/tools/lib/lockdep/tests/ABCABC.sh b/tools/lib/lockdep/tests/ABCABC.sh
new file mode 100644
index 000000000000..fc31c607a5a8
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABCABC.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible circular locking dependency detected'
diff --git a/tools/lib/lockdep/tests/ABCDBCDA.c b/tools/lib/lockdep/tests/ABCDBCDA.c
index a56742250d86..335af1c90ab5 100644
--- a/tools/lib/lockdep/tests/ABCDBCDA.c
+++ b/tools/lib/lockdep/tests/ABCDBCDA.c
@@ -15,4 +15,9 @@ void main(void)
LOCK_UNLOCK_2(c, d);
LOCK_UNLOCK_2(b, c);
LOCK_UNLOCK_2(d, a);
+
+ pthread_mutex_destroy(&d);
+ pthread_mutex_destroy(&c);
+ pthread_mutex_destroy(&b);
+ pthread_mutex_destroy(&a);
}
diff --git a/tools/lib/lockdep/tests/ABCDBCDA.sh b/tools/lib/lockdep/tests/ABCDBCDA.sh
new file mode 100644
index 000000000000..fc31c607a5a8
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABCDBCDA.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible circular locking dependency detected'
diff --git a/tools/lib/lockdep/tests/ABCDBDDA.c b/tools/lib/lockdep/tests/ABCDBDDA.c
index 238a3353f3c3..3c5972863049 100644
--- a/tools/lib/lockdep/tests/ABCDBDDA.c
+++ b/tools/lib/lockdep/tests/ABCDBDDA.c
@@ -15,4 +15,9 @@ void main(void)
LOCK_UNLOCK_2(c, d);
LOCK_UNLOCK_2(b, d);
LOCK_UNLOCK_2(d, a);
+
+ pthread_mutex_destroy(&d);
+ pthread_mutex_destroy(&c);
+ pthread_mutex_destroy(&b);
+ pthread_mutex_destroy(&a);
}
diff --git a/tools/lib/lockdep/tests/ABCDBDDA.sh b/tools/lib/lockdep/tests/ABCDBDDA.sh
new file mode 100644
index 000000000000..fc31c607a5a8
--- /dev/null
+++ b/tools/lib/lockdep/tests/ABCDBDDA.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible circular locking dependency detected'
diff --git a/tools/lib/lockdep/tests/WW.sh b/tools/lib/lockdep/tests/WW.sh
new file mode 100644
index 000000000000..f39b32865074
--- /dev/null
+++ b/tools/lib/lockdep/tests/WW.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: possible recursive locking detected'
diff --git a/tools/lib/lockdep/tests/unlock_balance.c b/tools/lib/lockdep/tests/unlock_balance.c
index 34cf32f689de..dba25064b50a 100644
--- a/tools/lib/lockdep/tests/unlock_balance.c
+++ b/tools/lib/lockdep/tests/unlock_balance.c
@@ -10,4 +10,6 @@ void main(void)
pthread_mutex_lock(&a);
pthread_mutex_unlock(&a);
pthread_mutex_unlock(&a);
+
+ pthread_mutex_destroy(&a);
}
diff --git a/tools/lib/lockdep/tests/unlock_balance.sh b/tools/lib/lockdep/tests/unlock_balance.sh
new file mode 100644
index 000000000000..c6e3952303fe
--- /dev/null
+++ b/tools/lib/lockdep/tests/unlock_balance.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+grep -q 'WARNING: bad unlock balance detected'