For example: WARNING: ThreadSanitizer: data race (pid=23406) Atomic read of size 4 at 0x7b100003e3c8 by thread T7: #0 __tsan_atomic32_load <null> (qemu-system-aarch64+0x39a36c) #1 qht_do_lookup util/qht.c:495:17 (qemu-system-aarch64+0xd82f7a) #2 qht_lookup_custom util/qht.c:539:11 (qemu-system-aarch64+0xd82f7a) Previous write of size 8 at 0x7b100003e3c8 by thread T6 (mutexes: write M166769147697783108, write M995435858420506688): #0 posix_memalign <null> (qemu-system-aarch64+0x350dd1) #1 qemu_try_memalign util/oslib-posix.c:189:11 (qemu-system-aarch64+0xd59317) #2 qemu_memalign util/oslib-posix.c:205:27 (qemu-system-aarch64+0xd5943e) #3 qht_insert__locked util/qht.c:583:9 (qemu-system-aarch64+0xd837c5)
Signed-off-by: Robert Foley <robert.fo...@linaro.org> --- util/qht.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/util/qht.c b/util/qht.c index 67e5d5b916..739a53ced0 100644 --- a/util/qht.c +++ b/util/qht.c @@ -69,6 +69,7 @@ #include "qemu/qht.h" #include "qemu/atomic.h" #include "qemu/rcu.h" +#include "qemu/tsan.h" //#define QHT_DEBUG @@ -580,10 +581,12 @@ static void *qht_insert__locked(const struct qht *ht, struct qht_map *map, b = b->next; } while (b); + TSAN_ANNOTATE_IGNORE_WRITES_BEGIN(); b = qemu_memalign(QHT_BUCKET_ALIGN, sizeof(*b)); memset(b, 0, sizeof(*b)); new = b; i = 0; + TSAN_ANNOTATE_IGNORE_WRITES_END(); atomic_inc(&map->n_added_buckets); if (unlikely(qht_map_needs_resize(map)) && needs_resize) { *needs_resize = true; -- 2.17.1