X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=tests%2Fust-basic-tracing%2Fust-basic-tracing.c;h=7bfeb5bc540f7037a15a8a61976f0a2ebbfcc2ef;hb=172d6b687981b2606a5ad9caffba5686be96ff28;hp=18fb08789f637b58ac06b6b04acf84bf9cc2455e;hpb=9a37727f9dc181b93fbfcb273f59340a66fc056e;p=lttng-ust.git

diff --git a/tests/ust-basic-tracing/ust-basic-tracing.c b/tests/ust-basic-tracing/ust-basic-tracing.c
index 18fb0878..7bfeb5bc 100644
--- a/tests/ust-basic-tracing/ust-basic-tracing.c
+++ b/tests/ust-basic-tracing/ust-basic-tracing.c
@@ -642,11 +642,15 @@ error:
 
 int update_futex(int fd, int active)
 {
-	size_t mmap_size = sysconf(_SC_PAGE_SIZE);
+	long page_size;
 	char *wait_shm_mmap;
 	int ret;
 
-	wait_shm_mmap = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
+	page_size = sysconf(_SC_PAGE_SIZE);
+	if (page_size < 0) {
+		goto error;
+	}
+	wait_shm_mmap = mmap(NULL, page_size, PROT_READ | PROT_WRITE,
 		  MAP_SHARED, fd, 0);
 	if (wait_shm_mmap == MAP_FAILED) {
 		perror("mmap");
@@ -660,7 +664,7 @@ int update_futex(int fd, int active)
 	} else {
 		uatomic_set((int32_t *) wait_shm_mmap, 0);
 	}
-	ret = munmap(wait_shm_mmap, mmap_size);
+	ret = munmap(wait_shm_mmap, page_size);
 	if (ret) {
 		perror("Error unmapping wait shm");
 		goto error;