diff options
Diffstat (limited to 'tools/testing/selftests/ring-buffer/map_test.c')
| -rw-r--r-- | tools/testing/selftests/ring-buffer/map_test.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/tools/testing/selftests/ring-buffer/map_test.c b/tools/testing/selftests/ring-buffer/map_test.c index d10a847130fb..f24677737066 100644 --- a/tools/testing/selftests/ring-buffer/map_test.c +++ b/tools/testing/selftests/ring-buffer/map_test.c @@ -17,7 +17,7 @@ #include <sys/ioctl.h> #include "../user_events/user_events_selftests.h" /* share tracefs setup */ -#include "../kselftest_harness.h" +#include "kselftest_harness.h" #define TRACEFS_ROOT "/sys/kernel/tracing" @@ -233,12 +233,18 @@ TEST_F(map, data_mmap) ASSERT_NE(data, MAP_FAILED); munmap(data, data_len); - /* Overflow the available subbufs by 1 */ + /* Offset within ring-buffer bounds, mapping size overflow */ meta_len += desc->meta->subbuf_size * 2; data = mmap(NULL, data_len, PROT_READ, MAP_SHARED, desc->cpu_fd, meta_len); ASSERT_EQ(data, MAP_FAILED); + /* Offset outside ring-buffer bounds */ + data_len = desc->meta->subbuf_size * desc->meta->nr_subbufs; + data = mmap(NULL, data_len, PROT_READ, MAP_SHARED, + desc->cpu_fd, data_len + (desc->meta->subbuf_size * 2)); + ASSERT_EQ(data, MAP_FAILED); + /* Verify meta-page padding */ if (desc->meta->meta_page_size > getpagesize()) { data_len = desc->meta->meta_page_size; |