[igt-dev] [PATCH i-g-t 3/5] lib/debugfs: Ensure null-termination in igt_hpd_storm_detected

[Petri Latvala]

Read sizeof - 1 to buf so it stays null-terminated.

Signed-off-by: Petri Latvala <petri.latvala at intel.com>
---
 lib/igt_debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/igt_debugfs.c b/lib/igt_debugfs.c
index 640c78e9..b0e5cfa5 100644
--- a/lib/igt_debugfs.c
+++ b/lib/igt_debugfs.c
@@ -628,7 +628,7 @@ bool igt_hpd_storm_detected(int drm_fd)
 	if (fd < 0)
 		return false;
 
-	igt_assert_lt(0, read(fd, buf, sizeof(buf)));
+	igt_assert_lt(0, read(fd, buf, sizeof(buf) - 1));
 	igt_assert(start_loc = strstr(buf, "Detected: "));
 	igt_assert_eq(sscanf(start_loc, "Detected: %s\n", detected_str), 1);
 
-- 
2.19.1