linux-kernel - [PATCH] dma-buf: heaps: bugfix for selftest failure

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Message-Id: <1583300076-28392-1-git-send-email-leon.he@unisoc.com>
Date:   Wed,  4 Mar 2020 13:34:36 +0800
From:   Leon He <hexiaolong2008@...il.com>
To:     shuah@...nel.org, sumit.semwal@...aro.org
Cc:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linaro-mm-sig@...ts.linaro.org, Leon He <leon.he@...soc.com>
Subject: [PATCH] dma-buf: heaps: bugfix for selftest failure

If the 'name' array in check_vgem() was not initialized to null, the
value of name[4] may be random. Which will cause strcmp(name, "vgem")
failed.

Signed-off-by: Leon He <leon.he@...soc.com>
---
 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
index cd5e1f6..21f3d19 100644
--- a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
+++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
@@ -22,7 +22,7 @@
 static int check_vgem(int fd)
 {
 	drm_version_t version = { 0 };
-	char name[5];
+	char name[5] = { 0 };
 	int ret;
 
 	version.name_len = 4;
-- 
2.7.4