fsl_qbman: usdpaa: clear ioctl_dma_map string buffers

Clear all string buffers memory locations in ioctl_dma_map before using strncpy to copy the string name Signed-off-by: Florinel Iordache <florinel.iordache@nxp.com>
Freescale · Apr 26, 2021 · 1db839b · 1db839b
1 parent ebafc8f
commit 1db839b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/drivers/staging/fsl_qbman/fsl_usdpaa.c b/drivers/staging/fsl_qbman/fsl_usdpaa.c
@@ -1157,7 +1157,8 @@ static long ioctl_dma_map(struct file *fp, struct ctx *ctx,
 	if (i->did_create) {
 		size_t name_len = 0;
 		start_frag->flags = i->flags;
-		strncpy(start_frag->name, i->name, USDPAA_DMA_NAME_MAX);
+		memset(start_frag->name, '\0', USDPAA_DMA_NAME_MAX);
+		strncpy(start_frag->name, i->name, USDPAA_DMA_NAME_MAX - 1);
 		name_len = strnlen(start_frag->name, USDPAA_DMA_NAME_MAX);
 		if (name_len >= USDPAA_DMA_NAME_MAX) {
 			ret = -EFAULT;