!149 fix：增强对LOS_ArchCopyToUser接口的安全防护

Merge pull request !149 from zhangdengyu/fix_kernelStack_1115

drivers/video/fb.c

@@ -398,7 +398,7 @@ static int fb_ioctl(struct file *filep, int cmd, unsigned long arg)
 
       case FBIOGET_VIDEOINFO:  /* Get color plane info */
         {
-          struct fb_videoinfo_s vinfo;
+          struct fb_videoinfo_s vinfo = { 0 };
 
           DEBUGASSERT(fb->vtable != NULL &&
                       fb->vtable->getvideoinfo != NULL);
@@ -416,7 +416,7 @@ static int fb_ioctl(struct file *filep, int cmd, unsigned long arg)
 
       case FBIOGET_PLANEINFO:  /* Get video plane info */
         {
-          struct fb_planeinfo_s pinfo;
+          struct fb_planeinfo_s pinfo = { 0 };
 
           DEBUGASSERT(fb->vtable != NULL &&
                       fb->vtable->getplaneinfo != NULL);
@@ -435,7 +435,7 @@ static int fb_ioctl(struct file *filep, int cmd, unsigned long arg)
 #ifdef CONFIG_FB_CMAP
       case FBIOGET_CMAP:       /* Get RGB color mapping */
         {
-          struct fb_cmap_s cmap;
+          struct fb_cmap_s cmap = { 0 };
 
           DEBUGASSERT(fb->vtable != NULL &&
                       fb->vtable->getcmap != NULL);
@@ -470,7 +470,7 @@ static int fb_ioctl(struct file *filep, int cmd, unsigned long arg)
 #ifdef CONFIG_FB_HWCURSOR
       case FBIOGET_CURSOR:     /* Get cursor attributes */
         {
-          struct fb_cursorattrib_s attrib;
+          struct fb_cursorattrib_s attrib = { 0 };
 
           DEBUGASSERT(fb->vtable != NULL &&
                       fb->vtable->getcursor != NULL);

fs/inode/fs_files.c

@@ -60,7 +60,7 @@
 #define ferr PRINTK
 
 #if CONFIG_NFILE_DESCRIPTORS > 0
-struct filelist tg_filelist;
+struct filelist tg_filelist = { 0 };
 #endif
 
 /****************************************************************************