[PATCH] fbdev: correct buffer size limit in fbmem_read_proc()

Address http://bugzilla.kernel.org/show_bug.cgi?id=7189

It should check `clen', not `len'.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: <jurij@wooyd.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: <stable@kernel.org>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 17961e3..93ffcdd 100644 (file)
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -554,7 +554,8 @@ static int fbmem_read_proc(char *buf, char **start, off_t offset,
        int clen;
 
        clen = 0;
-       for (fi = registered_fb; fi < &registered_fb[FB_MAX] && len < 4000; fi++)
+       for (fi = registered_fb; fi < &registered_fb[FB_MAX] && clen < 4000;
+            fi++)
                if (*fi)
                        clen += sprintf(buf + clen, "%d %s\n",
                                        (*fi)->node,