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authorSteve Sakoman <steve@sakoman.com>2012-06-07 10:19:18 -0700
committerScott Wood <scott@tyr.buserror.net>2012-06-08 14:57:24 -0500
commit8d75c8964baa76d097edb4aa4b0474600f2998ba (patch)
tree056e850371fcdb988da4d3e33e362c3bfc37de6b
parentfedab338f3459315cb69627fcf46032ec8df1753 (diff)
cmd_nand: fix crashing bug in nand read/write
Commit 418396e212b59bf907dbccad997ff50f7eb61b16 introduced a bug that causes nand read and nand write to crash in strcmp due to a null pointer. Root cause is that strchr(cmd, '.') returns a null pointer when the input string does not contain a '.' The strcmp function does not check for null pointers, resulting in a crash. Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Scott Wood <scott@tyr.buserror.net>
-rw-r--r--common/cmd_nand.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index fa442951d81..a91ccf4df37 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -617,7 +617,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
s = strchr(cmd, '.');
- if (!strcmp(s, ".raw")) {
+ if (s && !strcmp(s, ".raw")) {
raw = 1;
if (arg_off(argv[3], &dev, &off, &size))