'cmdline' is a NUL terminated string, when its length < 4, memcmp()
will cause memory access out of boundary.
So need use strncmp() instead of memcmp().
Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx>
---
arch/frv/kernel/setup.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/frv/kernel/setup.c b/arch/frv/kernel/setup.c
index a513647..622d5ee 100644
--- a/arch/frv/kernel/setup.c
+++ b/arch/frv/kernel/setup.c
@@ -735,7 +735,7 @@ static void __init parse_cmdline_early(char *cmdline)
/* "mem=XXX[kKmM]" sets SDRAM size to <mem>, overriding the value we worked
* out from the SDRAM controller mask register
*/
- if (!memcmp(cmdline, "mem=", 4)) {
+ if (!strncmp(cmdline, "mem=", 4)) {
unsigned long long mem_size;
mem_size = memparse(cmdline + 4, &cmdline);
--
1.7.7.6
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