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-rw-r--r--kernel/params.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/params.c b/kernel/params.c
index e61c46c97ce7..8e8ca8fac4ff 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -591,11 +591,17 @@ static void __init param_sysfs_builtin(void)
for (i=0; i < __stop___param - __start___param; i++) {
char *dot;
+ size_t kplen;
kp = &__start___param[i];
+ kplen = strlen(kp->name);
/* We do not handle args without periods. */
- dot = memchr(kp->name, '.', MAX_KBUILD_MODNAME);
+ if (kplen > MAX_KBUILD_MODNAME) {
+ DEBUGP("kernel parameter name is too long: %s\n", kp->name);
+ continue;
+ }
+ dot = memchr(kp->name, '.', kplen);
if (!dot) {
DEBUGP("couldn't find period in %s\n", kp->name);
continue;