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-rw-r--r--kernel/params.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/kernel/params.c b/kernel/params.c
index 16f269e9ddc9..2a4c51487e72 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -592,19 +592,16 @@ static void __init param_sysfs_builtin(void)
592 592
593 for (i=0; i < __stop___param - __start___param; i++) { 593 for (i=0; i < __stop___param - __start___param; i++) {
594 char *dot; 594 char *dot;
595 size_t kplen; 595 size_t max_name_len;
596 596
597 kp = &__start___param[i]; 597 kp = &__start___param[i];
598 kplen = strlen(kp->name); 598 max_name_len =
599 min_t(size_t, MAX_KBUILD_MODNAME, strlen(kp->name));
599 600
600 /* We do not handle args without periods. */ 601 dot = memchr(kp->name, '.', max_name_len);
601 if (kplen > MAX_KBUILD_MODNAME) {
602 DEBUGP("kernel parameter name is too long: %s\n", kp->name);
603 continue;
604 }
605 dot = memchr(kp->name, '.', kplen);
606 if (!dot) { 602 if (!dot) {
607 DEBUGP("couldn't find period in %s\n", kp->name); 603 DEBUGP("couldn't find period in first %d characters "
604 "of %s\n", MAX_KBUILD_MODNAME, kp->name);
608 continue; 605 continue;
609 } 606 }
610 name_len = dot - kp->name; 607 name_len = dot - kp->name;