diff options
Diffstat (limited to 'mm/util.c')
| -rw-r--r-- | mm/util.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/mm/util.c b/mm/util.c index 4f1275023eb7..858a9a2f57e7 100644 --- a/mm/util.c +++ b/mm/util.c @@ -62,8 +62,15 @@ char *kstrdup(const char *s, gfp_t gfp) len = strlen(s) + 1; buf = kmalloc_track_caller(len, gfp); - if (buf) + if (buf) { memcpy(buf, s, len); + /* + * During memcpy(), the string might be updated to a new value, + * which could be longer than the string when strlen() is + * called. Therefore, we need to add a NUL terminator. + */ + buf[len - 1] = '\0'; + } return buf; } EXPORT_SYMBOL(kstrdup); |