diff options
Diffstat (limited to 'lib/strnlen_user.c')
| -rw-r--r-- | lib/strnlen_user.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/strnlen_user.c b/lib/strnlen_user.c index 184f80f7bacf..f5fa5b266ea2 100644 --- a/lib/strnlen_user.c +++ b/lib/strnlen_user.c @@ -114,10 +114,11 @@ long strnlen_user(const char __user *str, long count) unsigned long max = max_addr - src_addr; long retval; - user_access_begin(); - retval = do_strnlen_user(str, count, max); - user_access_end(); - return retval; + if (user_access_begin(VERIFY_READ, str, max)) { + retval = do_strnlen_user(str, count, max); + user_access_end(); + return retval; + } } return 0; } |