diff options
Diffstat (limited to 'lib/strnlen_user.c')
| -rw-r--r-- | lib/strnlen_user.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/strnlen_user.c b/lib/strnlen_user.c index feeb935a2299..6e489f9e90f1 100644 --- a/lib/strnlen_user.c +++ b/lib/strnlen_user.c @@ -96,6 +96,15 @@ long strnlen_user(const char __user *str, long count) if (unlikely(count <= 0)) return 0; + if (can_do_masked_user_access()) { + long retval; + + str = masked_user_access_begin(str); + retval = do_strnlen_user(str, count, count); + user_read_access_end(); + return retval; + } + max_addr = TASK_SIZE_MAX; src_addr = (unsigned long)untagged_addr(str); if (likely(src_addr < max_addr)) { |