1 files changed, 3 insertions, 0 deletions

diff --git a/mm/swapfile.c b/mm/swapfile.c
index dae42f380d6e..fafc26d1b1dc 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -2022,6 +2022,9 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
         struct page *page = NULL;
         struct inode *inode = NULL;
 
+        if (swap_flags & ~SWAP_FLAGS_VALID)
+                return -EINVAL;
+
         if (!capable(CAP_SYS_ADMIN))
                 return -EPERM;