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-rw-r--r--fs/compat.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/compat.c b/fs/compat.c
index 06dad665b88f..7aef5412f49c 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -871,7 +871,7 @@ asmlinkage long compat_sys_mount(char __user * dev_name, char __user * dir_name,
retval = -EINVAL;
- if (type_page) {
+ if (type_page && data_page) {
if (!strcmp((char *)type_page, SMBFS_NAME)) {
do_smb_super_data_conv((void *)data_page);
} else if (!strcmp((char *)type_page, NCPFS_NAME)) {
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