1 files changed, 17 insertions, 2 deletions

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 18d446e1a82b..d39601381adf 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -923,6 +923,8 @@ static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void)
 
         data = kzalloc(sizeof(*data), GFP_KERNEL);
         if (data) {
+                data->timeo             = NFS_UNSPEC_TIMEO;
+                data->retrans           = NFS_UNSPEC_RETRANS;
                 data->acregmin          = NFS_DEF_ACREGMIN;
                 data->acregmax          = NFS_DEF_ACREGMAX;
                 data->acdirmin          = NFS_DEF_ACDIRMIN;
@@ -1189,6 +1191,19 @@ static int nfs_get_option_ul(substring_t args[], unsigned long *option)
         return rc;
 }
 
+static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option,
+                unsigned long l_bound, unsigned long u_bound)
+{
+        int ret;
+
+        ret = nfs_get_option_ul(args, option);
+        if (ret != 0)
+                return ret;
+        if (*option < l_bound || *option > u_bound)
+                return -ERANGE;
+        return 0;
+}
+
 /*
  * Error-check and convert a string of mount options from user space into
  * a data structure.  The whole mount string is processed; bad options are
@@ -1352,12 +1367,12 @@ static int nfs_parse_mount_options(char *raw,
                         mnt->bsize = option;
                         break;
                 case Opt_timeo:
-                        if (nfs_get_option_ul(args, &option) || option == 0)
+                        if (nfs_get_option_ul_bound(args, &option, 1, INT_MAX))
                                 goto out_invalid_value;
                         mnt->timeo = option;
                         break;
                 case Opt_retrans:
-                        if (nfs_get_option_ul(args, &option) || option == 0)
+                        if (nfs_get_option_ul_bound(args, &option, 0, INT_MAX))
                                 goto out_invalid_value;
                         mnt->retrans = option;
                         break;