These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / fs / sysfs / mount.c

diff --git a/kernel/fs/sysfs/mount.c b/kernel/fs/sysfs/mount.c
index 1c6ac6f..f3db820 100644 (file)
--- a/kernel/fs/sysfs/mount.c
+++ b/kernel/fs/sysfs/mount.c
@@ -40,6 +40,10 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type,
                                SYSFS_MAGIC, &new_sb, ns);
        if (IS_ERR(root) || !new_sb)
                kobj_ns_drop(KOBJ_NS_TYPE_NET, ns);
+       else if (new_sb)
+               /* Userspace would break if executables appear on sysfs */
+               root->d_sb->s_iflags |= SB_I_NOEXEC;
+
        return root;
 }