Fix initialization of CMCI/CMCP interrupts

[deliverable/linux.git] / kernel / fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index 4133876d8cd23838037bb62540197f2308578685..1766d324d5e35c38ca3910ea237857c0600d1a02 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -413,7 +413,7 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
                tmp->vm_next = tmp->vm_prev = NULL;
                file = tmp->vm_file;
                if (file) {
-                       struct inode *inode = file->f_path.dentry->d_inode;
+                       struct inode *inode = file_inode(file);
                        struct address_space *mapping = file->f_mapping;
 
                        get_file(file);
@@ -1141,6 +1141,9 @@ static struct task_struct *copy_process(unsigned long clone_flags,
        if ((clone_flags & (CLONE_NEWNS|CLONE_FS)) == (CLONE_NEWNS|CLONE_FS))
                return ERR_PTR(-EINVAL);
 
+       if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS))
+               return ERR_PTR(-EINVAL);
+
        /*
         * Thread groups must share signals as well, and detached threads
         * can only be started up within the thread group.
@@ -1807,7 +1810,7 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
         * If unsharing a user namespace must also unshare the thread.
         */
        if (unshare_flags & CLONE_NEWUSER)
-               unshare_flags |= CLONE_THREAD;
+               unshare_flags |= CLONE_THREAD | CLONE_FS;
        /*
         * If unsharing a pid namespace must also unshare the thread.
         */
@@ -1861,10 +1864,8 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
                        exit_sem(current);
                }
 
-               if (new_nsproxy) {
+               if (new_nsproxy)
                        switch_task_namespaces(current, new_nsproxy);
-                       new_nsproxy = NULL;
-               }
 
                task_lock(current);
 
@@ -1894,9 +1895,6 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
                }
        }
 
-       if (new_nsproxy)
-               put_nsproxy(new_nsproxy);
-
 bad_unshare_cleanup_cred:
        if (new_cred)
                put_cred(new_cred);