X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=kernel%2Fsys.c;h=c5cb5b99cb8152808f569f6b993010a33e646bce;hb=c0703c12ef6744b6d2565ec67a15aaf25d534abd;hp=241507f23eca097871bec58f5976476f352f3d75;hpb=274a2f5ddb3e8bf67e561574e6529a65a4039240;p=karo-tx-linux.git

diff --git a/kernel/sys.c b/kernel/sys.c
index 241507f23eca..c5cb5b99cb81 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -368,6 +368,7 @@ EXPORT_SYMBOL(unregister_reboot_notifier);
 void kernel_restart(char *cmd)
 {
 	kernel_restart_prepare(cmd);
+	disable_nonboot_cpus();
 	if (!cmd)
 		printk(KERN_EMERG "Restarting system.\n");
 	else
@@ -1788,15 +1789,15 @@ SYSCALL_DEFINE1(umask, int, mask)
 #ifdef CONFIG_CHECKPOINT_RESTORE
 static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
 {
-	struct file *exe_file;
+	struct fd exe;
 	struct dentry *dentry;
 	int err;
 
-	exe_file = fget(fd);
-	if (!exe_file)
+	exe = fdget(fd);
+	if (!exe.file)
 		return -EBADF;
 
-	dentry = exe_file->f_path.dentry;
+	dentry = exe.file->f_path.dentry;
 
 	/*
 	 * Because the original mm->exe_file points to executable file, make
@@ -1805,7 +1806,7 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
 	 */
 	err = -EACCES;
 	if (!S_ISREG(dentry->d_inode->i_mode)	||
-	    exe_file->f_path.mnt->mnt_flags & MNT_NOEXEC)
+	    exe.file->f_path.mnt->mnt_flags & MNT_NOEXEC)
 		goto exit;
 
 	err = inode_permission(dentry->d_inode, MAY_EXEC);
@@ -1839,12 +1840,12 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
 		goto exit_unlock;
 
 	err = 0;
-	set_mm_exe_file(mm, exe_file);
+	set_mm_exe_file(mm, exe.file);	/* this grabs a reference to exe.file */
 exit_unlock:
 	up_write(&mm->mmap_sem);
 
 exit:
-	fput(exe_file);
+	fdput(exe);
 	return err;
 }
 
@@ -2204,7 +2205,7 @@ static int __orderly_poweroff(void)
 		return -ENOMEM;
 	}
 
-	ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_NO_WAIT,
+	ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_WAIT_EXEC,
 				      NULL, argv_cleanup, NULL);
 	if (ret == -ENOMEM)
 		argv_free(argv);