compat: return -EFAULT on error in waitid()

The copy_to_user() call returns the number of bytes remaining but we want to return -EFAULT on error. Fixes "x32: fix waitid()" Signed-off-by: Dan Carpenter <[email protected]> Cc: Al Viro <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
josf · Feb 22, 2013 · bffea77 · bffea77
1 parent 9a8ab1c
commit bffea77
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/kernel/compat.c b/kernel/compat.c
@@ -593,7 +593,7 @@ COMPAT_SYSCALL_DEFINE5(waitid,
 		else
 			ret = put_compat_rusage(&ru, uru);
 		if (ret)
-			return ret;
+			return -EFAULT;
 	}
 
 	BUG_ON(info.si_code & __SI_MASK);