Commit bffea77c authored Feb 21, 2013 by Dan Carpenter Committed by Linus Torvalds Feb 21, 2013

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 <dan.carpenter@oracle.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 9a8ab1c3

kernel/compat.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);