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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>
This commit is contained in:
Dan Carpenter 2013-02-21 16:41:57 -08:00 committed by Linus Torvalds
parent 9a8ab1c399
commit bffea77c08
1 changed files with 1 additions and 1 deletions
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2
kernel/compat.c
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@ -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);