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>
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@ -593,7 +593,7 @@ COMPAT_SYSCALL_DEFINE5(waitid,
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else
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ret = put_compat_rusage(&ru, uru);
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if (ret)
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return ret;
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return -EFAULT;
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}
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BUG_ON(info.si_code & __SI_MASK);
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