From: David Howells <dhowells@redhat.com>
Date: Thu, 4 Oct 2012 13:21:23 +0000 (+0100)
Subject: X.509: Fix indefinite length element skip error handling
X-Git-Tag: v3.7-rc1~2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dbadc17683e6c673a69b236c0f041b931cc55c42;p=pandora-kernel.git

X.509: Fix indefinite length element skip error handling

asn1_find_indefinite_length() returns an error indicator of -1, which the
caller asn1_ber_decoder() places in a size_t (which is usually unsigned) and
then checks to see whether it is less than 0 (which it can't be).  This can
lead to the following warning:

	lib/asn1_decoder.c:320 asn1_ber_decoder()
		warn: unsigned 'len' is never less than zero.

Instead, asn1_find_indefinite_length() update the caller's idea of the data
cursor and length separately from returning the error code.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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