[PATCH] lib/pb-protocol: Fix NULL dereference on non-powerpc

[Samuel Mendoza-Jonas]

If not running on a powerpc platform the bmc_mac pointer remains NULL.
If this is the case set an address of zero when serialising rather
than dereferencing the pointer.

Signed-off-by: Samuel Mendoza-Jonas <sam.mj at au1.ibm.com>
---
 lib/pb-protocol/pb-protocol.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/pb-protocol/pb-protocol.c b/lib/pb-protocol/pb-protocol.c
index 9d07a58..42506e2 100644
--- a/lib/pb-protocol/pb-protocol.c
+++ b/lib/pb-protocol/pb-protocol.c
@@ -424,7 +424,10 @@ int pb_protocol_serialise_system_info(const struct system_info *sysinfo,
 		pos += pb_protocol_serialise_string(pos, bd_info->mountpoint);
 	}
 
-	memcpy(pos, sysinfo->bmc_mac, HWADDR_SIZE);
+	if (sysinfo->bmc_mac)
+		memcpy(pos, sysinfo->bmc_mac, HWADDR_SIZE);
+	else
+		memset(pos, 0, HWADDR_SIZE);
 	pos += HWADDR_SIZE;
 
 	assert(pos <= buf + buf_len);
-- 
2.6.4