multipath-tools: fix the bug while processing vpd 0x83 designation descriptors

This patch fixes the bug while processing the vpd 0x83 designation descriptors.
Removing the buggy check(> sizeof(buf))while loping the descriptors. Sizeof(buf) will
always return 8 (in 64 bit machine). Descriptor length can be more than 8 bytes in
some cases. This was causing problems while configuring my storage with alua.

Signed-off-by: Babu Moger <babu.moger@netapp.com>

diff --git a/libmultipath/prioritizers/alua_rtpg.c b/libmultipath/prioritizers/alua_rtpg.c
index f98ae9e..b76db72 100644 (file)
--- a/libmultipath/prioritizers/alua_rtpg.c
+++ b/libmultipath/prioritizers/alua_rtpg.c
@@ -184,9 +184,6 @@ get_target_port_group(int fd)
 
                rc = -RTPG_NO_TPG_IDENTIFIER;
                FOR_EACH_VPD83_DSCR(vpd83, dscr) {
-                       if ((((char *) dscr) - ((char *) vpd83)) > sizeof(buf))
-                               break;
-
                        if (vpd83_dscr_istype(dscr, IDTYPE_TARGET_PORT_GROUP)) {
                                struct vpd83_tpg_dscr * p;