mir/ovs
2
0
Fork 0
mirror of https://github.com/openvswitch/ovs synced 2025-08-31 06:15:47 +00:00
Code Issues Releases Wiki Activity

ofp-parse: Fix typo in consistency check.

Browse Source 
This check in parse_ofp_str__() attempted to detect inconsistencies
between matches and actions, or inconsistencies within the actions. In
this case, ofpacts_check() would effectively zero the "usable_protocols"
and return 0 (ie, OK). However, when checking the return parameter, it
checks the pointer rather than the value.

In practice, this seems to only come up for fields which are used
internally in OVS and not exposed for matching from the controller, like
tunnel flags or skb_priority.

Found by MIT STACK undefined behaviour checker.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Joe Stringer
2015-07-09 14:40:53 -07:00
parent 09b0fa9c55
commit a805558c40
2 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
lib/ofp-parse.c
View File

@@ -477,7 +477,7 @@ parse_ofp_str__(struct ofputil_flow_mod *fm, int command, char *string,
err = ofpacts_check(ofpacts.data, ofpacts.size, &fm->match.flow,
OFPP_MAX, fm->table_id, 255, usable_protocols);
if (!err && !usable_protocols) {
if (!err && !*usable_protocols) {
err = OFPERR_OFPBAC_MATCH_INCONSISTENT;
}
if (err) {