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ovsdb: Fix potential leak when making diff of conditions.

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OVN unit tests highlight this:

ERROR: LeakSanitizer: detected memory leaks
Direct leak of 1344 byte(s) in 1 object(s) allocated from:
    0 0x4db0b7 in calloc (ovsdb/ovsdb-server+0x4db0b7)
    1 0x5c2162 in xcalloc__ lib/util.c:124:31
    2 0x5c221c in xcalloc lib/util.c:161:12
    3 0x54afbc in ovsdb_condition_diff ovsdb/condition.c:527:21
    4 0x529da6 in ovsdb_monitor_table_condition_update ovsdb/monitor.c:824:5
    5 0x524fa4 in ovsdb_jsonrpc_parse_monitor_cond_change_request ovsdb/jsonrpc-server.c:1557:13
    6 0x5235c3 in ovsdb_jsonrpc_monitor_cond_change ovsdb/jsonrpc-server.c:1624:25
    7 0x5217f2 in ovsdb_jsonrpc_session_got_request ovsdb/jsonrpc-server.c:1034:17
    8 0x520ee6 in ovsdb_jsonrpc_session_run ovsdb/jsonrpc-server.c:572:17
    9 0x51ffbe in ovsdb_jsonrpc_session_run_all ovsdb/jsonrpc-server.c:602:21
    10 0x51fbcf in ovsdb_jsonrpc_server_run ovsdb/jsonrpc-server.c:417:9
    11 0x517550 in main_loop ovsdb/ovsdb-server.c:224:9
    12 0x512e80 in main ovsdb/ovsdb-server.c:507:5
    13 0x7f9ecf675b74 in __libc_start_main (/lib64/libc.so.6+0x27b74)

Fixes: ef1da757f016 ("ovsdb: condition: Process condition changes incrementally.")
Signed-off-by: Xavier Simonart <xsimonar@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
Xavier Simonart 2023-09-22 15:18:23 +02:00 committed by Ilya Maximets
parent a40c55eff9
commit 4fc02650ae
3 changed files with 10 additions and 3 deletions
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5
ovsdb/condition.c
View File

@ -550,10 +550,15 @@ ovsdb_condition_diff(struct ovsdb_condition *diff,
&b->clauses[j]); &b->clauses[j]);
} }
if (diff->n_clauses) {
diff->optimized = a->optimized && b->optimized; diff->optimized = a->optimized && b->optimized;
if (diff->optimized) { if (diff->optimized) {
ovsdb_condition_optimize(diff); ovsdb_condition_optimize(diff);
} }
} else {
free(diff->clauses);
diff->clauses = NULL;
}
} }
void void

1
ovsdb/monitor.c
View File

@ -824,6 +824,7 @@ ovsdb_monitor_table_condition_update(
ovsdb_condition_destroy(&mtc->new_condition); ovsdb_condition_destroy(&mtc->new_condition);
ovsdb_condition_clone(&mtc->new_condition, &cond); ovsdb_condition_clone(&mtc->new_condition, &cond);
ovsdb_condition_destroy(&cond); ovsdb_condition_destroy(&cond);
ovsdb_condition_destroy(&mtc->diff_condition);
ovsdb_condition_diff(&mtc->diff_condition, ovsdb_condition_diff(&mtc->diff_condition,
&mtc->old_condition, &mtc->new_condition); &mtc->old_condition, &mtc->new_condition);
ovsdb_monitor_condition_add_columns(dbmon, ovsdb_monitor_condition_add_columns(dbmon,

1
tests/ovsdb-monitor.at
View File

@ -586,6 +586,7 @@ row,action,name,number,_version
[[]], [[]],
[], [],
[[[[["name","==","one"],["name","==","two"]]]], [[[[["name","==","one"],["name","==","two"]]]],
[[[["name","==","two"],["name","==","one"]]]],
[[[["name","==","one"]]]], [[[["name","==","one"]]]],
[[[false]]], [[[false]]],
[[[true]]]]) [[[true]]]])