[ovs-build] Passed: ovsrobot/ovs#2506 (series_174235 - 3ddf2b7)

[Travis CI]

Build Update for ovsrobot/ovs
-------------------------------------

Build: #2506
Status: Passed

Duration: 18 mins and 18 secs
Commit: 3ddf2b7 (series_174235)
Author: William Tu
Message: ovsdb-idl: Fix NULL deref reported by Coverity.

When 'datum.values' or 'datum.keys' is NULL, some code path calling
into ovsdb_idl_txn_write__ triggers NULL deref.  An example is below:

ovsrec_open_vswitch_set_cur_cfg(const struct ovsrec_open_vswitch
{
    struct ovsdb_datum datum;
    union ovsdb_atom key;

    datum.n = 1;
    datum.keys = &key;

    key.integer = cur_cfg;
//  1. assign_zero: Assigning: datum.values = NULL.
    datum.values = NULL;
//  CID 1421356 (#1 of 1): Explicit null dereferenced (FORWARD_NULL)
//  2. var_deref_model: Passing &datum to ovsdb_idl_txn_write_clone,\
//     which dereferences null datum.values.
    ovsdb_idl_txn_write_clone(&row->header_, &ovsrec_open_vswitch_col
}

And with the following calls:
ovsdb_idl_txn_write_clone
  ovsdb_idl_txn_write__
    6. deref_parm_in_call: Function ovsdb_datum_destroy dereferences
       datum->values
	ovsdb_datum_destroy

And another possible NULL deref is at ovsdb_datum_equals(). Fix the
two by adding additional checks.

Signed-off-by: William Tu <u9012063 at gmail.com>
Signed-off-by: 0-day Robot <robot at bytheb.org>

View the changeset: https://github.com/ovsrobot/ovs/compare/73c4e0c1250c...3ddf2b7bfe5a

View the full build log and details: https://travis-ci.org/github/ovsrobot/ovs/builds/682367228?utm_medium=notification&utm_source=email

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