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act_connmark: avoid crashing on malformed nlattrs with null parms

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am: 710fbeb3f5

Change-Id: Ie14c5fad2baf06f9d7669ef68b16023bd165af17
This commit is contained in:
Etienne Noss 2017-03-22 11:30:47 +00:00 • committed by android-build-merger
commit 2e755cde9f
1 changed files with 3 additions and 0 deletions
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3
net/sched/act_connmark.c
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@ -109,6 +109,9 @@ static int tcf_connmark_init(struct net *net, struct nlattr *nla,
if (ret < 0)
return ret;
if (!tb[TCA_CONNMARK_PARMS])
return -EINVAL;
parm = nla_data(tb[TCA_CONNMARK_PARMS]);
if (!tcf_hash_check(parm->index, a, bind)) {