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act_connmark: avoid crashing on malformed nlattrs with null parms

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am: 47c8dc47c0

Change-Id: Id90f1df9017b4c441658827c7b31b9f141498ad5
This commit is contained in:
Etienne Noss
2017-03-22 11:59:55 +00:00
committed by android-build-merger
parent 324876828b 47c8dc47c0
commit 97097b23df
1 changed files with 3 additions and 0 deletions
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3
net/sched/act_connmark.c
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@@ -113,6 +113,9 @@ 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(tn, parm->index, a, bind)) {