netlink: do not crash when linux message translation fails.
CID: 1498889 MFC after: 2 weeks
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@ -430,9 +430,11 @@ nl_receive_message(struct nlmsghdr *hdr, int remaining_length,
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struct nlmsghdr *hdr_orig = hdr;
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hdr = linux_netlink_p->msg_from_linux(nlp->nl_proto, hdr, npt);
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if (hdr == NULL) {
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npt->hdr = hdr_orig;
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/* Failed to translate to kernel format. Report an error back */
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hdr = hdr_orig;
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npt->hdr = hdr;
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if (hdr->nlmsg_flags & NLM_F_ACK)
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nlmsg_ack(nlp, EAGAIN, hdr, npt);
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nlmsg_ack(nlp, EOPNOTSUPP, hdr, npt);
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return (0);
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}
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}
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