Hello David Lebrun,
The patch 1ababeba4a21: "ipv6: implement dataplane support for rthdr
type 4 (Segment Routing Header)" from Nov 8, 2016, leads to the
following static checker warning:
net/ipv6/exthdrs.c:391 ipv6_srh_rcv()
error: double free of 'skb'
net/ipv6/exthdrs.c
384
385 if (hdr->segments_left >= (hdr->hdrlen >> 1)) {
386 __IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
387 IPSTATS_MIB_INHDRERRORS);
388 icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
^^^
Freed here.
389 ((&hdr->segments_left) -
390 skb_network_header(skb)));
391 kfree_skb(skb);
^^^
And again here.
392 return -1;
393 }
394
regards,
dan carpenter
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