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34fe5a1cf9
linux/net
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David Ahern 34fe5a1cf9 ipv6: fib6_select_path can not use out path for nexthop objects 
Brian reported a crash in IPv6 code when using rpfilter with a setup
running FRR and external nexthop objects. The root cause of the crash
is fib6_select_path setting fib6_nh in the result to NULL because of
an improper check for nexthop objects.

More specifically, rpfilter invokes ip6_route_lookup with flowi6_oif
set causing fib6_select_path to be called with have_oif_match set.
fib6_select_path has early check on have_oif_match and jumps to the
out label which presumes a builtin fib6_nh. This path is invalid for
nexthop objects; for external nexthops fib6_select_path needs to just
return if the fib6_nh has already been set in the result otherwise it
returns after the call to nexthop_path_fib6_result. Update the check
on have_oif_match to not bail on external nexthops.

Update selftests for this problem.

Fixes: f88d8ea67f ("ipv6: Plumb support for nexthop object in a fib6_info")
Reported-by: Brian Rak <brak@choopa.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-06 13:24:16 -07:00
..
6lowpan treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
9p net: Add MODULE_DESCRIPTION entries to network modules 2020-06-20 21:33:57 -07:00
802 net: 802: psnap.c: Use built-in RCU list checking 2020-02-24 13:02:53 -08:00
8021q net: get rid of lockdep_set_class_and_subclass() 2020-06-28 21:37:23 -07:00
appletalk ipv4,appletalk: move SIOCADDRT and SIOCDELRT handling into ->compat_ioctl 2020-05-18 17:35:02 -07:00
atm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-06-13 16:27:13 -07:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
batman-adv net: change addr_list_lock back to static key 2020-06-09 12:59:45 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-06-03 16:27:18 -07:00
bpf bpf: Add tests for PTR_TO_BTF_ID vs. null comparison 2020-06-30 22:21:29 +02:00
bpfilter bpfilter: document build requirements for bpfilter_umh 2020-05-26 00:03:16 +09:00
bridge bridge: mrp: Fix endian conversion and some other warnings 2020-06-28 20:44:10 -07:00
caif treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
can treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
ceph libceph: don't omit used_replica in target_copy() 2020-06-16 16:02:08 +02:00
core sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-03 14:34:53 -07:00
dcb treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
dccp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-06-13 16:27:13 -07:00
decnet treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
dns_resolver docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
dsa dsa: Allow forwarding of redirected IGMP traffic 2020-06-24 14:39:43 -07:00
ethernet net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
ethtool ethtool: fix error handling in linkstate_prepare_data() 2020-06-25 16:17:16 -07:00
hsr hsr: fix interface leak in error path of hsr_dev_finalize() 2020-07-04 18:02:48 -07:00
ieee802154 treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
ife
ipv4 tcp: md5: allow changing MD5 keys in all socket states 2020-07-02 14:07:49 -07:00
ipv6 ipv6: fib6_select_path can not use out path for nexthop objects 2020-07-06 13:24:16 -07:00
iucv net/af_iucv: clean up function prototypes 2020-05-19 12:50:14 -07:00
kcm treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
key
l2tp treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
l3mdev treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
lapb treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
llc llc: make sure applications use ARPHRD_ETHER 2020-06-28 21:41:23 -07:00
mac80211 mac80211: allow rx of mesh eapol frames with default rx key 2020-06-25 12:55:45 +02:00
mac802154 treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
mpls treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
mptcp mptcp: drop sndr_key in mptcp_syn_options 2020-06-22 21:06:39 -07:00
ncsi treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
netfilter netfilter: conntrack: refetch conntrack after nf_conntrack_update() 2020-07-03 14:47:03 +02:00
netlabel treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
netlink genetlink: remove genl_bind 2020-07-01 15:49:11 -07:00
netrom net: change addr_list_lock back to static key 2020-06-09 12:59:45 -07:00
nfc treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
nsh treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
openvswitch openvswitch: take into account de-fragmentation/gso_size in execute_check_pkt_len 2020-06-24 14:34:58 -07:00
packet treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
phonet sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
psample net: psample: fix build error when CONFIG_INET is not enabled 2020-05-23 16:36:05 -07:00
qrtr net: qrtr: Fix an out of bounds read qrtr_endpoint_post() 2020-06-30 18:36:13 -07:00
rds rds: If one path needs re-connection, check all and re-connect 2020-07-01 17:35:17 -07:00
rfkill rfkill: Fix incorrect check to avoid NULL pointer dereference 2019-12-16 10:15:49 +01:00
rose net: change addr_list_lock back to static key 2020-06-09 12:59:45 -07:00
rxrpc rxrpc: Fix notification call on completion of discarded calls 2020-06-20 21:31:43 -07:00
sched sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-03 14:34:53 -07:00
sctp sctp: Don't advertise IPv4 addresses if ipv6only is set on the socket 2020-06-25 16:11:33 -07:00
smc treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
strparser
sunrpc NFS Client Updates for Linux 5.8 2020-06-11 12:22:41 -07:00
switchdev treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-06-13 16:27:13 -07:00
tls treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
unix treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
vmw_vsock vsock/vmci: make vmci_vsock_transport_cb() static 2020-06-05 13:18:26 -07:00
wimax
wireless nl80211: fix memory leak when parsing NL80211_ATTR_HE_BSS_COLOR 2020-06-26 11:52:57 +02:00
x25 treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
xdp xsk: Use dma_need_sync instead of reimplenting it 2020-06-30 15:44:03 +02:00
xfrm net: xfrmi: implement header_ops->parse_protocol for AF_PACKET 2020-06-30 12:29:39 -07:00
compat.c switch cmsghdr_from_user_compat_to_kern() to copy_from_user() 2020-06-01 12:05:45 -07:00
devres.c net: devres: provide devm_register_netdev() 2020-05-23 16:56:17 -07:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
socket.c net: remove kernel_setsockopt 2020-05-29 13:10:39 -07:00
sysctl_net.c