AuxXxilium/linux_dsm_epyc7002
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4ac30c4b36
linux_dsm_epyc7002/net
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Martin KaFai Lau 4ac30c4b36 bpf: udp: ipv6: Avoid running reuseport's bpf_prog from __udp6_lib_err 
__udp6_lib_err() may be called when handling icmpv6 message. For example,
the icmpv6 toobig(type=2).  __udp6_lib_lookup() is then called
which may call reuseport_select_sock().  reuseport_select_sock() will
call into a bpf_prog (if there is one).

reuseport_select_sock() is expecting the skb->data pointing to the
transport header (udphdr in this case).  For example, run_bpf_filter()
is pulling the transport header.

However, in the __udp6_lib_err() path, the skb->data is pointing to the
ipv6hdr instead of the udphdr.

One option is to pull and push the ipv6hdr in __udp6_lib_err().
Instead of doing this, this patch follows how the original
commit 538950a1b7 ("soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPF")
was done in IPv4, which has passed a NULL skb pointer to
reuseport_select_sock().

Fixes: 538950a1b7 ("soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPF")
Cc: Craig Gallek <kraig@google.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Craig Gallek <kraig@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-06-03 13:38:48 -07:00
..
6lowpan 6lowpan: Off by one handling ->nexthdr 2019-04-23 19:09:58 +02:00
9p
802
8021q vlan: Mark expected switch fall-through 2019-05-20 11:38:55 -07:00
appletalk Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-05-02 22:14:21 -04:00
atm net: atm: clean up a range check 2019-05-05 10:25:52 -07:00
ax25 net: ax25: fix misuse of %x 2019-04-21 10:37:26 -07:00
batman-adv This feature/cleanup patchset includes the following patches: 2019-05-09 09:44:17 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
bpf bpf: Introduce bpf sk local storage 2019-04-27 09:07:04 -07:00
bpfilter treewide: prefix header search paths with $(srctree)/ 2019-05-18 11:49:57 +09:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2019-05-13 08:55:15 -07:00
caif net: caif: fix the value of size argument of snprintf 2019-05-17 11:31:15 -07:00
can netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
ceph AFS fixes 2019-05-16 17:00:13 -07:00
core bpf: sockmap, fix use after free from sleep in psock backlog workqueue 2019-05-24 23:18:42 +02:00
dcb netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
dccp net: dccp : proto: remove Unneeded variable "err" 2019-05-12 13:21:30 -07:00
decnet netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
dns_resolver dns_resolver: Allow used keys to be invalidated 2019-05-15 17:35:54 +01:00
dsa net: dsa: Initialize DSA_SKB_CB(skb)->deferred_xmit variable 2019-05-12 13:19:46 -07:00
ethernet net: ethernet: support of_get_mac_address new ERR_PTR error 2019-05-07 12:22:47 -07:00
hsr genetlink: optionally validate strictly/dumps 2019-04-27 17:07:22 -04:00
ieee802154 genetlink: optionally validate strictly/dumps 2019-04-27 17:07:22 -04:00
ife
ipv4 net: Treat sock->sk_drops as an unsigned int when printing 2019-05-19 10:31:10 -07:00
ipv6 bpf: udp: ipv6: Avoid running reuseport's bpf_prog from __udp6_lib_err 2019-06-03 13:38:48 -07:00
iucv
kcm
key
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-05-07 17:22:09 -07:00
l3mdev
lapb
llc llc: Check address length before reading address field 2019-04-12 10:25:03 -07:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-05-02 22:14:21 -04:00
mac802154
mpls netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
ncsi genetlink: optionally validate strictly/dumps 2019-04-27 17:07:22 -04:00
netfilter net: replace CONFIG_DEBUG_KERNEL with CONFIG_DEBUG_MISC 2019-05-14 19:52:50 -07:00
netlabel genetlink: optionally validate strictly/dumps 2019-04-27 17:07:22 -04:00
netlink net: Treat sock->sk_drops as an unsigned int when printing 2019-05-19 10:31:10 -07:00
netrom net: rework SIOCGSTAMP ioctl handling 2019-04-19 14:07:40 -07:00
nfc genetlink: optionally validate strictly/dumps 2019-04-27 17:07:22 -04:00
nsh
openvswitch openvswitch: Replace removed NF_NAT_NEEDED with IS_ENABLED(CONFIG_NF_NAT) 2019-05-08 09:43:15 -07:00
packet packet: Fix error path in packet_init 2019-05-09 13:45:46 -07:00
phonet net: Treat sock->sk_drops as an unsigned int when printing 2019-05-19 10:31:10 -07:00
psample genetlink: optionally validate strictly/dumps 2019-04-27 17:07:22 -04:00
qrtr net: qrtr: Fix message type of outgoing packets 2019-05-20 20:50:31 -04:00
rds mm/gup: change GUP fast to use flags rather than a write 'bool' 2019-05-14 09:47:46 -07:00
rfkill *: convert stream-like files from nonseekable_open -> stream_open 2019-05-06 17:46:41 +03:00
rose Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-04-25 23:52:29 -04:00
rxrpc rxrpc: Allow the kernel to mark a call as being non-interruptible 2019-05-16 16:25:20 +01:00
sched net/sched: avoid double free on matchall reoffload 2019-05-08 16:34:58 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
smc 5.2 Merge Window pull request 2019-05-09 09:02:46 -07:00
strparser net: strparser: make it explicitly non-modular 2019-04-22 21:50:54 -07:00
sunrpc This pull consists mostly of nfsd container work: 2019-05-15 18:21:43 -07:00
switchdev
tipc tipc: fix modprobe tipc failed after switch order of device registration 2019-05-20 10:45:43 -07:00
tls net/tls: handle errors from padding_length() 2019-05-09 16:37:39 -07:00
unix
vmw_vsock vsock/virtio: Initialize core virtio vsock before registering the driver 2019-05-18 10:50:28 -07:00
wimax genetlink: optionally validate strictly/dumps 2019-04-27 17:07:22 -04:00
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
x25 net: rework SIOCGSTAMP ioctl handling 2019-04-19 14:07:40 -07:00
xdp mm/gup: replace get_user_pages_longterm() with FOLL_LONGTERM 2019-05-14 09:47:45 -07:00
xfrm xfrm: ressurrect "Fix uninitialized memory read in _decode_session4" 2019-05-16 14:14:47 -07:00
compat.c net: rework SIOCGSTAMP ioctl handling 2019-04-19 14:07:40 -07:00
Kconfig
Makefile
socket.c net: fix kernel-doc warnings for socket.c 2019-05-19 10:33:22 -07:00
sysctl_net.c