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8108a77515
linux/net/core
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John Fastabend 8108a77515 bpf: bpf_compute_data uses incorrect cb structure 
SK_SKB program types use bpf_compute_data to store the end of the
packet data. However, bpf_compute_data assumes the cb is stored in the
qdisc layer format. But, for SK_SKB this is the wrong layer of the
stack for this type.

It happens to work (sort of!) because in most cases nothing happens
to be overwritten today. This is very fragile and error prone.
Fortunately, we have another hole in tcp_skb_cb we can use so lets
put the data_end value there.

Note, SK_SKB program types do not use data_meta, they are failed by
sk_skb_is_valid_access().

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-29 11:18:48 +09:00
..
datagram.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-01 17:42:05 -07:00
dev_addr_lists.c
dev_ioctl.c dev_ioctl: add missing NETDEV_CHANGE_TX_QUEUE_LEN event notification 2017-10-16 21:23:10 +01:00
dev.c tun: call dev_get_valid_name() before register_netdevice() 2017-10-16 21:02:54 +01:00
devlink.c devlink: Add IPv6 header for dpipe 2017-08-31 14:42:19 -07:00
drop_monitor.c drop_monitor: use setup_timer 2017-03-12 23:47:16 -07:00
dst_cache.c net: dst_cache_per_cpu_dst_set() can be static 2016-03-18 17:45:08 -04:00
dst.c net: check type when freeing metadata dst 2017-08-21 10:57:38 -07:00
ethtool.c net: ethtool: remove error check for legacy setting transceiver type 2017-10-22 02:14:18 +01:00
fib_notifier.c net: Add module reference to FIB notifiers 2017-09-01 20:33:42 -07:00
fib_rules.c rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
filter.c bpf: bpf_compute_data uses incorrect cb structure 2017-10-29 11:18:48 +09:00
flow_dissector.c flow_dissector: Add limit for number of headers to dissect 2017-09-05 11:40:08 -07:00
gen_estimator.c net_sched: gen_estimator: fix scaling error in bytes/packets samples 2017-09-13 13:30:53 -07:00
gen_stats.c net_sched: gen_estimator: complete rewrite of rate estimators 2016-12-05 15:21:59 -05:00
gro_cells.c net: Generic XDP 2017-04-25 13:33:49 -04:00
hwbm.c net: hwbm: Fix unbalanced spinlock in error case 2016-05-25 12:35:09 -07:00
link_watch.c
lwt_bpf.c net: add extack arg to lwtunnel build state 2017-05-30 11:55:32 -04:00
lwtunnel.c ipv6: sr: define core operations for seg6local lightweight tunnel 2017-08-07 14:16:22 -07:00
Makefile net: core: Make the FIB notification chain generic 2017-08-03 15:35:59 -07:00
neighbour.c rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
net_namespace.c net: call newid/getid without rtnl mutex held 2017-08-09 16:57:38 -07:00
net-procfs.c net-procfs: Use vsnprintf extension %phN 2017-06-04 19:52:58 -04:00
net-sysfs.c net: style cleanups 2017-08-18 22:38:47 -07:00
net-sysfs.h
net-traces.c bridge: add tracepoint in br_fdb_update 2017-08-31 11:42:41 -07:00
netclassid_cgroup.c cgroup: add @flags to css_task_iter_start() and implement CSS_TASK_ITER_PROCS 2017-07-21 11:14:51 -04:00
netevent.c netevent: remove automatic variable in register_netevent_notifier() 2015-05-31 00:03:21 -07:00
netpoll.c netpoll: Fix device name check in netpoll_setup() 2017-07-26 17:01:43 -07:00
netprio_cgroup.c net: break include loop netdevice.h, dsa.h, devlink.h 2017-03-28 22:46:04 -07:00
pktgen.c net: convert sk_buff.users from atomic_t to refcount_t 2017-07-01 07:39:07 -07:00
ptp_classifier.c ptp: Change ptp_class to a proper bitmask 2015-11-03 11:08:22 -05:00
request_sock.c ipv4: Namespaceify tcp_max_syn_backlog knob 2016-12-29 11:38:31 -05:00
rtnetlink.c net: enable interface alias removal via rtnl 2017-10-16 20:52:43 +01:00
scm.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/user.h> 2017-03-02 08:42:29 +01:00
secure_seq.c tcp: Namespaceify sysctl_tcp_timestamps 2017-06-08 10:53:29 -04:00
skbuff.c sock: correct sk_wmem_queued accounting on efault in tcp zerocopy 2017-10-22 01:45:52 +01:00
sock_diag.c netlink: extended ACK reporting 2017-04-13 13:58:20 -04:00
sock_reuseport.c soreuseport: fix initialization race 2017-10-22 02:03:51 +01:00
sock.c net: call cgroup_sk_alloc() earlier in sk_clone_lock() 2017-10-10 20:24:29 -07:00
stream.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
sysctl_net_core.c net: move somaxconn init from sysctl code 2017-05-25 13:12:17 -04:00
timestamping.c net: skb_defer_rx_timestamp should check for phydev before setting up classify 2015-07-09 14:17:15 -07:00
tso.c net: tso: add support for IPv6 2015-10-26 22:24:22 -07:00
utils.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00