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1a2391c30c
linux/net
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Jeffrey Altman 1a2391c30c rxrpc: Fix detection of out of order acks 
The rxrpc packet serial number cannot be safely used to compute out of
order ack packets for several reasons:

 1. The allocation of serial numbers cannot be assumed to imply the order
    by which acks are populated and transmitted.  In some rxrpc
    implementations, delayed acks and ping acks are transmitted
    asynchronously to the receipt of data packets and so may be transmitted
    out of order.  As a result, they can race with idle acks.

 2. Serial numbers are allocated by the rxrpc connection and not the call
    and as such may wrap independently if multiple channels are in use.

In any case, what matters is whether the ack packet provides new
information relating to the bounds of the window (the firstPacket and
previousPacket in the ACK data).

Fix this by discarding packets that appear to wind back the window bounds
rather than on serial number procession.

Fixes: 298bc15b20 ("rxrpc: Only take the rwind and mtu values from latest ACK")
Signed-off-by: Jeffrey Altman <jaltman@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-12 16:57:23 -07:00
..
6lowpan 6lowpan: fix debugfs_simple_attr.cocci warnings 2019-01-22 09:51:19 +01:00
9p 9p/net: fix memory leak in p9_client_create 2019-03-13 11:50:04 +01:00
802
8021q vlan: conditional inclusion of FCoE hooks to match netdevice.h and bnx2x 2019-04-04 17:18:34 -07:00
appletalk appletalk: Fix potential NULL pointer dereference in unregister_snap_client 2019-03-15 11:25:48 -07:00
atm net: atm: Add another IS_ENABLED(CONFIG_COMPAT) in atm_dev_ioctl 2019-03-07 10:14:50 -08:00
ax25 ax25: fix possible use-after-free 2019-01-23 11:18:00 -08:00
batman-adv batman-adv: Fix genl notification for throughput_override 2019-03-25 09:31:19 +01:00
bluetooth Bluetooth: Check address length before reading address field 2019-04-12 10:25:03 -07:00
bpf bpf: fix warning about using plain integer as NULL 2019-03-08 21:17:07 +01:00
bpfilter bpfilter: re-add header search paths to tools include to fix build error 2019-02-23 13:34:40 -08:00
bridge net: bridge: multicast: use rcu to access port list from br_multicast_start_querier 2019-04-11 11:13:51 -07:00
caif net: caif: use skb helpers instead of open-coding them 2019-02-17 11:01:17 -08:00
can can: bcm: check timer values before ktime conversion 2019-01-22 11:33:46 +01:00
ceph libceph: fix breakage caused by multipage bvecs 2019-03-25 22:28:07 +01:00
core bpf: Check address length before reading address family 2019-04-12 10:25:03 -07:00
dcb
dccp dccp: Fix memleak in __feat_register_sp 2019-04-01 18:15:10 -07:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-01-29 21:18:54 -08:00
dns_resolver
dsa net: dsa: Implement flow_dissect callback for tag_qca 2019-03-28 16:57:19 -07:00
ethernet net/ethernet: Add parse_protocol header_ops support 2019-02-22 12:55:31 -08:00
hsr net/hsr: fix possible crash in add_timer() 2019-03-07 11:02:08 -08:00
ieee802154 net: remove unused struct inet_frag_queue.fragments field 2019-02-26 08:27:05 -08:00
ife
ipv4 dctcp: more accurate tracking of packets delivery 2019-04-11 21:31:03 -07:00
ipv6 udpv6: Check address length before reading address family 2019-04-12 10:25:03 -07:00
iucv iucv: Remove SKB list assumptions. 2018-11-10 16:55:11 -08:00
kcm kcm: switch order of device registration to fix a crash 2019-04-01 14:59:20 -07:00
key af_key: unconditionally clone on broadcast 2019-02-12 10:36:42 +01:00
l2tp l2tp: fix infoleak in l2tp_ip6_recvmsg() 2019-03-13 14:19:35 -07:00
l3mdev l3mdev: add function to retreive upper master 2018-12-03 14:15:26 -08:00
lapb
llc llc: Check address length before reading address field 2019-04-12 10:25:03 -07:00
mac80211 mac80211: Honor SW_CRYPTO_CONTROL for unicast keys in AP VLAN mode 2019-04-09 13:40:32 +02:00
mac802154
mpls mpls: Fix 6PE forwarding 2019-03-19 16:00:22 -07:00
ncsi net: ncsi: fix a missing check for nla_nest_start 2019-03-16 11:44:33 -07:00
netfilter netfilter: nf_tables: add missing ->release_ops() in error path of newrule() 2019-03-20 08:32:58 +01:00
netlabel netlabel: fix out-of-bounds memory accesses 2019-02-27 21:45:24 -08:00
netlink net: netlink: Check address length before reading groups field 2019-04-12 10:25:03 -07:00
netrom net: netrom: Fix error cleanup path of nr_proto_init 2019-04-11 13:59:49 -07:00
nfc NFC: nci: Add some bounds checking in nci_hci_cmd_received() 2019-04-06 15:05:07 -07:00
nsh
openvswitch openvswitch: fix flow actions reallocation 2019-03-28 17:15:44 -07:00
packet net/packet: Set __GFP_NOWARN upon allocation in alloc_pg_vec 2019-03-20 10:46:50 -07:00
phonet phonet: fix building with clang 2019-02-21 16:23:56 -08:00
psample
qrtr mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
rds net/rds: Check address length before reading address family 2019-04-12 10:25:03 -07:00
rfkill rfkill: gpio: Remove unused include 2018-12-18 13:13:56 +01:00
rose net: rose: fix a possible stack overflow 2019-03-18 16:53:22 -07:00
rxrpc rxrpc: Fix detection of out of order acks 2019-04-12 16:57:23 -07:00
sched sch_cake: Make sure we can write the IP header before changing DSCP bits 2019-04-04 10:55:59 -07:00
sctp sctp: Check address length before reading address family 2019-04-12 10:25:03 -07:00
smc net/smc: move unhash before release of clcsock 2019-04-11 11:04:08 -07:00
strparser net: strparser: partially revert "strparser: Call skb_unclone conditionally" 2019-04-10 13:07:02 -07:00
sunrpc SUNRPC: fix uninitialized variable warning 2019-03-26 13:04:32 -07:00
switchdev switchdev: Remove unused transaction item queue 2019-03-01 21:35:19 -08:00
tipc tipc: missing entries in name table of publications 2019-04-10 22:58:09 -07:00
tls net/tls: fix build without CONFIG_TLS_DEVICE 2019-04-10 17:23:26 -07:00
unix io_uring-2019-03-06 2019-03-08 14:48:40 -08:00
vmw_vsock vsock/virtio: fix kernel panic from virtio_transport_reset_no_sock 2019-03-08 15:15:44 -08:00
wimax
wireless nl80211: Add NL80211_FLAG_CLEAR_SKB flag for other NL commands 2019-03-29 11:23:09 +01:00
x25 net/x25: reset state in x25_connect() 2019-03-11 15:40:14 -07:00
xdp xsk: fix umem memory leak on cleanup 2019-03-16 01:27:51 +01:00
xfrm xfrm: Fix inbound traffic via XFRM interfaces across network namespaces 2019-02-18 10:58:54 +01:00
compat.c Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-03-05 14:08:26 -08:00
Kconfig net: devlink: turn devlink into a built-in 2019-02-26 08:49:05 -08:00
Makefile net: split out functions related to registering inflight socket files 2019-02-28 08:24:23 -07:00
socket.c net: add documentation to socket.c 2019-03-15 15:29:47 -07:00
sysctl_net.c