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linux-stable/net
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Eric Dumazet 22b4a4f22d tcp: fix retransmit of partially acked frames 
Alexander Beregalov reported skb_over_panic errors and provided stack
trace.

I occurs commit a21d45726a (tcp: avoid order-1 allocations on wifi and
tx path) added a regression, when a retransmit is done after a partial
ACK.

tcp_retransmit_skb() tries to aggregate several frames if the first one
has enough available room to hold the following ones payload. This is
controlled by /proc/sys/net/ipv4/tcp_retrans_collapse tunable (default :
enabled)

Problem is we must make sure _pskb_trim_head() doesnt fool
skb_availroom() when pulling some bytes from skb (this pull is done when
receiver ACK part of the frame).

Reported-by: Alexander Beregalov <a.beregalov@gmail.com>
Cc: Marc MERLIN <marc@merlins.org>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-18 16:52:45 -04:00
..
9p net/9p: handle flushed Tclunk/Tremove 2012-02-26 14:49:57 -06:00
802 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-02 17:53:39 -07:00
8021q vlan: static functions 2011-12-14 02:39:30 -05:00
appletalk
atm Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ax25 Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
batman-adv Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge 2012-03-11 15:36:34 -07:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2012-04-09 15:47:49 -04:00
bridge bridge: Do not send queries on multicast group leaves 2012-04-11 09:43:13 -04:00
caif caif: Fix memory leakage in the chnl_net.c. 2012-04-13 11:01:44 -04:00
can
ceph libceph: isolate kmap() call in write_partial_msg_pages() 2012-03-22 10:47:52 -05:00
core netns: do not leak net_generic data on failed init 2012-04-18 00:05:33 -04:00
dcb
dccp dccp: fix bug in sequence number validation during connection setup 2012-03-03 09:02:52 -07:00
decnet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
dns_resolver KEYS: Allow special keyrings to be cleared 2012-01-19 14:38:51 +11:00
dsa
econet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ethernet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ieee802154 net/ieee802154/6lowpan.c: reuse eth_mac_addr() 2012-02-22 14:46:37 -05:00
ipv4 tcp: fix retransmit of partially acked frames 2012-04-18 16:52:45 -04:00
ipv6 ipv6: fix problem with expired dst cache 2012-04-13 12:58:29 -04:00
ipx
irda Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
iucv Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2012-03-22 18:15:32 -07:00
key net/key/af_key.c: add missing kfree_skb 2012-04-13 11:01:44 -04:00
l2tp l2tp: don't overwrite source address in l2tp_ip_bind() 2012-04-13 11:01:44 -04:00
lapb Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
llc llc: Fix race condition in llc_ui_recvmsg 2012-01-24 15:33:19 -05:00
mac80211 mac80211: fix logic error in ibss channel type check 2012-04-17 14:17:04 -04:00
netfilter netfilter: nf_conntrack: fix incorrect logic in nf_conntrack_init_net 2012-04-10 13:00:38 +02:00
netlabel netlabel: use GFP flags from caller instead of GFP_ATOMIC 2012-03-22 19:29:57 -04:00
netlink netlink: fix races after skb queueing 2012-04-06 04:21:06 -04:00
netrom Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
nfc NFC: Fix the LLCP Tx fragmentation loop 2012-04-11 15:09:33 -04:00
openvswitch Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
packet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
phonet phonet: Sort out initiailziation and cleanup code. 2012-04-13 11:01:43 -04:00
rds RDS: use gfp flags from caller in conn_alloc() 2012-03-22 19:29:58 -04:00
rfkill device.h: cleanup users outside of linux/include (C files) 2012-03-11 14:27:37 -04:00
rose Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-02 17:53:39 -07:00
rxrpc RxRPC: Fix kcalloc parameters swapped 2012-02-14 14:41:55 -05:00
sched net_sched: gred: Fix oops in gred_dump() in WRED mode 2012-04-16 23:51:07 -04:00
sctp sctp: Allow struct sctp_event_subscribe to grow without breaking binaries 2012-04-04 18:05:02 -04:00
sunrpc Merge branch 'for-3.4' of git://linux-nfs.org/~bfields/linux 2012-03-29 14:53:25 -07:00
tipc tipc: Optimize setting of immutable payload message header fields 2012-02-29 11:45:35 -05:00
unix poll: add poll_requested_events() and poll_does_not_wait() functions 2012-03-23 16:58:38 -07:00
wanrouter
wimax
wireless cfg80211: fix interface combinations check. 2012-04-13 14:05:35 -04:00
x25 net:x25: use IS_ENABLED 2011-12-16 15:49:52 -05:00
xfrm xfrm: Access the replay notify functions via the registered callbacks 2012-03-22 19:29:58 -04:00
compat.c Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-03-29 18:12:23 -07:00
Kconfig
Makefile
nonet.c
socket.c tcp: tcp_sendpages() should call tcp_push() once 2012-04-05 19:04:27 -04:00
sysctl_net.c sysctl: Modify __register_sysctl_paths to take a set instead of a root and an nsproxy 2012-01-24 16:40:30 -08:00