Eric Dumazet 7162fb242c tcp: do not underestimate skb->truesize in tcp_trim_head() ...

Andrey found a way to trigger the WARN_ON_ONCE(delta < len) in
skb_try_coalesce() using syzkaller and a filter attached to a TCP
socket over loopback interface.

I believe one issue with looped skbs is that tcp_trim_head() can end up
producing skb with under estimated truesize.

It hardly matters for normal conditions, since packets sent over
loopback are never truncated.

Bytes trimmed from skb->head should not change skb truesize, since
skb->head is not reallocated.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2017-04-28 16:05:22 -04:00

..

netfilter

netfilter: ipt_CLUSTERIP: Fix wrong conntrack netns refcnt usage

2017-04-13 23:21:40 +02:00

af_inet.c

ipv4: Don't pass IP fragments to upper layer GRO handlers.

2017-04-28 16:00:38 -04:00

ah4.c

IPsec: do not ignore crypto err in ah4 input

2017-01-16 12:57:48 +01:00

arp.c

NET: Fix /proc/net/arp for AX.25

2017-02-13 22:15:03 -05:00

cipso_ipv4.c

netlabel: out of bound access in cipso_v4_validate()

2017-02-04 19:44:22 -05:00

datagram.c

net: Set sk_txhash from a random number

2015-07-29 22:44:04 -07:00

devinet.c

sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>

2017-03-02 08:42:32 +01:00

esp4_offload.c

esp: Add a software GRO codepath

2017-02-15 11:04:11 +01:00

esp4.c

esp: Introduce a helper to setup the trailer

2017-01-17 10:23:08 +01:00

fib_frontend.c

ipv4: provide stronger user input validation in nl_fib_input()

2017-03-22 14:15:49 -07:00

fib_lookup.h

ipv4: consider TOS in fib_select_default

2015-07-24 22:46:11 -07:00

fib_rules.c

switchdev: remove FIB offload infrastructure

2016-09-28 04:48:00 -04:00

fib_semantics.c

ipv4: fib: Notify about nexthop status changes

2017-02-08 15:25:18 -05:00

fib_trie.c

lib/vsprintf.c: remove %Z support

2017-02-27 18:43:47 -08:00

fou.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-10-30 12:42:58 -04:00

gre_demux.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-06-30 05:03:36 -04:00

gre_offload.c

net: add recursion limit to GRO

2016-10-20 14:32:22 -04:00

icmp.c

net: for rate-limited ICMP replies save one atomic operation

2017-01-09 15:49:12 -05:00

igmp.c

igmp, mld: Fix memory leak in igmpv3/mld_del_delrec()

2017-02-09 16:43:45 -05:00

inet_connection_sock.c

net: Work around lockdep limitation in sockets that use sockets

2017-03-09 18:23:27 -08:00

inet_diag.c

tcp: remove early retransmit

2017-01-13 22:37:16 -05:00

inet_fragment.c

net: disable fragment reassembly if high_thresh is zero

2016-06-05 22:56:42 -04:00

inet_hashtables.c

inet: kill smallest_size and smallest_port

2017-01-18 13:04:29 -05:00

inet_timewait_sock.c

ipv4: Namespaceify tcp_tw_recycle and tcp_max_tw_buckets knob

2016-12-29 11:38:31 -05:00

inetpeer.c

net: Add helper function to compare inetpeer addresses

2015-08-28 13:32:36 -07:00

ip_forward.c

ipv4: allow local fragmentation in ip_finish_output_gso()

2016-11-03 16:10:26 -04:00

ip_fragment.c

inet: frag: release spinlock before calling icmp_send()

2017-03-22 15:40:45 -07:00

ip_gre.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

ip_input.c

net: VRF: Pass original iif to ip_route_input()

2016-09-16 04:24:07 -04:00

ip_options.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

ip_output.c

udp: avoid ufo handling on IP payload compression packets

2017-03-09 18:28:42 -08:00

ip_sockglue.c

net-timestamp: avoid use-after-free in ip_recv_error

2017-04-17 12:59:22 -04:00

ip_tunnel_core.c

lwtunnel: remove device arg to lwtunnel_build_state

2017-01-30 15:14:22 -05:00

ip_tunnel.c

netns: make struct pernet_operations::id unsigned int

2016-11-18 10:59:15 -05:00

ip_vti.c

netns: make struct pernet_operations::id unsigned int

2016-11-18 10:59:15 -05:00

ipcomp.c

ipv4: coding style: comparison for equality with NULL

2015-04-03 12:11:15 -04:00

ipconfig.c

net: ipconfig: fix ic_close_devs() use-after-free

2017-03-27 21:06:53 -07:00

ipip.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

ipmr.c

ipv4: fix a deadlock in ip_ra_control

2017-04-17 12:46:50 -04:00

Kconfig

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next

2017-02-16 21:25:49 -05:00

Makefile

esp: Add a software GRO codepath

2017-02-15 11:04:11 +01:00

netfilter.c

netfilter: use skb_to_full_sk in ip_route_me_harder

2017-02-28 12:49:36 +01:00

ping.c

ping: implement proper locking

2017-03-24 20:50:28 -07:00

proc.c

net: add LINUX_MIB_PFMEMALLOCDROP counter

2017-02-02 23:34:19 -05:00

protocol.c

…

raw_diag.c

net: ip, raw_diag -- Use jump for exiting from nested loop

2016-11-03 15:25:26 -04:00

raw.c

ipv4: fix a deadlock in ip_ra_control

2017-04-17 12:46:50 -04:00

route.c

ipv4: Avoid caching l3mdev dst on mismatched local route

2017-04-24 12:50:29 -04:00

syncookies.c

syncookies: use SipHash in place of SHA1

2017-01-09 13:58:57 -05:00

sysctl_net_ipv4.c

net: Avoid receiving packets with an l3mdev on unbound UDP sockets

2017-01-30 15:00:58 -05:00

tcp_bbr.c

tcp_bbr: add a state transition diagram and accompanying comment

2016-10-29 17:12:43 -04:00

tcp_bic.c

tcp: replace cnt & rtt with struct in pkts_acked()

2016-05-11 14:43:19 -04:00

tcp_cdg.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>

2017-03-02 08:42:27 +01:00

tcp_cong.c

tcp: memset ca_priv data to 0 properly

2017-04-26 14:58:32 -04:00

tcp_cubic.c

tcp: replace cnt & rtt with struct in pkts_acked()

2016-05-11 14:43:19 -04:00

tcp_dctcp.c

Revert "dctcp: update cwnd on congestion event"

2016-12-06 11:34:24 -05:00

tcp_diag.c

net: diag: Fix refcnt leak in error path destroying socket

2016-08-23 23:11:36 -07:00

tcp_fastopen.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-01-28 10:33:06 -05:00

tcp_highspeed.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_htcp.c

tcp: replace cnt & rtt with struct in pkts_acked()

2016-05-11 14:43:19 -04:00

tcp_hybla.c

tcp: make undo_cwnd mandatory for congestion modules

2016-11-21 13:20:17 -05:00

tcp_illinois.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_input.c

tcp: restrict F-RTO to work-around broken middle-boxes

2017-04-07 11:44:00 -07:00

tcp_ipv4.c

dccp/tcp: fix routing redirect race

2017-03-13 21:55:47 -07:00

tcp_lp.c

tcp: make undo_cwnd mandatory for congestion modules

2016-11-21 13:20:17 -05:00

tcp_metrics.c

tcp: replace dst_confirm with sk_dst_confirm

2017-02-07 13:07:46 -05:00

tcp_minisocks.c

tcp: initialize icsk_ack.lrcvtime at session start time

2017-03-22 15:39:42 -07:00

tcp_nv.c

tcp: add NV congestion control

2016-06-10 23:07:49 -07:00

tcp_offload.c

gso: Support partial splitting at the frag_list pointer

2016-09-19 20:59:34 -04:00

tcp_output.c

tcp: do not underestimate skb->truesize in tcp_trim_head()

2017-04-28 16:05:22 -04:00

tcp_probe.c

tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"

2017-02-21 13:26:03 -05:00

tcp_rate.c

tcp: export data delivery rate

2016-09-21 00:23:00 -04:00

tcp_recovery.c

tcp: fix lost retransmit SNMP under-counting

2017-04-05 18:41:27 -07:00

tcp_scalable.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_timer.c

tcp: fix various issues for sockets morphing to listen state

2017-03-07 13:58:33 -08:00

tcp_vegas.c

tcp: make undo_cwnd mandatory for congestion modules

2016-11-21 13:20:17 -05:00

tcp_vegas.h

tcp: replace cnt & rtt with struct in pkts_acked()

2016-05-11 14:43:19 -04:00

tcp_veno.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_westwood.c

tcp: make undo_cwnd mandatory for congestion modules

2016-11-21 13:20:17 -05:00

tcp_yeah.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp.c

tcp: clear saved_syn in tcp_disconnect()

2017-04-09 18:27:28 -07:00

tunnel4.c

tunnels: correct conditional build of MPLS and IPv6

2016-07-11 13:27:06 -07:00

udp_diag.c

net: inet: diag: expose the socket mark to privileged processes.

2016-09-08 16:13:09 -07:00

udp_impl.h

udplite: call proper backlog handlers

2016-11-24 15:32:14 -05:00

udp_offload.c

udp: disable inner UDP checksum offloads in IPsec case

2017-04-24 13:48:54 -04:00

udp_tunnel.c

net: Remove deprecated tunnel specific UDP offload functions

2016-06-17 20:23:32 -07:00

udp.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-02-07 16:29:30 -05:00

udplite.c

udplite: call proper backlog handlers

2016-11-24 15:32:14 -05:00

xfrm4_input.c

esp: Add a software GRO codepath

2017-02-15 11:04:11 +01:00

xfrm4_mode_beet.c

…

xfrm4_mode_transport.c

esp: Add a software GRO codepath

2017-02-15 11:04:11 +01:00

xfrm4_mode_tunnel.c

ipv4: hash net ptr into fragmentation bucket selection

2015-03-25 14:07:04 -04:00

xfrm4_output.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2015-10-24 06:54:12 -07:00

xfrm4_policy.c

xfrm: policy: make policy backend const

2017-02-09 10:22:19 +01:00

xfrm4_protocol.c

xfrm: input: constify xfrm_input_afinfo

2017-02-09 10:22:17 +01:00

xfrm4_state.c

xfrm: remove unused function

2017-01-10 10:57:12 +01:00

xfrm4_tunnel.c

…