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Eric Dumazet 521f1cf1db inet_diag: fix access to tcp cc information 
Two different problems are fixed here :

1) inet_sk_diag_fill() might be called without socket lock held.
   icsk->icsk_ca_ops can change under us and module be unloaded.
   -> Access to freed memory.
   Fix this using rcu_read_lock() to prevent module unload.

2) Some TCP Congestion Control modules provide information
   but again this is not safe against icsk->icsk_ca_ops
   change and nla_put() errors were ignored. Some sockets
   could not get the additional info if skb was almost full.

Fix this by returning a status from get_info() handlers and
using rcu protection as well.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2015-04-17 13:28:31 -04:00
..
netfilter netfilter: nf_tables: switch registers to 32 bit addressing 2015-04-13 17:17:29 +02:00
Kconfig
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Makefile
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af_inet.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
ah4.c
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arp.c netfilter: Pass socket pointer down through okfn(). 2015-04-07 15:25:55 -04:00
cipso_ipv4.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
datagram.c
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devinet.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
esp4.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
fib_frontend.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-06 22:34:15 -04:00
fib_lookup.h ipv4: FIB Local/MAIN table collapse 2015-03-11 16:22:14 -04:00
fib_rules.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
fib_semantics.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
fib_trie.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
fou.c fou: avoid missing unlock in failure path 2015-04-16 12:11:19 -04:00
geneve.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-14 15:44:14 -04:00
gre_demux.c
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gre_offload.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
icmp.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
igmp.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
inet_connection_sock.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
inet_diag.c inet_diag: fix access to tcp cc information 2015-04-17 13:28:31 -04:00
inet_fragment.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
inet_hashtables.c tcp/dccp: get rid of central timewait timer 2015-04-13 16:40:05 -04:00
inet_lro.c
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inet_timewait_sock.c tcp/dccp: get rid of central timewait timer 2015-04-13 16:40:05 -04:00
inetpeer.c
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ip_forward.c netfilter: Pass socket pointer down through okfn(). 2015-04-07 15:25:55 -04:00
ip_fragment.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
ip_gre.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
ip_input.c netfilter: Pass socket pointer down through okfn(). 2015-04-07 15:25:55 -04:00
ip_options.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
ip_output.c net: remove extra newlines 2015-04-07 22:24:37 -04:00
ip_sockglue.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
ip_tunnel.c udp_tunnel: Pass UDP socket down through udp_tunnel{, 6}_xmit_skb(). 2015-04-07 15:29:08 -04:00
ip_tunnel_core.c ipv4: ip_tunnel: use net namespace from rtable not socket 2015-04-08 12:09:42 -04:00
ip_vti.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
ipcomp.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
ipconfig.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
ipip.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
ipmr.c netfilter: Pass socket pointer down through okfn(). 2015-04-07 15:25:55 -04:00
netfilter.c netfilter: Use nf_hook_state in nf_queue_entry. 2015-04-04 12:25:22 -04:00
ping.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
proc.c tcp/dccp: get rid of central timewait timer 2015-04-13 16:40:05 -04:00
protocol.c
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raw.c Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-13 18:18:05 -04:00
route.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
syncookies.c tcp: fix ipv4 mapped request socks 2015-03-25 00:57:48 -04:00
sysctl_net_ipv4.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
tcp.c tcp: tcp_get_info() should fetch socket fields once 2015-04-17 13:28:31 -04:00
tcp_bic.c tcp: stretch ACK fixes prep 2015-01-28 22:18:37 -08:00
tcp_cong.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
tcp_cubic.c tcp: restore 1.5x per RTT limit to CUBIC cwnd growth in congestion avoidance 2015-03-11 16:51:51 -04:00
tcp_dctcp.c inet_diag: fix access to tcp cc information 2015-04-17 13:28:31 -04:00
tcp_diag.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
tcp_fastopen.c tcp: RFC7413 option support for Fast Open server 2015-04-07 18:36:39 -04:00
tcp_highspeed.c
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tcp_htcp.c
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tcp_hybla.c
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tcp_illinois.c inet_diag: fix access to tcp cc information 2015-04-17 13:28:31 -04:00
tcp_input.c tcp: fix bogus RTT for CC when retransmissions are acked 2015-04-13 13:54:25 -04:00
tcp_ipv4.c tcp/dccp: get rid of central timewait timer 2015-04-13 16:40:05 -04:00
tcp_lp.c
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tcp_memcontrol.c memcg: cleanup static keys decrement 2015-02-12 18:54:10 -08:00
tcp_metrics.c tcp: RFC7413 option support for Fast Open client 2015-04-07 18:36:39 -04:00
tcp_minisocks.c tcp/dccp: get rid of central timewait timer 2015-04-13 16:40:05 -04:00
tcp_offload.c tcp: cleanup static functions 2015-02-28 16:56:51 -05:00
tcp_output.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-14 15:44:14 -04:00
tcp_probe.c
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tcp_scalable.c tcp: stretch ACK fixes prep 2015-01-28 22:18:37 -08:00
tcp_timer.c tcp: RFC7413 option support for Fast Open client 2015-04-07 18:36:39 -04:00
tcp_vegas.c inet_diag: fix access to tcp cc information 2015-04-17 13:28:31 -04:00
tcp_vegas.h inet_diag: fix access to tcp cc information 2015-04-17 13:28:31 -04:00
tcp_veno.c tcp: stretch ACK fixes prep 2015-01-28 22:18:37 -08:00
tcp_westwood.c inet_diag: fix access to tcp cc information 2015-04-17 13:28:31 -04:00
tcp_yeah.c tcp: stretch ACK fixes prep 2015-01-28 22:18:37 -08:00
tunnel4.c
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udp.c net: remove extra newlines 2015-04-07 22:24:37 -04:00
udp_diag.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
udp_impl.h net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
udp_offload.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
udp_tunnel.c udp_tunnel: Pass UDP socket down through udp_tunnel{, 6}_xmit_skb(). 2015-04-07 15:29:08 -04:00
udplite.c
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xfrm4_input.c netfilter: Pass socket pointer down through okfn(). 2015-04-07 15:25:55 -04:00
xfrm4_mode_beet.c
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xfrm4_mode_transport.c
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xfrm4_mode_tunnel.c ipv4: hash net ptr into fragmentation bucket selection 2015-03-25 14:07:04 -04:00
xfrm4_output.c netfilter: Pass socket pointer down through okfn(). 2015-04-07 15:25:55 -04:00
xfrm4_policy.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
xfrm4_protocol.c
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xfrm4_state.c
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xfrm4_tunnel.c
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