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Hannes Frederic Sowa 1280938465 inet: limit length of fragment queue hash table bucket lists 
[ Upstream commit 5a3da1fe9561828d0ca7eca664b16ec2b9bf0055 ]

This patch introduces a constant limit of the fragment queue hash
table bucket list lengths. Currently the limit 128 is choosen somewhat
arbitrary and just ensures that we can fill up the fragment cache with
empty packets up to the default ip_frag_high_thresh limits. It should
just protect from list iteration eating considerable amounts of cpu.

If we reach the maximum length in one hash bucket a warning is printed.
This is implemented on the caller side of inet_frag_find to distinguish
between the different users of inet_fragment.c.

I dropped the out of memory warning in the ipv4 fragment lookup path,
because we already get a warning by the slab allocator.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jesper Dangaard Brouer <jbrouer@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2013-03-28 12:11:54 -07:00
..
9p 9p: BUG before corrupting memory 2012-06-22 11:37:15 -07:00
802 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-02 17:53:39 -07:00
8021q vlan: don't deliver frames for unknown vlans to protocols 2012-10-28 10:14:15 -07:00
appletalk
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atm atm: fix info leak via getsockname() 2012-10-02 10:29:36 -07:00
ax25 net ax25: Reorder ax25_exit to remove races. 2012-04-19 15:37:48 -04:00
batman-adv batman-adv: fix random jitter calculation 2013-01-11 09:07:03 -08:00
bluetooth Bluetooth: Fix handling of unexpected SMP PDUs 2013-02-14 10:48:53 -08:00
bridge bridge: set priority of STP packets 2013-02-28 06:59:05 -08:00
caif caif: Fix access to freed pernet memory 2012-08-09 08:31:42 -07:00
can can: bcm: initialize ifindex for timeouts without previous frame reception 2012-12-03 11:47:10 -08:00
ceph rbd: remove linger unconditionally 2013-01-17 08:51:20 -08:00
core rtnetlink: Mask the rta_type when range checking 2013-03-28 12:11:53 -07:00
dcb dcbnl: fix various netlink info leaks 2013-03-20 13:05:02 -07:00
dccp inet: Fix kmemleak in tcp_v4/6_syn_recv_sock and dccp_v4/6_request_recv_sock 2013-01-11 09:07:14 -08:00
decnet Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
dns_resolver
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dsa
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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 6lowpan: Fix endianness issue in is_addr_link_local(). 2013-03-20 13:05:02 -07:00
ipv4 inet: limit length of fragment queue hash table bucket lists 2013-03-28 12:11:54 -07:00
ipv6 inet: limit length of fragment queue hash table bucket lists 2013-03-28 12:11:54 -07:00
ipx
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irda Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
iucv net: remove skb_orphan_try() 2012-07-16 09:03:48 -07:00
key net/key/af_key.c: add missing kfree_skb 2012-04-13 11:01:44 -04:00
l2tp l2tp: Restore socket refcount when sendmsg succeeds 2013-03-20 13:05:01 -07:00
lapb Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
llc llc: fix info leak via getsockname() 2012-10-02 10:29:37 -07:00
mac80211 mac80211: synchronize scan off/on-channel and PS states 2013-02-03 18:24:42 -06:00
netfilter netfilter: Mark SYN/ACK packets as invalid from original direction 2012-11-26 11:37:48 -08:00
netlabel netlabel: correctly list all the static label mappings 2013-03-20 13:05:01 -07:00
netlink netlink: use kfree_rcu() in netlink_release() 2012-11-17 13:16:14 -08:00
netrom netrom: copy_datagram_iovec can fail 2012-10-13 05:38:45 +09:00
nfc NFC: Fix nfc_llcp_local chained list insertion 2012-12-03 11:47:12 -08:00
openvswitch openvswitch: Reset upper layer protocol info on internal devices. 2012-10-02 10:29:50 -07:00
packet packet: fix leakage of tx_ring memory 2013-02-14 10:49:05 -08:00
phonet phonet: Sort out initiailziation and cleanup code. 2012-04-13 11:01:43 -04:00
rds rds: limit the size allocated by rds_message_alloc() 2013-03-20 13:05:01 -07:00
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: integer overflow fix 2013-01-11 09:07:14 -08:00
sctp sctp: don't break the loop while meeting the active_path so as to find the matched transport 2013-03-28 12:11:53 -07:00
sunrpc SUNRPC: Don't start the retransmission timer when out of socket space 2013-03-14 11:29:42 -07:00
tipc tipc: Optimize setting of immutable payload message header fields 2012-02-29 11:45:35 -05:00
unix af_netlink: force credentials passing [CVE-2012-3520] 2012-10-02 10:29:37 -07:00
wanrouter wanmain: comparing array with NULL 2012-08-09 08:31:51 -07:00
wimax
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wireless wireless: allow 40 MHz on world roaming channels 12/13 2012-11-26 11:37:46 -08:00
x25
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xfrm xfrm_user: ensure user supplied esn replay window is valid 2012-10-13 05:38:41 +09:00
Kconfig
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Makefile
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compat.c net: Fix references to out-of-scope variables in put_cmsg_compat() 2012-08-09 08:31:42 -07:00
nonet.c
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socket.c net: fix info leak in compat dev_ifconf() 2012-10-02 10:29:37 -07:00
sysctl_net.c
…