Michal Kubeček ba310bc86f ipv6: prevent fib6_run_gc() contention ... commit 2ac3ac8f86 upstream. On a high-traffic router with many processors and many IPv6 dst entries, soft lockup in fib6_run_gc() can occur when number of entries reaches gc_thresh. This happens because fib6_run_gc() uses fib6_gc_lock to allow only one thread to run the garbage collector but ip6_dst_gc() doesn't update net->ipv6.ip6_rt_last_gc until fib6_run_gc() returns. On a system with many entries, this can take some time so that in the meantime, other threads pass the tests in ip6_dst_gc() (ip6_rt_last_gc is still not updated) and wait for the lock. They then have to run the garbage collector one after another which blocks them for quite long. Resolve this by replacing special value ~0UL of expire parameter to fib6_run_gc() by explicit "force" parameter to choose between spin_lock_bh() and spin_trylock_bh() and call fib6_run_gc() with force=false if gc_thresh is reached but not max_size. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2015-07-03 19:48:09 -07:00
..
9p	9p/trans_virtio.c: Fix broken zero-copy on vmalloc() buffers	2014-03-06 21:30:03 -08:00
802	net/802/mrp: fix lockdep splat	2013-05-14 13:02:30 -07:00
8021q	8021q: fix a potential memory leak	2014-07-28 08:00:04 -07:00
appletalk	appletalk: Fix socket referencing in skb	2014-07-28 08:00:05 -07:00
atm	net: rework recvmsg handler msg_name and msg_namelen logic	2013-12-08 07:29:25 -08:00
ax25	net: rework recvmsg handler msg_name and msg_namelen logic	2013-12-08 07:29:25 -08:00
batman-adv	batman-adv: set up network coding packet handlers during module init	2013-11-20 12:27:47 -08:00
bluetooth	Bluetooth: Avoid use of session socket after the session gets freed	2014-09-17 09:04:00 -07:00
bridge	bridge: fix parsing of MLDv2 reports	2015-06-22 16:55:51 -07:00
caif	unix/caif: sk_socket can disappear when state is unlocked	2015-06-22 16:55:51 -07:00
can	can: add missing initialisations in CAN related skbuffs	2015-03-26 15:00:58 +01:00
ceph	libceph: request a new osdmap if lingering request maps to no osd	2015-06-05 23:19:54 -07:00
core	net: sysctl_net_core: check SNDBUF and RCVBUF for min length	2015-03-26 15:00:55 +01:00
dcb	net: Use netlink_ns_capable to verify the permisions of netlink messages	2014-06-26 15:12:37 -04:00
dccp	net:dccp: do not report ICMP redirects to user space	2013-10-13 16:08:30 -07:00
decnet	net: Use netlink_ns_capable to verify the permisions of netlink messages	2014-06-26 15:12:37 -04:00
dns_resolver	dns_resolver: Null-terminate the right string	2014-07-28 08:00:06 -07:00
dsa	dsa: fix freeing of sparse port allocation	2013-03-25 12:23:41 -04:00
ethernet	net: add ETH_P_802_3_MIN	2013-03-28 01:20:42 -04:00
ieee802154	6lowpan: fix lockdep splats	2014-03-06 21:30:02 -08:00
ipv4	xfrm: Increase the garbage collector threshold	2015-07-03 19:48:09 -07:00
ipv6	ipv6: prevent fib6_run_gc() contention	2015-07-03 19:48:09 -07:00
ipx	ipx: fix locking regression in ipx_sendmsg and ipx_recvmsg	2014-12-06 15:05:47 -08:00
irda	net: irda: fix wait_until_sent poll timeout	2015-03-18 13:22:31 +01:00
iucv	af_iucv: wrong mapping of sent and confirmed skbs	2014-06-30 20:09:40 -07:00
key	net: rework recvmsg handler msg_name and msg_namelen logic	2013-12-08 07:29:25 -08:00
l2tp	l2tp: fix race while getting PMTU on PPP pseudo-wire	2014-10-15 08:31:57 +02:00
lapb	net/lapb: remove depends on CONFIG_EXPERIMENTAL	2013-01-11 11:40:01 -08:00
llc	net: llc: use correct size for sysctl timeout entries	2015-04-19 10:10:50 +02:00
mac80211	mac80211: drop unencrypted frames in mesh fwding	2015-04-13 14:02:11 +02:00
mac802154	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-04-30 03:55:20 -04:00
netfilter	netfilter: Zero the tuple in nfnl_cthelper_parse_tuple()	2015-07-03 19:48:08 -07:00
netlabel	netlabel: improve domain mapping validation	2013-05-19 14:49:55 -07:00
netlink	netlink: Don't reorder loads/stores before marking mmap netlink frame as available	2015-01-27 07:52:30 -08:00
netrom	net: rework recvmsg handler msg_name and msg_namelen logic	2013-12-08 07:29:25 -08:00
nfc	net: rework recvmsg handler msg_name and msg_namelen logic	2013-12-08 07:29:25 -08:00
openvswitch	openvswitch: fix panic with multiple vlan headers	2014-10-15 08:31:57 +02:00
packet	packet: handle too big packets for PACKET_V3	2014-10-15 08:31:56 +02:00
phonet	net: Use netlink_ns_capable to verify the permisions of netlink messages	2014-06-26 15:12:37 -04:00
rds	net: rds: use correct size for max unacked packets and bytes	2015-04-19 10:10:50 +02:00
rfkill	Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next	2013-04-22 14:58:14 -04:00
rose	net: rose: restore old recvmsg behavior	2014-01-15 15:28:49 -08:00
rxrpc	rxrpc: bogus MSG_PEEK test in rxrpc_recvmsg()	2015-03-26 15:00:56 +01:00
sched	net_sched: invoke ->attach() after setting dev->qdisc	2015-06-22 16:55:51 -07:00
sctp	net: sctp: fix passing wrong parameter header to param_type2af in sctp_process_param	2015-02-26 17:48:49 -08:00
sunrpc	svcrpc: fix potential GSSX_ACCEPT_SEC_CONTEXT decoding failures	2015-06-05 23:19:59 -07:00
tipc	tipc: clear 'next'-pointer of message fragments before reassembly	2014-07-28 08:00:05 -07:00
unix	unix/caif: sk_socket can disappear when state is unlocked	2015-06-22 16:55:51 -07:00
vmw_vsock	net: rework recvmsg handler msg_name and msg_namelen logic	2013-12-08 07:29:25 -08:00
wimax	net: cleanup unsigned to unsigned int	2012-04-15 12:44:40 -04:00
wireless	cfg80211: wext: clear sinfo struct before calling driver	2015-06-22 16:55:54 -07:00
x25	net: rework recvmsg handler msg_name and msg_namelen logic	2013-12-08 07:29:25 -08:00
xfrm	net: Use netlink_ns_capable to verify the permisions of netlink messages	2014-06-26 15:12:37 -04:00
compat.c	net: compat: Update get_compat_msghdr() to match copy_msghdr_from_user() behaviour	2015-03-26 15:00:56 +01:00
Kconfig	netlink: kconfig: move mmap i/o into netlink kconfig	2013-05-01 15:02:42 -04:00
Makefile	VSOCK: Introduce VM Sockets	2013-02-10 19:41:08 -05:00
nonet.c
socket.c	net: socket: Fix the wrong returns for recvmsg and sendmsg	2015-06-05 23:19:53 -07:00
sysctl_net.c	net: Update the sysctl permissions handler to test effective uid/gid	2013-10-13 16:08:34 -07:00