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linux/net/core
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Tom Herbert 10e4ea7514 net: Fix race condition in store_rps_map 
There is a race condition in store_rps_map that allows jump label
count in rps_needed to go below zero. This can happen when
concurrently attempting to set and a clear map.

Scenario:

1. rps_needed count is zero
2. New map is assigned by setting thread, but rps_needed count _not_ yet
   incremented (rps_needed count still zero)
2. Map is cleared by second thread, old_map set to that just assigned
3. Second thread performs static_key_slow_dec, rps_needed count now goes
   negative

Fix is to increment or decrement rps_needed under the spinlock.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-07 15:56:56 -07:00
..
datagram.c net: Fix skb csum races when peeking 2015-07-15 15:59:58 -07:00
dev_addr_lists.c net: fix spelling for synchronized 2014-11-18 15:26:32 -05:00
dev_ioctl.c dev_ioctl: use sizeof(x) instead of sizeof x 2014-11-18 15:27:32 -05:00
dev.c dev: Spelling fix in comments 2015-07-27 00:54:57 -07:00
drop_monitor.c
dst.c bpf: add helpers to access tunnel metadata 2015-07-31 15:20:22 -07:00
ethtool.c net/ethtool: Add current supported tunable options 2015-06-11 00:36:37 -07:00
fib_rules.c fib: Add fib rule match on tunnel id 2015-07-21 10:39:06 -07:00
filter.c ebpf: add skb->hash to offset map for usage in {cls, act}_bpf or filters 2015-08-02 17:20:47 -07:00
flow_dissector.c net: Add functions to get skb->hash based on flow structures 2015-07-31 17:07:11 -07:00
flow.c flowcache: Fix kernel panic in flow_cache_flush_task 2015-02-05 14:38:53 -08:00
gen_estimator.c net_sched: gen_estimator: extend pps limit 2015-07-08 13:59:20 -07:00
gen_stats.c gen_stats.c: Duplicate xstats buffer for later use 2015-02-19 15:45:53 -05:00
link_watch.c dev: introduce dev_get_iflink() 2015-04-02 14:04:59 -04:00
lwtunnel.c lwtunnel: set skb protocol and dev 2015-08-03 22:26:13 -07:00
Makefile lwtunnel: infrastructure for handling light weight tunnels like mpls 2015-07-21 10:39:03 -07:00
neighbour.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-06-24 02:58:51 -07:00
net_namespace.c netns: make nsid_lock per net 2015-05-17 23:41:11 -04:00
net-procfs.c
net-sysfs.c net: Fix race condition in store_rps_map 2015-08-07 15:56:56 -07:00
net-sysfs.h
net-traces.c
netclassid_cgroup.c cgroup: net_cls: fix false-positive "suspicious RCU usage" 2015-07-25 00:13:18 -07:00
netevent.c netevent: remove automatic variable in register_netevent_notifier() 2015-05-31 00:03:21 -07:00
netpoll.c net: rename vlan_tx_* helpers since "tx" is misleading there 2015-01-13 17:51:08 -05:00
netprio_cgroup.c
pktgen.c net: pktgen: Remove unused 'allocated_skbs' field 2015-07-29 23:00:39 -07:00
ptp_classifier.c
request_sock.c net: convert syn_wait_lock to a spinlock 2015-03-23 16:52:26 -04:00
rtnetlink.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-07-23 00:41:16 -07:00
scm.c net: introduce helper macro for_each_cmsghdr 2014-12-10 22:41:55 -05:00
secure_seq.c net: remove a sparse error in secure_dccpv6_sequence_number() 2015-05-25 22:55:37 -04:00
skbuff.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-06-13 23:56:52 -07:00
sock_diag.c sock_diag: define destruction multicast groups 2015-06-15 19:49:22 -07:00
sock.c net: sk_clone_lock() should only do get_net() if the parent is not a kernel socket 2015-07-30 15:59:12 -07:00
stream.c tcp: set SOCK_NOSPACE under memory pressure 2015-05-09 17:38:36 -04:00
sysctl_net_core.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
timestamping.c net: skb_defer_rx_timestamp should check for phydev before setting up classify 2015-07-09 14:17:15 -07:00
tso.c net: tso: fix unaligned access to crafted TCP header in helper API 2014-10-22 12:52:55 -04:00
utils.c net: fix inet_proto_csum_replace4() sparse errors 2015-05-25 22:56:47 -04:00