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13baa00ad0
linux/net/core
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Eric Dumazet 13baa00ad0 net: net_enable_timestamp() can be called from irq contexts 
It is now very clear that silly TCP listeners might play with
enabling/disabling timestamping while new children are added
to their accept queue.

Meaning net_enable_timestamp() can be called from BH context
while current state of the static key is not enabled.

Lets play safe and allow all contexts.

The work queue is scheduled only under the problematic cases,
which are the static key enable/disable transition, to not slow down
critical paths.

This extends and improves what we did in commit 5fa8bbda38 ("net: use
a work queue to defer net_disable_timestamp() work")

Fixes: b90e5794c5 ("net: dont call jump_label_dec from irq context")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-01 20:55:57 -08:00
..
datagram.c udp: properly cope with csum errors 2017-02-07 11:19:00 -05:00
dev_addr_lists.c
dev_ioctl.c
dev.c net: net_enable_timestamp() can be called from irq contexts 2017-03-01 20:55:57 -08:00
devlink.c devlink: allow to fillup eswitch attrs even if mode_get op does not exist 2017-02-10 14:43:00 -05:00
drop_monitor.c drop_monitor: consider inserted data in genlmsg_end 2017-01-03 11:09:44 -05:00
dst_cache.c net: dst_cache_per_cpu_dst_set() can be static 2016-03-18 17:45:08 -04:00
dst.c net: pending_confirm is not used anymore 2017-02-07 13:07:47 -05:00
ethtool.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-02-07 16:29:30 -05:00
fib_rules.c net: core: add missing check for uid_range in rule_exists. 2016-11-09 13:28:10 -05:00
filter.c bpf: Fix bpf_xdp_event_output 2017-02-23 13:53:42 -05:00
flow_dissector.c flow dissector: check if arp_eth is null rather than arp 2017-01-16 13:48:48 -05:00
flow.c Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-12-12 19:25:04 -08:00
gen_estimator.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
gen_stats.c net_sched: gen_estimator: complete rewrite of rate estimators 2016-12-05 15:21:59 -05:00
gro_cells.c gro_cells: move to net/core/gro_cells.c 2017-02-08 14:38:18 -05:00
hwbm.c net: hwbm: Fix unbalanced spinlock in error case 2016-05-25 12:35:09 -07:00
link_watch.c
lwt_bpf.c lwtunnel: remove device arg to lwtunnel_build_state 2017-01-30 15:14:22 -05:00
lwtunnel.c lwtunnel: remove device arg to lwtunnel_build_state 2017-01-30 15:14:22 -05:00
Makefile gro_cells: move to net/core/gro_cells.c 2017-02-08 14:38:18 -05:00
neighbour.c net: neigh: Fix netevent NETEVENT_DELAY_PROBE_TIME_UPDATE notification 2017-02-15 12:38:43 -05:00
net_namespace.c Merge branch 'stable-4.10' of git://git.infradead.org/users/pcmoore/audit 2016-12-14 14:06:40 -08:00
net-procfs.c net: remove NETDEV_TX_LOCKED support 2016-04-26 15:53:05 -04:00
net-sysfs.c net: Add support for XPS with QoS via traffic classes 2016-10-31 15:00:48 -04:00
net-sysfs.h
net-traces.c net: IPv6 fib lookup tracepoint 2015-11-22 11:54:10 -05:00
netclassid_cgroup.c core: remove unneded headers for net cgroup controllers. 2016-02-17 15:31:27 -05:00
netevent.c
netpoll.c netpoll: more efficient locking 2016-11-16 18:32:02 -05:00
netprio_cgroup.c net: cgroups: fix build errors when linux/phy*.h is removed from net/dsa.h 2017-02-10 13:51:01 -05:00
pktgen.c net-tc: convert tc_verd to integer bitfields 2017-01-08 20:58:52 -05:00
ptp_classifier.c ptp: Change ptp_class to a proper bitmask 2015-11-03 11:08:22 -05:00
request_sock.c ipv4: Namespaceify tcp_max_syn_backlog knob 2016-12-29 11:38:31 -05:00
rtnetlink.c rtnl: simplify error return path in rtnl_create_link() 2017-02-21 12:17:43 -05:00
scm.c scm: remove use CMSG{_COMPAT}_ALIGN(sizeof(struct {compat_}cmsghdr)) 2017-01-04 13:04:37 -05:00
secure_seq.c secure_seq: fix sparse errors 2017-01-12 15:57:10 -05:00
skbuff.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2017-02-03 16:58:20 -05:00
sock_diag.c sock_diag: align nlattr properly when needed 2016-04-26 12:00:48 -04:00
sock_reuseport.c soreuseport: do not export reuseport_add_sock() 2016-10-18 14:18:23 -04:00
sock.c net: sock: Use USEC_PER_SEC macro instead of literal 1000000 2017-02-21 12:25:21 -05:00
stream.c net: fix sleeping for sk_wait_event() 2016-11-14 13:17:21 -05:00
sysctl_net_core.c bpf: make jited programs visible in traces 2017-02-17 13:40:05 -05:00
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: add support for IPv6 2015-10-26 22:24:22 -07:00
utils.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00