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11bf284f81
linux/net/core
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Kirill Tkhai 11bf284f81 net: Protect iterations over net::fib_notifier_ops in fib_seq_sum() 
There is at least unlocked deletion of net->ipv4.fib_notifier_ops
from net::fib_notifier_ops:

ip_fib_net_exit()
  rtnl_unlock()
  fib4_notifier_exit()
    fib_notifier_ops_unregister(net->ipv4.notifier_ops)
      list_del_rcu(&ops->list)

So fib_seq_sum() can't use rtnl_lock() only for protection.

The possible solution could be to use rtnl_lock()
in fib_notifier_ops_unregister(), but this adds
a possible delay during net namespace creation,
so we better use rcu_read_lock() till someone
really needs the mutex (if that happens).

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-15 14:01:30 +09:00
..
datagram.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
dev_addr_lists.c
dev_ioctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dev.c net: core: dev_get_valid_name is now the same as dev_alloc_name_ns 2017-11-14 16:38:46 +09:00
devlink.c devlink: Add IPv6 header for dpipe 2017-08-31 14:42:19 -07:00
drop_monitor.c
dst_cache.c
dst.c net: dst: move cpu inside ifdef to avoid compilation warning 2017-10-10 15:55:58 -07:00
ethtool.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-10-22 13:39:14 +01:00
fib_notifier.c net: Protect iterations over net::fib_notifier_ops in fib_seq_sum() 2017-11-15 14:01:30 +09:00
fib_rules.c fib_rules: exit_net cleanup check added 2017-11-14 15:45:53 +09:00
filter.c bpf: remove old offload/analyzer 2017-11-05 22:26:20 +09:00
flow_dissector.c tipc: improve link resiliency when rps is activated 2017-11-11 15:36:05 +09:00
gen_estimator.c net_sched: gen_estimator: fix scaling error in bytes/packets samples 2017-09-13 13:30:53 -07:00
gen_stats.c
gro_cells.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hwbm.c
link_watch.c
lwt_bpf.c bpf: rename bpf_compute_data_end into bpf_compute_data_pointers 2017-09-26 13:36:44 -07:00
lwtunnel.c ipv6: sr: define core operations for seg6local lightweight tunnel 2017-08-07 14:16:22 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
neighbour.c neigh: make strucrt neigh_table::entry_size unsigned int 2017-09-25 20:36:17 -07:00
net_namespace.c net: export peernet2id_alloc 2017-11-05 21:49:17 +09:00
net-procfs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
net-sysfs.c net-sysfs: trigger netlink notification on ifalias change via sysfs 2017-11-14 22:03:21 +09:00
net-sysfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
net-traces.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
netclassid_cgroup.c cgroup: add @flags to css_task_iter_start() and implement CSS_TASK_ITER_PROCS 2017-07-21 11:14:51 -04:00
netevent.c
netpoll.c netpoll: Fix device name check in netpoll_setup() 2017-07-26 17:01:43 -07:00
netprio_cgroup.c
pktgen.c pktgen: document 32-bit timestamp overflow 2017-11-08 15:56:12 +09:00
ptp_classifier.c
request_sock.c
rtnetlink.c rtnetlink: fix missing size for IFLA_IF_NETNSID 2017-11-08 13:46:25 +09:00
scm.c
secure_seq.c
skbuff.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-10 10:00:18 +09:00
sock_diag.c
sock_reuseport.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sock.c tcp: allow drivers to tweak TSQ logic 2017-11-14 16:18:36 +09:00
stream.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sysctl_net_core.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
timestamping.c
tso.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
utils.c