Jakub Kicinski 106dc9648a net: fix race on decreasing number of TX queues ... [ Upstream commit ac5b70198a ] netif_set_real_num_tx_queues() can be called when netdev is up. That usually happens when user requests change of number of channels/rings with ethtool -L. The procedure for changing the number of queues involves resetting the qdiscs and setting dev->num_tx_queues to the new value. When the new value is lower than the old one, extra care has to be taken to ensure ordering of accesses to the number of queues vs qdisc reset. Currently the queues are reset before new dev->num_tx_queues is assigned, leaving a window of time where packets can be enqueued onto the queues going down, leading to a likely crash in the drivers, since most drivers don't check if TX skbs are assigned to an active queue. Fixes: e6484930d7 ("net: allocate tx queues in register_netdevice") Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-03-11 16:21:31 +01:00
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Makefile	net: add a hardware buffer management helper API	2016-03-14 12:19:46 -04:00
datagram.c	udp: on peeking bad csum, drop packets even if not at head	2017-09-20 08:19:53 +02:00
dev.c	net: fix race on decreasing number of TX queues	2018-03-11 16:21:31 +01:00
dev_addr_lists.c	net: fix spelling for synchronized	2014-11-18 15:26:32 -05:00
dev_ioctl.c	net: Zero terminate ifr_name in dev_ifname().	2017-08-11 08:49:32 -07:00
devlink.c	devlink: add hardware messages tracing facility	2016-07-12 14:20:18 -07:00
drop_monitor.c	drop_monitor: consider inserted data in genlmsg_end	2017-01-15 13:42:54 +01:00
dst.c	Fix an intermittent pr_emerg warning about lo becoming free.	2017-07-05 14:40:14 +02:00
dst_cache.c	net: dst_cache_per_cpu_dst_set() can be static	2016-03-18 17:45:08 -04:00
ethtool.c	ethtool: do not print warning for applications using legacy API	2018-01-17 09:38:53 +01:00
fib_rules.c	fib_rules: Added NLM_F_EXCL support to fib_nl_newrule	2016-06-30 08:23:19 -04:00
filter.c	bpf: fix 32-bit divide by zero	2018-01-31 12:55:57 +01:00
flow.c	flowcache: Increase threshold for refusing new allocations	2016-11-23 06:37:09 +01:00
flow_dissector.c	flow_dissector: properly cap thoff field	2018-01-31 12:55:56 +01:00
gen_estimator.c	net: sched: do not acquire qdisc spinlock in qdisc/class stats dump	2016-06-07 16:37:14 -07:00
gen_stats.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-06-10 11:52:24 -07:00
hwbm.c	net: hwbm: Fix unbalanced spinlock in error case	2016-05-25 12:35:09 -07:00
link_watch.c	dev: introduce dev_get_iflink()	2015-04-02 14:04:59 -04:00
lwtunnel.c	lwtunnel: Fix oops on state free after encap module unload	2017-02-04 09:47:11 +01:00
neighbour.c	net: Allow neigh contructor functions ability to modify the primary_key	2018-01-31 12:55:55 +01:00
net-procfs.c	net: remove NETDEV_TX_LOCKED support	2016-04-26 15:53:05 -04:00
net-sysfs.c	net: introduce NETDEV_CHANGE_TX_QUEUE_LEN	2016-07-01 05:32:17 -04:00
net-sysfs.h	net: netdev_kobject_init: annotate with __init	2014-01-05 20:27:54 -05:00
net-traces.c	net: IPv6 fib lookup tracepoint	2015-11-22 11:54:10 -05:00
net_namespace.c	net: Fix double free and memory corruption in get_net_ns_by_id()	2018-01-02 20:35:13 +01:00
netclassid_cgroup.c	cgroup, net_cls: iterate the fds of only the tasks which are being migrated	2017-03-30 09:41:27 +02:00
netevent.c	netevent: remove automatic variable in register_netevent_notifier()	2015-05-31 00:03:21 -07:00
netpoll.c	netpoll: Check for skb->queue_mapping	2017-05-03 08:36:36 -07:00
netprio_cgroup.c	core: remove unneded headers for net cgroup controllers.	2016-02-17 15:31:27 -05:00
pktgen.c	net: pktgen: remove rcu locking in pktgen_change_name()	2016-10-17 10:52:59 -04:00
ptp_classifier.c	ptp: Change ptp_class to a proper bitmask	2015-11-03 11:08:22 -05:00
request_sock.c	tcp: restore fastopen operations	2015-10-05 03:19:06 -07:00
rtnetlink.c	net: rtnetlink: fix info leak in RTM_GETSTATS call	2017-10-12 11:51:23 +02:00
scm.c	unix: correctly track in-flight fds in sending process user_struct	2016-02-08 10:30:42 -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	sock: free skb in skb_complete_tx_timestamp on error	2018-01-02 20:35:13 +01:00
sock.c	net: call cgroup_sk_alloc() earlier in sk_clone_lock()	2017-11-18 11:22:21 +01:00
sock_diag.c	net: core: fix module type in sock_diag_bind	2018-01-17 09:38:53 +01:00
sock_reuseport.c	soreuseport: fix mem leak in reuseport_add_sock()	2018-02-13 12:35:57 +01:00
stream.c	net: do not export sk_stream_write_space	2016-09-28 20:32:38 -04:00
sysctl_net_core.c	bpf: introduce BPF_JIT_ALWAYS_ON config	2018-01-31 12:55:56 +01:00
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	net: the space is required before the open parenthesis '('	2016-06-29 05:15:14 -04:00