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0a744d9274
linux/drivers/net
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Michal Kazior 0a744d9274 ath10k: prevent sta pointer rcu violation 
Station pointers are RCU protected so driver must
be extra careful if it tries to store them
internally for later use outside of the RCU
section it obtained it in.

It was possible for station teardown to race with
some htt events. The possible outcome could be a
use-after-free and a crash.

Only peer-flow-control capable firmware was
affected (so hardware-wise qca99x0 and qca4019).

This could be done in sta_state() itself via
explicit synchronize_net() call but there's
already a convenient sta_pre_rcu_remove() op that
can be hooked up to avoid extra rcu stall.

The peer->sta pointer itself can't be set to
NULL/ERR_PTR because it is later used in
sta_state() for extra sanity checks.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2017-01-19 15:17:58 +02:00
..
appletalk Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
arcnet
bonding net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
caif
can ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
cris
dsa net: dsa: Make dsa_switch_ops const 2017-01-09 15:44:50 -05:00
ethernet liquidio: store the L4 hash of rx packets in skb 2017-01-10 14:22:34 -05:00
fddi fddi: skfp: Use more common logging styles 2016-12-29 11:37:14 -05:00
fjes net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
hamradio Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
hippi Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
hyperv net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
ieee802154 ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
ipvlan ipvlan: improvise dev_id generation logic in IPvlan 2017-01-10 20:47:12 -05:00
irda Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-09 15:39:11 -05:00
plip
ppp net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
slip net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
team net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
usb net: usb: asix_devices: add .reset_resume for USB PM 2017-01-04 13:03:08 -05:00
vmxnet3 net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
wan net: wan: slic_ds26522: fix spelling mistake: "configurated" -> "configured" 2016-12-28 15:12:20 -05:00
wimax
wireless ath10k: prevent sta pointer rcu violation 2017-01-19 15:17:58 +02:00
xen-netback xen: features and fixes for 4.10 rc0 2016-12-13 16:07:55 -08:00
dummy.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
eql.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
geneve.c geneve: avoid use-after-free of skb->data 2016-12-02 14:07:11 -05:00
gtp.c gtp: Fix initialization of Flags octet in GTPv1 header 2016-12-17 12:00:25 -05:00
ifb.c net-tc: convert tc_from to tc_from_ingress and tc_redirected 2017-01-08 20:58:52 -05:00
Kconfig
LICENSE.SRC
loopback.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
macsec.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
macvlan.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
macvtap.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-12-16 10:24:44 -08:00
Makefile
mdio.c net: mdio: add mdio45_ethtool_ksettings_get 2017-01-02 16:59:10 -05:00
mii.c net: mii: report 0 for unknown lp_advertising 2016-11-09 20:26:58 -05:00
netconsole.c
nlmon.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
ntb_netdev.c
rionet.c
sb1000.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
Space.c
sungem_phy.c
tun.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
veth.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
virtio_net.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
vrf.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
vxlan.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-03 12:29:53 -05:00
xen-netfront.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00