linux-toradex.git/net, branch v4.4.154

net: caif: Add a missing rcu_read_unlock() in caif_flow_cb

2018-09-05T07:18:34+00:00

[ Upstream commit 64119e05f7b31e83e2555f6782e6cdc8f81c63f4 ]

Add a missing rcu_read_unlock in the error path

Fixes: c95567c80352 ("caif: added check for potential null return")
Signed-off-by: YueHaibing 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

nl80211: Add a missing break in parse_station_flags

2018-09-05T07:18:34+00:00

[ Upstream commit 5cf3006cc81d9aa09a10aa781fc065546b12919d ]

I was looking at usually suppressed gcc warnings,
[-Wimplicit-fallthrough=] in this case:

The code definitely looks like a break is missing here.
However I am not able to test the NL80211_IFTYPE_MESH_POINT,
nor do I actually know what might be :)
So please use this patch with caution and only if you are
able to do some testing.

Signed-off-by: Bernd Edlinger 
[johannes: looks obvious enough to apply as is, interesting
 though that it never seems to have been a problem]
Signed-off-by: Johannes Berg 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

mac80211: add stations tied to AP_VLANs during hw reconfig

2018-09-05T07:18:33+00:00

[ Upstream commit 19103a4bfb42f320395daa5616ece3e89e759d63 ]

As part of hw reconfig, only stations linked to AP interfaces are added
back to the driver ignoring those which are tied to AP_VLAN interfaces.

It is true that there could be stations tied to the AP_VLAN interface while
serving 4addr clients or when using AP_VLAN for VLAN operations; we should
be adding these stations back to the driver as part of hw reconfig, failing
to do so can cause functional issues.

In the case of ath10k driver, the following errors were observed.

ath10k_pci : failed to install key for non-existent peer XX:XX:XX:XX:XX:XX
Workqueue: events_freezable ieee80211_restart_work [mac80211]
(unwind_backtrace) from (show_stack+0x10/0x14)
(show_stack) (dump_stack+0x80/0xa0)
(dump_stack) (warn_slowpath_common+0x68/0x8c)
(warn_slowpath_common) (warn_slowpath_null+0x18/0x20)
(warn_slowpath_null) (ieee80211_enable_keys+0x88/0x154 [mac80211])
(ieee80211_enable_keys) (ieee80211_reconfig+0xc90/0x19c8 [mac80211])
(ieee80211_reconfig]) (ieee80211_restart_work+0x8c/0xa0 [mac80211])
(ieee80211_restart_work) (process_one_work+0x284/0x488)
(process_one_work) (worker_thread+0x228/0x360)
(worker_thread) (kthread+0xd8/0xec)
(kthread) (ret_from_fork+0x14/0x24)

Also while bringing down the AP VAP, WARN_ONs and errors related to peer
removal were observed.

ath10k_pci : failed to clear all peer wep keys for vdev 0: -2
ath10k_pci : failed to disassociate station: 8c:fd:f0:0a:8c:f5 vdev 0: -2
(unwind_backtrace) (show_stack+0x10/0x14)
(show_stack) (dump_stack+0x80/0xa0)
(dump_stack) (warn_slowpath_common+0x68/0x8c)
(warn_slowpath_common) (warn_slowpath_null+0x18/0x20)
(warn_slowpath_null) (sta_set_sinfo+0xb98/0xc9c [mac80211])
(sta_set_sinfo [mac80211]) (__sta_info_flush+0xf0/0x134 [mac80211])
(__sta_info_flush [mac80211]) (ieee80211_stop_ap+0xe8/0x390 [mac80211])
(ieee80211_stop_ap [mac80211]) (__cfg80211_stop_ap+0xe0/0x3dc [cfg80211])
(__cfg80211_stop_ap [cfg80211]) (cfg80211_stop_ap+0x30/0x44 [cfg80211])
(cfg80211_stop_ap [cfg80211]) (genl_rcv_msg+0x274/0x30c)
(genl_rcv_msg) (netlink_rcv_skb+0x58/0xac)
(netlink_rcv_skb) (genl_rcv+0x20/0x34)
(genl_rcv) (netlink_unicast+0x11c/0x204)
(netlink_unicast) (netlink_sendmsg+0x30c/0x370)
(netlink_sendmsg) (sock_sendmsg+0x70/0x84)
(sock_sendmsg) (___sys_sendmsg.part.3+0x188/0x228)
(___sys_sendmsg.part.3) (__sys_sendmsg+0x4c/0x70)
(__sys_sendmsg) (ret_fast_syscall+0x0/0x44)

These issues got fixed by adding the stations which are
tied to AP_VLANs back to the driver.

Signed-off-by: Manikanta Pubbisetty 
Signed-off-by: Johannes Berg 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

xfrm: free skb if nlsk pointer is NULL

2018-09-05T07:18:33+00:00

[ Upstream commit 86126b77dcd551ce223e7293bb55854e3df05646 ]

nlmsg_multicast() always frees the skb, so in case we cannot call
it we must do that ourselves.

Fixes: 21ee543edc0dea ("xfrm: fix race between netns cleanup and state expire notification")
Signed-off-by: Florian Westphal 
Signed-off-by: Steffen Klassert 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

xfrm: fix missing dst_release() after policy blocking lbcast and multicast

2018-09-05T07:18:33+00:00

[ Upstream commit 8cc88773855f988d6a3bbf102bbd9dd9c828eb81 ]

Fix missing dst_release() when local broadcast or multicast traffic is
xfrm policy blocked.

For IPv4 this results to dst leak: ip_route_output_flow() allocates
dst_entry via __ip_route_output_key() and passes it to
xfrm_lookup_route(). xfrm_lookup returns ERR_PTR(-EPERM) that is
propagated. The dst that was allocated is never released.

IPv4 local broadcast testcase:
 ping -b 192.168.1.255 &
 sleep 1
 ip xfrm policy add src 0.0.0.0/0 dst 192.168.1.255/32 dir out action block

IPv4 multicast testcase:
 ping 224.0.0.1 &
 sleep 1
 ip xfrm policy add src 0.0.0.0/0 dst 224.0.0.1/32 dir out action block

For IPv6 the missing dst_release() causes trouble e.g. when used in netns:
 ip netns add TEST
 ip netns exec TEST ip link set lo up
 ip link add dummy0 type dummy
 ip link set dev dummy0 netns TEST
 ip netns exec TEST ip addr add fd00::1111 dev dummy0
 ip netns exec TEST ip link set dummy0 up
 ip netns exec TEST ping -6 -c 5 ff02::1%dummy0 &
 sleep 1
 ip netns exec TEST ip xfrm policy add src ::/0 dst ff02::1 dir out action block
 wait
 ip netns del TEST

After netns deletion we see:
[  258.239097] unregister_netdevice: waiting for lo to become free. Usage count = 2
[  268.279061] unregister_netdevice: waiting for lo to become free. Usage count = 2
[  278.367018] unregister_netdevice: waiting for lo to become free. Usage count = 2
[  288.375259] unregister_netdevice: waiting for lo to become free. Usage count = 2

Fixes: ac37e2515c1a ("xfrm: release dst_orig in case of error in xfrm_lookup()")
Signed-off-by: Tommi Rantala 
Signed-off-by: Steffen Klassert 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

vti6: fix PMTU caching and reporting on xmit

2018-09-05T07:18:33+00:00

[ Upstream commit d6990976af7c5d8f55903bfb4289b6fb030bf754 ]

When setting the skb->dst before doing the MTU check, the route PMTU
caching and reporting is done on the new dst which is about to be
released.

Instead, PMTU handling should be done using the original dst.

This is aligned with IPv4 VTI.

Fixes: ccd740cbc6 ("vti6: Add pmtu handling to vti6_xmit.")
Signed-off-by: Eyal Birger 
Signed-off-by: Steffen Klassert 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

Cipso: cipso_v4_optptr enter infinite loop

2018-09-05T07:18:33+00:00

commit 40413955ee265a5e42f710940ec78f5450d49149 upstream.

in for(),if((optlen > 0) && (optptr[1] == 0)), enter infinite loop.

Test: receive a packet which the ip length > 20 and the first byte of ip option is 0, produce this issue

Signed-off-by: yujuan.qi 
Acked-by: Paul Moore 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

bridge: Propagate vlan add failure to user

2018-08-24T11:27:01+00:00

commit 08474cc1e6ea71237cab7e4a651a623c9dea1084 upstream.

Disallow adding interfaces to a bridge when vlan filtering operation
failed. Send the failure code to the user.

Signed-off-by: Elad Raz 
Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller 
Signed-off-by: SZ Lin (林上智) 
Signed-off-by: Greg Kroah-Hartman

packet: refine ring v3 block size test to hold one frame

2018-08-24T11:27:01+00:00

commit 4576cd469d980317c4edd9173f8b694aa71ea3a3 upstream.

TPACKET_V3 stores variable length frames in fixed length blocks.
Blocks must be able to store a block header, optional private space
and at least one minimum sized frame.

Frames, even for a zero snaplen packet, store metadata headers and
optional reserved space.

In the block size bounds check, ensure that the frame of the
chosen configuration fits. This includes sockaddr_ll and optional
tp_reserve.

Syzbot was able to construct a ring with insuffient room for the
sockaddr_ll in the header of a zero-length frame, triggering an
out-of-bounds write in dev_parse_header.

Convert the comparison to less than, as zero is a valid snap len.
This matches the test for minimum tp_frame_size immediately below.

Fixes: f6fb8f100b80 ("af-packet: TPACKET_V3 flexible buffer implementation.")
Fixes: eb73190f4fbe ("net/packet: refine check for priv area size")
Reported-by: syzbot 
Signed-off-by: Willem de Bruijn 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

netfilter: conntrack: dccp: treat SYNC/SYNCACK as invalid if no prior state

2018-08-24T11:27:01+00:00

commit 6613b6173dee098997229caf1f3b961c49da75e6 upstream.

When first DCCP packet is SYNC or SYNCACK, we insert a new conntrack
that has an un-initialized timeout value, i.e. such entry could be
reaped at any time.

Mark them as INVALID and only ignore SYNC/SYNCACK when connection had
an old state.

Reported-by: syzbot+6f18401420df260e37ed@syzkaller.appspotmail.com
Signed-off-by: Florian Westphal 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Greg Kroah-Hartman