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  1. 19 Dec, 2017 29 commits
  3. 18 Dec, 2017 10 commits
    • Alexey Khoroshilov's avatar
      net: phy: xgene: disable clk on error paths · ab144360
      Alexey Khoroshilov authored 
      There are several error paths in xgene_mdio_probe(),
where clk is left undisabled. The patch fixes them.

Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: default avatarAlexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ab144360
    • Russell King's avatar
      net: phy: marvell: avoid pause mode on SGMII-to-Copper for 88e151x · 6623c0fb
      Russell King authored 
      Observed on the 88e1512 in SGMII-to-Copper mode, negotiating pause
is unreliable.  While the pause bits can be set in the advertisment
register, they clear shortly after negotiation with a link partner
commences irrespective of the cause of the negotiation.

While these bits may be correctly conveyed to the link partner on the
first negotiation, a subsequent negotiation (eg, due to negotiation
restart by the link partner, or reconnection of the cable) will result
in the link partner seeing these bits as zero, while the kernel
believes that it has advertised pause modes.

This leads to the local kernel evaluating (eg) symmetric pause mode,
while the remote end evaluates that we have no pause mode capability.

Since we can't guarantee the advertisment, disable pause mode support
with this PHY when used in SGMII-to-Copper mode.

The 88e1510 in RGMII-to-Copper mode appears to behave correctly.
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6623c0fb
    • Nikolay Aleksandrov's avatar
      net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks · 84aeb437
      Nikolay Aleksandrov authored 
      The early call to br_stp_change_bridge_id in bridge's newlink can cause
a memory leak if an error occurs during the newlink because the fdb
entries are not cleaned up if a different lladdr was specified, also
another minor issue is that it generates fdb notifications with
ifindex = 0. Another unrelated memory leak is the bridge sysfs entries
which get added on NETDEV_REGISTER event, but are not cleaned up in the
newlink error path. To remove this special case the call to
br_stp_change_bridge_id is done after netdev register and we cleanup the
bridge on changelink error via br_dev_delete to plug all leaks.

This patch makes netlink bridge destruction on newlink error the same as
dellink and ioctl del which is necessary since at that point we have a
fully initialized bridge device.

To reproduce the issue:
$ ip l add br0 address 00:11:22:33:44:55 type bridge group_fwd_mask 1
RTNETLINK answers: Invalid argument

$ rmmod bridge
[ 1822.142525] =============================================================================
[ 1822.143640] BUG bridge_fdb_cache (Tainted: G           O    ): Objects remaining in bridge_fdb_cache on __kmem_cache_shutdown()
[ 1822.144821] -----------------------------------------------------------------------------

[ 1822.145990] Disabling lock debugging due to kernel taint
[ 1822.146732] INFO: Slab 0x0000000092a844b2 objects=32 used=2 fp=0x00000000fef011b0 flags=0x1ffff8000000100
[ 1822.147700] CPU: 2 PID: 13584 Comm: rmmod Tainted: G    B      O     4.15.0-rc2+ #87
[ 1822.148578] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 1822.150008] Call Trace:
[ 1822.150510]  dump_stack+0x78/0xa9
[ 1822.151156]  slab_err+0xb1/0xd3
[ 1822.151834]  ? __kmalloc+0x1bb/0x1ce
[ 1822.152546]  __kmem_cache_shutdown+0x151/0x28b
[ 1822.153395]  shutdown_cache+0x13/0x144
[ 1822.154126]  kmem_cache_destroy+0x1c0/0x1fb
[ 1822.154669]  SyS_delete_module+0x194/0x244
[ 1822.155199]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 1822.155773]  entry_SYSCALL_64_fastpath+0x23/0x9a
[ 1822.156343] RIP: 0033:0x7f929bd38b17
[ 1822.156859] RSP: 002b:00007ffd160e9a98 EFLAGS: 00000202 ORIG_RAX: 00000000000000b0
[ 1822.157728] RAX: ffffffffffffffda RBX: 00005578316ba090 RCX: 00007f929bd38b17
[ 1822.158422] RDX: 00007f929bd9ec60 RSI: 0000000000000800 RDI: 00005578316ba0f0
[ 1822.159114] RBP: 0000000000000003 R08: 00007f929bff5f20 R09: 00007ffd160e8a11
[ 1822.159808] R10: 00007ffd160e9860 R11: 0000000000000202 R12: 00007ffd160e8a80
[ 1822.160513] R13: 0000000000000000 R14: 0000000000000000 R15: 00005578316ba090
[ 1822.161278] INFO: Object 0x000000007645de29 @offset=0
[ 1822.161666] INFO: Object 0x00000000d5df2ab5 @offset=128

Fixes: 30313a3d ("bridge: Handle IFLA_ADDRESS correctly when creating bridge device")
Fixes: 5b8d5429 ("bridge: netlink: register netdevice before executing changelink")
Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      84aeb437
    • Xin Long's avatar
      sctp: add SCTP_CID_RECONF conversion in sctp_cname · d1969759
      Xin Long authored 
      Whenever a new type of chunk is added, the corresp conversion in
sctp_cname should be added. Otherwise, in some places, pr_debug
will print it as "unknown chunk".

Fixes: cc16f00f ("sctp: add support for generating stream reconf ssn reset request chunk")
Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
Acked-by: default avatarMarcelo R. Leitner <marcelo.leitner@gmail.com>
Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d1969759
    • Xin Long's avatar
      sctp: fix the issue that a __u16 variable may overflow in sctp_ulpq_renege · 5c468674
      Xin Long authored 
      Now when reneging events in sctp_ulpq_renege(), the variable freed
could be increased by a __u16 value twice while freed is of __u16
type. It means freed may overflow at the second addition.

This patch is to fix it by using __u32 type for 'freed', while at
it, also to remove 'if (chunk)' check, as all renege commands are
generated in sctp_eat_data and it can't be NULL.
Reported-by: default avatarMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5c468674
    • Hemanth Puranik's avatar
      net: qcom/emac: Change the order of mac up and sgmii open · ac3241d5
      Hemanth Puranik authored 
      This patch fixes the order of mac_up and sgmii_open for the
reasons noted below:

- If open takes more time(if the SGMII block is not responding or
  if we want to do some delay based task) in this situation we
  will hit NETDEV watchdog
- The main reason : We should signal to upper layers that we are
  ready to receive packets "only" when the entire path is initialized
  not the other way around, this is followed in the reset path where
  we do mac_down, sgmii_reset and mac_up. This also makes the driver
  uniform across the reset and open paths.
- In the future there may be need for delay based tasks to be done in
  sgmii open which will result in NETDEV watchdog
- As per the documentation the order of init should be sgmii, mac, rings
  and DMA
Signed-off-by: default avatarHemanth Puranik <hpuranik@codeaurora.org>
Acked-by: default avatarTimur Tabi <timur@codeaurora.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ac3241d5
    • Zhao Qiang's avatar
      net: phy: marvell: Limit 88m1101 autoneg errata to 88E1145 as well. · c505873e
      Zhao Qiang authored 
      88E1145 also need this autoneg errata.

Fixes: f2899788 ("net: phy: marvell: Limit errata to 88m1101")
Signed-off-by: default avatarZhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c505873e
    • Jon Maloy's avatar
      tipc: remove leaving group member from all lists · 3f42f5fe
      Jon Maloy authored 
      A group member going into state LEAVING should never go back to any
other state before it is finally deleted. However, this might happen
if the socket needs to send out a RECLAIM message during this interval.
Since we forget to remove the leaving member from the group's 'active'
or 'pending' list, the member might be selected for reclaiming, change
state to RECLAIMING, and get stuck in this state instead of being
deleted. This might lead to suppression of the expected 'member down'
event to the receiver.

We fix this by removing the member from all lists, except the RB tree,
at the moment it goes into state LEAVING.
Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3f42f5fe
    • Jon Maloy's avatar
      tipc: fix lost member events bug · 23483399
      Jon Maloy authored 
      Group messages are not supposed to be returned to sender when the
destination socket disappears. This is done correctly for regular
traffic messages, by setting the 'dest_droppable' bit in the header.
But we forget to do that in group protocol messages. This has the effect
that such messages may sometimes bounce back to the sender, be perceived
as a legitimate peer message, and wreak general havoc for the rest of
the session. In particular, we have seen that a member in state LEAVING
may go back to state RECLAIMED or REMITTED, hence causing suppression
of an otherwise expected 'member down' event to the user.

We fix this by setting the 'dest_droppable' bit even in group protocol
messages.
Signed-off-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      23483399
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf · b36025b1
      David S. Miller authored 
      Daniel Borkmann says:

====================
pull-request: bpf 2017-12-17

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) Fix a corner case in generic XDP where we have non-linear skbs
   but enough tailroom in the skb to not miss to linearizing there,
   from Song.

2) Fix BPF JIT bugs in s390x and ppc64 to not recache skb data when
   BPF context is not skb, from Daniel.

3) Fix a BPF JIT bug in sparc64 where recaching skb data after helper
   call would use the wrong register for the skb, from Daniel.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b36025b1
  5. 17 Dec, 2017 1 commit
    • Alexey Kodanev's avatar
      vxlan: restore dev->mtu setting based on lower device · f870c1ff
      Alexey Kodanev authored 
      Stefano Brivio says:
    Commit a985343b ("vxlan: refactor verification and
    application of configuration") introduced a change in the
    behaviour of initial MTU setting: earlier, the MTU for a link
    created on top of a given lower device, without an initial MTU
    specification, was set to the MTU of the lower device minus
    headroom as a result of this path in vxlan_dev_configure():

	if (!conf->mtu)
		dev->mtu = lowerdev->mtu -
			   (use_ipv6 ? VXLAN6_HEADROOM : VXLAN_HEADROOM);

    which is now gone. Now, the initial MTU, in absence of a
    configured value, is simply set by ether_setup() to ETH_DATA_LEN
    (1500 bytes).

    This breaks userspace expectations in case the MTU of
    the lower device is higher than 1500 bytes minus headroom.

This patch restores the previous behaviour on newlink operation. Since
max_mtu can be negative and we update dev->mtu directly, also check it
for valid minimum.
Reported-by: default avatarJunhan Yan <juyan@redhat.com>
Fixes: a985343b ("vxlan: refactor verification and application of configuration")
Signed-off-by: default avatarAlexey Kodanev <alexey.kodanev@oracle.com>
Acked-by: default avatarStefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarStefano Brivio <sbrivio@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f870c1ff
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