GitHub/LineageOS/G12/android_kernel_amlogic_linux-4.9.git
10 years agotipc: use pseudo message to wake up sockets after link congestion
Jon Paul Maloy [Fri, 22 Aug 2014 22:09:07 +0000 (18:09 -0400)]
tipc: use pseudo message to wake up sockets after link congestion

The current link implementation keeps a linked list of blocked ports/
sockets that is populated when there is link congestion. The purpose
of this is to let the link know which users to wake up when the
congestion abates.

This adds unnecessary complexity to the data structure and the code,
since it forces us to involve the link each time we want to delete
a socket. It also forces us to grab the spinlock port_lock within
the scope of node_lock. We want to get rid of this direct dependence,
as well as the deadlock hazard resulting from the usage of port_lock.

In this commit, we instead let the link keep list of a "wakeup" pseudo
messages for use in such situations. Those messages are sent to the
pending sockets via the ordinary message reception path, and wake up
the socket's owner when they are received.

This enables us to get rid of the 'waiting_ports' linked lists in struct
tipc_port that manifest this direct reference. As a consequence, we can
eliminate another BH entry into the socket, and hence the need to grab
port_lock. This is a further step in our effort to remove port_lock
altogether.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: introduce new function tipc_msg_create()
Jon Paul Maloy [Fri, 22 Aug 2014 22:09:06 +0000 (18:09 -0400)]
tipc: introduce new function tipc_msg_create()

The function tipc_msg_init() has turned out to be of limited value
in many cases. It take too few parameters to be usable for creating
a complete message, it makes too many assumptions about what the
message should be used for, and it does not allocate any buffer to
be returned to the caller.

Therefore, we now introduce the new function tipc_msg_create(), which
takes all the parameters needed to create a full message, and returns
a buffer of the requested size. The new function will be very useful
for the changes we will be doing in later commits in this series.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Sat, 23 Aug 2014 18:12:08 +0000 (11:12 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pulling to get some TIPC fixes that a net-next series depends
upon.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotcp: improve undo on timeout
Yuchung Cheng [Fri, 22 Aug 2014 21:15:22 +0000 (14:15 -0700)]
tcp: improve undo on timeout

Upon timeout, undo (via both timestamps/Eifel and DSACKs) was
disabled if any retransmits were still in flight.  The concern was
perhaps that spurious retransmission sent in a previous recovery
episode may trigger DSACKs to falsely undo the current recovery.

However, this inadvertently misses undo opportunities (using either
TCP timestamps or DSACKs) when timeout occurs during a loss episode,
i.e.  recurring timeouts or timeout during fast recovery. In these
cases some retransmissions will be in flight but we should allow
undo. Furthermore, we should only reset undo_marker and undo_retrans
upon timeout if we are starting a new recovery episode. Finally,
when we do reset our undo state, we now do so in a manner similar
to tcp_enter_recovery(), so that we require a DSACK for each of
the outstsanding retransmissions. This will achieve the original
goal by requiring that we receive the same number of DSACKs as
retransmissions.

This patch increases the undo events by 50% on Google servers.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agophylib: use MDIO_DEVS[12]
Sergei Shtylyov [Fri, 22 Aug 2014 19:56:47 +0000 (23:56 +0400)]
phylib: use MDIO_DEVS[12]

The bare register numbers are used despite <uapi/linux/mdio.h> has MDIO_DEVS[12]
#define'd for those.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: remove dead code after sk_data_ready change
Eric Dumazet [Sat, 23 Aug 2014 03:30:12 +0000 (20:30 -0700)]
net: remove dead code after sk_data_ready change

As a followup to commit 676d23690fb ("net: Fix use after free by
removing length arg from sk_data_ready callbacks"), we can remove
some useless code in sock_queue_rcv_skb() and rxrpc_queue_rcv_skb()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: use ktime_get_ns() and ktime_get_real_ns() helpers
Eric Dumazet [Sat, 23 Aug 2014 01:32:09 +0000 (18:32 -0700)]
net: use ktime_get_ns() and ktime_get_real_ns() helpers

ktime_get_ns() replaces ktime_to_ns(ktime_get())

ktime_get_real_ns() replaces ktime_to_ns(ktime_get_real())

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agovxlan: fix incorrect initializer in union vxlan_addr
Gerhard Stenzel [Fri, 22 Aug 2014 19:34:16 +0000 (21:34 +0200)]
vxlan: fix incorrect initializer in union vxlan_addr

The first initializer in the following

        union vxlan_addr ipa = {
            .sin.sin_addr.s_addr = tip,
            .sa.sa_family = AF_INET,
        };

is optimised away by the compiler, due to the second initializer,
therefore initialising .sin.sin_addr.s_addr always to 0.
This results in netlink messages indicating a L3 miss never contain the
missed IP address. This was observed with GCC 4.8 and 4.9. I do not know about previous versions.
The problem affects user space programs relying on an IP address being
sent as part of a netlink message indicating a L3 miss.

Changing
            .sa.sa_family = AF_INET,
to
            .sin.sin_family = AF_INET,
fixes the problem.

Signed-off-by: Gerhard Stenzel <gerhard.stenzel@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge tag 'linux-can-next-for-3.18-20140820' of git://gitorious.org/linux-can/linux...
David S. Miller [Sat, 23 Aug 2014 02:42:25 +0000 (19:42 -0700)]
Merge tag 'linux-can-next-for-3.18-20140820' of git://gitorious.org/linux-can/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2014-08-20

this is a pull request of 10 patches for net-next/master.

There is one patch by Wolfram Sang to clean up the build system.
Two patches by Stefan Agner that add vf610 support to the flexcan
driver. Dong Aisheng add support for bosch's m_can core, which is found
in the new freescale ARM SoCs. Sergei Shtylyov improves the rcar_can
driver by supporting all input clocks and adding device tree support.
The next patch is a small cleanup for the bit rate calculation function
by Lad, Prabhakar. And finally a patch by Himangi Saraogi, which
converts the mcp251x driver to use dmam_alloc_coherent.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge tag 'pwm/for-3.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry...
Linus Torvalds [Fri, 22 Aug 2014 21:50:21 +0000 (14:50 -0700)]
Merge tag 'pwm/for-3.17-rc2' of git://git./linux/kernel/git/thierry.reding/linux-pwm

Pull pwm fix from Thierry Reding:
 "Just one bugfix for the PWM lookup table code that would cause a PWM
  channel to be set to the wrong period and polarity for non-perfect
  matches"

* tag 'pwm/for-3.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: Fix period and polarity in pwm_get() for non-perfect matches

10 years agomac80211: fix channel switch for chanctx-based drivers
Michal Kazior [Mon, 18 Aug 2014 11:19:09 +0000 (13:19 +0200)]
mac80211: fix channel switch for chanctx-based drivers

The new_ctx pointer is set only for non-chanctx drivers.  This yielded a
crash for chanctx-based drivers during channel switch finalization:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
  IP: ieee80211_vif_use_reserved_switch+0x71c/0xb00 [mac80211]

Use an adequate chanctx pointer to fix this.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 22 Aug 2014 21:33:18 +0000 (14:33 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:
 "Here are some bug fixes that have piled up during ksummit/linuxcon.

   1) Fix endian problems in ibmveth, from Anton Blanchard.

   2) IPV6 routing code does GFP_KERNEL allocation in atomic, fix from
      Benjamin Block.

   3) SCTP association fixes from Daniel Borkmann.

   4) When multiple VLAN headers are present we have to make sure the
      second and subsequent ones are pullable in the SKB otherwise we
      blindly dereference garbage.  From Jiri Benc.

   5) The argument adjustment of the signature of hlist_add_after*()
      introduced a regression in the batman-adv code, fix from Sven
      Eckelmann.

   6) Fix TX hang handling to avoid a panic in i40e, from Anjali Singhai
      Jain.

   7) PTP flag test is inverted in i40e driver, from Jesse Brandeburg.

   8) ATM LEC driver needs to hold RTNL mutex over MTU changes, from
      Chas Williams.

   9) Truncate packets larger then the TPACKET_V3 format configured
      buffers, otherwise we overwrite past the end of said buffers.
      From Eric Dumazet.

  10) Fix endianness bugs in qlcnic firmware handling, from Rajesh
      Borundia and Shahed Shaikh.

  11) CXGB4 sometimes doesn't get all of the TX completion events it
      should resulting in SKBs getting stuck in the TX queue, from
      Hariprasad Shenai.

  12) When the FEC chip's PTP clock is disabled, you can't access the
      register.  Add necessary checks to avoid the resulting hang, from
      Fugang Duan"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (37 commits)
  drivers: isdn: eicon: xdi_msg.h: Fix typo in #ifndef
  net: sctp: fix suboptimal edge-case on non-active active/retrans path selection
  net: sctp: spare unnecessary comparison in sctp_trans_elect_best
  net: ethernet: broadcom: bnx2x: Remove redundant #ifdef
  ibmveth: Fix endian issues with rx_no_buffer statistic
  net: xgene: fix possible NULL dereference in xgene_enet_free_desc_rings()
  openvswitch: fix panic with multiple vlan headers
  net: ipv6: fib: don't sleep inside atomic lock
  net: fec: ptp: avoid register access when ipg clock is disabled
  cxgb4: Free completed tx skbs promptly
  cxgb4: Fix race condition in cleanup
  sctp: not send SCTP_PEER_ADDR_CHANGE notifications with failed probe
  bnx2x: Revert UNDI flushing mechanism
  qlcnic: Fix endianess issue in firmware load from file operation
  qlcnic: Fix endianess issue in FW dump template header
  qlcnic: Fix flash access interface to application
  MAINTAINERS: Add section for MRF24J40 IEEE 802.15.4 radio driver
  macvlan: Allow setting multicast filter on all macvlan types
  packet: handle too big packets for PACKET_V3
  MAINTAINERS: add entry for ec_bhf driver
  ...

10 years agodp83640: Fix length check for event timestamp status messages
Christian Riesch [Thu, 21 Aug 2014 13:17:04 +0000 (15:17 +0200)]
dp83640: Fix length check for event timestamp status messages

Event timestamp status messages have a variable length, ranging from
1 to 5 words (16 bit words). The current code however requires
a minimum message length of sizeof(*phy_txts). In most cases this
condition is fulfilled due to padding bytes. However, if several events
are signaled in a single message, padding bytes may not be present.
For short event timestamp status messages, the length check will fail,
and the event timestamp will be dropped.

Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: stmmac: add fix_mac_speed support for socfpga
Ley Foon Tan [Wed, 20 Aug 2014 06:33:33 +0000 (14:33 +0800)]
net: stmmac: add fix_mac_speed support for socfpga

This patch adds fix_mac_speed() support for
Altera socfpga Ethernet controller. Emac splitter is a
soft IP core in FPGA system that converts GMII interface from
Synopsys mac to RGMII/SGMII interface. This splitter core is
an optional IP if user would like to use RGMII/SGMII
interface in their system. Software needs to update a register
in splitter core when there is speed change.

Signed-off-by: Ley Foon Tan <lftan@altera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agor8169:add support for RTL8168H and RTL8107E
Chun-Hao Lin [Tue, 19 Aug 2014 17:54:04 +0000 (01:54 +0800)]
r8169:add support for RTL8168H and RTL8107E

RTL8168H is Realtek PCIe Gigabit Ethernet controller.
RTL8107E is Realtek PCIe Fast Ethernet controller.

This patch add support for these two chips.

Signed-off-by: Chun-Hao Lin <hau@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: create netlink event when bonding option is changed
Jiri Pirko [Tue, 19 Aug 2014 14:02:12 +0000 (16:02 +0200)]
bonding: create netlink event when bonding option is changed

Userspace needs to be notified if one changes some option.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Veaceslav Falico <vfalico@gmail.com>
Acked-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'bnx2x-next'
David S. Miller [Fri, 22 Aug 2014 19:31:24 +0000 (12:31 -0700)]
Merge branch 'bnx2x-next'

Yuval Mintz says:

====================
bnx2x: Start utilizing 7.10.51

This series will enable bnx2x to start utlizing its 7.10.51 FW.
In addition, it will also add timestamping support, as well as a couple
of routine semantic cleanups.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: FW assertion changes
Ariel Elior [Sun, 17 Aug 2014 13:47:51 +0000 (16:47 +0300)]
bnx2x: FW assertion changes

This is mostly a semantic change which modifies the code parsing and printing
of FW asserts.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Make BP_VF more robust
Yuval Mintz [Sun, 17 Aug 2014 13:47:50 +0000 (16:47 +0300)]
bnx2x: Make BP_VF more robust

Prevent dereference of pointer in case it's NULL.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Prevent pci_disable_sriov with assigned VFs
Yuval Mintz [Sun, 17 Aug 2014 13:47:49 +0000 (16:47 +0300)]
bnx2x: Prevent pci_disable_sriov with assigned VFs

Trying to disable sriov when VFs are assigned may lead to all kinds of problems.
This patch unifies the call in the driver to pci_disable_sriov() and prevents
them if some of the PF's child VFs are marked as assigned.

[Notice this is a bad scenario either way; User should not reach a point where
the OS tries to disable SRIOV when a VF is assigned - but currently there's no
way of preventing the user from doing so, and the ill-effect for the driver is
smaller this way]

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Prevent IOV if no entries in CAM
Yuval Mintz [Sun, 17 Aug 2014 13:47:48 +0000 (16:47 +0300)]
bnx2x: Prevent IOV if no entries in CAM

It's possible there's a bad chip configuration which will result with
PCIe IOV capabilities, but with no available interrupts for VFs.

In such case, we want to gracefully prevent the PF from initializing its
IOV capabilities rather than encounter difficulties further along the way.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Safe bnx2x_panic_dump()
Yuval Mintz [Sun, 17 Aug 2014 13:47:47 +0000 (16:47 +0300)]
bnx2x: Safe bnx2x_panic_dump()

The bnx2x panic dump spills a lot of information from the driver's
fastpath, but may be called while some of the fastpath is uninitialized.

This patch verifies that pointers are already allocated before dereferencing
them to prevent possible kernel panics.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Update driver version to 1.710.51
Yuval Mintz [Sun, 17 Aug 2014 13:47:46 +0000 (16:47 +0300)]
bnx2x: Update driver version to 1.710.51

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Code cleanup
Yuval Mintz [Sun, 17 Aug 2014 13:47:45 +0000 (16:47 +0300)]
bnx2x: Code cleanup

This patch does several semantic things:
  - Fixing typos.
  - Removing unnecessary prints.
  - Removing unused functions and definitions.
  - Change 'strange' usage of boolean variables.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Add timestamping and PTP hardware clock support
Michal Kalderon [Sun, 17 Aug 2014 13:47:44 +0000 (16:47 +0300)]
bnx2x: Add timestamping and PTP hardware clock support

This adds a PHC to the bnx2x driver. Driver supports timestamping send/receive
PTP packets, as well as adjusting the on-chip clock.

The driver has been tested with linuxptp project.

Signed-off-by: Michal Kalderon <Michal.Kalderon@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Utilize FW 7.10.51
Dmitry Kravkov [Sun, 17 Aug 2014 13:47:43 +0000 (16:47 +0300)]
bnx2x: Utilize FW 7.10.51

 - (L2) In some multi-function configurations, inter-PF and inter-VF
   Tx switching is incorrectly enabled.

 - (L2) Wrong assert code in FLR final cleanup in case it is sent not
   after FLR.

 - (L2) Chip may stall in very rare cases under heavy traffic with FW GRO
   enabled.

 - (L2) VF malicious notification error fixes.

 - (L2) Default gre tunnel to IPGRE which allows proper RSS for IPGRE packets,
   L2GRE traffic will reach single queue.

 - (FCoE) Fix data being placed in wrong buffer when corrupt FCoE frame is
   received.

 - (FCoE) Burst of FIP packets with destination MAC of ALL-FCF_MACs
   causes FCoE traffic to stop.

Signed-off-by: Dmitry Kravkov <Dmitry.Kravkov@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoaf_decnet: Use time_after_eq
Himangi Saraogi [Wed, 20 Aug 2014 17:54:40 +0000 (23:24 +0530)]
af_decnet: Use time_after_eq

The functions time_before, time_before_eq, time_after, and time_after_eq
are more robust for comparing jiffies against other values.

A simplified version of the Coccinelle semantic patch making this change
is as follows:

@change@
expression E1,E2,E3;
@@
- jiffies - E1 >= (E2*E3)
+ time_after_eq(jiffies, E1+E2*E3)

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agodecnet: Use time_after_eq
Himangi Saraogi [Wed, 20 Aug 2014 17:50:09 +0000 (23:20 +0530)]
decnet: Use time_after_eq

The functions time_before, time_before_eq, time_after, and time_after_eq
are more robust for comparing jiffies against other values.

A simplified version of the Coccinelle semantic patch making this change
is as follows:

@change@
expression E1,E2;
@@
- (jiffies - E1) >= E2
+ time_after_eq(jiffies, E1+E2)

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipconfig: Use time_before
Himangi Saraogi [Wed, 20 Aug 2014 17:44:10 +0000 (23:14 +0530)]
ipconfig: Use time_before

The functions time_before, time_before_eq, time_after, and time_after_eq
are more robust for comparing jiffies against other values.

A simplified version of the Coccinelle semantic patch making this change
is as follows:

@change@
expression E1,E2;
@@
- jiffies - E1 < E2
+ time_before(jiffies, E1+E2)

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agodn_dev: Use time_before
Himangi Saraogi [Wed, 20 Aug 2014 17:43:07 +0000 (23:13 +0530)]
dn_dev: Use time_before

The functions time_before, time_before_eq, time_after, and time_after_eq
are more robust for comparing jiffies against other values.

A simplified version of the Coccinelle semantic patch making this change
is as follows:

@change@
expression E1,E2;
@@

(
- (jiffies - E1) < E2
+ time_before(jiffies, E1+E2)
)

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobr_multicast: Replace rcu_assign_pointer() with RCU_INIT_POINTER()
Andreea-Cristina Bernat [Fri, 22 Aug 2014 13:06:09 +0000 (16:06 +0300)]
br_multicast: Replace rcu_assign_pointer() with RCU_INIT_POINTER()

The use of "rcu_assign_pointer()" is NULLing out the pointer.
According to RCU_INIT_POINTER()'s block comment:
"1.   This use of RCU_INIT_POINTER() is NULLing out the pointer"
it is better to use it instead of rcu_assign_pointer() because it has a
smaller overhead.

The following Coccinelle semantic patch was used:
@@
@@

- rcu_assign_pointer
+ RCU_INIT_POINTER
  (..., NULL)

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/openvswitch/flow.c: Replace rcu_dereference() with rcu_access_pointer()
Andreea-Cristina Bernat [Sun, 17 Aug 2014 13:29:43 +0000 (16:29 +0300)]
net/openvswitch/flow.c: Replace rcu_dereference() with rcu_access_pointer()

The "rcu_dereference()" call is used directly in a condition.
Since its return value is never dereferenced it is recommended to use
"rcu_access_pointer()" instead of "rcu_dereference()".
Therefore, this patch makes the replacement.

The following Coccinelle semantic patch was used:
@@
@@

(
 if(
 (<+...
- rcu_dereference
+ rcu_access_pointer
  (...)
  ...+>)) {...}
|
 while(
 (<+...
- rcu_dereference
+ rcu_access_pointer
  (...)
  ...+>)) {...}
)

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet/ipv4/igmp.c: Replace rcu_dereference() with rcu_access_pointer()
Andreea-Cristina Bernat [Sun, 17 Aug 2014 12:49:41 +0000 (15:49 +0300)]
net/ipv4/igmp.c: Replace rcu_dereference() with rcu_access_pointer()

The "rcu_dereference()" call is used directly in a condition.
Since its return value is never dereferenced it is recommended to use
"rcu_access_pointer()" instead of "rcu_dereference()".
Therefore, this patch makes the replacement.

The following Coccinelle semantic patch was used:
@@
@@

(
 if(
 (<+...
- rcu_dereference
+ rcu_access_pointer
  (...)
  ...+>)) {...}
|
 while(
 (<+...
- rcu_dereference
+ rcu_access_pointer
  (...)
  ...+>)) {...}
)

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: Replace rcu_dereference() with rcu_access_pointer()
Andreea-Cristina Bernat [Sun, 17 Aug 2014 10:21:45 +0000 (13:21 +0300)]
bonding: Replace rcu_dereference() with rcu_access_pointer()

This "rcu_dereference()" call is used directly in a condition.
Since its return value is never dereferenced it is recommended to use
"rcu_access_pointer()" instead of "rcu_dereference()".
Therefore, this patch makes this replacement.

The following Coccinelle semantic patch was used for solving it:
@@
@@

(
 if(
 (<+...
- rcu_dereference
+ rcu_access_pointer
  (...)
 ...+>)) {...}
|
 while(
 (<+...
- rcu_dereference
+ rcu_access_pointer
  (...)
  ...+>)) {...}
)

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocnic: Replace rcu_dereference() with rcu_access_pointer()
Andreea-Cristina Bernat [Sun, 17 Aug 2014 10:12:09 +0000 (13:12 +0300)]
cnic: Replace rcu_dereference() with rcu_access_pointer()

The "rcu_dereference()" calls are used directly in conditions.
Since their return values are never dereferenced it is recommended to use
"rcu_access_pointer()" instead of "rcu_dereference()".
Therefore, this patch makes the replacements.

The following Coccinelle semantic patch was used:
@@
@@

(
 if(
 (<+...
- rcu_dereference
+ rcu_access_pointer
  (...)
  ...+>)) {...}
|
 while(
 (<+...
- rcu_dereference
+ rcu_access_pointer
  (...)
  ...+>)) {...}
)

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv4: Restore accept_local behaviour in fib_validate_source()
Sébastien Barré [Sun, 17 Aug 2014 07:19:54 +0000 (09:19 +0200)]
ipv4: Restore accept_local behaviour in fib_validate_source()

Commit 7a9bc9b81a5b ("ipv4: Elide fib_validate_source() completely when possible.")
introduced a short-circuit to avoid calling fib_validate_source when not
needed. That change took rp_filter into account, but not accept_local.
This resulted in a change of behaviour: with rp_filter and accept_local
off, incoming packets with a local address in the source field should be
dropped.

Here is how to reproduce the change pre/post 7a9bc9b81a5b commit:
-configure the same IPv4 address on hosts A and B.
-try to send an ARP request from B to A.
-The ARP request will be dropped before that commit, but accepted and answered
after that commit.

This adds a check for ACCEPT_LOCAL, to maintain full
fib validation in case it is 0. We also leave __fib_validate_source() earlier
when possible, based on the same check as fib_validate_source(), once the
accept_local stuff is verified.

Cc: Gregory Detal <gregory.detal@uclouvain.be>
Cc: Christoph Paasch <christoph.paasch@uclouvain.be>
Cc: Hannes Frederic Sowa <hannes@redhat.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Sébastien Barré <sebastien.barre@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoisdn/bas_gigaset: use USB API functions rather than constants
Himangi Saraogi [Sun, 17 Aug 2014 00:31:20 +0000 (06:01 +0530)]
isdn/bas_gigaset: use USB API functions rather than constants

This patch introduces the use of the function usb_endpoint_num.

The Coccinelle semantic patch that makes these changes is as follows:

@@ struct usb_endpoint_descriptor *epd; @@

- (epd->bEndpointAddress & \(USB_ENDPOINT_NUMBER_MASK\|0x0f\))
+ usb_endpoint_num(epd)

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoisdn/gigaset: use USB API functions rather than constants
Himangi Saraogi [Fri, 15 Aug 2014 16:24:12 +0000 (21:54 +0530)]
isdn/gigaset: use USB API functions rather than constants

This patch introduces the use of the function usb_endpoint_num.

The Coccinelle semantic patch that makes these changes is as follows:

@@ struct usb_endpoint_descriptor *epd; @@

- (epd->bEndpointAddress & \(USB_ENDPOINT_NUMBER_MASK\|0x0f\))
+ usb_endpoint_num(epd)

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agohyperv: Increase the buffer length for netvsc_channel_cb()
Haiyang Zhang [Fri, 15 Aug 2014 19:18:19 +0000 (19:18 +0000)]
hyperv: Increase the buffer length for netvsc_channel_cb()

When the buffer is too small for a packet from VMBus, a bigger buffer will be
allocated in netvsc_channel_cb() and retry reading the packet from VMBus.
Increasing this buffer size will reduce the retry overhead.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agodrivers: isdn: eicon: xdi_msg.h: Fix typo in #ifndef
Rasmus Villemoes [Fri, 22 Aug 2014 16:39:14 +0000 (18:39 +0200)]
drivers: isdn: eicon: xdi_msg.h: Fix typo in #ifndef

Test for definedness of the macro which is actually defined (the
change is hard to see: it is s/SSS/SSA/).

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sctp: fix suboptimal edge-case on non-active active/retrans path selection
Daniel Borkmann [Fri, 22 Aug 2014 11:03:30 +0000 (13:03 +0200)]
net: sctp: fix suboptimal edge-case on non-active active/retrans path selection

In SCTP, selection of active (T.ACT) and retransmission (T.RET)
transports is being done whenever transport control operations
(UP, DOWN, PF, ...) are engaged through sctp_assoc_control_transport().

Commits 4c47af4d5eb2 ("net: sctp: rework multihoming retransmission
path selection to rfc4960") and a7288c4dd509 ("net: sctp: improve
sctp_select_active_and_retran_path selection") have both improved
it towards a more fine-grained and optimal path selection.

Currently, the selection algorithm for T.ACT and T.RET is as follows:

1) Elect the two most recently used ACTIVE transports T1, T2 for
   T.ACT, T.RET, where T.ACT<-T1 and T1 is most recently used
2) In case primary path T.PRI not in {T1, T2} but ACTIVE, set
   T.ACT<-T.PRI and T.RET<-T1
3) If only T1 is ACTIVE from the set, set T.ACT<-T1 and T.RET<-T1
4) If none is ACTIVE, set T.ACT<-best(T.PRI, T.RET, T3) where
   T3 is the most recently used (if avail) in PF, set T.RET<-T.PRI

Prior to above commits, 4) was simply a camp on T.ACT<-T.PRI and
T.RET<-T.PRI, ignoring possible paths in PF. Camping on T.PRI is
still slightly suboptimal as it can lead to the following scenario:

Setup:
        <A>                                <B>
    T1: p1p1 (10.0.10.10) <==>  .'`)  <==> p1p1 (10.0.10.12)  <= T.PRI
    T2: p1p2 (10.0.10.20) <==> (_ . ) <==> p1p2 (10.0.10.22)

    net.sctp.rto_min = 1000
    net.sctp.path_max_retrans = 2
    net.sctp.pf_retrans = 0
    net.sctp.hb_interval = 1000

T.PRI is permanently down, T2 is put briefly into PF state (e.g. due to
link flapping). Here, the first time transmission is sent over PF path
T2 as it's the only non-INACTIVE path, but the retransmitted data-chunks
are sent over the INACTIVE path T1 (T.PRI), which is not good.

After the patch, it's choosing better transports in both cases by
modifying step 4):

4) If none is ACTIVE, set T.ACT_new<-best(T.ACT_old, T3) where T3 is
   the most recently used (if avail) in PF, set T.RET<-T.ACT_new

This will still select a best possible path in PF if available (which
can also include T.PRI/T.RET), and set both T.ACT/T.RET to it.

In case sctp_assoc_control_transport() *just* put T.ACT_old into INACTIVE
as it transitioned from ACTIVE->PF->INACTIVE and stays in INACTIVE just
for a very short while before going back ACTIVE, it will guarantee that
this path will be reselected for T.ACT/T.RET since T3 (PF) is not
available.

Previously, this was not possible, as we would only select between T.PRI
and T.RET, and a possible T3 would be NULL due to the fact that we have
just transitioned T3 in sctp_assoc_control_transport() from PF->INACTIVE
and would select a suboptimal path when T.PRI/T.RET have worse properties.

In the case that T.ACT_old permanently went to INACTIVE during this
transition and there's no PF path available, plus T.PRI and T.RET are
INACTIVE as well, we would now camp on T.ACT_old, but if everything is
being INACTIVE there's really not much we can do except hoping for a
successful HB to bring one of the transports back up again and, thus
cause a new selection through sctp_assoc_control_transport().

Now both tests work fine:

Case 1:

 1. T1 S(ACTIVE) T.ACT
    T2 S(ACTIVE) T.RET

 2. T1 S(ACTIVE) T.ACT, T.RET
    T2 S(PF)

 3. T1 S(ACTIVE) T.ACT, T.RET
    T2 S(INACTIVE)

 5. T1 S(PF) T.ACT, T.RET
    T2 S(INACTIVE)

[ 5.1 T1 S(INACTIVE) T.ACT, T.RET
      T2 S(INACTIVE) ]

 6. T1 S(ACTIVE) T.ACT, T.RET
    T2 S(INACTIVE)

 7. T1 S(ACTIVE) T.ACT
    T2 S(ACTIVE) T.RET

Case 2:

 1. T1 S(ACTIVE) T.ACT
    T2 S(ACTIVE) T.RET

 2. T1 S(PF)
    T2 S(ACTIVE) T.ACT, T.RET

 3. T1 S(INACTIVE)
    T2 S(ACTIVE) T.ACT, T.RET

 5. T1 S(INACTIVE)
    T2 S(PF) T.ACT, T.RET

[ 5.1 T1 S(INACTIVE)
      T2 S(INACTIVE) T.ACT, T.RET ]

 6. T1 S(INACTIVE)
    T2 S(ACTIVE) T.ACT, T.RET

 7. T1 S(ACTIVE) T.ACT
    T2 S(ACTIVE) T.RET

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: sctp: spare unnecessary comparison in sctp_trans_elect_best
Daniel Borkmann [Fri, 22 Aug 2014 11:03:29 +0000 (13:03 +0200)]
net: sctp: spare unnecessary comparison in sctp_trans_elect_best

When both transports are the same, we don't have to go down that
road only to realize that we will return the very same transport.
We are guaranteed that curr is always non-NULL. Therefore, just
short-circuit this special case.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: ethernet: broadcom: bnx2x: Remove redundant #ifdef
Rasmus Villemoes [Wed, 20 Aug 2014 13:14:49 +0000 (15:14 +0200)]
net: ethernet: broadcom: bnx2x: Remove redundant #ifdef

Nothing defines _ASM_GENERIC_INT_L64_H, it is a weird way to check for
64 bit longs, and u64 should be printed using %llx anyway.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoibmveth: Fix endian issues with rx_no_buffer statistic
Anton Blanchard [Fri, 22 Aug 2014 01:36:52 +0000 (11:36 +1000)]
ibmveth: Fix endian issues with rx_no_buffer statistic

Hidden away in the last 8 bytes of the buffer_list page is a solitary
statistic. It needs to be byte swapped or else ethtool -S will
produce numbers that terrify the user.

Since we do this in multiple places, create a helper function with a
comment explaining what is going on.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: xgene: fix possible NULL dereference in xgene_enet_free_desc_rings()
Iyappan Subramanian [Thu, 21 Aug 2014 20:44:48 +0000 (13:44 -0700)]
net: xgene: fix possible NULL dereference in xgene_enet_free_desc_rings()

A NULL pointer dereference is possible for the argument ring->buf_pool
which is passed to xgene_enet_free_desc_ring(), as ring could be NULL.

And now since NULL pointers are being checked for before the calls to
xgene_enet_free_desc_ring(), might as well take advantage of them and
not call the function if the argument would be NULL.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoopenvswitch: fix panic with multiple vlan headers
Jiri Benc [Thu, 21 Aug 2014 19:33:44 +0000 (21:33 +0200)]
openvswitch: fix panic with multiple vlan headers

When there are multiple vlan headers present in a received frame, the first
one is put into vlan_tci and protocol is set to ETH_P_8021Q. Anything in the
skb beyond the VLAN TPID may be still non-linear, including the inner TCI
and ethertype. While ovs_flow_extract takes care of IP and IPv6 headers, it
does nothing with ETH_P_8021Q. Later, if OVS_ACTION_ATTR_POP_VLAN is
executed, __pop_vlan_tci pulls the next vlan header into vlan_tci.

This leads to two things:

1. Part of the resulting ethernet header is in the non-linear part of the
   skb. When eth_type_trans is called later as the result of
   OVS_ACTION_ATTR_OUTPUT, kernel BUGs in __skb_pull. Also, __pop_vlan_tci
   is in fact accessing random data when it reads past the TPID.

2. network_header points into the ethernet header instead of behind it.
   mac_len is set to a wrong value (10), too.

Reported-by: Yulong Pei <ypei@redhat.com>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: ipv6: fib: don't sleep inside atomic lock
Benjamin Block [Thu, 21 Aug 2014 17:37:48 +0000 (19:37 +0200)]
net: ipv6: fib: don't sleep inside atomic lock

The function fib6_commit_metrics() allocates a piece of memory in mode
GFP_KERNEL while holding an atomic lock from higher up in the stack, in
the function __ip6_ins_rt(). This produces the following BUG:

> BUG: sleeping function called from invalid context at mm/slub.c:1250
> in_atomic(): 1, irqs_disabled(): 0, pid: 2909, name: dhcpcd
> 2 locks held by dhcpcd/2909:
>  #0:  (rtnl_mutex){+.+.+.}, at: [<ffffffff81978e67>] rtnl_lock+0x17/0x20
>  #1:  (&tb->tb6_lock){++--+.}, at: [<ffffffff81a6951a>] ip6_route_add+0x65a/0x800
> CPU: 1 PID: 2909 Comm: dhcpcd Not tainted 3.17.0-rc1 #1
> Hardware name: ASUS All Series/Q87T, BIOS 0216 10/16/2013
>  0000000000000008 ffff8800c8f13858 ffffffff81af135a 0000000000000000
>  ffff880212202430 ffff8800c8f13878 ffffffff810f8d3a ffff880212202c98
>  0000000000000010 ffff8800c8f138c8 ffffffff8121ad0e 0000000000000001
> Call Trace:
>  [<ffffffff81af135a>] dump_stack+0x4e/0x68
>  [<ffffffff810f8d3a>] __might_sleep+0x10a/0x120
>  [<ffffffff8121ad0e>] kmem_cache_alloc_trace+0x4e/0x190
>  [<ffffffff81a6bcd6>] ? fib6_commit_metrics+0x66/0x110
>  [<ffffffff81a6bcd6>] fib6_commit_metrics+0x66/0x110
>  [<ffffffff81a6cbf3>] fib6_add+0x883/0xa80
>  [<ffffffff81a6951a>] ? ip6_route_add+0x65a/0x800
>  [<ffffffff81a69535>] ip6_route_add+0x675/0x800
>  [<ffffffff81a68f2a>] ? ip6_route_add+0x6a/0x800
>  [<ffffffff81a6990c>] inet6_rtm_newroute+0x5c/0x80
>  [<ffffffff8197cf01>] rtnetlink_rcv_msg+0x211/0x260
>  [<ffffffff81978e67>] ? rtnl_lock+0x17/0x20
>  [<ffffffff81119708>] ? lock_release_holdtime+0x28/0x180
>  [<ffffffff81978e67>] ? rtnl_lock+0x17/0x20
>  [<ffffffff8197ccf0>] ? __rtnl_unlock+0x20/0x20
>  [<ffffffff819a989e>] netlink_rcv_skb+0x6e/0xd0
>  [<ffffffff81978ee5>] rtnetlink_rcv+0x25/0x40
>  [<ffffffff819a8e59>] netlink_unicast+0xd9/0x180
>  [<ffffffff819a9600>] netlink_sendmsg+0x700/0x770
>  [<ffffffff81103735>] ? local_clock+0x25/0x30
>  [<ffffffff8194e83c>] sock_sendmsg+0x6c/0x90
>  [<ffffffff811f98e3>] ? might_fault+0xa3/0xb0
>  [<ffffffff8195ca6d>] ? verify_iovec+0x7d/0xf0
>  [<ffffffff8194ec3e>] ___sys_sendmsg+0x37e/0x3b0
>  [<ffffffff8111ef15>] ? trace_hardirqs_on_caller+0x185/0x220
>  [<ffffffff81af979e>] ? mutex_unlock+0xe/0x10
>  [<ffffffff819a55ec>] ? netlink_insert+0xbc/0xe0
>  [<ffffffff819a65e5>] ? netlink_autobind.isra.30+0x125/0x150
>  [<ffffffff819a6520>] ? netlink_autobind.isra.30+0x60/0x150
>  [<ffffffff819a84f9>] ? netlink_bind+0x159/0x230
>  [<ffffffff811f989a>] ? might_fault+0x5a/0xb0
>  [<ffffffff8194f25e>] ? SYSC_bind+0x7e/0xd0
>  [<ffffffff8194f8cd>] __sys_sendmsg+0x4d/0x80
>  [<ffffffff8194f912>] SyS_sendmsg+0x12/0x20
>  [<ffffffff81afc692>] system_call_fastpath+0x16/0x1b

Fixing this by replacing the mode GFP_KERNEL with GFP_ATOMIC.

Signed-off-by: Benjamin Block <bebl@mageta.org>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: fec: ptp: avoid register access when ipg clock is disabled
Nimrod Andy [Thu, 21 Aug 2014 09:09:38 +0000 (17:09 +0800)]
net: fec: ptp: avoid register access when ipg clock is disabled

The current kernel hang on i.MX6SX with rootfs mount from MMC.
The root cause is that ptp uses a periodic timer to access enet register
even if ipg clock is disabled.

FEC ptp driver start one period timer to read 1588 counter register in the
ptp init function that is called after FEC driver is probed.

To save power, after FEC probe finish, FEC driver disable all clocks including
ipg clock that is needed for register access.

i.MX5x, i.MX6q/dl/sl FEC register access don't cause system hang when ipg clock
is disabled, just return zero value. But for i.MX6sx SOC, it cause system hang.

To avoid the issue, we need to check ptp clock status before ptp timer count access.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 22 Aug 2014 16:08:20 +0000 (09:08 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "This small set of fixes addresses a few issues introduced during the
  merge window, including:

   - fix typo in I-cache detection that was causing us to treat all
     I-caches as aliasing
   - hook up memfd_create and getrandom syscalls for native and compat
   - revert a temporary hack for defconfig builds in -next (the audit
     tree changes didn't make it in this merge window)
   - a couple of UEFI fixes for TEXT_OFFSET fuzzing and /memreserve/
   - a simple sparsemem fix for 48-bit physical addressing
   - small defconfig updates to get autotesters working with X-gene"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  Revert "arm64: Do not invoke audit_syscall_* functions if !CONFIG_AUDIT_SYSCALL"
  arm64: mm: update max pa bits to 48
  arm64: ignore DT memreserve entries when booting in UEFI mode
  arm64: configs: Enable X-Gene SATA and ethernet in defconfig
  arm64: align randomized TEXT_OFFSET on 4 kB boundary
  asm-generic: add memfd_create system call to unistd.h
  arm64: compat: wire up memfd_create and getrandom syscalls for aarch32
  arm64: fix typo in I-cache policy detection

10 years agoMerge tag 'iommu-fixes-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 22 Aug 2014 16:06:22 +0000 (09:06 -0700)]
Merge tag 'iommu-fixes-v3.17-rc1' of git://git./linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:
 "The fixes include:

   - fix a crash in the VT-d driver when devices with a driver attached
     are hot-unplugged

   - fix a AMD IOMMU driver crash with device assignment of 32 bit PCI
     devices to KVM guests

   - fix for a copy&paste error in generic IOMMU code.  Now the right
     function pointer is checked before calling"

* tag 'iommu-fixes-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/core: Check for the right function pointer in iommu_map()
  iommu/amd: Fix cleanup_domain for mass device removal
  iommu/vt-d: Defer domain removal if device is assigned to a driver

10 years agocxgb4: Free completed tx skbs promptly
Hariprasad Shenai [Thu, 21 Aug 2014 11:34:46 +0000 (17:04 +0530)]
cxgb4: Free completed tx skbs promptly

Description of problem:
The NIC card is not reporting back to the driver the transmitted skbs,
so they get stuck in the TX ring causing issues with reference
counters in other kernel components.

Developed a new Automatic Egress Queue Update firmware facility to slowly tick
through Egress Queues and send back any outstanding CIDX Updates which are
laying around.

Based on original work by Casey Leedom <leedom@chelsio.com>

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge tag 'linux-can-fixes-for-3.17-20140821' of git://gitorious.org/linux-can/linux-can
David S. Miller [Fri, 22 Aug 2014 04:53:15 +0000 (21:53 -0700)]
Merge tag 'linux-can-fixes-for-3.17-20140821' of git://gitorious.org/linux-can/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2014-08-21

The first patch is from Mirza Krak, it fixes the initialization of the hardware
in the sja1000 driver. The next patch is contributed by Dan Carpenter, it fixes
the error handling in the c_can's probe function. Then there are two patches
for the flexcan driver, one by Alexander Stein, which fixes the resetting of
the bus error interrupt mask, the other one by Sebastian Andrzej Siewior which
adds an additional error state transition message.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4: Fix race condition in cleanup
Anish Bhatt [Wed, 20 Aug 2014 20:44:06 +0000 (13:44 -0700)]
cxgb4: Fix race condition in cleanup

There is a possible race condition when we unregister the PCI Driver and then
flush/destroy the global "workq". This could lead to situations where there
are tasks on the Work Queue with references to now deleted adapter data
structures. Instead, have per-adapter Work Queues which were instantiated and
torn down in init_one() and remove_one(), respectively.

v2: Remove unnecessary call to flush_workqueue() before destroy_workqueue()

Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosctp: not send SCTP_PEER_ADDR_CHANGE notifications with failed probe
zhuyj [Wed, 20 Aug 2014 09:31:43 +0000 (17:31 +0800)]
sctp: not send SCTP_PEER_ADDR_CHANGE notifications with failed probe

Since the transport has always been in state SCTP_UNCONFIRMED, it
therefore wasn't active before and hasn't been used before, and it
always has been, so it is unnecessary to bug the user with a
notification.

Reported-by: Deepak Khandelwal <khandelwal.deepak.1987@gmail.com>
Suggested-by: Vlad Yasevich <vyasevich@gmail.com>
Suggested-by: Michael Tuexen <tuexen@fh-muenster.de>
Suggested-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Zhu Yanjun <Yanjun.Zhu@windriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Revert UNDI flushing mechanism
Yuval Mintz [Mon, 18 Aug 2014 19:36:23 +0000 (22:36 +0300)]
bnx2x: Revert UNDI flushing mechanism

Commit 91ebb929b6f8 ("bnx2x: Add support for Multi-Function UNDI") [which was
later supposedly fixed by de682941eef3 ("bnx2x: Fix UNDI driver unload")]
introduced a bug in which in some [yet-to-be-determined] scenarios the
alternative flushing mechanism which was to guarantee the Rx buffers are
empty before resetting them during device probe will fail.
If this happens, when device will be loaded once more a fatal attention will
occur; Since this most likely happens in boot from SAN scenarios, the machine
will fail to load.

Notice this may occur not only in the 'Multi-Function' scenario but in the
regular scenario as well, i.e., this introduced a regression in the driver's
ability to perform boot from SAN.

The patch reverts the mechanism and applies the old scheme to multi-function
devices as well as to single-function devices.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'qlcnic'
David S. Miller [Fri, 22 Aug 2014 00:43:20 +0000 (17:43 -0700)]
Merge branch 'qlcnic'

Shahed Shaikh says:

====================
qlcnic: Bug fixes

This series fixes some bugs related to endianess.

Please apply this series to net.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: Fix endianess issue in firmware load from file operation
Shahed Shaikh [Mon, 18 Aug 2014 13:31:55 +0000 (09:31 -0400)]
qlcnic: Fix endianess issue in firmware load from file operation

Firmware binary file is in little endian. On big-endian architecture, while
writing this binary FW file to adapters memory, writel() swaps the data resulting into
corruption of FW image. So, swap the data before writing into adapters memory.

Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: Fix endianess issue in FW dump template header
Rajesh Borundia [Mon, 18 Aug 2014 13:31:54 +0000 (09:31 -0400)]
qlcnic: Fix endianess issue in FW dump template header

Firmware dump template header is read from adapter using
readl() which swaps the data. So, adjust structure
element on the boundary of 32bit dword.

Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoqlcnic: Fix flash access interface to application
Jitendra Kalsaria [Mon, 18 Aug 2014 13:31:53 +0000 (09:31 -0400)]
qlcnic: Fix flash access interface to application

Application expects flash data in little endian, but driver reads/writes
flash data using readl()/writel() APIs which swaps data on big endian machine.
So, swap the data after reading from and before writing to flash memory.

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMAINTAINERS: Add section for MRF24J40 IEEE 802.15.4 radio driver
Alan Ott [Sat, 16 Aug 2014 21:09:03 +0000 (17:09 -0400)]
MAINTAINERS: Add section for MRF24J40 IEEE 802.15.4 radio driver

Alan is the original author of the driver. This change was discussed
with the 802.15.4 subsystem maintainer, Alexander Aring.

Signed-off-by: Alan Ott <alan@signal11.us>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomacvlan: Allow setting multicast filter on all macvlan types
Vlad Yasevich [Fri, 15 Aug 2014 17:04:59 +0000 (13:04 -0400)]
macvlan: Allow setting multicast filter on all macvlan types

Currently, macvlan code restricts multicast and unicast
filter setting only to passthru devices.  As a result,
if a guest using macvtap wants to receive multicast
traffic, it has to set IFF_ALLMULTI or IFF_PROMISC.

This patch makes it possible to use the fdb interface
to add multicast addresses to the filter thus allowing
a guest to receive only targeted multicast traffic.

CC: John Fastabend <john.r.fastabend@intel.com>
CC: Michael S. Tsirkin <mst@redhat.com>
CC: Jason Wang <jasowang@redhat.com>
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agopacket: handle too big packets for PACKET_V3
Eric Dumazet [Fri, 15 Aug 2014 16:16:04 +0000 (09:16 -0700)]
packet: handle too big packets for PACKET_V3

af_packet can currently overwrite kernel memory by out of bound
accesses, because it assumed a [new] block can always hold one frame.

This is not generally the case, even if most existing tools do it right.

This patch clamps too long frames as API permits, and issue a one time
error on syslog.

[  394.357639] tpacket_rcv: packet too big, clamped from 5042 to 3966. macoff=82

In this example, packet header tp_snaplen was set to 3966,
and tp_len was set to 5042 (skb->len)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: f6fb8f100b80 ("af-packet: TPACKET_V3 flexible buffer implementation.")
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMAINTAINERS: add entry for ec_bhf driver
Dariusz Marcinkiewicz [Fri, 15 Aug 2014 15:50:47 +0000 (17:50 +0200)]
MAINTAINERS: add entry for ec_bhf driver

Added entry for ec_bhf driver.

Signed-off-by: Dariusz Marcinkiewicz <reksio@newterm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agolec: Use rtnl lock/unlock when updating MTU
chas williams - CONTRACTOR [Thu, 14 Aug 2014 13:19:47 +0000 (09:19 -0400)]
lec: Use rtnl lock/unlock when updating MTU

The LECS response contains the MTU that should be used.  Correctly
synchronize with other layers when updating.

Signed-off-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'for-3.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Thu, 21 Aug 2014 21:26:27 +0000 (14:26 -0700)]
Merge branch 'for-3.17-fixes' of git://git./linux/kernel/git/tj/libata

Pull libata fixes from Tejun Heo:
 "Nothing drastic but pushing out early due to build breakage in the new
  tegra platform.

  Additionally:

   - M550 tagged trim blacklist pattern is widened so that it matches
     the new 1TB model

   - three controller specific fixes"

* 'for-3.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata: widen Crucial M550 blacklist matching
  pata_scc: propagate return value of scc_wait_after_reset
  ata: ahci_tegra: Change include to fix compilation
  pata_samsung_cf: change ret type to signed
  ahci_xgene: Removing NCQ support from the APM X-Gene SoC AHCI SATA Host Controller driver.

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Thu, 21 Aug 2014 21:25:20 +0000 (14:25 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

Pull HID fixes from Jiri Kosina:

 - fixes for a couple potential memory corruption problems (the HW would
   have to be manufactured to be deliberately evil to trigger those)
   found by Ben Hawkes
 - fix for potential infinite loop when using sysfs interface of
   logitech driver, from Simon Wood
 - a couple more simple driver fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: fix a couple of off-by-ones
  HID: logitech: perform bounds checking on device_id early enough
  HID: logitech: fix bounds checking on LED report size
  HID: logitech: Prevent possibility of infinite loop when using /sys interface
  HID: rmi: print an error if F11 is not found instead of stopping the device
  HID: hid-sensor-hub: use devm_ functions consistently
  HID: huion: Use allocated buffer for DMA
  HID: huion: Fail on parameter retrieval errors

10 years agoMerge tag 'sound-3.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Thu, 21 Aug 2014 21:24:40 +0000 (14:24 -0700)]
Merge tag 'sound-3.17-rc2' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A bunch of ASoC fixes with a few HD-audio fixes in this pull request.

  All fairly small, boring and device-specific fixes, in addition to
  MAINTAINERS update for better reviewing"

* tag 'sound-3.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/hdmi - apply Valleyview fix-ups to Cherryview display codec
  ALSA: hda/hdmi - set depop_delay for haswell plus
  ALSA: hda - restore the gpio led after resume
  ALSA: hda/realtek - Avoid setting wrong COEF on ALC269 & co
  ASoC: pxa-ssp: drop SNDRV_PCM_FMTBIT_S24_LE
  ASoC: fsl-esai: Revert .xlate_tdm_slot_mask() support
  ASoC: mcasp: Fix implicit BLCK divider setting
  ASoC: arizona: Fix TDM slot length handling in arizona_hw_params
  ASoC: pcm512x: Correct Digital Playback control names
  ASoC: dapm: Fix uninitialized variable in snd_soc_dapm_get_enum_double()
  ASoC: Intel: Restore Baytrail ADSP streams only when ADSP was in reset
  ASoC: Intel: Wait Baytrail ADSP boot at resume_early stage
  ASoC: Intel: Merge Baytrail ADSP suspend_noirq into suspend_late
  MAINTAINERS: Add i.MX maintainers and paths to Freescale ASoC entry
  ASoC: Intel: Update Baytrail ADSP firmware name

10 years agoMerge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Thu, 21 Aug 2014 21:07:44 +0000 (14:07 -0700)]
Merge branch 'i2c/for-next' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Here is the fixup for the 'lowlight' of my last pull request.  I2C is
  not selected anymore by I2C_ACPI.  Instead, the code in question now
  depends on I2C=y.

  Also, Mika has agreed to support me and be the maintainer for I2C-ACPI
  related patches.  Finally, a new-ID-patch came along last week"

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  MAINTAINERS: add maintainer for ACPI parts of I2C
  i2c: i801: Add PCI ID for Intel Braswell
  i2c: rework kernel config I2C_ACPI

10 years agoMerge tag 'please-pull-memfd_create' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 21 Aug 2014 21:06:56 +0000 (14:06 -0700)]
Merge tag 'please-pull-memfd_create' of git://git./linux/kernel/git/aegl/linux

Pull ia64 update from Tony Luck:
 "Add memfd_create syscall to ia64"

* tag 'please-pull-memfd_create' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  [IA64] Wire up memfd_create() system call

10 years agoMerge tag 'microblaze-3.17-rc2' of git://git.monstr.eu/linux-2.6-microblaze
Linus Torvalds [Thu, 21 Aug 2014 21:06:18 +0000 (14:06 -0700)]
Merge tag 'microblaze-3.17-rc2' of git://git.monstr.eu/linux-2.6-microblaze

Pull microblaze update from Michal Simek:
 "Wire-up seccomp/getrandom/memfd_create syscalls"

* tag 'microblaze-3.17-rc2' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Wire-up memfd_create syscall
  microblaze: Wire-up getrandom syscall
  microblaze: Wire-up seccomp syscall

10 years agoHID: fix a couple of off-by-ones
Jiri Kosina [Thu, 21 Aug 2014 14:57:48 +0000 (09:57 -0500)]
HID: fix a couple of off-by-ones

There are a few very theoretical off-by-one bugs in report descriptor size
checking when performing a pre-parsing fixup. Fix those.

Cc: stable@vger.kernel.org
Reported-by: Ben Hawkes <hawkes@google.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
10 years agoHID: logitech: perform bounds checking on device_id early enough
Jiri Kosina [Thu, 21 Aug 2014 14:57:17 +0000 (09:57 -0500)]
HID: logitech: perform bounds checking on device_id early enough

device_index is a char type and the size of paired_dj_deivces is 7
elements, therefore proper bounds checking has to be applied to
device_index before it is used.

We are currently performing the bounds checking in
logi_dj_recv_add_djhid_device(), which is too late, as malicious device
could send REPORT_TYPE_NOTIF_DEVICE_UNPAIRED early enough and trigger the
problem in one of the report forwarding functions called from
logi_dj_raw_event().

Fix this by performing the check at the earliest possible ocasion in
logi_dj_raw_event().

Cc: stable@vger.kernel.org
Reported-by: Ben Hawkes <hawkes@google.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
10 years agoHID: logitech: fix bounds checking on LED report size
Jiri Kosina [Thu, 21 Aug 2014 14:56:47 +0000 (09:56 -0500)]
HID: logitech: fix bounds checking on LED report size

The check on report size for REPORT_TYPE_LEDS in logi_dj_ll_raw_request()
is wrong; the current check doesn't make any sense -- the report allocated
by HID core in hid_hw_raw_request() can be much larger than
DJREPORT_SHORT_LENGTH, and currently logi_dj_ll_raw_request() doesn't
handle this properly at all.

Fix the check by actually trimming down the report size properly if it is
too large.

Cc: stable@vger.kernel.org
Reported-by: Ben Hawkes <hawkes@google.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
10 years agocan: flexcan: handle state passive -> warning transition
Sebastian Andrzej Siewior [Fri, 25 Jul 2014 18:16:40 +0000 (20:16 +0200)]
can: flexcan: handle state passive -> warning transition

Once the CAN-bus is open and a packet is sent, the controller switches
into the PASSIVE state. Once the BUS is closed again it goes the back
err-warning. The TX error counter goes 0 -> 0x80 -> 0x7f.
This patch makes sure that the user learns about this state chang
(CAN_STATE_ERROR_WARNING => CAN_STATE_ERROR_PASSIVE)

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Matthias Klein <matthias.klein@optimeas.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
10 years agocan: flexcan: Disable error interrupt when bus error reporting is disabled
Alexander Stein [Tue, 12 Aug 2014 08:47:21 +0000 (10:47 +0200)]
can: flexcan: Disable error interrupt when bus error reporting is disabled

In case we don't have FLEXCAN_HAS_BROKEN_ERR_STATE and the user set
CAN_CTRLMODE_BERR_REPORTING once it can not be unset again until reboot.
So in case neither hardware nor user wants the error interrupt disable
the bit.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
10 years agocan: c_can: checking IS_ERR() instead of NULL
Dan Carpenter [Fri, 1 Aug 2014 08:53:44 +0000 (11:53 +0300)]
can: c_can: checking IS_ERR() instead of NULL

devm_ioremap() returns NULL on error, not an ERR_PTR().

Fixes: 33cf75656923 ('can: c_can_platform: Fix raminit, use devm_ioremap() instead of devm_ioremap_resource()')

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v3.11
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
10 years agocan: sja1000: Validate initialization state in start method
Mirza Krak [Fri, 8 Aug 2014 12:30:50 +0000 (14:30 +0200)]
can: sja1000: Validate initialization state in start method

When sja1000 is not compiled as module the SJA1000 chip is only
initialized during device registration on kernel boot. Should the chip
get a hardware reset there is no way to reinitialize it without re-
booting the Linux kernel.

This patch adds a check in sja1000_start if the chip is initialized, if
not we initialize it.

Signed-off-by: Mirza Krak <mirza.krak@hostmobility.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
10 years agomicroblaze: Wire-up memfd_create syscall
Michal Simek [Thu, 21 Aug 2014 08:19:28 +0000 (10:19 +0200)]
microblaze: Wire-up memfd_create syscall

Add new memfd_create syscall.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
10 years agomicroblaze: Wire-up getrandom syscall
Michal Simek [Thu, 7 Aug 2014 13:59:05 +0000 (15:59 +0200)]
microblaze: Wire-up getrandom syscall

Add new getrandom syscall.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
10 years agomicroblaze: Wire-up seccomp syscall
Michal Simek [Thu, 7 Aug 2014 13:57:41 +0000 (15:57 +0200)]
microblaze: Wire-up seccomp syscall

Add new seccomp syscall.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
10 years agoMerge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Wed, 20 Aug 2014 23:33:21 +0000 (18:33 -0500)]
Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Most important fixes in this set include three SMB3 fixes for stable
  (including fix for possible kernel oops), and a workaround to allow
  writes to Mac servers (only cifs dialect, not more current SMB2.1,
  worked to Mac servers).  Also fallocate support added, and lease fix
  from Jeff"

* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
  [SMB3] Enable fallocate -z support for SMB3 mounts
  enable fallocate punch hole ("fallocate -p") for SMB3
  Incorrect error returned on setting file compressed on SMB2
  CIFS: Fix wrong directory attributes after rename
  CIFS: Fix SMB2 readdir error handling
  [CIFS] Possible null ptr deref in SMB2_tcon
  [CIFS] Workaround MacOS server problem with SMB2.1 write  response
  cifs: handle lease F_UNLCK requests properly
  Cleanup sparse file support by creating worker function for it
  Add sparse file support to SMB2/SMB3 mounts
  Add missing definitions for CIFS File System Attributes
  cifs: remove unused function cifs_oplock_break_wait

10 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Linus Torvalds [Wed, 20 Aug 2014 23:32:16 +0000 (18:32 -0500)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs

Pull filesystem fixes from Jan Kara:
 "udf, isofs, and ext3 bug fixes"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext3: Count internal journal as bsddf overhead in ext3_statfs
  isofs: Fix unbounded recursion when processing relocated directories
  udf: avoid unneeded up_write when fail to add entry in ->symlink

10 years agoMerge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86
Linus Torvalds [Wed, 20 Aug 2014 23:23:06 +0000 (18:23 -0500)]
Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86

Pull x86 platform driver revert from Matthew Garrett:
 "This clearly shouldn't have been merged.  No excuse on my part"

* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86:
  Revert "platform/x86/toshiba-apci.c possible bad if test?"

10 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 20 Aug 2014 23:22:10 +0000 (18:22 -0500)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Reverting a 3.16 patch, fixing two bugs in device assignment (one has
  a CVE), and fixing some problems introduced during the merge window
  (the CMA bug came in via Andrew, the x86 ones via yours truly)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  virt/kvm/assigned-dev.c: Set 'dev->irq_source_id' to '-1' after free it
  Revert "KVM: x86: Increase the number of fixed MTRR regs to 10"
  KVM: x86: do not check CS.DPL against RPL during task switch
  KVM: x86: Avoid emulating instructions on #UD mistakenly
  PC, KVM, CMA: Fix regression caused by wrong get_order() use
  kvm: iommu: fix the third parameter of kvm_iommu_put_pages (CVE-2014-3601)

10 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Wed, 20 Aug 2014 23:20:50 +0000 (18:20 -0500)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "These are the two bug fixes I mentioned in the final merge window
  pull.  One is a reversed logic check in the device busy tests which
  can cause a nasty hang and another crash seen in the new SCSI pool
  support if the use count ever goes to zero"

[ The device busy test already got merged from a patch earlier, so is
  now duplicated.  ]

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  [SCSI] save command pool address of Scsi_Host
  [SCSI] fix qemu boot hang problem

10 years agoRevert "platform/x86/toshiba-apci.c possible bad if test?"
Matthew Garrett [Wed, 20 Aug 2014 15:18:18 +0000 (08:18 -0700)]
Revert "platform/x86/toshiba-apci.c possible bad if test?"

This reverts commit bdc3ae7221213963f438faeaa69c8b4a2195f491.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
10 years agoext3: Count internal journal as bsddf overhead in ext3_statfs
Chin-Tsung Cheng [Fri, 15 Aug 2014 07:49:31 +0000 (15:49 +0800)]
ext3: Count internal journal as bsddf overhead in ext3_statfs

The journal blocks of external journal device should not
be counted as overhead.

Signed-off-by: Chin-Tsung Cheng <chintzung@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
10 years agoRevert "arm64: Do not invoke audit_syscall_* functions if !CONFIG_AUDIT_SYSCALL"
Will Deacon [Tue, 19 Aug 2014 21:05:45 +0000 (22:05 +0100)]
Revert "arm64: Do not invoke audit_syscall_* functions if !CONFIG_AUDIT_SYSCALL"

For some reason, the audit patches didn't make it out of -next this
merge window, so revert our temporary hack and let the audit guys deal
with fixing up -next.

This reverts commit 2a8f45b040bcb9b2ad2845f061499d1b6f41cc7b.

Signed-off-by: Will Deacon <will.deacon@arm.com>
10 years agoarm64: mm: update max pa bits to 48
Ganapatrao Kulkarni [Thu, 14 Aug 2014 15:19:46 +0000 (20:49 +0530)]
arm64: mm: update max pa bits to 48

Now that we support 48-bit physical addressing, update MAX_PHYSMEM_BITS
accordingly.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@caviumnetworks.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
10 years agoarm64: ignore DT memreserve entries when booting in UEFI mode
Leif Lindholm [Mon, 28 Jul 2014 18:03:03 +0000 (19:03 +0100)]
arm64: ignore DT memreserve entries when booting in UEFI mode

UEFI provides its own method for marking regions to reserve, via the
memory map which is also used to initialise memblock. So when using the
UEFI memory map, ignore any memreserve entries present in the DT.

Reported-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
10 years agoarm64: configs: Enable X-Gene SATA and ethernet in defconfig
Mark Brown [Thu, 14 Aug 2014 19:57:16 +0000 (20:57 +0100)]
arm64: configs: Enable X-Gene SATA and ethernet in defconfig

Currently when run on an APM platform the ARMv8 defconfig has no viable
options for rootfs other than ramdisk which is rather limiting. Since
we already have both SATA and the bits needed for NFS root enabled we just
need to enable the relevant drivers so do that, helping enable direct
testing of upstream.

If the configuration ends up becoming too big we can consider modularising
some of the drivers and asking people to use an initramfs but for now this
is not an issue.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
10 years agoarm64: align randomized TEXT_OFFSET on 4 kB boundary
Ard Biesheuvel [Wed, 13 Aug 2014 17:53:03 +0000 (18:53 +0100)]
arm64: align randomized TEXT_OFFSET on 4 kB boundary

When booting via UEFI, the kernel Image is loaded at a 4 kB boundary and
the embedded EFI stub is executed in place. The EFI stub relocates the
Image to reside TEXT_OFFSET bytes above a 2 MB boundary, and jumps into
the kernel proper.

In AArch64, PC relative symbol references are emitted using adrp/add or
adrp/ldr pairs, where the offset into a 4 kB page is resolved using a
separate :lo12: relocation. This implicitly assumes that the code will
always be executed at the same relative offset with respect to a 4 kB
boundary, or the references will point to the wrong address.

This means we should link the kernel at a 4 kB aligned base address in
order to remain compatible with the base address the UEFI loader uses
when doing the initial load of Image. So update the code that generates
TEXT_OFFSET to choose a multiple of 4 kB.

At the same time, update the code so it chooses from the interval [0..2MB)
as the author originally intended.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
10 years agotipc: Fix build.
David S. Miller [Tue, 19 Aug 2014 18:14:02 +0000 (11:14 -0700)]
tipc: Fix build.

Missing semicolon in range check fix.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'cbq-fixes'
David S. Miller [Tue, 19 Aug 2014 17:59:12 +0000 (10:59 -0700)]
Merge branch 'cbq-fixes'

Vasily Averin says:

====================
cbq: incorrectly low bandwidth blocks limited traffic

v2: patch description changes
Fixes: f0f6ee1f70c4 ("cbq: incorrect processing of high limits")

Mainstream commit f0f6ee1f70c4 ("cbq: incorrect processing of high limits")
have side effect: if cbq bandwidth setting is less than real interface
throughput non-limited traffic can delay limited traffic for a very long time.

This happen because of q->now changes incorrectly in cbq_dequeue():
in described scenario L2T is much greater than real time delay,
and q->now gets an extra boost for each transmitted packet.

Accumulated boost prevents update q->now, and blocked class can wait
very long time until (q->now >= cl->undertime) will be true again.

More detailed problem description can be found here:
http://www.spinics.net/lists/netdev/msg292493.html

Following patches should fix the problem.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocbq: now_rt removal
Vasily Averin [Thu, 14 Aug 2014 08:27:59 +0000 (12:27 +0400)]
cbq: now_rt removal

Now q->now_rt is identical to q->now and is not required anymore.

Signed-off-by: Vasily Averin <vvs@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocbq: incorrectly low bandwidth setting blocks limited traffic
Vasily Averin [Thu, 14 Aug 2014 08:27:47 +0000 (12:27 +0400)]
cbq: incorrectly low bandwidth setting blocks limited traffic

Mainstream commit f0f6ee1f70c4 ("cbq: incorrect processing of high limits")
have side effect: if cbq bandwidth setting is less than real interface
throughput non-limited traffic can delay limited traffic for a very long time.

This happen because of q->now changes incorrectly in cbq_dequeue():
in described scenario L2T is much greater than real time delay,
and q->now gets an extra boost for each transmitted packet.

Accumulated boost prevents update q->now, and blocked class can wait
very long time until (q->now >= cl->undertime) will be true again.

To fix the problem the patch updates q->now on each cbq_update() call.
L2T-related pre-modification q->now was moved to cbq_update().

My testing confirmed that it fixes the problem and did not discover
any side-effects

Fixes: f0f6ee1f70c4 ("cbq: incorrect processing of high limits")

Signed-off-by: Vasily Averin <vvs@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoscsi: Fix qemu boot hang problem
Guenter Roeck [Sun, 10 Aug 2014 12:54:25 +0000 (05:54 -0700)]
scsi: Fix qemu boot hang problem

The latest kernel fails to boot qemu arm images when using scsi
for disk access. Boot gets stuck after the following messages.

brd: module loaded
sym53c8xx 0000:00:0c.0: enabling device (0100 -> 0103)
sym0: <895a> rev 0x0 at pci 0000:00:0c.0 irq 93
sym0: No NVRAM, ID 7, Fast-40, LVD, parity checking
sym0: SCSI BUS has been reset.
scsi host0: sym-2.2.3

Bisect points to commit 71e75c97f97a ("scsi: convert device_busy to
atomic_t"). Code inspection shows the following suspicious change
in scsi_request_fn.

out_delay:
-       if (sdev->device_busy == 0 && !scsi_device_blocked(sdev))
+       if (atomic_read(&sdev->device_busy) && !scsi_device_blocked(sdev))
blk_delay_queue(q, SCSI_QUEUE_DELAY);
}

'sdev->device_busy == 0' was replaced with 'atomic_read(&sdev->device_busy)',
meaning the logic was reversed. Changing this expression to
'!atomic_read(&sdev->device_busy)' fixes the problem.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Venkatesh Srinivas <venkateshs@google.com>
Reviewed-by: Webb Scales <webbnh@hp.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoisofs: Fix unbounded recursion when processing relocated directories
Jan Kara [Sun, 17 Aug 2014 09:49:57 +0000 (11:49 +0200)]
isofs: Fix unbounded recursion when processing relocated directories

We did not check relocated directory in any way when processing Rock
Ridge 'CL' tag. Thus a corrupted isofs image can possibly have a CL
entry pointing to another CL entry leading to possibly unbounded
recursion in kernel code and thus stack overflow or deadlocks (if there
is a loop created from CL entries).

Fix the problem by not allowing CL entry to point to a directory entry
with CL entry (such use makes no good sense anyway) and by checking
whether CL entry doesn't point to itself.

CC: stable@vger.kernel.org
Reported-by: Chris Evans <cevans@google.com>
Signed-off-by: Jan Kara <jack@suse.cz>
10 years agoudf: avoid unneeded up_write when fail to add entry in ->symlink
Chao Yu [Sat, 9 Aug 2014 01:49:31 +0000 (09:49 +0800)]
udf: avoid unneeded up_write when fail to add entry in ->symlink

We have released the ->i_data_sem before invoking udf_add_entry(),
so in following error path, we should not release this lock again.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jan Kara <jack@suse.cz>
10 years agoMAINTAINERS: add maintainer for ACPI parts of I2C
Wolfram Sang [Tue, 19 Aug 2014 15:08:35 +0000 (10:08 -0500)]
MAINTAINERS: add maintainer for ACPI parts of I2C

Mika has done great work in that field, so let people know.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>