Pull HID update from Jiri Kosina:

 - fixes for several bugs in incorrect allocations of buffers by David
   Herrmann and Benjamin Tissoires.

 - support for a few new device IDs by Archana Patni, Benjamin
   Tissoires, Huei-Horng Yo, Reyad Attiyat and Yufeng Shen

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: hyperv: make sure input buffer is big enough
  HID: Bluetooth: hidp: make sure input buffers are big enough
  HID: hid-sensor-hub: quirk for STM Sensor hub
  HID: apple: add Apple wireless keyboard 2011 JIS model support
  HID: fix buffer allocations
  HID: multitouch: add FocalTech FTxxxx support
  HID: microsoft: Add ID's for Surface Type/Touch Cover 2
  HID: usbhid: quirk for CY-TM75 75 inch Touch Overlay

Pull networking fixes from David Miller:

 1) kvaser CAN driver has fixed limits of some of it's table, validate
    that we won't exceed those limits at probe time.  Fix from Olivier
    Sobrie.

 2) Fix rtl8192ce disabling interrupts for too long, from Olivier
    Langlois.

 3) Fix botched shift in ath5k driver, from Dan Carpenter.

 4) Fix corruption of deferred packets in TIPC, from Erik Hugne.

 5) Fix newlink error path in macvlan driver, from Cong Wang.

 6) Fix netpoll deadlock in bonding, from Ding Tianhong.

 7) Handle GSO packets properly in forwarding path when fragmentation is
    necessary on egress, from Florian Westphal.

 8) Fix axienet build errors, from Michal Simek.

 9) Fix refcounting of ubufs on tx in vhost net driver, from Michael S
    Tsirkin.

10) Carrier status isn't set properly in hyperv driver, from Haiyang
    Zhang.

11) Missing pci_disable_device() in tulip_remove_one), from Ingo Molnar.

12) AF_PACKET qdisc bypass mode doesn't adhere to driver provided TX
    queue selection method.  Add a fallback method mechanism to fix this
    bug, from Daniel Borkmann.

13) Fix regression in link local route handling on GRE tunnels, from
    Nicolas Dichtel.

14) Bonding can assign dup aggregator IDs in some sequences of
    configuration, fix by making the allocation counter per-bond instead
    of global.  From Jiri Bohac.

15) sctp_connectx() needs compat translations, from Daniel Borkmann.

16) Fix of_mdio PHY interrupt parsing, from Ben Dooks

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (62 commits)
  MAINTAINERS: add entry for the PHY library
  of_mdio: fix phy interrupt passing
  net: ethernet: update dependency and help text of mvneta
  NET: fec: only enable napi if we are successful
  af_packet: remove a stray tab in packet_set_ring()
  net: sctp: fix sctp_connectx abi for ia32 emulation/compat mode
  ipv4: fix counter in_slow_tot
  irtty-sir.c: Do not set_termios() on irtty_close()
  bonding: 802.3ad: make aggregator_identifier bond-private
  usbnet: remove generic hard_header_len check
  gre: add link local route when local addr is any
  batman-adv: fix potential kernel paging error for unicast transmissions
  batman-adv: avoid double free when orig_node initialization fails
  batman-adv: free skb on TVLV parsing success
  batman-adv: fix TT CRC computation by ensuring byte order
  batman-adv: fix potential orig_node reference leak
  batman-adv: avoid potential race condition when adding a new neighbour
  batman-adv: properly check pskb_may_pull return value
  batman-adv: release vlan object after checking the CRC
  batman-adv: fix TT-TVLV parsing on OGM reception
  ...

Pull ARM fixes from Russell King:
 "A range of ARM fixes.  Biggest change is the stage-2 attributes used
  for for hyp mode which were wrong.  I've killed some bits in a couple
  of DT files which turned out not to be required, and a few other
  fixes.

  One fix touches code outside of arch/arm, which is related to sorting
  out the DMA masks correctly.  There is a long standing issue with the
  conversion from PFNs to addresses where people assume that shifting an
  unsigned long left by PAGE_SHIFT results in a correct address.  This
  is not the case with C: the integer promotion happens at assignment
  after evaluation.  This fixes the recently introduced dma_max_pfn()
  function, but there's a number of other places where we try this
  directly on an unsigned long in the mm code"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 7957/1: add DSB after icache flush in __flush_icache_all()
  Fix uses of dma_max_pfn() when converting to a limiting address
  ARM: 7955/1: spinlock: ensure we have a compiler barrier before sev
  ARM: 7953/1: mm: ensure TLB invalidation is complete before enabling MMU
  ARM: 7952/1: mm: Fix the memblock allocation for LPAE machines
  ARM: 7950/1: mm: Fix stage-2 device memory attributes
  ARM: dts: fix spdif pinmux configuration

Pull jfs fix from David Kleikamp:
 "Another ACL regression. This one more subtle"

* tag 'jfs-3.14-rc4' of git://github.com/kleikamp/linux-shaggy:
  jfs: set i_ctime when setting ACL

The PHY library has been subject to some changes, new drivers and DT
interactions over the past few months. Add myself as a maintainer for
the core PHY library parts and drivers. Make sure the PHY library entry
also covers the Device Tree files which have a close interaction with
the MDIO bus, PHY connection and Ethernet PHY mode parsing.

CC: Grant Likely <grant.likely@linaro.org>
CC: Shaohui Xie <shaohui.xie@freescale.com>
CC: Andy Fleming <afleming@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The of_mdiobus_register_phy() is not setting phy->irq thus causing
some drivers to incorrectly assume that the PHY does not have an
IRQ associated with it. Not only do some drivers report no IRQ
they do not install an interrupt handler for the PHY.

Simplify the code setting irq and set the phy->irq at the same
time so that we cover the following issues, which should cover
all the cases the code will find:

- Set phy->irq if node has irq property and mdio->irq is NULL
- Set phy->irq if node has no irq and mdio->irq is not NULL
- Leave phy->irq as PHY_POLL default if none of the above

This fixes the issue:
 net eth0: attached PHY 1 (IRQ -1) to driver Micrel KSZ8041RNLI

to the correct:
 net eth0: attached PHY 1 (IRQ 416) to driver Micrel KSZ8041RNLI
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

With the introduction of the support for Armada 375 and Armada 38x,
the hidden Kconfig option MACH_ARMADA_370_XP is being renamed to
MACH_MVEBU_V7. Therefore, the dependency that was used for the mvneta
driver can no longer work. This commit replaces this dependency by a
dependency on PLAT_ORION, which is used similarly for the mv643xx_eth
driver.

In addition to this, it takes this opportunity to adjust the
description and help text to indicate that the driver can is also used
for Armada 38x. Note that Armada 375 cannot use this driver as it has
a completely different networking unit, which will require a separate
driver.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

If napi is left enabled after a failed attempt to bring the interface
up, we BUG:

fec 2188000.ethernet eth0: no PHY, assuming direct connection to switch
libphy: PHY fixed-0:00 not found
fec 2188000.ethernet eth0: could not attach to PHY
------------[ cut here ]------------
kernel BUG at include/linux/netdevice.h:502!
Internal error: Oops - BUG: 0 [#1] SMP ARM
...
PC is at fec_enet_open+0x4d0/0x500
LR is at __dev_open+0xa4/0xfc

Only enable napi after we are past all the failure paths.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

At first glance it looks like there is a missing curly brace but
actually the code works the same either way.  I have adjusted the
indenting but left the code the same.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

John W. Linville says:

====================
Please pull this batch of fixes intended for the 3.14 stream...

For the iwlwifi one, Emmanuel says:

"As explicitly written in the commit message, we prefer to disable Tx
AMPDU on NICs supported by iwldvm. This feature gives a big boost in
Tx performance, but the firmware is buggy and we can't rely on it.
Our hope is that most of the users out there want wifi to surf on
the web which means that they care more for Rx traffic than for Tx.
People who want to enable it can do so with the help of a module
parameter."

On top of that...

Dan Carpenter fixes a typo/thinko in ath5k.

Olivier Langlois fixes a couple of rtlwifi issues, one which leaves
IRQs disabled too long (causing a variety of problems elsewhere),
and one which fixes an incorrect return code when failing to enable
the NIC.

Russell King fixes a NULL pointer dereference in hostap.

Stanislaw Gruszka fixes a DMA coherence issue in the rtl8187 driver.

Please let me know if there are problems!
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

SCTP's sctp_connectx() abi breaks for 64bit kernels compiled with 32bit
emulation (e.g. ia32 emulation or x86_x32). Due to internal usage of
'struct sctp_getaddrs_old' which includes a struct sockaddr pointer,
sizeof(param) check will always fail in kernel as the structure in
64bit kernel space is 4bytes larger than for user binaries compiled
in 32bit mode. Thus, applications making use of sctp_connectx() won't
be able to run under such circumstances.

Introduce a compat interface in the kernel to deal with such
situations by using a 'struct compat_sctp_getaddrs_old' structure
where user data is copied into it, and then sucessively transformed
into a 'struct sctp_getaddrs_old' structure with the help of
compat_ptr(). That fixes sctp_connectx() abi without any changes
needed in user space, and lets the SCTP test suite pass when compiled
in 32bit and run on 64bit kernels.

Fixes: f9c67811 ("sctp: Fix regression introduced by new sctp_connectx api")
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>

Included changes:
- fix soft-interface MTU computation
- fix bogus pointer mangling when parsing the TT-TVLV
  container. This bug led to a wrong memory access.
- fix memory leak by properly releasing the VLAN object
  after CRC check
- properly check pskb_may_pull() return value
- avoid potential race condition while adding new neighbour
- fix potential memory leak by removing all the references
  to the orig_node object in case of initialization failure
- fix the TT CRC computation by ensuring that every node uses
  the same byte order when hosts with different endianess are
  part of the same network
- fix severe memory leak by freeing skb after a successful
  TVLV parsing
- avoid potential double free when orig_node initialization
  fails
- fix potential kernel paging error caused by the usage of
  the old value of skb->data after skb reallocation
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull ext4 fixes from Ted Ts'o:
 "Miscellaneous ext4 bug fixes for v3.14"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  jbd2: fix use after free in jbd2_journal_start_reserved()
  ext4: don't leave i_crtime.tv_sec uninitialized
  ext4: fix online resize with a non-standard blocks per group setting
  ext4: fix online resize with very large inode tables
  ext4: don't try to modify s_flags if the the file system is read-only
  ext4: fix error paths in swap_inode_boot_loader()
  ext4: fix xfstest generic/299 block validity failures

If start_this_handle() fails then it leads to a use after free of
"handle".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org

Add DSB after icache flush to complete the cache maintenance operation.
Signed-off-by: Vinayak Kale <vkale@apm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

We must use a 64-bit for this, otherwise overflowed bits get lost, and
that can result in a lower than intended value set.

Fixes: 8e0cb8a1 ("ARM: 7797/1: mmc: Use dma_max_pfn(dev) helper for bounce_limit calculations")
Fixes: 7d35496d ("ARM: 7796/1: scsi: Use dma_max_pfn(dev) helper for bounce_limit calculations")
Tested-Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

since commit 89aef892("ipv4: Delete routing cache."), the counter
in_slow_tot can't work correctly.

The counter in_slow_tot increase by one when fib_lookup() return successfully
in ip_route_input_slow(), but actually the dst struct maybe not be created and
cached, so we can increase in_slow_tot after the dst struct is created.
Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull Ceph fixes from Sage Weil:
 "We have some patches fixing up ACL support issues from Zheng and
  Guangliang and a mount option to enable/disable this support.  (These
  fixes were somewhat delayed by the Chinese holiday.)

  There is also a small fix for cached readdir handling when directories
  are fragmented"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: fix __dcache_readdir()
  ceph: add acl, noacl options for cephfs mount
  ceph: make ceph_forget_all_cached_acls() static inline
  ceph: add missing init_acl() for mkdir() and atomic_open()
  ceph: fix ceph_set_acl()
  ceph: fix ceph_removexattr()
  ceph: remove xattr when null value is given to setxattr()
  ceph: properly handle XATTR_CREATE and XATTR_REPLACE

Pull CIFS fixes from Steve French:
 "Three cifs fixes, the most important fixing the problem with passing
  bogus pointers with writev (CVE-2014-0069).

  Two additional cifs fixes are still in review (including the fix for
  an append problem which Al also discovered)"

* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Fix too big maxBuf size for SMB3 mounts
  cifs: ensure that uncached writes handle unmapped areas correctly
  [CIFS] Fix cifsacl mounts over smb2 to not call cifs

When FS-Cache allocates an object, the following sequence of events can
occur:

 -->fscache_alloc_object()
    -->cachefiles_alloc_object() [via cache->ops->alloc_object]
    <--[returns new object]
    -->fscache_attach_object()
    <--[failed]
    -->cachefiles_put_object() [via cache->ops->put_object]
       -->fscache_object_destroy()
          -->fscache_objlist_remove()
             -->rb_erase() to remove the object from fscache_object_list.

resulting in a crash in the rbtree code.

The problem is that the object is only added to fscache_object_list on
the success path of fscache_attach_object() where it calls
fscache_objlist_add().

So if fscache_attach_object() fails, the object won't have been added to
the objlist rbtree.  We do, however, unconditionally try to remove the
object from the tree.

Thanks to NeilBrown for finding this and suggesting this solution.
Reported-by: NeilBrown <neilb@suse.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: (a customer of) NeilBrown <neilb@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

This has been this way for years, and every time I stumble across it I
lose my lunch.  After coming across it for the nth time in the Coverity
results, I had to overcome the bystander effect and do something about
it.

This ignores the 79 column limit in favor of making it look like C
instead of gibberish.

The correct thing to do here would be to lose some of the indentation by
breaking this function up into several smaller ones.  I might do that at
some point if I have the stomach to look at this again.

(Also some of those overlong ternary operations would likely be more
readable as regular if's)
Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Issuing set_termios() from irtty_close() causes kernel Oops for
unplugged usb-serial devices.

Since no other tty_ldisc calls set_termios() on close and no tty driver
seem to check if tty->device_data is NULL or not on entry to set_termios(),
the only solution I can come up with is to remove the irtty_stop_receiver()
call, which only updates termios.
Signed-off-by: Tommie Gannert <tommie@gannert.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem

Pull dma-buf fix from Sumit Semwal:
 "Just some debugfs output updates.

  There's another patch related to dma-buf, but it'll get upstreamed via
  Greg KH's pull request"

* tag 'dma-buf-for-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sumits/dma-buf:
  dma-buf: update debugfs output

Pull AVR32 fixes from Hans-Christian Egtvedt.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
  avr32: add generic vga.h to Kbuild
  avr32: add generic ioremap_wc() definition in io.h
  avr32: Makefile: add '-D__linux__' flag for gcc-4.4.7 use
  avr32: fix missing module.h causing build failure in mimc200/fram.c

If directory is fragmented, readdir() read its dirfrags one by one.
After reading all dirfrags, the corresponding dentries are sorted in
(frag_t, off) order in the dcache. If dentries of a directory are all
cached, __dcache_readdir() can use the cached dentries to satisfy
readdir syscall. But when checking if a given dentry is after the
position of readdir, __dcache_readdir() compares numerical value of
frag_t directly. This is wrong, it should use ceph_frag_compare().
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>

Make the 'acl' option dependent on having ACL support compiled in.  Make
the 'noacl' option work even without it so that one can always ask it to
be off and not error out on mount when it is not supported.
Signed-off-by: Guangliang Zhao <lucienchao@gmail.com>
Signed-off-by: Sage Weil <sage@inktank.com>

Signed-off-by: Guangliang Zhao <lucienchao@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Sage Weil <sage@inktank.com>

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>

If acl is equivalent to file mode permission bits, ceph_set_acl()
needs to remove any existing acl xattr. Use __ceph_setxattr() to
handle both setting and removing acl xattr cases, it doesn't return
-ENODATA when there is no acl xattr.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>

For the setxattr request, introduce a new flag CEPH_XATTR_REMOVE
to distinguish null value case from the zero-length value case.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>

return -EEXIST if XATTR_CREATE is set and xattr alread exists.
return -ENODATA if XATTR_REPLACE is set but xattr does not exist.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>

Pull powerpc fixes from Ben Herrenschmidt:
 "Here are some more powerpc fixes for 3.14

  The main one is a nasty issue with the NUMA balancing support which
  requires a small generic change and the addition of a new accessor to
  set _PAGE_NUMA.  Both have been reviewed and acked by Mel and Rik.

  The changelog should have plenty of details but basically, without
  this fix, we get random user segfaults and/or corruptions due to
  missing TLB/hash flushes.  Aneesh series of 3 patches fixes it.

  We have some vDSO vs.  perf fixes from Anton, some small EEH fixes
  from Gavin, a ppc32 regression vs the stack overflow detector, and a
  fix for the way we handle PCIe host bridge speed settings on pseries
  (which is needed for proper operations of AMD graphics cards on
  Power8)"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/eeh: Disable EEH on reboot
  powerpc/eeh: Cleanup on eeh_subsystem_enabled
  powerpc/powernv: Rework EEH reset
  powerpc: Use unstripped VDSO image for more accurate profiling data
  powerpc: Link VDSOs at 0x0
  mm: Use ptep/pmdp_set_numa() for updating _PAGE_NUMA bit
  mm: Dirty accountable change only apply to non prot numa case
  powerpc/mm: Add new "set" flag argument to pte/pmd update function
  powerpc/pseries: Add Gen3 definitions for PCIE link speed
  powerpc/pseries: Fix regression on PCI link speed
  powerpc: Set the correct ksp_limit on ppc32 when switching to irq stack

This is not a buffer overflow in the traditional sense: we don't
overflow any *kernel* buffers, but we do mis-count the amount of data we
copy back to user space for the SYSLOG_ACTION_READ_ALL case.

In particular, if the user buffer is too small to hold everything, and
*if* there is a continuation line at just the right place, we can end up
giving the user more data than he asked for.

The reason is that we first count up the number of bytes all the log
records contains, then we walk the records again until we've skipped the
records at the beginning that won't fit, and then we walk the rest of
the records and copy them to the user space buffer.

And in between that "skip the initial records that won't fit" and the
"copy the records that *will* fit to user space", we reset the 'prev'
variable that contained the record information for the last record not
copied.  That meant that when we started copying to user space, we now
had a different character count than what we had originally calculated
in the first record walk-through.

The fix is to simply not clear the 'prev' flags value (in both cases
where we had the same logic: syslog_print_all and kmsg_dump_get_buffer:
the latter is used for pstore-like dumping)
Reported-and-tested-by: Debabrata Banerjee <dbanerje@akamai.com>
Acked-by: Kay Sievers <kay@vrfy.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

We need at least HID_MAX_BUFFER_SIZE (4096) bytes as input buffer. HID
core depends on this as it requires every input report to be at least as
big as advertised.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

HID core expects the input buffers to be at least of size 4096
(HID_MAX_BUFFER_SIZE). Other sizes will result in buffer-overflows if an
input-report is smaller than advertised. We could, like i2c, compute the
biggest report-size instead of using HID_MAX_BUFFER_SIZE, but this will
blow up if report-descriptors are changed after ->start() has been called.
So lets be safe and just use the biggest buffer we have.

Note that this adds an additional copy to the HIDP input path. If there is
a way to make sure the skb-buf is big enough, we should use that instead.

The best way would be to make hid-core honor the @size argument, though,
that sounds easier than it is. So lets just fix the buffer-overflows for
now and afterwards look for a faster way for all transport drivers.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

aggregator_identifier is used to assign unique aggregator identifiers
to aggregators of a bond during device enslaving.

aggregator_identifier is currently a global variable that is zeroed in
bond_3ad_initialize().

This sequence will lead to duplicate aggregator identifiers for eth1 and eth3:

create bond0
change bond0 mode to 802.3ad
enslave eth0 to bond0 		//eth0 gets agg id 1
enslave eth1 to bond0 		//eth1 gets agg id 2
create bond1
change bond1 mode to 802.3ad
enslave eth2 to bond1		//aggregator_identifier is reset to 0
				//eth2 gets agg id 1
enslave eth3 to bond0 		//eth3 gets agg id 2

Fix this by making aggregator_identifier private to the bond.
Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Acked-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch removes a generic hard_header_len check from the usbnet
module that is causing dropped packages under certain circumstances
for devices that send rx packets that cross urb boundaries.

One example is the AX88772B which occasionally send rx packets that
cross urb boundaries where the remaining partial packet is sent with
no hardware header. When the buffer with a partial packet is of less
number of octets than the value of hard_header_len the buffer is
discarded by the usbnet module.

With AX88772B this can be reproduced by using ping with a packet
size between 1965-1976.

The bug has been reported here:

https://bugzilla.kernel.org/show_bug.cgi?id=29082

This patch introduces the following changes:
- Removes the generic hard_header_len check in the rx_complete
  function in the usbnet module.
- Introduces a ETH_HLEN check for skbs that are not cloned from
  within a rx_fixup callback.
- For safety a hard_header_len check is added to each rx_fixup
  callback function that could be affected by this change.
  These extra checks could possibly be removed by someone
  who has the hardware to test.
- Removes a call to dev_kfree_skb_any() and instead utilizes the
  dev->done list to queue skbs for cleanup.

The changes place full responsibility on the rx_fixup callback
functions that clone skbs to only pass valid skbs to the
usbnet_skb_return function.
Signed-off-by: Emil Goode <emilgoode@gmail.com>
Reported-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This bug was reported by Steinar H. Gunderson and was introduced by commit
f7cb8886 ("sit/gre6: don't try to add the same route two times").

root@morgental:~# ip tunnel add foo mode gre remote 1.2.3.4 ttl 64
root@morgental:~# ip link set foo up mtu 1468
root@morgental:~# ip -6 route show dev foo
fe80::/64  proto kernel  metric 256

but after the above commit, no such route shows up.

There is no link local route because dev->dev_addr is 0 (because local ipv4
address is 0), hence no link local address is configured.

In this scenario, the link local address is added manually: 'ip -6 addr add
fe80::1 dev foo' and because prefix is /128, no link local route is added by the
kernel.

Even if the right things to do is to add the link local address with a /64
prefix, we need to restore the previous behavior to avoid breaking userpace.
Reported-by: Steinar H. Gunderson <sesse@samfundet.no>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>