Commit Graph

635406 Commits

Author SHA1 Message Date
Dan Carpenter a0f1d21c1c KVM: use after free in kvm_ioctl_create_device()
We should move the ops->destroy(dev) after the list_del(&dev->vm_node)
so that we don't use "dev" after freeing it.

Fixes: a28ebea2ad ("KVM: Protect device ops->create and list_add with kvm->lock")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-12-01 16:10:50 +01:00
Radim Krčmář 0f4828a1da KVM/ARM updates for v4.9-rc7
- Do not call kvm_notify_acked for PPIs
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Merge tag 'kvm-arm-for-4.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm

KVM/ARM updates for v4.9-rc7

- Do not call kvm_notify_acked for PPIs
2016-12-01 14:56:34 +01:00
Stephane Grosjean f00b534ded can: peak: Add support for PCAN-USB X6 USB interface
This adds support for PEAK-System PCAN-USB X6 USB to CAN interface.

The CAN FD adapter PCAN-USB X6 allows the connection of up to 6 CAN FD
or CAN networks to a computer via USB. The interface is installed in an
aluminum profile casing and is shipped in versions with D-Sub connectors
or M12 circular connectors.

The PCAN-USB X6 registers in the USB sub-system as if 3x PCAN-USB-Pro FD
adapters were plugged. So, this patch:

- updates the PEAK_USB entry of the corresponding Kconfig file
- defines and adds the device id. of the PCAN-USB X6 (0x0014) into the
  table of supported device ids
- defines and adds the new software structure implementing the PCAN-USB X6,
  which is obviously a clone of the software structure implementing the
  PCAN-USB Pro FD.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2016-12-01 14:12:20 +01:00
Stephane Grosjean fe5b40642f can: peak: Fix bittiming fields size in bits
This fixes the bitimings fields ranges supported by all the CAN-FD USB
interfaces of the PEAK-System CAN-FD adapters.

Very first development versions of the IP core API defined smaller TSGEx
and SJW fields for both nominal and data bittimings records than the
production versions. This patch fixes them by enlarging their sizes to
the actual values:

field:           old size:    fixed size:
nominal TSGEG1   6            8
nominal TSGEG2   4            7
nominal SJW      4            7
data TSGEG1      4            5
data TSGEG2      3            4
data SJW         2            4

Note that this has no other consequences than offering larger choice to
bitrate encoding.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2016-12-01 14:11:25 +01:00
Linus Torvalds 43c4f67c96 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "7 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: fix false-positive WARN_ON() in truncate/invalidate for hugetlb
  kasan: support use-after-scope detection
  kasan: update kasan_global for gcc 7
  lib/debugobjects: export for use in modules
  zram: fix unbalanced idr management at hot removal
  thp: fix corner case of munlock() of PTE-mapped THPs
  mm, thp: propagation of conditional compilation in khugepaged.c
2016-11-30 16:33:41 -08:00
Kirill A. Shutemov 5cbc198ae0 mm: fix false-positive WARN_ON() in truncate/invalidate for hugetlb
Hugetlb pages have ->index in size of the huge pages (PMD_SIZE or
PUD_SIZE), not in PAGE_SIZE as other types of pages.  This means we
cannot user page_to_pgoff() to check whether we've got the right page
for the radix-tree index.

Let's introduce page_to_index() which would return radix-tree index for
given page.

We will be able to get rid of this once hugetlb will be switched to
multi-order entries.

Fixes: fc127da085 ("truncate: handle file thp")
Link: http://lkml.kernel.org/r/20161123093053.mjbnvn5zwxw5e6lk@black.fi.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Doug Nelson <doug.nelson@intel.com>
Tested-by: Doug Nelson <doug.nelson@intel.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: <stable@vger.kernel.org>	[4.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-30 16:32:52 -08:00
Dmitry Vyukov 828347f8f9 kasan: support use-after-scope detection
Gcc revision 241896 implements use-after-scope detection.  Will be
available in gcc 7.  Support it in KASAN.

Gcc emits 2 new callbacks to poison/unpoison large stack objects when
they go in/out of scope.  Implement the callbacks and add a test.

[dvyukov@google.com: v3]
  Link: http://lkml.kernel.org/r/1479998292-144502-1-git-send-email-dvyukov@google.com
Link: http://lkml.kernel.org/r/1479226045-145148-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: <stable@vger.kernel.org>	[4.0+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-30 16:32:52 -08:00
Dmitry Vyukov 045d599a28 kasan: update kasan_global for gcc 7
kasan_global struct is part of compiler/runtime ABI.  gcc revision
241983 has added a new field to kasan_global struct.  Update kernel
definition of kasan_global struct to include the new field.

Without this patch KASAN is broken with gcc 7.

Link: http://lkml.kernel.org/r/1479219743-28682-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: <stable@vger.kernel.org>	[4.0+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-30 16:32:52 -08:00
Chris Wilson f8ff04e2be lib/debugobjects: export for use in modules
Drivers, or other modules, that use a mixture of objects (especially
objects embedded within other objects) would like to take advantage of
the debugobjects facilities to help catch misuse.  Currently, the
debugobjects interface is only available to builtin drivers and requires
a set of EXPORT_SYMBOL_GPL for use by modules.

I am using the debugobjects in i915.ko to try and catch some invalid
operations on embedded objects.  The problem currently only presents
itself across module unload so forcing i915 to be builtin is not an
option.

Link: http://lkml.kernel.org/r/20161122143039.6433-1-chris@chris-wilson.co.uk
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: "Du, Changbin" <changbin.du@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-30 16:32:52 -08:00
Takashi Iwai 529e71e164 zram: fix unbalanced idr management at hot removal
The zram hot removal code calls idr_remove() even when zram_remove()
returns an error (typically -EBUSY).  This results in a leftover at the
device release, eventually leading to a crash when the module is
reloaded.

As described in the bug report below, the following procedure would
cause an Oops with zram:

 - provision three zram devices via modprobe zram num_devices=3
 - configure a size for each device
   + echo "1G" > /sys/block/$zram_name/disksize
 - mkfs and mount zram0 only
 - attempt to hot remove all three devices
   + echo 2 > /sys/class/zram-control/hot_remove
   + echo 1 > /sys/class/zram-control/hot_remove
   + echo 0 > /sys/class/zram-control/hot_remove
     - zram0 removal fails with EBUSY, as expected
 - unmount zram0
 - try zram0 hot remove again
   + echo 0 > /sys/class/zram-control/hot_remove
     - fails with ENODEV (unexpected)
 - unload zram kernel module
   + completes successfully
 - zram0 device node still exists
 - attempt to mount /dev/zram0
   + mount command is killed
   + following BUG is encountered

 BUG: unable to handle kernel paging request at ffffffffa0002ba0
 IP: get_disk+0x16/0x50
 Oops: 0000 [#1] SMP
 CPU: 0 PID: 252 Comm: mount Not tainted 4.9.0-rc6 #176
 Call Trace:
   exact_lock+0xc/0x20
   kobj_lookup+0xdc/0x160
   get_gendisk+0x2f/0x110
   __blkdev_get+0x10c/0x3c0
   blkdev_get+0x19d/0x2e0
   blkdev_open+0x56/0x70
   do_dentry_open.isra.19+0x1ff/0x310
   vfs_open+0x43/0x60
   path_openat+0x2c9/0xf30
   do_filp_open+0x79/0xd0
   do_sys_open+0x114/0x1e0
   SyS_open+0x19/0x20
   entry_SYSCALL_64_fastpath+0x13/0x94

This patch adds the proper error check in hot_remove_store() not to call
idr_remove() unconditionally.

Fixes: 17ec4cd985 ("zram: don't call idr_remove() from zram_remove()")
Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=1010970
Link: http://lkml.kernel.org/r/20161121132140.12683-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: David Disseldorp <ddiss@suse.de>
Reported-by: David Disseldorp <ddiss@suse.de>
Tested-by: David Disseldorp <ddiss@suse.de>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: <stable@vger.kernel.org>    [4.4+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-30 16:32:52 -08:00
Kirill A. Shutemov 655548bf62 thp: fix corner case of munlock() of PTE-mapped THPs
The following program triggers BUG() in munlock_vma_pages_range():

	// autogenerated by syzkaller (http://github.com/google/syzkaller)
	#include <sys/mman.h>

	int main()
	{
	  mmap((void*)0x20105000ul, 0xc00000ul, 0x2ul, 0x2172ul, -1, 0);
	  mremap((void*)0x201fd000ul, 0x4000ul, 0xc00000ul, 0x3ul, 0x203f0000ul);
	  return 0;
	}

The test-case constructs the situation when munlock_vma_pages_range()
finds PTE-mapped THP-head in the middle of page table and, by mistake,
skips HPAGE_PMD_NR pages after that.

As result, on the next iteration it hits the middle of PMD-mapped THP
and gets upset seeing mlocked tail page.

The solution is only skip HPAGE_PMD_NR pages if the THP was mlocked
during munlock_vma_page().  It would guarantee that the page is
PMD-mapped as we never mlock PTE-mapeed THPs.

Fixes: e90309c9f7 ("thp: allow mlocked THP again")
Link: http://lkml.kernel.org/r/20161115132703.7s7rrgmwttegcdh4@black.fi.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: syzkaller <syzkaller@googlegroups.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>	[4.5+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-30 16:32:52 -08:00
Jérémy Lefaure e1465d125d mm, thp: propagation of conditional compilation in khugepaged.c
Commit b46e756f5e ("thp: extract khugepaged from mm/huge_memory.c")
moved code from huge_memory.c to khugepaged.c.  Some of this code should
be compiled only when CONFIG_SYSFS is enabled but the condition around
this code was not moved into khugepaged.c.

The result is a compilation error when CONFIG_SYSFS is disabled:

  mm/built-in.o: In function `khugepaged_defrag_store': khugepaged.c:(.text+0x2d095): undefined reference to `single_hugepage_flag_store'
  mm/built-in.o: In function `khugepaged_defrag_show': khugepaged.c:(.text+0x2d0ab): undefined reference to `single_hugepage_flag_show'

This commit adds the #ifdef CONFIG_SYSFS around the code related to
sysfs.

Link: http://lkml.kernel.org/r/20161114203448.24197-1-jeremy.lefaure@lse.epita.fr
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-30 16:32:52 -08:00
Dave Airlie 83fb8b0555 Merge tag 'drm-misc-fixes-2016-11-30' of git://anongit.freedesktop.org/git/drm-misc into drm-fixes
single drm fix.

* tag 'drm-misc-fixes-2016-11-30' of git://anongit.freedesktop.org/git/drm-misc:
  drm: Don't call drm_for_each_crtc with a non-KMS driver
2016-12-01 10:00:14 +10:00
Linus Torvalds f513581c35 Two small fixes for MIPI PLLs on sunxi devices and a build fix
for a Broadcom clk driver having unmet dependencies.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "Two small fixes for MIPI PLLs on sunxi devices and a build fix for a
  Broadcom clk driver having unmet dependencies"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: bcm: Fix unmet Kconfig dependencies for CLK_BCM_63XX
  clk: sunxi-ng: enable so-said LDOs for A33 SoC's pll-mipi clock
  clk: sunxi-ng: sun6i-a31: Enable PLL-MIPI LDOs when ungating it
2016-11-30 15:15:49 -08:00
Jeremy Linton 4c9456df88 arm64: dts: juno: Correct PCI IO window
The PCIe root complex on Juno translates the MMIO mapped
at 0x5f800000 to the PIO address range starting at 0
(which is common because PIO addresses are generally < 64k).
Correct the DT to reflect this.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-11-30 23:49:16 +01:00
Jason Wang aa196eed3d macvtap: handle ubuf refcount correctly when meet errors
We trigger uarg->callback() immediately after we decide do datacopy
even if caller want to do zerocopy. This will cause the callback
(vhost_net_zerocopy_callback) decrease the refcount. But when we meet
an error afterwards, the error handling in vhost handle_tx() will try
to decrease it again. This is wrong and fix this by delay the
uarg->callback() until we're sure there's no errors.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 15:06:02 -05:00
Jason Wang af1cc7a2b8 tun: handle ubuf refcount correctly when meet errors
We trigger uarg->callback() immediately after we decide do datacopy
even if caller want to do zerocopy. This will cause the callback
(vhost_net_zerocopy_callback) decrease the refcount. But when we meet
an error afterwards, the error handling in vhost handle_tx() will try
to decrease it again. This is wrong and fix this by delay the
uarg->callback() until we're sure there's no errors.

Reported-by: wangyunjian <wangyunjian@huawei.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 15:06:01 -05:00
Grygorii Strashko 4ccfd6383a net: ethernet: ti: cpsw: fix ASSERT_RTNL() warning during resume
netif_set_real_num_tx/rx_queues() are required to be called with rtnl_lock
taken, otherwise ASSERT_RTNL() warning will be triggered - which happens
now during System resume from suspend:
cpsw_resume()
|- cpsw_ndo_open()
  |- netif_set_real_num_tx/rx_queues()
     |- ASSERT_RTNL();

Hence, fix it by surrounding cpsw_ndo_open() by rtnl_lock/unlock() calls.

Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Fixes: commit e05107e6b7 ("net: ethernet: ti: cpsw: add multi queue support")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Tested-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 14:59:08 -05:00
Linus Torvalds e2b588ab60 pwm: Fixes for v4.9
This contains two one-line fixes for issues that were introduced in
 v4.9-rc1.
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Merge tag 'pwm/for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm fixes from Thierry Reding:
 "This contains two one-line fixes for issues that were introduced in
  v4.9-rc1"

* tag 'pwm/for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: Fix device reference leak
  pwm: meson: Add missing spin_lock_init()
2016-11-30 11:53:50 -08:00
Josef Bacik e2d2afe15e bpf: fix states equal logic for varlen access
If we have a branch that looks something like this

int foo = map->value;
if (condition) {
  foo += blah;
} else {
  foo = bar;
}
map->array[foo] = baz;

We will incorrectly assume that the !condition branch is equal to the condition
branch as the register for foo will be UNKNOWN_VALUE in both cases.  We need to
adjust this logic to only do this if we didn't do a varlen access after we
processed the !condition branch, otherwise we have different ranges and need to
check the other branch as well.

Fixes: 484611357c ("bpf: allow access into map value arrays")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 14:50:52 -05:00
Hongxu Jia 17a49cd549 netfilter: arp_tables: fix invoking 32bit "iptable -P INPUT ACCEPT" failed in 64bit kernel
Since 09d9686047 ("netfilter: x_tables: do compat validation via
translate_table"), it used compatr structure to assign newinfo
structure.  In translate_compat_table of ip_tables.c and ip6_tables.c,
it used compatr->hook_entry to replace info->hook_entry and
compatr->underflow to replace info->underflow, but not do the same
replacement in arp_tables.c.

It caused invoking 32-bit "arptbale -P INPUT ACCEPT" failed in 64bit
kernel.
--------------------------------------
root@qemux86-64:~# arptables -P INPUT ACCEPT
root@qemux86-64:~# arptables -P INPUT ACCEPT
ERROR: Policy for `INPUT' offset 448 != underflow 0
arptables: Incompatible with this kernel
--------------------------------------

Fixes: 09d9686047 ("netfilter: x_tables: do compat validation via translate_table")
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-11-30 20:50:23 +01:00
David S. Miller 0fcba2894c wireless-drivers fixes for 4.9
mwifiex
 
 * properly terminate SSIDs so that uninitalised memory is not printed
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Merge tag 'wireless-drivers-for-davem-2016-11-29' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for 4.9

mwifiex

* properly terminate SSIDs so that uninitalised memory is not printed
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 14:33:44 -05:00
David S. Miller 7752f72748 Merge branch 'l2tp-fixes'
Guillaume Nault says:

====================
l2tp: fixes for l2tp_ip and l2tp_ip6 socket handling

This series addresses problems found while working on commit 32c231164b
("l2tp: fix racy SOCK_ZAPPED flag check in l2tp_ip{,6}_bind()").

The first three patches fix races in socket's connect, recv and bind
operations. The last two ones fix scenarios where l2tp fails to
correctly lookup its userspace sockets.

Apart from the last patch, which is l2tp_ip6 specific, every patch
fixes the same problem in the L2TP IPv4 and IPv6 code.

All problems fixed by this series exist since the creation of the
l2tp_ip and l2tp_ip6 modules.

Changes since v1:
  * Patch #3: fix possible uninitialised use of 'ret' in l2tp_ip_bind().
====================

Acked-by: James Chapman <jchapman@katalix.com>
2016-11-30 14:14:09 -05:00
Guillaume Nault 31e2f21fb3 l2tp: fix address test in __l2tp_ip6_bind_lookup()
The '!(addr && ipv6_addr_equal(addr, laddr))' part of the conditional
matches if addr is NULL or if addr != laddr.
But the intend of __l2tp_ip6_bind_lookup() is to find a sockets with
the same address, so the ipv6_addr_equal() condition needs to be
inverted.

For better clarity and consistency with the rest of the expression, the
(!X || X == Y) notation is used instead of !(X && X != Y).

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 14:14:08 -05:00
Guillaume Nault df90e68861 l2tp: fix lookup for sockets not bound to a device in l2tp_ip
When looking up an l2tp socket, we must consider a null netdevice id as
wild card. There are currently two problems caused by
__l2tp_ip_bind_lookup() not considering 'dif' as wild card when set to 0:

  * A socket bound to a device (i.e. with sk->sk_bound_dev_if != 0)
    never receives any packet. Since __l2tp_ip_bind_lookup() is called
    with dif == 0 in l2tp_ip_recv(), sk->sk_bound_dev_if is always
    different from 'dif' so the socket doesn't match.

  * Two sockets, one bound to a device but not the other, can be bound
    to the same address. If the first socket binding to the address is
    the one that is also bound to a device, the second socket can bind
    to the same address without __l2tp_ip_bind_lookup() noticing the
    overlap.

To fix this issue, we need to consider that any null device index, be
it 'sk->sk_bound_dev_if' or 'dif', matches with any other value.
We also need to pass the input device index to __l2tp_ip_bind_lookup()
on reception so that sockets bound to a device never receive packets
from other devices.

This patch fixes l2tp_ip6 in the same way.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 14:14:08 -05:00
Guillaume Nault d5e3a19093 l2tp: fix racy socket lookup in l2tp_ip and l2tp_ip6 bind()
It's not enough to check for sockets bound to same address at the
beginning of l2tp_ip{,6}_bind(): even if no socket is found at that
time, a socket with the same address could be bound before we take
the l2tp lock again.

This patch moves the lookup right before inserting the new socket, so
that no change can ever happen to the list between address lookup and
socket insertion.

Care is taken to avoid side effects on the socket in case of failure.
That is, modifications of the socket are done after the lookup, when
binding is guaranteed to succeed, and before releasing the l2tp lock,
so that concurrent lookups will always see fully initialised sockets.

For l2tp_ip, 'ret' is set to -EINVAL before checking the SOCK_ZAPPED
bit. Error code was mistakenly set to -EADDRINUSE on error by commit
32c231164b ("l2tp: fix racy SOCK_ZAPPED flag check in l2tp_ip{,6}_bind()").
Using -EINVAL restores original behaviour.

For l2tp_ip6, the lookup is now always done with the correct bound
device. Before this patch, when binding to a link-local address, the
lookup was done with the original sk->sk_bound_dev_if, which was later
overwritten with addr->l2tp_scope_id. Lookup is now performed with the
final sk->sk_bound_dev_if value.

Finally, the (addr_len >= sizeof(struct sockaddr_in6)) check has been
dropped: addr is a sockaddr_l2tpip6 not sockaddr_in6 and addr_len has
already been checked at this point (this part of the code seems to have
been copy-pasted from net/ipv6/raw.c).

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 14:14:08 -05:00
Guillaume Nault a3c18422a4 l2tp: hold socket before dropping lock in l2tp_ip{, 6}_recv()
Socket must be held while under the protection of the l2tp lock; there
is no guarantee that sk remains valid after the read_unlock_bh() call.

Same issue for l2tp_ip and l2tp_ip6.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 14:14:07 -05:00
Guillaume Nault 0382a25af3 l2tp: lock socket before checking flags in connect()
Socket flags aren't updated atomically, so the socket must be locked
while reading the SOCK_ZAPPED flag.

This issue exists for both l2tp_ip and l2tp_ip6. For IPv6, this patch
also brings error handling for __ip6_datagram_connect() failures.

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 14:14:07 -05:00
Hariprasad Shenai bb83d62fa8 cxgb4: Add PCI device ID for new adapter
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 14:11:47 -05:00
Mike Rapoport a107bf8b39 isofs: add KERN_CONT to printing of ER records
The ER records are printed without explicit log level presuming line
continuation until "\n".  After the commit 4bcc595ccd (printk:
reinstate KERN_CONT for printing continuation lines), the ER records are
printed a character per line.

Adding KERN_CONT to appropriate printk statements restores the printout
behavior.

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-30 10:41:26 -08:00
Nikita Yushchenko 80cca775cd net: fec: cache statistics while device is down
Execution 'ethtool -S' on fec device that is down causes OOPS on Vybrid
board:

Unhandled fault: external abort on non-linefetch (0x1008) at 0xe0898200
pgd = ddecc000
[e0898200] *pgd=9e406811, *pte=400d1653, *ppte=400d1453
Internal error: : 1008 [#1] SMP ARM
...

Reason of OOPS is that fec_enet_get_ethtool_stats() accesses fec
registers while IPG clock is stopped by PM.

Fix that by caching statistics in fec_enet_private. Cache is initialized
at device probe time, and updated at statistics request time if device
is up, and also just before turning device off on down path.

Additional locking is not needed, since cached statistics is accessed
either before device is registered, or under rtnl_lock().

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 12:44:40 -05:00
Haishuang Yan 17b463654f vxlan: fix a potential issue when create a new vxlan fdb entry.
vxlan_fdb_append may return error, so add the proper check,
otherwise it will cause memory leak.

Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>

Changes in v2:
  - Unnecessary to initialize rc to zero.
Acked-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 12:02:49 -05:00
Ping Cheng 2425f18081 Input: change KEY_DATA from 0x275 to 0x277
0x275 is used by KEY_FASTREVERSE.

Fixes: 488326947c ("Input: add HDMI CEC specific keycodes")
Signed-off-by: Ping Cheng <ping.cheng@wacom.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2016-11-30 08:59:26 -08:00
Daniele Di Proietto f92a80a997 openvswitch: Fix skb leak in IPv6 reassembly.
If nf_ct_frag6_gather() returns an error other than -EINPROGRESS, it
means that we still have a reference to the skb.  We should free it
before returning from handle_fragments, as stated in the comment above.

Fixes: daaa7d647f ("netfilter: ipv6: avoid nf_iterate recursion")
CC: Florian Westphal <fw@strlen.de>
CC: Pravin B Shelar <pshelar@ovn.org>
CC: Joe Stringer <joe@ovn.org>
Signed-off-by: Daniele Di Proietto <diproiettod@ovn.org>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-30 11:00:45 -05:00
Tobias Brunner a55e23864d esp6: Fix integrity verification when ESN are used
When handling inbound packets, the two halves of the sequence number
stored on the skb are already in network order.

Fixes: 000ae7b269 ("esp6: Switch to new AEAD interface")
Signed-off-by: Tobias Brunner <tobias@strongswan.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-11-30 11:10:16 +01:00
Tobias Brunner 7c7fedd51c esp4: Fix integrity verification when ESN are used
When handling inbound packets, the two halves of the sequence number
stored on the skb are already in network order.

Fixes: 7021b2e1cd ("esp4: Switch to new AEAD interface")
Signed-off-by: Tobias Brunner <tobias@strongswan.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-11-30 11:09:39 +01:00
Matthew Auld e411072d57 drm/i915: drop the struct_mutex when wedged or trying to reset
We grab the struct_mutex in intel_crtc_page_flip, but if we are wedged
or a reset is in progress we bail early but never seem to actually
release the lock.

Fixes: 7f1847ebf4 ("drm/i915: Simplify checking of GPU reset_counter in display pageflips")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161128103648.9235-1-matthew.auld@intel.com
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: <stable@vger.kernel.org> # v4.7+
(cherry picked from commit ddbb271aea)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-11-30 12:09:26 +02:00
Chris Wilson 2420489bcb drm/i915: Don't touch NULL sg on i915_gem_object_get_pages_gtt() error
On the DMA mapping error path, sg may be NULL (it has already been
marked as the last scatterlist entry), and we should avoid dereferencing
it again.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: e227330223 ("drm/i915: avoid leaking DMA mappings")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: stable@vger.kernel.org
Link: http://patchwork.freedesktop.org/patch/msgid/20161114112930.2033-1-chris@chris-wilson.co.uk
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
(cherry picked from commit b17993b7b2)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-11-30 12:07:05 +02:00
Yi Zhao 83e2d0587a xfrm_user: fix return value from xfrm_user_rcv_msg
It doesn't support to run 32bit 'ip' to set xfrm objdect on 64bit host.
But the return value is unknown for user program:

ip xfrm policy list
RTNETLINK answers: Unknown error 524

Replace ENOTSUPP with EOPNOTSUPP:

ip xfrm policy list
RTNETLINK answers: Operation not supported

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2016-11-30 10:58:53 +01:00
Michel Dänzer e94bd1736f drm: Don't call drm_for_each_crtc with a non-KMS driver
Fixes oops if userspace calls DRM_IOCTL_GET_CAP for
 DRM_CAP_PAGE_FLIP_TARGET on a non-KMS device node. (Normal userspace
doesn't do that, discovered by syzkaller)

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Fixes: f837297ad8 ("drm: Add DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags v2")
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161130083002.1520-1-michel@daenzer.net
2016-11-30 10:13:00 +01:00
Dave Airlie b14fd8efb4 Merge branch 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld into drm-fixes
Thanks for pulling the previous patch for HDLCD. Unfortunately,
yesterday Robin Murphy discovered another issue while playing with
CMA allocation sizes, which he has submitted a fix for.

* 'for-upstream/hdlcd' of git://linux-arm.org/linux-ld:
  drm: hdlcd: Fix cleanup order
2016-11-30 14:17:13 +10:00
David S. Miller f2ebf2a6ca Merge branch 'fixed-phy-phydev-leaks'
Johan Hovold says:

====================
net: fix fixed-link phydev leaks

This series fixes failures to deregister and free fixed-link phydevs
that have been registered using the of_phy_register_fixed_link()
interface.

All but two drivers currently fail to do this and this series fixes most
of them with the exception of a staging driver and the stmmac drivers
which will be fixed by follow-on patches.

Included are also a couple of fixes for related of-node leaks.

Note that all patches except the of_mdio one have been compile-tested
only.

Also note that the series is against net due to dependencies not yet in
net-next.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29 23:17:04 -05:00
Johan Hovold 881eadabe7 net: dsa: slave: fix fixed-link phydev leaks
Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on slave-setup errors and on slave destroy.

Fixes: 0d8bcdd383 ("net: dsa: allow for more complex PHY setups")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29 23:17:02 -05:00
Johan Hovold 14cab6f651 net: ethernet: ti: davinci_emac: fix fixed-link phydev and of-node leaks
Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on probe errors and on driver unbind.

Also remember to put the of-node reference on probe errors.

Fixes: 1bb6aa56bb ("net: davinci_emac: Add support for fixed-link
PHY")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29 23:17:02 -05:00
Johan Hovold c41a47678d net: ethernet: dwc_eth_qos: fix fixed-link phydev leaks
Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on probe errors and on driver unbind.

Fixes: 077742dac2 ("dwc_eth_qos: Add support for Synopsys DWC Ethernet
QoS")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29 23:17:02 -05:00
Johan Hovold 9f70eb339f net: ethernet: renesas: ravb: fix fixed-link phydev leaks
Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on initialisation errors and on device
close after having disconnected the PHY.

Fixes: b4bc88a868 ("ravb: Add fixed-link support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29 23:17:02 -05:00
Johan Hovold 16a67eb3ec net: ethernet: mediatek: fix fixed-link phydev leaks
Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on initialisation errors and on uninit.

Fixes: 0c72c50f6f ("net-next: mediatek: add fixed-phy support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29 23:17:02 -05:00
Johan Hovold 5a57a30431 net: ethernet: marvell: mvneta: fix fixed-link phydev leaks
Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on probe errors and on driver unbind.

Fixes: 83895bedee ("net: mvneta: add support for fixed links")
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29 23:17:02 -05:00
Johan Hovold 0807c4ceb8 net: ethernet: ucc_geth: fix fixed-link phydev leaks
Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on probe errors and on driver unbind.

Fixes: 87009814cd ("ucc_geth: use the new fixed PHY helpers")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29 23:17:02 -05:00
Johan Hovold 42c7004245 net: ethernet: gianfar: fix fixed-link phydev leaks
Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on probe errors and on driver unbind.

Fixes: be40364544 ("gianfar: use the new fixed PHY helpers")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29 23:17:02 -05:00