Merge tag 'pwm/for-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This release cycle's changes include mostly updates and cleanups to
  existing drivers along with a few cleanups to the core, documentation
  and device tree bindings"

* tag 'pwm/for-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: cros-ec: Fix transposed param settings
  pwm: meson: Improve PWM calculation precision
  dt-bindings: pwm: meson: Add compatible for gxbb ao PWMs
  pwm: meson: Add compatible for the gxbb ao PWMs
  pwm: sun4i: Drop legacy callbacks
  pwm: sun4i: Switch to atomic PWM
  pwm: sun4i: Improve hardware read out
  pwm: hibvt: Constify hibvt_pwm_ops
  pwm: Silently error out on EPROBE_DEFER
  pwm: Standardize document format
  pwm: bfin: Remove unneeded error message
  dt-bindings: pwm: Update STM32 timers clock names
  dt-bindings: pwm: Add R-Car M3-W device tree bindings
  pwm: tegra: Set maximum pwm clock source per SoC tapeout

Pull power supply fixes from  Reichel:
 "I have two more fixes for the power-supply subsystem:

   - two fixes for twl4030-charger"

* tag 'for-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply:
  power: supply: twl4030-charger: add deferred probing for phy and iio
  power: supply: twl4030-charger: move irq allocation to just before irqs are enabled

Pull more drm updates from Dave Airlie:
 "i915, amd and some core fixes + mediatek color support.

  Some fixes tree came in since the main pull request for rc1, primarily
  i915 and drm-misc and one amd fix. The drm core vblank regression fix
  is probably the most important thing.

  I've also added the mediatek feature pull, it wasn't that big and
  didn't look like it would have any impact outside of mediatek, in fact
  it looks to just be a single feature, and some cleanups"

* tag 'drm-fixes-for-v4.13-rc1' of git://people.freedesktop.org/~airlied/linux: (31 commits)
  drm/i915: Make DP-MST connector info work
  drm/i915/gvt: Use fence error from GVT request for workload status
  drm/i915/gvt: remove scheduler_mutex in per-engine workload_thread
  drm/i915/gvt: Revert "drm/i915/gvt: Fix possible recursive locking issue"
  drm/i915/gvt: Audit the command buffer address
  drm/i915/gvt: Fix a memory leak in intel_gvt_init_gtt()
  drm/rockchip: fix NULL check on devm_kzalloc() return value
  drm/i915/fbdev: Check for existence of ifbdev->vma before operations
  drm/radeon: Fix eDP for single-display iMac10,1 (v2)
  drm/i915: Hold RPM wakelock while initializing OA buffer
  drm/i915/cnl: Fix the CURSOR_COEFF_MASK used in DDI Vswing Programming
  drm/i915/cfl: Fix Workarounds.
  drm/i915: Avoid undefined behaviour of "u32 >> 32"
  drm/i915: reintroduce VLV/CHV PFI programming power domain workaround
  drm/i915: Fix an error checking test
  drm/i915: Disable MSI for all pre-gen5
  drm/atomic: Add missing drm_atomic_state_clear to atomic_remove_fb
  drm: vblank: Fix vblank timestamp update
  drm/i915/gvt: Make function dpy_reg_mmio_readx safe
  drm/mediatek: separate color module to fixup error memory reallocation
  ...

DRM_IOCTL_VERSION is supposed to update the name_len/date_len/desc_len
fields to user.

Fixes: 012c6741 ("switch compat_drm_version() to drm_ioctl_kernel()")
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

single r700 fix.
* 'drm-next-4.13' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: Fix eDP for single-display iMac10,1 (v2)

Pull sysctl fix from Eric Biederman:
 "A rather embarassing and hard to hit bug was merged into 4.11-rc1.

  Andrei Vagin tracked this bug now and after some staring at the code
  I came up with a fix"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  proc: Fix proc_sys_prune_dcache to hold a sb reference

Pull networking fixes from David Miller:

1) Fix 64-bit division in mlx5 IPSEC offload support, from Ilan Tayari
   and Arnd Bergmann.

2) Fix race in statistics gathering in bnxt_en driver, from Michael
   Chan.

3) Can't use a mutex in RCU reader protected section on tap driver, from
   Cong WANG.

4) Fix mdb leak in bridging code, from Eduardo Valentin.

5) Fix free of wrong pointer variable in nfp driver, from Dan Carpenter.

6) Buffer overflow in brcmfmac driver, from Arend van SPriel.

7) ioremap_nocache() return value needs to be checked in smsc911x
   driver, from Alexey Khoroshilov.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (34 commits)
  net: stmmac: revert "support future possible different internal phy mode"
  sfc: don't read beyond unicast address list
  datagram: fix kernel-doc comments
  socket: add documentation for missing elements
  smsc911x: Add check for ioremap_nocache() return code
  brcmfmac: fix possible buffer overflow in brcmf_cfg80211_mgmt_tx()
  net: hns: Bugfix for Tx timeout handling in hns driver
  net: ipmr: ipmr_get_table() returns NULL
  nfp: freeing the wrong variable
  mlxsw: spectrum_switchdev: Check status of memory allocation
  mlxsw: spectrum_switchdev: Remove unused variable
  mlxsw: spectrum_router: Fix use-after-free in route replace
  mlxsw: spectrum_router: Add missing rollback
  samples/bpf: fix a build issue
  bridge: mdb: fix leak on complete_info ptr on fail path
  tap: convert a mutex to a spinlock
  cxgb4: fix BUG() on interrupt deallocating path of ULD
  qed: Fix printk option passed when printing ipv6 addresses
  net: Fix minor code bug in timestamping.txt
  net: stmmac: Make 'alloc_dma_[rt]x_desc_resources()' look even closer
  ...

I made the mistake of upgrading my desktop to the new Fedora 26 that
comes with gcc-7.1.1.

There's nothing wrong per se that I've noticed, but I now have 1500
lines of warnings, mostly from the new format-truncation warning
triggering all over the tree.

We use 'snprintf()' and friends in a lot of places, and often know that
the numbers are fairly small (ie a controller index or similar), but gcc
doesn't know that, and sees an 'int', and thinks that it could be some
huge number.  And then complains when our buffers are not able to fit
the name for the ten millionth controller.

These warnings aren't necessarily bad per se, and we probably want to
look through them subsystem by subsystem, but at least during the merge
window they just mean that I can't even see if somebody is introducing
any *real* problems when I pull.

So warnings disabled for now.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'drm-misc-next-fixes-2017-07-10' of git://anongit.freedesktop.org/git/drm-misc into drm-next

Core Changes:
- Fix empty timestamps on hw without vlbank counter (Laurent)
- Clear atomic state before retrying ww/mutex acquisition in remove_fb (Maarten)

Driver Changes:
- rockchip: Fix incorrect NULL pointer check after allocation (Gustavo)

Cc: Gustavo A. R. Silva <garsilva@embeddedor.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

* tag 'drm-misc-next-fixes-2017-07-10' of git://anongit.freedesktop.org/git/drm-misc:
  drm/rockchip: fix NULL check on devm_kzalloc() return value
  drm/atomic: Add missing drm_atomic_state_clear to atomic_remove_fb
  drm: vblank: Fix vblank timestamp update
  DRM: Fix an incorrectly formatted table
  bridge: Fix panel-bridge error return on !panel.
  drm/rockchip: gem: add the lacks lock and trivial changes

Merge tag 'drm-intel-next-fixes-2017-07-11' of git://anongit.freedesktop.org/git/drm-intel into drm-next

drm/i915 fixes for v4.13-rc1

* tag 'drm-intel-next-fixes-2017-07-11' of git://anongit.freedesktop.org/git/drm-intel:
  drm/i915: Make DP-MST connector info work
  drm/i915/gvt: Use fence error from GVT request for workload status
  drm/i915/gvt: remove scheduler_mutex in per-engine workload_thread
  drm/i915/gvt: Revert "drm/i915/gvt: Fix possible recursive locking issue"
  drm/i915/gvt: Audit the command buffer address
  drm/i915/gvt: Fix a memory leak in intel_gvt_init_gtt()
  drm/i915/fbdev: Check for existence of ifbdev->vma before operations
  drm/i915: Hold RPM wakelock while initializing OA buffer
  drm/i915/cnl: Fix the CURSOR_COEFF_MASK used in DDI Vswing Programming
  drm/i915/cfl: Fix Workarounds.
  drm/i915: Avoid undefined behaviour of "u32 >> 32"
  drm/i915: reintroduce VLV/CHV PFI programming power domain workaround
  drm/i915: Fix an error checking test
  drm/i915: Disable MSI for all pre-gen5
  drm/i915/gvt: Make function dpy_reg_mmio_readx safe
  drm/i915/gvt: Don't read ADPA_CRT_HOTPLUG_MONITOR from host
  drm/i915/gvt: Set initial PORT_CLK_SEL vreg for BDW
  drm/i915/gvt: Fix inconsistent locks holding sequence
  drm/i915/gvt: Fix possible recursive locking issue

Merge branch 'mediatek-drm-next-4.13' of https://github.com/ckhu-mediatek/linux.git-tags into drm-next

This include new color format support and some fixups.

* 'mediatek-drm-next-4.13' of https://github.com/ckhu-mediatek/linux.git-tags:
  drm/mediatek: separate color module to fixup error memory reallocation
  drm/mediatek: check for memory allocation failure
  drm/mediatek: re-phrase DRM_INFO error message
  drm/mediatek: use platform_register_drivers
  drm/mediatek: Support UYVY and YUYV format for overlay

Pull modules updates from Jessica Yu:
 "Summary of modules changes for the 4.13 merge window:

   - Minor code cleanups

   - Avoid accessing mod struct prior to checking module struct version,
     from Kees

   - Fix racy atomic inc/dec logic of kmod_concurrent_max in kmod, from
     Luis"

* tag 'modules-for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: make the modinfo name const
  kmod: reduce atomic operations on kmod_concurrent and simplify
  module: use list_for_each_entry_rcu() on find_module_all()
  kernel/module.c: suppress warning about unused nowarn variable
  module: Add module name to modinfo
  module: Pass struct load_info into symbol checks

Since internal phy-mode is reserved for non-xMII protocol we cannot use
it with dwmac-sun8i.
Furthermore, all DT patchs which comes with this patch were cleaned, so
the current state is broken.
This reverts commit 1c2fa5f8 ("net: stmmac: support future possible different internal phy mode")

Fixes: 1c2fa5f8 ("net: stmmac: support future possible different internal phy mode")
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If we have more than 32 unicast MAC addresses assigned to an interface
we will read beyond the end of the address table in the driver when
adding filters. The next 256 entries store multicast addresses, so we
will end up attempting to insert duplicate filters, which is mostly
harmless. If we add more than 288 unicast addresses we will then read
past the multicast address table, which is likely to be more exciting.

Fixes: 12fb0da4 ("sfc: clean fallbacks between promisc/normal in efx_ef10_filter_sync_rx_mode")
Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Stephen Hemminger says:

====================
minor net kernel-doc fixes

Fix a couple of small errors in kernel-doc for networking
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

An underscore in the kernel-doc comment section has special meaning
and mis-use generates an errors.

./net/core/datagram.c:207: ERROR: Unknown target name: "msg".
./net/core/datagram.c:379: ERROR: Unknown target name: "msg".
./net/core/datagram.c:816: ERROR: Unknown target name: "t".
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fill in missing kernel-doc for missing elements in struct sock.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

There is no check for return code of smsc911x_drv_probe()
in smsc911x_drv_probe(). The patch adds one.

Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull i2c updates from Wolfram Sang:
 "This pull request contains:

   - i2c core reorganization. One source file became too monolithic. It
     is now split up, yet we still have the same named object as the
     final output. This should ease maintenance.

   - new drivers: ZTE ZX2967 family, ASPEED 24XX/25XX

   - designware driver gained slave mode support

   - xgene-slimpro driver gained ACPI support

   - bigger overhaul for pca-platform driver

   - the algo-bit module now supports messages with enforced STOP

   - slightly bigger than usual set of driver updates and improvements

  and with much appreciated quality assurance from Andy Shevchenko"

* 'i2c/for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (51 commits)
  i2c: Provide a stub for i2c_detect_slave_mode()
  i2c: designware: Let slave adapter support be optional
  i2c: designware: Make HW init functions static
  i2c: designware: fix spelling mistakes
  i2c: pca-platform: propagate error from i2c_pca_add_numbered_bus
  i2c: pca-platform: correctly set algo_data.reset_chip
  i2c: acpi: Do not create i2c-clients for LNXVIDEO ACPI devices
  i2c: designware: enable SLAVE in platform module
  i2c: designware: add SLAVE mode functions
  i2c: zx2967: drop COMPILE_TEST dependency
  i2c: zx2967: always use the same device when printing errors
  i2c: pca-platform: use dev_warn/dev_info instead of printk
  i2c: pca-platform: use device managed allocations
  i2c: pca-platform: add devicetree awareness
  i2c: pca-platform: switch to struct gpio_desc
  dt-bindings: add bindings for i2c-pca-platform
  i2c: cadance: fix ctrl/addr reg write order
  i2c: zx2967: add i2c controller driver for ZTE's zx2967 family
  dt: bindings: add documentation for zx2967 family i2c controller
  i2c: algo-bit: add support for I2C_M_STOP
  ...

Pull IOMMU updates from Joerg Roedel:
 "This update comes with:

   - Support for lockless operation in the ARM io-pgtable code.

     This is an important step to solve the scalability problems in the
     common dma-iommu code for ARM

   - Some Errata workarounds for ARM SMMU implemenations

   - Rewrite of the deferred IO/TLB flush code in the AMD IOMMU driver.

     The code suffered from very high flush rates, with the new
     implementation the flush rate is down to ~1% of what it was before

   - Support for amd_iommu=off when booting with kexec.

     The problem here was that the IOMMU driver bailed out early without
     disabling the iommu hardware, if it was enabled in the old kernel

   - The Rockchip IOMMU driver is now available on ARM64

   - Align the return value of the iommu_ops->device_group call-backs to
     not miss error values

   - Preempt-disable optimizations in the Intel VT-d and common IOVA
     code to help Linux-RT

   - Various other small cleanups and fixes"

* tag 'iommu-updates-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (60 commits)
  iommu/vt-d: Constify intel_dma_ops
  iommu: Warn once when device_group callback returns NULL
  iommu/omap: Return ERR_PTR in device_group call-back
  iommu: Return ERR_PTR() values from device_group call-backs
  iommu/s390: Use iommu_group_get_for_dev() in s390_iommu_add_device()
  iommu/vt-d: Don't disable preemption while accessing deferred_flush()
  iommu/iova: Don't disable preempt around this_cpu_ptr()
  iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #126
  iommu/arm-smmu-v3: Enable ACPI based HiSilicon CMD_PREFETCH quirk(erratum 161010701)
  iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #74
  ACPI/IORT: Fixup SMMUv3 resource size for Cavium ThunderX2 SMMUv3 model
  iommu/arm-smmu-v3, acpi: Add temporary Cavium SMMU-V3 IORT model number definitions
  iommu/io-pgtable-arm: Use dma_wmb() instead of wmb() when publishing table
  iommu/io-pgtable: depend on !GENERIC_ATOMIC64 when using COMPILE_TEST with LPAE
  iommu/arm-smmu-v3: Remove io-pgtable spinlock
  iommu/arm-smmu: Remove io-pgtable spinlock
  iommu/io-pgtable-arm-v7s: Support lockless operation
  iommu/io-pgtable-arm: Support lockless operation
  iommu/io-pgtable: Introduce explicit coherency
  iommu/io-pgtable-arm-v7s: Refactor split_blk_unmap
  ...

Pull overlayfs updates from Miklos Szeredi:
 "This work from Amir introduces the inodes index feature, which
  provides:

   - hardlinks are not broken on copy up

   - infrastructure for overlayfs NFS export

  This also fixes constant st_ino for samefs case for lower hardlinks"

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (33 commits)
  ovl: mark parent impure and restore timestamp on ovl_link_up()
  ovl: document copying layers restrictions with inodes index
  ovl: cleanup orphan index entries
  ovl: persistent overlay inode nlink for indexed inodes
  ovl: implement index dir copy up
  ovl: move copy up lock out
  ovl: rearrange copy up
  ovl: add flag for upper in ovl_entry
  ovl: use struct copy_up_ctx as function argument
  ovl: base tmpfile in workdir too
  ovl: factor out ovl_copy_up_inode() helper
  ovl: extract helper to get temp file in copy up
  ovl: defer upper dir lock to tempfile link
  ovl: hash overlay non-dir inodes by copy up origin
  ovl: cleanup bad and stale index entries on mount
  ovl: lookup index entry for copy up origin
  ovl: verify index dir matches upper dir
  ovl: verify upper root dir matches lower root dir
  ovl: introduce the inodes index dir feature
  ovl: generalize ovl_create_workdir()
  ...

Reported-and-tested-by: Meelis Roos <mroos@linux.ee>
Fixes: commit d9e968cb "getrlimit()/setrlimit(): move compat to native"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The lower level nl80211 code in cfg80211 ensures that "len" is between
25 and NL80211_ATTR_FRAME (2304).  We subtract DOT11_MGMT_HDR_LEN (24) from
"len" so thats's max of 2280.  However, the action_frame->data[] buffer is
only BRCMF_FIL_ACTION_FRAME_SIZE (1800) bytes long so this memcpy() can
overflow.

	memcpy(action_frame->data, &buf[DOT11_MGMT_HDR_LEN],
	       le16_to_cpu(action_frame->len));

Cc: stable@vger.kernel.org # 3.9.x
Fixes: 18e2f61d ("brcmfmac: P2P action frame tx.")
Reported-by: "freenerguo(郭大兴)" <freenerguo@tencent.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When hns port type is not debug mode, netif_tx_disable is called
when there is a tx timeout, which requires system reboot to return
to normal state. This patch fix this problem by resetting the net
dev.

Fixes: b5996f11 ("net: add Hisilicon Network Subsystem basic ethernet support")
Signed-off-by: Lin Yun Sheng <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The ipmr_get_table() function doesn't return error pointers it returns
NULL on error.

Fixes: 4f75ba69 ("net: ipmr: Add ipmr_rtm_getroute")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

We accidentally free a NULL pointer and leak the pointer we want to
free.  Also you can tell from the label name what was intended.  :)

Fixes: abfcdc1d ("nfp: add a stats handler for flower offloads")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jiri Pirko says:

====================
mlxsw: spectrum: Various fixes

First patch adds a missing rollback in error path. Second patch prevents
a use-after-free during IPv4 route replace. Last two patches fix warnings
from static checkers.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

We can't rely on kzalloc() always succeeding, so check its return value.

Suppresses the following smatch error:

mlxsw_sp_switchdev_event() error: potential null dereference
'switchdev_work->fdb_info.addr'.  (kzalloc returns
 null)

Fixes: af061378 ("mlxsw: spectrum_switchdev: Add support for learning FDB through notification")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Commit 10e23eb2 ("mlxsw: spectrum: Remove support for bypass bridge
port attributes/vlan set") removed statements that used 'bridge_vlan',
but didn't remove the variable itself resulting in the following warning
with W=1:

warning: variable ‘bridge_vlan’ set but not used
[-Wunused-but-set-variable]

Remove the variable and suppress the warning.

Fixes: 10e23eb2 ("mlxsw: spectrum: Remove support for bypass bridge port attributes/vlan set")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

While working on IPv6 route replace I realized we can have a
use-after-free in IPv4 in case the replaced route is offloaded and the
only one using its FIB info.

The problem is that fib_table_insert() drops the reference on the FIB
info of the replaced routes which is eventually freed via call_rcu().
Since the driver doesn't hold a reference on this FIB info it can cause
a use-after-free when it tries to clear the RTNH_F_OFFLOAD flag stored
in fi->fib_flags.

After running the following commands in a loop for enough time with a
KASAN enabled kernel I finally got the below trace.

$ ip route add 192.168.50.0/24 via 192.168.200.1 dev enp3s0np3
$ ip route replace 192.168.50.0/24 dev enp3s0np5
$ ip route del 192.168.50.0/24 dev enp3s0np5

BUG: KASAN: use-after-free in mlxsw_sp_fib_entry_offload_unset+0xa7/0x120 [mlxsw_spectrum]
Read of size 4 at addr ffff8803717d9820 by task kworker/u4:2/55
[...]
? mlxsw_sp_fib_entry_offload_unset+0xa7/0x120 [mlxsw_spectrum]
? mlxsw_sp_fib_entry_offload_unset+0xa7/0x120 [mlxsw_spectrum]
? mlxsw_sp_router_neighs_update_work+0x1cd0/0x1ce0 [mlxsw_spectrum]
? mlxsw_sp_fib_entry_offload_unset+0xa7/0x120 [mlxsw_spectrum]
__asan_load4+0x61/0x80
mlxsw_sp_fib_entry_offload_unset+0xa7/0x120 [mlxsw_spectrum]
mlxsw_sp_fib_entry_offload_refresh+0xb6/0x370 [mlxsw_spectrum]
mlxsw_sp_router_fib_event_work+0xd1c/0x2780 [mlxsw_spectrum]
[...]
Freed by task 5131:
 save_stack_trace+0x16/0x20
 save_stack+0x46/0xd0
 kasan_slab_free+0x70/0xc0
 kfree+0x144/0x570
 free_fib_info_rcu+0x2e7/0x410
 rcu_process_callbacks+0x4f8/0xe30
 __do_softirq+0x1d3/0x9e2

Fix this by taking a reference on the FIB info when creating the nexthop
group it represents and drop it when the group is destroyed.

Fixes: 599cf8f9 ("mlxsw: spectrum_router: Add support for route replace")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

With this patch the error path of mlxsw_sp_nexthop_init() is symmetric
with mlxsw_sp_nexthop_fini(). Noticed during code review.

Fixes: a8c97014 ("mlxsw: spectrum_router: Refactor nexthop init routine")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull sparc fixes from David Miller:

 - Fix symbol version generation for assembler on sparc, from
   Nagarathnam Muthusamy.

 - Fix compound page handling in gup_huge_pmd(), from Nitin Gupta.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Fix gup_huge_pmd
  Adding the type of exported symbols
  sed regex in Makefile.build requires line break between exported symbols
  Adding asm-prototypes.h for genksyms to generate crc

With latest net-next:

====
clang  -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include -I./arch/x86/include -I./arch/x86/include/generated/uapi -I./arch/x86/include/generated  -I./include -I./arch/x86/include/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h  -Isamples/bpf \
    -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \
    -Wno-compare-distinct-pointer-types \
    -Wno-gnu-variable-sized-type-not-at-end \
    -Wno-address-of-packed-member -Wno-tautological-compare \
    -Wno-unknown-warning-option \
    -O2 -emit-llvm -c samples/bpf/tcp_synrto_kern.c -o -| llc -march=bpf -filetype=obj -o samples/bpf/tcp_synrto_kern.o
samples/bpf/tcp_synrto_kern.c:20:10: fatal error: 'bpf_endian.h' file not found
          ^~~~~~~~~~~~~~
1 error generated.
====

net has the same issue.

Add support for ntohl and htonl in tools/testing/selftests/bpf/bpf_endian.h.
Also move bpf_helpers.h from samples/bpf to selftests/bpf and change
compiler include logic so that programs in samples/bpf can access the headers
in selftests/bpf, but not the other way around.
Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

We currently get the following kmemleak report:
unreferenced object 0xffff8800039d9820 (size 32):
  comm "softirq", pid 0, jiffies 4295212383 (age 792.416s)
  hex dump (first 32 bytes):
    00 0c e0 03 00 88 ff ff ff 02 00 00 00 00 00 00  ................
    00 00 00 01 ff 11 00 02 86 dd 00 00 ff ff ff ff  ................
  backtrace:
    [<ffffffff8152b4aa>] kmemleak_alloc+0x4a/0xa0
    [<ffffffff811d8ec8>] kmem_cache_alloc_trace+0xb8/0x1c0
    [<ffffffffa0389683>] __br_mdb_notify+0x2a3/0x300 [bridge]
    [<ffffffffa038a0ce>] br_mdb_notify+0x6e/0x70 [bridge]
    [<ffffffffa0386479>] br_multicast_add_group+0x109/0x150 [bridge]
    [<ffffffffa0386518>] br_ip6_multicast_add_group+0x58/0x60 [bridge]
    [<ffffffffa0387fb5>] br_multicast_rcv+0x1d5/0xdb0 [bridge]
    [<ffffffffa037d7cf>] br_handle_frame_finish+0xcf/0x510 [bridge]
    [<ffffffffa03a236b>] br_nf_hook_thresh.part.27+0xb/0x10 [br_netfilter]
    [<ffffffffa03a3738>] br_nf_hook_thresh+0x48/0xb0 [br_netfilter]
    [<ffffffffa03a3fb9>] br_nf_pre_routing_finish_ipv6+0x109/0x1d0 [br_netfilter]
    [<ffffffffa03a4400>] br_nf_pre_routing_ipv6+0xd0/0x14c [br_netfilter]
    [<ffffffffa03a3c27>] br_nf_pre_routing+0x197/0x3d0 [br_netfilter]
    [<ffffffff814a2952>] nf_iterate+0x52/0x60
    [<ffffffff814a29bc>] nf_hook_slow+0x5c/0xb0
    [<ffffffffa037ddf4>] br_handle_frame+0x1a4/0x2c0 [bridge]

This happens when switchdev_port_obj_add() fails. This patch
frees complete_info object in the fail path.
Reviewed-by: Vallish Vaidyeshwara <vallish@amazon.com>
Signed-off-by: Eduardo Valentin <eduval@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull more block updates from Jens Axboe:
 "This is a followup for block changes, that didn't make the initial
  pull request. It's a bit of a mixed bag, this contains:

   - A followup pull request from Sagi for NVMe. Outside of fixups for
     NVMe, it also includes a series for ensuring that we properly
     quiesce hardware queues when browsing live tags.

   - Set of integrity fixes from Dmitry (mostly), fixing various issues
     for folks using DIF/DIX.

   - Fix for a bug introduced in cciss, with the req init changes. From
     Christoph.

   - Fix for a bug in BFQ, from Paolo.

   - Two followup fixes for lightnvm/pblk from Javier.

   - Depth fix from Ming for blk-mq-sched.

   - Also from Ming, performance fix for mtip32xx that was introduced
     with the dynamic initialization of commands"

* 'for-linus' of git://git.kernel.dk/linux-block: (44 commits)
  block: call bio_uninit in bio_endio
  nvmet: avoid unneeded assignment of submit_bio return value
  nvme-pci: add module parameter for io queue depth
  nvme-pci: compile warnings in nvme_alloc_host_mem()
  nvmet_fc: Accept variable pad lengths on Create Association LS
  nvme_fc/nvmet_fc: revise Create Association descriptor length
  lightnvm: pblk: remove unnecessary checks
  lightnvm: pblk: control I/O flow also on tear down
  cciss: initialize struct scsi_req
  null_blk: fix error flow for shared tags during module_init
  block: Fix __blkdev_issue_zeroout loop
  nvme-rdma: unconditionally recycle the request mr
  nvme: split nvme_uninit_ctrl into stop and uninit
  virtio_blk: quiesce/unquiesce live IO when entering PM states
  mtip32xx: quiesce request queues to make sure no submissions are inflight
  nbd: quiesce request queues to make sure no submissions are inflight
  nvme: kick requeue list when requeueing a request instead of when starting the queues
  nvme-pci: quiesce/unquiesce admin_q instead of start/stop its hw queues
  nvme-loop: quiesce/unquiesce admin_q instead of start/stop its hw queues
  nvme-fc: quiesce/unquiesce admin_q instead of start/stop its hw queues
  ...

Pull cifs fixes and sane default from Steve French:
 "Upgrade default dialect to more secure SMB3 from older cifs dialect"

* tag 'smb3-security-fixes-for-4.13' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Clean up unused variables in smb2pdu.c
  [SMB3] Improve security, move default dialect to SMB3 from old CIFS
  [SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred
  CIFS: Reconnect expired SMB sessions
  CIFS: Display SMB2 error codes in the hex format
  cifs: Use smb 2 - 3 and cifsacl mount options setacl function
  cifs: prototype declaration and definition to set acl for smb 2 - 3 and cifsacl mount options

We are not allowed to block on the RCU reader side, so can't
just hold the mutex as before. As a quick fix, convert it to
a spinlock.

Fixes: d9f1f61c ("tap: Extending tap device create/destroy APIs")
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Sainath Grandhi <sainath.grandhi@intel.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Since the introduction of ULD (Upper-Layer Drivers), the MSI-X
deallocating path changed in cxgb4: the driver frees the interrupts
of ULD when unregistering it or on shutdown PCI handler.

Problem is that if a MSI-X is not freed before deallocated in the PCI
layer, it will trigger a BUG() due to still "alive" interrupt being
tentatively quiesced.

The below trace was observed when doing a simple unbind of Chelsio's
adapter PCI function, like:
  "echo 001e:80:00.4 > /sys/bus/pci/drivers/cxgb4/unbind"

Trace:

  kernel BUG at drivers/pci/msi.c:352!
  Oops: Exception in kernel mode, sig: 5 [#1]
  ...
  NIP [c0000000005a5e60] free_msi_irqs+0xa0/0x250
  LR [c0000000005a5e50] free_msi_irqs+0x90/0x250
  Call Trace:
  [c0000000005a5e50] free_msi_irqs+0x90/0x250 (unreliable)
  [c0000000005a72c4] pci_disable_msix+0x124/0x180
  [d000000011e06708] disable_msi+0x88/0xb0 [cxgb4]
  [d000000011e06948] free_some_resources+0xa8/0x160 [cxgb4]
  [d000000011e06d60] remove_one+0x170/0x3c0 [cxgb4]
  [c00000000058a910] pci_device_remove+0x70/0x110
  [c00000000064ef04] device_release_driver_internal+0x1f4/0x2c0
  ...

This patch fixes the issue by refactoring the shutdown path of ULD on
cxgb4 driver, by properly freeing and disabling interrupts on PCI
remove handler too.

Fixes: 0fbc81b3 ("Allocate resources dynamically for all cxgb4 ULD's")
Reported-by: Harsha Thyagaraja <hathyaga@in.ibm.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The option "h" (host order ) exists for ipv4 only.
Remove the h when printing ipv6 addresses.

Lead to the following smatch warning:

drivers/net/ethernet/qlogic/qed/qed_iwarp.c:585 qed_iwarp_print_tcp_ramrod()
warn: '%pI6' can only be followed by c
drivers/net/ethernet/qlogic/qed/qed_iwarp.c:1521 qed_iwarp_print_cm_info()
warn: '%pI6' can only be followed by c

Fixes commit 456a5849 ("qed: iWARP CM add passive side connect")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Passing (void*)val instead of &val would make a pointer out of an integer
and cause sock_setsockopt to -EFAULT.

See tools/testing/selftests/networking/timestamping/timestamping.c
for a working example.

Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: David S. Miller <davem@davemloft.net>