Pull sound fixes from Takashi Iwai:
 "All relatively small changes:

   - a regression fix for PCM link code with CONFIG_REFCOUNT_FULL;
     stumbled on a slight difference between atomic_t and refcount_t

   - a couple of HD-audio stabilization patches addressing the too slow
     PM resume seen on some Intel chips

   - a series of ALSA compress-offload API fixes, including the
     regression by the previous capture stream support

   - trivial LINE6 USB-audio driver fixes, a new Conexant HD-audio chip
     coverage, and a fix in AC97 bus error path"

* tag 'sound-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Add a conexant codec entry to let mute led work
  ALSA: hda - Fix intermittent CORB/RIRB stall on Intel chips
  ALSA: ac97: Fix double free of ac97_codec_device
  ALSA: compress: Be more restrictive about when a drain is allowed
  ALSA: compress: Don't allow paritial drain operations on capture streams
  ALSA: compress: Prevent bypasses of set_params
  ALSA: compress: Fix regression on compressed capture streams
  ALSA: line6: Fix a typo
  ALSA: pcm: Fix refcount_inc() on zero usage
  ALSA: line6: Fix wrong altsetting for LINE6_PODHD500_1
  ALSA: hda - Optimize resume for codecs without jack detection

Pull IOMMU fixes from Joerg Roedel:

 - revert an Intel VT-d patch that caused boot problems on some machines

 - fix AMD IOMMU interrupts with x2apic enabled

 - fix a potential crash when Intel VT-d domain allocation fails

 - fix crash in Intel VT-d driver when accessing a domain without a
   flush queue

 - formatting fix for new Intel VT-d debugfs code

 - fix for use-after-free bug in IOVA code

 - fix for a NULL-pointer dereference in Intel VT-d driver when PCI
   hotplug is used

 - compilation fix for one of the previous fixes

* tag 'iommu-fixes-v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Add support for X2APIC IOMMU interrupts
  iommu/iova: Fix compilation error with !CONFIG_IOMMU_IOVA
  iommu/vt-d: Print pasid table entries MSB to LSB in debugfs
  iommu/iova: Remove stale cached32_node
  iommu/vt-d: Check if domain->pgd was allocated
  iommu/vt-d: Don't queue_iova() if there is no flush queue
  iommu/vt-d: Avoid duplicated pci dma alias consideration
  Revert "iommu/vt-d: Consolidate domain_init() to avoid duplication"

Pull iscsi_ibft fix from Konrad Rzeszutek Wilk:
 "One tiny fix to enable iSCSI IBFT to be compiled under ARM"

* 'for-linus-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft:
  iscsi_ibft: make ISCSI_IBFT depend on ACPI instead of ISCSI_IBFT_FIND

Merge tag 'hwmon-for-v5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:
 "A couple of hwmon bug fixes:

   - Update k8temp documentation URL

   - Register address fixes in nct6775 driver

   - Fix potential division by zero in occ driver"

* tag 'hwmon-for-v5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (k8temp) documentation: update URL of datasheet
  hwmon: (nct6775) Fix register address and added missed tolerance for nct6106
  hwmon: (occ) Fix division by zero issue

Pull power management fixes from Rafael Wysocki
 "These fix two issues related to the RAPL MMIO interface support added
  recently and one cpufreq driver issue.

  Specifics:

   - Initialize the power capping subsystem and the RAPL driver earlier
     in case the int340X thermal driver is built-in and attempts to
     register an MMIO interface for RAPL which must not happen before
     the requisite infrastructure is ready (Zhang Rui)

   - Fix the int340X thermal driver's RAPL MMIO interface registration
     error path (Rafael Wysocki)

   - Fix possible use-after-free in the pasemi cpufreq driver (Wen
     Yang)"

* tag 'pm-5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init()
  int340X/processor_thermal_device: Fix proc_thermal_rapl_remove()
  powercap: Invoke powercap_init() and rapl_init() earlier

Pull RISC-V updates from Paul Walmsley:
 "Four minor RISC-V-related changes:

   - Add support for the new clone3 syscall for RV64, relying on the
     generic support

   - Add DT data for the gigabit Ethernet controller on the SiFive FU540
     and the HiFive Unleashed board

   - Update MAINTAINERS to add me to the arch/riscv maintainers' list

   - Add support for PCIe message-signaled interrupts by reusing the
     generic header file"

* tag 'riscv/for-v5.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: dts: Add DT node for SiFive FU540 Ethernet controller driver
  riscv: include generic support for MSI irqdomains
  MAINTAINERS: Add Paul as a RISC-V maintainer
  riscv: enable sys_clone3 syscall for rv64

Pull ktest fixlets from Steven Rostedt:
 "This contains only simple spelling fixes"

* tag 'ktest-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest: Fix some typos in config-bisect.pl

The access() (and faccessat()) credentials change can cause an
unnecessary load on the RCU machinery because every access() call ends
up freeing the temporary access credential using RCU.

This isn't really noticeable on small machines, but if you have hundreds
of cores you can cause huge slowdowns due to RCU storms.

It's easy to avoid: the temporary access crededntials aren't actually
normally accessed using RCU at all, so we can avoid the whole issue by
just marking them as such.

* access-creds:
  access: avoid the RCU grace period for the temporary subjective credentials

* pm-cpufreq:
  cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init()

This conexant codec isn't in the supported codec list yet, the hda
generic driver can drive this codec well, but on a Lenovo machine
with mute/mic-mute leds, we need to apply CXT_FIXUP_THINKPAD_ACPI
to make the leds work. After adding this codec to the list, the
driver patch_conexant.c will apply THINKPAD_ACPI to this machine.

Cc: stable@vger.kernel.org
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

It turned out that the recent Intel HD-audio controller chips show a
significant stall during the system PM resume intermittently.  It
doesn't happen so often and usually it may read back successfully
after one or more seconds, but in some rare worst cases the driver
went into fallback mode.

After trial-and-error, we found out that the communication stall seems
covered by issuing the sync after each verb write, as already done for
AMD and other chipsets.  So this patch enables the write-sync flag for
the recent Intel chips, Skylake and onward, as a workaround.

Also, since Broxton and co have the very same driver flags as Skylake,
refer to the Skylake driver flags instead of defining the same
contents again for simplification.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=201901Reported-and-tested-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

This patch fixes some spelling typos in config-bisect.pl

Link: http://lkml.kernel.org/r/20190723032445.14220-1-standby24x7@gmail.comAcked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

It turns out that 'access()' (and 'faccessat()') can cause a lot of RCU
work because it installs a temporary credential that gets allocated and
freed for each system call.

The allocation and freeing overhead is mostly benign, but because
credentials can be accessed under the RCU read lock, the freeing
involves a RCU grace period.

Which is not a huge deal normally, but if you have a lot of access()
calls, this causes a fair amount of seconday damage: instead of having a
nice alloc/free patterns that hits in hot per-CPU slab caches, you have
all those delayed free's, and on big machines with hundreds of cores,
the RCU overhead can end up being enormous.

But it turns out that all of this is entirely unnecessary.  Exactly
because access() only installs the credential as the thread-local
subjective credential, the temporary cred pointer doesn't actually need
to be RCU free'd at all.  Once we're done using it, we can just free it
synchronously and avoid all the RCU overhead.

So add a 'non_rcu' flag to 'struct cred', which can be set by users that
know they only use it in non-RCU context (there are other potential
users for this).  We can make it a union with the rcu freeing list head
that we need for the RCU case, so this doesn't need any extra storage.

Note that this also makes 'get_current_cred()' clear the new non_rcu
flag, in case we have filesystems that take a long-term reference to the
cred and then expect the RCU delayed freeing afterwards.  It's not
entirely clear that this is required, but it makes for clear semantics:
the subjective cred remains non-RCU as long as you only access it
synchronously using the thread-local accessors, but you _can_ use it as
a generic cred if you want to.

It is possible that we should just remove the whole RCU markings for
->cred entirely.  Only ->real_cred is really supposed to be accessed
through RCU, and the long-term cred copies that nfs uses might want to
explicitly re-enable RCU freeing if required, rather than have
get_current_cred() do it implicitly.

But this is a "minimal semantic changes" change for the immediate
problem.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Jan Glauber <jglauber@marvell.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Jayachandran Chandrasekharan Nair <jnair@marvell.com>
Cc: Greg KH <greg@kroah.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull powerpc fixes from Michael Ellerman:
 "An assortment of non-regression fixes that have accumulated since the
  start of the merge window.

   - A fix for a user triggerable oops on machines where transactional
     memory is disabled, eg. Power9 bare metal, Power8 with TM disabled
     on the command line, or all Power7 or earlier machines.

   - Three fixes for handling of PMU and power saving registers when
     running nested KVM on Power9.

   - Two fixes for bugs found while stress testing the XIVE interrupt
     controller code, also on Power9.

   - A fix to allow guests to boot under Qemu/KVM on Power9 using the
     the Hash MMU with >= 1TB of memory.

   - Two fixes for bugs in the recent DMA cleanup, one of which could
     lead to checkstops.

   - And finally three fixes for the PAPR SCM nvdimm driver.

  Thanks to: Alexey Kardashevskiy, Andrea Arcangeli, Cédric Le Goater,
  Christoph Hellwig, David Gibson, Gautham R. Shenoy, Michael Neuling,
  Oliver O'Halloran, Satheesh Rajendran, Shawn Anastasio, Suraj Jitindar
  Singh, Vaibhav Jain"

* tag 'powerpc-5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/papr_scm: Force a scm-unbind if initial scm-bind fails
  powerpc/papr_scm: Update drc_pmem_unbind() to use H_SCM_UNBIND_ALL
  powerpc/pseries: Update SCM hcall op-codes in hvcall.h
  powerpc/tm: Fix oops on sigreturn on systems without TM
  powerpc/dma: Fix invalid DMA mmap behavior
  KVM: PPC: Book3S HV: XIVE: fix rollback when kvmppc_xive_create fails
  powerpc/xive: Fix loop exit-condition in xive_find_target_in_mask()
  powerpc: fix off by one in max_zone_pfn initialization for ZONE_DMA
  KVM: PPC: Book3S HV: Save and restore guest visible PSSCR bits on pseries
  powerpc/pmu: Set pmcregs_in_use in paca when running as LPAR
  KVM: PPC: Book3S HV: Always save guest pmu for guest capable of nesting
  powerpc/mm: Limit rma_size to 1TB when running without HV mode

Pull KVM fixes from Paolo Bonzini:
 "Bugfixes, a pvspinlock optimization, and documentation moving"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: X86: Boost queue head vCPU to mitigate lock waiter preemption
  Documentation: move Documentation/virtual to Documentation/virt
  KVM: nVMX: Set cached_vmcs12 and cached_shadow_vmcs12 NULL after free
  KVM: X86: Dynamically allocate user_fpu
  KVM: X86: Fix fpu state crash in kvm guest
  Revert "kvm: x86: Use task structs fpu field for user"
  KVM: nVMX: Clear pending KVM_REQ_GET_VMCS12_PAGES when leaving nested

Pull dma-mapping regression fix from Christoph Hellwig:
 "Ensure that dma_addressing_limited doesn't crash on devices without a
  dma mask (Eric Auger)"

* tag 'dma-mapping-5.3-2' of git://git.infradead.org/users/hch/dma-mapping:
  dma-mapping: use dma_get_mask in dma_addressing_limited

Commit 11752adb (locking/pvqspinlock: Implement hybrid PV queued/unfair locks)
introduces hybrid PV queued/unfair locks
 - queued mode (no starvation)
 - unfair mode (good performance on not heavily contended lock)
The lock waiter goes into the unfair mode especially in VMs with over-commit
vCPUs since increaing over-commitment increase the likehood that the queue
head vCPU may have been preempted and not actively spinning.

However, reschedule queue head vCPU timely to acquire the lock still can get
better performance than just depending on lock stealing in over-subscribe
scenario.

Testing on 80 HT 2 socket Xeon Skylake server, with 80 vCPUs VM 80GB RAM:
ebizzy -M
             vanilla     boosting    improved
 1VM          23520        25040         6%
 2VM           8000        13600        70%
 3VM           3100         5400        74%

The lock holder vCPU yields to the queue head vCPU when unlock, to boost queue
head vCPU which is involuntary preemption or the one which is voluntary halt
due to fail to acquire the lock after a short spin in the guest.

Cc: Waiman Long <longman@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Renaming docs seems to be en vogue at the moment, so fix on of the
grossly misnamed directories.  We usually never use "virtual" as
a shortcut for virtualization in the kernel, but always virt,
as seen in the virt/ top-level directory.  Fix up the documentation
to match that.

Fixes: ed16648e ("Move kvm, uml, and lguest subdirectories under a common "virtual" directory, I.E:")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Pull parisc fixes from Helge Deller:

 - Fix build issues when kprobes are enabled

 - Speed up ITLB/DTLB cache flushes when running on machines with
   combined TLBs

* 'parisc-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Flush ITLB in flush_tlb_all_local() only on split TLB machines
  parisc: add kprobe_fault_handler()

We currently have cases where the dma_addressing_limited() gets
called with dma_mask unset. This causes a NULL pointer dereference.

Use dma_get_mask() accessor to prevent the crash.

Fixes: b8664554 ("dma-mapping: add a dma_addressing_limited helper")
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

AMD IOMMU requires IntCapXT registers to be setup in order to generate
its own interrupts (for Event Log, PPR Log, and GA Log) with 32-bit
APIC destination ID. Without this support, AMD IOMMU MSI interrupts
will not be routed correctly when booting the system in X2APIC mode.

Cc: Joerg Roedel <joro@8bytes.org>
Fixes: 90fcffd9 ('iommu/amd: Add support for IOMMU XT mode')
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

put_device will call ac97_codec_release to free
ac97_codec_device and other resources, so remove the kfree
and other redundant code.

Fixes: 74426fbf ("ALSA: ac97: add an ac97 bus")
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Draining makes little sense in the situation of hardware overrun, as the
hardware will have consumed all its available samples. Additionally,
draining whilst the stream is paused would presumably get stuck as no
data is being consumed on the DSP side.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Partial drain and next track are intended for gapless playback and
don't really have an obvious interpretation for a capture stream, so
makes sense to not allow those operations on capture streams.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Currently, whilst in SNDRV_PCM_STATE_OPEN it is possible to call
snd_compr_stop, snd_compr_drain and snd_compr_partial_drain, which
allow a transition to SNDRV_PCM_STATE_SETUP. The stream should
only be able to move to the setup state once it has received a
SNDRV_COMPRESS_SET_PARAMS ioctl. Fix this issue by not allowing
those ioctls whilst in the open state.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

A previous fix to the stop handling on compressed capture streams causes
some knock on issues. The previous fix updated snd_compr_drain_notify to
set the state back to PREPARED for capture streams. This causes some
issues however as the handling for snd_compr_poll differs between the
two states and some user-space applications were relying on the poll
failing after the stream had been stopped.

To correct this regression whilst still fixing the original problem the
patch was addressing, update the capture handling to skip the PREPARED
state rather than skipping the SETUP state as it has done until now.

Fixes: 4f2ab5e1 ("ALSA: compress: Fix stop handling on compressed capture streams")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

The stub function for !CONFIG_IOMMU_IOVA needs to be
'static inline'.

Fixes: effa4678 ('iommu/vt-d: Don't queue_iova() if there is no flush queue')
Signed-off-by: Joerg Roedel <jroedel@suse.de>

The cpu variable is still being used in the of_get_property() call
after the of_node_put() call, which may result in use-after-free.

Fixes: a9acc26b ("cpufreq/pasemi: fix possible object reference leak")
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Passing 0 to cpuhp_remove_state() triggers the BUG_ON() in
__cpuhp_remove_state_cpuslocked() and the argument passed to
powercap_unregister_control_type() is expected to be a valid
pointer, so avoid calling these functions with incorrect
arguments from proc_thermal_rapl_remove().

Fixes: 555c45fe ("int340X/processor_thermal_device: add support for MMIO RAPL")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>

DT node for SiFive FU540-C000 GEMGXL Ethernet controller driver added
Signed-off-by: Yash Shah <yash.shah@sifive.com>
Reviewed-by: Sagar Kadam <sagar.kadam@sifive.com>
Cc: Andrew Lunn <andrew@lunn.ch>
[paul.walmsley@sifive.com: changed "phy1" to "phy0" at Andrew Lunn's
 suggestion]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>

Some RISC-V systems include PCIe host controllers that support PCIe
message-signaled interrupts.  For this to work on Linux, we need to
enable PCI_MSI_IRQ_DOMAIN and define struct msi_alloc_info.  Support
for the latter is enabled by including the architecture-generic msi.h
include.
Signed-off-by: Wesley Terpstra <wesley@sifive.com>
[paul.walmsley@sifive.com: split initial patch into one arch/riscv
 patch and one drivers/pci patch]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>

The RISC-V port has grown significantly over the past year.  Paul's been
helping out for a while ago.  We agreed in person that he'd take over
collecting the patches and submitting the PRs, but it looks like I
forgot to make it official.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>

Pull preemption Kconfig fix from Thomas Gleixner:
 "The PREEMPT_RT stub config renamed PREEMPT to PREEMPT_LL and defined
  PREEMPT outside of the menu and made it selectable by both PREEMPT_LL
  and PREEMPT_RT.

  Stupid me missed that 114 defconfigs select CONFIG_PREEMPT which
  obviously can't work anymore. oldconfig builds are affected as well,
  but it's more obvious as the user gets asked. [old]defconfig silently
  fixes it up and selects PREEMPT_NONE.

  Unbreak it by undoing the rename and adding a intermediate config
  symbol which is selected by both PREEMPT and PREEMPT_RT. That requires
  to chase down a few #ifdefs, but it's better than tweaking 114
  defconfigs and annoying users"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y

Pull pidfd polling fix from Christian Brauner:
 "A fix for pidfd polling. It ensures that the task's exit state is
  visible to all waiters"

* tag 'for-linus-20190722' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
  pidfd: fix a poll race when setting exit_state

Pull btrfs fixes from David Sterba:

 - fixes for leaks caused by recently merged patches

 - one build fix

 - a fix to prevent mixing of incompatible features

* tag 'for-5.3-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: don't leak extent_map in btrfs_get_io_geometry()
  btrfs: free checksum hash on in close_ctree
  btrfs: Fix build error while LIBCRC32C is module
  btrfs: inode: Don't compress if NODATASUM or NODATACOW set

The merge of the CONFIG_PREEMPT_RT stub renamed CONFIG_PREEMPT to
CONFIG_PREEMPT_LL which causes all defconfigs which have CONFIG_PREEMPT=y
set to fall back to CONFIG_PREEMPT_NONE because CONFIG_PREEMPT depends on
the preemption mode choice wich defaults to NONE. This also affects
oldconfig builds.

So rather than changing 114 defconfig files and being an annoyance to
users, revert the rename and select a new config symbol PREEMPTION. That
keeps everything working smoothly and the revelant ifdef's are going to be
fixed up step by step.
Reported-by: Mark Rutland <mark.rutland@arm.com>
Fixes: a50a3f4b ("sched/rt, Kconfig: Introduce CONFIG_PREEMPT_RT")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Pull media fixes from Mauro Carvalho Chehab:
 "For two regressions in media core:

   - v4l2-subdev: fix regression in check_pad()

   - videodev2.h: change V4L2_PIX_FMT_BGRA444 define: fourcc was already
     in use"

* tag 'media/v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: videodev2.h: change V4L2_PIX_FMT_BGRA444 define: fourcc was already in use
  media: v4l2-subdev: fix regression in check_pad()

Commit dd5142ca ("iommu/vt-d: Add debugfs support to show scalable mode
DMAR table internals") prints content of pasid table entries from LSB to
MSB where as other entries are printed MSB to LSB. So, to maintain
uniformity among all entries and to not confuse the user, print MSB first.

Cc: Joerg Roedel <joro@8bytes.org>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Sohil Mehta <sohil.mehta@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Fixes: dd5142ca ("iommu/vt-d: Add debugfs support to show scalable mode DMAR table internals")
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Since the cached32_node is allowed to be advanced above dma_32bit_pfn
(to provide a shortcut into the limited range), we need to be careful to
remove the to be freed node if it is the cached32_node.

[   48.477773] BUG: KASAN: use-after-free in __cached_rbnode_delete_update+0x68/0x110
[   48.477812] Read of size 8 at addr ffff88870fc19020 by task kworker/u8:1/37
[   48.477843]
[   48.477879] CPU: 1 PID: 37 Comm: kworker/u8:1 Tainted: G     U            5.2.0+ #735
[   48.477915] Hardware name: Intel Corporation NUC7i5BNK/NUC7i5BNB, BIOS BNKBL357.86A.0052.2017.0918.1346 09/18/2017
[   48.478047] Workqueue: i915 __i915_gem_free_work [i915]
[   48.478075] Call Trace:
[   48.478111]  dump_stack+0x5b/0x90
[   48.478137]  print_address_description+0x67/0x237
[   48.478178]  ? __cached_rbnode_delete_update+0x68/0x110
[   48.478212]  __kasan_report.cold.3+0x1c/0x38
[   48.478240]  ? __cached_rbnode_delete_update+0x68/0x110
[   48.478280]  ? __cached_rbnode_delete_update+0x68/0x110
[   48.478308]  __cached_rbnode_delete_update+0x68/0x110
[   48.478344]  private_free_iova+0x2b/0x60
[   48.478378]  iova_magazine_free_pfns+0x46/0xa0
[   48.478403]  free_iova_fast+0x277/0x340
[   48.478443]  fq_ring_free+0x15a/0x1a0
[   48.478473]  queue_iova+0x19c/0x1f0
[   48.478597]  cleanup_page_dma.isra.64+0x62/0xb0 [i915]
[   48.478712]  __gen8_ppgtt_cleanup+0x63/0x80 [i915]
[   48.478826]  __gen8_ppgtt_cleanup+0x42/0x80 [i915]
[   48.478940]  __gen8_ppgtt_clear+0x433/0x4b0 [i915]
[   48.479053]  __gen8_ppgtt_clear+0x462/0x4b0 [i915]
[   48.479081]  ? __sg_free_table+0x9e/0xf0
[   48.479116]  ? kfree+0x7f/0x150
[   48.479234]  i915_vma_unbind+0x1e2/0x240 [i915]
[   48.479352]  i915_vma_destroy+0x3a/0x280 [i915]
[   48.479465]  __i915_gem_free_objects+0xf0/0x2d0 [i915]
[   48.479579]  __i915_gem_free_work+0x41/0xa0 [i915]
[   48.479607]  process_one_work+0x495/0x710
[   48.479642]  worker_thread+0x4c7/0x6f0
[   48.479687]  ? process_one_work+0x710/0x710
[   48.479724]  kthread+0x1b2/0x1d0
[   48.479774]  ? kthread_create_worker_on_cpu+0xa0/0xa0
[   48.479820]  ret_from_fork+0x1f/0x30
[   48.479864]
[   48.479907] Allocated by task 631:
[   48.479944]  save_stack+0x19/0x80
[   48.479994]  __kasan_kmalloc.constprop.6+0xc1/0xd0
[   48.480038]  kmem_cache_alloc+0x91/0xf0
[   48.480082]  alloc_iova+0x2b/0x1e0
[   48.480125]  alloc_iova_fast+0x58/0x376
[   48.480166]  intel_alloc_iova+0x90/0xc0
[   48.480214]  intel_map_sg+0xde/0x1f0
[   48.480343]  i915_gem_gtt_prepare_pages+0xb8/0x170 [i915]
[   48.480465]  huge_get_pages+0x232/0x2b0 [i915]
[   48.480590]  ____i915_gem_object_get_pages+0x40/0xb0 [i915]
[   48.480712]  __i915_gem_object_get_pages+0x90/0xa0 [i915]
[   48.480834]  i915_gem_object_prepare_write+0x2d6/0x330 [i915]
[   48.480955]  create_test_object.isra.54+0x1a9/0x3e0 [i915]
[   48.481075]  igt_shared_ctx_exec+0x365/0x3c0 [i915]
[   48.481210]  __i915_subtests.cold.4+0x30/0x92 [i915]
[   48.481341]  __run_selftests.cold.3+0xa9/0x119 [i915]
[   48.481466]  i915_live_selftests+0x3c/0x70 [i915]
[   48.481583]  i915_pci_probe+0xe7/0x220 [i915]
[   48.481620]  pci_device_probe+0xe0/0x180
[   48.481665]  really_probe+0x163/0x4e0
[   48.481710]  device_driver_attach+0x85/0x90
[   48.481750]  __driver_attach+0xa5/0x180
[   48.481796]  bus_for_each_dev+0xda/0x130
[   48.481831]  bus_add_driver+0x205/0x2e0
[   48.481882]  driver_register+0xca/0x140
[   48.481927]  do_one_initcall+0x6c/0x1af
[   48.481970]  do_init_module+0x106/0x350
[   48.482010]  load_module+0x3d2c/0x3ea0
[   48.482058]  __do_sys_finit_module+0x110/0x180
[   48.482102]  do_syscall_64+0x62/0x1f0
[   48.482147]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   48.482190]
[   48.482224] Freed by task 37:
[   48.482273]  save_stack+0x19/0x80
[   48.482318]  __kasan_slab_free+0x12e/0x180
[   48.482363]  kmem_cache_free+0x70/0x140
[   48.482406]  __free_iova+0x1d/0x30
[   48.482445]  fq_ring_free+0x15a/0x1a0
[   48.482490]  queue_iova+0x19c/0x1f0
[   48.482624]  cleanup_page_dma.isra.64+0x62/0xb0 [i915]
[   48.482749]  __gen8_ppgtt_cleanup+0x63/0x80 [i915]
[   48.482873]  __gen8_ppgtt_cleanup+0x42/0x80 [i915]
[   48.482999]  __gen8_ppgtt_clear+0x433/0x4b0 [i915]
[   48.483123]  __gen8_ppgtt_clear+0x462/0x4b0 [i915]
[   48.483250]  i915_vma_unbind+0x1e2/0x240 [i915]
[   48.483378]  i915_vma_destroy+0x3a/0x280 [i915]
[   48.483500]  __i915_gem_free_objects+0xf0/0x2d0 [i915]
[   48.483622]  __i915_gem_free_work+0x41/0xa0 [i915]
[   48.483659]  process_one_work+0x495/0x710
[   48.483704]  worker_thread+0x4c7/0x6f0
[   48.483748]  kthread+0x1b2/0x1d0
[   48.483787]  ret_from_fork+0x1f/0x30
[   48.483831]
[   48.483868] The buggy address belongs to the object at ffff88870fc19000
[   48.483868]  which belongs to the cache iommu_iova of size 40
[   48.483920] The buggy address is located 32 bytes inside of
[   48.483920]  40-byte region [ffff88870fc19000, ffff88870fc19028)
[   48.483964] The buggy address belongs to the page:
[   48.484006] page:ffffea001c3f0600 refcount:1 mapcount:0 mapping:ffff8888181a91c0 index:0x0 compound_mapcount: 0
[   48.484045] flags: 0x8000000000010200(slab|head)
[   48.484096] raw: 8000000000010200 ffffea001c421a08 ffffea001c447e88 ffff8888181a91c0
[   48.484141] raw: 0000000000000000 0000000000120012 00000001ffffffff 0000000000000000
[   48.484188] page dumped because: kasan: bad access detected
[   48.484230]
[   48.484265] Memory state around the buggy address:
[   48.484314]  ffff88870fc18f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   48.484361]  ffff88870fc18f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   48.484406] >ffff88870fc19000: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc
[   48.484451]                                ^
[   48.484494]  ffff88870fc19080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   48.484530]  ffff88870fc19100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108602
Fixes: e60aa7b5 ("iommu/iova: Extend rbtree node caching")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: <stable@vger.kernel.org> # v4.15+
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Pull networking fixes from David Miller:

 1) Several netfilter fixes including a nfnetlink deadlock fix from
    Florian Westphal and fix for dropping VRF packets from Miaohe Lin.

 2) Flow offload fixes from Pablo Neira Ayuso including a fix to restore
    proper block sharing.

 3) Fix r8169 PHY init from Thomas Voegtle.

 4) Fix memory leak in mac80211, from Lorenzo Bianconi.

 5) Missing NULL check on object allocation in cxgb4, from Navid
    Emamdoost.

 6) Fix scaling of RX power in sfp phy driver, from Andrew Lunn.

 7) Check that there is actually an ip header to access in skb->data in
    VRF, from Peter Kosyh.

 8) Remove spurious rcu unlock in hv_netvsc, from Haiyang Zhang.

 9) One more tweak the the TCP fragmentation memory limit changes, to be
    less harmful to applications setting small SO_SNDBUF values. From
    Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (40 commits)
  tcp: be more careful in tcp_fragment()
  hv_netvsc: Fix extra rcu_read_unlock in netvsc_recv_callback()
  vrf: make sure skb->data contains ip header to make routing
  connector: remove redundant input callback from cn_dev
  qed: Prefer pcie_capability_read_word()
  igc: Prefer pcie_capability_read_word()
  cxgb4: Prefer pcie_capability_read_word()
  be2net: Synchronize be_update_queues with dev_watchdog
  bnx2x: Prevent load reordering in tx completion processing
  net: phy: sfp: hwmon: Fix scaling of RX power
  net: sched: verify that q!=NULL before setting q->flags
  chelsio: Fix a typo in a function name
  allocate_flower_entry: should check for null deref
  net: hns3: typo in the name of a constant
  kbuild: add net/netfilter/nf_tables_offload.h to header-test blacklist.
  tipc: Fix a typo
  mac80211: don't warn about CW params when not using them
  mac80211: fix possible memory leak in ieee80211_assign_beacon
  nl80211: fix NL80211_HE_MAX_CAPABILITY_LEN
  nl80211: fix VENDOR_CMD_RAW_DATA
  ...