platform/kernel/linux-starfive.git
6 years agoPM / domains: Add perf_state attribute to genpd debugfs
Rajendra Nayak [Wed, 30 May 2018 09:45:17 +0000 (15:15 +0530)]
PM / domains: Add perf_state attribute to genpd debugfs

Now that genpd supports performance states, add this additional
attribute as part of the power domains debugfs entry, to display
the current performance state for the Power domain.

Suggested-by: David Collins <collinsd@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoMerge branch 'opp/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/viresh...
Rafael J. Wysocki [Wed, 30 May 2018 10:54:57 +0000 (12:54 +0200)]
Merge branch 'opp/linux-next' of git://git./linux/kernel/git/vireshk/pm into pm-opp

Pull more OPP updates for v4.18 from Viresh Kumar.

* 'opp/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  OPP: Allow same OPP table to be used for multiple genpd
  PM / OPP: Fix shared OPP table support in dev_pm_opp_register_set_opp_helper()
  PM / OPP: Fix shared OPP table support in dev_pm_opp_set_regulators()
  PM / OPP: Fix shared OPP table support in dev_pm_opp_set_prop_name()
  PM / OPP: Fix shared OPP table support in dev_pm_opp_set_supported_hw()

6 years agoOPP: Allow same OPP table to be used for multiple genpd
Viresh Kumar [Wed, 30 May 2018 09:49:38 +0000 (15:19 +0530)]
OPP: Allow same OPP table to be used for multiple genpd

The OPP binding says:

Property: operating-points-v2

...

This can contain more than one phandle for power domain
providers that provide multiple power domains. That is, one
phandle for each power domain. If only one phandle is available,
then the same OPP table will be used for all power domains
provided by the power domain provider.

But the OPP core isn't allowing the same OPP table to be used for
multiple domains. Update dev_pm_opp_of_add_table_indexed() to allow
that.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Rajendra Nayak <rnayak@codeaurora.org>
6 years agoPM / Domain: Return 0 on error from of_genpd_opp_to_performance_state()
Viresh Kumar [Thu, 24 May 2018 10:32:40 +0000 (16:02 +0530)]
PM / Domain: Return 0 on error from of_genpd_opp_to_performance_state()

of_genpd_opp_to_performance_state() should return 0 on errors, as its
doc comment describes. While it follows that mostly, it returns a
negative error number on one of the failures.

Fix that.

Fixes: 6e41766a6a50 "PM / Domain: Implement of_genpd_opp_to_performance_state()"
Reported-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoPM / OPP: Fix shared OPP table support in dev_pm_opp_register_set_opp_helper()
Viresh Kumar [Tue, 22 May 2018 11:08:08 +0000 (16:38 +0530)]
PM / OPP: Fix shared OPP table support in dev_pm_opp_register_set_opp_helper()

It should be fine to call dev_pm_opp_register_set_opp_helper() for all
possible CPUs, even if some of them share the OPP table as the caller
may not be aware of sharing policy.

Lets increment the reference count of the OPP table and return its
pointer. The caller need to call dev_pm_opp_register_put_opp_helper()
the same number of times later on to drop all the references.

To avoid adding another counter to count how many times
dev_pm_opp_register_set_opp_helper() is called for the same OPP table,
dev_pm_opp_register_put_opp_helper() frees the resources on the very
first call made to it, assuming that the caller would be calling it
sequentially for all the CPUs. We can revisit that if that assumption is
broken in the future.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
6 years agoPM / OPP: Fix shared OPP table support in dev_pm_opp_set_regulators()
Viresh Kumar [Tue, 22 May 2018 11:08:08 +0000 (16:38 +0530)]
PM / OPP: Fix shared OPP table support in dev_pm_opp_set_regulators()

It should be fine to call dev_pm_opp_set_regulators() for all possible
CPUs, even if some of them share the OPP table as the caller may not be
aware of sharing policy.

Lets increment the reference count of the OPP table and return its
pointer. The caller need to call dev_pm_opp_put_regulators() the same
number of times later on to drop all the references.

To avoid adding another counter to count how many times
dev_pm_opp_set_regulators() is called for the same OPP table,
dev_pm_opp_put_regulators() frees the resources on the very first call
made to it, assuming that the caller would be calling it sequentially
for all the CPUs. We can revisit that if that assumption is broken in
the future.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
6 years agoPM / OPP: Fix shared OPP table support in dev_pm_opp_set_prop_name()
Viresh Kumar [Tue, 22 May 2018 11:08:08 +0000 (16:38 +0530)]
PM / OPP: Fix shared OPP table support in dev_pm_opp_set_prop_name()

It should be fine to call dev_pm_opp_set_prop_name() for all possible
CPUs, even if some of them share the OPP table as the caller may not be
aware of sharing policy.

Lets increment the reference count of the OPP table and return its
pointer. The caller need to call dev_pm_opp_put_prop_name() the same
number of times later on to drop all the references.

To avoid adding another counter to count how many times
dev_pm_opp_set_prop_name() is called for the same OPP table,
dev_pm_opp_put_prop_name() frees the resources on the very first call
made to it, assuming that the caller would be calling it sequentially
for all the CPUs. We can revisit that if that assumption is broken in
the future.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
6 years agoPM / OPP: Fix shared OPP table support in dev_pm_opp_set_supported_hw()
Viresh Kumar [Tue, 22 May 2018 11:08:08 +0000 (16:38 +0530)]
PM / OPP: Fix shared OPP table support in dev_pm_opp_set_supported_hw()

It should be fine to call dev_pm_opp_set_supported_hw() for all possible
CPUs, even if some of them share the OPP table as the caller may not be
aware of sharing policy.

Lets increment the reference count of the OPP table and return its
pointer. The caller need to call dev_pm_opp_put_supported_hw() the same
number of times later on to drop all the references.

To avoid adding another counter to count how many times
dev_pm_opp_set_supported_hw() is called for the same OPP table,
dev_pm_opp_put_supported_hw() frees the resources on the very first call
made to it, assuming that the caller would be calling it sequentially
for all the CPUs. We can revisit that if that assumption is broken in
the future.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
6 years agoMerge branch 'opp/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/viresh...
Rafael J. Wysocki [Thu, 17 May 2018 09:59:06 +0000 (11:59 +0200)]
Merge branch 'opp/linux-next' of git://git./linux/kernel/git/vireshk/pm into pm-opp

Merge an OPP fix for v4.18 from Viresh Kumar.

* 'opp/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  PM / OPP: silence an uninitialized variable warning

6 years agoPM / OPP: silence an uninitialized variable warning
Dan Carpenter [Wed, 16 May 2018 09:52:41 +0000 (12:52 +0300)]
PM / OPP: silence an uninitialized variable warning

Smatch complains that it's possible we print "rate" in the debug output
when it hasn't been initialized.  It should be zero on that path.

Fixes: a1e8c13600bf ("PM / OPP: "opp-hz" is optional for power domains")
[ Viresh: Added the Fixes tag ]
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
6 years agoMerge branch 'opp/genpd-pstate-updates' of git://git.kernel.org/pub/scm/linux/kernel...
Rafael J. Wysocki [Mon, 14 May 2018 21:12:48 +0000 (23:12 +0200)]
Merge branch 'opp/genpd-pstate-updates' of git://git./linux/kernel/git/vireshk/pm

Pull Operating Performance Points (OPP) library changes for v4.18
from Viresh Kumar.

* 'opp/genpd-pstate-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  PM / OPP: Remove dev_pm_opp_{un}register_get_pstate_helper()
  PM / OPP: Get performance state using genpd helper
  PM / Domain: Implement of_genpd_opp_to_performance_state()
  PM / Domain: Add support to parse domain's OPP table
  PM / Domain: Add struct device to genpd
  PM / OPP: Implement dev_pm_opp_get_of_node()
  PM / OPP: Implement of_dev_pm_opp_find_required_opp()
  PM / OPP: Implement dev_pm_opp_of_add_table_indexed()
  PM / OPP: "opp-hz" is optional for power domains
  PM / OPP: dt-bindings: Make "opp-hz" optional for power domains
  PM / OPP: dt-bindings: Rename "required-opp" as "required-opps"
  soc/tegra: pmc: Don't allocate struct tegra_powergate on stack

6 years agospi: Respect all error codes from dev_pm_domain_attach()
Ulf Hansson [Thu, 26 Apr 2018 08:53:10 +0000 (10:53 +0200)]
spi: Respect all error codes from dev_pm_domain_attach()

The limitation of being able to check only for -EPROBE_DEFER from
dev_pm_domain_attach() has been removed. Hence let's respect all error
codes and bail out accordingly.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agosoundwire: Respect all error codes from dev_pm_domain_attach()
Ulf Hansson [Thu, 26 Apr 2018 08:53:09 +0000 (10:53 +0200)]
soundwire: Respect all error codes from dev_pm_domain_attach()

The limitation of being able to check only for -EPROBE_DEFER from
dev_pm_domain_attach() has been removed. Hence let's respect all error
codes and bail out accordingly.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agommc: sdio: Respect all error codes from dev_pm_domain_attach()
Ulf Hansson [Thu, 26 Apr 2018 08:53:08 +0000 (10:53 +0200)]
mmc: sdio: Respect all error codes from dev_pm_domain_attach()

The limitation of being able to check only for -EPROBE_DEFER from
dev_pm_domain_attach() has been removed. Hence let's respect all error
codes and bail out accordingly.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoi2c: Respect all error codes from dev_pm_domain_attach()
Ulf Hansson [Thu, 26 Apr 2018 08:53:07 +0000 (10:53 +0200)]
i2c: Respect all error codes from dev_pm_domain_attach()

The limitation of being able to check only for -EPROBE_DEFER from
dev_pm_domain_attach() has been removed. Hence let's respect all error
codes and bail out accordingly.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agodriver core: Respect all error codes from dev_pm_domain_attach()
Ulf Hansson [Thu, 26 Apr 2018 08:53:06 +0000 (10:53 +0200)]
driver core: Respect all error codes from dev_pm_domain_attach()

The limitation of being able to check only for -EPROBE_DEFER from
dev_pm_domain_attach() has been removed. Hence let's respect all error
codes and bail out accordingly.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoamba: Respect all error codes from dev_pm_domain_attach()
Ulf Hansson [Thu, 26 Apr 2018 08:53:05 +0000 (10:53 +0200)]
amba: Respect all error codes from dev_pm_domain_attach()

The limitation of being able to check only for -EPROBE_DEFER from
dev_pm_domain_attach() has been removed. Hence let's respect all error
codes and bail out accordingly.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoPM / Domains: Allow a better error handling of dev_pm_domain_attach()
Ulf Hansson [Wed, 9 May 2018 10:17:52 +0000 (12:17 +0200)]
PM / Domains: Allow a better error handling of dev_pm_domain_attach()

The callers of dev_pm_domain_attach() currently checks the returned error
code for -EPROBE_DEFER and needs to ignore other error codes. This is an
unnecessary limitation, which also leads to a rather strange behaviour in
the error path.

Address this limitation, by changing the return codes from
acpi_dev_pm_attach() and genpd_dev_pm_attach(). More precisely, let them
return 0, when no PM domain is needed for the device and then return 1, in
case the device was successfully attached to its PM domain. In this way,
dev_pm_domain_attach(), gets a better understanding of what happens in the
attach attempts and also allowing its caller to better act on real errors
codes.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoPM / Domains: Check for existing PM domain in dev_pm_domain_attach()
Ulf Hansson [Thu, 26 Apr 2018 08:53:03 +0000 (10:53 +0200)]
PM / Domains: Check for existing PM domain in dev_pm_domain_attach()

Instead of checking if an existing PM domain pointer has been assigned in
genpd_dev_pm_attach() and acpi_dev_pm_attach(), move the check to the
common path in dev_pm_domain_attach(), thus potentially avoid one
unnecessary check.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoPM / Domains: Drop redundant code in genpd while attaching devices
Ulf Hansson [Thu, 26 Apr 2018 08:53:02 +0000 (10:53 +0200)]
PM / Domains: Drop redundant code in genpd while attaching devices

The driver core together with the PM core, nowadays deals with deferring
all probes during the device system sleep phases. Therefore genpd no longer
need to care about this situation, so let's drop the corresponding code.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoPM / Domains: Drop comment in genpd about legacy Samsung DT binding
Ulf Hansson [Thu, 26 Apr 2018 08:53:01 +0000 (10:53 +0200)]
PM / Domains: Drop comment in genpd about legacy Samsung DT binding

The parsing of the Samsung specific DT binding is gone, but the comment in
the function header remained. Let's drop the comment to avoid confusions.

Fixes: 001d50c9a14f (PM / Domains: Remove obsolete "samsung,power-domain" check)
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoPM / Domains: Fix error path during attach in genpd
Ulf Hansson [Thu, 26 Apr 2018 08:53:00 +0000 (10:53 +0200)]
PM / Domains: Fix error path during attach in genpd

In case the PM domain fails to be powered on in genpd_dev_pm_attach(), it
returns -EPROBE_DEFER, but keeping the device attached to its PM domain.
This leads to problems when the next attempt to attach is re-tried. More
precisely, in that situation an -EEXIST error code is returned, because the
device already has its PM domain pointer assigned, from the first attempt.

Now, because of the sloppy error handling by the existing callers of
dev_pm_domain_attach(), probing is allowed to continue when -EEXIST is
returned. However, in such case there are no guarantees that the PM domain
is powered on by genpd, which may lead to hangs when buses/drivers tried to
access their devices.

Let's fix this behaviour, simply by detaching the device when powering on
fails in genpd_dev_pm_attach().

Cc: v4.11+ <stable@vger.kernel.org> # v4.11+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
6 years agoLinux 4.17-rc5
Linus Torvalds [Sun, 13 May 2018 23:15:17 +0000 (16:15 -0700)]
Linux 4.17-rc5

6 years agoMerge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 13 May 2018 17:53:08 +0000 (10:53 -0700)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86/pti updates from Thomas Gleixner:
 "A mixed bag of fixes and updates for the ghosts which are hunting us.

  The scheduler fixes have been pulled into that branch to avoid
  conflicts.

   - A set of fixes to address a khread_parkme() race which caused lost
     wakeups and loss of state.

   - A deadlock fix for stop_machine() solved by moving the wakeups
     outside of the stopper_lock held region.

   - A set of Spectre V1 array access restrictions. The possible
     problematic spots were discuvered by Dan Carpenters new checks in
     smatch.

   - Removal of an unused file which was forgotten when the rest of that
     functionality was removed"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/vdso: Remove unused file
  perf/x86/cstate: Fix possible Spectre-v1 indexing for pkg_msr
  perf/x86/msr: Fix possible Spectre-v1 indexing in the MSR driver
  perf/x86: Fix possible Spectre-v1 indexing for x86_pmu::event_map()
  perf/x86: Fix possible Spectre-v1 indexing for hw_perf_event cache_*
  perf/core: Fix possible Spectre-v1 indexing for ->aux_pages[]
  sched/autogroup: Fix possible Spectre-v1 indexing for sched_prio_to_weight[]
  sched/core: Fix possible Spectre-v1 indexing for sched_prio_to_weight[]
  sched/core: Introduce set_special_state()
  kthread, sched/wait: Fix kthread_parkme() completion issue
  kthread, sched/wait: Fix kthread_parkme() wait-loop
  sched/fair: Fix the update of blocked load when newly idle
  stop_machine, sched: Fix migrate_swap() vs. active_balance() deadlock

6 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 13 May 2018 17:46:53 +0000 (10:46 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Thomas Gleixner:
 "Revert the new NUMA aware placement approach which turned out to
  create more problems than it solved"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "sched/numa: Delay retrying placement for automatic NUMA balance after wake_affine()"

6 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 13 May 2018 17:44:32 +0000 (10:44 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf tooling fixes from Thomas Gleixner:
 "Another small set of perf tooling fixes and updates:

   - Revert "perf pmu: Fix pmu events parsing rule", as it broke Intel
     PT event description parsing (Arnaldo Carvalho de Melo)

   - Sync x86's cpufeatures.h and kvm UAPI headers with the kernel
     sources, suppressing the ABI drift warnings (Arnaldo Carvalho de
     Melo)

   - Remove duplicated entry for westmereep-dp in Intel's mapfile.csv
     (William Cohen)

   - Fix typo in 'perf bench numa' options description (Yisheng Xie)"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "perf pmu: Fix pmu events parsing rule"
  tools headers kvm: Sync ARM UAPI headers with the kernel sources
  tools headers kvm: Sync uapi/linux/kvm.h with the kernel sources
  tools headers: Sync x86 cpufeatures.h with the kernel sources
  perf vendor events intel: Remove duplicated entry for westmereep-dp in mapfile.csv
  perf bench numa: Fix typo in options

6 years agoMerge tag 'dma-mapping-4.17-5' of git://git.infradead.org/users/hch/dma-mapping
Linus Torvalds [Sun, 13 May 2018 17:28:53 +0000 (10:28 -0700)]
Merge tag 'dma-mapping-4.17-5' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fix from Christoph Hellwig:
 "Just one little fix from Jean to avoid a harmless but very annoying
  warning, especially for the drm code"

* tag 'dma-mapping-4.17-5' of git://git.infradead.org/users/hch/dma-mapping:
  swiotlb: silent unwanted warning "buffer is full"

6 years agoMerge tag '4.17-rc4-SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sun, 13 May 2018 01:49:53 +0000 (18:49 -0700)]
Merge tag '4.17-rc4-SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Some small SMB3 fixes for 4.17-rc5, some for stable"

* tag '4.17-rc4-SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6:
  smb3: directory sync should not return an error
  cifs: smb2ops: Fix listxattr() when there are no EAs
  cifs: smbd: Enable signing with smbdirect
  cifs: Allocate validate negotiation request through kmalloc

6 years agoMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Linus Torvalds [Sat, 12 May 2018 17:58:57 +0000 (10:58 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/rzhang/linux

Pull thermal fixes from Zhang Rui:

 - fix NULL pointer dereference on module load/probe for int3403_thermal
   driver

 - fix an emergency shutdown issue on exynos thermal driver

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: exynos: Propagate error value from tmu_read()
  thermal: exynos: Reading temperature makes sense only when TMU is turned on
  thermal: int3403_thermal: Fix NULL pointer deref on module load / probe

6 years agoMerge tag 'for-linus-20180511' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 12 May 2018 17:55:48 +0000 (10:55 -0700)]
Merge tag 'for-linus-20180511' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Just a few NVMe fixes this round - one fixing a use-after-free, one
  fixes the return value after controller reset, and the last one fixes
  an issue where some drives will spuriously EIO. We should get these
  into 4.17"

* tag 'for-linus-20180511' of git://git.kernel.dk/linux-block:
  nvme: add quirk to force medium priority for SQ creation
  nvme: Fix sync controller reset return
  nvme: fix use-after-free in nvme_free_ns_head

6 years agoswiotlb: silent unwanted warning "buffer is full"
Jean Delvare [Sat, 12 May 2018 09:57:37 +0000 (11:57 +0200)]
swiotlb: silent unwanted warning "buffer is full"

If DMA_ATTR_NO_WARN is passed to swiotlb_alloc_buffer(), it should be
passed further down to swiotlb_tbl_map_single(). Otherwise we escape
half of the warnings but still log the other half.

This is one of the multiple causes of spurious warnings reported at:
https://bugs.freedesktop.org/show_bug.cgi?id=104082

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: 0176adb00406 ("swiotlb: refactor coherent buffer allocation")
Cc: Christoph Hellwig <hch@lst.de>
Cc: Christian König <christian.koenig@amd.com>
Cc: Michel Dänzer <michel@daenzer.net>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: stable@vger.kernel.org # v4.16
6 years agoRevert "sched/numa: Delay retrying placement for automatic NUMA balance after wake_af...
Mel Gorman [Wed, 9 May 2018 16:31:15 +0000 (17:31 +0100)]
Revert "sched/numa: Delay retrying placement for automatic NUMA balance after wake_affine()"

This reverts commit 7347fc87dfe6b7315e74310ee1243dc222c68086.

Srikar Dronamra pointed out that while the commit in question did show
a performance improvement on ppc64, it did so at the cost of disabling
active CPU migration by automatic NUMA balancing which was not the intent.
The issue was that a serious flaw in the logic failed to ever active balance
if SD_WAKE_AFFINE was disabled on scheduler domains. Even when it's enabled,
the logic is still bizarre and against the original intent.

Investigation showed that fixing the patch in either the way he suggested,
using the correct comparison for jiffies values or introducing a new
numa_migrate_deferred variable in task_struct all perform similarly to a
revert with a mix of gains and losses depending on the workload, machine
and socket count.

The original intent of the commit was to handle a problem whereby
wake_affine, idle balancing and automatic NUMA balancing disagree on the
appropriate placement for a task. This was particularly true for cases where
a single task was a massive waker of tasks but where wake_wide logic did
not apply.  This was particularly noticeable when a futex (a barrier) woke
all worker threads and tried pulling the wakees to the waker nodes. In that
specific case, it could be handled by tuning MPI or openMP appropriately,
but the behavior is not illogical and was worth attempting to fix. However,
the approach was wrong. Given that we're at rc4 and a fix is not obvious,
it's better to play safe, revert this commit and retry later.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: efault@gmx.de
Cc: ggherdovich@suse.cz
Cc: hpa@zytor.com
Cc: matt@codeblueprint.co.uk
Cc: mpe@ellerman.id.au
Link: http://lkml.kernel.org/r/20180509163115.6fnnyeg4vdm2ct4v@techsingularity.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Sat, 12 May 2018 01:04:12 +0000 (18:04 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "13 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  rbtree: include rcu.h
  scripts/faddr2line: fix error when addr2line output contains discriminator
  ocfs2: take inode cluster lock before moving reflinked inode from orphan dir
  mm, oom: fix concurrent munlock and oom reaper unmap, v3
  mm: migrate: fix double call of radix_tree_replace_slot()
  proc/kcore: don't bounds check against address 0
  mm: don't show nr_indirectly_reclaimable in /proc/vmstat
  mm: sections are not offlined during memory hotremove
  z3fold: fix reclaim lock-ups
  init: fix false positives in W+X checking
  lib/find_bit_benchmark.c: avoid soft lockup in test_find_first_bit()
  KASAN: prohibit KASAN+STRUCTLEAK combination
  MAINTAINERS: update Shuah's email address

6 years agorbtree: include rcu.h
Sebastian Andrzej Siewior [Fri, 11 May 2018 23:02:14 +0000 (16:02 -0700)]
rbtree: include rcu.h

Since commit c1adf20052d8 ("Introduce rb_replace_node_rcu()")
rbtree_augmented.h uses RCU related data structures but does not include
the header file.  It works as long as it gets somehow included before
that and fails otherwise.

Link: http://lkml.kernel.org/r/20180504103159.19938-1-bigeasy@linutronix.de
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoscripts/faddr2line: fix error when addr2line output contains discriminator
Changbin Du [Fri, 11 May 2018 23:02:11 +0000 (16:02 -0700)]
scripts/faddr2line: fix error when addr2line output contains discriminator

When addr2line output contains discriminator, the current awk script
cannot parse it.  This patch fixes it by extracting key words using
regex which is more reliable.

  $ scripts/faddr2line vmlinux tlb_flush_mmu_free+0x26
  tlb_flush_mmu_free+0x26/0x50:
  tlb_flush_mmu_free at mm/memory.c:258 (discriminator 3)
  scripts/faddr2line: eval: line 173: unexpected EOF while looking for matching `)'

Link: http://lkml.kernel.org/r/1525323379-25193-1-git-send-email-changbin.du@intel.com
Fixes: 6870c0165feaa5 ("scripts/faddr2line: show the code context")
Signed-off-by: Changbin Du <changbin.du@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: NeilBrown <neilb@suse.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoocfs2: take inode cluster lock before moving reflinked inode from orphan dir
Ashish Samant [Fri, 11 May 2018 23:02:07 +0000 (16:02 -0700)]
ocfs2: take inode cluster lock before moving reflinked inode from orphan dir

While reflinking an inode, we create a new inode in orphan directory,
then take EX lock on it, reflink the original inode to orphan inode and
release EX lock.  Once the lock is released another node could request
it in EX mode from ocfs2_recover_orphans() which causes downconvert of
the lock, on this node, to NL mode.

Later we attempt to initialize security acl for the orphan inode and
move it to the reflink destination.  However, while doing this we dont
take EX lock on the inode.  This could potentially cause problems
because we could be starting transaction, accessing journal and
modifying metadata of the inode while holding NL lock and with another
node holding EX lock on the inode.

Fix this by taking orphan inode cluster lock in EX mode before
initializing security and moving orphan inode to reflink destination.
Use the __tracker variant while taking inode lock to avoid recursive
locking in the ocfs2_init_security_and_acl() call chain.

Link: http://lkml.kernel.org/r/1523475107-7639-1-git-send-email-ashish.samant@oracle.com
Signed-off-by: Ashish Samant <ashish.samant@oracle.com>
Reviewed-by: Joseph Qi <jiangqi903@gmail.com>
Reviewed-by: Junxiao Bi <junxiao.bi@oracle.com>
Acked-by: Jun Piao <piaojun@huawei.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Changwei Ge <ge.changwei@h3c.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm, oom: fix concurrent munlock and oom reaper unmap, v3
David Rientjes [Fri, 11 May 2018 23:02:04 +0000 (16:02 -0700)]
mm, oom: fix concurrent munlock and oom reaper unmap, v3

Since exit_mmap() is done without the protection of mm->mmap_sem, it is
possible for the oom reaper to concurrently operate on an mm until
MMF_OOM_SKIP is set.

This allows munlock_vma_pages_all() to concurrently run while the oom
reaper is operating on a vma.  Since munlock_vma_pages_range() depends
on clearing VM_LOCKED from vm_flags before actually doing the munlock to
determine if any other vmas are locking the same memory, the check for
VM_LOCKED in the oom reaper is racy.

This is especially noticeable on architectures such as powerpc where
clearing a huge pmd requires serialize_against_pte_lookup().  If the pmd
is zapped by the oom reaper during follow_page_mask() after the check
for pmd_none() is bypassed, this ends up deferencing a NULL ptl or a
kernel oops.

Fix this by manually freeing all possible memory from the mm before
doing the munlock and then setting MMF_OOM_SKIP.  The oom reaper can not
run on the mm anymore so the munlock is safe to do in exit_mmap().  It
also matches the logic that the oom reaper currently uses for
determining when to set MMF_OOM_SKIP itself, so there's no new risk of
excessive oom killing.

This issue fixes CVE-2018-1000200.

Link: http://lkml.kernel.org/r/alpine.DEB.2.21.1804241526320.238665@chino.kir.corp.google.com
Fixes: 212925802454 ("mm: oom: let oom_reap_task and exit_mmap run concurrently")
Signed-off-by: David Rientjes <rientjes@google.com>
Suggested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org> [4.14+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm: migrate: fix double call of radix_tree_replace_slot()
Naoya Horiguchi [Fri, 11 May 2018 23:02:00 +0000 (16:02 -0700)]
mm: migrate: fix double call of radix_tree_replace_slot()

radix_tree_replace_slot() is called twice for head page, it's obviously
a bug.  Let's fix it.

Link: http://lkml.kernel.org/r/20180423072101.GA12157@hori1.linux.bs1.fc.nec.co.jp
Fixes: e71769ae5260 ("mm: enable thp migration for shmem thp")
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reported-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Zi Yan <zi.yan@sent.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoproc/kcore: don't bounds check against address 0
Laura Abbott [Fri, 11 May 2018 23:01:57 +0000 (16:01 -0700)]
proc/kcore: don't bounds check against address 0

The existing kcore code checks for bad addresses against __va(0) with
the assumption that this is the lowest address on the system.  This may
not hold true on some systems (e.g.  arm64) and produce overflows and
crashes.  Switch to using other functions to validate the address range.

It's currently only seen on arm64 and it's not clear if anyone wants to
use that particular combination on a stable release.  So this is not
urgent for stable.

Link: http://lkml.kernel.org/r/20180501201143.15121-1-labbott@redhat.com
Signed-off-by: Laura Abbott <labbott@redhat.com>
Tested-by: Dave Anderson <anderson@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>a
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm: don't show nr_indirectly_reclaimable in /proc/vmstat
Roman Gushchin [Fri, 11 May 2018 23:01:53 +0000 (16:01 -0700)]
mm: don't show nr_indirectly_reclaimable in /proc/vmstat

Don't show nr_indirectly_reclaimable in /proc/vmstat, because there is
no need to export this vm counter to userspace, and some changes are
expected in reclaimable object accounting, which can alter this counter.

Link: http://lkml.kernel.org/r/20180425191422.9159-1-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agomm: sections are not offlined during memory hotremove
Pavel Tatashin [Fri, 11 May 2018 23:01:50 +0000 (16:01 -0700)]
mm: sections are not offlined during memory hotremove

Memory hotplug and hotremove operate with per-block granularity.  If the
machine has a large amount of memory (more than 64G), the size of a
memory block can span multiple sections.  By mistake, during hotremove
we set only the first section to offline state.

The bug was discovered because kernel selftest started to fail:
  https://lkml.kernel.org/r/20180423011247.GK5563@yexl-desktop

After commit, "mm/memory_hotplug: optimize probe routine".  But, the bug
is older than this commit.  In this optimization we also added a check
for sections to be in a proper state during hotplug operation.

Link: http://lkml.kernel.org/r/20180427145257.15222-1-pasha.tatashin@oracle.com
Fixes: 2d070eab2e82 ("mm: consider zone which is not fully populated to have holes")
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Steven Sistare <steven.sistare@oracle.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoz3fold: fix reclaim lock-ups
Vitaly Wool [Fri, 11 May 2018 23:01:46 +0000 (16:01 -0700)]
z3fold: fix reclaim lock-ups

Do not try to optimize in-page object layout while the page is under
reclaim.  This fixes lock-ups on reclaim and improves reclaim
performance at the same time.

[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/20180430125800.444cae9706489f412ad12621@gmail.com
Signed-off-by: Vitaly Wool <vitaly.vul@sony.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Cc: <Oleksiy.Avramchenko@sony.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoinit: fix false positives in W+X checking
Jeffrey Hugo [Fri, 11 May 2018 23:01:42 +0000 (16:01 -0700)]
init: fix false positives in W+X checking

load_module() creates W+X mappings via __vmalloc_node_range() (from
layout_and_allocate()->move_module()->module_alloc()) by using
PAGE_KERNEL_EXEC.  These mappings are later cleaned up via
"call_rcu_sched(&freeinit->rcu, do_free_init)" from do_init_module().

This is a problem because call_rcu_sched() queues work, which can be run
after debug_checkwx() is run, resulting in a race condition.  If hit,
the race results in a nasty splat about insecure W+X mappings, which
results in a poor user experience as these are not the mappings that
debug_checkwx() is intended to catch.

This issue is observed on multiple arm64 platforms, and has been
artificially triggered on an x86 platform.

Address the race by flushing the queued work before running the
arch-defined mark_rodata_ro() which then calls debug_checkwx().

Link: http://lkml.kernel.org/r/1525103946-29526-1-git-send-email-jhugo@codeaurora.org
Fixes: e1a58320a38d ("x86/mm: Warn on W^X mappings")
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reported-by: Timur Tabi <timur@codeaurora.org>
Reported-by: Jan Glauber <jan.glauber@caviumnetworks.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agolib/find_bit_benchmark.c: avoid soft lockup in test_find_first_bit()
Yury Norov [Fri, 11 May 2018 23:01:39 +0000 (16:01 -0700)]
lib/find_bit_benchmark.c: avoid soft lockup in test_find_first_bit()

test_find_first_bit() is intentionally sub-optimal, and may cause soft
lockup due to long time of run on some systems.  So decrease length of
bitmap to traverse to avoid lockup.

With the change below, time of test execution doesn't exceed 0.2 seconds
on my testing system.

Link: http://lkml.kernel.org/r/20180420171949.15710-1-ynorov@caviumnetworks.com
Fixes: 4441fca0a27f5 ("lib: test module for find_*_bit() functions")
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoKASAN: prohibit KASAN+STRUCTLEAK combination
Dmitry Vyukov [Fri, 11 May 2018 23:01:35 +0000 (16:01 -0700)]
KASAN: prohibit KASAN+STRUCTLEAK combination

Currently STRUCTLEAK inserts initialization out of live scope of variables
from KASAN point of view.  This leads to KASAN false positive reports.
Prohibit this combination for now.

Link: http://lkml.kernel.org/r/20180419172451.104700-1-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dennis Zhou <dennisszhou@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMAINTAINERS: update Shuah's email address
Shuah Khan (Samsung OSG) [Fri, 11 May 2018 23:01:32 +0000 (16:01 -0700)]
MAINTAINERS: update Shuah's email address

Update email address in MAINTAINERS file due to IT infrastructure changes
at Samsung.

Link: http://lkml.kernel.org/r/20180501212815.25911-1-shuah@kernel.org
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 11 May 2018 21:14:46 +0000 (14:14 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Verify lengths of keys provided by the user is AF_KEY, from Kevin
    Easton.

 2) Add device ID for BCM89610 PHY. Thanks to Bhadram Varka.

 3) Add Spectre guards to some ATM code, courtesy of Gustavo A. R.
    Silva.

 4) Fix infinite loop in NSH protocol code. To Eric Dumazet we are most
    grateful for this fix.

 5) Line up /proc/net/netlink headers properly. This fix from YU Bo, we
    do appreciate.

 6) Use after free in TLS code. Once again we are blessed by the
    honorable Eric Dumazet with this fix.

 7) Fix regression in TLS code causing stalls on partial TLS records.
    This fix is bestowed upon us by Andrew Tomt.

 8) Deal with too small MTUs properly in LLC code, another great gift
    from Eric Dumazet.

 9) Handle cached route flushing properly wrt. MTU locking in ipv4, to
    Hangbin Liu we give thanks for this.

10) Fix regression in SO_BINDTODEVIC handling wrt. UDP socket demux.
    Paolo Abeni, he gave us this.

11) Range check coalescing parameters in mlx4 driver, thank you Moshe
    Shemesh.

12) Some ipv6 ICMP error handling fixes in rxrpc, from our good brother
    David Howells.

13) Fix kexec on mlx5 by freeing IRQs in shutdown path. Daniel Juergens,
    you're the best!

14) Don't send bonding RLB updates to invalid MAC addresses. Debabrata
    Benerjee saved us!

15) Uh oh, we were leaking in udp_sendmsg and ping_v4_sendmsg. The ship
    is now water tight, thanks to Andrey Ignatov.

16) IPSEC memory leak in ixgbe from Colin Ian King, man we've got holes
    everywhere!

17) Fix error path in tcf_proto_create, Jiri Pirko what would we do
    without you!

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (92 commits)
  net sched actions: fix refcnt leak in skbmod
  net: sched: fix error path in tcf_proto_create() when modules are not configured
  net sched actions: fix invalid pointer dereferencing if skbedit flags missing
  ixgbe: fix memory leak on ipsec allocation
  ixgbevf: fix ixgbevf_xmit_frame()'s return type
  ixgbe: return error on unsupported SFP module when resetting
  ice: Set rq_last_status when cleaning rq
  ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
  mlxsw: core: Fix an error handling path in 'mlxsw_core_bus_device_register()'
  bonding: send learning packets for vlans on slave
  bonding: do not allow rlb updates to invalid mac
  net/mlx5e: Err if asked to offload TC match on frag being first
  net/mlx5: E-Switch, Include VF RDMA stats in vport statistics
  net/mlx5: Free IRQs in shutdown path
  rxrpc: Trace UDP transmission failure
  rxrpc: Add a tracepoint to log ICMP/ICMP6 and error messages
  rxrpc: Fix the min security level for kernel calls
  rxrpc: Fix error reception on AF_INET6 sockets
  rxrpc: Fix missing start of call timeout
  qed: fix spelling mistake: "taskelt" -> "tasklet"
  ...

6 years agoMerge tag 'nfs-for-4.17-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Linus Torvalds [Fri, 11 May 2018 20:56:43 +0000 (13:56 -0700)]
Merge tag 'nfs-for-4.17-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client fixes from Anna Schumaker:
 "These patches fix both a possible corruption during NFSoRDMA MR
  recovery, and a sunrpc tracepoint crash.

  Additionally, Trond has a new email address to put in the MAINTAINERS
  file"

* tag 'nfs-for-4.17-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  Change Trond's email address in MAINTAINERS
  sunrpc: Fix latency trace point crashes
  xprtrdma: Fix list corruption / DMAR errors during MR recovery

6 years agonet sched actions: fix refcnt leak in skbmod
Roman Mashak [Fri, 11 May 2018 18:35:33 +0000 (14:35 -0400)]
net sched actions: fix refcnt leak in skbmod

When application fails to pass flags in netlink TLV when replacing
existing skbmod action, the kernel will leak refcnt:

$ tc actions get action skbmod index 1
total acts 0

        action order 0: skbmod pipe set smac 00:11:22:33:44:55
         index 1 ref 1 bind 0

For example, at this point a buggy application replaces the action with
index 1 with new smac 00:aa:22:33:44:55, it fails because of zero flags,
however refcnt gets bumped:

$ tc actions get actions skbmod index 1
total acts 0

        action order 0: skbmod pipe set smac 00:11:22:33:44:55
         index 1 ref 2 bind 0
$

Tha patch fixes this by calling tcf_idr_release() on existing actions.

Fixes: 86da71b57383d ("net_sched: Introduce skbmod action")
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'ceph-for-4.17-rc5' of git://github.com/ceph/ceph-client
Linus Torvalds [Fri, 11 May 2018 20:36:06 +0000 (13:36 -0700)]
Merge tag 'ceph-for-4.17-rc5' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "These patches fix two long-standing bugs in the DIO code path, one of
  which is a crash trivially triggerable with splice()"

* tag 'ceph-for-4.17-rc5' of git://github.com/ceph/ceph-client:
  ceph: fix iov_iter issues in ceph_direct_read_write()
  libceph: add osd_req_op_extent_osd_data_bvecs()
  ceph: fix rsize/wsize capping in ceph_direct_read_write()

6 years agonet: sched: fix error path in tcf_proto_create() when modules are not configured
Jiri Pirko [Fri, 11 May 2018 15:45:32 +0000 (17:45 +0200)]
net: sched: fix error path in tcf_proto_create() when modules are not configured

In case modules are not configured, error out when tp->ops is null
and prevent later null pointer dereference.

Fixes: 33a48927c193 ("sched: push TC filter protocol creation into a separate function")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'sh-for-4.17-fixes' of git://git.libc.org/linux-sh
Linus Torvalds [Fri, 11 May 2018 20:14:24 +0000 (13:14 -0700)]
Merge tag 'sh-for-4.17-fixes' of git://git.libc.org/linux-sh

Pull arch/sh fixes from Rich Felker:
 "Fixes for critical regressions and a build failure.

  The regressions were introduced in 4.15 and 4.17-rc1 and prevented
  booting on affected systems"

* tag 'sh-for-4.17-fixes' of git://git.libc.org/linux-sh:
  sh: switch to NO_BOOTMEM
  sh: mm: Fix unprotected access to struct device
  sh: fix build failure for J2 cpu with SMP disabled

6 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 11 May 2018 20:09:04 +0000 (13:09 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "There's a small memblock accounting problem when freeing the initrd
  and a Spectre-v2 mitigation for NVIDIA Denver CPUs which just requires
  a match on the CPU ID register.

  Summary:

   - Mitigate Spectre-v2 for NVIDIA Denver CPUs

   - Free memblocks corresponding to freed initrd area"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: capabilities: Add NVIDIA Denver CPU to bp_harden list
  arm64: Add MIDR encoding for NVIDIA CPUs
  arm64: To remove initrd reserved area entry from memblock

6 years agoMerge tag 'powerpc-4.17-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 11 May 2018 20:07:22 +0000 (13:07 -0700)]
Merge tag 'powerpc-4.17-5' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "One fix for an actual regression, the change to the SYSCALL_DEFINE
  wrapper broke FTRACE_SYSCALLS for us due to a name mismatch. There's
  also another commit to the same code to make sure we match all our
  syscalls with various prefixes.

  And then just one minor build fix, and the removal of an unused
  variable that was removed and then snuck back in due to some rebasing.

  Thanks to: Naveen N. Rao"

* tag 'powerpc-4.17-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pseries: Fix CONFIG_NUMA=n build
  powerpc/trace/syscalls: Update syscall name matching logic to account for ppc_ prefix
  powerpc/trace/syscalls: Update syscall name matching logic
  powerpc/64: Remove unused paca->soft_enabled

6 years agoMerge tag 'trace-v4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Fri, 11 May 2018 20:04:35 +0000 (13:04 -0700)]
Merge tag 'trace-v4.17-rc4' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Working on some new updates to trace filtering, I noticed that the
  regex_match_front() test was updated to be limited to the size of the
  pattern instead of the full test string.

  But as the test string is not guaranteed to be nul terminated, it
  still needs to consider the size of the test string"

* tag 'trace-v4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix regex_match_front() to not over compare the test string

6 years agoMerge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Fri, 11 May 2018 19:57:23 +0000 (15:57 -0400)]
Merge branch '10GbE' of git://git./linux/kernel/git/jkirsher/net-queue

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2018-05-11

This series contains fixes to the ice, ixgbe and ixgbevf drivers.

Jeff Shaw provides a fix to ensure rq_last_status gets set, whether or
not the hardware responds with an error in the ice driver.

Emil adds a check for unsupported module during the reset routine for
ixgbe.

Luc Van Oostenryck fixes ixgbevf_xmit_frame() where it was not using the
correct return value (int).

Colin Ian King fixes a potential resource leak in ixgbe, where we were
not freeing ipsec in our cleanup path.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'rxrpc-fixes-20180510' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Fri, 11 May 2018 19:55:57 +0000 (15:55 -0400)]
Merge tag 'rxrpc-fixes-20180510' of git://git./linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
rxrpc: Fixes

Here are three fixes for AF_RXRPC and two tracepoints that were useful for
finding them:

 (1) Fix missing start of expect-Rx-by timeout on initial packet
     transmission so that calls will time out if the peer doesn't respond.

 (2) Fix error reception on AF_INET6 sockets by using the correct family of
     sockopts on the UDP transport socket.

 (3) Fix setting the minimum security level on kernel calls so that they
     can be encrypted.

 (4) Add a tracepoint to log ICMP/ICMP6 and other error reports from the
     transport socket.

 (5) Add a tracepoint to log UDP sendmsg failure so that we can find out if
     transmission failure occurred on the UDP socket.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet sched actions: fix invalid pointer dereferencing if skbedit flags missing
Roman Mashak [Fri, 11 May 2018 14:55:09 +0000 (10:55 -0400)]
net sched actions: fix invalid pointer dereferencing if skbedit flags missing

When application fails to pass flags in netlink TLV for a new skbedit action,
the kernel results in the following oops:

[    8.307732] BUG: unable to handle kernel paging request at 0000000000021130
[    8.309167] PGD 80000000193d1067 P4D 80000000193d1067 PUD 180e0067 PMD 0
[    8.310595] Oops: 0000 [#1] SMP PTI
[    8.311334] Modules linked in: kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd cryptd glue_helper serio_raw
[    8.314190] CPU: 1 PID: 397 Comm: tc Not tainted 4.17.0-rc3+ #357
[    8.315252] RIP: 0010:__tcf_idr_release+0x33/0x140
[    8.316203] RSP: 0018:ffffa0718038f840 EFLAGS: 00010246
[    8.317123] RAX: 0000000000000001 RBX: 0000000000021100 RCX: 0000000000000000
[    8.319831] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000021100
[    8.321181] RBP: 0000000000000000 R08: 000000000004adf8 R09: 0000000000000122
[    8.322645] R10: 0000000000000000 R11: ffffffff9e5b01ed R12: 0000000000000000
[    8.324157] R13: ffffffff9e0d3cc0 R14: 0000000000000000 R15: 0000000000000000
[    8.325590] FS:  00007f591292e700(0000) GS:ffff8fcf5bc40000(0000) knlGS:0000000000000000
[    8.327001] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    8.327987] CR2: 0000000000021130 CR3: 00000000180e6004 CR4: 00000000001606a0
[    8.329289] Call Trace:
[    8.329735]  tcf_skbedit_init+0xa7/0xb0
[    8.330423]  tcf_action_init_1+0x362/0x410
[    8.331139]  ? try_to_wake_up+0x44/0x430
[    8.331817]  tcf_action_init+0x103/0x190
[    8.332511]  tc_ctl_action+0x11a/0x220
[    8.333174]  rtnetlink_rcv_msg+0x23d/0x2e0
[    8.333902]  ? _cond_resched+0x16/0x40
[    8.334569]  ? __kmalloc_node_track_caller+0x5b/0x2c0
[    8.335440]  ? rtnl_calcit.isra.31+0xf0/0xf0
[    8.336178]  netlink_rcv_skb+0xdb/0x110
[    8.336855]  netlink_unicast+0x167/0x220
[    8.337550]  netlink_sendmsg+0x2a7/0x390
[    8.338258]  sock_sendmsg+0x30/0x40
[    8.338865]  ___sys_sendmsg+0x2c5/0x2e0
[    8.339531]  ? pagecache_get_page+0x27/0x210
[    8.340271]  ? filemap_fault+0xa2/0x630
[    8.340943]  ? page_add_file_rmap+0x108/0x200
[    8.341732]  ? alloc_set_pte+0x2aa/0x530
[    8.342573]  ? finish_fault+0x4e/0x70
[    8.343332]  ? __handle_mm_fault+0xbc1/0x10d0
[    8.344337]  ? __sys_sendmsg+0x53/0x80
[    8.345040]  __sys_sendmsg+0x53/0x80
[    8.345678]  do_syscall_64+0x4f/0x100
[    8.346339]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[    8.347206] RIP: 0033:0x7f591191da67
[    8.347831] RSP: 002b:00007fff745abd48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[    8.349179] RAX: ffffffffffffffda RBX: 00007fff745abe70 RCX: 00007f591191da67
[    8.350431] RDX: 0000000000000000 RSI: 00007fff745abdc0 RDI: 0000000000000003
[    8.351659] RBP: 000000005af35251 R08: 0000000000000001 R09: 0000000000000000
[    8.352922] R10: 00000000000005f1 R11: 0000000000000246 R12: 0000000000000000
[    8.354183] R13: 00007fff745afed0 R14: 0000000000000001 R15: 00000000006767c0
[    8.355400] Code: 41 89 d4 53 89 f5 48 89 fb e8 aa 20 fd ff 85 c0 0f 84 ed 00
00 00 48 85 db 0f 84 cf 00 00 00 40 84 ed 0f 85 cd 00 00 00 45 84 e4 <8b> 53 30
74 0d 85 d2 b8 ff ff ff ff 0f 8f b3 00 00 00 8b 43 2c
[    8.358699] RIP: __tcf_idr_release+0x33/0x140 RSP: ffffa0718038f840
[    8.359770] CR2: 0000000000021130
[    8.360438] ---[ end trace 60c66be45dfc14f0 ]---

The caller calls action's ->init() and passes pointer to "struct tc_action *a",
which later may be initialized to point at the existing action, otherwise
"struct tc_action *a" is still invalid, and therefore dereferencing it is an
error as happens in tcf_idr_release, where refcnt is decremented.

So in case of missing flags tcf_idr_release must be called only for
existing actions.

v2:
    - prepare patch for net tree

Fixes: 5e1567aeb7fe ("net sched: skbedit action fix late binding")
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonvme: add quirk to force medium priority for SQ creation
Jens Axboe [Tue, 8 May 2018 16:25:15 +0000 (10:25 -0600)]
nvme: add quirk to force medium priority for SQ creation

Some P3100 drives have a bug where they think WRRU (weighted round robin)
is always enabled, even though the host doesn't set it. Since they think
it's enabled, they also look at the submission queue creation priority. We
used to set that to MEDIUM by default, but that was removed in commit
81c1cd98351b. This causes various issues on that drive. Add a quirk to
still set MEDIUM priority for that controller.

Fixes: 81c1cd98351b ("nvme/pci: Don't set reserved SQ create flags")
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Keith Busch <keith.busch@intel.com>
6 years agoMerge tag 'for-linus-4.17-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 11 May 2018 19:30:34 +0000 (12:30 -0700)]
Merge tag 'for-linus-4.17-rc5-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fix from Juergen Gross:
 "One fix for the kernel running as a fully virtualized guest using PV
  drivers on old Xen hypervisor versions"

* tag 'for-linus-4.17-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: Reset VCPU0 info pointer after shared_info remap

6 years agoixgbe: fix memory leak on ipsec allocation
Colin Ian King [Wed, 9 May 2018 13:58:48 +0000 (14:58 +0100)]
ixgbe: fix memory leak on ipsec allocation

The error clean up path kfree's adapter->ipsec and should be
instead kfree'ing ipsec. Fix this.  Also, the err1 error exit path
does not need to kfree ipsec because this failure path was for
the failed allocation of ipsec.

Detected by CoverityScan, CID#146424 ("Resource Leak")

Fixes: 63a67fe229ea ("ixgbe: add ipsec offload add and remove SA")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
6 years agoixgbevf: fix ixgbevf_xmit_frame()'s return type
Luc Van Oostenryck [Tue, 24 Apr 2018 13:16:48 +0000 (15:16 +0200)]
ixgbevf: fix ixgbevf_xmit_frame()'s return type

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, but the implementation in this
driver returns an 'int'.

Fix this by returning 'netdev_tx_t' in this driver too.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
6 years agoixgbe: return error on unsupported SFP module when resetting
Emil Tantilov [Fri, 20 Apr 2018 00:06:57 +0000 (17:06 -0700)]
ixgbe: return error on unsupported SFP module when resetting

Add check for unsupported module and return the error code.
This fixes a Coverity hit due to unused return status from setup_sfp.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
6 years agoice: Set rq_last_status when cleaning rq
Jeff Shaw [Wed, 18 Apr 2018 18:23:27 +0000 (11:23 -0700)]
ice: Set rq_last_status when cleaning rq

Prior to this commit, the rq_last_status was only set when hardware
responded with an error. This leads to rq_last_status being invalid
in the future when hardware eventually responds without error. This
commit resolves the issue by unconditionally setting rq_last_status
with the value returned in the descriptor.

Fixes: 940b61af02f4 ("ice: Initialize PF and setup miscellaneous
interrupt")

Signed-off-by: Jeff Shaw <jeffrey.b.shaw@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
6 years agoChange Trond's email address in MAINTAINERS
Trond Myklebust [Fri, 11 May 2018 18:13:57 +0000 (14:13 -0400)]
Change Trond's email address in MAINTAINERS

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
6 years agosh: switch to NO_BOOTMEM
Rob Herring [Fri, 11 May 2018 13:45:59 +0000 (08:45 -0500)]
sh: switch to NO_BOOTMEM

Commit 0fa1c579349f ("of/fdt: use memblock_virt_alloc for early alloc")
inadvertently switched the DT unflattening allocations from memblock to
bootmem which doesn't work because the unflattening happens before
bootmem is initialized. Swapping the order of bootmem init and
unflattening could also fix this, but removing bootmem is desired. So
enable NO_BOOTMEM on SH like other architectures have done.

Fixes: 0fa1c579349f ("of/fdt: use memblock_virt_alloc for early alloc")
Reported-by: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rich Felker <dalias@libc.org>
6 years agommap: introduce sane default mmap limits
Linus Torvalds [Fri, 11 May 2018 16:52:01 +0000 (09:52 -0700)]
mmap: introduce sane default mmap limits

The internal VM "mmap()" interfaces are based on the mmap target doing
everything using page indexes rather than byte offsets, because
traditionally (ie 32-bit) we had the situation that the byte offset
didn't fit in a register.  So while the mmap virtual address was limited
by the word size of the architecture, the backing store was not.

So we're basically passing "pgoff" around as a page index, in order to
be able to describe backing store locations that are much bigger than
the word size (think files larger than 4GB etc).

But while this all makes a ton of sense conceptually, we've been dogged
by various drivers that don't really understand this, and internally
work with byte offsets, and then try to work with the page index by
turning it into a byte offset with "pgoff << PAGE_SHIFT".

Which obviously can overflow.

Adding the size of the mapping to it to get the byte offset of the end
of the backing store just exacerbates the problem, and if you then use
this overflow-prone value to check various limits of your device driver
mmap capability, you're just setting yourself up for problems.

The correct thing for drivers to do is to do their limit math in page
indices, the way the interface is designed.  Because the generic mmap
code _does_ test that the index doesn't overflow, since that's what the
mmap code really cares about.

HOWEVER.

Finding and fixing various random drivers is a sisyphean task, so let's
just see if we can just make the core mmap() code do the limiting for
us.  Realistically, the only "big" backing stores we need to care about
are regular files and block devices, both of which are known to do this
properly, and which have nice well-defined limits for how much data they
can access.

So let's special-case just those two known cases, and then limit other
random mmap users to a backing store that still fits in "unsigned long".
Realistically, that's not much of a limit at all on 64-bit, and on
32-bit architectures the only worry might be the GPU drivers, which can
have big physical address spaces.

To make it possible for drivers like that to say that they are 64-bit
clean, this patch does repurpose the "FMODE_UNSIGNED_OFFSET" bit in the
file flags to allow drivers to mark their file descriptors as safe in
the full 64-bit mmap address space.

[ The timing for doing this is less than optimal, and this should really
  go in a merge window. But realistically, this needs wide testing more
  than it needs anything else, and being main-line is the only way to do
  that.

  So the earlier the better, even if it's outside the proper development
  cycle        - Linus ]

Cc: Kees Cook <keescook@chromium.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agonvme: Fix sync controller reset return
Charles Machalow [Thu, 10 May 2018 23:01:38 +0000 (16:01 -0700)]
nvme: Fix sync controller reset return

If a controller reset is requested while the device has no namespaces,
we were incorrectly returning ENETRESET. This patch adds the check for
ADMIN_ONLY controller state to indicate a successful reset.

Fixes: 8000d1fdb0  ("nvme-rdma: fix sysfs invoked reset_ctrl error flow ")
Cc: <stable@vger.kernel.org>
Signed-off-by: Charles Machalow <charles.machalow@intel.com>
[changelog]
Signed-off-by: Keith Busch <keith.busch@intel.com>
6 years agoMerge tag 'pm-4.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 11 May 2018 16:49:02 +0000 (09:49 -0700)]
Merge tag 'pm-4.17-rc5' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix two PCI power management regressions from the 4.13 cycle and
  one cpufreq schedutil governor bug introduced during the 4.12 cycle,
  drop a stale comment from the schedutil code and fix two mistakes in
  docs.

  Specifics:

   - Restore device_may_wakeup() check in pci_enable_wake() removed
     inadvertently during the 4.13 cycle to prevent systems from drawing
     excessive power when suspended or off, among other things (Rafael
     Wysocki).

   - Fix pci_dev_run_wake() to properly handle devices that only can
     signal PME# when in the D3cold power state (Kai Heng Feng).

   - Fix the schedutil cpufreq governor to avoid using UINT_MAX as the
     new CPU frequency in some cases due to a missing check (Rafael
     Wysocki).

   - Remove a stale comment regarding worker kthreads from the schedutil
     cpufreq governor (Juri Lelli).

   - Fix a copy-paste mistake in the intel_pstate driver documentation
     (Juri Lelli).

   - Fix a typo in the system sleep states documentation (Jonathan
     Neuschäfer)"

* tag 'pm-4.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PCI / PM: Check device_may_wakeup() in pci_enable_wake()
  PCI / PM: Always check PME wakeup capability for runtime wakeup support
  cpufreq: schedutil: Avoid using invalid next_freq
  cpufreq: schedutil: remove stale comment
  PM: docs: intel_pstate: fix Active Mode w/o HWP paragraph
  PM: docs: sleep-states: Fix a typo ("includig")

6 years agoMerge tag 'mtd/fixes-for-4.17-rc5' of git://git.infradead.org/linux-mtd
Linus Torvalds [Fri, 11 May 2018 16:46:14 +0000 (09:46 -0700)]
Merge tag 'mtd/fixes-for-4.17-rc5' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Boris Brezillon:

 - make nand_soft_waitrdy() wait tWB before polling the status REG

 - fix BCH write in the the Marvell NAND controller driver

 - fix wrong picosec to msec conversion in the Marvell NAND controller
   driver

 - fix DMA handling in the TI OneNAND controllre driver

* tag 'mtd/fixes-for-4.17-rc5' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: Make sure we wait tWB before polling the STATUS reg
  mtd: rawnand: marvell: fix command xtype in BCH write hook
  mtd: rawnand: marvell: pass ms delay to wait_op
  mtd: onenand: omap2: Disable DMA for HIGHMEM buffers

6 years agoMerge tag 'mlx5-fixes-2018-05-10' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Fri, 11 May 2018 16:26:29 +0000 (12:26 -0400)]
Merge tag 'mlx5-fixes-2018-05-10' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2018-05-10

the following series includes some fixes for mlx5 core driver.
Please pull and let me know if there's any problem.

For -stable v4.5
("net/mlx5: E-Switch, Include VF RDMA stats in vport statistics")

For -stable v4.10
("net/mlx5e: Err if asked to offload TC match on frag being first")
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'drm-fixes-for-v4.17-rc5' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 11 May 2018 16:18:02 +0000 (09:18 -0700)]
Merge tag 'drm-fixes-for-v4.17-rc5' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "nouveau, amdgpu, i915, vc4, omap, exynos and atomic fixes.

  As last week seemed a bit slow, we got a few more fixes this week.

  The main stuff is two weeks of fixes for amdgpu, some missing bits of
  vega12 atom firmware support were added, and some power management
  fixes.

  Nouveau got two regression fixes for an DP MST deadlock and a random
  oops fix.

  i915 got an LVDS panel timeout fix 2 WARN fixes.

  exynos fixed a pagefault issue in the mixer driver.

  vc4 has an oops fix.

  omap had a bunch of uninit var and error-checking fixes. Two atomic
  modesetting state fixes.

  One minor agp cleanup patch"

* tag 'drm-fixes-for-v4.17-rc5' of git://people.freedesktop.org/~airlied/linux: (30 commits)
  drm/amd/pp: Fix performance drop on Fiji
  drm/nouveau: Fix deadlock in nv50_mstm_register_connector()
  drm/nouveau/ttm: don't dereference nvbo::cli, it can outlive client
  agp: uninorth: make two functions static
  drm/amd/pp: Refine the output of pp_power_profile_mode on VI
  drm/amdgpu: Switch to interruptable wait to recover from ring hang.
  drm/ttm: Use GFP_TRANSHUGE_LIGHT for allocating huge pages
  drm/amd/display: Use kvzalloc for potentially large allocations
  drm/amd/display: Don't return ddc result and read_bytes in same return value
  drm/amd/display: Add get_firmware_info_v3_2 for VG12
  drm/amd: Add BIOS smu_info v3_3 required struct def.
  drm/amd/display: Add VG12 ASIC IDs
  drm/vc4: Fix scaling of uni-planar formats
  drm/exynos: hdmi: avoid duplicating drm_bridge_attach
  drm/i915: Fix drm:intel_enable_lvds ERROR message in kernel log
  drm/i915: Correctly populate user mode h/vdisplay with pipe src size during readout
  drm/i915: Adjust eDP's logical vco in a reliable place.
  drm/bridge/sii8620: add Kconfig dependency on extcon
  drm/omap: handle alloc failures in omap_connector
  drm/omap: add missing linefeeds to prints
  ...

6 years agoipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
Andrey Ignatov [Thu, 10 May 2018 17:59:34 +0000 (10:59 -0700)]
ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg

Fix more memory leaks in ip_cmsg_send() callers. Part of them were fixed
earlier in 919483096bfe.

* udp_sendmsg one was there since the beginning when linux sources were
  first added to git;
* ping_v4_sendmsg one was copy/pasted in c319b4d76b9e.

Whenever return happens in udp_sendmsg() or ping_v4_sendmsg() IP options
have to be freed if they were allocated previously.

Add label so that future callers (if any) can use it instead of kfree()
before return that is easy to forget.

Fixes: c319b4d76b9e (net: ipv4: add IPPROTO_ICMP socket kind)
Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: core: Fix an error handling path in 'mlxsw_core_bus_device_register()'
Christophe JAILLET [Thu, 10 May 2018 11:26:16 +0000 (13:26 +0200)]
mlxsw: core: Fix an error handling path in 'mlxsw_core_bus_device_register()'

Resources are not freed in the reverse order of the allocation.
Labels are also mixed-up.

Fix it and reorder code and labels in the error handling path of
'mlxsw_core_bus_device_register()'

Fixes: ef3116e5403e ("mlxsw: spectrum: Register KVD resources with devlink")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'bonding-bug-fixes-and-regressions'
David S. Miller [Fri, 11 May 2018 15:50:41 +0000 (11:50 -0400)]
Merge branch 'bonding-bug-fixes-and-regressions'

Debabrata Banerjee says:

====================
bonding: bug fixes and regressions

Fixes to bonding driver for balance-alb mode, suitable for stable.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobonding: send learning packets for vlans on slave
Debabrata Banerjee [Wed, 9 May 2018 23:32:11 +0000 (19:32 -0400)]
bonding: send learning packets for vlans on slave

There was a regression at some point from the intended functionality of
commit f60c3704e87d ("bonding: Fix alb mode to only use first level
vlans.")

Given the return value vlan_get_encap_level() we need to store the nest
level of the bond device, and then compare the vlan's encap level to
this. Without this, this check always fails and learning packets are
never sent.

In addition, this same commit caused a regression in the behavior of
balance_alb, which requires learning packets be sent for all interfaces
using the slave's mac in order to load balance properly. For vlan's
that have not set a user mac, we can send after checking one bit.
Otherwise we need send the set mac, albeit defeating rx load balancing
for that vlan.

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobonding: do not allow rlb updates to invalid mac
Debabrata Banerjee [Wed, 9 May 2018 23:32:10 +0000 (19:32 -0400)]
bonding: do not allow rlb updates to invalid mac

Make sure multicast, broadcast, and zero mac's cannot be the output of rlb
updates, which should all be directed arps. Receive load balancing will be
collapsed if any of these happen, as the switch will broadcast.

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotracing: Fix regex_match_front() to not over compare the test string
Steven Rostedt (VMware) [Wed, 9 May 2018 15:59:32 +0000 (11:59 -0400)]
tracing: Fix regex_match_front() to not over compare the test string

The regex match function regex_match_front() in the tracing filter logic,
was fixed to test just the pattern length from testing the entire test
string. That is, it went from strncmp(str, r->pattern, len) to
strcmp(str, r->pattern, r->len).

The issue is that str is not guaranteed to be nul terminated, and if r->len
is greater than the length of str, it can access more memory than is
allocated.

The solution is to add a simple test if (len < r->len) return 0.

Cc: stable@vger.kernel.org
Fixes: 285caad415f45 ("tracing/filters: Fix MATCH_FRONT_ONLY filter matching")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
6 years agoMerge branches 'pm-pci' and 'pm-docs'
Rafael J. Wysocki [Fri, 11 May 2018 13:17:18 +0000 (15:17 +0200)]
Merge branches 'pm-pci' and 'pm-docs'

* pm-pci:
  PCI / PM: Check device_may_wakeup() in pci_enable_wake()
  PCI / PM: Always check PME wakeup capability for runtime wakeup support

* pm-docs:
  PM: docs: intel_pstate: fix Active Mode w/o HWP paragraph
  PM: docs: sleep-states: Fix a typo ("includig")

6 years agoMerge branch 'thermal-soc' into next
Zhang Rui [Fri, 11 May 2018 01:37:21 +0000 (09:37 +0800)]
Merge branch 'thermal-soc' into next

6 years agocompat: fix 4-byte infoleak via uninitialized struct field
Jann Horn [Fri, 11 May 2018 00:19:01 +0000 (02:19 +0200)]
compat: fix 4-byte infoleak via uninitialized struct field

Commit 3a4d44b61625 ("ntp: Move adjtimex related compat syscalls to
native counterparts") removed the memset() in compat_get_timex().  Since
then, the compat adjtimex syscall can invoke do_adjtimex() with an
uninitialized ->tai.

If do_adjtimex() doesn't write to ->tai (e.g.  because the arguments are
invalid), compat_put_timex() then copies the uninitialized ->tai field
to userspace.

Fix it by adding the memset() back.

Fixes: 3a4d44b61625 ("ntp: Move adjtimex related compat syscalls to native counterparts")
Signed-off-by: Jann Horn <jannh@google.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMerge branch 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 11 May 2018 00:37:07 +0000 (10:37 +1000)]
Merge branch 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

Single amdgpu regression fix

* 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux:
  drm/amd/pp: Fix performance drop on Fiji

6 years agosmb3: directory sync should not return an error
Steve French [Thu, 10 May 2018 15:59:37 +0000 (10:59 -0500)]
smb3: directory sync should not return an error

As with NFS, which ignores sync on directory handles,
fsync on a directory handle is a noop for CIFS/SMB3.
Do not return an error on it.  It breaks some database
apps otherwise.

Signed-off-by: Steve French <smfrench@gmail.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
6 years agonet/mlx5e: Err if asked to offload TC match on frag being first
Roi Dayan [Thu, 22 Mar 2018 16:51:37 +0000 (18:51 +0200)]
net/mlx5e: Err if asked to offload TC match on frag being first

The HW doesn't support matching on frag first/later, return error if we are
asked to offload that.

Fixes: 3f7d0eb42d59 ("net/mlx5e: Offload TC matching on packets being IP fragments")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: E-Switch, Include VF RDMA stats in vport statistics
Adi Nissim [Wed, 25 Apr 2018 08:21:32 +0000 (11:21 +0300)]
net/mlx5: E-Switch, Include VF RDMA stats in vport statistics

The host side reporting of VF vport statistics didn't include the VF
RDMA traffic.

Fixes: 3b751a2a418a ("net/mlx5: E-Switch, Introduce get vf statistics")
Signed-off-by: Adi Nissim <adin@mellanox.com>
Reported-by: Ariel Almog <ariela@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: Free IRQs in shutdown path
Daniel Jurgens [Mon, 26 Mar 2018 18:35:29 +0000 (13:35 -0500)]
net/mlx5: Free IRQs in shutdown path

Some platforms require IRQs to be free'd in the shutdown path. Otherwise
they will fail to be reallocated after a kexec.

Fixes: 8812c24d28f4 ("net/mlx5: Add fast unload support in shutdown flow")
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agorxrpc: Trace UDP transmission failure
David Howells [Thu, 10 May 2018 22:26:01 +0000 (23:26 +0100)]
rxrpc: Trace UDP transmission failure

Add a tracepoint to log transmission failure from the UDP transport socket
being used by AF_RXRPC.

Signed-off-by: David Howells <dhowells@redhat.com>
6 years agorxrpc: Add a tracepoint to log ICMP/ICMP6 and error messages
David Howells [Thu, 10 May 2018 22:26:01 +0000 (23:26 +0100)]
rxrpc: Add a tracepoint to log ICMP/ICMP6 and error messages

Add a tracepoint to log received ICMP/ICMP6 events and other error
messages.

Signed-off-by: David Howells <dhowells@redhat.com>
6 years agorxrpc: Fix the min security level for kernel calls
David Howells [Thu, 10 May 2018 22:26:01 +0000 (23:26 +0100)]
rxrpc: Fix the min security level for kernel calls

Fix the kernel call initiation to set the minimum security level for kernel
initiated calls (such as from kAFS) from the sockopt value.

Fixes: 19ffa01c9c45 ("rxrpc: Use structs to hold connection params and protocol info")
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agorxrpc: Fix error reception on AF_INET6 sockets
David Howells [Thu, 10 May 2018 22:26:00 +0000 (23:26 +0100)]
rxrpc: Fix error reception on AF_INET6 sockets

AF_RXRPC tries to turn on IP_RECVERR and IP_MTU_DISCOVER on the UDP socket
it just opened for communications with the outside world, regardless of the
type of socket.  Unfortunately, this doesn't work with an AF_INET6 socket.

Fix this by turning on IPV6_RECVERR and IPV6_MTU_DISCOVER instead if the
socket is of the AF_INET6 family.

Without this, kAFS server and address rotation doesn't work correctly
because the algorithm doesn't detect received network errors.

Fixes: 75b54cb57ca3 ("rxrpc: Add IPv6 support")
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agorxrpc: Fix missing start of call timeout
David Howells [Thu, 10 May 2018 22:26:00 +0000 (23:26 +0100)]
rxrpc: Fix missing start of call timeout

The expect_rx_by call timeout is supposed to be set when a call is started
to indicate that we need to receive a packet by that point.  This is
currently put back every time we receive a packet, but it isn't started
when we first send a packet.  Without this, the call may wait forever if
the server doesn't deign to reply.

Fix this by setting the timeout upon a successful UDP sendmsg call for the
first DATA packet.  The timeout is initiated only for initial transmission
and not for subsequent retries as we don't want the retry mechanism to
extend the timeout indefinitely.

Fixes: a158bdd3247b ("rxrpc: Fix call timeouts")
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agoMerge tag 'linux-can-fixes-for-4.17-20180510' of ssh://gitolite.kernel.org/pub/scm...
David S. Miller [Thu, 10 May 2018 21:57:11 +0000 (17:57 -0400)]
Merge tag 'linux-can-fixes-for-4.17-20180510' of ssh://gitolite./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
this is a pull request for net/master consisting of 2 patches.

Both patches are from Lukas Wunner and fix two problems found in the
hi311x CAN driver under high load situations.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed: fix spelling mistake: "taskelt" -> "tasklet"
Colin Ian King [Thu, 10 May 2018 14:03:27 +0000 (15:03 +0100)]
qed: fix spelling mistake: "taskelt" -> "tasklet"

Trivial fix to spelling mistake in DP_VERBOSE message text

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosctp: remove sctp_chunk_put from fail_mark err path in sctp_ulpevent_make_rcvmsg
Xin Long [Thu, 10 May 2018 09:34:13 +0000 (17:34 +0800)]
sctp: remove sctp_chunk_put from fail_mark err path in sctp_ulpevent_make_rcvmsg

In Commit 1f45f78f8e51 ("sctp: allow GSO frags to access the chunk too"),
it held the chunk in sctp_ulpevent_make_rcvmsg to access it safely later
in recvmsg. However, it also added sctp_chunk_put in fail_mark err path,
which is only triggered before holding the chunk.

syzbot reported a use-after-free crash happened on this err path, where
it shouldn't call sctp_chunk_put.

This patch simply removes this call.

Fixes: 1f45f78f8e51 ("sctp: allow GSO frags to access the chunk too")
Reported-by: syzbot+141d898c5f24489db4aa@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_en: Fix an error handling path in 'mlx4_en_init_netdev()'
Christophe JAILLET [Thu, 10 May 2018 07:06:04 +0000 (09:06 +0200)]
net/mlx4_en: Fix an error handling path in 'mlx4_en_init_netdev()'

If an error occurs, 'mlx4_en_destroy_netdev()' is called.
It then calls 'mlx4_en_free_resources()' which does the needed resources
cleanup.

So, doing some explicit kfree in the error handling path would lead to
some double kfree.

Simplify code to avoid such a case.

Fixes: 67f8b1dcb9ee ("net/mlx4_en: Refactor the XDP forwarding rings scheme")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agohv_netvsc: set master device
Stephen Hemminger [Wed, 9 May 2018 21:09:04 +0000 (14:09 -0700)]
hv_netvsc: set master device

The hyper-v transparent bonding should have used master_dev_link.
The netvsc device should look like a master bond device not
like the upper side of a tunnel.

This makes the semantics the same so that userspace applications
looking at network devices see the correct master relationshipship.

Fixes: 0c195567a8f6 ("netvsc: transparent VF management")
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'mac80211-for-davem-2018-05-09' of git://git.kernel.org/pub/scm/linux/kerne...
David S. Miller [Thu, 10 May 2018 21:34:50 +0000 (17:34 -0400)]
Merge tag 'mac80211-for-davem-2018-05-09' of git://git./linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
We only have a few fixes this time:
 * WMM element validation
 * SAE timeout
 * add-BA timeout
 * docbook parsing
 * a few memory leaks in error paths
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotipc: fix one byte leak in tipc_sk_set_orig_addr()
Eric Dumazet [Wed, 9 May 2018 16:50:22 +0000 (09:50 -0700)]
tipc: fix one byte leak in tipc_sk_set_orig_addr()

sysbot/KMSAN reported an uninit-value in recvmsg() that
I tracked down to tipc_sk_set_orig_addr(), missing
srcaddr->member.scope initialization.

This patches moves srcaddr->sock.scope init to follow
fields order and ease future verifications.

BUG: KMSAN: uninit-value in copy_to_user include/linux/uaccess.h:184 [inline]
BUG: KMSAN: uninit-value in move_addr_to_user+0x32e/0x530 net/socket.c:226
CPU: 0 PID: 4549 Comm: syz-executor287 Not tainted 4.17.0-rc3+ #88
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
 kmsan_internal_check_memory+0x135/0x1e0 mm/kmsan/kmsan.c:1157
 kmsan_copy_to_user+0x69/0x160 mm/kmsan/kmsan.c:1199
 copy_to_user include/linux/uaccess.h:184 [inline]
 move_addr_to_user+0x32e/0x530 net/socket.c:226
 ___sys_recvmsg+0x4e2/0x810 net/socket.c:2285
 __sys_recvmsg net/socket.c:2328 [inline]
 __do_sys_recvmsg net/socket.c:2338 [inline]
 __se_sys_recvmsg net/socket.c:2335 [inline]
 __x64_sys_recvmsg+0x325/0x460 net/socket.c:2335
 do_syscall_64+0x154/0x220 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4455e9
RSP: 002b:00007fe3bd36ddb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004455e9
RDX: 0000000000002002 RSI: 0000000020000400 RDI: 0000000000000003
RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff98ce4b6f R14: 00007fe3bd36e9c0 R15: 0000000000000003

Local variable description: ----addr@___sys_recvmsg
Variable was created at:
 ___sys_recvmsg+0xd5/0x810 net/socket.c:2246
 __sys_recvmsg net/socket.c:2328 [inline]
 __do_sys_recvmsg net/socket.c:2338 [inline]
 __se_sys_recvmsg net/socket.c:2335 [inline]
 __x64_sys_recvmsg+0x325/0x460 net/socket.c:2335

Byte 19 of 32 is uninitialized

Fixes: 31c82a2d9d51 ("tipc: add second source address to recvmsg()/recvfrom()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotc-testing: fix tdc tests for 'bpf' action
Davide Caratti [Wed, 9 May 2018 16:45:42 +0000 (18:45 +0200)]
tc-testing: fix tdc tests for 'bpf' action

- correct a typo in the value of 'matchPattern' of test 282d, potentially
 causing false negative
- allow errors when 'teardown' executes '$TC action flush action bpf' in
 test 282d, to fix false positive when it is run with act_bpf unloaded
- correct the value of 'matchPattern' in test e939, causing false positive
 in case the BPF JIT is enabled

Fixes: 440ea4ae1828 ("tc-testing: add selftests for 'bpf' action")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Lucas Bates <lucasb@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_en: Verify coalescing parameters are in range
Moshe Shemesh [Wed, 9 May 2018 15:35:13 +0000 (18:35 +0300)]
net/mlx4_en: Verify coalescing parameters are in range

Add check of coalescing parameters received through ethtool are within
range of values supported by the HW.
Driver gets the coalescing rx/tx-usecs and rx/tx-frames as set by the
users through ethtool. The ethtool support up to 32 bit value for each.
However, mlx4 modify cq limits the coalescing time parameter and
coalescing frames parameters to 16 bits.
Return out of range error if user tries to set these parameters to
higher values.
Change type of sample-interval and adaptive_rx_coal parameters in mlx4
driver to u32 as the ethtool holds them as u32 and these parameters are
not limited due to mlx4 HW.

Fixes: c27a02cd94d6 ('mlx4_en: Add driver for Mellanox ConnectX 10GbE NIC')
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>