key_notify_sa_flush() and key_notify_policy_flush() miss to initialize
the sadb_msg_reserved member of the broadcasted message and thereby
leak 2 bytes of heap memory to listeners. Fix that.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
It's possible to use AF_INET6 sockets and to connect to an IPv4
destination. After this, socket dst cache is a pointer to a rtable,
not rt6_info.
ip6_sk_dst_check() should check the socket dst cache is IPv6, or else
various corruptions/crashes can happen.
Dave Jones can reproduce immediate crash with
trinity -q -l off -n -c sendmsg -c connect
With help from Hannes Frederic Sowa
Reported-by: Dave Jones <davej@redhat.com>
Reported-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
commit cd1c32ca96 is an early premature
rendition of the patch. Augment it with this delta patch to:
* correctly mark offset and size of the matching bin file
* use __pa instead of __pa_nodebug during AP load
* check for !initrd_start before using it
Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Link: http://lkml.kernel.org/r/20130620152414.GA6676@jshin-Toonie
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
When the kernel (compiled with CONFIG_PREEMPT=n) is performing the
rename of a network interface, it can end up waiting for a workqueue
to complete. If userland is able to invoke a SIOCGIFNAME ioctl or a
SO_BINDTODEVICE getsockopt in between, the kernel will deadlock due to
the fact that read_secklock_begin() will spin forever waiting for the
writer process (the one doing the interface rename) to update the
devnet_rename_seq sequence.
This patch fixes the problem by adding a helper (netdev_get_name())
and using it in the code handling the SIOCGIFNAME ioctl and
SO_BINDTODEVICE setsockopt.
The netdev_get_name() helper uses raw_seqcount_begin() to avoid
spinning forever, waiting for devnet_rename_seq->sequence to become
even. cond_resched() is used in the contended case, before retrying
the access to give the writer process a chance to finish.
The use of raw_seqcount_begin() will incur some unneeded work in the
reader process in the contended case, but this is better than
deadlocking the system.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes a problem with the shared registers mutual
exclusion code and incremental event scheduling by the
generic perf_event code.
There was a bug whereby the mutual exclusion on the shared
registers was not enforced because of incremental scheduling
abort due to event constraints. As an example on Intel
Nehalem, consider the following events:
group1= L1D_CACHE_LD:E_STATE,OFFCORE_RESPONSE_0:PF_RFO,L1D_CACHE_LD:I_STATE
group2= L1D_CACHE_LD:I_STATE
The L1D_CACHE_LD event can only be measured by 2 counters. Yet, there
are 3 instances here. The first group can be scheduled and is committed.
Then, the generic code tries to schedule group2 and this fails (because
there is no more counter to support the 3rd instance of L1D_CACHE_LD).
But in x86_schedule_events() error path, put_event_contraints() is invoked
on ALL the events and not just the ones that just failed. That causes the
"lock" on the shared offcore_response MSR to be released. Yet the first group
is actually scheduled and is exposed to reprogramming of that shared msr by
the sibling HT thread. In other words, there is no guarantee on what is
measured.
This patch fixes the problem by tagging committed events with the
PERF_X86_EVENT_COMMITTED tag. In the error path of x86_schedule_events(),
only the events NOT tagged have their constraint released. The tag
is eventually removed when the event in descheduled.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20130620164254.GA3556@quad
Signed-off-by: Ingo Molnar <mingo@kernel.org>
A simple one liner fix to make module loading work for distros (product
specific kernels tend to have things built in).
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Merge tag 'regulator-v3.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"Fix module loading for tps6586x.
A simple one liner fix to make module loading work for distros
(product specific kernels tend to have things built in)"
* tag 'regulator-v3.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
mfd: tps6586x: correct device name of the regulator cell
Using static data for fields which are accessed by HW will fail if
the driver is build as a module (since this would be vmalloc'ed
memory). This Bug was revealed via
"s390: remove virt_to_phys implementation" - the old virt_to_phys
implementation would have translated the address but it was not
guaranteed that the memory was contiguous.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Using static data for fields which are accessed by HW will fail if
the driver is build as a module (since this would be vmalloc'ed
memory). This Bug was revealed via
"s390: remove virt_to_phys implementation" - the old virt_to_phys
implementation would have translated the address but it was not
guaranteed that the memory was contiguous.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Using static data for fields which are accessed by HW will fail if
the driver is build as a module (since this would be vmalloc'ed
memory). This Bug was revealed via
"s390: remove virt_to_phys implementation" - the old virt_to_phys
implementation would have translated the address but it was not
guaranteed that the memory was contiguous.
Fix it by putting the data on the stack.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
There are three users of adapter interrupts: AP, QDIO and PCI. Each
registers a single adapter interrupt with independent ISCs. Define
a "struct airq" with the interrupt handler, a pointer and a mask for
the local summary indicator and the ISC for the adapter interrupt
source. Convert the indicator array with its fixed number of adapter
interrupt sources per ISE to an array of hlists. This removes the
limitation to 32 adapter interrupts per ISC and allows for arbitrary
memory locations for the local summary indicator.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The per-pci-device 'debug' attribute is ill defined. For each device
it prints the same information, the adapter interrupt bit vector for
irq numbers 0 & 1, the start of the global interrupt summary vector
and the global irq retries counter. Just remove the attribute and
the associated code.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Remove gratuitous brackets in dma_mapping_error.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The patch decomposes the function test_facility() into its API
test_facility() and its implementation __test_facility(). This
allows to reuse the implementation with a different API.
Patch is used to prepare checkin of SIE satellite code.
Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Copy the interrupt parameters from the lowcore to the pt_regs structure
in entry[64].S and reduce the arguments of the low level interrupt handler
to the pt_regs pointer only. In addition move the test-pending-interrupt
loop from do_IRQ to entry[64].S to make sure that interrupt information
is always delivered via pt_regs.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Move the code to issue the set adapter device controls command to
chsc.c and make it accessible for the qdio code via the wrapper
chsc_sadc.
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cleanup the function qdio_setup_get_ssqd. Fix some possible
memleaks and an unchecked allocation and create a wrapper
for SSQD in chsc.c .
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Add a character misc device "sclp_ctl" that allows to run SCCBs
from user space using the SCLP_CTL_SCCB ioctl.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Introduce two new ioctls CHSC_ON_CLOSE_SET and CHSC_ON_CLOSE_REMOVE
that allow to add and remove one CHSC that is unconditionally executed
when the CHSC device node is closed.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
In order to allow serialization of dynamic I/O with this patch
the /dev/chsc character device can only be accessed by one
single opener. Any subsequent open calls are rejected with EBUSY.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This patch adds a new ioctl CHSC_START_SYNC that allows to
execute any synchronous CHSC that is provided by user space.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Get rid of the strlen calls, use the return value of sprintf instead.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The disable slot implementation on s390 currently just detaches the
pci function from the partition - without informing the pci layer.
Fix this by calling pci_stop_and_remove_bus_device prior to the
operation.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Provide wrappers for the [de]configure operations, add some error
handling, and use pci_scan_slot instead of pci_scan_single_device.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Use pcibios_release_device to implement architecture-specific
functionality when a pci device is released. This function
will be called during pci_release_dev.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Platforms may want to provide architecture-specific functionality when
a pci device is released. Add a pcibios_release_device() call that
architectures can override to do so.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
From time to time we need to set the guest storage key. Lets
provide a helper function that handles the changes with all the
right locking and checking.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Add a kernel parameter to be able to specify the number of pages to be
used as output buffer by the line-mode sclp driver and the vt220 sclp
driver. The current number of output pages is 6, if the service element
is unavailable the boot messages alone can fill up the output buffer.
If this happens the system blocks until the service element is working
again. For a large LPAR with many devices it is sensible to have the
ability to increase the output buffer size. To help to debug this
situation add a counter for the page-pool-empty situation and make it
available as a sclp driver attribute.
To avoid the system to stall until the service element works again
add another kernel parameter to allow to drop output buffers.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
virt_to_phys on s390 currently uses the LRA instruction to translate
virtual to physical addresses. This creates an unnecessary overhead
and caused trouble with dma debugging code (when called with an
address pointing to a already unmapped page).
Just get rid of s390's implementation and use the one from
asm-generic/io.h .
Note: with this change virt_to_phys will no longer work on vmalloc'ed
addresses.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Since 9a46ad6d6 "smp: make smp_call_function_many() use logic similar
to smp_call_function_single()" generic_smp_call_function_interrupt()
is only an alias to generic_smp_call_function_single_interrupt().
So remove the superfluous variant.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Remove the unused function qdio_trace_aob.
Acked-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Use the to_pci_dev macro to fetch a pci_dev from a struct device
pointer.
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux
Pull GPIO regression fix from Grant Likely:
"It took a while to work out the correct solution to this regression.
It is sorted now. This branch was constructed and tested by Tony.
I've verified that it builds and signed the tag"
* tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux:
gpio/omap: don't use linear domain mapping for OMAP1
- Fix for an ACPI dock regression introduced by the recent rework of
the ACPI-based PCI hotplug code (acpiphp) that caused it to be
initialized before the ACPI dock driver from Jiang Liu.
- Fix for PCI resources allocation in the ACPI-based PCI hotplug code
(acpiphp) that makes it use the same PCI resources assignment rules
during runtime hotplug that are used during boot from Jiang Liu.
- Fix for ordering and synchronization issues during hot-removal of
PCI devices on docking stations from Rafael J Wysocki.
- Fix for a regression that removed the code to register a hotplug
notificaion handler for for ATA ports/devices inadvertently from
Aaron Lu.
- Fix for a recent cpufreq regression causing a NULL pointer
dereference to trigger in od_set_powersave_bias() in some
situations from Jacob Shin.
/
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Merge tag 'pm+acpi-3.10-late' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull late power management and ACPI fixes from Rafael Wysocki:
"Sorry about the timing of this, but ACPI-based docking stations with
PCI devices on them and ATA bays would be hardly usable with 3.10
without it. We've been working on these fixes for the last couple of
weeks and everyone involved appears to be reasonably comfortable with
them now.
The PM part is one fix for a cpufreq regression introduced recently
- Fix for an ACPI dock regression introduced by the recent rework of
the ACPI-based PCI hotplug code (acpiphp) that caused it to be
initialized before the ACPI dock driver, which is incorrect (ACPI
dock has to be initialized before acpiphp so that acpiphp can
register PCI devices on docking stations with it for PCI hotplug on
re-dock to work). From Jiang Liu.
- Fix for PCI resources allocation in the ACPI-based PCI hotplug code
(acpiphp) that makes it use the same PCI resources assignment rules
during runtime hotplug that are used during boot (the BIOS' choices
are now respected in both cases). This prevents PCI resource
allocation failures during hotplug from happening in some cases.
From Jiang Liu.
- Fix for ordering and synchronization issues during hot-removal of
PCI devices on docking stations. It makes the ACPI dock code carry
out the PCI devices removal synchronously during undock instead of
spawning a separate asynchronous work item to remove each of them
without even bothering to wait for all those work items to
complete. The hot-addition part is changed analogously.
- Fix for a regression (introduced a few releases ago) that removed
the code to register a hotplug notificaion handler for for ATA
ports/devices inadvertently which prevented ATA bays hotplug from
working. The missing code is added back with some improvements.
From Aaron Lu.
- Fix for a recent cpufreq regression causing a NULL pointer
dereference to trigger in od_set_powersave_bias() in some
situations from Jacob Shin"
* tag 'pm+acpi-3.10-late' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: fix NULL pointer deference at od_set_powersave_bias()
libata-acpi: add back ACPI based hotplug functionality
ACPI / dock / PCI: Synchronous handling of dock events for PCI devices
PCI / ACPI: Use boot-time resource allocation rules during hotplug
ACPI / dock: Initialize ACPI dock subsystem upfront
Pull perf fixes from Ingo Molnar:
"Three small fixlets"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hw_breakpoint: Use cpu_possible_mask in {reserve,release}_bp_slot()
hw_breakpoint: Fix cpu check in task_bp_pinned(cpu)
kprobes: Fix arch_prepare_kprobe to handle copy insn failures
Pull ARM fixes from Russell King:
"Another round of ARM fixes. Largest one is the second half of the
PJ4B fix which was pushed in the previous -rc - this one was delayed
because its original caused a build regression while trying to fix a
regression!
As ever, noMMU gets forgotten when fixing problems on MMU, so we have
a noMMU fix for a previous fix included in this set.
A couple of fixes from Lorenzo for problems with the ARM DT CPU code,
and a one liner to remove the buggy 'wait for interrupt' with FA526
cores"
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7773/1: PJ4B: Add support for errata 4742
ARM: 7772/1: Fix missing flush_kernel_dcache_page() for noMMU
ARM: 7763/1: kernel: fix __cpu_logical_map default initialization
ARM: 7762/1: kernel: fix arm_dt_init_cpu_maps() to skip non-cpu nodes
ARM: 7760/1: cpu_fa526_do_idle: remove WFI
related to VLAN tagging FCoE frames.
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Merge tag 'critical_fix_for_3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rwlove/fcoe
Pull FCoE fix from Robert W Love:
"This patch fixes a critical bug that was introduced in 3.9 related to
VLAN tagging FCoE frames"
* tag 'critical_fix_for_3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rwlove/fcoe:
fcoe: Use correct API to set vlan tag for FCoE Ethertype skbs
Pull Ceph fix from Sage Weil:
"This fixes another problem with using v2 images on 3.10 due to the
order in which fields are read from the image header.
Hopefully this is the last one"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
rbd: fetch object order before using it
function-mask DT property is now a mask for a pin at each pin offset
inside a given pincontrol register. Fix DA850 DT data to reflect
this change.
Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
[nsekhar@ti.com: reword commit message for clarity]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This patch adds pcie controller node for exynos5440-ssdk5440,
and also adds a phandle for pin controller node.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Exynos5440 has two PCIe controllers which can be used as root complex
for PCIe interface.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Enable PCIe support for Exynos5440 which has two PCIe controllers.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Exynos5440 has a PCIe controller which can be used as Root Complex.
This driver supports a PCIe controller as Root Complex mode.
Signed-off-by: Surendranath Gurivireddy Balla <suren.reddy@samsung.com>
Signed-off-by: Siva Reddy Kallam <siva.kallam@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Pratyush Anand <pratyush.anand@st.com>
Cc: Mohit KUMAR <Mohit.KUMAR@st.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
