Viresh Kumar [Tue, 6 Aug 2013 17:23:11 +0000 (22:53 +0530)]
cpufreq: Use rwsem for protecting critical sections
Critical sections of the cpufreq core are protected with the help of
the driver module owner's refcount, which isn't the correct approach,
because it causes rmmod to return an error when some routine has
updated that refcount.
Let's use rwsem for this purpose instead. Only
cpufreq_unregister_driver() will use write sem
and everybody else will use read sem.
[rjw: Subject & changelog] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Viresh Kumar [Tue, 6 Aug 2013 17:23:10 +0000 (22:53 +0530)]
cpufreq: Fix broken usage of governor->owner's refcount
The cpufreq governor owner refcount usage is broken. We should only
increment that refcount when a CPUFREQ_GOV_POLICY_INIT event has come
and it should only be decremented if CPUFREQ_GOV_POLICY_EXIT has come.
Currently, there can be situations where the governor is in use, but
we have allowed it to be unloaded which may result in undefined
behavior. Let's fix it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Viresh Kumar [Tue, 6 Aug 2013 17:23:09 +0000 (22:53 +0530)]
cpufreq: Use cpufreq_policy_list for iterating over policies
To iterate over all policies we currently iterate over all CPUs and
then get the policy for each of them. Let's use the newly created
cpufreq_policy_list for this purpose.
[rjw: Changelog] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Lukasz Majewski [Tue, 6 Aug 2013 17:23:08 +0000 (22:53 +0530)]
cpufreq: Store cpufreq policies in a list
Policies available in the cpufreq framework are now linked together.
They are accessible via cpufreq_policy_list defined in the cpufreq
core.
[rjw: Fix from Yinghai Lu folded in] Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Viresh Kumar [Tue, 6 Aug 2013 17:23:06 +0000 (22:53 +0530)]
cpufreq: Use sizeof(*ptr) convetion for computing sizes
Chapter 14 of Documentation/CodingStyle says:
The preferred form for passing a size of a struct is the following:
p = kmalloc(sizeof(*p), ...);
The alternative form where struct name is spelled out hurts
readability and introduces an opportunity for a bug when the pointer
variable type is changed but the corresponding sizeof that is passed
to a memory allocator is not.
This wasn't followed consistently in drivers/cpufreq, let's make it
more consistent by always following this rule.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Viresh Kumar [Tue, 6 Aug 2013 17:23:03 +0000 (22:53 +0530)]
cpufreq: Clean up header files included in the core
This patch addresses the following issues in the header files in the
cpufreq core:
- Include headers in ascending order, so that we don't add same
many times by mistake.
- <asm/> must be included after <linux/>, so that they override
whatever they need to.
- Remove unnecessary includes.
- Don't include files already included by cpufreq.h or
cpufreq_governor.h.
[rjw: Changelog] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Merge branch 'pm-cpufreq-ondemand' into pm-cpufreq
* pm-cpufreq:
cpufreq: Remove unused function __cpufreq_driver_getavg()
cpufreq: Remove unused APERF/MPERF support
cpufreq: ondemand: Change the calculation of target frequency
Viresh Kumar [Sat, 3 Aug 2013 23:20:07 +0000 (01:20 +0200)]
cpufreq: Pass policy to cpufreq_add_policy_cpu()
The caller of cpufreq_add_policy_cpu() already has a pointer to the
policy structure and there is no need to look it up again in
cpufreq_add_policy_cpu(). Let's pass it directly.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpufreq: Avoid double kobject_put() for the same kobject in error code path
The only case triggering a jump to the err_out_unregister label in
__cpufreq_add_dev() is when cpufreq_add_dev_interface() fails.
However, if cpufreq_add_dev_interface() fails, it calls kobject_put()
for the policy kobject in its error code path and since that causes
the kobject's refcount to become 0, the additional kobject_put() for
the same kobject under err_out_unregister and the
wait_for_completion() following it are pointless, so drop them.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
cpufreq: Do not hold driver module references for additional policy CPUs
The cpufreq core is a little inconsistent in the way it uses the
driver module refcount.
Namely, if __cpufreq_add_dev() is called for a CPU that doesn't
share the policy object with any other CPUs, the driver module
refcount it grabs to start with will be dropped by it before
returning and will be equal to whatever it had been before that
function was invoked.
However, if the given CPU does share the policy object with other
CPUs, either cpufreq_add_policy_cpu() is called to link the new CPU
to the existing policy, or cpufreq_add_dev_symlink() is used to link
the other CPUs sharing the policy with it to the just created policy
object. In that case, because both cpufreq_add_policy_cpu() and
cpufreq_add_dev_symlink() call cpufreq_cpu_get() for the given
policy (the latter possibly many times) without the balancing
cpufreq_cpu_put() (unless there is an error), the driver module
refcount will be left by __cpufreq_add_dev() with a nonzero value
(different from the initial one).
To remove that inconsistency make cpufreq_add_policy_cpu() execute
cpufreq_cpu_put() for the given policy before returning, which
decrements the driver module refcount so that it will be equal to its
initial value after __cpufreq_add_dev() returns. Also remove the
cpufreq_cpu_get() call from cpufreq_add_dev_symlink(), since both the
policy refcount and the driver module refcount are nonzero when it is
called and they don't need to be bumped up by it.
Accordingly, drop the cpufreq_cpu_put() from __cpufreq_remove_dev(),
since it is only necessary to balance the cpufreq_cpu_get() called
by cpufreq_add_policy_cpu() or cpufreq_add_dev_symlink().
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
cpufreq: Don't pass CPU to cpufreq_add_dev_{symlink|interface}()
Pointer to struct cpufreq_policy is already passed to these routines
and we don't need to send policy->cpu to them as well. So, get rid
of this extra argument and use policy->cpu everywhere.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpufreq: Remove extra variables from cpufreq_add_dev_symlink()
We call cpufreq_cpu_get() in cpufreq_add_dev_symlink() to increase usage
refcount of policy, but not to get a policy for the given CPU. So, we
don't really need to capture the return value of this routine. We can
simply use policy passed as an argument to cpufreq_add_dev_symlink().
Moreover debug print is rewritten to make it more clear.
[rjw: Changelog] Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpufreq: Perform light-weight init/teardown during suspend/resume
Now that we have the infrastructure to perform a light-weight init/tear-down,
use that in the cpufreq CPU hotplug notifier when invoked from the
suspend/resume path.
This also ensures that the file permissions of the cpufreq sysfs files are
preserved across suspend/resume, something which commit a66b2e (cpufreq:
Preserve sysfs files across suspend/resume) originally intended to do, but
had to be reverted due to other problems.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpufreq: Preserve policy structure across suspend/resume
To perform light-weight cpu-init and teardown in the cpufreq subsystem
during suspend/resume, we need to separate out the 2 main functionalities
of the cpufreq CPU hotplug callbacks, as outlined below:
1. Init/tear-down of core cpufreq and CPU-specific components, which are
critical to the correct functioning of the cpufreq subsystem.
2. Init/tear-down of cpufreq sysfs files during suspend/resume.
The first part requires accurate updates to the policy structure such as
its ->cpus and ->related_cpus masks, whereas the second part requires that
the policy->kobj structure is not released or re-initialized during
suspend/resume.
To handle both these requirements, we need to allow updates to the policy
structure throughout suspend/resume, but prevent the structure from getting
freed up. Also, we must have a mechanism by which the cpu-up callbacks can
restore the policy structure, without allocating things afresh. (That also
helps avoid memory leaks).
To achieve this, we use 2 schemes:
a. Use a fallback per-cpu storage area for preserving the policy structures
during suspend, so that they can be restored during resume appropriately.
b. Use the 'frozen' flag to determine when to free or allocate the policy
structure vs when to restore the policy from the saved fallback storage.
Thus we can successfully preserve the structure across suspend/resume.
Effectively, this helps us complete the separation of the 'light-weight'
and the 'full' init/tear-down sequences in the cpufreq subsystem, so that
this can be made use of in the suspend/resume scenario.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpufreq: Introduce a flag ('frozen') to separate full vs temporary init/teardown
During suspend/resume we would like to do a light-weight init/teardown of
CPUs in the cpufreq subsystem and preserve certain things such as sysfs files
etc across suspend/resume transitions. Add a flag called 'frozen' to help
distinguish the full init/teardown sequence from the light-weight one.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpufreq: Extract the handover of policy cpu to a helper function
During cpu offline, when the policy->cpu is going down, some other CPU
present in the policy->cpus mask is nominated as the new policy->cpu.
Extract this functionality from __cpufreq_remove_dev() and implement
it in a helper function. This helps in upcoming code reorganization.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpufreq: Extract non-interface related stuff from cpufreq_add_dev_interface
cpufreq_add_dev_interface() includes the work of exposing the interface
to the device, as well as a lot of unrelated stuff. Move the latter to
cpufreq_add_dev(), where it is more appropriate.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpufreq: Add helper to perform alloc/free of policy structure
Separate out the allocation of the cpufreq policy structure (along with
its error handling) to a helper function. This makes the code easier to
read and also helps with some upcoming code reorganization.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
cpufreq: Fix misplaced call to cpufreq_update_policy()
The call to cpufreq_update_policy() is placed in the CPU hotplug callback
of cpufreq_stats, which has a higher priority than the CPU hotplug callback
of cpufreq-core. As a result, during CPU_ONLINE/CPU_ONLINE_FROZEN, we end up
calling cpufreq_update_policy() *before* calling cpufreq_add_dev() !
And for uninitialized CPUs, it just returns silently, not doing anything.
To add to that, cpufreq_stats is not even the right place to call
cpufreq_update_policy() to begin with. The cpufreq core ought to handle
this in its own callback, from an elegance/relevance perspective.
So move the invocation of cpufreq_update_policy() to cpufreq_cpu_callback,
and place it *after* cpufreq_add_dev().
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linus Torvalds [Sun, 4 Aug 2013 18:46:07 +0000 (11:46 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
"Two fixes for slave dmaengine. The first fixes cyclic dma transfers
for pl330 and the second one makes us return the correct error code on
probe"
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
dma: pl330: Fix cyclic transfers
pch_dma: fix error return code in pch_dma_probe()
Linus Torvalds [Sun, 4 Aug 2013 18:44:18 +0000 (11:44 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fix from Dave Airlie:
"Just a quick fix that a few people have reported, be nice to have in
asap"
The drm tree seems to be very confused about 64-bit divides. Here it
uses a slow 64-by-64 bit divide to divide by a small constant. Oh well.
Doesn't look performance-critical, just stupid.
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/radeon: fix 64 bit divide in SI spm code
Hugh Dickins [Sun, 4 Aug 2013 18:30:25 +0000 (11:30 -0700)]
tmpfs: fix SEEK_DATA/SEEK_HOLE regression
Commit 46a1c2c7ae53 ("vfs: export lseek_execute() to modules") broke the
tmpfs SEEK_DATA/SEEK_HOLE implementation, because vfs_setpos() converts
the carefully prepared -ENXIO to -EINVAL. Other filesystems avoid it in
error cases: do the same in tmpfs.
Signed-off-by: Hugh Dickins <hughd@google.com> Cc: Jie Liu <jeff.liu@oracle.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 4 Aug 2013 18:00:43 +0000 (11:00 -0700)]
Merge tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"All small regression or small fixes, nothing surprising at this stage.
- regression fix for intel Mac Mini quirk
- compress ioctl error fix
- ASoC fixes for control change notifications, some UI fixes,
driver-specific fixes (resource leak, build errors, etc)"
* tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Fix missing fixup for Mac Mini with STAC9221
ASoC: wm0010: Fix resource leak
ASoC: au1x: Fix build
ASoC: bf5xx-ac97: Fix compile error with SND_BF5XX_HAVE_COLD_RESET
ASoC: bfin-ac97: Fix prototype error following AC'97 refactoring
ALSA: compress: fix the return value for SNDRV_COMPRESS_VERSION
ASoC: dapm: Fix return value of snd_soc_dapm_put_{volsw,enum_virt}()
1) Don't ignore user initiated wireless regulatory settings on cards
with custom regulatory domains, from Arik Nemtsov.
2) Fix length check of bluetooth information responses, from Jaganath
Kanakkassery.
3) Fix misuse of PTR_ERR in btusb, from Adam Lee.
4) Handle rfkill properly while iwlwifi devices are offline, from
Emmanuel Grumbach.
5) Fix r815x devices DMA'ing to stack buffers, from Hayes Wang.
6) Kernel info leak in ATM packet scheduler, from Dan Carpenter.
7) 8139cp doesn't check for DMA mapping errors, from Neil Horman.
8) Fix bridge multicast code to not snoop when no querier exists,
otherwise mutlicast traffic is lost. From Linus Lüssing.
9) Avoid soft lockups in fib6_run_gc(), from Michal Kubecek.
10) Fix races in automatic address asignment on ipv6, which can result
in incorrect lifetime assignments. From Jiri Benc.
11) Cure build bustage when CONFIG_NET_LL_RX_POLL is not set and rename
it CONFIG_NET_RX_BUSY_POLL to eliminate the last reference to the
original naming of this feature. From Cong Wang.
12) Fix crash in TIPC when server socket creation fails, from Ying Xue.
13) macvlan_changelink() silently succeeds when it shouldn't, from
Michael S Tsirkin.
14) HTB packet scheduler can crash due to sign extension, fix from
Stephen Hemminger.
15) With the cable unplugged, r8169 prints out a message every 10
seconds, make it netif_dbg() instead of netif_warn(). From Peter
Wu.
16) Fix memory leak in rtm_to_ifaddr(), from Daniel Borkmann.
17) sis900 gets spurious TX queue timeouts due to mismanagement of link
carrier state, from Denis Kirjanov.
18) Validate somaxconn sysctl to make sure it fits inside of a u16.
From Roman Gushchin.
19) Fix MAC address filtering on qlcnic, from Shahed Shaikh.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (68 commits)
qlcnic: Fix for flash update failure on 83xx adapter
qlcnic: Fix link speed and duplex display for 83xx adapter
qlcnic: Fix link speed display for 82xx adapter
qlcnic: Fix external loopback test.
qlcnic: Removed adapter series name from warning messages.
qlcnic: Free up memory in error path.
qlcnic: Fix ingress MAC learning
qlcnic: Fix MAC address filter issue on 82xx adapter
net: ethernet: davinci_emac: drop IRQF_DISABLED
netlabel: use domain based selectors when address based selectors are not available
net: check net.core.somaxconn sysctl values
sis900: Fix the tx queue timeout issue
net: rtm_to_ifaddr: free ifa if ifa_cacheinfo processing fails
r8169: remove "PHY reset until link up" log spam
net: ethernet: cpsw: drop IRQF_DISABLED
htb: fix sign extension bug
macvlan: handle set_promiscuity failures
macvlan: better mode validation
tipc: fix oops when creating server socket fails
net: rename CONFIG_NET_LL_RX_POLL to CONFIG_NET_RX_BUSY_POLL
...
Rajesh Borundia [Sat, 3 Aug 2013 03:16:00 +0000 (23:16 -0400)]
qlcnic: Fix link speed and duplex display for 83xx adapter
o Set link speed and duplex to unknown when link is not up.
Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com> Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Rajesh Borundia [Sat, 3 Aug 2013 03:15:59 +0000 (23:15 -0400)]
qlcnic: Fix link speed display for 82xx adapter
o Do not obtain link speed from register when adapter
link is down.
Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com> Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Pratik Pujar [Sat, 3 Aug 2013 03:15:57 +0000 (23:15 -0400)]
qlcnic: Removed adapter series name from warning messages.
Signed-off-by: Pratik Pujar <pratik.pujar@qlogic.com> Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sat, 3 Aug 2013 18:15:03 +0000 (11:15 -0700)]
Merge branch 'for-3.11' of git://linux-nfs.org/~bfields/linux
Pull nfsd bugfixes from Bruce Fields:
"Most of this is due to a screwup on my part -- some gss-proxy crashes
got fixed before the merge window but somehow never made it out of a
temporary git repo on my laptop...."
* 'for-3.11' of git://linux-nfs.org/~bfields/linux:
svcrpc: set cr_gss_mech from gss-proxy as well as legacy upcall
svcrpc: fix kfree oops in gss-proxy code
svcrpc: fix gss-proxy xdr decoding oops
svcrpc: fix gss_rpc_upcall create error
NFSD/sunrpc: avoid deadlock on TCP connection due to memory pressure.
Linus Torvalds [Sat, 3 Aug 2013 18:12:09 +0000 (11:12 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull arm fixes fixes from Russell King:
"This fixes a couple of problems with commit 48be69a026b2 ("ARM: move
signal handlers into a vdso-like page"), one of which was originally
discovered via my testing originally, but the fix for it was never
actually committed.
The other shows up on noMMU builds, and such platforms are extremely
rare and as such are not part of my nightly testing"
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: fix nommu builds with 48be69a02 (ARM: move signal handlers into a vdso-like page)
ARM: fix a cockup in 48be69a02 (ARM: move signal handlers into a vdso-like page)
Russell King [Sat, 3 Aug 2013 09:39:51 +0000 (10:39 +0100)]
ARM: fix nommu builds with 48be69a02 (ARM: move signal handlers into a vdso-like page)
Olof reports that noMMU builds error out with:
arch/arm/kernel/signal.c: In function 'setup_return':
arch/arm/kernel/signal.c:413:25: error: 'mm_context_t' has no member named 'sigpage'
This shows one of the evilnesses of IS_ENABLED(). Get rid of it here
and replace it with #ifdef's - and as no noMMU platform can make use
of sigpage, depend on CONIFG_MMU not CONFIG_ARM_MPU.
Reported-by: Olof Johansson <olof@lixom.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Sat, 3 Aug 2013 09:30:05 +0000 (10:30 +0100)]
ARM: fix a cockup in 48be69a02 (ARM: move signal handlers into a vdso-like page)
Unfortunately, I never committed the fix to a nasty oops which can
occur as a result of that commit:
------------[ cut here ]------------
kernel BUG at /home/olof/work/batch/include/linux/mm.h:414!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 490 Comm: killall5 Not tainted 3.11.0-rc3-00288-gabe0308 #53
task: e90acac0 ti: e9be8000 task.ti: e9be8000
PC is at special_mapping_fault+0xa4/0xc4
LR is at __do_fault+0x68/0x48c
This doesn't show up unless you do quite a bit of testing; a simple
boot test does not do this, so all my nightly tests were passing fine.
The reason for this is that install_special_mapping() expects the
page array to stick around, and as this was only inserting one page
which was stored on the kernel stack, that's why this was blowing up.
Reported-by: Olof Johansson <olof@lixom.net> Tested-by: Olof Johansson <olof@lixom.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Paul Moore [Fri, 2 Aug 2013 18:45:08 +0000 (14:45 -0400)]
netlabel: use domain based selectors when address based selectors are not available
NetLabel has the ability to selectively assign network security labels
to outbound traffic based on either the LSM's "domain" (different for
each LSM), the network destination, or a combination of both. Depending
on the type of traffic, local or forwarded, and the type of traffic
selector, domain or address based, different hooks are used to label the
traffic; the goal being minimal overhead.
Unfortunately, there is a bug such that a system using NetLabel domain
based traffic selectors does not correctly label outbound local traffic
that is not assigned to a socket. The issue is that in these cases
the associated NetLabel hook only looks at the address based selectors
and not the domain based selectors. This patch corrects this by
checking both the domain and address based selectors so that the correct
labeling is applied, regardless of the configuration type.
In order to acomplish this fix, this patch also simplifies some of the
NetLabel domainhash structures to use a more common outbound traffic
mapping type: struct netlbl_dommap_def. This simplifies some of the code
in this patch and paves the way for further simplifications in the
future.
Signed-off-by: Paul Moore <pmoore@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Roman Gushchin [Fri, 2 Aug 2013 14:36:40 +0000 (18:36 +0400)]
net: check net.core.somaxconn sysctl values
It's possible to assign an invalid value to the net.core.somaxconn
sysctl variable, because there is no checks at all.
The sk_max_ack_backlog field of the sock structure is defined as
unsigned short. Therefore, the backlog argument in inet_listen()
shouldn't exceed USHRT_MAX. The backlog argument in the listen() syscall
is truncated to the somaxconn value. So, the somaxconn value shouldn't
exceed 65535 (USHRT_MAX).
Also, negative values of somaxconn are meaningless.
Signed-off-by: Roman Gushchin <klamm@yandex-team.ru> Reported-by: Changli Gao <xiaosuo@gmail.com> Suggested-by: Eric Dumazet <edumazet@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
timer routine checks the link status and if it's up calls
netif_carrier_on() allowing upper layer to start the tx queue
even if the auto-negotiation process is not finished.
Also remove ugly auto-negotiation check from the sis900_start_xmit()
CC: Duan Fugang <B38611@freescale.com> CC: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 2 Aug 2013 21:58:30 +0000 (14:58 -0700)]
Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull infiniband/rdma fixes from Roland Dreier:
- Fixes for the newly merged mlx5 hardware driver
- Stack info leak fixes from Dan Carpenter
- Fixes for pkey table handling with SR-IOV
- A few other small things
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IPoIB: Fix pkey change flow for virtualization environments
IPoIB: Make sure child devices use valid/proper pkeys
IB/core: Create QP1 using the pkey index which contains the default pkey
mlx5_core: Variable may be used uninitialized
mlx5_core: Implement new initialization sequence
mlx5_core: Fix use after free in mlx5_cmd_comp_handler()
IB/mlx5: Fix stack info leak in mlx5_ib_alloc_ucontext()
IB/mlx5: Fix error return code in init_one()
IB/mlx4: Use default pkey when creating tunnel QPs
RDMA/cma: Only call cma_save_ib_info() for CM REQs
RDMA/cma: Fix accessing invalid private data for UD
RDMA/cma: Fix gcc warning
Revert "RDMA/nes: Fix compilation error when nes_debug is enabled"
IB/qib: Add err_decode() call for ring dump
RDMA/cxgb3: Fix stack info leak in iwch_create_cq()
RDMA/nes: Fix info leaks in nes_create_qp() and nes_create_cq()
RDMA/ocrdma: Fix several stack info leaks
RDMA/cxgb4: Fix stack info leak in c4iw_create_qp()
RDMA/ocrdma: Remove unused include
Linus Torvalds [Fri, 2 Aug 2013 21:57:24 +0000 (14:57 -0700)]
Merge tag 'gpio-for-v3.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Yet another GPIO pull request, fixing the fix from the last one. It
turns out that fixing the boot path for device tree boots on OMAP
breaks out antique systems (such as OMAP1) and we need to find a
better way. So we're reverting that "fix" for the moment and thinking
about something better.
Also fixing a build issue on the MSM driver"
* tag 'gpio-for-v3.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio_msm: Fix build error due to missing err.h
Revert "gpio/omap: don't create an IRQ mapping for every GPIO on DT"
Revert "gpio/omap: auto request GPIO as input if used as IRQ via DT"
Revert "gpio/omap: fix build error when OF_GPIO is not defined."
Daniel Borkmann [Fri, 2 Aug 2013 09:32:43 +0000 (11:32 +0200)]
net: rtm_to_ifaddr: free ifa if ifa_cacheinfo processing fails
Commit 5c766d642 ("ipv4: introduce address lifetime") leaves the ifa
resource that was allocated via inet_alloc_ifa() unfreed when returning
the function with -EINVAL. Thus, free it first via inet_free_ifa().
Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Reviewed-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
Lekensteyn [Fri, 2 Aug 2013 08:36:55 +0000 (10:36 +0200)]
r8169: remove "PHY reset until link up" log spam
This message was added in commit a7154cb8 (June 2004, [PATCH] r8169:
link handling and phy reset rework) and is printed every ten seconds
when no cable is connected and runtime power management is disabled.
(Before that commit, "Reset RTL8169s PHY" would be printed instead.)
Signed-off-by: Peter Wu <lekensteyn@gmail.com> Acked-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: David S. Miller <davem@davemloft.net>
When userspace passes a large priority value
the assignment of the unsigned value hopt->prio
to signed int cl->prio causes cl->prio to become negative and the
comparison is with TC_HTB_NUMPRIO is always false.
The result is that HTB crashes by referencing outside
the array when processing packets. With this patch the large value
wraps around like other values outside the normal range.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 2 Aug 2013 21:39:49 +0000 (14:39 -0700)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Ben Herrenschmidt:
"Here is not quite a handful of powerpc fixes for rc3.
The windfarm fix is a regression fix (though not a new one), the PMU
interrupt rename is not a fix per-se but has been submitted a long
time ago and I kept forgetting to put it in (it puts us back in sync
with x86), the other perf bit is just about putting an API/ABI bit
definition in the right place for userspace to consume, and finally,
we have a fix for the VPHN (Virtual Partition Home Node) feature
(notification that the hypervisor is moving nodes around) which could
cause lockups so we may as well fix it now"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/windfarm: Fix noisy slots-fan on Xserve (rm31)
powerpc: VPHN topology change updates all siblings
powerpc/perf: Export PERF_EVENT_CONFIG_EBB_SHIFT to userspace
powerpc: Rename PMU interrupts from CNT to PMI
Linus Torvalds [Fri, 2 Aug 2013 21:37:45 +0000 (14:37 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
"I've thought long and hard about what to say for this pull request,
and I really can't work out anything sane to say to summarise much of
these commits. The problem is, for most of these are, yet again, lots
of small bits scattered around the place without any real overall
theme to them"
Most notable is probably the kuser page helper improvements.
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm: (22 commits)
ARM: Add .text annotations where required after __CPUINIT removal
ARM: 7803/1: Fix deadlock scenario with smp_send_stop()
ARM: make vectors page inaccessible from userspace
ARM: move signal handlers into a vdso-like page
ARM: allow kuser helpers to be removed from the vector page
ARM: update FIQ support for relocation of vectors
ARM: use linker magic for vectors and vector stubs
ARM: move vector stubs
ARM: poison memory between kuser helpers
ARM: poison the vectors page
ARM: 7801/1: v6: prevent gcc 4.5 from reordering extended CP15 reads above is_smp() test
ARM: 7800/1: ARMv7-M: Fix name of NVIC handler function
ARM: Fix sorting of machine- initializers
ARM: 7791/1: a.out: remove partial a.out support
ARM: 7790/1: Fix deferred mm switch on VIVT processors
ARM: 7789/1: Do not run dummy_flush_tlb_a15_erratum() on non-Cortex-A15
ARM: 7787/1: virt: ensure visibility of __boot_cpu_mode
ARM: 7788/1: elf: fix lpae hwcap feature reporting in proc/cpuinfo
ARM: 7786/1: hyp: fix macro parameterisation
ARM: 7785/1: mm: restrict early_alloc to section-aligned memory
...
Linus Torvalds [Fri, 2 Aug 2013 21:36:32 +0000 (14:36 -0700)]
Merge branch 'parisc-3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"The majority of lines changed are due the addition of a defconfig for
the C8000 machine. Even the fix in parisc/kernel/cache.c file is
actually ony a 10-line fix, but the change became bigger (and much
nicer) to avoid errors of the checkpatch script.
Here is the short-changelog:
This round of parisc updates includes mostly fixes for the C8000
workstation. We have a new defconfig file for this machine, as well
as fixes for it's serial port, the AGP driver and the cache routines
to cope with the vmas of the FireGL card in a C8000. The sys32.h
header file was not used and as such it's now gone"
* 'parisc-3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix interrupt routing for C8000 serial ports
parisc: Remove arch/parisc/kernel/sys32.h header
parisc: add defconfig for c8000 machine
parisc: agp/parisc-agp: allow binding of user memory to the AGP GART
parisc: Fix cache routines to ignore vma's with an invalid pfn
Linus Torvalds [Fri, 2 Aug 2013 20:12:52 +0000 (13:12 -0700)]
Merge tag 'pci-v3.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Yinghai fixed a couple regressions: one resource assignment problem
introduced in v3.10 that showed up with SR-IOV on powerpc, and another
SR-IOV hot-remove issue related to refcounting changes we merged for
v3.11.
Yinghai is still working on another SR-IOV-related fix or two, which
will be simpler if pciehp is non-modular, so I included the Kconfig
changes now to get them in earlier.
Finally, a minor fix for the ARM Marvell EBU host bridge driver that
was merged for v3.11
Hotplug:
PCI: pciehp: Fix null pointer deref when hot-removing SR-IOV device
PCI: hotplug: Convert to be builtin only, not modular
PCI: pciehp: Convert pciehp to be builtin only, not modular
Resource allocation:
PCI: Retry allocation of only the resource type that failed
ARM:
PCI: mvebu: Disable prefetchable memory support in PCI-to-PCI bridge"
* tag 'pci-v3.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: mvebu: Disable prefetchable memory support in PCI-to-PCI bridge
PCI: Retry allocation of only the resource type that failed
PCI: pciehp: Convert pciehp to be builtin only, not modular
PCI: hotplug: Convert to be builtin only, not modular
PCI: pciehp: Fix null pointer deref when hot-removing SR-IOV device
Linus Torvalds [Fri, 2 Aug 2013 19:21:32 +0000 (12:21 -0700)]
Merge tag 'pm+acpi-3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
- Revert two cpuidle commits added during the 3.8 development cycle
that turn out to have introduced a significant performance regression
as requested by Jeremy Eder.
- The recent patches that made the freezer less heavy-weight introduced
a regression causing user-space-driven hibernation using the ioctl()
interface to block indefinitely when the hibernate process executes
try_to_freeze(). Fix from Colin Cross addresses this by adding a
process flag to mark the hibernate/suspend process to inform the
freezer that that process should be ignored.
- One of the recent cpufreq reverts uncovered a problem in the core
causing the cpufreq driver module refcount to become negative after a
system suspend-resume cycle. Fix from Rafael J Wysocki.
- The evaluation of the ACPI battery _BIX method has never worked
correctly, because the commit that added support for it forgot to
take the "Revision" field in the return package into account. As a
result, the reading of battery info doesn't work at all on some
systems, which is addressed by a fix from Lan Tianyu.
* tag 'pm+acpi-3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
freezer: set PF_SUSPEND_TASK flag on tasks that call freeze_processes
ACPI / battery: Fix parsing _BIX return value
cpufreq: Fix cpufreq driver module refcount balance after suspend/resume
Revert "cpuidle: Quickly notice prediction failure for repeat mode"
Revert "cpuidle: Quickly notice prediction failure in general case"
Takashi Iwai [Thu, 1 Aug 2013 06:38:27 +0000 (08:38 +0200)]
ALSA: hda - Fix missing fixup for Mac Mini with STAC9221
A fixup for Apple Mac Mini was lost during the adaption to the generic
parser because the fallback for the generic ID 8384:7680 was dropped,
and it resulted in the silence output (and maybe other problems).
Unfortunately, just adding the missing subsystem ID wasn't enough, in
this case. The subsystem ID of this machine is 0000:0100 (what Apple
thought...?), and since snd_hda_pick_fixup() doesn't take the vendor
id zero into account, the driver ignored this entry. Now it's fixed
to regard the vendor id zero as a valid value.
macvlan passthrough mode is special: it's not possible to switch to or
from it through a netlink command.
But if you try, the command will succeed, which is
confusing.
Validate input and return error to user.
Cc: Sridhar Samudrala <sri@us.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
tipc_core_start()
ret = tipc_subscr_start()
ret = tipc_server_start(){
server->enabled = 1;
ret = tipc_open_listening_sock()
}
I.e., the server->enabled flag is unconditionally set to 1, whatever
the return value of tipc_open_listening_sock().
This causes a crash when tipc_core_start() tries to clean up
resources after a failed initialization:
if (ret == failed)
tipc_subscr_stop()
tipc_server_stop(){
if (server->enabled)
tipc_close_conn(){
NULL reference of con->sock-sk
OOPS!
}
}
To avoid this, tipc_server_start() should only set server->enabled
to 1 in case of a succesful socket creation. In case of failure, it
should release all allocated resources before returning.
Problem introduced in commit c5fa7b3cf3cb22e4ac60485fc2dc187fe012910f
("tipc: introduce new TIPC server infrastructure") in v3.11-rc1.
Note that it won't be seen often; it takes a module load under memory
constrained conditions in order to trigger the failure condition.
Signed-off-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Thu, 1 Aug 2013 03:10:25 +0000 (11:10 +0800)]
net: rename CONFIG_NET_LL_RX_POLL to CONFIG_NET_RX_BUSY_POLL
Eliezer renames several *ll_poll to *busy_poll, but forgets
CONFIG_NET_LL_RX_POLL, so in case of confusion, rename it too.
Cc: Eliezer Tamir <eliezer.tamir@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Thu, 1 Aug 2013 03:10:24 +0000 (11:10 +0800)]
net: fix a compile error when CONFIG_NET_LL_RX_POLL is not set
When CONFIG_NET_LL_RX_POLL is not set, I got:
net/socket.c: In function ‘sock_poll’:
net/socket.c:1165:4: error: implicit declaration of function ‘sk_busy_loop’ [-Werror=implicit-function-declaration]
Fix this by adding a nop when !CONFIG_NET_LL_RX_POLL.
Cc: Eliezer Tamir <eliezer.tamir@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net/mlx4_core: VFs must ignore the enable_64b_cqe_eqe module param
Slaves get the 64B CQE/EQE state from QUERY_HCA, not from the module parameter.
If the parameter is set to zero, the slave outputs an incorrect/irrelevant
warning message that 64B CQEs/EQEs are supported but not enabled (even if the
hypervisor has enabled 64B CQEs/EQEs).
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Or Gerlitz [Thu, 1 Aug 2013 16:55:00 +0000 (19:55 +0300)]
net/mlx4_core: Don't give VFs MAC addresses which are derived from the PF MAC
If the user has not assigned a MAC address to a VM, then don't give it MAC which
is based on the PF one. The current derivation scheme is wrong and leads to VM
MAC collisions when the number of cards/hypervisors becomes big enough.
Instead, just give it zeros and let them figure out what to do with that.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Benc [Thu, 1 Aug 2013 08:41:28 +0000 (10:41 +0200)]
ipv6: prevent race between address creation and removal
There's a race in IPv6 automatic addess assignment. The address is created
with zero lifetime when it's added to various address lists. Before it gets
assigned the correct lifetime, there's a window where a new address may be
configured. This causes the semi-initiated address to be deleted in
addrconf_verify.
This was discovered as a reference leak caused by concurrent run of
__ipv6_ifa_notify for both RTM_NEWADDR and RTM_DELADDR with the same
address.
Fix this by setting the lifetime before the address is added to
inet6_addr_lst.
A few notes:
1. In addrconf_prefix_rcv, by setting update_lft to zero, the
if (update_lft) { ... } condition is no longer executed for newly
created addresses. This is okay, as the ifp fields are set in
ipv6_add_addr now and ipv6_ifa_notify is called (and has been called)
through addrconf_dad_start.
2. The removal of the whole block under ifp->lock in inet6_addr_add is okay,
too, as tstamp is initialized to jiffies in ipv6_add_addr.
Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Kubeček [Thu, 1 Aug 2013 08:04:24 +0000 (10:04 +0200)]
ipv6: update ip6_rt_last_gc every time GC is run
As pointed out by Eric Dumazet, net->ipv6.ip6_rt_last_gc should
hold the last time garbage collector was run so that we should
update it whenever fib6_run_gc() calls fib6_clean_all(), not only
if we got there from ip6_dst_gc().
Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Kubeček [Thu, 1 Aug 2013 08:04:14 +0000 (10:04 +0200)]
ipv6: prevent fib6_run_gc() contention
On a high-traffic router with many processors and many IPv6 dst
entries, soft lockup in fib6_run_gc() can occur when number of
entries reaches gc_thresh.
This happens because fib6_run_gc() uses fib6_gc_lock to allow
only one thread to run the garbage collector but ip6_dst_gc()
doesn't update net->ipv6.ip6_rt_last_gc until fib6_run_gc()
returns. On a system with many entries, this can take some time
so that in the meantime, other threads pass the tests in
ip6_dst_gc() (ip6_rt_last_gc is still not updated) and wait for
the lock. They then have to run the garbage collector one after
another which blocks them for quite long.
Resolve this by replacing special value ~0UL of expire parameter
to fib6_run_gc() by explicit "force" parameter to choose between
spin_lock_bh() and spin_trylock_bh() and call fib6_run_gc() with
force=false if gc_thresh is reached but not max_size.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
PCI: mvebu: Disable prefetchable memory support in PCI-to-PCI bridge
The Marvell PCIe driver uses an emulated PCI-to-PCI bridge to be able
to dynamically set up MBus address decoding windows for PCI I/O and
memory regions depending on the PCI devices enumerated by Linux.
However, this emulated PCI-to-PCI bridge logic makes the Linux PCI
core believe that prefetchable memory regions are supported (because
the registers are read/write), while in fact no adress decoding window
is ever created for such regions. Since the Marvell MBus address
decoding windows do not distinguish memory regions and prefetchable
memory regions, this patch takes a simple approach: change the
PCI-to-PCI bridge emulation to let the Linux PCI core know that we
don't support prefetchable memory regions.
To achieve this, we simply make the prefetchable memory base a
read-only register that always returns 0. Reading/writing all the
other prefetchable memory related registers has no effect.
This problem was originally reported by Finn Hoffmann
<finn@uni-bremen.de>, who couldn't get a RTL8111/8168B PCI NIC working
on the NSA310 Kirkwood platform after updating to 3.11-rc. The problem
was that the PCI-to-PCI bridge emulation was making the Linux PCI core
believe that we support prefetchable memory, so the Linux PCI core was
only filling the prefetchable memory base and limit registers, which
does not lead to a MBus window being created. The below patch has been
confirmed by Finn Hoffmann to fix his problem on Kirkwood, and has
otherwise been successfully tested on the Armada XP GP platform with a
e1000e PCIe NIC and a Marvell SATA PCIe card.
Reported-by: Finn Hoffmann <finn@uni-bremen.de> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
David S. Miller [Thu, 1 Aug 2013 19:57:52 +0000 (12:57 -0700)]
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:
====================
This pull request is intended for the 3.11 stream. It is a bit
larger than usual, as it includes pulls from most of my feeder trees
as well...
For the Bluetooth bits, Gustavo says:
"A few fixes and devices ID additions for 3.11:
* There are 4 new ath3k device ids
* Fixed stack memory usage in ath3k.
* Fixed the init process of BlueFRITZ! devices, they were failing to init
due to an unsupported command we sent.
* Fixed wrong use of PTR_ERR in btusb code that was preventing intel devices
to work properly.
* Fixed race condition between hci_register_dev() and hci_dev_open() that
could cause a NULL pointer dereference.
* Fixed race condition that could call hci_req_cmd_complete() and make some
devices to fail as showed in the log added to the commit message."
Regarding the NFC bits, Samuel says:
"We have:
1) A build failure fix for the NCI SPI transport layer due to a
missing CRC_CCITT Kconfig dependency.
2) A netlink command rename: CMD_FW_UPLOAD was merged during the 3.11
merge window but the typical terminology for loading a firmware to a
target is firmware download rather than upload. In order to avoid any
confusion in a file exported to userspace, we rename this command to
CMD_FW_DOWNLOAD."
Samuel's item #2 isn't strictly a fix, but it seems safe and should
avoid confusion in the future.
As for the mac80211 bits, Johannes says:
"I only have three fixes this time, a fix for a suspend regression, a
patch correcting the initiator in regulatory code and one fix for mesh
station powersave."
With respect to the iwlwifi bits, Johannes says:
"We have a scan fix for passive channels, a new PCI device ID for an old
device, a NIC reset fix, an RF-Kill fix, a fix for powersave when GO
interfaces are present as well as an aggregation session fix (for a
corner case) and a workaround for a firmware design issue - it only
supports a single GTK in D3."
Bringing-up the rear with the Atheros trees, Kalle says:
"Geert Uytterhoeven fixed an ath10k build problem when NO_DMA=y. I added
a missing MAINTAINERS entry for ath10k and updated ath6kl git tree
location."
Along with the above...
Arend van Spriel fixes a brcmfmac WARNING when unplugging the device.
Avinash Patil proves a couple of minor mwifiex fixes relating to P2P mode.
Luciano Coelho updates the MAINTAINERS entry for the wilink drivers.
Stanislaw Gruszka brings an rt2x00 fix for a queue start/stop problem.
Stone Piao fixes another mwifiex problem, a command timeout related to P2P mode.
Tomasz Moń corrects an endian problem in mwifiex.
I'll remind my feeder maintainers to slowdown the patchflow.
Beyond that, please let me know if there are problems!
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Wed, 31 Jul 2013 10:37:17 +0000 (11:37 +0100)]
ARM: Add .text annotations where required after __CPUINIT removal
Commit 8bd26e3a7 (arm: delete __cpuinit/__CPUINIT usage from all ARM
users) caused some code to leak into sections which are discarded
through the removal of __CPUINIT annotations. Add appropriate .text
annotations to bring these back into the kernel text.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Stephen Boyd [Tue, 30 Jul 2013 22:09:46 +0000 (23:09 +0100)]
ARM: 7803/1: Fix deadlock scenario with smp_send_stop()
If one process calls sys_reboot and that process then stops other
CPUs while those CPUs are within a spin_lock() region we can
potentially encounter a deadlock scenario like below.
CPU 0 CPU 1
----- -----
spin_lock(my_lock)
smp_send_stop()
<send IPI> handle_IPI()
disable_preemption/irqs
while(1);
<PREEMPT>
spin_lock(my_lock) <--- Waits forever
We shouldn't attempt to run any other tasks after we send a stop
IPI to a CPU so disable preemption so that this task runs to
completion. We use local_irq_disable() here for cross-arch
consistency with x86.
Reported-by: Sundarajan Srinivasan <sundaraj@codeaurora.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Wed, 31 Jul 2013 20:58:56 +0000 (21:58 +0100)]
ARM: make vectors page inaccessible from userspace
If kuser helpers are not provided by the kernel, disable user access to
the vectors page. With the kuser helpers gone, there is no reason for
this page to be visible to userspace.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Tue, 23 Jul 2013 23:29:18 +0000 (00:29 +0100)]
ARM: move signal handlers into a vdso-like page
Move the signal handlers into a VDSO page rather than keeping them in
the vectors page. This allows us to place them randomly within this
page, and also map the page at a random location within userspace
further protecting these code fragments from ROP attacks. The new
VDSO page is also poisoned in the same way as the vector page.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
J. Bruce Fields [Wed, 31 Jul 2013 21:51:42 +0000 (17:51 -0400)]
svcrpc: set cr_gss_mech from gss-proxy as well as legacy upcall
The change made to rsc_parse() in 0dc1531aca7fd1440918bd55844a054e9c29acad "svcrpc: store gss mech in
svc_cred" should also have been propagated to the gss-proxy codepath.
This fixes a crash in the gss-proxy case.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
NFSD/sunrpc: avoid deadlock on TCP connection due to memory pressure.
Since we enabled auto-tuning for sunrpc TCP connections we do not
guarantee that there is enough write-space on each connection to
queue a reply.
If memory pressure causes the window to shrink too small, the request
throttling in sunrpc/svc will not accept any requests so no more requests
will be handled. Even when pressure decreases the window will not
grow again until data is sent on the connection.
This means we get a deadlock: no requests will be handled until there
is more space, and no space will be allocated until a request is
handled.
This can be simulated by modifying svc_tcp_has_wspace to inflate the
number of byte required and removing the 'svc_sock_setbufsize' calls
in svc_setup_socket.
I found that multiplying by 16 was enough to make the requirement
exceed the default allocation. With this modification in place:
mount -o vers=3,proto=tcp 127.0.0.1:/home /mnt
would block and eventually time out because the nfs server could not
accept any requests.
This patch relaxes the request throttling to always allow at least one
request through per connection. It does this by checking both
sk_stream_min_wspace() and xprt->xpt_reserved
are zero.
The first is zero when the TCP transmit queue is empty.
The second is zero when there are no RPC requests being processed.
When both of these are zero the socket is idle and so one more
request can safely be allowed through.
Applying this patch allows the above mount command to succeed cleanly.
Tracing shows that the allocated write buffer space quickly grows and
after a few requests are handled, the extra tests are no longer needed
to permit further requests to be processed.
The main purpose of request throttling is to handle the case when one
client is slow at collecting replies and the send queue gets full of
replies that the client hasn't acknowledged (at the TCP level) yet.
As we only change behaviour when the send queue is empty this main
purpose is still preserved.
Reported-by: Ben Myers <bpm@sgi.com> Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Takashi Iwai [Thu, 1 Aug 2013 09:12:10 +0000 (11:12 +0200)]
Merge tag 'asoc-v3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.11
A fix to make sure userspace knows when control writes have caused a
change in value, fixing some UIs, plus a few few driver fixes mainly
cleaning up issues from recent refactorings on less mainstream platforms.
Aaro Koskinen [Sun, 21 Jul 2013 00:30:11 +0000 (03:30 +0300)]
powerpc/windfarm: Fix noisy slots-fan on Xserve (rm31)
slots-fan on G5 Xserve is always running at full speed with windfarm_rm31
driver, resulting in a very high acoustic noise level. It seems the fan
parameters are incorrect, and have been copied from the Drive Bay fan
(RPM, not present on rm31) of the legacy therm_pm72 driver. This patch
changes the parameters to match the Slots fan (PWM) of therm_pm72. With
the patch, slots-fan speed drops from 99% to 19% during normal use,
and slots-temp settle to ~42'C.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> CC: <stable@vger.kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Robert Jennings [Thu, 25 Jul 2013 01:13:21 +0000 (20:13 -0500)]
powerpc: VPHN topology change updates all siblings
When an associativity level change is found for one thread, the
siblings threads need to be updated as well. This is done today
for PRRN in stage_topology_update() but is missing for VPHN in
update_cpu_associativity_changes_mask(). This patch will correctly
update all thread siblings during a topology change.
Without this patch a topology update can result in a CPU in
init_sched_groups_power() getting stuck indefinitely in a loop.
This loop is built in build_sched_groups(). As a result of the thread
moving to a node separate from its siblings the struct sched_group will
have its next pointer set to point to itself rather than the sched_group
struct of the next thread. This happens because we have a domain without
the SD_OVERLAP flag, which is correct, and a topology that doesn't conform
with reality (threads on the same core assigned to different numa nodes).
When this list is traversed by init_sched_groups_power() it will reach
the thread's sched_group structure and loop indefinitely; the cpu will
be stuck at this point.
The bug was exposed when VPHN was enabled in commit b7abef0 (v3.9).
Cc: <stable@vger.kernel.org> [v3.9+] Reported-by: Jan Stancek <jstancek@redhat.com> Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Michael Ellerman [Tue, 23 Jul 2013 08:07:45 +0000 (18:07 +1000)]
powerpc/perf: Export PERF_EVENT_CONFIG_EBB_SHIFT to userspace
We use bit 63 of the event code for userspace to request that the event
be counted using EBB (Event Based Branches). Export this value, making
it part of the API - though only on processors that support EBB.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Back in commit 89713ed "Add timer, performance monitor and machine check
counts to /proc/interrupts" we added a count of PMU interrupts to the
output of /proc/interrupts.
At the time we named them "CNT" to match x86.
However in commit 89ccf46 "Rename 'performance counter interrupt'", the
x86 guys renamed theirs from "CNT" to "PMI".
Arguably changing the name could break someone's script, but I think the
chance of that is minimal, and it's preferable to have a name that 1) is
somewhat meaningful, and 2) matches x86.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Linus Torvalds [Thu, 1 Aug 2013 00:55:12 +0000 (17:55 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Radeon, nouveau, exynos, intel, mgag200..
Not all strictly regressions but there was probably only one patch I'd
have really left out and it didn't seem worth respinning exynos to
avoid it, the line change count is quite low.
radeon: regressions + more dynamic powermanagement fixes, since DPM
is a new feature, and off by default I'd prefer to keep merging
fixes since it has a large userbase already and I'd like to keep
them on mainline
nouveau: is mostly regression fixes
i915: is a regression fix since Daniel is on holidays I've merged it.
mgag200: I've picked a bunch of targetted fixes from a big bunch of
distro patches,
exynos: build fixes mostly, one regression fix
I expect things will slow right down now, I may send on the intel
early quirk from Jesse separatly, since I think the x86 maintainers
acked it"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (37 commits)
drm/i915: fix missed hunk after GT access breakage
drm/radeon/dpm: re-enable cac control on SI
drm/radeon/dpm: fix calculations in si_calculate_leakage_for_v_and_t_formula
drm: fix 64 bit drm fixed point helpers
drm/radeon/atom: initialize more atom interpretor elements to 0
drm/nouveau: fix semaphore dmabuf obj
drm/nouveau/vm: make vm refcount into a kref
drm/nv31/mpeg: don't recognize nv3x cards as having nv44 graph class
drm/nv40/mpeg: write magic value to channel object to make it work
drm/nouveau: fix size check for cards without vm
drm/nv50-/disp: remove dcb_outp_match call, and related variables
drm/nva3-/disp: fix hda eld writing, needs to be padded
drm/nv31/mpeg: fix mpeg engine initialization
drm/nv50/mc: include vp in the fb error reporting mask
drm/nouveau: fix null pointer dereference in poll_changed
drm/nv50/gpio: post-nv92 cards have 32 interrupt lines
drm/nvc0/fb: take lock in nvc0_ram_put()
drm/nouveau/core: xtensa firmware size needs to be 0x40000 no matter what
drm/mgag200: Fix LUT programming for 16bpp
drm/mgag200: Fix framebuffer pitch calculation
...
Linus Torvalds [Thu, 1 Aug 2013 00:53:38 +0000 (17:53 -0700)]
Merge tag 'vfio-v3.11-rc4' of git://github.com/awilliam/linux-vfio
Pull vfio fixes from Alex Williamson:
"misc fixes around overreacting to bus notifier events and a locking
fix for a corner case blocked remove"
* tag 'vfio-v3.11-rc4' of git://github.com/awilliam/linux-vfio:
vfio-pci: Avoid deadlock on remove
vfio: Ignore sprurious notifies
vfio: Don't overreact to DEL_DEVICE
Linus Torvalds [Thu, 1 Aug 2013 00:52:04 +0000 (17:52 -0700)]
Merge branch 'akpm' (patches from Andrew Morton)
Merge more patches from Andrew Morton:
"A bunch of fixes.
Plus Joe's printk move and rework. It's not a -rc3 thing but now
would be a nice time to offload it, while things are quiet. I've been
sitting on it all for a couple of weeks, no issues"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
vmpressure: make sure there are no events queued after memcg is offlined
vmpressure: do not check for pending work to prevent from new work
vmpressure: change vmpressure::sr_lock to spinlock
printk: rename struct log to struct printk_log
printk: use pointer for console_cmdline indexing
printk: move braille console support into separate braille.[ch] files
printk: add console_cmdline.h
printk: move to separate directory for easier modification
drivers/rtc/rtc-twl.c: fix: rtcX/wakealarm attribute isn't created
mm: zbud: fix condition check on allocation size
thp, mm: avoid PageUnevictable on active/inactive lru lists
mm/swap.c: clear PageActive before adding pages onto unevictable list
arch/x86/platform/ce4100/ce4100.c: include reboot.h
mm: sched: numa: fix NUMA balancing when !SCHED_DEBUG
rapidio: fix use after free in rio_unregister_scan()
.gitignore: ignore *.lz4 files
MAINTAINERS: dynamic debug: Jason's not there...
dmi_scan: add comments on dmi_present() and the loop in dmi_scan_machine()
ocfs2/refcounttree: add the missing NULL check of the return value of find_or_create_page()
mm: mempolicy: fix mbind_range() && vma_adjust() interaction
If there is no querier on a link then we won't get periodic reports and
therefore won't be able to learn about multicast listeners behind ports,
potentially leading to lost multicast packets, especially for multicast
listeners that joined before the creation of the bridge.
These lost multicast packets can appear since c5c23260594
("bridge: Add multicast_querier toggle and disable queries by default")
in particular.
With this patch we are flooding multicast packets if our querier is
disabled and if we didn't detect any other querier.
A grace period of the Maximum Response Delay of the querier is added to
give multicast responses enough time to arrive and to be learned from
before disabling the flooding behaviour again.
Signed-off-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Wed, 31 Jul 2013 13:03:56 +0000 (09:03 -0400)]
8139cp: Add dma_mapping_error checking
Self explanitory dma_mapping_error addition to the 8139 driver, based on this:
https://bugzilla.redhat.com/show_bug.cgi?id=947250
It showed several backtraces arising for dma_map_* usage without checking the
return code on the mapping. Add the check and abort the rx/tx operation if its
failed. Untested as I have no hardware and the reporter has wandered off, but
seems pretty straightforward.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> CC: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Tue, 30 Jul 2013 10:23:39 +0000 (13:23 +0300)]
net_sched: info leak in atm_tc_dump_class()
The "pvc" struct has a hole after pvc.sap_family which is not cleared.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
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