Add a maintainers entry for the Armada DRM driver.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
couple immutable biovec fixups for dm mirror, and a few dm-thin fixes.
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Merge tag 'dm-3.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
"A few dm-cache fixes, an invalid ioctl handling fix for dm multipath,
a couple immutable biovec fixups for dm mirror, and a few dm-thin
fixes.
There will likely be additional dm-thin metadata and data resize fixes
to include in 3.14-rc6 next week.
Note to stable-minded folks: Immutable biovecs were introduced in
3.14, so the related fixups for dm mirror are not needed in stable@
kernels"
* tag 'dm-3.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm cache: fix truncation bug when mapping I/O to >2TB fast device
dm thin: allow metadata space larger than supported to go unused
dm mpath: fix stalls when handling invalid ioctls
dm thin: fix the error path for the thin device constructor
dm raid1: fix immutable biovec related BUG when retrying read bio
dm io: fix I/O to multiple destinations
dm thin: avoid metadata commit if a pool's thin devices haven't changed
dm cache: do not add migration to completed list before unhooking bio
dm cache: move hook_info into common portion of per_bio_data structure
It's a bad habit to get a higher volume of fixes often lately, but
things happen again. All commits found here are real bug fixes,
and are mostly trivial. Most of changes in ASoC are the fixes for
enum items due to the wrong API usages, in addition to a few DAPM
mutex deadlock and other fixes. In HD-audio, only fixups for HP
laptops. Although diffstat shows much, the changes are simple:
there are just so many different device entries there.
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Merge tag 'sound-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"It's a bad habit to get a higher volume of fixes often lately, but
things happen again.
All commits found here are real bug fixes, and are mostly trivial.
Most of changes in ASoC are the fixes for enum items due to the wrong
API usages, in addition to a few DAPM mutex deadlock and other fixes.
In HD-audio, only fixups for HP laptops. Although diffstat shows
much, the changes are simple: there are just so many different device
entries there"
* tag 'sound-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: sta32x: Fix wrong enum for limiter2 release rate
ASoC: da732x: Mark DC offset control registers volatile
ALSA: hda/realtek - Add more entry for enable HP mute led
ALSA: hda - Add a fixup for HP Folio 13 mute LED
ASoC: wm8958-dsp: Fix firmware block loading
ASoC: sta32x: Fix cache sync
ALSA: hda/realtek - Add more entry for enable HP mute led
ASoC: dapm: Add locking to snd_soc_dapm_xxxx_pin functions
Input - arizona-haptics: Fix double lock of dapm_mutex
ASoC: wm8400: Fix the wrong number of enum items
ASoC: isabelle: Fix the wrong number of items in enum ctls
ASoC: ad1980: Fix wrong number of items for capture source
ASoC: wm8994: Fix the wrong number of enum items
ASoC: wm8900: Fix the wrong number of enum items
ASoC: wm8770: Fix wrong number of enum items
ASoC: sta32x: Fix array access overflow
ASoC: dapm: Correct regulator bypass error messages
virtualization on Intel is broken in 3.13 and fixed by this
pull request.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"Three x86 fixes and one for ARM/ARM64.
In particular, nested virtualization on Intel is broken in 3.13 and
fixed by this pull request"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm, vmx: Really fix lazy FPU on nested guest
kvm: x86: fix emulator buffer overflow (CVE-2014-0049)
arm/arm64: KVM: detect CPU reset on CPU_PM_EXIT
KVM: MMU: drop read-only large sptes when creating lower level sptes
Pull powerpc fixes from Ben Herrenschmidt:
"Here are a few more powerpc fixes for 3.14.
Most of these are also CC'ed to stable and fix bugs in new
functionality introduced in the last 2 or 3 versions"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/powernv: Fix indirect XSCOM unmangling
powerpc/powernv: Fix opal_xscom_{read,write} prototype
powerpc/powernv: Refactor PHB diag-data dump
powerpc/powernv: Dump PHB diag-data immediately
powerpc: Increase stack redzone for 64-bit userspace to 512 bytes
powerpc/ftrace: bugfix for test_24bit_addr
powerpc/crashdump : Fix page frame number check in copy_oldmem_page
powerpc/le: Ensure that the 'stop-self' RTAS token is handled correctly
Commit fb4a96029c (arm64: kernel: fix per-cpu offset restore on
resume) uses per_cpu_offset() unconditionally during CPU wakeup,
however, this is only defined for the SMP case.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Dave P Martin <Dave.Martin@arm.com>
Page table entries on ARM64 are 64 bits, and some pte functions such as
pte_dirty return a bitwise-and of a flag with the pte value. If the
flag to be tested resides in the upper 32 bits of the pte, then we run
into the danger of the result being dropped if downcast.
For example:
gather_stats(page, md, pte_dirty(*pte), 1);
where pte_dirty(*pte) is downcast to an int.
This patch adds a double logical invert to all the pte_ accessors to
ensure predictable downcasting.
Signed-off-by: Steve Capper <steve.capper@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
When remapping a block to the cache's fast device that is larger than
2TB we must not truncate the destination sector to 32bits. The 32bit
temporary result of from_cblock() was being overflowed in
remap_to_cache() due to the logical left shift.
Use an intermediate 64bit type to store the 32bit from_cblock() result
to fix the overflow.
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
When compiling perf tool code with gcc 4.4.7 I'm getting
following error:
CC util/session.o
cc1: warnings being treated as errors
util/session.c: In function ‘perf_session_deliver_event’:
tools/perf/util/include/linux/bitops.h:109: error: dereferencing pointer ‘p’ does break strict-aliasing rules
tools/perf/util/include/linux/bitops.h:101: error: dereferencing pointer ‘p’ does break strict-aliasing rules
util/session.c:697: note: initialized from here
tools/perf/util/include/linux/bitops.h:101: note: initialized from here
make[1]: *** [util/session.o] Error 1
make: *** [util/session.o] Error 2
The aliased types here are u64 and unsigned long pointers, which is safe
for the find_first_bit processing.
This error shows up for me only for gcc 4.4 on 32bit x86, even for
-Wstrict-aliasing=3, while newer gcc are quiet and scream here for
-Wstrict-aliasing={2,1}. Looks like newer gcc changed the rules for
strict alias warnings.
The gcc documentation offers workaround for valid aliasing by using
__may_alias__ attribute:
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Type-Attributes.html
Using this workaround for the find_first_bit function.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1393434867-20271-1-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
We need to unmangle the full address, not just the register
number, and we also need to support the real indirect bit
being set for in-kernel uses.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org> [v3.13]
The OPAL firmware functions opal_xscom_read and opal_xscom_write
take a 64-bit argument for the XSCOM (PCB) address in order to
support the indirect mode on P8.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org> [v3.13]
As Ben suggested, the patch prints PHB diag-data with multiple
fields in one line and omits the line if the fields of that
line are all zero.
With the patch applied, the PHB3 diag-data dump looks like:
PHB3 PHB#3 Diag-data (Version: 1)
brdgCtl: 00000002
RootSts: 0000000f 00400000 b0830008 00100147 00002000
nFir: 0000000000000000 0030006e00000000 0000000000000000
PhbSts: 0000001c00000000 0000000000000000
Lem: 0000000000100000 42498e327f502eae 0000000000000000
InAErr: 8000000000000000 8000000000000000 0402030000000000 0000000000000000
PE[ 8] A/B: 8480002b00000000 8000000000000000
[ The current diag data is so big that it overflows the printk
buffer pretty quickly in cases when we get a handful of errors
at once which can happen. --BenH
]
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The PHB diag-data is important to help locating the root cause for
EEH errors such as frozen PE or fenced PHB. However, the EEH core
enables IO path by clearing part of HW registers before collecting
this data causing it to be corrupted.
This patch fixes this by dumping the PHB diag-data immediately when
frozen/fenced state on PE or PHB is detected for the first time in
eeh_ops::get_state() or next_error() backend.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The new ELFv2 little-endian ABI increases the stack redzone -- the
area below the stack pointer that can be used for storing data --
from 288 bytes to 512 bytes. This means that we need to allow more
space on the user stack when delivering a signal to a 64-bit process.
To make the code a bit clearer, we define new USER_REDZONE_SIZE and
KERNEL_REDZONE_SIZE symbols in ptrace.h. For now, we leave the
kernel redzone size at 288 bytes, since increasing it to 512 bytes
would increase the size of interrupt stack frames correspondingly.
Gcc currently only makes use of 288 bytes of redzone even when
compiling for the new little-endian ABI, and the kernel cannot
currently be compiled with the new ABI anyway.
In the future, hopefully gcc will provide an option to control the
amount of redzone used, and then we could reduce it even more.
This also changes the code in arch_compat_alloc_user_space() to
preserve the expanded redzone. It is not clear why this function would
ever be used on a 64-bit process, though.
Signed-off-by: Paul Mackerras <paulus@samba.org>
CC: <stable@vger.kernel.org> [v3.13]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The branch target should be the func addr, not the addr of func_descr_t.
So using ppc_function_entry() to generate the right target addr.
Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
In copy_oldmem_page, the current check using max_pfn and min_low_pfn to
decide if the page is backed or not, is not valid when the memory layout is
not continuous.
This happens when running as a QEMU/KVM guest, where RTAS is mapped higher
in the memory. In that case max_pfn points to the end of RTAS, and a hole
between the end of the kdump kernel and RTAS is not backed by PTEs. As a
consequence, the kdump kernel is crashing in copy_oldmem_page when accessing
in a direct way the pages in that hole.
This fix relies on the memblock's service memblock_is_region_memory to
check if the read page is part or not of the directly accessible memory.
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Tested-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Currently we're storing a host endian RTAS token in
rtas_stop_self_args.token. We then pass that directly to rtas. This is
fine on big endian however on little endian the token is not what we
expect.
This will typically result in hitting:
panic("Alas, I survived.\n");
To fix this we always use the stop-self token in host order and always
convert it to be32 before passing this to rtas.
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Commit e504c9098e (kvm, vmx: Fix lazy FPU on nested guest, 2013-11-13)
highlighted a real problem, but the fix was subtly wrong.
nested_read_cr0 is the CR0 as read by L2, but here we want to look at
the CR0 value reflecting L1's setup. In other words, L2 might think
that TS=0 (so nested_read_cr0 has the bit clear); but if L1 is actually
running it with TS=1, we should inject the fault into L1.
The effective value of CR0 in L2 is contained in vmcs12->guest_cr0, use
it.
Fixes: e504c9098e
Reported-by: Kashyap Chamarty <kchamart@redhat.com>
Reported-by: Stefan Bader <stefan.bader@canonical.com>
Tested-by: Kashyap Chamarty <kchamart@redhat.com>
Tested-by: Anthoine Bourgeois <bourgeois@bertin.fr>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Now that we disable audio while setting up the audio
hw, we should be able to set this up without hangs.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Disable audio around audio hw setup. This may avoid
hangs on certain asics.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Properly clear the enable bit when audio disable is requested.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Need to free the uvd ring. Also reshuffle gart tear down to
happen after uvd tear down.
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Causes display problems. We had already disabled
sharing for non-DP displays.
Based on a patch from:
Niels Ole Salscheider <niels_ole@salscheider-online.de>
bug:
https://bugzilla.kernel.org/show_bug.cgi?id=58121
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Otherwise we might get a crash here.
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Print the supported functions mask in addition to
the version. This is useful in debugging PX
problems since we can see what functions are available.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
- Add the new sched_setattr/sched_getattr syscalls to the asm-generic
syscall list, which is used by arc, arm64, c6x, hexagon, metag,
openrisc, score, tile, and unicore32.
- An IRQ affinity bug fix for metag to prevent interrupts being vectored
to offline CPUs when their affinity is changed via /proc/irq/ (thanks
tglx).
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Merge tag 'metag-fixes-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull Metag arch and asm-generic fixes from James Hogan:
- Add the new sched_setattr/sched_getattr syscalls to the asm-generic
syscall list, which is used by arc, arm64, c6x, hexagon, metag,
openrisc, score, tile, and unicore32.
- An IRQ affinity bug fix for metag to prevent interrupts being
vectored to offline CPUs when their affinity is changed via
/proc/irq/ (thanks tglx).
* tag 'metag-fixes-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
irq-metag*: stop set_affinity vectoring to offline cpus
asm-generic: add sched_setattr/sched_getattr syscalls
Just a single trivial patch to plug a memory leak in an error path.
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Merge tag 'pwm/for-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm fix from Thierry Reding:
"Just a single trivial patch to plug a memory leak in an error path"
* tag 'pwm/for-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: lp3943: Fix potential memory leak during request
Pull filesystem fixes from Jan Kara:
"Notification, writeback, udf, quota fixes
The notification patches are (with one exception) a fallout of my
fsnotify rework which went into -rc1 (I've extented LTP to cover these
cornercases to avoid similar breakage in future).
The UDF patch is a nasty data corruption Al has recently reported,
the revert of the writeback patch is due to possibility of violating
sync(2) guarantees, and a quota bug can lead to corruption of quota
files in ocfs2"
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: Allocate overflow events with proper type
fanotify: Handle overflow in case of permission events
fsnotify: Fix detection whether overflow event is queued
Revert "writeback: do not sync data dirtied after sync start"
quota: Fix race between dqput() and dquot_scan_active()
udf: Fix data corruption on file type conversion
inotify: Fix reporting of cookies for inotify events
touch freed memory.
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Merge tag 'upstream-3.14-rc5' of git://git.infradead.org/linux-ubifs
Pull ubifs fix from Artem Bityutskiy:
"Just a single fix for the UBI module unload path which makes sure we
do not touch freed memory"
* tag 'upstream-3.14-rc5' of git://git.infradead.org/linux-ubifs:
UBI: fix some use after free bugs
The problem occurs when the guest performs a pusha with the stack
address pointing to an mmio address (or an invalid guest physical
address) to start with, but then extending into an ordinary guest
physical address. When doing repeated emulated pushes
emulator_read_write sets mmio_needed to 1 on the first one. On a
later push when the stack points to regular memory,
mmio_nr_fragments is set to 0, but mmio_is_needed is not set to 0.
As a result, KVM exits to userspace, and then returns to
complete_emulated_mmio. In complete_emulated_mmio
vcpu->mmio_cur_fragment is incremented. The termination condition of
vcpu->mmio_cur_fragment == vcpu->mmio_nr_fragments is never achieved.
The code bounces back and fourth to userspace incrementing
mmio_cur_fragment past it's buffer. If the guest does nothing else it
eventually leads to a a crash on a memcpy from invalid memory address.
However if a guest code can cause the vm to be destroyed in another
vcpu with excellent timing, then kvm_clear_async_pf_completion_queue
can be used by the guest to control the data that's pointed to by the
call to cancel_work_item, which can be used to gain execution.
Fixes: f78146b0f9
Signed-off-by: Andrew Honig <ahonig@google.com>
Cc: stable@vger.kernel.org (3.5+)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Commit 1fcf7ce0c6 (arm: kvm: implement CPU PM notifier) added
support for CPU power-management, using a cpu_notifier to re-init
KVM on a CPU that entered CPU idle.
The code assumed that a CPU entering idle would actually be powered
off, loosing its state entierely, and would then need to be
reinitialized. It turns out that this is not always the case, and
some HW performs CPU PM without actually killing the core. In this
case, we try to reinitialize KVM while it is still live. It ends up
badly, as reported by Andre Przywara (using a Calxeda Midway):
[ 3.663897] Kernel panic - not syncing: unexpected prefetch abort in Hyp mode at: 0x685760
[ 3.663897] unexpected data abort in Hyp mode at: 0xc067d150
[ 3.663897] unexpected HVC/SVC trap in Hyp mode at: 0xc0901dd0
The trick here is to detect if we've been through a full re-init or
not by looking at HVBAR (VBAR_EL2 on arm64). This involves
implementing the backend for __hyp_get_vectors in the main KVM HYP
code (rather small), and checking the return value against the
default one when the CPU notifier is called on CPU_PM_EXIT.
Reported-by: Andre Przywara <osp@andrep.de>
Tested-by: Andre Przywara <osp@andrep.de>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Rob Herring <rob.herring@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It was always intended that a user could provide a thin metadata device
that is larger than the max supported by the on-disk format. The extra
space would just go unused.
Unfortunately that never worked. If the user attempted to use a larger
metadata device on creation they would get an error like the following:
device-mapper: space map common: space map too large
device-mapper: transaction manager: couldn't create metadata space map
device-mapper: thin metadata: tm_create_with_sm failed
device-mapper: table: 252:17: thin-pool: Error creating metadata object
device-mapper: ioctl: error adding target to table
Fix this by allowing the initial metadata space map creation to cap its
size at the max number of blocks supported (DM_SM_METADATA_MAX_BLOCKS).
get_metadata_dev_size() must also impose DM_SM_METADATA_MAX_BLOCKS (via
THIN_METADATA_MAX_SECTORS), otherwise extending metadata would cap at
THIN_METADATA_MAX_SECTORS_WARNING (which is larger than supported).
Also, the calculation for THIN_METADATA_MAX_SECTORS didn't account for
the sizeof the disk_bitmap_header. So the supported maximum metadata
size is a bit smaller (reduced from 33423360 to 33292800 sectors).
Lastly, remove the "excess space will not be used" warning message from
get_metadata_dev_size(); it resulted in printing the warning multiple
times. Factor out warn_if_metadata_device_too_big(), call it from
pool_ctr() and maybe_resize_metadata_dev().
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
A few more driver specific bug fixes, all driver specific things that
only affect users of those devices.
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Merge tag 'asoc-v3.14-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v3.14
A few more driver specific bug fixes, all driver specific things that
only affect users of those devices.
Drew Richardson reported that he could make the kernel go *boom* when hotplugging
while having perf events active.
It turned out that when you have a group event, the code in
__perf_event_exit_context() fails to remove the group siblings from
the context.
We then proceed with destroying and freeing the event, and when you
re-plug the CPU and try and add another event to that CPU, things go
*boom* because you've still got dead entries there.
Reported-by: Drew Richardson <drew.richardson@arm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/n/tip-k6v5wundvusvcseqj1si0oz0@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Vince "Super Tester" Weaver reported a new round of syscall fuzzing (Trinity) failures,
with perf WARN_ON()s triggering. He also provided traces of the failures.
This is I think the relevant bit:
> pec_1076_warn-2804 [000] d... 147.926153: x86_pmu_disable: x86_pmu_disable
> pec_1076_warn-2804 [000] d... 147.926153: x86_pmu_state: Events: {
> pec_1076_warn-2804 [000] d... 147.926156: x86_pmu_state: 0: state: .R config: ffffffffffffffff ( (null))
> pec_1076_warn-2804 [000] d... 147.926158: x86_pmu_state: 33: state: AR config: 0 (ffff88011ac99800)
> pec_1076_warn-2804 [000] d... 147.926159: x86_pmu_state: }
> pec_1076_warn-2804 [000] d... 147.926160: x86_pmu_state: n_events: 1, n_added: 0, n_txn: 1
> pec_1076_warn-2804 [000] d... 147.926161: x86_pmu_state: Assignment: {
> pec_1076_warn-2804 [000] d... 147.926162: x86_pmu_state: 0->33 tag: 1 config: 0 (ffff88011ac99800)
> pec_1076_warn-2804 [000] d... 147.926163: x86_pmu_state: }
> pec_1076_warn-2804 [000] d... 147.926166: collect_events: Adding event: 1 (ffff880119ec8800)
So we add the insn:p event (fd[23]).
At this point we should have:
n_events = 2, n_added = 1, n_txn = 1
> pec_1076_warn-2804 [000] d... 147.926170: collect_events: Adding event: 0 (ffff8800c9e01800)
> pec_1076_warn-2804 [000] d... 147.926172: collect_events: Adding event: 4 (ffff8800cbab2c00)
We try and add the {BP,cycles,br_insn} group (fd[3], fd[4], fd[15]).
These events are 0:cycles and 4:br_insn, the BP event isn't x86_pmu so
that's not visible.
group_sched_in()
pmu->start_txn() /* nop - BP pmu */
event_sched_in()
event->pmu->add()
So here we should end up with:
0: n_events = 3, n_added = 2, n_txn = 2
4: n_events = 4, n_added = 3, n_txn = 3
But seeing the below state on x86_pmu_enable(), the must have failed,
because the 0 and 4 events aren't there anymore.
Looking at group_sched_in(), since the BP is the leader, its
event_sched_in() must have succeeded, for otherwise we would not have
seen the sibling adds.
But since neither 0 or 4 are in the below state; their event_sched_in()
must have failed; but I don't see why, the complete state: 0,0,1:p,4
fits perfectly fine on a core2.
However, since we try and schedule 4 it means the 0 event must have
succeeded! Therefore the 4 event must have failed, its failure will
have put group_sched_in() into the fail path, which will call:
event_sched_out()
event->pmu->del()
on 0 and the BP event.
Now x86_pmu_del() will reduce n_events; but it will not reduce n_added;
giving what we see below:
n_event = 2, n_added = 2, n_txn = 2
> pec_1076_warn-2804 [000] d... 147.926177: x86_pmu_enable: x86_pmu_enable
> pec_1076_warn-2804 [000] d... 147.926177: x86_pmu_state: Events: {
> pec_1076_warn-2804 [000] d... 147.926179: x86_pmu_state: 0: state: .R config: ffffffffffffffff ( (null))
> pec_1076_warn-2804 [000] d... 147.926181: x86_pmu_state: 33: state: AR config: 0 (ffff88011ac99800)
> pec_1076_warn-2804 [000] d... 147.926182: x86_pmu_state: }
> pec_1076_warn-2804 [000] d... 147.926184: x86_pmu_state: n_events: 2, n_added: 2, n_txn: 2
> pec_1076_warn-2804 [000] d... 147.926184: x86_pmu_state: Assignment: {
> pec_1076_warn-2804 [000] d... 147.926186: x86_pmu_state: 0->33 tag: 1 config: 0 (ffff88011ac99800)
> pec_1076_warn-2804 [000] d... 147.926188: x86_pmu_state: 1->0 tag: 1 config: 1 (ffff880119ec8800)
> pec_1076_warn-2804 [000] d... 147.926188: x86_pmu_state: }
> pec_1076_warn-2804 [000] d... 147.926190: x86_pmu_enable: S0: hwc->idx: 33, hwc->last_cpu: 0, hwc->last_tag: 1 hwc->state: 0
So the problem is that x86_pmu_del(), when called from a
group_sched_in() that fails (for whatever reason), and without x86_pmu
TXN support (because the leader is !x86_pmu), will corrupt the n_added
state.
Reported-and-Tested-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Dave Jones <davej@redhat.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20140221150312.GF3104@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
A somewhat large set of fixes here due to the identification of some
systematic problems with hard to use APIs in the subsystem. Takashi did
a lot of work to address the enumeration API which uncovered a number of
off by one bugs caused by confusing APIs while Charles addressed issues
in the locking around DAPM.
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Merge tag 'asoc-v3.14-rc4' into asoc-linus
ASoC: Fixes for v3.14
A somewhat large set of fixes here due to the identification of some
systematic problems with hard to use APIs in the subsystem. Takashi did
a lot of work to address the enumeration API which uncovered a number of
off by one bugs caused by confusing APIs while Charles addressed issues
in the locking around DAPM.
# gpg: Signature made Sun 23 Feb 2014 13:29:34 KST using RSA key ID 7EA229BD
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg: aka "Mark Brown <broonie@debian.org>"
# gpg: aka "Mark Brown <broonie@kernel.org>"
# gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg: aka "Mark Brown <broonie@linaro.org>"
# gpg: aka "Mark Brown <Mark.Brown@linaro.org>"
A few fixes, all driver speccific ones. The DaVinci ones aren't as
clear as they should be from the subject lines on the commits but they
fix issues which will prevent correct operation in some use cases and
only affect that particular driver so are reasonably safe.
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Merge tag 'asoc-v3.14-rc3' into asoc-linus
ASoC: Fixes for v3.14
A few fixes, all driver speccific ones. The DaVinci ones aren't as
clear as they should be from the subject lines on the commits but they
fix issues which will prevent correct operation in some use cases and
only affect that particular driver so are reasonably safe.
# gpg: Signature made Wed 19 Feb 2014 13:23:13 KST using RSA key ID 7EA229BD
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg: aka "Mark Brown <broonie@debian.org>"
# gpg: aka "Mark Brown <broonie@kernel.org>"
# gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg: aka "Mark Brown <broonie@linaro.org>"
# gpg: aka "Mark Brown <Mark.Brown@linaro.org>"
There is a typo in the Limiter2 Release Rate control, a wrong enum for
Limiter1 is assigned. It must point to Limiter2.
Spotted by a compile warning:
In file included from sound/soc/codecs/sta32x.c:34:0:
sound/soc/codecs/sta32x.c:223:29: warning: ‘sta32x_limiter2_release_rate_enum’ defined but not used [-Wunused-variable]
static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_release_rate_enum,
^
include/sound/soc.h:275:18: note: in definition of macro ‘SOC_ENUM_DOUBLE_DECL’
struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
^
sound/soc/codecs/sta32x.c:223:8: note: in expansion of macro ‘SOC_ENUM_SINGLE_DECL’
static SOC_ENUM_SINGLE_DECL(sta32x_limiter2_release_rate_enum,
^
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: <stable@vger.kernel.org>
A somewhat large set of fixes here due to the identification of some
systematic problems with hard to use APIs in the subsystem. Takashi did
a lot of work to address the enumeration API which uncovered a number of
off by one bugs caused by confusing APIs while Charles addressed issues
in the locking around DAPM.
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Merge tag 'asoc-v3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.14
A somewhat large set of fixes here due to the identification of some
systematic problems with hard to use APIs in the subsystem. Takashi did
a lot of work to address the enumeration API which uncovered a number of
off by one bugs caused by confusing APIs while Charles addressed issues
in the locking around DAPM.
Fix Dave's git tree.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Add an entry for radeon.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
ehci_irq() and ehci_hrtimer_func() can deadlock on ehci->lock when
threadirqs option is used. To prevent the deadlock use
spin_lock_irqsave() in ehci_irq().
This change can be reverted when hrtimer callbacks become threaded.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hello,
the following patch adds an entry for the PID of a Cressi Leonardo
diving computer interface to kernel 3.13.0.
It is detected as FT232RL.
Works with subsurface.
Signed-off-by: Joerg Dorchain <joerg@dorchain.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Russell King