... by turning it into what used to be multipages counterpart
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes for code merged this cycle:
- Fix restore of SPRs upon wake up from hypervisor state loss from Gautham R. Shenoy
- Fix the state of root PE from Gavin Shan
- Detach from PE on releasing PCI device from Gavin Shan
- Fix size of NUM_CPU_FTR_KEYS on 32-bit
- Fix missed TCE invalidations that should fallback to OPAL
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Merge tag 'powerpc-4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fixes for code merged this cycle:
- Fix restore of SPRs upon wake up from hypervisor state loss from
Gautham R Shenoy
- Fix the state of root PE from Gavin Shan
- Detach from PE on releasing PCI device from Gavin Shan
- Fix size of NUM_CPU_FTR_KEYS on 32-bit
- Fix missed TCE invalidations that should fallback to OPAL"
* tag 'powerpc-4.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/powernv/pci: Fix missed TCE invalidations that should fallback to OPAL
powerpc/powernv: Detach from PE on releasing PCI device
powerpc/powernv: Fix the state of root PE
powerpc/kernel: Fix size of NUM_CPU_FTR_KEYS on 32-bit
powerpc/powernv: Fix restore of SPRs upon wake up from hypervisor state loss
Pull cifs fixes from Steve French:
"Small set of cifs fixes"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
Move check for prefix path to within cifs_get_root()
Compare prepaths when comparing superblocks
Fix memory leaks in cifs_do_mount()
i915, vc4 and atmel.
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Merge tag 'drm-fixes-for-4.8-rc6' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Two sets of i915 fixes, one set of vc4 crasher fixes, and a couple of
atmel fixes.
Nothing too out there at this stage, though I think some people are
holidaying so it's been quiet enough"
* tag 'drm-fixes-for-4.8-rc6' of git://people.freedesktop.org/~airlied/linux:
drm/i915: Ignore OpRegion panel type except on select machines
Revert "drm/i915/psr: Make idle_frames sensible again"
drm/i915: Restore lost "Initialized i915" welcome message
drm/vc4: mark vc4_bo_cache_purge() static
drm/i915: Add GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE to SNB
drm/i915: disable 48bit full PPGTT when vGPU is active
drm/i915: enable vGPU detection for all
drm/atmel-hlcdc: Make ->reset() implementation static
drm: atmel-hlcdc: Fix vertical scaling
drm/vc4: Allow some more signals to be packed with uniform resets.
drm/i915/dvo: Remove dangling call to drm_encoder_cleanup()
More annotations of tracepoints in the runtime PM framework to
prevent RCU from complaining when that code is invoked from the
idle path (Paul McKenney).
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Merge tag 'pm-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"More annotations of tracepoints in the runtime PM framework to prevent
RCU from complaining when that code is invoked from the idle path
(Paul McKenney)"
* tag 'pm-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / runtime: Use _rcuidle for runtime suspend tracepoints
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Merge tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux into drm-fixes
This pull request brings in a fix for crashes in X on VC4.
* tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux:
drm/vc4: mark vc4_bo_cache_purge() static
drm/vc4: Allow some more signals to be packed with uniform resets.
i915 fixes from Jani.
* tag 'drm-intel-fixes-2016-09-15' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Ignore OpRegion panel type except on select machines
Revert "drm/i915/psr: Make idle_frames sensible again"
drm/i915: Restore lost "Initialized i915" welcome message
- Various fixes to rdmavt, ipoib, mlx5, mlx4, rxe
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"Round three of 4.8 rc fixes.
This is likely the last rdma pull request this cycle. The new rxe
driver had a few issues (you probably saw the boot bot bug report) and
they should be addressed now. There are a couple other fixes here,
mainly mlx4. There are still two outstanding issues that need
resolved but I don't think their fix will make this kernel cycle.
Summary:
- Various fixes to rdmavt, ipoib, mlx5, mlx4, rxe"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
IB/rdmavt: Don't vfree a kzalloc'ed memory region
IB/rxe: Fix kmem_cache leak
IB/rxe: Fix race condition between requester and completer
IB/rxe: Fix duplicate atomic request handling
IB/rxe: Fix kernel panic in udp_setup_tunnel
IB/mlx5: Set source mac address in FTE
IB/mlx5: Enable MAD_IFC commands for IB ports only
IB/mlx4: Diagnostic HW counters are not supported in slave mode
IB/mlx4: Use correct subnet-prefix in QP1 mads under SR-IOV
IB/mlx4: Fix code indentation in QP1 MAD flow
IB/mlx4: Fix incorrect MC join state bit-masking on SR-IOV
IB/ipoib: Don't allow MC joins during light MC flush
IB/rxe: fix GFP_KERNEL in spinlock context
Here are a couple of bugfixes for v4.8-rc. Most of them have
actually been around for a while this time but for some reason
didn't get applied early on. The shmobile regulator fix is the
only one that isn't completely obvious.
device tree changes:
- archtimer interrupts must be level triggered (multiple platforms)
- fix for USB and MMC clocks on STiH410
- fix split DT repository in case of raspberry-pi 3
- A new use of skeleton.dtsi on arm64 has crept in after that
was removed.
defconfig updates:
- xilinx vdma has a new Kconfig symbol name
- keystone requires CONFIG_NOP_USB_XCEIV since v4.8-rc1
code fixes:
- fix regulator quirk on shmobile
- suspend-to-ram regression on EXYNOS
maintainer updates:
- Javier Martinez Canillas is now a reviewer for Samsung EXYNOS
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"Here are a couple of bugfixes for v4.8-rc.
Most of them have actually been around for a while this time but for
some reason didn't get applied early on. The shmobile regulator fix
is the only one that isn't completely obvious.
Device tree changes:
- archtimer interrupts must be level triggered (multiple platforms)
- fix for USB and MMC clocks on STiH410
- fix split DT repository in case of raspberry-pi 3
- a new use of skeleton.dtsi on arm64 has crept in after that was
removed.
defconfig updates:
- xilinx vdma has a new Kconfig symbol name
- keystone requires CONFIG_NOP_USB_XCEIV since v4.8-rc1
Code fixes:
- fix regulator quirk on shmobile
- suspend-to-ram regression on EXYNOS
Maintainer updates:
- Javier Martinez Canillas is now a reviewer for Samsung EXYNOS"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: keystone: defconfig: Fix USB configuration
arm64: dts: Fix broken architected timer interrupt trigger
ARM: multi_v7_defconfig: update XILINX_VDMA
ARM64: dts: bcm: Use a symlink to R-Pi dtsi files from arch=arm
ARM: dts: Remove use of skeleton.dtsi from bcm283x.dtsi
ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI
ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB)
ARM: shmobile: fix regulator quirk for Gen2
ARM: EXYNOS: Clear OF_POPULATED flag from PMU node in IRQ init callback
MAINTAINERS: Add myself as reviewer for Samsung Exynos support
Pull ARM fixes from Russell King:
"Most of this update are fixes primarily discovered from testing on the
older StrongARM 1110 and PXA systems, as a result of recent interest
from several people in these platforms:
- Locomo interrupt handling incorrectly stores the handler data in
the chip's private data slot: when Locomo is combined with an
interrupt controller who's chip uses the chip private data, this
leads to an oops.
- SA1111 was missing a call to clk_disable() to clean up after a
failed probe.
- SA1111 and PCMCIA suspend/resume was broken:
The PCMCIA "ds" layer was using the legacy bus suspend/resume
methods, which the core PM code is no longer calling as a result of
device_pm_check_callbacks() introduced in commit aa8e54b559
("PM / sleep: Go direct_complete if driver has no callbacks").
SA1111 was broken due to changes to PCMCIA which makes PCMCIA
suspend itself later than the SA1111 code expects, and resume
before the SA1111 code has initialised access to the pcmcia
sub-device.
- the default SA1111 interrupt mask polarity got messed up when it
was converted to use a dynamic interrupt base number for its
interrupts.
- fix platform_get_irq() error code propagation, which was causing
problems on platforms where the interrupt may not be available at
probe time in DT setups.
- fix the lack of clock to PCMCIA code on PXA platforms, which was
omitted in conversions of PXA to CCF.
- fix an oops in the PXA PCMCIA code caused by a previous commit not
realising that Lubbock is different from the rest of the PXA PCMCIA
drivers.
- ensure that SA1111 low-level PCMCIA drivers propagate their error
codes to the main probe function, rather than the driver silently
accepting a failure.
- fix the sa11xx debugfs reporting of timing information, which
always indicated zero due to the clock being a factor of 1000 out.
- fix the polarity of the status change signal reported from the
sockets.
Lastly, one ARM specific commit from Stefan Agner fixing the LPAE
cache attributes"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: pxa/lubbock: add pcmcia clock
ARM: locomo: fix locomo irq handling
ARM: 8612/1: LPAE: initialize cache policy correctly
ARM: sa1111: fix missing clk_disable()
ARM: sa1111: fix pcmcia suspend/resume
ARM: sa1111: fix pcmcia interrupt mask polarity
ARM: sa1111: fix error code propagation in sa1111_probe()
pcmcia: lubbock: fix sockets configuration
pcmcia: sa1111: fix propagation of lowlevel board init return code
pcmcia: soc_common: fix SS_STSCHG polarity
pcmcia: sa11xx_base: add units to the timing information
pcmcia: sa11xx_base: fix reporting of timing information
pcmcia: ds: fix suspend/resume
The userspace memory region 'mr' is allocated with kzalloc in
__rvt_alloc_mr however it is incorrectly being freed with vfree in
__rvt_free_mr. Fix this by using kfree to free it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
rxe_requester() is sending a pkt with rxe_xmit_packet() and
then calls rxe_update() to update the wqe and qp's psn values.
But sometimes the response is received before the requester
had time to update the wqe in which case the completer
acts on errornous wqe values.
This fix updates the wqe and qp before actually sending
the request and rolls back when xmit fails.
Fixes: 8700e3e7c4 ("Soft RoCE driver")
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
When handling ack for atomic opcodes like "fetch&add"
or "cmp&swp", the method send_atomic_ack() saves the ack
before sending it, in case it gets lost and never reach the
requester. In which case the method duplicate_request()
will need to find it using the duplicated request.psn.
But send_atomic_ack() used a wrong psn value and thus
the above ack was never found.
This fix uses the ack.psn to locate the ack in case
its needed.
This fix also copies the ack packet to the skb's control buffer
since duplicate_request() will need it when calling rxe_xmit_packet()
Fixes: 8700e3e7c4 ("Soft RoCE driver")
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Set the source mac address in the FTE when L2 specification
is provided.
Fixes: 038d2ef875 ('IB/mlx5: Add flow steering support')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
MAD_IFC command is supported only for physical functions (PF)
and when physical port is IB. The proposed fix enforces it.
Fixes: d603c809ef ("IB/mlx5: Fix decision on using MAD_IFC")
Reported-by: David Chang <dchang@suse.com>
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Modify the mlx4_ib_diag_counters() to avoid the following error in the
hypervisor when the slave tries to query the hardware counters in SR-IOV
mode.
mlx4_core 0000:81:00.0: Unknown command:0x30 accepted from slave:1
Fixes: 3f85f2aaab ("IB/mlx4: Add diagnostic hardware counters")
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
When sending QP1 MAD packets which use a GRH, the source GID
(which consists of the 64-bit subnet prefix, and the 64 bit port GUID)
must be included in the packet GRH.
For SR-IOV, a GID cache is used, since the source GID needs to be the
slave's source GID, and not the Hypervisor's GID. This cache also
included a subnet_prefix. Unfortunately, the subnet_prefix field in
the cache was never initialized (to the default subnet prefix 0xfe80::0).
As a result, this field remained all zeroes. Therefore, when SR-IOV
was active, all QP1 packets which included a GRH had a source GID
subnet prefix of all-zeroes.
However, the subnet-prefix should initially be 0xfe80::0 (the default
subnet prefix). In addition, if OpenSM modifies a port's subnet prefix,
the new subnet prefix must be used in the GRH when sending QP1 packets.
To fix this we now initialize the subnet prefix in the SR-IOV GID cache
to the default subnet prefix. We update the cached value if/when OpenSM
modifies the port's subnet prefix. We take this cached value when sending
QP1 packets when SR-IOV is active.
Note that the value is stored as an atomic64. This eliminates any need
for locking when the subnet prefix is being updated.
Note also that we depend on the FW generating the "port management change"
event for tracking subnet-prefix changes performed by OpenSM. If running
early FW (before 2.9.4630), subnet prefix changes will not be tracked (but
the default subnet prefix still will be stored in the cache; therefore
users who do not modify the subnet prefix will not have a problem).
IF there is a need for such tracking also for early FW, we will add that
capability in a subsequent patch.
Fixes: 1ffeb2eb8b ("IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP support")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
The indentation in the QP1 GRH flow in procedure build_mlx_header is
really confusing. Fix it, in preparation for a commit which touches
this code.
Fixes: 1ffeb2eb8b ("IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP support")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Because of an incorrect bit-masking done on the join state bits, when
handling a join request we failed to detect a difference between the
group join state and the request join state when joining as send only
full member (0x8). This caused the MC join request not to be sent.
This issue is relevant only when SRIOV is enabled and SM supports
send only full member.
This fix separates scope bits and join states bits a nibble each.
Fixes: b9c5d6a643 ('IB/mlx4: Add multicast group (MCG) paravirtualization for SR-IOV')
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This fix solves a race between light flush and on the fly joins.
Light flush doesn't set the device to down and unset IPOIB_OPER_UP
flag, this means that if while flushing we have a MC join in progress
and the QP was attached to BC MGID we can have a mismatches when
re-attaching a QP to the BC MGID.
The light flush would set the broadcast group to NULL causing an on
the fly join to rejoin and reattach to the BC MCG as well as adding
the BC MGID to the multicast list. The flush process would later on
remove the BC MGID and detach it from the QP. On the next flush
the BC MGID is present in the multicast list but not found when trying
to detach it because of the previous double attach and single detach.
[18332.714265] ------------[ cut here ]------------
[18332.717775] WARNING: CPU: 6 PID: 3767 at drivers/infiniband/core/verbs.c:280 ib_dealloc_pd+0xff/0x120 [ib_core]
...
[18332.775198] Hardware name: Red Hat KVM, BIOS Bochs 01/01/2011
[18332.779411] 0000000000000000 ffff8800b50dfbb0 ffffffff813fed47 0000000000000000
[18332.784960] 0000000000000000 ffff8800b50dfbf0 ffffffff8109add1 0000011832f58300
[18332.790547] ffff880226a596c0 ffff880032482000 ffff880032482830 ffff880226a59280
[18332.796199] Call Trace:
[18332.798015] [<ffffffff813fed47>] dump_stack+0x63/0x8c
[18332.801831] [<ffffffff8109add1>] __warn+0xd1/0xf0
[18332.805403] [<ffffffff8109aebd>] warn_slowpath_null+0x1d/0x20
[18332.809706] [<ffffffffa025d90f>] ib_dealloc_pd+0xff/0x120 [ib_core]
[18332.814384] [<ffffffffa04f3d7c>] ipoib_transport_dev_cleanup+0xfc/0x1d0 [ib_ipoib]
[18332.820031] [<ffffffffa04ed648>] ipoib_ib_dev_cleanup+0x98/0x110 [ib_ipoib]
[18332.825220] [<ffffffffa04e62c8>] ipoib_dev_cleanup+0x2d8/0x550 [ib_ipoib]
[18332.830290] [<ffffffffa04e656f>] ipoib_uninit+0x2f/0x40 [ib_ipoib]
[18332.834911] [<ffffffff81772a8a>] rollback_registered_many+0x1aa/0x2c0
[18332.839741] [<ffffffff81772bd1>] rollback_registered+0x31/0x40
[18332.844091] [<ffffffff81773b18>] unregister_netdevice_queue+0x48/0x80
[18332.848880] [<ffffffffa04f489b>] ipoib_vlan_delete+0x1fb/0x290 [ib_ipoib]
[18332.853848] [<ffffffffa04df1cd>] delete_child+0x7d/0xf0 [ib_ipoib]
[18332.858474] [<ffffffff81520c08>] dev_attr_store+0x18/0x30
[18332.862510] [<ffffffff8127fe4a>] sysfs_kf_write+0x3a/0x50
[18332.866349] [<ffffffff8127f4e0>] kernfs_fop_write+0x120/0x170
[18332.870471] [<ffffffff81207198>] __vfs_write+0x28/0xe0
[18332.874152] [<ffffffff810e09bf>] ? percpu_down_read+0x1f/0x50
[18332.878274] [<ffffffff81208062>] vfs_write+0xa2/0x1a0
[18332.881896] [<ffffffff812093a6>] SyS_write+0x46/0xa0
[18332.885632] [<ffffffff810039b7>] do_syscall_64+0x57/0xb0
[18332.889709] [<ffffffff81883321>] entry_SYSCALL64_slow_path+0x25/0x25
[18332.894727] ---[ end trace 09ebbe31f831ef17 ]---
Fixes: ee1e2c82c2 ("IPoIB: Refresh paths instead of flushing them on SM change events")
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
There is skb_clone(skb, GFP_KERNEL) in spinlock context
in rxe_rcv_mcast_pkt().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
broke Suspend to RAM on Exynos boards due to lack of probing of
PMU (Power Management Unit) driver. Multiple drivers attach to
the PMU's DT node: irqchip, clock controller and PMU platform
driver for handling suspend. The new irqchip code marked the
PMU's DT node as OF_POPULATED but we need to attach to this
node also PMU platform driver.
2. Add Javier as additional reviewer for Exynos patches.
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Merge tag 'samsung-fixes-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into fixes
Pull "ARM: exynos: Fixes for v4.8, secound round" from Krzysztof Kozłowski:
1. A recent change in populating irqchip devices from Device Tree
broke Suspend to RAM on Exynos boards due to lack of probing of
PMU (Power Management Unit) driver. Multiple drivers attach to
the PMU's DT node: irqchip, clock controller and PMU platform
driver for handling suspend. The new irqchip code marked the
PMU's DT node as OF_POPULATED but we need to attach to this
node also PMU platform driver.
2. Add Javier as additional reviewer for Exynos patches.
* tag 'samsung-fixes-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: EXYNOS: Clear OF_POPULATED flag from PMU node in IRQ init callback
MAINTAINERS: Add myself as reviewer for Samsung Exynos support
Some full-speed mceusb infrared transceivers contain invalid endpoint
descriptors for their interrupt endpoints, with bInterval set to 0.
In the past they have worked out okay with the mceusb driver, because
the driver sets the bInterval field in the descriptor to 1,
overwriting whatever value may have been there before. However, this
approach was never sanctioned by the USB core, and in fact it does not
work with xHCI controllers, because they use the bInterval value that
was present when the configuration was installed.
Currently usbcore uses 32 ms as the default interval if the value in
the endpoint descriptor is invalid. It turns out that these IR
transceivers don't work properly unless the interval is set to 10 ms
or below. To work around this mceusb problem, this patch changes the
endpoint-descriptor parsing routine, making the default interval value
be 10 ms rather than 32 ms.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Wade Berrier <wberrier@gmail.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We have CONFIG_BLACKFIN ifdef redefining all musb registers in
musb_regs.h and tusb6010.h is never included causing a build
error with blackfin-allmodconfig and COMPILE_TEST.
Let's fix the issue by not building tusb6010 if CONFIG_BLACKFIN
is selected.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
While the Intel PMU monitors the LLC when perf enables the
HW_CACHE_REFERENCES and HW_CACHE_MISSES events, these events monitor
L1 instruction cache fetches (0x0080) and instruction cache misses
(0x0081) on the AMD PMU.
This is extremely confusing when monitoring the same workload across
Intel and AMD machines, since parameters like,
$ perf stat -e cache-references,cache-misses
measure completely different things.
Instead, make the AMD PMU measure instruction/data cache and TLB fill
requests to the L2 and instruction/data cache and TLB misses in the L2
when HW_CACHE_REFERENCES and HW_CACHE_MISSES are enabled,
respectively. That way the events measure unified caches on both
platforms.
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1472044328-21302-1-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Right now, the kernel address filters in PT are prone to integer overflow
that may happen in adding filter's size to its offset to obtain the end
of the range. Such an overflow would also throw a #GP in the PT event
configuration path.
Fix this by explicitly validating the result of this calculation.
Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: stable@vger.kernel.org # v4.7
Cc: stable@vger.kernel.org#v4.7
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160915151352.21306-4-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The kernel_ip() filter is used mostly by the DS/LBR code to look at the
branch addresses, but Intel PT also uses it to validate the address
filter offsets for kernel addresses, for which it is not sufficient:
supplying something in bits 64:48 that's not a sign extension of the lower
address bits (like 0xf00d000000000000) throws a #GP.
This patch adds address validation for the user supplied kernel filters.
Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: stable@vger.kernel.org # v4.7
Cc: stable@vger.kernel.org#v4.7
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160915151352.21306-3-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
PT address filter configuration requires that a range is specified by
its first and last address, but at the moment we're obtaining the end
of the range by adding user specified size to its start, which is off
by one from what it actually needs to be.
Fix this and make sure that zero-sized filters don't pass the filter
validation.
Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: stable@vger.kernel.org # v4.7
Cc: stable@vger.kernel.org#v4.7
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160915151352.21306-2-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Further testing with false negatives suppressed by commit 293e2421fe
("rcu: Remove superfluous versions of rcu_read_lock_sched_held()")
identified a few more unprotected uses of RCU from the idle loop.
Because RCU actively ignores idle-loop code (for energy-efficiency
reasons, among other things), using RCU from the idle loop can result
in too-short grace periods, in turn resulting in arbitrary misbehavior.
The affected function is rpm_suspend().
The resulting lockdep-RCU splat is as follows:
------------------------------------------------------------------------
Warning from omap3
===============================
[ INFO: suspicious RCU usage. ]
4.6.0-rc5-next-20160426+ #1112 Not tainted
-------------------------------
include/trace/events/rpm.h:63 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
RCU used illegally from idle CPU!
rcu_scheduler_active = 1, debug_locks = 0
RCU used illegally from extended quiescent state!
1 lock held by swapper/0/0:
#0: (&(&dev->power.lock)->rlock){-.-...}, at: [<c052ee24>] __pm_runtime_suspend+0x54/0x84
stack backtrace:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.6.0-rc5-next-20160426+ #1112
Hardware name: Generic OMAP36xx (Flattened Device Tree)
[<c0110308>] (unwind_backtrace) from [<c010c3a8>] (show_stack+0x10/0x14)
[<c010c3a8>] (show_stack) from [<c047fec8>] (dump_stack+0xb0/0xe4)
[<c047fec8>] (dump_stack) from [<c052d7b4>] (rpm_suspend+0x604/0x7e4)
[<c052d7b4>] (rpm_suspend) from [<c052ee34>] (__pm_runtime_suspend+0x64/0x84)
[<c052ee34>] (__pm_runtime_suspend) from [<c04bf3bc>] (omap2_gpio_prepare_for_idle+0x5c/0x70)
[<c04bf3bc>] (omap2_gpio_prepare_for_idle) from [<c01255e8>] (omap_sram_idle+0x140/0x244)
[<c01255e8>] (omap_sram_idle) from [<c0126b48>] (omap3_enter_idle_bm+0xfc/0x1ec)
[<c0126b48>] (omap3_enter_idle_bm) from [<c0601db8>] (cpuidle_enter_state+0x80/0x3d4)
[<c0601db8>] (cpuidle_enter_state) from [<c0183c74>] (cpu_startup_entry+0x198/0x3a0)
[<c0183c74>] (cpu_startup_entry) from [<c0b00c0c>] (start_kernel+0x354/0x3c8)
[<c0b00c0c>] (start_kernel) from [<8000807c>] (0x8000807c)
------------------------------------------------------------------------
Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This ensures that do_mmap() won't implicitly make AIO memory mappings
executable if the READ_IMPLIES_EXEC personality flag is set. Such
behavior is problematic because the security_mmap_file LSM hook doesn't
catch this case, potentially permitting an attacker to bypass a W^X
policy enforced by SELinux.
I have tested the patch on my machine.
To test the behavior, compile and run this:
#define _GNU_SOURCE
#include <unistd.h>
#include <sys/personality.h>
#include <linux/aio_abi.h>
#include <err.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/syscall.h>
int main(void) {
personality(READ_IMPLIES_EXEC);
aio_context_t ctx = 0;
if (syscall(__NR_io_setup, 1, &ctx))
err(1, "io_setup");
char cmd[1000];
sprintf(cmd, "cat /proc/%d/maps | grep -F '/[aio]'",
(int)getpid());
system(cmd);
return 0;
}
In the output, "rw-s" is good, "rwxs" is bad.
Signed-off-by: Jann Horn <jann@thejh.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Windows because it uses RTC periodic interrupts.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fix from Paolo Bonzini:
"One fix for an x86 regression in VM migration, mostly visible with
Windows because it uses RTC periodic interrupts"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: x86: correctly reset dest_map->vector when restoring LAPIC state
Kirill A Shutemov reports that the kernel doesn't try to cap dest_count
in any way, and uses the number to allocate kernel memory. This causes
high order allocation warnings in the kernel log if someone passes in a
big enough value. We should clamp the allocation at PAGE_SIZE to avoid
stressing the VM.
The two existing users of the dedupe ioctl never send more than 120
requests, so we can safely clamp dest_range at PAGE_SIZE, because with
4k pages we can handle up to 127 dedupe candidates. Given the max
extent length of 16MB, we can end up doing 2GB of IO which is plenty.
[ Note: the "offsetof()" can't overflow, because 'count' is just a
16-bit integer. That's not obvious in the limited context of the
patch, so I'm noting it here because it made me go look. - Linus ]
Reported-by: "Kirill A. Shutemov" <kirill@shutemov.name>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
All the VFS functions in the dedupe ioctl path return int status, so
the ioctl handler ought to as well.
Found by Coverity, CID 1350952.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull block fixes from Jens Axboe:
"A set of fixes for the current series in the realm of block.
Like the previous pull request, the meat of it are fixes for the nvme
fabrics/target code. Outside of that, just one fix from Gabriel for
not doing a queue suspend if we didn't get the admin queue setup in
the first place"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvme-rdma: add back dependency on CONFIG_BLOCK
nvme-rdma: fix null pointer dereference on req->mr
nvme-rdma: use ib_client API to detect device removal
nvme-rdma: add DELETING queue flag
nvme/quirk: Add a delay before checking device ready for memblaze device
nvme: Don't suspend admin queue that wasn't created
nvme-rdma: destroy nvme queue rdma resources on connect failure
nvme_rdma: keep a ref on the ctrl during delete/flush
iw_cxgb4: block module unload until all ep resources are released
iw_cxgb4: call dev_put() on l2t allocation failure
get_user_ex(x, ptr) should zero x on failure. It's not a lot of a leak
(at most we are leaking uninitialized 64bit value off the kernel stack,
and in a fairly constrained situation, at that), but the fix is trivial,
so...
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
[ This sat in different branch from the uaccess fixes since mid-August ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When userspace sends KVM_SET_LAPIC, KVM schedules a check between
the vCPU's IRR and ISR and the IOAPIC redirection table, in order
to re-establish the IOAPIC's dest_map (the list of CPUs servicing
the real-time clock interrupt with the corresponding vectors).
However, __rtc_irq_eoi_tracking_restore_one was forgetting to
set dest_map->vectors. Because of this, the IOAPIC did not process
the real-time clock interrupt EOI, ioapic->rtc_status.pending_eoi
got stuck at a non-zero value, and further RTC interrupts were
reported to userspace as coalesced.
Fixes: 9e4aabe2bb
Fixes: 4d99ba898d
Cc: stable@vger.kernel.org
Cc: Joerg Roedel <jroedel@suse.de>
Cc: David Gilbert <dgilbert@redhat.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Simply enabling CONFIG_KEYSTONE_USB_PHY doesn't work anymore
as it depends on CONFIG_NOP_USB_XCEIV. We need to enable
that as well.
This fixes USB on Keystone boards from v4.8-rc1 onwards.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
At the moment, intel_bts events get disabled from intel PMU's disable
callback, which includes event scheduling transactions of said PMU,
which have nothing to do with intel_bts events.
We do want to keep intel_bts events off inside the PMI handler to
avoid filling up their buffer too soon.
This patch moves intel_bts enabling/disabling directly to the PMI
handler.
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160915082233.11065-1-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
In commit f0228c4130 ("powerpc/powernv/pci: Fallback to OPAL for TCE
invalidations"), we added logic to fallback to OPAL for doing TCE
invalidations if we can't do it in Linux.
Ben sent a v2 of the patch, containing these additional call sites, but
I had already applied v1 and didn't notice. So fix them now.
Fixes: f0228c4130 ("powerpc/powernv/pci: Fallback to OPAL for TCE invalidations")
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The PCI hotplug can be part of EEH error recovery. The @pdn and
the device's PE number aren't removed and added afterwords. The
PE number in @pdn should be set to an invalid one. Otherwise, the
PE's device count is decreased on removing devices while failing
to be increased on adding devices. It leads to unbalanced PE's
device count and make normal PCI hotplug path broken.
Fixes: c5f7700bbd ("powerpc/powernv: Dynamically release PE")
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Enumeration
Mark Haswell Power Control Unit as having non-compliant BARs (Bjorn Helgaas)
Power management
Fix bridge_d3 update on device removal (Lukas Wunner)
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Merge tag 'pci-v4.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Here are two changes for v4.8. The first fixes a "[Firmware Bug]: reg
0x10: invalid BAR (can't size)" warning on Haswell, and the second
fixes a problem in some new runtime suspend functionality we merged
for v4.8. Summary:
Enumeration:
Mark Haswell Power Control Unit as having non-compliant BARs (Bjorn Helgaas)
Power management:
Fix bridge_d3 update on device removal (Lukas Wunner)"
* tag 'pci-v4.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Fix bridge_d3 update on device removal
PCI: Mark Haswell Power Control Unit as having non-compliant BARs
The ARM architected timer specification mandates that the interrupt
associated with each timer is level triggered (which corresponds to
the "counter >= comparator" condition).
A number of DTs are being remarkably creative, declaring the interrupt
to be edge triggered. A quick look at the TRM for the corresponding ARM
CPUs clearly shows that this is wrong, and I've corrected those.
For non-ARM designs (and in the absence of a publicly available TRM),
I've made them active low as well, which can't be completely wrong
as the GIC cannot disinguish between level low and level high.
The respective maintainers are of course welcome to prove me wrong.
While I was at it, I took the liberty to fix a couple of related issue,
such as some spurious affinity bits on ThunderX, and their complete
absence on ls1043a (both of which seem to be related to copy-pasting
from other DTs).
Acked-by: Duc Dang <dhdang@apm.com>
Acked-by: Carlo Caione <carlo@endlessm.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull uaccess fixes from Al Viro:
"Fixes for broken uaccess primitives - mostly lack of proper zeroing
in copy_from_user()/get_user()/__get_user(), but for several
architectures there's more (broken clear_user() on frv and
strncpy_from_user() on hexagon)"
* 'uaccess-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (28 commits)
avr32: fix copy_from_user()
microblaze: fix __get_user()
microblaze: fix copy_from_user()
m32r: fix __get_user()
blackfin: fix copy_from_user()
sparc32: fix copy_from_user()
sh: fix copy_from_user()
sh64: failing __get_user() should zero
score: fix copy_from_user() and friends
score: fix __get_user/get_user
s390: get_user() should zero on failure
ppc32: fix copy_from_user()
parisc: fix copy_from_user()
openrisc: fix copy_from_user()
nios2: fix __get_user()
nios2: copy_from_user() should zero the tail of destination
mn10300: copy_from_user() should zero on access_ok() failure...
mn10300: failing __get_user() and get_user() should zero
mips: copy_from_user() must zero the destination on access_ok() failure
ARC: uaccess: get_user to zero out dest in cause of fault
...
Al Viro