Commit Graph

677837 Commits

Author SHA1 Message Date
Soheil Hassas Yeganeh bafbb9c732 tcp: eliminate negative reordering in tcp_clean_rtx_queue
tcp_ack() can call tcp_fragment() which may dededuct the
value tp->fackets_out when MSS changes. When prior_fackets
is larger than tp->fackets_out, tcp_clean_rtx_queue() can
invoke tcp_update_reordering() with negative values. This
results in absurd tp->reodering values higher than
sysctl_tcp_max_reordering.

Note that tcp_update_reordering indeeds sets tp->reordering
to min(sysctl_tcp_max_reordering, metric), but because
the comparison is signed, a negative metric always wins.

Fixes: c7caf8d3ed ("[TCP]: Fix reord detection due to snd_una covered holes")
Reported-by: Rebecca Isaacs <risaacs@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-16 12:45:21 -04:00
Linus Torvalds 2b6b38b04c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:

 - convert the debug feature to refcount_t

 - reduce the copy size for strncpy_from_user

 - 8 bug fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/virtio: change virtio_feature_desc:features type to __le32
  s390: convert debug_info.ref_count from atomic_t to refcount_t
  s390: move _text symbol to address higher than zero
  s390/qdio: increase string buffer size
  s390/ccwgroup: increase string buffer size
  s390/topology: let topology_mnest_limit() return unsigned char
  s390/uaccess: use sane length for __strncpy_from_user()
  s390/uprobes: fix compile for !KPROBES
  s390/ftrace: fix compile for !MODULES
  s390/cputime: fix incorrect system time
2017-05-16 09:24:44 -07:00
Linus Torvalds bec6cd63aa One amd64_edac fix correcting chip select sizes reporting on F17h
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Merge tag 'edac_fix_for_4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC fix from Borislav Petkov:
 "A single amd64_edac fix correcting chip select sizes reporting on
  F17h"

* tag 'edac_fix_for_4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, amd64: Fix reporting of Chip Select sizes on Fam17h
2017-05-16 09:18:18 -07:00
Tony Lindgren aff523fb82 memory: omap-gpmc: Fix debug output for access width
The width needs to be configured in bytes with 1 meaning 8-bit
access and 2 meaning 16-bit access.

Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-05-16 08:12:47 -07:00
Adam Ford 56322e1232 ARM: dts: LogicPD Torpedo: Fix camera pin mux
Fix commit 05c4ffc3a2 ("ARM: dts: LogicPD Torpedo: Add MT9P031 Support")
In the previous commit, I indicated that the only testing was done by
showing the camera showed up when probing.  This patch fixes an incorrect
pin muxing on cam_d0, cam_d1 and cam_d2.

Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-05-16 08:12:47 -07:00
Hans Verkuil f0b8dca833 ARM: dts: omap4: enable CEC pin for Pandaboard A4 and ES
The CEC pin was always pulled up, making it impossible to use it.

Change to PIN_INPUT so it can be used by the new CEC support.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-05-16 08:10:07 -07:00
Andreas Kemnade 910958b65c ARM: dts: gta04: fix polarity of clocks for mcbsp4
The clock polarity setting of the mcbsp connected to
the modem was wrong so almost only noise
was received.
With this patch it is also the same as it was on
earlier non-dt kernels where it was working properly

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-05-16 08:08:52 -07:00
Keerthy 7c62de5f3f ARM: dts: dra7: Add power hold and power controller properties to palmas
Add power hold and power controller properties to palmas node.
This is needed to shutdown pmic correctly on boards with
powerhold set.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-05-16 08:06:04 -07:00
Thomas Gleixner 2c4569ca26 genirq: Fix chained interrupt data ordering
irq_set_chained_handler_and_data() sets up the chained interrupt and then
stores the handler data.

That's racy against an immediate interrupt which gets handled before the
store of the handler data happened. The handler will dereference a NULL
pointer and crash.

Cure it by storing handler data before installing the chained handler.

Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
2017-05-16 15:03:26 +02:00
Arnd Bergmann b72d745120 staging: fsl-dpaa2/eth: add ETHERNET dependency
The new driver cannot link correctly when the netdevice infrastructure
is disabled:

ERROR: "netdev_info" [drivers/staging/fsl-dpaa2/ethernet/fsl-dpaa2-eth.ko] undefined!
ERROR: "skb_to_sgvec" [drivers/staging/fsl-dpaa2/ethernet/fsl-dpaa2-eth.ko] undefined!
ERROR: "napi_disable" [drivers/staging/fsl-dpaa2/ethernet/fsl-dpaa2-eth.ko] undefined!
ERROR: "napi_schedule_prep" [drivers/staging/fsl-dpaa2/ethernet/fsl-dpaa2-eth.ko] undefined!
ERROR: "__napi_schedule_irqoff" [drivers/staging/fsl-dpaa2/ethernet/fsl-dpaa2-eth.ko] undefined!
ERROR: "netif_carrier_on" [drivers/staging/fsl-dpaa2/ethernet/fsl-dpaa2-eth.ko] undefined!

This adds a dependency on NETDEVICES and ETHERNET.

Fixes: 0352d1d852 ("staging: fsl-dpaa2/eth: Add APIs for DPNI objects")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-16 14:23:31 +02:00
Rui Miguel Silva 50b7c322cf staging: typec: fusb302: refactor resume retry mechanism
The i2c functions need to test the pm_suspend state and do, if needed, some
retry before i2c operations. This code was repeated 4x.

To isolate this, create a new function to check suspend state and call it in
every need place.

As at it, move the error message from pr_err to dev_err.

Signed-off-by: Rui Miguel Silva <rmfrfs@gmail.com>
Acked-by: Yueyao Zhu <yueyao.zhu@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-16 14:23:31 +02:00
Rui Miguel Silva f0d39a179b staging: typec: fusb302: reset i2c_busy state in error
Fix reset of i2c_busy flag if an error occurs during the i2c block read.

Signed-off-by: Rui Miguel Silva <rmfrfs@gmail.com>
Acked-by: Yueyao Zhu <yueyao.zhu@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-05-16 14:23:31 +02:00
Pan Bian 018047a1db usb: dwc3: keystone: check return value
Function devm_clk_get() returns an ERR_PTR when it fails. However, in
function kdwc3_probe(), its return value is not checked, which may
result in a bad memory access bug. This patch fixes the bug.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-05-16 14:11:04 +03:00
William Wu b7f73850bb usb: gadget: f_fs: avoid out of bounds access on comp_desc
Companion descriptor is only used for SuperSpeed endpoints,
if the endpoints are HighSpeed or FullSpeed, the Companion
descriptor will not allocated, so we can only access it if
gadget is SuperSpeed.

I can reproduce this issue on Rockchip platform rk3368 SoC
which supports USB 2.0, and use functionfs for ADB. Kernel
build with CONFIG_KASAN=y and CONFIG_SLUB_DEBUG=y report
the following BUG:

==================================================================
BUG: KASAN: slab-out-of-bounds in ffs_func_set_alt+0x224/0x3a0 at addr ffffffc0601f6509
Read of size 1 by task swapper/0/0
============================================================================
BUG kmalloc-256 (Not tainted): kasan: bad access detected
----------------------------------------------------------------------------

Disabling lock debugging due to kernel taint
INFO: Allocated in ffs_func_bind+0x52c/0x99c age=1275 cpu=0 pid=1
alloc_debug_processing+0x128/0x17c
___slab_alloc.constprop.58+0x50c/0x610
__slab_alloc.isra.55.constprop.57+0x24/0x34
__kmalloc+0xe0/0x250
ffs_func_bind+0x52c/0x99c
usb_add_function+0xd8/0x1d4
configfs_composite_bind+0x48c/0x570
udc_bind_to_driver+0x6c/0x170
usb_udc_attach_driver+0xa4/0xd0
gadget_dev_desc_UDC_store+0xcc/0x118
configfs_write_file+0x1a0/0x1f8
__vfs_write+0x64/0x174
vfs_write+0xe4/0x200
SyS_write+0x68/0xc8
el0_svc_naked+0x24/0x28
INFO: Freed in inode_doinit_with_dentry+0x3f0/0x7c4 age=1275 cpu=7 pid=247
...
Call trace:
[<ffffff900808aab4>] dump_backtrace+0x0/0x230
[<ffffff900808acf8>] show_stack+0x14/0x1c
[<ffffff90084ad420>] dump_stack+0xa0/0xc8
[<ffffff90082157cc>] print_trailer+0x188/0x198
[<ffffff9008215948>] object_err+0x3c/0x4c
[<ffffff900821b5ac>] kasan_report+0x324/0x4dc
[<ffffff900821aa38>] __asan_load1+0x24/0x50
[<ffffff90089eb750>] ffs_func_set_alt+0x224/0x3a0
[<ffffff90089d3760>] composite_setup+0xdcc/0x1ac8
[<ffffff90089d7394>] android_setup+0x124/0x1a0
[<ffffff90089acd18>] _setup+0x54/0x74
[<ffffff90089b6b98>] handle_ep0+0x3288/0x4390
[<ffffff90089b9b44>] dwc_otg_pcd_handle_out_ep_intr+0x14dc/0x2ae4
[<ffffff90089be85c>] dwc_otg_pcd_handle_intr+0x1ec/0x298
[<ffffff90089ad680>] dwc_otg_pcd_irq+0x10/0x20
[<ffffff9008116328>] handle_irq_event_percpu+0x124/0x3ac
[<ffffff9008116610>] handle_irq_event+0x60/0xa0
[<ffffff900811af30>] handle_fasteoi_irq+0x10c/0x1d4
[<ffffff9008115568>] generic_handle_irq+0x30/0x40
[<ffffff90081159b4>] __handle_domain_irq+0xac/0xdc
[<ffffff9008080e9c>] gic_handle_irq+0x64/0xa4
...
Memory state around the buggy address:
  ffffffc0601f6400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  ffffffc0601f6480: 00 00 00 00 00 00 00 00 00 00 06 fc fc fc fc fc
 >ffffffc0601f6500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                       ^
  ffffffc0601f6580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
  ffffffc0601f6600: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
==================================================================

Signed-off-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-05-16 14:11:04 +03:00
Bogdan Mirea 844cf8a9d5 usb: gadget: gserial: check if console kthread exists
Check for bad pointer that may result because of kthread_create failure.
This check is needed since the gserial setup callback function
(gs_console_setup()) is only freeing the info->con_buf in case of
kthread_create failure which will result into bad info->console_thread
pointer.
Without checking info->console_thread pointer validity in the
gserial_console_exit() function, before calling kthread_stop(), the
rmmod will generate Kernel Oops.

Signed-off-by: Bogdan Mirea <Bogdan-Stefan_mirea@mentor.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-05-16 14:11:04 +03:00
Thinh Nguyen d325a1de49 usb: dwc3: gadget: Prevent losing events in event cache
The dwc3 driver can overwite its previous events if its top-half IRQ
handler (TH) gets invoked again before processing the events in the
cache. We see this as a hang in the file transfer and the host will
attempt to reset the device. TH gets the event count and deasserts the
interrupt line by writing DWC3_GEVNTSIZ_INTMASK to DWC3_GEVNTSIZ. If
there's a new event coming between reading the event count and interrupt
deassertion, dwc3 will lose previous pending events. More generally, we
will see 0 event count, which should not affect anything.

This shouldn't be possible in the current dwc3 implementation. However,
through testing and reading the PCIe trace, the TH occasionally still
gets invoked one more time after HW interrupt deassertion. (With PCIe
legacy interrupts, TH is called repeatedly as long as the interrupt line
is asserted). We suspect that there is a small detection delay in the
SW.

To avoid this issue, Check DWC3_EVENT_PENDING flag to determine if the
events are processed in the bottom-half IRQ handler. If not, return
IRQ_HANDLED and don't process new event.

Cc: stable@vger.kernel.org
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-05-16 14:11:03 +03:00
Roger Quadros f1d6826cae usb: dwc3: gadget: Fix ISO transfer performance
Commit 08a36b5438 ("usb: dwc3: gadget: simplify __dwc3_gadget_ep_queue()")
caused a small change in the way ISO transfer is handled in the case
when XferInProgress event happens on Isoc EP with an active transfer.
This caused a performance degradation of 50%. e.g. using g_webcam on DUT
and luvcview on host the video frame rate dropped from 16fps to 8fps
@high-speed.

Make the ISO transfer handling equivalent to that prior to that commit
to get back the original ISO performance numbers.

Fixes: 08a36b5438 ("usb: dwc3: gadget: simplify __dwc3_gadget_ep_queue()")
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-05-16 14:11:03 +03:00
Heikki Krogerus 682179592e usb: dwc3: pci: add Intel Cannonlake PCI IDs
Intel Cannonlake PCH has the same DWC3 than Intel
Sunrisepoint. Add the new IDs to the supported devices.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-05-16 14:11:03 +03:00
Suzuki K Poulose 0c428a6a92 kvm: arm/arm64: Fix use after free of stage2 page table
We yield the kvm->mmu_lock occassionaly while performing an operation
(e.g, unmap or permission changes) on a large area of stage2 mappings.
However this could possibly cause another thread to clear and free up
the stage2 page tables while we were waiting for regaining the lock and
thus the original thread could end up in accessing memory that was
freed. This patch fixes the problem by making sure that the stage2
pagetable is still valid after we regain the lock. The fact that
mmu_notifer->release() could be called twice (via __mmu_notifier_release
and mmu_notifier_unregsister) enhances the possibility of hitting
this race where there are two threads trying to unmap the entire guest
shadow pages.

While at it, cleanup the redudant checks around cond_resched_lock in
stage2_wp_range(), as cond_resched_lock already does the same checks.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: andreyknvl@google.com
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: stable@vger.kernel.org
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
2017-05-16 11:54:25 +02:00
Suzuki K Poulose 2952a6070e kvm: arm/arm64: Force reading uncached stage2 PGD
Make sure we don't use a cached value of the KVM stage2 PGD while
resetting the PGD.

Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
2017-05-16 11:54:00 +02:00
Naveen N. Rao d04c02f8aa powerpc/kprobes: Fix handling of instruction emulation on probe re-entry
Commit 22d8b3dec2 ("powerpc/kprobes: Emulate instructions on kprobe
handler re-entry") enabled emulating instructions on kprobe re-entry,
rather than single-stepping always. However, we didn't update the single
stepping code to only be run if the emulation fails. Also, we missed
re-enabling preemption if the instruction emulation was successful. Fix
those issues.

Fixes: 22d8b3dec2 ("powerpc/kprobes: Emulate instructions on kprobe handler re-entry")
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-05-16 13:11:07 +10:00
Gautham R. Shenoy bbb075ddf7 powerpc/powernv: Set NAPSTATELOST after recovering paca on P9 DD1
Commit 17ed4c8f81 ("powerpc/powernv: Recover correct PACA on wakeup
from a stop on P9 DD1") promises to set the NAPSTATELOST bit in paca
after recovering the correct paca for the thread waking up from stop1
on DD1, so that the GPRs can be correctly restored on the stop exit
path. However, it loads the value 1 into r3, but stores the value in
r0 into NAPSTATELOST(r13).

Fix this by correctly set the NAPSTATELOST bit in paca after
recovering the paca on POWER9 DD1.

Fixes: 17ed4c8f81 ("powerpc/powernv: Recover correct PACA on wakeup from a stop on P9 DD1")
Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-05-16 13:03:21 +10:00
Michael Neuling cde97f8492 selftests/powerpc: Test TM and VMX register state
Test that the VMX checkpointed register state is maintained when a VMX
unavailable exception is taken during a transaction.

Thanks to Breno Leitao <brenohl@br.ibm.com> and
Gustavo Bueno Romero <gromero@br.ibm.com> for the original test this
is based heavily on.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Reviewed-by: Cyril Bur <cyrilbur@gmail.com>
[mpe: Add to .gitignore, always build it 64-bit to fix build errors]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-05-16 13:03:05 +10:00
Linus Torvalds a95cfad947 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Track alignment in BPF verifier so that legitimate programs won't be
    rejected on !CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS architectures.

 2) Make tail calls work properly in arm64 BPF JIT, from Deniel
    Borkmann.

 3) Make the configuration and semantics Generic XDP make more sense and
    don't allow both generic XDP and a driver specific instance to be
    active at the same time. Also from Daniel.

 4) Don't crash on resume in xen-netfront, from Vitaly Kuznetsov.

 5) Fix use-after-free in VRF driver, from Gao Feng.

 6) Use netdev_alloc_skb_ip_align() to avoid unaligned IP headers in
    qca_spi driver, from Stefan Wahren.

 7) Always run cleanup routines in BPF samples when we get SIGTERM, from
    Andy Gospodarek.

 8) The mdio phy code should bring PHYs out of reset using the shared
    GPIO lines before invoking bus->reset(). From Florian Fainelli.

 9) Some USB descriptor access endian fixes in various drivers from
    Johan Hovold.

10) Handle PAUSE advertisements properly in mlx5 driver, from Gal
    Pressman.

11) Fix reversed test in mlx5e_setup_tc(), from Saeed Mahameed.

12) Cure netdev leak in AF_PACKET when using timestamping via control
    messages. From Douglas Caetano dos Santos.

13) netcp doesn't support HWTSTAMP_FILTER_ALl, reject it. From Miroslav
    Lichvar.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits)
  ldmvsw: stop the clean timer at beginning of remove
  ldmvsw: unregistering netdev before disable hardware
  net: netcp: fix check of requested timestamping filter
  ipv6: avoid dad-failures for addresses with NODAD
  qed: Fix uninitialized data in aRFS infrastructure
  mdio: mux: fix device_node_continue.cocci warnings
  net/packet: fix missing net_device reference release
  net/mlx4_core: Use min3 to select number of MSI-X vectors
  macvlan: Fix performance issues with vlan tagged packets
  net: stmmac: use correct pointer when printing normal descriptor ring
  net/mlx5: Use underlay QPN from the root name space
  net/mlx5e: IPoIB, Only support regular RQ for now
  net/mlx5e: Fix setup TC ndo
  net/mlx5e: Fix ethtool pause support and advertise reporting
  net/mlx5e: Use the correct pause values for ethtool advertising
  vmxnet3: ensure that adapter is in proper state during force_close
  sfc: revert changes to NIC revision numbers
  net: ch9200: add missing USB-descriptor endianness conversions
  net: irda: irda-usb: fix firmware name on big-endian hosts
  net: dsa: mv88e6xxx: add default case to switch
  ...
2017-05-15 15:50:49 -07:00
Linus Torvalds 1319a2856d Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
 "A set of minor cifs fixes"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  [CIFS] Minor cleanup of xattr query function
  fs: cifs: transport: Use time_after for time comparison
  SMB2: Fix share type handling
  cifs: cifsacl: Use a temporary ops variable to reduce code length
  Don't delay freeing mids when blocked on slow socket write of request
  CIFS: silence lockdep splat in cifs_relock_file()
2017-05-15 15:27:02 -07:00
Jens Axboe d3f7c35c1a Merge branch 'stable/for-jens-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-linus
Pull a single fix from Konrad.
2017-05-15 15:33:06 -06:00
Gustavo A. R. Silva 2d4456c73a block: xen-blkback: add null check to avoid null pointer dereference
Add null check before calling xen_blkif_put() to avoid potential
null pointer dereference.

Addresses-Coverity-ID: 1350942
Cc: Juergen Gross <jgross@suse.com>
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2017-05-15 17:14:28 -04:00
David S. Miller 66f4bc819d Merge branch 'ldmsw-fixes'
Shannon Nelson says:

====================
ldmvsw: port removal stability

Under heavy reboot stress testing we found a couple of timing issues
when removing the device that could cause the kernel great heartburn,
addressed by these two patches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 15:36:09 -04:00
Shannon Nelson 8b671f906c ldmvsw: stop the clean timer at beginning of remove
Stop the clean timer earlier to be sure there's no asynchronous
interference while stopping the port.

Orabug: 25748241

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 15:36:08 -04:00
Thomas Tai b18e5e86b4 ldmvsw: unregistering netdev before disable hardware
When running LDom binding/unbinding test, kernel may panic
in ldmvsw_open(). It is more likely that because we're removing
the ldc connection before unregistering the netdev in vsw_port_remove(),
we set up a window of time where one process could be removing the
device while another trying to UP the device. This also sometimes causes
vio handshake error due to opening a device without closing it completely.
We should unregister the netdev before we disable the "hardware".

Orabug: 25980913, 25925306

Signed-off-by: Thomas Tai <thomas.tai@oracle.com>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 15:36:08 -04:00
Miroslav Lichvar ca9df7ede4 net: netcp: fix check of requested timestamping filter
The driver doesn't support timestamping of all received packets and
should return error when trying to enable the HWTSTAMP_FILTER_ALL
filter.

Cc: WingMan Kwok <w-kwok2@ti.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 15:21:03 -04:00
Christoph Hellwig f98e0eb680 dm mpath: multipath_clone_and_map must not return -EIO
Since 412445ac ("dm: introduce a new DM_MAPIO_KILL return value"), the
clone_and_map_rq methods must not return errno values, so fix it up
to properly return DM_MAPIO_KILL, instead of the -EIO value that snuck
in due to a conflict between two patches.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2017-05-15 15:09:53 -04:00
Christoph Hellwig 18a482f524 dm mpath: don't return -EIO from dm_report_EIO
Instead just turn the macro into a helper for the warning message.
This removes an unnecessary assignment and will allow the next commit to
fix a place where -EIO is the wrong return value.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2017-05-15 15:09:52 -04:00
Christoph Hellwig ece0728037 dm rq: add a missing break to map_request
We don't want to bug when receiving a DM_MAPIO_KILL value..

Fixes: 412445ac ("dm: introduce a new DM_MAPIO_KILL return value")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2017-05-15 15:09:51 -04:00
Joe Thornber 0377a07c7a dm space map disk: fix some book keeping in the disk space map
When decrementing the reference count for a block, the free count wasn't
being updated if the reference count went to zero.

Cc: stable@vger.kernel.org
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2017-05-15 15:09:50 -04:00
Joe Thornber 91bcdb92d3 dm thin metadata: call precommit before saving the roots
These calls were the wrong way round in __write_initial_superblock.

Cc: stable@vger.kernel.org
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2017-05-15 15:09:49 -04:00
David S. Miller 42a928ced3 mlx5-fixes-2017-05-12
Misc fixes for mlx5 driver
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Merge tag 'mlx5-fixes-2017-05-12-V2' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2017-05-12

This series contains some mlx5 fixes for net.
Please pull and let me know if there's any problem.

For -stable:
("net/mlx5e: Fix ethtool pause support and advertise reporting") kernels >= 4.8
("net/mlx5e: Use the correct pause values for ethtool advertising") kernels >= 4.8

v1->v2:
 Dropped statistics spinlock patch, it needs some extra work.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 14:38:04 -04:00
Mahesh Bandewar 66eb9f86e5 ipv6: avoid dad-failures for addresses with NODAD
Every address gets added with TENTATIVE flag even for the addresses with
IFA_F_NODAD flag and dad-work is scheduled for them. During this DAD process
we realize it's an address with NODAD and complete the process without
sending any probe. However the TENTATIVE flags stays on the
address for sometime enough to cause misinterpretation when we receive a NS.
While processing NS, if the address has TENTATIVE flag, we mark it DADFAILED
and endup with an address that was originally configured as NODAD with
DADFAILED.

We can't avoid scheduling dad_work for addresses with NODAD but we can
avoid adding TENTATIVE flag to avoid this racy situation.

Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 14:31:51 -04:00
Mintz, Yuval aa4ad88cfc qed: Fix uninitialized data in aRFS infrastructure
Current memset is using incorrect type of variable, causing the
upper-half of the strucutre to be left uninitialized and causing:

  ethernet/qlogic/qed/qed_init_fw_funcs.c: In function 'qed_set_rfs_mode_disable':
  ethernet/qlogic/qed/qed_init_fw_funcs.c:993:3: error: '*((void *)&ramline+4)' is used uninitialized in this function [-Werror=uninitialized]

Fixes: d51e4af5c2 ("qed: aRFS infrastructure support")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 14:31:27 -04:00
Julia Lawall 8c977f5a85 mdio: mux: fix device_node_continue.cocci warnings
Device node iterators put the previous value of the index variable, so an
explicit put causes a double put.

In particular, of_mdiobus_register can fail before doing anything
interesting, so one could view it as a no-op from the reference count
point of view.

Generated by: scripts/coccinelle/iterators/device_node_continue.cocci

CC: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 14:28:10 -04:00
Douglas Caetano dos Santos d19b183cdc net/packet: fix missing net_device reference release
When using a TX ring buffer, if an error occurs processing a control
message (e.g. invalid message), the net_device reference is not
released.

Fixes c14ac9451c ("sock: enable timestamping using control messages")
Signed-off-by: Douglas Caetano dos Santos <douglascs@taghos.com.br>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 14:22:12 -04:00
yuval.shaia@oracle.com 4762010f09 net/mlx4_core: Use min3 to select number of MSI-X vectors
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 14:20:26 -04:00
Vlad Yasevich 70957eaecc macvlan: Fix performance issues with vlan tagged packets
Macvlan always turns on offload features that have sofware
fallback (NETIF_GSO_SOFTWARE).  This allows much higher guest-guest
communications over macvtap.

However, macvtap does not turn on these features for vlan tagged traffic.
As a result, depending on the HW that mactap is configured on, the
performance of guest-guest communication over a vlan is very
inconsistent.  If the HW supports TSO/UFO over vlans, then the
performance will be fine.  If not, the the performance will suffer
greatly since the VM may continue using TSO/UFO, and will force the host
segment the traffic and possibly overlow the macvtap queue.

This patch adds the always on offloads to vlan_features.  This
makes sure that any vlan tagged traffic between 2 guest will not
be segmented needlessly.

Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-15 14:18:11 -04:00
Ganapatrao Kulkarni 78a19cfdf3 arm64: perf: Ignore exclude_hv when kernel is running in HYP
commit d98ecdaca2 ("arm64: perf: Count EL2 events if the kernel is
running in HYP") returns -EINVAL when perf system call perf_event_open is
called with exclude_hv != exclude_kernel. This change breaks applications
on VHE enabled ARMv8.1 platforms. The issue was observed with HHVM
application, which calls perf_event_open with exclude_hv = 1 and
exclude_kernel = 0.

There is no separate hypervisor privilege level when VHE is enabled, the
host kernel runs at EL2. So when VHE is enabled, we should ignore
exclude_hv from the application. This behaviour is consistent with PowerPC
where the exclude_hv is ignored when the hypervisor is not present and with
x86 where this flag is ignored.

Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
[will: added comment to justify the behaviour of exclude_hv]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-15 18:30:37 +01:00
Robin Murphy 8df728e1ae arm64: Remove redundant mov from LL/SC cmpxchg
The cmpxchg implementation introduced by commit c342f78217 ("arm64:
cmpxchg: patch in lse instructions when supported by the CPU") performs
an apparently redundant register move of [old] to [oldval] in the
success case - it always uses the same register width as [oldval] was
originally loaded with, and is only executed when [old] and [oldval] are
known to be equal anyway.

The only effect it seemingly does have is to take up a surprising amount
of space in the kernel text, as removing it reveals:

   text	   data	    bss	    dec	    hex	filename
12426658	1348614	4499749	18275021	116dacd	vmlinux.o.new
12429238	1348614	4499749	18277601	116e4e1	vmlinux.o.old

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-05-15 18:30:10 +01:00
Peter Rosin 9fce894d03 i2c: mux: only print failure message on error
As is, a failure message is printed unconditionally, which is confusing.
And noisy.

Fixes: 8d4d159f25 ("i2c: mux: provide more info on failure in i2c_mux_add_adapter")
Signed-off-by: Peter Rosin <peda@axentia.se>
2017-05-15 18:49:11 +02:00
Peter Rosin a36d4637e4 i2c: mux: reg: rename label to indicate what it does
That maintains sanity if it is ever called from some other spot, and
also makes the label names coherent.

Signed-off-by: Peter Rosin <peda@axentia.se>
2017-05-15 18:49:10 +02:00
Peter Rosin 68118e0e73 i2c: mux: reg: put away the parent i2c adapter on probe failure
It is only prudent to let go of resources that are not used.

Fixes: b3fdd32799 ("i2c: mux: Add register-based mux i2c-mux-reg")
Signed-off-by: Peter Rosin <peda@axentia.se>
2017-05-15 18:44:58 +02:00
Paolo Bonzini 0780516a18 KVM: nVMX: fix EPT permissions as reported in exit qualification
This fixes the new ept_access_test_read_only and ept_access_test_read_write
testcases from vmx.flat.

The problem is that gpte_access moves bits around to switch from EPT
bit order (XWR) to ACC_*_MASK bit order (RWX).  This results in an
incorrect exit qualification.  To fix this, make pt_access and
pte_access operate on raw PTE values (only with NX flipped to mean
"can execute") and call gpte_access at the end of the walk.  This
lets us use pte_access to compute the exit qualification with XWR
bit order.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Xiao Guangrong <xiaoguangrong@tencent.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-05-15 18:22:40 +02:00
Wanpeng Li fce6ac4c05 KVM: VMX: Don't enable EPT A/D feature if EPT feature is disabled
We can observe eptad kvm_intel module parameter is still Y
even if ept is disabled which is weird. This patch will
not enable EPT A/D feature if EPT feature is disabled.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-05-15 16:08:57 +02:00