sfrench/cifs-2.6.git
2 years agoMerge remote-tracking branches 'asoc/topic/rl6231' and 'asoc/topic/rt5514' into asoc...
Mark Brown [Fri, 26 Jan 2018 15:27:28 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/rl6231' and 'asoc/topic/rt5514' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/nau8825' and 'asoc/topic/nuc900' into...
Mark Brown [Fri, 26 Jan 2018 15:27:26 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/nau8825' and 'asoc/topic/nuc900' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/mtk', 'asoc/topic/mxs', 'asoc/topic/mxs...
Mark Brown [Fri, 26 Jan 2018 15:27:22 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/mtk', 'asoc/topic/mxs', 'asoc/topic/mxs-sgtl5000', 'asoc/topic/nau8540' and 'asoc/topic/nau8824' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/max98926', 'asoc/topic/max98927', 'asoc...
Mark Brown [Fri, 26 Jan 2018 15:27:18 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/max98926', 'asoc/topic/max98927', 'asoc/topic/mc13783', 'asoc/topic/msm8916' and 'asoc/topic/mt8173' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/hdac_hdmi', 'asoc/topic/hisilicon', 'asoc...
Mark Brown [Fri, 26 Jan 2018 15:27:15 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/hdac_hdmi', 'asoc/topic/hisilicon', 'asoc/topic/iio' and 'asoc/topic/max98373' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/eukrea-tlv320', 'asoc/topic/fsl', 'asoc...
Mark Brown [Fri, 26 Jan 2018 15:27:12 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/eukrea-tlv320', 'asoc/topic/fsl', 'asoc/topic/fsl-ssi' and 'asoc/topic/fsl_asrc' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/davinci', 'asoc/topic/debugfs', 'asoc...
Mark Brown [Fri, 26 Jan 2018 15:27:09 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/davinci', 'asoc/topic/debugfs', 'asoc/topic/disconnect', 'asoc/topic/dmic' and 'asoc/topic/ep93xx' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/cs47l24', 'asoc/topic/cx20442', 'asoc...
Mark Brown [Fri, 26 Jan 2018 15:27:06 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/cs47l24', 'asoc/topic/cx20442', 'asoc/topic/da7213', 'asoc/topic/da7218' and 'asoc/topic/dai-drv' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/cs35l32', 'asoc/topic/cs35l34', 'asoc...
Mark Brown [Fri, 26 Jan 2018 15:27:02 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/cs35l32', 'asoc/topic/cs35l34', 'asoc/topic/cs42l52', 'asoc/topic/cs42l56' and 'asoc/topic/cs42l73' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/bcm2835', 'asoc/topic/codecs', 'asoc/topic...
Mark Brown [Fri, 26 Jan 2018 15:27:00 +0000 (15:27 +0000)]
Merge remote-tracking branches 'asoc/topic/bcm2835', 'asoc/topic/codecs', 'asoc/topic/compress' and 'asoc/topic/cq93vc' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/topic/88pm860x', 'asoc/topic/ak4613', 'asoc...
Mark Brown [Fri, 26 Jan 2018 15:26:56 +0000 (15:26 +0000)]
Merge remote-tracking branches 'asoc/topic/88pm860x', 'asoc/topic/ak4613', 'asoc/topic/amd', 'asoc/topic/atmel' and 'asoc/topic/au1x' into asoc-next

2 years agoMerge remote-tracking branch 'asoc/topic/twl-breakage' into asoc-next
Mark Brown [Fri, 26 Jan 2018 15:26:54 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/topic/twl-breakage' into asoc-next

2 years agoMerge remote-tracking branch 'asoc/topic/rockchip' into asoc-next
Mark Brown [Fri, 26 Jan 2018 15:26:53 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/topic/rockchip' into asoc-next

2 years agoMerge remote-tracking branch 'asoc/topic/rcar' into asoc-next
Mark Brown [Fri, 26 Jan 2018 15:26:51 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/topic/rcar' into asoc-next

2 years agoMerge remote-tracking branch 'asoc/topic/qcom' into asoc-next
Mark Brown [Fri, 26 Jan 2018 15:26:49 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/topic/qcom' into asoc-next

2 years agoMerge remote-tracking branch 'asoc/topic/pcm512x' into asoc-next
Mark Brown [Fri, 26 Jan 2018 15:26:48 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/topic/pcm512x' into asoc-next

2 years agoMerge remote-tracking branch 'asoc/topic/pcm186x' into asoc-next
Mark Brown [Fri, 26 Jan 2018 15:26:47 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/topic/pcm186x' into asoc-next

2 years agoMerge remote-tracking branch 'asoc/topic/pcm' into asoc-next
Mark Brown [Fri, 26 Jan 2018 15:26:45 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/topic/pcm' into asoc-next

2 years agoMerge remote-tracking branch 'asoc/topic/intel' into asoc-next
Mark Brown [Fri, 26 Jan 2018 15:26:44 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/topic/intel' into asoc-next

2 years agoMerge remote-tracking branch 'asoc/topic/core' into asoc-next
Mark Brown [Fri, 26 Jan 2018 15:26:42 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/topic/core' into asoc-next

2 years agoMerge remote-tracking branches 'asoc/fix/compress' and 'asoc/fix/mtk' into asoc-linus
Mark Brown [Fri, 26 Jan 2018 15:26:39 +0000 (15:26 +0000)]
Merge remote-tracking branches 'asoc/fix/compress' and 'asoc/fix/mtk' into asoc-linus

2 years agoMerge remote-tracking branch 'asoc/fix/rockchip' into asoc-linus
Mark Brown [Fri, 26 Jan 2018 15:26:38 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/fix/rockchip' into asoc-linus

2 years agoMerge remote-tracking branch 'asoc/fix/intel' into asoc-linus
Mark Brown [Fri, 26 Jan 2018 15:26:36 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/fix/intel' into asoc-linus

2 years agoMerge remote-tracking branch 'asoc/fix/core' into asoc-linus
Mark Brown [Fri, 26 Jan 2018 15:26:35 +0000 (15:26 +0000)]
Merge remote-tracking branch 'asoc/fix/core' into asoc-linus

2 years agoASoC: compress: Fixup error messages
Charles Keepax [Fri, 26 Jan 2018 13:08:45 +0000 (13:08 +0000)]
ASoC: compress: Fixup error messages

The error message prints are a little inconsisent, tidy them up to be a
little more consistent with current style recommendations.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: compress: Remove some extraneous blank lines
Charles Keepax [Fri, 26 Jan 2018 13:08:44 +0000 (13:08 +0000)]
ASoC: compress: Remove some extraneous blank lines

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoMerge branch 'fix/compress' of https://git.kernel.org/pub/scm/linux/kernel/git/brooni...
Mark Brown [Fri, 26 Jan 2018 15:24:49 +0000 (15:24 +0000)]
Merge branch 'fix/compress' of https://git./linux/kernel/git/broonie/sound into asoc-compress

2 years agoASoC: compress: Correct handling of copy callback
Charles Keepax [Fri, 26 Jan 2018 13:08:43 +0000 (13:08 +0000)]
ASoC: compress: Correct handling of copy callback

The soc_compr_copy callback is currently broken. Since the
changes to move the compr_ops over to the component the return
value is not correctly propagated, always returning zero on
success rather than the number of bytes copied. This causes
user-space to stall continuously reading as it does not believe
it has received any data.

Furthermore, the changes to move the compr_ops over to the
component iterate through the list of components and will call
the copy callback for any that have compressed ops. There isn't
currently any consensus on the mechanism to combine the results
of multiple copy callbacks.

To fix this issue for now halt searching the component list when
we locate a copy callback and return the result of that single
callback. Additional work should probably be done to look at the
other ops, tidy things up, and work out if we want to support
multiple components on a single compressed, but this is the only
fix required to get things working again.

Fixes: 9e7e3738ab0e ("ASoC: snd_soc_component_driver has snd_compr_ops")
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
2 years agoASoC: Intel: kbl: Enable mclk and ssp sclk early
Harsha Priya [Thu, 4 Jan 2018 11:25:16 +0000 (16:55 +0530)]
ASoC: Intel: kbl: Enable mclk and ssp sclk early

rt5663 needs mclk/sclk early to synchronize its internal clocks. Enable
these clocks early.

Signed-off-by: Harsha Priya <harshapriya.n@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: Intel: Skylake: Add extended I2S config blob support in Clock driver
Sriram Periyasamy [Thu, 4 Jan 2018 11:25:15 +0000 (16:55 +0530)]
ASoC: Intel: Skylake: Add extended I2S config blob support in Clock driver

Extended I2S config blob supports multiple mclk dividers in NHLT blob.
This patch detects whether the I2S blob is legacy or extended based on the
signature value and chooses the mclk source and divider accordingly.

Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: Intel: Skylake: Add ssp clock driver
Sriram Periyasamy [Thu, 4 Jan 2018 11:25:14 +0000 (16:55 +0530)]
ASoC: Intel: Skylake: Add ssp clock driver

For certain platforms, it is required to start the clocks (mclk/sclk/fs)
before the stream start. Example: for few chrome systems, codec needs the
mclk/sclk to be enabled early for a successful clock synchronization and
for few IVI platforms, clock need to be enabled at boot and should be ON
always.

Add the required structures and create set_dma_control ipc to enable or
disable the clock. To enable sclk without fs, mclk ipc structure is used,
else sclkfs ipc structure is used.

Clock prepare/unprepare are used to enable/disable the clock as the IPC
will be sent in non-atomic context. The clk set_dma_control IPC
structures are populated during the set_rate callback and IPC is sent
to enable the clock during prepare callback.

This patch creates virtual clock driver, which allows the machine driver
to use the clock interface to send IPCs to DSP to enable/disable the
clocks.

Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@intel.com>
Signed-off-by: Jaikrishna Nemallapudi <jaikrishnax.nemallapudi@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: Fix twl4030 and 6040 regression by adding back read and write
Tony Lindgren [Thu, 25 Jan 2018 17:35:05 +0000 (09:35 -0800)]
ASoC: Fix twl4030 and 6040 regression by adding back read and write

Commit 3bb0f7c31b1a ("ASoC: don't use snd_soc_write/read on twl4030")
caused regressions for both twl4030 and twl6040 as it assumes the
ASoC driver is using regmap. As a side effect, this also causes a
considerable increase in idle power consumption omap3 boards using
twl4030 as the PMIC.

This is because the removal of read and write function pointers
causes some of the ASoC IO functions to not do anything. For example,
snd_soc_register_card() calls snd_soc_dapm_new_widgets() that calls
snd_soc_codec_drv_read() that now does nothing.

A long term solution suggested by Mark Brown <broonie@kernel.org>
is to make the twl drivers use regmap by adding a call to
snd_soc_codec_set_regmap(). This however needs more consideration
as currently the driver internal reads do caching and we would have
both regmap access and internal read/write access accessing the same
hardware registers.

So to fix the regression, let's just do a partial revert adding back
the read and write function pointers. Note that other non-regmap
ASoC drivers may need similar patches.

Fixes: 3bb0f7c31b1a ("ASoC: don't use snd_soc_write/read on twl4030")
Fixes: 93a00c467fe9 ("ASoC: don't use snd_soc_write/read on twl6040")
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoMerge branches 'topic/twl4030' and 'topic/twl6040' of https://git.kernel.org/pub...
Mark Brown [Thu, 25 Jan 2018 18:16:26 +0000 (18:16 +0000)]
Merge branches 'topic/twl4030' and 'topic/twl6040' of https://git./linux/kernel/git/broonie/sound into asoc-twl-breakage

2 years agoASoC: rockchip: Use dummy_dai for rt5514 dsp dailink
Jeffy Chen [Tue, 21 Nov 2017 08:25:17 +0000 (16:25 +0800)]
ASoC: rockchip: Use dummy_dai for rt5514 dsp dailink

The rt5514 dsp captures pcm data through spi directly, so we should not
use rockchip-i2s as it's cpu dai like other codecs.

Use dummy_dai for rt5514 dsp dailink to make voice wakeup work again.

Reported-by: Jimmy Cheng-Yi Chiang <cychiang@google.com>
Fixes: (72cfb0f20c75 ASoC: rockchip: Use codec of_node and dai_name for rt5514 dsp)
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: soc-pcm: rename .pmdown_time to .use_pmdown_time for Component
Kuninori Morimoto [Fri, 19 Jan 2018 05:21:19 +0000 (05:21 +0000)]
ASoC: soc-pcm: rename .pmdown_time to .use_pmdown_time for Component

commit fbb16563c6c2 ("ASoC: snd_soc_component_driver has pmdown_time")
added new .pmdown_time which is for inverted version of current
.ignore_pmdown_time
But it is confusable name. Let's rename it to .use_pmdown_time

Reported-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: ak4613: call dummy write for PW_MGMT1/3 when Playback
Kuninori Morimoto [Wed, 24 Jan 2018 05:11:42 +0000 (05:11 +0000)]
ASoC: ak4613: call dummy write for PW_MGMT1/3 when Playback

Power Down Release Command (PMVR, PMDAC, RSTN, PMDA1-PMDA6)
which are located on PW_MGMT1 / PW_MGMT3 register must be
write again after at least 5 LRCK cycle or later on each command.
Otherwise, Playback volume will be 0dB.
Basically, it should be

        1.   PowerDownRelease by Power Management1 <= call 1.x after 5LRCK
        1.x  Dummy write      to Power Management1
        2.   PowerDownRelease by Power Management3 <= call 2.x after 5LRCK
        2.x  Dummy write      to Power Management3

To avoid too many dummy write, this patch is merging these.

        1.   PowerDownRelease by Power Management1
        2.   PowerDownRelease by Power Management3   <= call after 5LRCK
        2.x  Dummy write      to Power Management1/3 <= merge dummy write

This patch adds dummy write when Playback Start timing.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: soc-pcm: don't call flush_delayed_work() many times in soc_pcm_private_free()
Kuninori Morimoto [Wed, 24 Jan 2018 05:18:46 +0000 (05:18 +0000)]
ASoC: soc-pcm: don't call flush_delayed_work() many times in soc_pcm_private_free()

commit f523acebbb74 ("ASoC: add Component level pcm_new/pcm_free v2")
added component level pcm_new/pcm_free, but flush_delayed_work()
on soc_pcm_private_free() is called in for_each_rtdcom() loop.
It doesn't need to be called many times.
This patch moves it out of loop.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: soc-core: snd_soc_rtdcom_lookup() cares component driver name
Kuninori Morimoto [Tue, 23 Jan 2018 00:41:24 +0000 (00:41 +0000)]
ASoC: soc-core: snd_soc_rtdcom_lookup() cares component driver name

snd_soc_rtdcom_lookup() look up component by uisng driver name.
Then, it uses component->driver->name.
Some driver might doesn't have it, thus it should care NULL pointer.
This patch solve this issue.

Reported-by: Mukunda,Vijendar <vijendar.mukunda@amd.com>
Reported-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Mukunda,Vijendar <vijendar.mukunda@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: max98373 Changed SPDX header in C++ comments style
Ryan Lee [Thu, 18 Jan 2018 21:37:03 +0000 (13:37 -0800)]
ASoC: max98373 Changed SPDX header in C++ comments style

Signed-off-by: Ryan Lee <ryans.lee@maximintegrated.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: dmic: Fix check of return value from read of 'num-channels'
Matthias Kaehlcke [Fri, 19 Jan 2018 23:36:50 +0000 (15:36 -0800)]
ASoC: dmic: Fix check of return value from read of 'num-channels'

Commit 7fb59e940f62 ("ASoC: codecs: dmic: Make number of channels
 configurable") introduces an optional property to the device tree
to specify the number of DMIC channels. dmic_codec_probe() uses
of_property_read_u32() to read the DT value, and expects a return
value of -ENOENT when the property does not exist. This expectation
is incorrect, the actual value returned in this case is -EINVAL (see
of_find_property_value_of_size(), which is called under the hood).
Check for -EINVAL instead.

Fixes: 7fb59e940f62 ("ASoC: codecs: dmic: Make number of channels configurable")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoASoC: mediatek: fix double free in mt2701_afe_pcm_dev_probe()
Ryder Lee [Mon, 22 Jan 2018 11:33:05 +0000 (19:33 +0800)]
ASoC: mediatek: fix double free in mt2701_afe_pcm_dev_probe()

The commit dfa3cbb8(ASoC: mediatek: modify MT2701 AFE driver to adapt mfd device)
leads to the following static checker warning:

sound/soc/mediatek/mt2701/mt2701-afe-pcm.c:1535 mt2701_afe_pcm_dev_probe()
error: double free of 'component'

This patch fixes that and adds a helper mt2701_afe_add_component() to setup
component.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoLinux 4.15-rc9 v4.15-rc9
Linus Torvalds [Sun, 21 Jan 2018 21:51:26 +0000 (13:51 -0800)]
Linux 4.15-rc9

2 years agoMerge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 21 Jan 2018 18:48:35 +0000 (10:48 -0800)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 pti fixes from Thomas Gleixner:
 "A small set of fixes for the meltdown/spectre mitigations:

   - Make kprobes aware of retpolines to prevent probes in the retpoline
     thunks.

   - Make the machine check exception speculation protected. MCE used to
     issue an indirect call directly from the ASM entry code. Convert
     that to a direct call into a C-function and issue the indirect call
     from there so the compiler can add the retpoline protection,

   - Make the vmexit_fill_RSB() assembly less stupid

   - Fix a typo in the PTI documentation"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/retpoline: Optimize inline assembler for vmexit_fill_RSB
  x86/pti: Document fix wrong index
  kprobes/x86: Disable optimizing on the function jumps to indirect thunk
  kprobes/x86: Blacklist indirect thunk functions for kprobes
  retpoline: Introduce start/end markers of indirect thunk
  x86/mce: Make machine check speculation protected

2 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 21 Jan 2018 18:41:48 +0000 (10:41 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 kexec fix from Thomas Gleixner:
 "A single fix for the WBINVD issue introduced by the SME support which
  causes kexec fails on non AMD/SME capable CPUs. Issue WBINVD only when
  the CPU has SME and avoid doing so in a loop"

[ Side note: this patch fixes the problem, but it isn't entirely clear
  why it is required. The wbinvd should just work regardless, but there
  seems to be some system - as opposed to CPU - issue, since the wbinvd
  causes more problems later in the shutdown sequence, but wbinvd
  instructions while the system is still active are not problematic.

  Possibly some SMI or pending machine check issue on the affected system ]

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Rework wbinvd, hlt operation in stop_this_cpu()

2 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 21 Jan 2018 18:39:58 +0000 (10:39 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fix from Thomas Gleixner:
 "A single fix for the new matrix allocator to prevent vector exhaustion
  by certain network drivers which allocate gazillions of unused vectors
  which cannot be put into reservation mode due to MSI and the lack of
  MSI entry masking.

  The fix/workaround is to spread the vectors across CPUs by searching
  the supplied target CPU mask for the CPU with the smallest number of
  allocated vectors"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irq/matrix: Spread interrupts on allocation

2 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88...
Linus Torvalds [Sun, 21 Jan 2018 04:12:47 +0000 (20:12 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mattst88/alpha

Pull alpha fixes from Matt Turner:
 "A build fix and a regression fix"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha:
  alpha/PCI: Fix noname IRQ level detection
  alpha: extend memset16 to EV6 optimised routines

2 years agox86: Use __nostackprotect for sme_encrypt_kernel
Laura Abbott [Sun, 21 Jan 2018 01:14:02 +0000 (17:14 -0800)]
x86: Use __nostackprotect for sme_encrypt_kernel

Commit bacf6b499e11 ("x86/mm: Use a struct to reduce parameters for SME
PGD mapping") moved some parameters into a structure.

The structure was large enough to trigger the stack protection canary in
sme_encrypt_kernel which doesn't work this early, causing reboots.

Mark sme_encrypt_kernel appropriately to not use the canary.

Fixes: bacf6b499e11 ("x86/mm: Use a struct to reduce parameters for SME PGD mapping")
Signed-off-by: Laura Abbott <labbott@redhat.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoalpha/PCI: Fix noname IRQ level detection
Lorenzo Pieralisi [Tue, 16 Jan 2018 11:52:59 +0000 (11:52 +0000)]
alpha/PCI: Fix noname IRQ level detection

The conversion of the alpha architecture PCI host bridge legacy IRQ
mapping/swizzling to the new PCI host bridge map/swizzle hooks carried
out through:

commit 0e4c2eeb758a ("alpha/PCI: Replace pci_fixup_irqs() call with
host bridge IRQ mapping hooks")

implies that IRQ for devices are now allocated through pci_assign_irq()
function in pci_device_probe() that is called when a driver matching a
device is found in order to probe the device through the device driver.

Alpha noname platforms required IRQ level programming to be executed
in sio_fixup_irq_levels(), that is called in noname_init_pci(), a
platform hook called within a subsys_initcall.

In noname_init_pci(), present IRQs are detected through
sio_collect_irq_levels() that check the struct pci_dev->irq number
to detect if an IRQ has been allocated for the device.

By the time sio_collect_irq_levels() is called, some devices may still
have not a matching driver loaded to match them (eg loadable module)
therefore their IRQ allocation is still pending - which means that
sio_collect_irq_levels() does not programme the correct IRQ level for
those devices, causing their IRQ handling to be broken when the device
driver is actually loaded and the device is probed.

Fix the issue by adding code in the noname map_irq() function
(noname_map_irq()) that, whilst mapping/swizzling the IRQ line, it also
ensures that the correct IRQ level programming is executed at platform
level, fixing the issue.

Fixes: 0e4c2eeb758a ("alpha/PCI: Replace pci_fixup_irqs() call with
host bridge IRQ mapping hooks")
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org # 4.14
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Meelis Roos <mroos@linux.ee>
Signed-off-by: Matt Turner <mattst88@gmail.com>
2 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 20 Jan 2018 19:41:09 +0000 (11:41 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "ARM:
   - fix incorrect huge page mappings on systems using the contiguous
     hint for hugetlbfs
   - support alternative GICv4 init sequence
   - correctly implement the ARM SMCC for HVC and SMC handling

  PPC:
   - add KVM IOCTL for reporting vulnerability and workaround status

  s390:
   - provide userspace interface for branch prediction changes in
     firmware

  x86:
   - use correct macros for bits"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: s390: wire up bpb feature
  KVM: PPC: Book3S: Provide information about hardware/firmware CVE workarounds
  KVM/x86: Fix wrong macro references of X86_CR0_PG_BIT and X86_CR4_PAE_BIT in kvm_valid_sregs()
  arm64: KVM: Fix SMCCC handling of unimplemented SMC/HVC calls
  KVM: arm64: Fix GICv4 init when called from vgic_its_create
  KVM: arm/arm64: Check pagesize when allocating a hugepage at Stage 2

2 years agoMerge tag 'mips_fixes_4.15_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan...
Linus Torvalds [Sat, 20 Jan 2018 19:37:00 +0000 (11:37 -0800)]
Merge tag 'mips_fixes_4.15_2' of git://git./linux/kernel/git/jhogan/mips

Pull MIPS fixes from James Hogan:
 "Some final MIPS fixes for 4.15, including important build fixes and a
  MAINTAINERS update:

   - Add myself as MIPS co-maintainer.

   - Fix various all*config build failures (particularly as a result of
     switching the default MIPS platform to the "generic" platform).

   - Fix GCC7 build failures (duplicate const and questionable calls to
     missing __multi3 intrinsic on mips64r6).

   - Fix warnings when CPU Idle is enabled (4.14).

   - Fix AR7 serial output (since 3.17).

   - Fix ralink platform_get_irq error checking (since 3.12)"

* tag 'mips_fixes_4.15_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips:
  MAINTAINERS: Add James as MIPS co-maintainer
  MIPS: Fix undefined reference to physical_memsize
  MIPS: Implement __multi3 for GCC7 MIPS64r6 builds
  MIPS: mm: Fix duplicate "const" on insn_table_MM
  MIPS: CM: Drop WARN_ON(vp != 0)
  MIPS: ralink: Fix platform_get_irq's error checking
  MIPS: Fix CPS SMP NS16550 UART defaults
  MIPS: BCM47XX Avoid compile error with MIPS allnoconfig
  MIPS: RB532: Avoid undefined mac_pton without GENERIC_NET_UTILS
  MIPS: RB532: Avoid undefined early_serial_setup() without SERIAL_8250_CONSOLE
  MIPS: ath25: Avoid undefined early_serial_setup() without SERIAL_8250_CONSOLE
  MIPS: AR7: ensure the port type's FCR value is used

2 years agoKVM: s390: wire up bpb feature
Christian Borntraeger [Wed, 17 Jan 2018 13:44:34 +0000 (14:44 +0100)]
KVM: s390: wire up bpb feature

The new firmware interfaces for branch prediction behaviour changes
are transparently available for the guest. Nevertheless, there is
new state attached that should be migrated and properly resetted.
Provide a mechanism for handling reset, migration and VSIE.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[Changed capability number to 152. - Radim]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2 years agoMerge tag 'kvm-ppc-cve-4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/paulu...
Radim Krčmář [Sat, 20 Jan 2018 16:29:00 +0000 (17:29 +0100)]
Merge tag 'kvm-ppc-cve-4.15-2' of git://git./linux/kernel/git/paulus/powerpc

Add PPC KVM ioctl to report vulnerability and workaround status to userspace.

2 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 19 Jan 2018 23:20:00 +0000 (15:20 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "One fix for SAS attached SATA CD-ROMs. It turns out that the libata
  handling of CD devices relies on the SCSI error handler, so disable
  async aborts (which don't start the error handler) for these devices"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: libsas: Disable asynchronous aborts for SATA devices

2 years agoMerge tag 'for-4.15/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 19 Jan 2018 23:16:49 +0000 (15:16 -0800)]
Merge tag 'for-4.15/dm-fixes-2' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:
 "All fixes marked for stable:

   - Fix DM thinp btree corruption seen when inserting a new key/value
     pair into a full root node.

   - Fix DM thinp btree removal deadlock due to artificially low number
     of allowed concurrent locks allowed.

   - Fix possible DM crypt corruption if kernel keyring service is used.
     Only affects ciphers using following IVs: essiv, lmk and tcw.

   - Two DM crypt device initialization error checking fixes.

   - Fix DM integrity to allow use of async ciphers that require DMA"

* tag 'for-4.15/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm crypt: fix error return code in crypt_ctr()
  dm crypt: wipe kernel key copy after IV initialization
  dm integrity: don't store cipher request on the stack
  dm crypt: fix crash by adding missing check for auth key size
  dm btree: fix serious bug in btree_split_beneath()
  dm thin metadata: THIN_MAX_CONCURRENT_LOCKS should be 6

2 years agoMerge tag 'trace-v4.15-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rosted...
Linus Torvalds [Fri, 19 Jan 2018 19:38:19 +0000 (11:38 -0800)]
Merge tag 'trace-v4.15-rc4-3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Two more small fixes

   - The conversion of enums into their actual numbers to display in the
     event format file had an off-by-one bug, that could cause an enum
     not to be converted, and break user space parsing tools.

   - A fix to a previous fix to bring back the context recursion checks.
     The interrupt case checks for NMI, IRQ and softirq, but the softirq
     returned the same number regardless if it was set or not, although
     the logic would force it to be set if it were hit"

* tag 'trace-v4.15-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix converting enum's from the map in trace_event_eval_update()
  ring-buffer: Fix duplicate results in mapping context to bits in recursive lock

2 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 19 Jan 2018 19:36:09 +0000 (11:36 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:

 - a fix for use-after-free in Synaptics RMI4 driver

 - correction to multitouch contact tracking on certain ALPS touchpads
   (which got broken when we tried to fix the 2-finger scrolling)

 - touchpad on Lenovo T640p is switched over to SMbus/RMI

 - a few device node refcount fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: synaptics-rmi4 - prevent UAF reported by KASAN
  Input: ALPS - fix multi-touch decoding on SS4 plus touchpads
  Input: synaptics - Lenovo Thinkpad T460p devices should use RMI
  Input: of_touchscreen - add MODULE_LICENSE
  Input: 88pm860x-ts - fix child-node lookup
  Input: twl6040-vibra - fix child-node lookup
  Input: twl4030-vibra - fix sibling-node lookup

2 years agoMerge branch 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 19 Jan 2018 19:30:06 +0000 (11:30 -0800)]
Merge branch 'i2c/for-current-fixed' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Two bugfixes for the I2C core: Lixing Wang fixed a refcounting problem
  with DT nodes. Jeremy Compostella fixed a buffer overflow possibility
  when using a 'don't use' ioctl interface directly"

* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: core-smbus: prevent stack corruption on read I2C_BLOCK_DATA
  i2c: core: decrease reference count of device node in i2c_unregister_device

2 years agoMerge branch 'for-4.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Fri, 19 Jan 2018 19:26:59 +0000 (11:26 -0800)]
Merge branch 'for-4.15-fixes' of git://git./linux/kernel/git/tj/libata

Pull libata fixlet from Tejun Heo:
 "This just adds one more entry for liteon optical drives to the device
  blacklist for large IOs.

  The change is very low risk"

* 'for-4.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata: apply MAX_SEC_1024 to all LITEON EP1 series devices

2 years agoMerge branch 'for-4.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Fri, 19 Jan 2018 19:25:17 +0000 (11:25 -0800)]
Merge branch 'for-4.15-fixes' of git://git./linux/kernel/git/tj/cgroup

Pull cgroup fix from Tejun Heo:
 "cgroup.threads should be delegatable (ie. a container should be able
  to write to it from inside) but was missing the flag.

  The change is very low risk"

* 'for-4.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: make cgroup.threads delegatable

2 years agoMerge branch 'for-4.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Linus Torvalds [Fri, 19 Jan 2018 19:23:39 +0000 (11:23 -0800)]
Merge branch 'for-4.15-fixes' of git://git./linux/kernel/git/tj/wq

Pull workqueue fixlet from Tejun Heo:
 "One patch to add touch_nmi_watchdog() while dumping workqueue debug
  messages to avoid triggering the lockup detector spuriously.

  The change is very low risk"

* 'for-4.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: avoid hard lockups in show_workqueue_state()

2 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Fri, 19 Jan 2018 19:21:31 +0000 (11:21 -0800)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "We have various small DT fixes, and one important regression fix:

  The recent device tree bugfixes that were intended to address issues
  that 'dtc' started warning about in 4.15 fixed various USB PHY device
  nodes, but it turns out that we had code that depended on those nodes
  being incorrect and the probe failing with a particular error code.
  With the workaround we can also deal with correct device nodes.

  The DT fixes include:

   - Allwinner A10 and A20 had the display pipeline set up incorrectly
     (introduced in v4.15)

   - The Altera PMU lacked an interrupt-parent (never worked)

   - Pin muxing on the Openblocks A7 (never worked)

   - Clocks might get set up wrong on Armada 7K/8K (4.15 regression)

  We now have additional device tree patches to address all the
  remaining warnings introduced in 4.15, but decided to queue them for
  4.16 instead, to avoid risking another regression like the USB PHY
  thing mentioned above.

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  phy: work around 'phys' references to usb-nop-xceiv devices
  ARM: sunxi_defconfig: Enable CMA
  arm64: dts: socfpga: add missing interrupt-parent
  ARM: dts: sun[47]i: Fix display backend 1 output to TCON0 remote endpoint
  ARM64: dts: marvell: armada-cp110: Fix clock resources for various node
  ARM: dts: da850-lcdk: Remove leading 0x and 0s from unit address
  ARM: dts: kirkwood: fix pin-muxing of MPP7 on OpenBlocks A7

2 years agoMerge tag 'powerpc-4.15-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 19 Jan 2018 19:19:11 +0000 (11:19 -0800)]
Merge tag 'powerpc-4.15-8' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "More than we'd like after rc8, but nothing very alarming either, just
  tying up loose ends before the release:

  Since we changed powernv to use cpufreq_get() from show_cpuinfo(), we
  see warnings with PREEMPT enabled. But the preempt_disable() in
  show_cpuinfo() doesn't actually prevent CPU hotplug as it suggests, so
  remove it.

  Two updates to the recently merged RFI flush code. Wire up the generic
  sysfs file to report the status, and add a debugfs file to allow
  enabling/disabling it at runtime.

  Two updates to xmon, one to add the RFI flush related fields to the
  paca dump, and another to not use hashed pointers in the paca dump.

  And one minor fix to add a missing include of linux/types.h in
  asm/hvcall.h, not seen to break the build in upstream, but correct
  anyway.

  Thanks to: Benjamin Herrenschmidt, Michal Suchanek, Nicholas Piggin"

* tag 'powerpc-4.15-8' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pseries: include linux/types.h in asm/hvcall.h
  powerpc/64s: Allow control of RFI flush via debugfs
  powerpc/64s: Wire up cpu_show_meltdown()
  powerpc: Don't preempt_disable() in show_cpuinfo()
  powerpc/xmon: Don't print hashed pointers in paca dump
  powerpc/xmon: Add RFI flush related fields to paca dump

2 years agoMerge tag 'drm-fixes-for-v4.15-rc9' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 19 Jan 2018 19:16:01 +0000 (11:16 -0800)]
Merge tag 'drm-fixes-for-v4.15-rc9' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Nouveau, i915, vmwgfx and sun4i regression fixes.

  The i915 change fixes a display corruption problem introduced in 4.15,
  the nouveau changes are for regressions in 4.15, one of the vmwgfx
  fixes goes back a little further, the other is a 4.15 regression fix,
  the 3 sun4i changes fix blank HDMI output on those devices"

* tag 'drm-fixes-for-v4.15-rc9' of git://people.freedesktop.org/~airlied/linux:
  drm/nouveau/mmu/mcp77: fix regressions in stolen memory handling
  drm/nouveau/bar/gk20a: Avoid bar teardown during init
  drm/nouveau/drm/nouveau: Pass the proper arguments to nvif_object_map_handle()
  drm/vmwgfx: fix memory corruption with legacy/sou connectors
  drm/vmwgfx: Fix a boot time warning
  drm/i915: Fix deadlock in i830_disable_pipe()
  drm/i915: Redo plane sanitation during readout
  drm/i915: Add .get_hw_state() method for planes
  drm/sun4i: hdmi: Add missing rate halving check in sun4i_tmds_determine_rate
  drm/sun4i: hdmi: Fix incorrect assignment in sun4i_tmds_determine_rate
  drm/sun4i: hdmi: Check for unset best_parent in sun4i_tmds_determine_rate

2 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Fri, 19 Jan 2018 18:56:18 +0000 (10:56 -0800)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "6 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  sparse doesn't support struct randomization
  proc: fix coredump vs read /proc/*/stat race
  scripts/gdb/linux/tasks.py: fix get_thread_info
  scripts/decodecode: fix decoding for AArch64 (arm64) instructions
  mm/page_owner.c: remove drain_all_pages from init_early_allocated_pages
  mm/memory.c: release locked page in do_swap_page()

2 years agoia64: Rewrite atomic_add and atomic_sub
Matthew Wilcox [Thu, 18 Jan 2018 21:52:17 +0000 (13:52 -0800)]
ia64: Rewrite atomic_add and atomic_sub

Force __builtin_constant_p to evaluate whether the argument to atomic_add
& atomic_sub is constant in the front-end before optimisations which
can lead GCC to output a call to __bad_increment_for_ia64_fetch_and_add().

See GCC bugzilla 83653.

Signed-off-by: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agosparse doesn't support struct randomization
Matthew Wilcox [Fri, 19 Jan 2018 00:34:08 +0000 (16:34 -0800)]
sparse doesn't support struct randomization

Without this patch, I drown in a sea of unknown attribute warnings

Link: http://lkml.kernel.org/r/20180117024539.27354-1-willy@infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoproc: fix coredump vs read /proc/*/stat race
Alexey Dobriyan [Fri, 19 Jan 2018 00:34:05 +0000 (16:34 -0800)]
proc: fix coredump vs read /proc/*/stat race

do_task_stat() accesses IP and SP of a task without bumping reference
count of a stack (which became an entity with independent lifetime at
some point).

Steps to reproduce:

    #include <stdio.h>
    #include <sys/types.h>
    #include <sys/stat.h>
    #include <fcntl.h>
    #include <sys/time.h>
    #include <sys/resource.h>
    #include <unistd.h>
    #include <sys/wait.h>

    int main(void)
    {
     setrlimit(RLIMIT_CORE, &(struct rlimit){});

     while (1) {
     char buf[64];
     char buf2[4096];
     pid_t pid;
     int fd;

     pid = fork();
     if (pid == 0) {
     *(volatile int *)0 = 0;
     }

     snprintf(buf, sizeof(buf), "/proc/%u/stat", pid);
     fd = open(buf, O_RDONLY);
     read(fd, buf2, sizeof(buf2));
     close(fd);

     waitpid(pid, NULL, 0);
     }
     return 0;
    }

    BUG: unable to handle kernel paging request at 0000000000003fd8
    IP: do_task_stat+0x8b4/0xaf0
    PGD 800000003d73e067 P4D 800000003d73e067 PUD 3d558067 PMD 0
    Oops: 0000 [#1] PREEMPT SMP PTI
    CPU: 0 PID: 1417 Comm: a.out Not tainted 4.15.0-rc8-dirty #2
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1.fc27 04/01/2014
    RIP: 0010:do_task_stat+0x8b4/0xaf0
    Call Trace:
     proc_single_show+0x43/0x70
     seq_read+0xe6/0x3b0
     __vfs_read+0x1e/0x120
     vfs_read+0x84/0x110
     SyS_read+0x3d/0xa0
     entry_SYSCALL_64_fastpath+0x13/0x6c
    RIP: 0033:0x7f4d7928cba0
    RSP: 002b:00007ffddb245158 EFLAGS: 00000246
    Code: 03 b7 a0 01 00 00 4c 8b 4c 24 70 4c 8b 44 24 78 4c 89 74 24 18 e9 91 f9 ff ff f6 45 4d 02 0f 84 fd f7 ff ff 48 8b 45 40 48 89 ef <48> 8b 80 d8 3f 00 00 48 89 44 24 20 e8 9b 97 eb ff 48 89 44 24
    RIP: do_task_stat+0x8b4/0xaf0 RSP: ffffc90000607cc8
    CR2: 0000000000003fd8

John Ogness said: for my tests I added an else case to verify that the
race is hit and correctly mitigated.

Link: http://lkml.kernel.org/r/20180116175054.GA11513@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reported-by: "Kohli, Gaurav" <gkohli@codeaurora.org>
Tested-by: John Ogness <john.ogness@linutronix.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoscripts/gdb/linux/tasks.py: fix get_thread_info
Xi Kangjie [Fri, 19 Jan 2018 00:34:00 +0000 (16:34 -0800)]
scripts/gdb/linux/tasks.py: fix get_thread_info

Since kernel 4.9, the thread_info has been moved into task_struct, no
longer locates at the bottom of kernel stack.

See commits c65eacbe290b ("sched/core: Allow putting thread_info into
task_struct") and 15f4eae70d36 ("x86: Move thread_info into
task_struct").

Before fix:
  (gdb) set $current = $lx_current()
  (gdb) p $lx_thread_info($current)
  $1 = {flags = 1470918301}
  (gdb) p $current.thread_info
  $2 = {flags = 2147483648}

After fix:
  (gdb) p $lx_thread_info($current)
  $1 = {flags = 2147483648}
  (gdb) p $current.thread_info
  $2 = {flags = 2147483648}

Link: http://lkml.kernel.org/r/20180118210159.17223-1-imxikangjie@gmail.com
Fixes: 15f4eae70d36 ("x86: Move thread_info into task_struct")
Signed-off-by: Xi Kangjie <imxikangjie@gmail.com>
Acked-by: Jan Kiszka <jan.kiszka@siemens.com>
Acked-by: Kieran Bingham <kbingham@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoscripts/decodecode: fix decoding for AArch64 (arm64) instructions
Will Deacon [Fri, 19 Jan 2018 00:33:57 +0000 (16:33 -0800)]
scripts/decodecode: fix decoding for AArch64 (arm64) instructions

There are a couple of problems with the decodecode script and arm64:

1. AArch64 objdump refuses to disassemble .4byte directives as instructions,
   insisting that they are data values and displaying them as:

a94153f3 .word 0xa94153f3 <-- trapping instruction

   This is resolved by using the .inst directive instead.

2. Disassembly of branch instructions attempts to provide the target as
   an offset from a symbol, e.g.:

   0: 34000082 cbz w2, 10 <.text+0x10>

  however this falls foul of the grep -v, which matches lines containing
  ".text" and ends up removing all branch instructions from the dump.

This patch resolves both issues by using the .inst directive for 4-byte
quantities on arm64 and stripping the resulting binaries (as is done on
arm already) to remove the mapping symbols.

Link: http://lkml.kernel.org/r/1506596147-23630-1-git-send-email-will.deacon@arm.com
Signed-off-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomm/page_owner.c: remove drain_all_pages from init_early_allocated_pages
Oscar Salvador [Fri, 19 Jan 2018 00:33:53 +0000 (16:33 -0800)]
mm/page_owner.c: remove drain_all_pages from init_early_allocated_pages

When setting page_owner = on, the following warning can be seen in the
boot log:

  WARNING: CPU: 0 PID: 0 at mm/page_alloc.c:2537 drain_all_pages+0x171/0x1a0
  Modules linked in:
  CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc7-next-20180109-1-default+ #7
  Hardware name: Dell Inc. Latitude E7470/0T6HHJ, BIOS 1.11.3 11/09/2016
  RIP: 0010:drain_all_pages+0x171/0x1a0
  Call Trace:
    init_page_owner+0x4e/0x260
    start_kernel+0x3e6/0x4a6
    ? set_init_arg+0x55/0x55
    secondary_startup_64+0xa5/0xb0
  Code: c5 ed ff 89 df 48 c7 c6 20 3b 71 82 e8 f9 4b 52 00 3b 05 d7 0b f8 00 89 c3 72 d5 5b 5d 41 5

This warning is shown because we are calling drain_all_pages() in
init_early_allocated_pages(), but mm_percpu_wq is not up yet, it is being
set up later on in kernel_init_freeable() -> init_mm_internals().

Link: http://lkml.kernel.org/r/20180109153921.GA13070@techadventures.net
Signed-off-by: Oscar Salvador <osalvador@techadventures.net>
Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Ayush Mittal <ayush.m@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomm/memory.c: release locked page in do_swap_page()
Minchan Kim [Fri, 19 Jan 2018 00:33:50 +0000 (16:33 -0800)]
mm/memory.c: release locked page in do_swap_page()

James reported a bug in swap paging-in from his testing.  It is that
do_swap_page doesn't release locked page so system hang-up happens due
to a deadlock on PG_locked.

It was introduced by 0bcac06f27d7 ("mm, swap: skip swapcache for swapin
of synchronous device") because I missed swap cache hit places to update
swapcache variable to work well with other logics against swapcache in
do_swap_page.

This patch fixes it.

Debugged by James Bottomley.

Link: http://lkml.kernel.org/r/<1514407817.4169.4.camel@HansenPartnership.com>
Link: http://lkml.kernel.org/r/20180102235606.GA19438@bbox
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reported-by: James Bottomley <James.Bottomley@hansenpartnership.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 19 Jan 2018 17:30:33 +0000 (09:30 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix BPF divides by zero, from Eric Dumazet and Alexei Starovoitov.

 2) Reject stores into bpf context via st and xadd, from Daniel
    Borkmann.

 3) Fix a memory leak in TUN, from Cong Wang.

 4) Disable RX aggregation on a specific troublesome configuration of
    r8152 in a Dell TB16b dock.

 5) Fix sw_ctx leak in tls, from Sabrina Dubroca.

 6) Fix program replacement in cls_bpf, from Daniel Borkmann.

 7) Fix uninitialized station_info structures in cfg80211, from Johannes
    Berg.

 8) Fix miscalculation of transport header offset field in flow
    dissector, from Eric Dumazet.

 9) Fix LPM tree leak on failure in mlxsw driver, from Ido Schimmel.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (29 commits)
  ibmvnic: Fix IPv6 packet descriptors
  ibmvnic: Fix IP offload control buffer
  ipv6: don't let tb6_root node share routes with other node
  ip6_gre: init dev->mtu and dev->hard_header_len correctly
  mlxsw: spectrum_router: Free LPM tree upon failure
  flow_dissector: properly cap thoff field
  fm10k: mark PM functions as __maybe_unused
  cfg80211: fix station info handling bugs
  netlink: reset extack earlier in netlink_rcv_skb
  can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once
  can: af_can: can_rcv(): replace WARN_ONCE by pr_warn_once
  bpf: mark dst unknown on inconsistent {s, u}bounds adjustments
  bpf: fix cls_bpf on filter replace
  Net: ethernet: ti: netcp: Fix inbound ping crash if MTU size is greater than 1500
  tls: reset crypto_info when do_tls_setsockopt_tx fails
  tls: return -EBUSY if crypto_info is already set
  tls: fix sw_ctx leak
  net/tls: Only attach to sockets in ESTABLISHED state
  net: fs_enet: do not call phy_stop() in interrupts
  r8152: disable RX aggregation on Dell TB16 dock
  ...

2 years agox86/retpoline: Optimize inline assembler for vmexit_fill_RSB
Andi Kleen [Wed, 17 Jan 2018 22:53:28 +0000 (14:53 -0800)]
x86/retpoline: Optimize inline assembler for vmexit_fill_RSB

The generated assembler for the C fill RSB inline asm operations has
several issues:

- The C code sets up the loop register, which is then immediately
  overwritten in __FILL_RETURN_BUFFER with the same value again.

- The C code also passes in the iteration count in another register, which
  is not used at all.

Remove these two unnecessary operations. Just rely on the single constant
passed to the macro for the iterations.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: dave.hansen@intel.com
Cc: gregkh@linuxfoundation.org
Cc: torvalds@linux-foundation.org
Cc: arjan@linux.intel.com
Link: https://lkml.kernel.org/r/20180117225328.15414-1-andi@firstfloor.org
2 years agox86/pti: Document fix wrong index
zhenwei.pi [Thu, 18 Jan 2018 01:04:52 +0000 (09:04 +0800)]
x86/pti: Document fix wrong index

In section <2. Runtime Cost>, fix wrong index.

Signed-off-by: zhenwei.pi <zhenwei.pi@youruncloud.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: dave.hansen@linux.intel.com
Link: https://lkml.kernel.org/r/1516237492-27739-1-git-send-email-zhenwei.pi@youruncloud.com
2 years agokprobes/x86: Disable optimizing on the function jumps to indirect thunk
Masami Hiramatsu [Thu, 18 Jan 2018 16:15:20 +0000 (01:15 +0900)]
kprobes/x86: Disable optimizing on the function jumps to indirect thunk

Since indirect jump instructions will be replaced by jump
to __x86_indirect_thunk_*, those jmp instruction must be
treated as an indirect jump. Since optprobe prohibits to
optimize probes in the function which uses an indirect jump,
it also needs to find out the function which jump to
__x86_indirect_thunk_* and disable optimization.

Add a check that the jump target address is between the
__indirect_thunk_start/end when optimizing kprobe.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/151629212062.10241.6991266100233002273.stgit@devbox
2 years agokprobes/x86: Blacklist indirect thunk functions for kprobes
Masami Hiramatsu [Thu, 18 Jan 2018 16:14:51 +0000 (01:14 +0900)]
kprobes/x86: Blacklist indirect thunk functions for kprobes

Mark __x86_indirect_thunk_* functions as blacklist for kprobes
because those functions can be called from anywhere in the kernel
including blacklist functions of kprobes.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/151629209111.10241.5444852823378068683.stgit@devbox
2 years agoretpoline: Introduce start/end markers of indirect thunk
Masami Hiramatsu [Thu, 18 Jan 2018 16:14:21 +0000 (01:14 +0900)]
retpoline: Introduce start/end markers of indirect thunk

Introduce start/end markers of __x86_indirect_thunk_* functions.
To make it easy, consolidate .text.__x86.indirect_thunk.* sections
to one .text.__x86.indirect_thunk section and put it in the
end of kernel text section and adds __indirect_thunk_start/end
so that other subsystem (e.g. kprobes) can identify it.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/151629206178.10241.6828804696410044771.stgit@devbox
2 years agox86/mce: Make machine check speculation protected
Thomas Gleixner [Thu, 18 Jan 2018 15:28:26 +0000 (16:28 +0100)]
x86/mce: Make machine check speculation protected

The machine check idtentry uses an indirect branch directly from the low
level code. This evades the speculation protection.

Replace it by a direct call into C code and issue the indirect call there
so the compiler can apply the proper speculation protection.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by:Borislav Petkov <bp@alien8.de>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Niced-by: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801181626290.1847@nanos
2 years agophy: work around 'phys' references to usb-nop-xceiv devices
Arnd Bergmann [Fri, 12 Jan 2018 10:12:05 +0000 (11:12 +0100)]
phy: work around 'phys' references to usb-nop-xceiv devices

Stefan Wahren reports a problem with a warning fix that was merged
for v4.15: we had lots of device nodes with a 'phys' property pointing
to a device node that is not compliant with the binding documented in
Documentation/devicetree/bindings/phy/phy-bindings.txt

This generally works because USB HCD drivers that support both the generic
phy subsystem and the older usb-phy subsystem ignore most errors from
phy_get() and related calls and then use the usb-phy driver instead.

However, it turns out that making the usb-nop-xceiv device compatible with
the generic-phy binding changes the phy_get() return code from -EINVAL to
-EPROBE_DEFER, and the dwc2 usb controller driver for bcm2835 now returns
-EPROBE_DEFER from its probe function rather than ignoring the failure,
breaking all USB support on raspberry-pi when CONFIG_GENERIC_PHY is
enabled. The same code is used in the dwc3 driver and the usb_add_hcd()
function, so a reasonable assumption would be that many other platforms
are affected as well.

I have reviewed all the related patches and concluded that "usb-nop-xceiv"
is the only USB phy that is affected by the change, and since it is by far
the most commonly referenced phy, all the other USB phy drivers appear
to be used in ways that are are either safe in DT (they don't use the
'phys' property), or in the driver (they already ignore -EPROBE_DEFER
from generic-phy when usb-phy is available).

To work around the problem, this adds a special case to _of_phy_get()
so we ignore any PHY node that is compatible with "usb-nop-xceiv",
as we know that this can never load no matter how much we defer. In the
future, we might implement a generic-phy driver for "usb-nop-xceiv"
and then remove this workaround.

Since we generally want older kernels to also want to work with the
fixed devicetree files, it would be good to backport the patch into
stable kernels as well (3.13+ are possibly affected), even though they
don't contain any of the patches that may have caused regressions.

Fixes: 014d6da6cb25 ARM: dts: bcm283x: Fix DTC warnings about missing phy-cells
Fixes: c5bbf358b790 arm: dts: nspire: Add missing #phy-cells to usb-nop-xceiv
Fixes: 44e5dced2ef6 arm: dts: marvell: Add missing #phy-cells to usb-nop-xceiv
Fixes: f568f6f554b8 ARM: dts: omap: Add missing #phy-cells to usb-nop-xceiv
Fixes: d745d5f277bf ARM: dts: imx51-zii-rdu1: Add missing #phy-cells to usb-nop-xceiv
Fixes: 915fbe59cbf2 ARM: dts: imx: Add missing #phy-cells to usb-nop-xceiv
Link: https://marc.info/?l=linux-usb&m=151518314314753&w=2
Link: https://patchwork.kernel.org/patch/10158145/
Cc: stable@vger.kernel.org
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Eric Anholt <eric@anholt.net>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoARM: sunxi_defconfig: Enable CMA
Maxime Ripard [Fri, 19 Jan 2018 13:32:08 +0000 (14:32 +0100)]
ARM: sunxi_defconfig: Enable CMA

The DRM driver most notably, but also out of tree drivers (for now) like
the VPU or GPU drivers, are quite big consumers of large, contiguous memory
buffers. However, the sunxi_defconfig doesn't enable CMA in order to
mitigate that, which makes them almost unusable.

Enable it to make sure it somewhat works.

Cc: <stable@vger.kernel.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2 years agoKVM: PPC: Book3S: Provide information about hardware/firmware CVE workarounds
Paul Mackerras [Mon, 15 Jan 2018 05:06:47 +0000 (16:06 +1100)]
KVM: PPC: Book3S: Provide information about hardware/firmware CVE workarounds

This adds a new ioctl, KVM_PPC_GET_CPU_CHAR, that gives userspace
information about the underlying machine's level of vulnerability
to the recently announced vulnerabilities CVE-2017-5715,
CVE-2017-5753 and CVE-2017-5754, and whether the machine provides
instructions to assist software to work around the vulnerabilities.

The ioctl returns two u64 words describing characteristics of the
CPU and required software behaviour respectively, plus two mask
words which indicate which bits have been filled in by the kernel,
for extensibility.  The bit definitions are the same as for the
new H_GET_CPU_CHARACTERISTICS hypercall.

There is also a new capability, KVM_CAP_PPC_GET_CPU_CHAR, which
indicates whether the new ioctl is available.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2 years agoMerge tag 'drm-intel-fixes-2018-01-18' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Fri, 19 Jan 2018 02:40:07 +0000 (12:40 +1000)]
Merge tag 'drm-intel-fixes-2018-01-18' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

Display corruption regression bugfix with both a prep patch and a
follow-up fix

* tag 'drm-intel-fixes-2018-01-18' of git://anongit.freedesktop.org/drm/drm-intel:
  drm/i915: Fix deadlock in i830_disable_pipe()
  drm/i915: Redo plane sanitation during readout
  drm/i915: Add .get_hw_state() method for planes

2 years agoibmvnic: Fix IPv6 packet descriptors
Thomas Falcon [Fri, 19 Jan 2018 01:29:48 +0000 (19:29 -0600)]
ibmvnic: Fix IPv6 packet descriptors

Packet descriptor generation for IPv6 is broken.
Properly set L3 and L4 protocol flags for IPv6 descriptors.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoibmvnic: Fix IP offload control buffer
Thomas Falcon [Fri, 19 Jan 2018 01:05:01 +0000 (19:05 -0600)]
ibmvnic: Fix IP offload control buffer

Set some missing fields in the IP control offload buffer. This buffer is
used to enable checksum and TCP segmentation offload in the VNIC server.
The buffer length field and the checksum offloading bits were not set
properly, so fix that here.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge tag 'linux-can-fixes-for-4.15-20180118' of ssh://gitolite.kernel.org/pub/scm...
David S. Miller [Fri, 19 Jan 2018 02:16:13 +0000 (21:16 -0500)]
Merge tag 'linux-can-fixes-for-4.15-20180118' of ssh://gitolite./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2018-01-18

====================
this is a pull reqeust of two patches for net/master:

The syzkaller project triggered two WARN_ONCE() in the af_can code from
userspace and we decided to replace it by a pr_warn_once().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoipv6: don't let tb6_root node share routes with other node
Wei Wang [Thu, 18 Jan 2018 18:40:03 +0000 (10:40 -0800)]
ipv6: don't let tb6_root node share routes with other node

After commit 4512c43eac7e, if we add a route to the subtree of tb6_root
which does not have any route attached to it yet, the current code will
let tb6_root and the node in the subtree share the same route.
This could cause problem cause tb6_root has RTN_INFO flag marked and the
tree repair and clean up code will not work properly.
This commit makes sure tb6_root->leaf points back to null_entry instead
of sharing route with other node.

It fixes the following syzkaller reported issue:
BUG: KASAN: use-after-free in ipv6_prefix_equal include/net/ipv6.h:540 [inline]
BUG: KASAN: use-after-free in fib6_add_1+0x165f/0x1790 net/ipv6/ip6_fib.c:618
Read of size 8 at addr ffff8801bc043498 by task syz-executor5/19819

CPU: 1 PID: 19819 Comm: syz-executor5 Not tainted 4.15.0-rc7+ #186
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 print_address_description+0x73/0x250 mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report+0x25b/0x340 mm/kasan/report.c:409
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430
 ipv6_prefix_equal include/net/ipv6.h:540 [inline]
 fib6_add_1+0x165f/0x1790 net/ipv6/ip6_fib.c:618
 fib6_add+0x5fa/0x1540 net/ipv6/ip6_fib.c:1214
 __ip6_ins_rt+0x6c/0x90 net/ipv6/route.c:1003
 ip6_route_add+0x141/0x190 net/ipv6/route.c:2790
 ipv6_route_ioctl+0x4db/0x6b0 net/ipv6/route.c:3299
 inet6_ioctl+0xef/0x1e0 net/ipv6/af_inet6.c:520
 sock_do_ioctl+0x65/0xb0 net/socket.c:958
 sock_ioctl+0x2c2/0x440 net/socket.c:1055
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x452ac9
RSP: 002b:00007fd42b321c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 0000000020fd7000 RSI: 000000000000890b RDI: 0000000000000013
RBP: 000000000000049e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4f70
R13: 00000000ffffffff R14: 00007fd42b3226d4 R15: 0000000000000000

Fixes: 4512c43eac7e ("ipv6: remove null_entry before adding default route")
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'linux-4.15' of git://github.com/skeggsb/linux into drm-fixes
Dave Airlie [Fri, 19 Jan 2018 02:12:31 +0000 (12:12 +1000)]
Merge branch 'linux-4.15' of git://github.com/skeggsb/linux into drm-fixes

Thought I'd try my luck getting one more in:
- Two fixes for Tegra (one is to common code, but our userspace doesn't hit it).
- One for NV5x-class MCPs

* 'linux-4.15' of git://github.com/skeggsb/linux:
  drm/nouveau/mmu/mcp77: fix regressions in stolen memory handling
  drm/nouveau/bar/gk20a: Avoid bar teardown during init
  drm/nouveau/drm/nouveau: Pass the proper arguments to nvif_object_map_handle()

2 years agoip6_gre: init dev->mtu and dev->hard_header_len correctly
Alexey Kodanev [Thu, 18 Jan 2018 17:51:12 +0000 (20:51 +0300)]
ip6_gre: init dev->mtu and dev->hard_header_len correctly

Commit b05229f44228 ("gre6: Cleanup GREv6 transmit path,
call common GRE functions") moved dev->mtu initialization
from ip6gre_tunnel_setup() to ip6gre_tunnel_init(), as a
result, the previously set values, before ndo_init(), are
reset in the following cases:

* rtnl_create_link() can update dev->mtu from IFLA_MTU
  parameter.

* ip6gre_tnl_link_config() is invoked before ndo_init() in
  netlink and ioctl setup, so ndo_init() can reset MTU
  adjustments with the lower device MTU as well, dev->mtu
  and dev->hard_header_len.

  Not applicable for ip6gretap because it has one more call
  to ip6gre_tnl_link_config(tunnel, 1) in ip6gre_tap_init().

Fix the first case by updating dev->mtu with 'tb[IFLA_MTU]'
parameter if a user sets it manually on a device creation,
and fix the second one by moving ip6gre_tnl_link_config()
call after register_netdevice().

Fixes: b05229f44228 ("gre6: Cleanup GREv6 transmit path, call common GRE functions")
Fixes: db2ec95d1ba4 ("ip6_gre: Fix MTU setting")
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agomlxsw: spectrum_router: Free LPM tree upon failure
Ido Schimmel [Thu, 18 Jan 2018 14:42:10 +0000 (15:42 +0100)]
mlxsw: spectrum_router: Free LPM tree upon failure

When a new LPM tree is created, we try to replace the trees in the
existing virtual routers with it. If we fail, the tree needs to be
freed.

Currently, this does not happen in the unlikely case where we fail to
bind the tree to the first virtual router, since its reference count
never transitions from 1 to 0.

Fix that by taking a reference before binding the tree.

Fixes: fc922bb0dd94 ("mlxsw: spectrum_router: Use one LPM tree for all virtual routers")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodrm/nouveau/mmu/mcp77: fix regressions in stolen memory handling
Ben Skeggs [Fri, 19 Jan 2018 00:34:56 +0000 (10:34 +1000)]
drm/nouveau/mmu/mcp77: fix regressions in stolen memory handling

- Fixes addition of stolen memory base address to PTEs.
- Removes support for compression.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Tested-by: Pierre Moreau <pierre.morrow@free.fr>
2 years agodrm/nouveau/bar/gk20a: Avoid bar teardown during init
Jon Hunter [Thu, 4 Jan 2018 11:29:09 +0000 (11:29 +0000)]
drm/nouveau/bar/gk20a: Avoid bar teardown during init

Commit bbb163e18960 ("drm/nouveau/bar: implement bar1 teardown")
introduced add a teardown helper function for BAR1. During
initialisation of the Nouveau, initially all the teardown helpers are
called once, before calling their init counterparts. For gk20a, after
the BAR1 teardown function is called, the device is hanging during the
initialisation of the FB sub-device. At this point it is unclear why
this is happening and this is still under investigation. However, this
change is preventing Tegra124 devices from booting when Nouveau is
enabled. To allow Tegra124 to boot, remove the teardown helper for
gk20a.

This is based upon a previous patch by Guillaume Tucker but limits
the workaround to only gk20a GPUs.

Fixes: bbb163e18960 ("drm/nouveau/bar: implement bar1 teardown")
Reported-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2 years agodrm/nouveau/drm/nouveau: Pass the proper arguments to nvif_object_map_handle()
Thierry Reding [Thu, 18 Jan 2018 21:24:12 +0000 (07:24 +1000)]
drm/nouveau/drm/nouveau: Pass the proper arguments to nvif_object_map_handle()

This is obviously wrong in the current code. Make sure to record the
correct size of the arguments and pass the actual arguments to the
nvif_object_map_handle() function.

Suggested-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2 years agoflow_dissector: properly cap thoff field
Eric Dumazet [Wed, 17 Jan 2018 22:21:13 +0000 (14:21 -0800)]
flow_dissector: properly cap thoff field

syzbot reported yet another crash [1] that is caused by
insufficient validation of DODGY packets.

Two bugs are happening here to trigger the crash.

1) Flow dissection leaves with incorrect thoff field.

2) skb_probe_transport_header() sets transport header to this invalid
thoff, even if pointing after skb valid data.

3) qdisc_pkt_len_init() reads out-of-bound data because it
trusts tcp_hdrlen(skb)

Possible fixes :

- Full flow dissector validation before injecting bad DODGY packets in
the stack.
 This approach was attempted here : https://patchwork.ozlabs.org/patch/
861874/

- Have more robust functions in the core.
  This might be needed anyway for stable versions.

This patch fixes the flow dissection issue.

[1]
CPU: 1 PID: 3144 Comm: syzkaller271204 Not tainted 4.15.0-rc4-mm1+ #49
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 print_address_description+0x73/0x250 mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:355 [inline]
 kasan_report+0x23b/0x360 mm/kasan/report.c:413
 __asan_report_load2_noabort+0x14/0x20 mm/kasan/report.c:432
 __tcp_hdrlen include/linux/tcp.h:35 [inline]
 tcp_hdrlen include/linux/tcp.h:40 [inline]
 qdisc_pkt_len_init net/core/dev.c:3160 [inline]
 __dev_queue_xmit+0x20d3/0x2200 net/core/dev.c:3465
 dev_queue_xmit+0x17/0x20 net/core/dev.c:3554
 packet_snd net/packet/af_packet.c:2943 [inline]
 packet_sendmsg+0x3ad5/0x60a0 net/packet/af_packet.c:2968
 sock_sendmsg_nosec net/socket.c:628 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:638
 sock_write_iter+0x31a/0x5d0 net/socket.c:907
 call_write_iter include/linux/fs.h:1776 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x684/0x970 fs/read_write.c:482
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 entry_SYSCALL_64_fastpath+0x1f/0x96

Fixes: 34fad54c2537 ("net: __skb_flow_dissect() must cap its return value")
Fixes: a6e544b0a88b ("flow_dissector: Jump to exit code in __skb_flow_dissect")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge tag 'wireless-drivers-for-davem-2018-01-17' of git://git.kernel.org/pub/scm...
David S. Miller [Thu, 18 Jan 2018 21:23:10 +0000 (16:23 -0500)]
Merge tag 'wireless-drivers-for-davem-2018-01-17' of git://git./linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for 4.15

One last set of fixes for regression submitted during the last few days.

bcma & ssb

* fix older build problems which (apparently) recently became more
  frequent in certain MIPS configurations

brcmfmac

* continue driver initialisation even if CLM blob (firmware) file is
  not found
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agotracing: Fix converting enum's from the map in trace_event_eval_update()
Steven Rostedt (VMware) [Thu, 18 Jan 2018 20:53:10 +0000 (15:53 -0500)]
tracing: Fix converting enum's from the map in trace_event_eval_update()

Since enums do not get converted by the TRACE_EVENT macro into their values,
the event format displaces the enum name and not the value. This breaks
tools like perf and trace-cmd that need to interpret the raw binary data. To
solve this, an enum map was created to convert these enums into their actual
numbers on boot up. This is done by TRACE_EVENTS() adding a
TRACE_DEFINE_ENUM() macro.

Some enums were not being converted. This was caused by an optization that
had a bug in it.

All calls get checked against this enum map to see if it should be converted
or not, and it compares the call's system to the system that the enum map
was created under. If they match, then they call is processed.

To cut down on the number of iterations needed to find the maps with a
matching system, since calls and maps are grouped by system, when a match is
made, the index into the map array is saved, so that the next call, if it
belongs to the same system as the previous call, could start right at that
array index and not have to scan all the previous arrays.

The problem was, the saved index was used as the variable to know if this is
a call in a new system or not. If the index was zero, it was assumed that
the call is in a new system and would keep incrementing the saved index
until it found a matching system. The issue arises when the first matching
system was at index zero. The next map, if it belonged to the same system,
would then think it was the first match and increment the index to one. If
the next call belong to the same system, it would begin its search of the
maps off by one, and miss the first enum that should be converted. This left
a single enum not converted properly.

Also add a comment to describe exactly what that index was for. It took me a
bit too long to figure out what I was thinking when debugging this issue.

Link: http://lkml.kernel.org/r/717BE572-2070-4C1E-9902-9F2E0FEDA4F8@oracle.com
Cc: stable@vger.kernel.org
Fixes: 0c564a538aa93 ("tracing: Add TRACE_DEFINE_ENUM() macro to map enums to their values")
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Teste-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2 years agofm10k: mark PM functions as __maybe_unused
Arnd Bergmann [Wed, 17 Jan 2018 15:57:32 +0000 (07:57 -0800)]
fm10k: mark PM functions as __maybe_unused

A cleanup of the PM code left an incorrect #ifdef in place, leading
to a harmless build warning:

drivers/net/ethernet/intel/fm10k/fm10k_pci.c:2502:12: error: 'fm10k_suspend' defined but not used [-Werror=unused-function]
drivers/net/ethernet/intel/fm10k/fm10k_pci.c:2475:12: error: 'fm10k_resume' defined but not used [-Werror=unused-function]

It's easier to use __maybe_unused attributes here, since you
can't pick the wrong one.

Fixes: 8249c47c6ba4 ("fm10k: use generic PM hooks instead of legacy PCIe power hooks")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoring-buffer: Fix duplicate results in mapping context to bits in recursive lock
Steven Rostedt (VMware) [Thu, 18 Jan 2018 20:42:09 +0000 (15:42 -0500)]
ring-buffer: Fix duplicate results in mapping context to bits in recursive lock

In bringing back the context checks, the code checks first if its normal
(non-interrupt) context, and then for NMI then IRQ then softirq. The final
check is redundant. Since the if branch is only hit if the context is one of
NMI, IRQ, or SOFTIRQ, if it's not NMI or IRQ there's no reason to check if
it is SOFTIRQ. The current code returns the same result even if its not a
SOFTIRQ. Which is confusing.

  pc & SOFTIRQ_OFFSET ? 2 : RB_CTX_SOFTIRQ

Is redundant as RB_CTX_SOFTIRQ *is* 2!

Fixes: a0e3a18f4baf ("ring-buffer: Bring back context level recursive checks")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2 years agoMAINTAINERS: Add James as MIPS co-maintainer
James Hogan [Fri, 10 Nov 2017 21:04:31 +0000 (21:04 +0000)]
MAINTAINERS: Add James as MIPS co-maintainer

I've been taking on some co-maintainer duties already, so lets make it
official in the MAINTAINERS file.

Link: https://lkml.kernel.org/r/33db77a2-32e4-6b2c-d463-9d116ba55623@imgtec.com
Link: https://lkml.kernel.org/r/20171207110549.GM27409@jhogan-linux.mipstec.com
Signed-off-by: James Hogan <jhogan@kernel.org>
Acked-by: Paul Burton <paul.burton@mips.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: David Daney <david.daney@cavium.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Matt Redfearn <matt.redfearn@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18211/

2 years agoMIPS: Fix undefined reference to physical_memsize
James Hogan [Mon, 15 Jan 2018 20:54:35 +0000 (20:54 +0000)]
MIPS: Fix undefined reference to physical_memsize

Since commit d41e6858ba58 ("MIPS: Kconfig: Set default MIPS system type
as generic") switched the default platform to the "generic" platform,
allmodconfig has been failing with the following linker error (among
other errors):

arch/mips/kernel/vpe-mt.o In function `vpe_run':
(.text+0x59c): undefined reference to `physical_memsize'

The Lantiq platform already worked around the same issue in commit
9050d50e2244 ("MIPS: lantiq: Set physical_memsize") by declaring
physical_memsize with the initial value of 0 (on the assumption that the
actual memory size will be hard-coded in the loaded VPE firmware), and
the Malta platform already provided physical_memsize.

Since all other platforms will fail to link with the VPE loader enabled,
only allow Lantiq and Malta platforms to enable it, by way of a
SYS_SUPPORTS_VPE_LOADER which is selected by those two platforms and
which MIPS_VPE_LOADER depends on. SYS_SUPPORTS_MULTITHREADING is now a
dependency of SYS_SUPPORTS_VPE_LOADER so that Kconfig emits a warning if
SYS_SUPPORTS_VPE_LOADER is selected without SYS_SUPPORTS_MULTITHREADING.

Fixes: d41e6858ba58 ("MIPS: Kconfig: Set default MIPS system type as generic")
Signed-off-by: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-mips@linux-mips.org
Tested-by: Guenter Roeck <linux@roeck-us.net>
Patchwork: https://patchwork.linux-mips.org/patch/18453/

2 years agocfg80211: fix station info handling bugs
Johannes Berg [Tue, 16 Jan 2018 22:20:22 +0000 (23:20 +0100)]
cfg80211: fix station info handling bugs

Fix two places where the structure isn't initialized to zero,
and thus can't be filled properly by the driver.

Fixes: 4a4b8169501b ("cfg80211: Accept multiple RSSI thresholds for CQM")
Fixes: 9930380f0bd8 ("cfg80211: implement IWRATE")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>