Commit Graph

767651 Commits

Author SHA1 Message Date
Laura Abbott
f92d19e0ef kbuild: Use HOST*FLAGS options from the command line
Now that we have the rename in place, reuse the HOST*FLAGS options as
something that can be set from the command line and included with the
rest of the flags.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Laura Abbott
8377bd2b9e kbuild: Rename HOST_LOADLIBES to KBUILD_HOSTLDLIBS
In preparation for enabling command line LDLIBS, re-name HOST_LOADLIBES
to KBUILD_HOSTLDLIBS as the internal use only flags. Also rename
existing usage to HOSTLDLIBS for consistency. This should not have any
visible effects.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Laura Abbott
b90a368000 kbuild: Rename HOSTLDFLAGS to KBUILD_HOSTLDFLAGS
In preparation for enabling command line LDFLAGS, re-name HOSTLDFLAGS
to KBUILD_HOSTLDFLAGS as the internal use only flags. This should not
have any visible effects.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Laura Abbott
10844aebf4 kbuild: Rename HOSTCXXFLAGS to KBUILD_HOSTCXXFLAGS
In preparation for enabling command line CXXFLAGS, re-name HOSTCXXFLAGS
to KBUILD_HOSTCXXFLAGS as the internal use only flags. This should not
have any visible effects.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Laura Abbott
96f14fe738 kbuild: Rename HOSTCFLAGS to KBUILD_HOSTCFLAGS
In preparation for enabling command line CFLAGS, re-name HOSTCFLAGS to
KBUILD_HOSTCFLAGS as the internal use only flags. This should not have
any visible effects.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Laura Abbott
efa75c4923 arm64: Add build salt to the vDSO
The vDSO needs to have a unique build id in a similar manner
to the kernel and modules. Use the build salt macro.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Laura Abbott
b399baaaf7 powerpc: Add build salt to the vDSO
The vDSO needs to have a unique build id in a similar manner
to the kernel and modules. Use the build salt macro.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Laura Abbott
d623f60df0 x86: Add build salt to the vDSO
The vDSO needs to have a unique build id in a similar manner
to the kernel and modules. Use the build salt macro.

Acked-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Laura Abbott
9afb719e70 kbuild: Add build salt to the kernel and modules
In Fedora, the debug information is packaged separately (foo-debuginfo) and
can be installed separately. There's been a long standing issue where only
one version of a debuginfo info package can be installed at a time. There's
been an effort for Fedora for parallel debuginfo to rectify this problem.

Part of the requirement to allow parallel debuginfo to work is that build ids
are unique between builds. The existing upstream rpm implementation ensures
this by re-calculating the build-id using the version and release as a
seed. This doesn't work 100% for the kernel because of the vDSO which is
its own binary and doesn't get updated when embedded.

Fix this by adding some data in an ELF note for both the kernel and modules.
The data is controlled via a Kconfig option so distributions can set it
to an appropriate value to ensure uniqueness between builds.

Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Randy Dunlap
934193a654 kbuild: verify that $DEPMOD is installed
Verify that 'depmod' ($DEPMOD) is installed.
This is a partial revert of commit 620c231c7a
("kbuild: do not check for ancient modutils tools").

Also update Documentation/process/changes.rst to refer to
kmod instead of module-init-tools.

Fixes kernel bugzilla #198965:
https://bugzilla.kernel.org/show_bug.cgi?id=198965

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: Lucas De Marchi <lucas.de.marchi@gmail.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Chih-Wei Huang <cwhuang@linux.org.tw>
Cc: stable@vger.kernel.org # any kernel since 2012
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Masahiro Yamada
c417fbce98 kbuild: move bin2c back to scripts/ from scripts/basic/
Commit 8370edea81 ("bin2c: move bin2c in scripts/basic") moved bin2c
to the scripts/basic/ directory, incorrectly stating "Kexec wants to
use bin2c and it wants to use it really early in the build process.
See arch/x86/purgatory/ code in later patches."

Commit bdab125c93 ("Revert "kexec/purgatory: Add clean-up for
purgatory directory"") and commit d6605b6bbe ("x86/build: Remove
unnecessary preparation for purgatory") removed the redundant
purgatory build magic entirely.

That means that the move of bin2c was unnecessary in the first place.

fixdep is the only host program that deserves to sit in the
scripts/basic/ directory.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Elena Reshetova
b56e535509 Coccinelle: add atomic_as_refcounter script
atomic_as_refcounter.cocci script allows detecting
cases when refcount_t type and API should be used
instead of atomic_t.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-07-18 01:18:05 +09:00
Linus Torvalds
9d3cce1e8b Linux 4.18-rc5 2018-07-15 12:49:31 -07:00
Linus Torvalds
41b55d23ee ARM: SoC fixes for 4.18-rc
- A fix for OMAP5 and DRA7 to make the branch predictor hardening
    settings take proper effect on secondary cores
  - Disable USB OTG on am3517 since current driver isn't working
  - Fix thermal sensor register settings on Armada 38x
  - Fix suspend/resume IRQs on pxa3xx
 -----BEGIN PGP SIGNATURE-----
 
 iQJDBAABCAAtFiEElf+HevZ4QCAJmMQ+jBrnPN6EHHcFAltK4qkPHG9sb2ZAbGl4
 b20ubmV0AAoJEIwa5zzehBx3pS0P/i4cTb8pESaYltSiVXePn8Ii6LJa0zxKZ4SK
 Yb2jBAFliG319HX2uFNsu42DfhgfdjBlhjkK/5pyOmMyo/t6YLDmC+qmeMhSCwbi
 913eZav3UxdegJWFauU8P/khyxPD2nCeDqETzhANuzEB6+ayhi+cgIjpnx+8JLyK
 0q5cifBEdRbZO9UGG+IFqt3TLpeAuCIbWLzTCOmdEQ706Zw2TPzzR6RTBt+kfupA
 j7Z0pg1yzK40TWyv1ZOyYC7yw2S+9cuT4gdXE/DUgyT4dGlE/deE9iT9D/s8fgAL
 Fser9jLbC5rbNQ1MnLRuGtbidvpiq2iCyf7G/FTJD3eoe1AGeaVooa+Jsz9LgEN6
 JFJ/sxD8c6PSAJ8t9Dmv9eFOhia0V8XzjtEinWJ2E8F0cgMLxG1y4Ek0cnvaRgZG
 2VMfNLIN0iQvYj1FHLJEYkOFEJ+3szJYC8Ejr5RdMUAShUHzqTw1XB4D9IPljJm9
 fvrk20LmHRosvcrtqgUNRtMdfEvnTaUMB427ywYyH6Mz75L30CyE7FWohtoL+Qm3
 mjB/qQ+c4dWj0YHKLSRhG40hP4Bzo/ljeuzgLs3/crRh12qBHxhE73rUvCpctCyA
 VBrU4F+I/a8cJPDqLYtwK8RuMFcYQTWogF3OVWIa+xlWRINYFO8hTgHETSHUtkQY
 TGpglcH0
 =lmky
 -----END PGP SIGNATURE-----

Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:

 - A fix for OMAP5 and DRA7 to make the branch predictor hardening
   settings take proper effect on secondary cores

 - Disable USB OTG on am3517 since current driver isn't working

 - Fix thermal sensor register settings on Armada 38x

 - Fix suspend/resume IRQs on pxa3xx

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: dts: am3517.dtsi:  Disable reference to OMAP3 OTG controller
  ARM: DRA7/OMAP5: Enable ACTLR[0] (Enable invalidates of BTB) for secondary cores
  ARM: pxa: irq: fix handling of ICMR registers in suspend/resume
  ARM: dts: armada-38x: use the new thermal binding
2018-07-15 09:49:21 -07:00
Linus Torvalds
37b5dca289 RTC fixes for 4.18
- an important core fix for RTCs using the core offsetting only one driver is
 affected.
  - a fix for the error path of mrst
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEXx9Viay1+e7J/aM4AyWl4gNJNJIFAltKYQYACgkQAyWl4gNJ
 NJIKGhAArX+cn/MjFGYczb31UbGKsGIasPH86sze1vZ56gA/lq8mKGO+N5ftQ9ex
 BjRa6ohT6kp7dmRsuYwkjRDuMw6syb1TDXlxWRP+aH9iFrWlD/mu59X9EN3TsFHP
 0/DDbZNQf7RE8Qd9FYgmo5dOqt9VSLw7C8Tb2xcblZX44ee1fcnuwsqxcyivUJTQ
 Q/HWkf09IUzOfhkVXPhyOTD/NX8qT64V1jSaW4S3ZJZAlRDCxIvZmDP3FWDsHdfy
 r/0dLbUE8hy3QtXOzeknjsxGaqsCPiVwKveVVBxxjCiT9/uUe6rqHT/eZ0JAqbKE
 MybxtqqCV+KrAR3nVdN4dNan18hCwhPUaJEZ/WkCENQlvkQ+VDPQPWTAOGZENrZn
 UE6ZbGeoN0Ysg1aN0RaavKDsSdh1QgkNgfsVW3gbUHuG99N0N5IR1z3OKGo1XB9U
 FyVOs3+3AtCkdyRrF1OOjn03lm0jrDbTbQCpyjKTXWWWeCKu/d7pXSSSD7KrT3AD
 ltyamhL1avudHpsQxoDpC/UNXagkLaZ3BbZxvKDB3rpjp9u0IYIslPiHRKMfITG1
 IMTbPGLdQdfC4OxQ+0U4CCrobJaRU1on/z2CRGjTAzatXhUUkDacWe8XEpArwASR
 yWfNMZ3GGWYMqLOzD+TX6tD3KqnolQVAROFYbbQwT+D4PGqQxFg=
 =h23M
 -----END PGP SIGNATURE-----

Merge tag 'rtc-4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC fixes from Alexandre Belloni:
 "Two fixes for 4.18:

   - an important core fix for RTCs using the core offsetting only one
     driver is affected

   - a fix for the error path of mrst"

* tag 'rtc-4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  rtc: fix alarm read and set offset
  rtc: mrst: fix error code in probe()
2018-07-14 16:15:19 -07:00
Olof Johansson
13e66ceea1 Two omap fixes for v4.18-rc cycle
Turns out the recent patches for ARM branch predictor hardening are
 not working on omap5 and dra7 as planned because the secondary CPU
 is parked to the bootrom code. We can't configure it in the bootloader.
 So we must enable invalidates of BTB for omap5 and dra7 secondary
 core in the kernel.
 
 And there's a fix for reserved register access for am3517. The
 usb otg module on am3517 is not the same as for other omap3.
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCAAvFiEEkgNvrZJU/QSQYIcQG9Q+yVyrpXMFAltImsMRHHRvbnlAYXRv
 bWlkZS5jb20ACgkQG9Q+yVyrpXOqNw/7BAD1n1sS2Sq+6QdYLNvWkxlstcarDf29
 5jolIQJCaa60WF9C1oTaoy59+UcaiLyk2dWYGgi1ZDce4ihhyIhQUFscHab2Zh0B
 o4zGXuTnTRBRiCKSI3ue8MTLTpYkuSmoTfWJu3ACEmR0co9J9sHztYz4yd1vj7E6
 tWvYLsYv7av4URBNaL4ieeUAZrailRQ3l5vg/+fJ7Xhk1+Ue3bQUmb3DDtypD1Ub
 OVFVtHGJdxDLaKJ0fhYPIoZYLhIe9BSuxboGrmh/vpyn6kuZ2Q/iWFSyX4kfveoH
 uEPWzJ6xMe0XNsxyuZ9bYO1rsBrOxXGzZNrgmiLI+GQ4uTK+e68vHPOimtWsNVb1
 hMpr8eTiyEUR/lhtMVoizGVPiNnJfhfnbIrUx5g80mAiwogIp9p3IEYHQD2zh4Ly
 susyjPV9TWoesS1RUrJz2N59qLgSPdOYhmfpaYmc31mVEXu+TiDDxyrUNz++or10
 UfJIo/MGDoIWbuRPMRfQEzdJqv13D0FuVbXkgaNWIvAnuDlqQx27dQLDRPepZqS3
 kHeOwrxf4h6NrlbCAdF4wn34WLbuMIdpp6rxstGsPi9TVR3PytetBtMlqMkJnfd6
 Yg3WcbN695ZNEod1tJhj5E8yUAdYtYPFKSX0egF4z/HrZ4NrjG/JB0gSXXSeS2Q7
 X7ecetNHONs=
 =Wci4
 -----END PGP SIGNATURE-----

Merge tag 'omap-for-v4.18/fixes-rc4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Two omap fixes for v4.18-rc cycle

Turns out the recent patches for ARM branch predictor hardening are
not working on omap5 and dra7 as planned because the secondary CPU
is parked to the bootrom code. We can't configure it in the bootloader.
So we must enable invalidates of BTB for omap5 and dra7 secondary
core in the kernel.

And there's a fix for reserved register access for am3517. The
usb otg module on am3517 is not the same as for other omap3.

* tag 'omap-for-v4.18/fixes-rc4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: am3517.dtsi:  Disable reference to OMAP3 OTG controller
  ARM: DRA7/OMAP5: Enable ACTLR[0] (Enable invalidates of BTB) for secondary cores

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-07-14 15:14:02 -07:00
Olof Johansson
d4f72a70fe mvebu fixes for 4.18 (part 1)
Use the new thermal binding on Armada 38x allowing to use a driver fix
 which is already part of the kernel.
 -----BEGIN PGP SIGNATURE-----
 
 iF0EABECAB0WIQQYqXDMF3cvSLY+g9cLBhiOFHI71QUCW0eB8QAKCRALBhiOFHI7
 1a0PAKCRyt0vXcjr9HHBzhagibfgT4XrXgCfXG43C32Qjg5U1Ga39IIY3fcFMrY=
 =2Pjz
 -----END PGP SIGNATURE-----

Merge tag 'mvebu-fixes-4.18-1' of git://git.infradead.org/linux-mvebu into fixes

mvebu fixes for 4.18 (part 1)

Use the new thermal binding on Armada 38x allowing to use a driver fix
which is already part of the kernel.

* tag 'mvebu-fixes-4.18-1' of git://git.infradead.org/linux-mvebu:
  ARM: dts: armada-38x: use the new thermal binding

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-07-14 15:12:24 -07:00
Olof Johansson
4dbd2b429a This is the fixes set for v4.18 cycle.
This is a fix for suspending all pxa3xx platforms, where high
 number interrupts are not reenabled.
 -----BEGIN PGP SIGNATURE-----
 
 iQJLBAABCAA1FiEExgkueSa0u8n4Ls+HA/Z63R24yxIFAltGZjkXHHJvYmVydC5q
 YXJ6bWlrQGZyZWUuZnIACgkQA/Z63R24yxIp+g//ZAJ2ZivAeA5trS7W3NmdYIkJ
 jKiUOuBKUEs0+jgG62yFDWGhuMeGjOQN3tZooqGTC2gt49jQMTB/eLS+grH9dtDi
 3xvjtJ3byP+UdoMDXwTnWgzRBlaDDAQaqQMwYDTXrETurj5j91n9Y7YQ+36Kkf9c
 R9kn9dUeXnOZI/kQwzJQUteGYAORo16zvZPp5ahnySpNpZ+6wggW9f1kVC4mwXUb
 h67z7FDpg7NYGJS1o3QfzostpcCu73+IBSpGk6FHrLjlU0fEO8+P1BFOt+NFbYzm
 uDJU/TGWkzdGn3wEHaBAR4CfO3UVn2ao/9QB5ArqH2rCAw0DzE/DOtL2lmC86p3x
 0dvcxDGsaaXEbihFZX710X15Cj3Q2O9qgKWgaCHGheaz9FYaCcBu6pA+8LydILHt
 j0BYjLrdSVe/6lrEGLSqNsU51/3puSMTOTDm243aclWjkhMynxNeelqVs02anebP
 eZ1uCljMqbWWcoYS/O4Qu4iCsGH+F/gavOVYs0nG1kCcj/EyOHC8PXbNatpLREO9
 b75cjyiWvub3sKLAyEBN4KQeaqy2aOJatHvHIfL99MRt8xQ4WMk7ruXIoSvNPh/J
 OHof4l8Y26RQW1YkI5+1PMatLXTf4xJECo+XsNFpZiWY97GnL37kPDpfX5qX3W/s
 b+Y/8ugL0eGzChCCD0w=
 =nVSa
 -----END PGP SIGNATURE-----

Merge tag 'pxa-fixes-4.18' of https://github.com/rjarzmik/linux into fixes

This is the fixes set for v4.18 cycle.

This is a fix for suspending all pxa3xx platforms, where high
number interrupts are not reenabled.

* tag 'pxa-fixes-4.18' of https://github.com/rjarzmik/linux:
  ARM: pxa: irq: fix handling of ICMR registers in suspend/resume

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-07-14 15:11:41 -07:00
Linus Torvalds
c31496dbac xen: fixes for 4.18-rc5
-----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCW0myzgAKCRCAXGG7T9hj
 vrEhAP9/WLKMyJy7dCkw02+euGS4baTFS38vJMOzmhudyRCkJQD8Dvuu7hoA0hoX
 Aqoi/KH/DQUOHuSEelKOSlnQ4oQ+wQw=
 =/N+q
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-4.18-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "Two related fixes for a boot failure of Xen PV guests"

* tag 'for-linus-4.18-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: setup pv irq ops vector earlier
  xen: remove global bit from __default_kernel_pte_mask for pv guests
2018-07-14 12:30:13 -07:00
Linus Torvalds
2da8c426d9 for-linus-20180713
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAltJZNkQHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpiYPEADGvN9iXz71j5vKV4FmV6nRo66gRhlegGg2
 QDcf88BVUlCly+wZq5zHvyWoI8PFzHD0DOK83u6mPkCm1oRG5mETatBnK3y6xxPK
 10V2UadAALD0ZA6bS4Xj4toKVouZt2mC8xwLR/TCqmCN45eL+7Y2IZuegu6GcESE
 dxCrnQ8uFKLcDOAPXHIPGN6IFM7gyAAQjBvHS3mvIyKuVo+0Rwv4S2q7DcAZmxer
 8nzT6GhwHCzos1kjZRrJhWe9WWSFprI504rhF58h4PTx1GXwR5Arsmqz5DaftGVI
 0Co+uodx8uUrDP+9ChgJKgPT/eiOEmO5oUS531XFcbKNwU0vNktXpne5e/0MAeUG
 e5uwm8x35UIbwI07+Av78FyYrRSe8IBdv492uT+WB8uTwbwts3BJNr+FgeXw3h9+
 jGIRtWBuHY623mqsiJlQ7WOopK8raHfl2zZcrRsWQcAByh2v9lzV60voY50ssNrR
 Os/ZdLN4g+BgP0gfcHjm0Km2q4RO/hHTVq06oPbydkOjbanHvKhqtLJAGlMBlGAY
 Z65+nDu1xTZtKMMDU9r42K5zWzylnW9pdnOYMz6q+PyQXhBaZGmAOQ2Mm/ohGf1f
 8Hs+5fHBQA090bpLAWiuJvEAKVKGhP/TCenKY/PhPkkdIQgIoJce9cgQYSjnuc/W
 Nejp8SStHA==
 =wZtn
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-20180713' of git://git.kernel.dk/linux-block

Pull block fix from Jens Axboe:
 "Just a single regression fix (from 4.17) for bsg, fixing an EINVAL
  return on non-data commands"

* tag 'for-linus-20180713' of git://git.kernel.dk/linux-block:
  bsg: fix bogus EINVAL on non-data commands
2018-07-14 12:28:00 -07:00
Linus Torvalds
f353078f02 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "11 fixes"

* emailed patches form Andrew Morton <akpm@linux-foundation.org>:
  reiserfs: fix buffer overflow with long warning messages
  checkpatch: fix duplicate invalid vsprintf pointer extension '%p<foo>' messages
  mm: do not bug_on on incorrect length in __mm_populate()
  mm/memblock.c: do not complain about top-down allocations for !MEMORY_HOTREMOVE
  fs, elf: make sure to page align bss in load_elf_library
  x86/purgatory: add missing FORCE to Makefile target
  net/9p/client.c: put refcount of trans_mod in error case in parse_opts()
  mm: allow arch to supply p??_free_tlb functions
  autofs: fix slab out of bounds read in getname_kernel()
  fs/proc/task_mmu.c: fix Locked field in /proc/pid/smaps*
  mm: do not drop unused pages when userfaultd is running
2018-07-14 11:14:33 -07:00
Eric Biggers
fe10e398e8 reiserfs: fix buffer overflow with long warning messages
ReiserFS prepares log messages into a 1024-byte buffer with no bounds
checks.  Long messages, such as the "unknown mount option" warning when
userspace passes a crafted mount options string, overflow this buffer.
This causes KASAN to report a global-out-of-bounds write.

Fix it by truncating messages to the buffer size.

Link: http://lkml.kernel.org/r/20180707203621.30922-1-ebiggers3@gmail.com
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reported-by: syzbot+b890b3335a4d8c608963@syzkaller.appspotmail.com
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:10 -07:00
Joe Perches
ffe075132a checkpatch: fix duplicate invalid vsprintf pointer extension '%p<foo>' messages
Multiline statements with invalid %p<foo> uses produce multiple
warnings.  Fix that.

e.g.:

$ cat t_block.c
void foo(void)
{
	MY_DEBUG(drv->foo,
		 "%pk",
		 foo->boo);
}

$ ./scripts/checkpatch.pl -f t_block.c
WARNING: Missing or malformed SPDX-License-Identifier tag in line 1
#1: FILE: t_block.c:1:
+void foo(void)

WARNING: Invalid vsprintf pointer extension '%pk'
#3: FILE: t_block.c:3:
+	MY_DEBUG(drv->foo,
+		 "%pk",
+		 foo->boo);

WARNING: Invalid vsprintf pointer extension '%pk'
#3: FILE: t_block.c:3:
+	MY_DEBUG(drv->foo,
+		 "%pk",
+		 foo->boo);

total: 0 errors, 3 warnings, 6 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

t_block.c has style problems, please review.

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.

Link: http://lkml.kernel.org/r/9e8341bbe4c9877d159cb512bb701043cbfbb10b.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: "Tobin C. Harding" <me@tobin.cc>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:10 -07:00
Michal Hocko
bb177a732c mm: do not bug_on on incorrect length in __mm_populate()
syzbot has noticed that a specially crafted library can easily hit
VM_BUG_ON in __mm_populate

  kernel BUG at mm/gup.c:1242!
  invalid opcode: 0000 [#1] SMP
  CPU: 2 PID: 9667 Comm: a.out Not tainted 4.18.0-rc3 #644
  Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 05/19/2017
  RIP: 0010:__mm_populate+0x1e2/0x1f0
  Code: 55 d0 65 48 33 14 25 28 00 00 00 89 d8 75 21 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 75 18 f1 ff 0f 0b e8 6e 18 f1 ff <0f> 0b 31 db eb c9 e8 93 06 e0 ff 0f 1f 00 55 48 89 e5 53 48 89 fb
  Call Trace:
     vm_brk_flags+0xc3/0x100
     vm_brk+0x1f/0x30
     load_elf_library+0x281/0x2e0
     __ia32_sys_uselib+0x170/0x1e0
     do_fast_syscall_32+0xca/0x420
     entry_SYSENTER_compat+0x70/0x7f

The reason is that the length of the new brk is not page aligned when we
try to populate the it.  There is no reason to bug on that though.
do_brk_flags already aligns the length properly so the mapping is
expanded as it should.  All we need is to tell mm_populate about it.
Besides that there is absolutely no reason to to bug_on in the first
place.  The worst thing that could happen is that the last page wouldn't
get populated and that is far from putting system into an inconsistent
state.

Fix the issue by moving the length sanitization code from do_brk_flags
up to vm_brk_flags.  The only other caller of do_brk_flags is brk
syscall entry and it makes sure to provide the proper length so t here
is no need for sanitation and so we can use do_brk_flags without it.

Also remove the bogus BUG_ONs.

[osalvador@techadventures.net: fix up vm_brk_flags s@request@len@]
Link: http://lkml.kernel.org/r/20180706090217.GI32658@dhcp22.suse.cz
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: syzbot <syzbot+5dcb560fe12aa5091c06@syzkaller.appspotmail.com>
Tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Zi Yan <zi.yan@cs.rutgers.edu>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:10 -07:00
Michal Hocko
e3d301cae0 mm/memblock.c: do not complain about top-down allocations for !MEMORY_HOTREMOVE
Mike Rapoport is converting architectures from bootmem to nobootmem
allocator.  While doing so for m68k Geert has noticed that he gets a
scary looking warning:

  WARNING: CPU: 0 PID: 0 at mm/memblock.c:230
  memblock_find_in_range_node+0x11c/0x1be
  memblock: bottom-up allocation failed, memory hotunplug may be affected
  Modules linked in:
  CPU: 0 PID: 0 Comm: swapper Not tainted
  4.18.0-rc3-atari-01343-gf2fb5f2e09a97a3c-dirty #7
  Call Trace: __warn+0xa8/0xc2
    kernel_pg_dir+0x0/0x1000
    netdev_lower_get_next+0x2/0x22
    warn_slowpath_fmt+0x2e/0x36
    memblock_find_in_range_node+0x11c/0x1be
    memblock_find_in_range_node+0x11c/0x1be
    memblock_find_in_range_node+0x0/0x1be
    vprintk_func+0x66/0x6e
    memblock_virt_alloc_internal+0xd0/0x156
    netdev_lower_get_next+0x2/0x22
    netdev_lower_get_next+0x2/0x22
    kernel_pg_dir+0x0/0x1000
    memblock_virt_alloc_try_nid_nopanic+0x58/0x7a
    netdev_lower_get_next+0x2/0x22
    kernel_pg_dir+0x0/0x1000
    kernel_pg_dir+0x0/0x1000
    EXPTBL+0x234/0x400
    EXPTBL+0x234/0x400
    alloc_node_mem_map+0x4a/0x66
    netdev_lower_get_next+0x2/0x22
    free_area_init_node+0xe2/0x29e
    EXPTBL+0x234/0x400
    paging_init+0x430/0x462
    kernel_pg_dir+0x0/0x1000
    printk+0x0/0x1a
    EXPTBL+0x234/0x400
    setup_arch+0x1b8/0x22c
    start_kernel+0x4a/0x40a
    _sinittext+0x344/0x9e8

The warning is basically saying that a top-down allocation can break
memory hotremove because memblock allocation is not movable.  But m68k
doesn't even support MEMORY_HOTREMOVE so there is no point to warn about
it.

Make the warning conditional only to configurations that care.

Link: http://lkml.kernel.org/r/20180706061750.GH32658@dhcp22.suse.cz
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Sam Creasey <sammy@sammy.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:10 -07:00
Oscar Salvador
24962af7e1 fs, elf: make sure to page align bss in load_elf_library
The current code does not make sure to page align bss before calling
vm_brk(), and this can lead to a VM_BUG_ON() in __mm_populate() due to
the requested lenght not being correctly aligned.

Let us make sure to align it properly.

Kees: only applicable to CONFIG_USELIB kernels: 32-bit and configured
for libc5.

Link: http://lkml.kernel.org/r/20180705145539.9627-1-osalvador@techadventures.net
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reported-by: syzbot+5dcb560fe12aa5091c06@syzkaller.appspotmail.com
Tested-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:10 -07:00
Philipp Rudo
fa8cbda88d x86/purgatory: add missing FORCE to Makefile target
- Build the kernel without the fix
- Add some flag to the purgatories KBUILD_CFLAGS,I used
  -fno-asynchronous-unwind-tables
- Re-build the kernel

When you look at makes output you see that sha256.o is not re-build in the
last step.  Also readelf -S still shows the .eh_frame section for
sha256.o.

With the fix sha256.o is rebuilt in the last step.

Without FORCE make does not detect changes only made to the command line
options.  So object files might not be re-built even when they should be.
Fix this by adding FORCE where it is missing.

Link: http://lkml.kernel.org/r/20180704110044.29279-2-prudo@linux.ibm.com
Fixes: df6f2801f5 ("kernel/kexec_file.c: move purgatories sha256 to common code")
Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>	[4.17+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:09 -07:00
piaojun
c290fba8c4 net/9p/client.c: put refcount of trans_mod in error case in parse_opts()
In my testing, the second mount will fail after umounting successfully.
The reason is that we put refcount of trans_mod in the correct case
rather than the error case in parse_opts() at last.  That will cause the
refcount decrease to -1, and when we try to get trans_mod again in
try_module_get(), we could only increase refcount to 0 which will cause
failure as follows:

parse_opts
  v9fs_get_trans_by_name
    try_module_get : return NULL to caller which cause error

So we should put refcount of trans_mod in error case.

Link: http://lkml.kernel.org/r/5B3F39A0.2030509@huawei.com
Fixes: 9421c3e641 ("net/9p/client.c: fix potential refcnt problem of trans module")
Signed-off-by: Jun Piao <piaojun@huawei.com>
Reviewed-by: Yiwen Jiang <jiangyiwen@huawei.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Dominique Martinet <dominique.martinet@cea.fr>
Tested-by: Dominique Martinet <dominique.martinet@cea.fr>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:09 -07:00
Nicholas Piggin
a90744bac5 mm: allow arch to supply p??_free_tlb functions
The mmu_gather APIs keep track of the invalidated address range
including the span covered by invalidated page table pages.  Ranges
covered by page tables but not ptes (and therefore no TLBs) still need
to be invalidated because some architectures (x86) can cache
intermediate page table entries, and invalidate those with normal TLB
invalidation instructions to be almost-backward-compatible.

Architectures which don't cache intermediate page table entries, or
which invalidate these caches separately from TLB invalidation, do not
require TLB invalidation range expanded over page tables.

Allow architectures to supply their own p??_free_tlb functions, which
can avoid the __tlb_adjust_range.

Link: http://lkml.kernel.org/r/20180703013131.2807-1-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: "Aneesh Kumar K. V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Nadav Amit <nadav.amit@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:09 -07:00
Tomas Bortoli
02f51d4593 autofs: fix slab out of bounds read in getname_kernel()
The autofs subsystem does not check that the "path" parameter is present
for all cases where it is required when it is passed in via the "param"
struct.

In particular it isn't checked for the AUTOFS_DEV_IOCTL_OPENMOUNT_CMD
ioctl command.

To solve it, modify validate_dev_ioctl(function to check that a path has
been provided for ioctl commands that require it.

Link: http://lkml.kernel.org/r/153060031527.26631.18306637892746301555.stgit@pluto.themaw.net
Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com>
Signed-off-by: Ian Kent <raven@themaw.net>
Reported-by: syzbot+60c837b428dc84e83a93@syzkaller.appspotmail.com
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:09 -07:00
Vlastimil Babka
e70cc2bd57 fs/proc/task_mmu.c: fix Locked field in /proc/pid/smaps*
Thomas reports:
 "While looking around in /proc on my v4.14.52 system I noticed that all
  processes got a lot of "Locked" memory in /proc/*/smaps. A lot more
  memory than a regular user can usually lock with mlock().

  Commit 493b0e9d94 (in v4.14-rc1) seems to have changed the behavior
  of "Locked".

  Before that commit the code was like this. Notice the VM_LOCKED check.

           (vma->vm_flags & VM_LOCKED) ?
                (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0);

  After that commit Locked is now the same as Pss:

	  (unsigned long)(mss->pss >> (10 + PSS_SHIFT)));

  This looks like a mistake."

Indeed, the commit has added mss->pss_locked with the correct value that
depends on VM_LOCKED, but forgot to actually use it.  Fix it.

Link: http://lkml.kernel.org/r/ebf6c7fb-fec3-6a26-544f-710ed193c154@suse.cz
Fixes: 493b0e9d94 ("mm: add /proc/pid/smaps_rollup")
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reported-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Daniel Colascione <dancol@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:11:09 -07:00
Christian Borntraeger
bce73e4842 mm: do not drop unused pages when userfaultd is running
KVM guests on s390 can notify the host of unused pages.  This can result
in pte_unused callbacks to be true for KVM guest memory.

If a page is unused (checked with pte_unused) we might drop this page
instead of paging it.  This can have side-effects on userfaultd, when
the page in question was already migrated:

The next access of that page will trigger a fault and a user fault
instead of faulting in a new and empty zero page.  As QEMU does not
expect a userfault on an already migrated page this migration will fail.

The most straightforward solution is to ignore the pte_unused hint if a
userfault context is active for this VMA.

Link: http://lkml.kernel.org/r/20180703171854.63981-1-borntraeger@de.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@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>
2018-07-14 11:11:09 -07:00
Pavel Tatashin
e181ae0c5d mm: zero unavailable pages before memmap init
We must zero struct pages for memory that is not backed by physical
memory, or kernel does not have access to.

Recently, there was a change which zeroed all memmap for all holes in
e820.  Unfortunately, it introduced a bug that is discussed here:

  https://www.spinics.net/lists/linux-mm/msg156764.html

Linus, also saw this bug on his machine, and confirmed that reverting
commit 124049decb ("x86/e820: put !E820_TYPE_RAM regions into
memblock.reserved") fixes the issue.

The problem is that we incorrectly zero some struct pages after they
were setup.

The fix is to zero unavailable struct pages prior to initializing of
struct pages.

A more detailed fix should come later that would avoid double zeroing
cases: one in __init_single_page(), the other one in
zero_resv_unavail().

Fixes: 124049decb ("x86/e820: put !E820_TYPE_RAM regions into memblock.reserved")
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-07-14 11:02:20 -07:00
Linus Torvalds
2db39a2f49 Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:

 - I2C core bugfix regarding bus recovery

 - driver bugfix for the tegra driver

 - typo correction

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: recovery: if possible send STOP with recovery pulses
  i2c: tegra: Fix NACK error handling
  i2c: stu300: use non-archaic spelling of failes
2018-07-13 15:34:29 -07:00
Linus Torvalds
3951dbf232 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
 "A clocksource driver fix and a revert"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: arm_arch_timer: Set arch_mem_timer cpumask to cpu_possible_mask
  Revert "tick: Prefer a lower rating device only if it's CPU local device"
2018-07-13 13:36:36 -07:00
Linus Torvalds
aa0a3247c0 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf tool fixes from Ingo Molnar:
 "Misc tooling fixes: python3 related fixes, gcc8 fix, bashism fixes and
  some other smaller fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Use python-config --includes rather than --cflags
  perf script python: Fix dict reference counting
  perf stat: Fix --interval_clear option
  perf tools: Fix compilation errors on gcc8
  perf test shell: Prevent temporary editor files from being considered test scripts
  perf llvm-utils: Remove bashism from kernel include fetch script
  perf test shell: Make perf's inet_pton test more portable
  perf test shell: Replace '|&' with '2>&1 |' to work with more shells
  perf scripts python: Add Python 3 support to EventClass.py
  perf scripts python: Add Python 3 support to sched-migration.py
  perf scripts python: Add Python 3 support to Util.py
  perf scripts python: Add Python 3 support to SchedGui.py
  perf scripts python: Add Python 3 support to Core.py
  perf tools: Generate a Python script compatible with Python 2 and 3
2018-07-13 13:33:09 -07:00
Linus Torvalds
75adbd1386 Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fix from Ingo Molnar:
 "Fix a UEFI mixed mode (64-bit kernel on 32-bit UEFI) reboot loop
  regression"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/x86: Fix mixed mode reboot loop by removing pointless call to PciIo->Attributes()
2018-07-13 13:30:21 -07:00
Linus Torvalds
ae4ea3975d Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull rseq fixes from Ingo Molnar:
 "Various rseq ABI fixes and cleanups: use get_user()/put_user(),
  validate parameters and use proper uapi types, etc"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rseq/selftests: cleanup: Update comment above rseq_prepare_unload
  rseq: Remove unused types_32_64.h uapi header
  rseq: uapi: Declare rseq_cs field as union, update includes
  rseq: uapi: Update uapi comments
  rseq: Use get_user/put_user rather than __get_user/__put_user
  rseq: Use __u64 for rseq_cs fields, validate user inputs
2018-07-13 12:50:42 -07:00
Linus Torvalds
4659fc8484 Regression, user visible bugs, and crashing fixes:
- cxgb4 could wrongly fail MR creation due to a typo
 
 - Various crashes if the wrong QP type is mixed in with APIs that expect
   other types
 
 - Syzkaller oops
 
 - Using ERR_PTR and NULL together cases HFI1 to crash in some cases
 
 - mlx5 memory leak in error unwind
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCgAGBQJbSNzSAAoJEDht9xV+IJsarfQP/38i9pbDqWdniEhv42CisS1D
 aZYygJ6yAsoEPmEI1oIGtJURte44wxHWmWO2Jbz8aTFl19tSh2cZgFfsNKImSU5A
 5ON19gxOeQ/KiZPmfbgP8cgunU41DpYq3twW8NvW9u5JTl1nbFKtpWfJxKVvjlsu
 PwiFrQxG43/9BrooHJc4eogJHmB77iypR3NmkagAM3oSx/d35zt+Wnw45bybIl8e
 T6OvyEvNHlGLQoqE8j4JYDN6whLwr7uqtcJXv/ukjhkD4WMb8ti9QZH6FPA+8pGG
 oRO5AlbWpcSHThu4tYYoThEdVMLjS5RnzOOUyMiHr7CS+MlEPrKtR5D23f3egSyU
 lUETkyPfkVRSrfD9LnOrj+W6xjwNMJm2Rq/zexVnoKjRrl5asfmDTTAhWJxu7CMK
 Oeb39ue6r7A3wEpaLWlqqrVnzIS+rKKKFCxqc+ni/JUTX0EPr+OcVJav+JmfjpKd
 Q24sbiSkoAp7HRJnsenCX4Kv2x55ClhLktGnltgoJtzsMbT/EOO38d2LrYpWkCkX
 aoi4Xpg1rOvY9biy4dDtGmawsKgEKwJ2j/xr6RQdKZZAifeabnoro/ekSj5/SquQ
 vUfATYG+JEKGethWgO2A7/tgdo7artrN77w0eM0yKtNuJwUGLHCuXbDFUgFxapvm
 RIXvnUEp9Q27bc2JjX3z
 =WDR8
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "Things have been quite slow, only 6 RC patches have been sent to the
  list. Regression, user visible bugs, and crashing fixes:

   - cxgb4 could wrongly fail MR creation due to a typo

   - various crashes if the wrong QP type is mixed in with APIs that
     expect other types

   - syzkaller oops

   - using ERR_PTR and NULL together cases HFI1 to crash in some cases

   - mlx5 memory leak in error unwind"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/mlx5: Fix memory leak in mlx5_ib_create_srq() error path
  RDMA/uverbs: Don't fail in creation of multiple flows
  IB/hfi1: Fix incorrect mixing of ERR_PTR and NULL return values
  RDMA/uverbs: Fix slab-out-of-bounds in ib_uverbs_ex_create_flow
  RDMA/uverbs: Protect from attempts to create flows on unsupported QP
  iw_cxgb4: correctly enforce the max reg_mr depth
2018-07-13 12:42:14 -07:00
Linus Torvalds
2a7e1211e1 VFIO fixes for v4.18
- Fix deadlock in mbochs sample driver (Alexey Khoroshilov)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.14 (GNU/Linux)
 
 iQIcBAABAgAGBQJbSMhRAAoJECObm247sIsindIQAI3R+3QGXWn8TO/ipJEW4aEs
 BPaXbsCjbUt5K+CbkcpQEUMluy2A9yHdyEKDMqTbEinycUw2EsVpE/eu5qz1M5nZ
 sWRvbDza8tuS52d7OZchRoGVltIkm1mMHCeVYYiy2RgIRMYFjCFB4efbDV7Pznrp
 HhVAvBmv0i0Mk+nqNmK9wJn0sGiU/n5Qw5k57oQfUjsaFSyGVDTP2A7EAzn/F3YU
 AH2DMN0Dn0BiVtS/pKKXQP6mx3UvBuiONphgSWDE4Lfv+gEhUNYsjjMK9qWkuHFO
 w1evHGgPN4AGdZu/SSv4Hqnv3Y341DgQ/jRQVKt/BH72Ffqf/6qv/ahA2gPOCjmd
 808gkuJlnVWUt8MqJdo4oDQu+9P3nnMoNoY1uN6LkLgMl1m9knVPS/fFGXxhF7/M
 KLCGovQRXBq8+L0JJ2BP/++SuSmnE5t6dKdjkW+AF38UbZzrRZs94baYx5gUfG4q
 kQv2dl3Z6XZxzxdjFr4uOqHgY4rmzey8zn6RkPBPpdlZ1zl+XWnJYvwhdv1kBwRj
 VZjiKZZFgIegCinQ2ynjEg/bLiwHeXBgFSja1bcmfu5ikup4NgXp+ExhYYdKpbkG
 9H7GS19et74GUk2LzdtlXLK+rRlGduBsMBuMJ/kHpfE7uoKWa66tMmZ22xNPhe9c
 jG+tU9dORicFp2WNA0O7
 =hKUs
 -----END PGP SIGNATURE-----

Merge tag 'vfio-v4.18-rc5' of git://github.com/awilliam/linux-vfio

Pull VFIO fix from Alex Williamson:
 "Fix deadlock in mbochs sample driver (Alexey Khoroshilov)"

* tag 'vfio-v4.18-rc5' of git://github.com/awilliam/linux-vfio:
  sample: vfio-mdev: avoid deadlock in mdev_access()
2018-07-13 12:37:45 -07:00
Linus Torvalds
79facf308f Kbuild fixes for v4.18 (2nd)
- update Kbuild and Kconfig documents
 
  - sanitize -I compiler option handling
 
  - update extract-vmlinux script to recognize LZ4 and ZSTD
 
  - fix tools Makefiles
 
  - update tags.sh to handle __ro_after_init
 
  - suppress warnings in case getconf does not recognize LFS_* parameters
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJbSK5LAAoJED2LAQed4NsGOJQP/3bwaUKcOgWyBeYD1l/lcu5q
 spysRnxR7e+7Lp/HQV0v2XzOM9G0DWBA+j/dYUp8RcPsWOrXJkM8QkNk584YfxBY
 ve0q/6QlUGmjgiizdT86xYpKhCfdF2uSnx7QvM9qXyt+WlyVzmeK1QatwDmcMuPF
 ZLgi7P8XQ4uaUTIYss79SpDAMOCyCOHa2bapiiqJ2azR32L1AiwRF36u1bCVKMIC
 gfcPRN2XjOkJfp/l5JYzJbr28uE80n9d0b9ua+vO8aKs4RGBiLwM2ci+43EPH19i
 yNrgfBkjOO3HVCpS60STHARktNx+osSfMjTFP3xg+5vyIDwbqJl0+hgNEXRRUsCq
 nSA7uvRwppnvPLWuI3/iaE0BvN1rBqVssateylsuOIfrcgFb71WAHCGWX+9t1QT5
 4V3kkH+QgqEEFQg7BUrXI9ccTpT28vDBKjRD4O8O/SLtWo0GprXvuje6ZxZpa/ob
 8V2MVcdPuLamZkSCy2I6pIIfNZ0wifI6/WX1HQ0A0VzOw5dJWH4qO/DMy7l8vw3m
 fP84E79011PZ8BByrEE1EZ0cWeMGInoyC3Q5BmB0b4R2uxSC2vEhCct4MJpOxVYQ
 gUBgiti33mkvHmpZKGTgt89+71X3u26HYOjgTO2vnffSYpKGdYkDAhMyxxw9EqqJ
 AcBKpL1fxz2Ik7DgW75J
 =aXcg
 -----END PGP SIGNATURE-----

Merge tag 'kbuild-fixes-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - update Kbuild and Kconfig documents

 - sanitize -I compiler option handling

 - update extract-vmlinux script to recognize LZ4 and ZSTD

 - fix tools Makefiles

 - update tags.sh to handle __ro_after_init

 - suppress warnings in case getconf does not recognize LFS_* parameters

* tag 'kbuild-fixes-v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: suppress warnings from 'getconf LFS_*'
  scripts/tags.sh: add __ro_after_init
  tools: build: Use HOSTLDFLAGS with fixdep
  tools: build: Fixup host c flags
  tools build: fix # escaping in .cmd files for future Make
  scripts: teach extract-vmlinux about LZ4 and ZSTD
  kbuild: remove duplicated comments about PHONY
  kbuild: .PHONY is not a variable, but PHONY is
  kbuild: do not drop -I without parameter
  kbuild: document the KBUILD_KCONFIG env. variable
  kconfig: update user kconfig tools doc.
  kbuild: delete INSTALL_FW_PATH from kbuild documentation
  kbuild: update ARCH alias info for sparc
  kbuild: update ARCH alias info for sh
2018-07-13 12:15:12 -07:00
Linus Torvalds
9d2e34897d More arm64 fixes:
- Revert back to the 'linux' target for LD, as 'elf' breaks some distributions
 
 - Fix preemption race when testing whether the vector unit is in use or not
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABCgAGBQJbR3C9AAoJELescNyEwWM0C8kH/RGMnLDIcXYscz3/Jn3L5Yrm
 4SYnGiBO982jVjMdLxbzKpOvKHYltZLN3mQMtJuMB/oiFJHE9LIHOvcSJY+i9IxD
 Ml/16UeU7l1amh9xfxaO7c5TPsJ6KKC2qd/cuqJbv2wReLhZzCotBjcbVOUrIkh/
 LFU5Jhe1W4Unx339kPGq7qw2yXpvRNUz3hSGV02gFrefFgrpl/oJRGMJ4HLM8BcY
 pQXaAU4p0wVHjEQsJvUsHvIkGAKwzS++h21hud/L+6zdXSF3DN5NBthjJYGTX2zO
 xyD8DUxX6uuKJFQ3jFir7/3nhufB9udrp0B9HaifaESdwS/k9OVwiBaFKy65USQ=
 =tvsL
 -----END PGP SIGNATURE-----

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Catalin's out enjoying the sunshine, so I'm sending the fixes for a
  couple of weeks (although there hopefully won't be any more!).

  We've got a revert of a previous fix because it broke the build with
  some distro toolchains and a preemption fix when detemining whether or
  not the SIMD unit is in use.

  Summary:

   - Revert back to the 'linux' target for LD, as 'elf' breaks some
     distributions

   - Fix preemption race when testing whether the vector unit is in use
     or not"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: neon: Fix function may_use_simd() return error status
  Revert "arm64: Use aarch64elf and aarch64elfb emulation mode variants"
2018-07-13 11:48:34 -07:00
Linus Torvalds
e6ef760731 Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "A couple of small fixes this time around from Steven for an
  interaction between ftrace and kernel read-only protection, and
  Vladimir for nommu"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8780/1: ftrace: Only set kernel memory back to read-only after boot
  ARM: 8775/1: NOMMU: Use instr_sync instead of plain isb in common code
2018-07-13 11:44:12 -07:00
Linus Torvalds
35a84f34cf Joel Fernandes asked to add a feature in tracing that Android had its
own patch internally for. I took it back in 4.13. Now he realizes that
 he had a mistake, and swapped the values from what Android had. This
 means that the old Android tools will break when using a new kernel
 that has the new feature on it.
 
 The options are:
 
  1. To swap it back to what Android wants.
  2. Add a command line option or something to do the swap
  3. Just let Android carry a patch that swaps it back
 
 Since it requires setting a tracing option to enable this anyway,
 I doubt there are other users of this than Android. Thus, I've
 decided to take option 1. If someone else is actually depending on the
 order that is in the kernel, then we will have to revert this change
 and go to option 2 or 3.
 -----BEGIN PGP SIGNATURE-----
 
 iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCW0ib3BQccm9zdGVkdEBn
 b29kbWlzLm9yZwAKCRAp5XQQmuv6qpH2APwJb1C72w6/QF9QK8I7HWzK3BN+9KuK
 xfJA+58HXzu7SgD+IXzhXW9tODU+sWbYr9cVOyj2ad6p8CYNDkPlVAJulwM=
 =XJE5
 -----END PGP SIGNATURE-----

Merge tag 'trace-v4.18-rc3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixlet from Steven Rostedt:
 "Joel Fernandes asked to add a feature in tracing that Android had its
  own patch internally for. I took it back in 4.13. Now he realizes that
  he had a mistake, and swapped the values from what Android had. This
  means that the old Android tools will break when using a new kernel
  that has the new feature on it.

  The options are:

   1. To swap it back to what Android wants.
   2. Add a command line option or something to do the swap
   3. Just let Android carry a patch that swaps it back

  Since it requires setting a tracing option to enable this anyway, I
  doubt there are other users of this than Android. Thus, I've decided
  to take option 1. If someone else is actually depending on the order
  that is in the kernel, then we will have to revert this change and go
  to option 2 or 3"

* tag 'trace-v4.18-rc3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Reorder display of TGID to be after PID
2018-07-13 11:40:11 -07:00
Linus Torvalds
a0092e5ec6 sound fixes for 4.18-rc5
Just a few HD-auio fixes: one fix for a possible mutex deadlock at
 HDMI hotplug handling is somewhat subtle and delicate, while the
 rest are usual device-specific quirks.
 -----BEGIN PGP SIGNATURE-----
 
 iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAltHb34OHHRpd2FpQHN1
 c2UuZGUACgkQLtJE4w1nLE/J3g//f6ZawZBWUiA2rcwzEEITqK9z4oySucxf+h+r
 8hrgsgGKxDpHPIVP8NeUdKuk30v/1iLT2Qb3BD3TeLu8xN+FmG3tt6V3Nt7IH3xi
 Y4f0oGVlzL8zyOvaY5VvsBdd4gAVSv6fDQj5IcOBgjS5YJJOE7kYKvx/X18q9uLM
 TpaTkcfPrFoCL61/6mYrpnDsuyoFAN4FR8LtWR3+AFrE8NeIxJjQt4ruBpbIFUmN
 U+4/G09y5dS9U25e9PUUSHbrMXJvQFj6qyKMRJeNv9FaHSqm0sOIY+Ft5ZAeRQTf
 J12H+Wuz5jy53+ufl4TD7WMY/QqCua2He+4HAn7w2oD4MQz6r7PTQP31mMlJvbGe
 zUvELpnt9QleP8Wo4Ldf78hEN0XZm9ULIV0k5f9tWOrGyJQD2DaQxmEfhwCkOMhO
 +t+9VCJIp9G5wd9uytckiK2M0oBC4mgflHDHySrJV/QOQO2r4J03O7J0UjjoC4uK
 DqPqv7wXLNIkOXemnZwVfu2iAFbmGllV4v0hjTGcjX1BBFP9t1KKK6Uiojen9ivM
 N4trQ+3hWaBgBUysMNpO7HhxFEJiGPHRgrRnYoe+MwXEzuWWL4g28Ym6+gm9a9oo
 WNf5crKTiw7/bS7kcGCX5jV/QTzCTxLc7EnUbudmtZTlWG2vYtYT40lAiBh5Q8ut
 9Zonzy0=
 =La+f
 -----END PGP SIGNATURE-----

Merge tag 'sound-4.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Just a few HD-auio fixes: one fix for a possible mutex deadlock at
  HDMI hotplug handling is somewhat subtle and delicate, while the rest
  are usual device-specific quirks"

* tag 'sound-4.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/ca0132: Update a pci quirk device name
  ALSA: hda/ca0132: Add Recon3Di quirk for Gigabyte G1.Sniper Z97
  ALSA: hda/realtek - two more lenovo models need fixup of MIC_LOCATION
  ALSA: hda - Handle pm failure during hotplug
2018-07-13 11:36:46 -07:00
Linus Torvalds
4596f55476 * fix one ensures that a variable passed in by reference to
acpi_nfit_ctl is always set to a value. An incremental patch is provided
 due to notice from testing in -next. The rest of the commits did not
 exhibit issues.
 
 * fix two fixes a return path in nsio_rw_bytes() that was not
 returning "bytes remain" as expected for the function.
 
 * fix three addresses an issue where applications polling on
 scrub-completion for the NVDIMM may falsely wakeup and read the wrong
 state value and cause hang.
 
 * the test unit changed the persistent capability attribute to fix up a broken
 assumption in the unit test infrastructure wrt the 'write_cache' attribute
 
 * An output ratelimit to dev_info is introduced to the dax device
 check_vma() function since this is easily triggered from userspace.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE5DAy15EJMCV1R6v9YGjFFmlTOEoFAltGe3oACgkQYGjFFmlT
 OErs8Q/9FA7nLUv0PN2fXXWpP2xrALn6tolalwv9Zvff1M+DUqPqCOAiG0+C+wnN
 qAWvxmTHbdtgfKU7KjC/dj7cAeMRXFVUD5ffNOZifEJ36r7nP1XC9uwPt36bouB8
 NMd38oWRlofjnND7NPTDdZAqPY1Lk8fztPKeMGL9ZcCItABABUYyU2InRJEZwdrs
 leVJfjZlvfp6MO7iC6E0hzDKl9G/5MMyDBgC4ostaRIiSpM0dsUaod5jeNbfKBhZ
 sGObLP9hNr9CZ4/4XcCChdCzsvlPIF7eWoXGka2pBoXYl7lXhmdVcf54+j4i5Ify
 zwP9Kcllvo4oRo4dwXpd+RGOMINKpF3PkBXTMAv+KURWS859ptQDku+WseVNRm0C
 j2kd0WtXHnMgBV3PrgCEp0lfQfUZaQe7ULgCpkI/k+jAmBKD6NN+6wCg3bXHCHlW
 S1sKlSLuwAp+LdIIlFeW6Sq5+qBAtacFU1YmIPVGKdiIwaK6B115eU6CNmNwT0Vr
 84zbcDbBxFn1wr0jasD72zXUM/NnxphMYTjZ0GlSdE9zEa2+0ylfoadmVCDk3qc2
 xzBcc7vkSGhswjK0e5LlRNlH4KXT5TkwWciEg5GvowL2ja9bsL2uRDFqxpmkEZkt
 mdkH4gpW1GGkRQpAwYSuWnWEHqoGQv7R7SSayAhBmXdcTf0Gibs=
 =SKzT
 -----END PGP SIGNATURE-----

Merge tag 'libnvdimm-fixes-4.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dave Jiang:

 - ensure that a variable passed in by reference to acpi_nfit_ctl is
   always set to a value. An incremental patch is provided due to notice
   from testing in -next. The rest of the commits did not exhibit
   issues.

 - fix a return path in nsio_rw_bytes() that was not returning "bytes
   remain" as expected for the function.

 - address an issue where applications polling on scrub-completion for
   the NVDIMM may falsely wakeup and read the wrong state value and
   cause hang.

 - change the test unit persistent capability attribute to fix up a
   broken assumption in the unit test infrastructure wrt the
   'write_cache' attribute

 - ratelimit dev_info() in the dax device check_vma() function since
   this is easily triggered from userspace

* tag 'libnvdimm-fixes-4.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  nfit: fix unchecked dereference in acpi_nfit_ctl
  acpi, nfit: Fix scrub idle detection
  tools/testing/nvdimm: advertise a write cache for nfit_test
  acpi/nfit: fix cmd_rc for acpi_nfit_ctl to always return a value
  dev-dax: check_vma: ratelimit dev_info-s
  libnvdimm, pmem: Fix memcpy_mcsafe() return code handling in nsio_rw_bytes()
2018-07-13 10:54:01 -07:00
Alexandre Belloni
fd6792bb02 rtc: fix alarm read and set offset
The offset needs to be added after reading the alarm value.

It also needs to be subtracted after the now < alarm test.

Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-07-13 10:37:54 +02:00
Juergen Gross
0ce0bba4e5 xen: setup pv irq ops vector earlier
Setting pv_irq_ops for Xen PV domains should be done as early as
possible in order to support e.g. very early printk() usage.

The same applies to xen_vcpu_info_reset(0), as it is needed for the
pv irq ops.

Move the call of xen_setup_machphys_mapping() after initializing the
pv functions as it contains a WARN_ON(), too.

Remove the no longer necessary conditional in xen_init_irq_ops()
from PVH V1 times to make clear this is a PV only function.

Cc: <stable@vger.kernel.org> # 4.14
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
2018-07-13 08:23:27 +02:00
Joel Fernandes (Google)
f8494fa3dd tracing: Reorder display of TGID to be after PID
Currently ftrace displays data in trace output like so:

                                       _-----=> irqs-off
                                      / _----=> need-resched
                                     | / _---=> hardirq/softirq
                                     || / _--=> preempt-depth
                                     ||| /     delay
            TASK-PID   CPU    TGID   ||||    TIMESTAMP  FUNCTION
               | |       |      |    ||||       |         |
            bash-1091  [000] ( 1091) d..2    28.313544: sched_switch:

However Android's trace visualization tools expect a slightly different
format due to an out-of-tree patch patch that was been carried for a
decade, notice that the TGID and CPU fields are reversed:

                                       _-----=> irqs-off
                                      / _----=> need-resched
                                     | / _---=> hardirq/softirq
                                     || / _--=> preempt-depth
                                     ||| /     delay
            TASK-PID    TGID   CPU   ||||    TIMESTAMP  FUNCTION
               | |        |      |   ||||       |         |
            bash-1091  ( 1091) [002] d..2    64.965177: sched_switch:

From kernel v4.13 onwards, during which TGID was introduced, tracing
with systrace on all Android kernels will break (most Android kernels
have been on 4.9 with Android patches, so this issues hasn't been seen
yet). From v4.13 onwards things will break.

The chrome browser's tracing tools also embed the systrace viewer which
uses the legacy TGID format and updates to that are known to be
difficult to make.

Considering this, I suggest we make this change to the upstream kernel
and backport it to all Android kernels. I believe this feature is merged
recently enough into the upstream kernel that it shouldn't be a problem.
Also logically, IMO it makes more sense to group the TGID with the
TASK-PID and the CPU after these.

Link: http://lkml.kernel.org/r/20180626000822.113931-1-joel@joelfernandes.org

Cc: jreck@google.com
Cc: tkjos@google.com
Cc: stable@vger.kernel.org
Fixes: 441dae8f2f ("tracing: Add support for display of tgid in trace output")
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2018-07-12 19:56:25 -04:00
Wolfram Sang
abe41184ab i2c: recovery: if possible send STOP with recovery pulses
I2C clients may misunderstand recovery pulses if they can't read SDA to
bail out early. In the worst case, as a write operation. To avoid that
and if we can write SDA, try to send STOP to avoid the
misinterpretation.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
2018-07-12 23:38:18 +02:00