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Commit Graph

752766 Commits

Author SHA1 Message Date
Mimi Zohar
f1b08bbcbd ima: define a new policy condition based on the filesystem name
If/when file data signatures are distributed with the file data, this
patch will not be needed.  In the current environment where only some
files are signed, the ability to differentiate between file systems is
needed.  Some file systems consider the file system magic number
internal to the file system.

This patch defines a new IMA policy condition named "fsname", based on
the superblock's file_system_type (sb->s_type) name. This allows policy
rules to be expressed in terms of the filesystem name.

The following sample rules require file signatures on rootfs files
executed or mmap'ed.

appraise func=BPRM_CHECK fsname=rootfs appraise_type=imasig
appraise func=FILE_MMAP fsname=rootfs appraise_type=imasig

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Theodore Ts'o <tytso@mit.edu>
2018-05-22 07:33:53 -04:00
Matthew Garrett
fa516b66a1 EVM: Allow runtime modification of the set of verified xattrs
Sites may wish to provide additional metadata alongside files in order
to make more fine-grained security decisions[1]. The security of this is
enhanced if this metadata is protected, something that EVM makes
possible. However, the kernel cannot know about the set of extended
attributes that local admins may wish to protect, and hardcoding this
policy in the kernel makes it difficult to change over time and less
convenient for distributions to enable.

This patch adds a new /sys/kernel/security/integrity/evm/evm_xattrs node,
which can be read to obtain the current set of EVM-protected extended
attributes or written to in order to add new entries. Extending this list
will not change the validity of any existing signatures provided that the
file in question does not have any of the additional extended attributes -
missing xattrs are skipped when calculating the EVM hash.

[1] For instance, a package manager could install information about the
package uploader in an additional extended attribute. Local LSM policy
could then be associated with that extended attribute in order to
restrict the privileges available to packages from less trusted
uploaders.

Signed-off-by: Matthew Garrett <mjg59@google.com>
Reviewed-by: James Morris <james.morris@microsoft.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2018-05-18 15:34:45 -04:00
Matthew Garrett
21af766314 EVM: turn evm_config_xattrnames into a list
Use a list of xattrs rather than an array - this makes it easier to
extend the list at runtime.

Signed-off-by: Matthew Garrett <mjg59@google.com>
Reviewed-by: James Morris <james.morris@microsoft.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2018-05-18 15:34:36 -04:00
Matthew Garrett
0c343af806 integrity: Add an integrity directory in securityfs
We want to add additional evm control nodes, and it'd be preferable not
to clutter up the securityfs root directory any further. Create a new
integrity directory, move the ima directory into it, create an evm
directory for the evm attribute and add compatibility symlinks.

Signed-off-by: Matthew Garrett <mjg59@google.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2018-05-17 08:03:07 -04:00
Petr Vorel
4ecd9934ba ima: Remove unused variable ima_initialized
Commit a756024 ("ima: added ima_policy_flag variable") replaced
ima_initialized with ima_policy_flag, but didn't remove ima_initialized.
This patch removes it.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: James Morris <james.morris@microsoft.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2018-05-17 08:03:06 -04:00
Petr Vorel
de636769c8 ima: Unify logging
Define pr_fmt everywhere.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>  (powerpc build error)
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>

Changelog:
Previous pr_fmt definition was too late and caused problems in powerpc
allyesconfg build.
2018-05-17 07:49:12 -04:00
Petr Vorel
ffb122de9a ima: Reflect correct permissions for policy
Kernel configured as CONFIG_IMA_READ_POLICY=y && CONFIG_IMA_WRITE_POLICY=n
keeps 0600 mode after loading policy. Remove write permission to state
that policy file no longer be written.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2018-05-17 07:47:17 -04:00
Tycho Andersen
890e2abe10 dh key: get rid of stack allocated array for zeroes
We're interested in getting rid of all of the stack allocated arrays in
the kernel: https://lkml.org/lkml/2018/3/7/621

This case is interesting, since we really just need an array of bytes that
are zero. The loop already ensures that if the array isn't exactly the
right size that enough zero bytes will be copied in. So, instead of
choosing this value to be the size of the hash, let's just choose it to be
32, since that is a common size, is not too big, and will not result in too
many extra iterations of the loop.

v2: split out from other patch, just hardcode array size instead of
    dynamically allocating something the right size
v3: fix typo of 256 -> 32

Signed-off-by: Tycho Andersen <tycho@tycho.ws>
Reviewed-by: Kees Cook <keescook@chromium.org>
CC: David Howells <dhowells@redhat.com>
CC: James Morris <jmorris@namei.org>
CC: "Serge E. Hallyn" <serge@hallyn.com>
CC: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2018-05-11 13:07:49 -07:00
Tycho Andersen
383203eff7 dh key: get rid of stack allocated array
We're interested in getting rid of all of the stack allocated arrays in the
kernel: https://lkml.org/lkml/2018/3/7/621

This particular vla is used as a temporary output buffer in case there is
too much hash output for the destination buffer. Instead, let's just
allocate a buffer that's big enough initially, but only copy back to
userspace the amount that was originally asked for.

v2: allocate enough in the original output buffer vs creating a temporary
    output buffer

Signed-off-by: Tycho Andersen <tycho@tycho.ws>
Reviewed-by: Kees Cook <keescook@chromium.org>
CC: David Howells <dhowells@redhat.com>
CC: James Morris <jmorris@namei.org>
CC: "Serge E. Hallyn" <serge@hallyn.com>
CC: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2018-05-11 13:07:47 -07:00
Tycho Andersen
a964f39561 big key: get rid of stack array allocation
We're interested in getting rid of all of the stack allocated arrays in the
kernel [1]. This patch simply hardcodes the iv length to match that of the
hardcoded cipher.

[1]: https://lkml.org/lkml/2018/3/7/621

v2: hardcode the length of the nonce to be the GCM AES IV length, and do a
    sanity check in init(), Eric Biggers
v3: * remember to free big_key_aead when sanity check fails
    * define a constant for big key IV size so it can be changed along side
      the algorithm in the code

Signed-off-by: Tycho Andersen <tycho@tycho.ws>
Reviewed-by: Kees Cook <keescook@chromium.org>
CC: David Howells <dhowells@redhat.com>
CC: James Morris <jmorris@namei.org>
CC: "Serge E. Hallyn" <serge@hallyn.com>
CC: Jason A. Donenfeld <Jason@zx2c4.com>
CC: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2018-05-11 13:07:45 -07:00
Tom Gundersen
5859cdf550 smack: provide socketpair callback
Make sure to implement the new socketpair callback so the SO_PEERSEC
call on socketpair(2)s will return correct information.

Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2018-05-04 12:48:54 -07:00
David Herrmann
0b811db2cb selinux: provide socketpair callback
Make sure to implement the new socketpair callback so the SO_PEERSEC
call on socketpair(2)s will return correct information.

Acked-by: Serge Hallyn <serge@hallyn.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2018-05-04 12:48:54 -07:00
David Herrmann
d47cd9450d net: hook socketpair() into LSM
Use the newly created LSM-hook for socketpair(). The default hook
return-value is 0, so behavior stays the same unless LSMs start using
this hook.

Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Morris <james.morris@microsoft.com>
2018-05-04 12:48:54 -07:00
David Herrmann
aae7cfcbb7 security: add hook for socketpair()
Right now the LSM labels for socketpairs are always uninitialized,
since there is no security hook for the socketpair() syscall. This
patch adds the required hooks so LSMs can properly label socketpairs.
This allows SO_PEERSEC to return useful information on those sockets.

Note that the behavior of socketpair() can be emulated by creating a
listener socket, connecting to it, and then discarding the initial
listener socket. With this workaround, SO_PEERSEC would return the
caller's security context. However, with socketpair(), the uninitialized
context is returned unconditionally. This is unexpected and makes
socketpair() less useful in situations where the security context is
crucial to the application.

With the new socketpair-hook this disparity can be solved by making
socketpair() return the expected security context.

Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
2018-05-04 12:48:54 -07:00
James Morris
b3859ee18e Linux v4.17-rc3
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Merge tag 'v4.17-rc3' into next-general

Merge to Linux v4.17-rc3 which has stability bugfix.
2018-05-01 11:02:34 -07:00
Linus Torvalds
6da6c0db53 Linux v4.17-rc3 2018-04-29 14:17:42 -07:00
Linus Torvalds
c61a56abab Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
 "Another set of x86 related updates:

   - Fix the long broken x32 version of the IPC user space headers which
     was noticed by Arnd Bergman in course of his ongoing y2038 work.
     GLIBC seems to have non broken private copies of these headers so
     this went unnoticed.

   - Two microcode fixlets which address some more fallout from the
     recent modifications in that area:

      - Unconditionally save the microcode patch, which was only saved
        when CPU_HOTPLUG was enabled causing failures in the late
        loading mechanism

      - Make the later loader synchronization finally work under all
        circumstances. It was exiting early and causing timeout failures
        due to a missing synchronization point.

   - Do not use mwait_play_dead() on AMD systems to prevent excessive
     power consumption as the CPU cannot go into deep power states from
     there.

   - Address an annoying sparse warning due to lost type qualifiers of
     the vmemmap and vmalloc base address constants.

   - Prevent reserving crash kernel region on Xen PV as this leads to
     the wrong perception that crash kernels actually work there which
     is not the case. Xen PV has its own crash mechanism handled by the
     hypervisor.

   - Add missing TLB cpuid values to the table to make the printout on
     certain machines correct.

   - Enumerate the new CLDEMOTE instruction

   - Fix an incorrect SPDX identifier

   - Remove stale macros"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds
  x86/setup: Do not reserve a crash kernel region if booted on Xen PV
  x86/cpu/intel: Add missing TLB cpuid values
  x86/smpboot: Don't use mwait_play_dead() on AMD systems
  x86/mm: Make vmemmap and vmalloc base address constants unsigned long
  x86/vector: Remove the unused macro FPU_IRQ
  x86/vector: Remove the macro VECTOR_OFFSET_START
  x86/cpufeatures: Enumerate cldemote instruction
  x86/microcode: Do not exit early from __reload_late()
  x86/microcode/intel: Save microcode patch unconditionally
  x86/jailhouse: Fix incorrect SPDX identifier
2018-04-29 10:06:05 -07:00
Linus Torvalds
65f4d6d0f8 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 pti fixes from Thomas Gleixner:
 "A set of updates for the x86/pti related code:

   - Preserve r8-r11 in int $0x80. r8-r11 need to be preserved, but the
     int$80 entry code removed that quite some time ago. Make it correct
     again.

   - A set of fixes for the Global Bit work which went into 4.17 and
     caused a bunch of interesting regressions:

      - Triggering a BUG in the page attribute code due to a missing
        check for early boot stage

      - Warnings in the page attribute code about holes in the kernel
        text mapping which are caused by the freeing of the init code.
        Handle such holes gracefully.

      - Reduce the amount of kernel memory which is set global to the
        actual text and do not incidentally overlap with data.

      - Disable the global bit when RANDSTRUCT is enabled as it
        partially defeats the hardening.

      - Make the page protection setup correct for vma->page_prot
        population again. The adjustment of the protections fell through
        the crack during the Global bit rework and triggers warnings on
        machines which do not support certain features, e.g. NX"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/entry/64/compat: Preserve r8-r11 in int $0x80
  x86/pti: Filter at vma->vm_page_prot population
  x86/pti: Disallow global kernel text with RANDSTRUCT
  x86/pti: Reduce amount of kernel text allowed to be Global
  x86/pti: Fix boot warning from Global-bit setting
  x86/pti: Fix boot problems from Global-bit setting
2018-04-29 09:36:22 -07:00
Linus Torvalds
810fb07a9b Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
 "Two fixes from the timer departement:

   - Fix a long standing issue in the NOHZ tick code which causes RB
     tree corruption, delayed timers and other malfunctions. The cause
     for this is code which modifies the expiry time of an enqueued
     hrtimer.

   - Revert the CLOCK_MONOTONIC/CLOCK_BOOTTIME unification due to
     regression reports. Seems userspace _is_ relying on the documented
     behaviour despite our hope that it wont"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert: Unify CLOCK_MONOTONIC and CLOCK_BOOTTIME
  tick/sched: Do not mess with an enqueued hrtimer
2018-04-29 09:03:25 -07:00
Linus Torvalds
7d9e55feae Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
 "The perf update contains the following bits:

  x86:
   - Prevent setting freeze_on_smi on PerfMon V1 CPUs to avoid #GP

  perf stat:
   - Keep the '/' event modifier separator in fallback, for example when
     fallbacking from 'cpu/cpu-cycles/' to user level only, where it
     should become 'cpu/cpu-cycles/u' and not 'cpu/cpu-cycles/:u' (Jiri
     Olsa)

   - Fix PMU events parsing rule, improving error reporting for invalid
     events (Jiri Olsa)

   - Disable write_backward and other event attributes for !group events
     in a group, fixing, for instance this group: '{cycles,msr/aperf/}:S'
     that has leader sampling (:S) and where just the 'cycles', the
     leader event, should have the write_backward attribute set, in this
     case it all fails because the PMU where 'msr/aperf/' lives doesn't
     accepts write_backward style sampling (Jiri Olsa)

   - Only fall back group read for leader (Kan Liang)

   - Fix core PMU alias list for x86 platform (Kan Liang)

   - Print out hint for mixed PMU group error (Kan Liang)

   - Fix duplicate PMU name for interval print (Kan Liang)

  Core:
   - Set main kernel end address properly when reading kernel and module
     maps (Namhyung Kim)

  perf mem:
   - Fix incorrect entries and add missing man options (Sangwon Hong)

  s/390:
   - Remove s390 specific strcmp_cpuid_cmp function (Thomas Richter)

   - Adapt 'perf test' case record+probe_libc_inet_pton.sh for s390

   - Fix s390 undefined record__auxtrace_init() return value in 'perf
     record' (Thomas Richter)"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Don't enable freeze-on-smi for PerfMon V1
  perf stat: Fix duplicate PMU name for interval print
  perf evsel: Only fall back group read for leader
  perf stat: Print out hint for mixed PMU group error
  perf pmu: Fix core PMU alias list for X86 platform
  perf record: Fix s390 undefined record__auxtrace_init() return value
  perf mem: Document incorrect and missing options
  perf evsel: Disable write_backward for leader sampling group events
  perf pmu: Fix pmu events parsing rule
  perf stat: Keep the / modifier separator in fallback
  perf test: Adapt test case record+probe_libc_inet_pton.sh for s390
  perf list: Remove s390 specific strcmp_cpuid_cmp function
  perf machine: Set main kernel end address properly
2018-04-29 08:58:50 -07:00
Linus Torvalds
cdface5209 Fix misc. bugs and a regression for ext4.
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Merge tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "Fix misc bugs and a regression for ext4"

* tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: add MODULE_SOFTDEP to ensure crc32c is included in the initramfs
  ext4: fix bitmap position validation
  ext4: set h_journal if there is a failure starting a reserved handle
  ext4: prevent right-shifting extents beyond EXT_MAX_BLOCKS
2018-04-28 20:07:21 -07:00
Amir Goldstein
19b9ad6731 <linux/stringhash.h>: fix end_name_hash() for 64bit long
The comment claims that this helper will try not to loose bits, but for
64bit long it looses the high bits before hashing 64bit long into 32bit
int.  Use the helper hash_long() to do the right thing for 64bit long.
For 32bit long, there is no change.

All the callers of end_name_hash() either assign the result to
qstr->hash, which is u32 or return the result as an int value (e.g.
full_name_hash()).  Change the helper return type to int to conform to
its users.

[ It took me a while to apply this, because my initial reaction to it
  was - incorrectly - that it could make for slower code.

  After having looked more at it, I take back all my complaints about
  the patch, Amir was right and I was mis-reading things or just being
  stupid.

  I also don't worry too much about the possible performance impact of
  this on 64-bit, since most architectures that actually care about
  performance end up not using this very much (the dcache code is the
  most performance-critical, but the word-at-a-time case uses its own
  hashing anyway).

  So this ends up being mostly used for filesystems that do their own
  degraded hashing (usually because they want a case-insensitive
  comparison function).

  A _tiny_ worry remains, in that not everybody uses DCACHE_WORD_ACCESS,
  and then this potentially makes things more expensive on 64-bit
  architectures with slow or lacking multipliers even for the normal
  case.

  That said, realistically the only such architecture I can think of is
  PA-RISC. Nobody really cares about performance on that, it's more of a
  "look ma, I've got warts^W an odd machine" platform.

  So the patch is fine, and all my initial worries were just misplaced
  from not looking at this properly.   - Linus ]

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-28 15:01:14 -07:00
David Sterba
bf8f5de174 MAINTAINERS: add myself as maintainer of AFFS
The AFFS filesystem is still in use by m68k community (Link #2), but as
there was no code activity and no maintainer, the filesystem appeared on
the list of candidates for staging/removal (Link #1).

I volunteer to act as a maintainer of AFFS to collect any fixes that
might show up and to guard fs/affs/ against another spring cleaning.

Link: https://lkml.kernel.org/r/20180425154602.GA8546@bombadil.infradead.org
Link: https://lkml.kernel.org/r/1613268.lKBQxPXt8J@merkaba
CC: Martin Steigerwald <martin@lichtvoll.de>
CC: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-28 10:30:47 -07:00
Linus Torvalds
a97d8efd9d Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:

 - two driver fixes

 - better parameter check for the core

 - Documentation updates

 - part of a tree-wide HAS_DMA cleanup

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: sprd: Fix the i2c count issue
  i2c: sprd: Prevent i2c accesses after suspend is called
  i2c: dev: prevent ZERO_SIZE_PTR deref in i2cdev_ioctl_rdwr()
  Documentation/i2c: adopt kernel commenting style in examples
  Documentation/i2c: sync docs with current state of i2c-tools
  Documentation/i2c: whitespace cleanup
  i2c: Remove depends on HAS_DMA in case of platform dependency
2018-04-28 10:06:16 -07:00
Linus Torvalds
6e041ffcc2 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:

 - crypto API regression that may cause sporadic alloc failures

 - double-free bug in drbg

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: drbg - set freed buffers to NULL
  crypto: api - fix finding algorithm currently being tested
2018-04-28 10:02:44 -07:00
Linus Torvalds
cac264288a Security fixes for SMB3 for 4.17-rc3
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Merge tag '4.17-rc2-smb3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "A few security related fixes for SMB3, most importantly for SMB3.11
  encryption"

* tag '4.17-rc2-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: smbd: Avoid allocating iov on the stack
  cifs: smbd: Don't use RDMA read/write when signing is used
  SMB311: Fix reconnect
  SMB3: Fix 3.11 encryption to Windows and handle encrypted smb3 tcon
  CIFS: set *resp_buf_type to NO_BUFFER on error
2018-04-28 09:51:56 -07:00
Linus Torvalds
0d95cfa922 powerpc fixes for 4.17 #4
A bunch of fixes, mostly for existing code and going to stable.
 
 Our memory hot-unplug path wasn't flushing the cache before removing memory.
 That is a problem now that we are doing memory hotplug on bare metal.
 
 Three fixes for the NPU code that supports devices connected via NVLink (ie.
 GPUs). The main one tweaks the TLB flush algorithm to avoid soft lockups for
 large flushes.
 
 A fix for our memory error handling where we would loop infinitely, returning
 back to the bad access and hard lockup the CPU.
 
 Fixes for the OPAL RTC driver, which wasn't handling some error cases correctly.
 
 A fix for a hardlockup in the powernv cpufreq driver.
 
 And finally two fixes to our smp_send_stop(), required due to a recent change to
 use it on shutdown.
 
 Thanks to:
   Alistair Popple, Balbir Singh, Laurentiu Tudor, Mahesh Salgaonkar, Mark
   Hairgrove, Nicholas Piggin, Rashmica Gupta, Shilpasri G Bhat.
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Merge tag 'powerpc-4.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "A bunch of fixes, mostly for existing code and going to stable.

  Our memory hot-unplug path wasn't flushing the cache before removing
  memory. That is a problem now that we are doing memory hotplug on bare
  metal.

  Three fixes for the NPU code that supports devices connected via
  NVLink (ie. GPUs). The main one tweaks the TLB flush algorithm to
  avoid soft lockups for large flushes.

  A fix for our memory error handling where we would loop infinitely,
  returning back to the bad access and hard lockup the CPU.

  Fixes for the OPAL RTC driver, which wasn't handling some error cases
  correctly.

  A fix for a hardlockup in the powernv cpufreq driver.

  And finally two fixes to our smp_send_stop(), required due to a recent
  change to use it on shutdown.

  Thanks to: Alistair Popple, Balbir Singh, Laurentiu Tudor, Mahesh
  Salgaonkar, Mark Hairgrove, Nicholas Piggin, Rashmica Gupta, Shilpasri
  G Bhat"

* tag 'powerpc-4.17-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/kvm/booke: Fix altivec related build break
  powerpc: Fix deadlock with multiple calls to smp_send_stop
  cpufreq: powernv: Fix hardlockup due to synchronous smp_call in timer interrupt
  powerpc: Fix smp_send_stop NMI IPI handling
  rtc: opal: Fix OPAL RTC driver OPAL_BUSY loops
  powerpc/mce: Fix a bug where mce loops on memory UE.
  powerpc/powernv/npu: Do a PID GPU TLB flush when invalidating a large address range
  powerpc/powernv/npu: Prevent overwriting of pnv_npu2_init_contex() callback parameters
  powerpc/powernv/npu: Add lock to prevent race in concurrent context init/destroy
  powerpc/powernv/memtrace: Let the arch hotunplug code flush cache
  powerpc/mm: Flush cache on memory hot(un)plug
2018-04-28 09:45:34 -07:00
Linus Torvalds
46dc111dfe KVM fixes for v4.17-rc3
ARM:
  - PSCI selection API, a leftover from 4.16 (for stable)
  - Kick vcpu on active interrupt affinity change
  - Plug a VMID allocation race on oversubscribed systems
  - Silence debug messages
  - Update Christoffer's email address (linaro -> arm)
 
 x86:
  - Expose userspace-relevant bits of a newly added feature
  - Fix TLB flushing on VMX with VPID, but without EPT
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rMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "ARM:
   - PSCI selection API, a leftover from 4.16 (for stable)
   - Kick vcpu on active interrupt affinity change
   - Plug a VMID allocation race on oversubscribed systems
   - Silence debug messages
   - Update Christoffer's email address (linaro -> arm)

  x86:
   - Expose userspace-relevant bits of a newly added feature
   - Fix TLB flushing on VMX with VPID, but without EPT"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  x86/headers/UAPI: Move DISABLE_EXITS KVM capability bits to the UAPI
  kvm: apic: Flush TLB after APIC mode/address change if VPIDs are in use
  arm/arm64: KVM: Add PSCI version selection API
  KVM: arm/arm64: vgic: Kick new VCPU on interrupt migration
  arm64: KVM: Demote SVE and LORegion warnings to debug only
  MAINTAINERS: Update e-mail address for Christoffer Dall
  KVM: arm/arm64: Close VMID generation race
2018-04-27 16:13:31 -07:00
Linus Torvalds
19b522dbad arm64 fixes:
- Close some potential spectre-v1 vulnerabilities found by smatch
 
 - Add missing list sentinel for CPUs that don't require KPTI
 
 - Removal of unused 'addr' parameter for I/D cache coherency
 
 - Removal of redundant set_fs(KERNEL_DS) calls in ptrace
 
 - Fix single-stepping state machine handling in response to kernel traps
 
 - Clang support for 128-bit integers
 
 - Avoid instrumenting our out-of-line atomics in preparation for enabling
   LSE atomics by default in 4.18
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Nothing too bad, but the spectre updates to smatch identified a few
  places that may need sanitising so we've got those covered.

  Details:

   - Close some potential spectre-v1 vulnerabilities found by smatch

   - Add missing list sentinel for CPUs that don't require KPTI

   - Removal of unused 'addr' parameter for I/D cache coherency

   - Removal of redundant set_fs(KERNEL_DS) calls in ptrace

   - Fix single-stepping state machine handling in response to kernel
     traps

   - Clang support for 128-bit integers

   - Avoid instrumenting our out-of-line atomics in preparation for
     enabling LSE atomics by default in 4.18"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: avoid instrumenting atomic_ll_sc.o
  KVM: arm/arm64: vgic: fix possible spectre-v1 in vgic_mmio_read_apr()
  KVM: arm/arm64: vgic: fix possible spectre-v1 in vgic_get_irq()
  arm64: fix possible spectre-v1 in ptrace_hbp_get_event()
  arm64: support __int128 with clang
  arm64: only advance singlestep for user instruction traps
  arm64/kernel: rename module_emit_adrp_veneer->module_emit_veneer_for_adrp
  arm64: ptrace: remove addr_limit manipulation
  arm64: mm: drop addr parameter from sync icache and dcache
  arm64: add sentinel to kpti_safe_list
2018-04-27 11:14:25 -07:00
Linus Torvalds
7b87308e71 Modules fix for v4.17-rc3
- Fix display of module section addresses in sysfs, which were getting
 hashed with %pK and breaking tools like perf.
 
 Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull modules fix from Jessica Yu:
 "Fix display of module section addresses in sysfs, which were getting
  hashed with %pK and breaking tools like perf"

* tag 'modules-for-v4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module: Fix display of wrong module .text address
2018-04-27 11:01:21 -07:00
Linus Torvalds
64ebe3126c A CephFS quota follow-up and fixes for two older issues in the
messenger layer, marked for stable.
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Merge tag 'ceph-for-4.17-rc3' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "A CephFS quota follow-up and fixes for two older issues in the
  messenger layer, marked for stable"

* tag 'ceph-for-4.17-rc3' of git://github.com/ceph/ceph-client:
  libceph: validate con->state at the top of try_write()
  libceph: reschedule a tick in finish_hunting()
  libceph: un-backoff on tick when we have a authenticated session
  ceph: check if mds create snaprealm when setting quota
2018-04-27 10:56:29 -07:00
Linus Torvalds
d8a332730e Char/Misc driver fixes for 4.17-rc3
Here are some small char and misc driver fixes for 4.17-rc3
 
 A variety of small things that have fallen out after 4.17-rc1 was out.
 Some vboxguest fixes for systems with lots of memory, amba bus fixes,
 some MAINTAINERS updates, uio_hv_generic driver fixes, and a few other
 minor things that resolve problems that people reported.
 
 The amba bus fixes took twice to get right, the first time I messed up
 applying the patches in the wrong order, hence the revert and later
 addition again with the correct fix, sorry about that.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small char and misc driver fixes for 4.17-rc3

  A variety of small things that have fallen out after 4.17-rc1 was out.
  Some vboxguest fixes for systems with lots of memory, amba bus fixes,
  some MAINTAINERS updates, uio_hv_generic driver fixes, and a few other
  minor things that resolve problems that people reported.

  The amba bus fixes took twice to get right, the first time I messed up
  applying the patches in the wrong order, hence the revert and later
  addition again with the correct fix, sorry about that.

  All of these have been in linux-next with no reported issues"

* tag 'char-misc-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  ARM: amba: Fix race condition with driver_override
  ARM: amba: Make driver_override output consistent with other buses
  Revert "ARM: amba: Fix race condition with driver_override"
  ARM: amba: Don't read past the end of sysfs "driver_override" buffer
  ARM: amba: Fix race condition with driver_override
  virt: vbox: Log an error when we fail to get the host version
  virt: vbox: Use __get_free_pages instead of kmalloc for DMA32 memory
  virt: vbox: Add vbg_req_free() helper function
  virt: vbox: Move declarations of vboxguest private functions to private header
  slimbus: Fix out-of-bounds access in slim_slicesize()
  MAINTAINERS: add dri-devel&linaro-mm for Android ION
  fpga-manager: altera-ps-spi: preserve nCONFIG state
  MAINTAINERS: update my email address
  uio_hv_generic: fix subchannel ring mmap
  uio_hv_generic: use correct channel in isr
  uio_hv_generic: make ring buffer attribute for primary channel
  uio_hv_generic: set size of ring buffer attribute
  ANDROID: binder: prevent transactions into own process.
2018-04-27 10:39:38 -07:00
Linus Torvalds
ee3748be5c Driver core fixes for 4.17-rc3
Here are some small driver core and firmware fixes for 4.17-rc3
 
 There's a kobject WARN() removal to make syzkaller a lot happier about
 some "normal" error paths that it keeps hitting, which should reduce the
 number of false-positives we have been getting recently.
 
 There's also some fimware test and documentation fixes, and the
 coredump() function signature change that needed to happen after -rc1
 before drivers started to take advantage of it.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg Kroah-Hartman:
 "Here are some small driver core and firmware fixes for 4.17-rc3

  There's a kobject WARN() removal to make syzkaller a lot happier about
  some "normal" error paths that it keeps hitting, which should reduce
  the number of false-positives we have been getting recently.

  There's also some fimware test and documentation fixes, and the
  coredump() function signature change that needed to happen after -rc1
  before drivers started to take advantage of it.

  All of these have been in linux-next with no reported issues"

* tag 'driver-core-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  firmware: some documentation fixes
  selftests:firmware: fixes a call to a wrong function name
  kobject: don't use WARN for registration failures
  firmware: Fix firmware documentation for recent file renames
  test_firmware: fix setting old custom fw path back on exit, second try
  test_firmware: Install all scripts
  drivers: change struct device_driver::coredump() return type to void
2018-04-27 10:12:20 -07:00
Linus Torvalds
b52c85a7b7 TTY/Serial fixes for 4.17-rc3
Here are some tty and serial driver fixes for reported issues for
 4.17-rc3.
 
 Nothing major, but a number of small things:
 	- device tree fixes/updates for serial ports
 	- earlycon fixes
 	- n_gsm fixes
 	- tty core change reverted to help resolve syszkaller reports
 	- other serial driver small fixes
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some tty and serial driver fixes for reported issues for
  4.17-rc3.

  Nothing major, but a number of small things:

   - device tree fixes/updates for serial ports

   - earlycon fixes

   - n_gsm fixes

   - tty core change reverted to help resolve syszkaller reports

   - other serial driver small fixes

  All of these have been in linux-next with no reported issues"

* tag 'tty-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: Use __GFP_NOFAIL for tty_ldisc_get()
  tty: serial: xuartps: Setup early console when uartclk is also passed
  tty: Don't call panic() at tty_ldisc_init()
  tty: Avoid possible error pointer dereference at tty_ldisc_restore().
  dt-bindings: mvebu-uart: DT fix s/interrupts-names/interrupt-names/
  tty: serial: qcom_geni_serial: Use signed variable to get IRQ
  earlycon: Use a pointer table to fix __earlycon_table stride
  serial: sh-sci: Document r8a77470 bindings
  dt-bindings: meson-uart: DT fix s/clocks-names/clock-names/
  serial: imx: fix cached UCR2 read on software reset
  serial: imx: warn user when using unsupported configuration
  serial: mvebu-uart: Fix local flags handling on termios update
  tty: n_gsm: Fix DLCI handling for ADM mode if debug & 2 is not set
  tty: n_gsm: Fix long delays with control frame timeouts in ADM mode
2018-04-27 10:03:38 -07:00
KarimAllah Ahmed
5e62493f1a x86/headers/UAPI: Move DISABLE_EXITS KVM capability bits to the UAPI
Move DISABLE_EXITS KVM capability bits to the UAPI just like the rest of
capabilities.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: x86@kernel.org
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2018-04-27 18:37:17 +02:00
Linus Torvalds
79a17dd9d2 Staging fixes for 4.17-rc3
Here are 2 staging driver fixups for 4.17-rc3.
 
 The first is the remaining stragglers of the irda code removal that you
 pointed out during the merge window.  The second is a fix for the
 wilc1000 driver due to a patch that got merged in 4.17-rc1.
 
 Both of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are two staging driver fixups for 4.17-rc3.

  The first is the remaining stragglers of the irda code removal that
  you pointed out during the merge window. The second is a fix for the
  wilc1000 driver due to a patch that got merged in 4.17-rc1.

  Both of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: wilc1000: fix NULL pointer exception in host_int_parse_assoc_resp_info()
  staging: irda: remove remaining remants of irda code removal
2018-04-27 09:37:12 -07:00
Linus Torvalds
1993cbf06a USB fixes for 4.17-rc3
Here are a number of USB driver fixes for reported problems for
 4.17-rc3.
 
 The "largest" here is a number of phy core changes for reported problems
 with the -rc1 release.  There's also the usual musb and xhci fixes, as
 well as new device id updates.  There are also some usbip fixes for
 reported problems as more people start to use that code with containers.
 
 All of these have been in linux-next with no reported issues, except the
 last few new device ids, which are "obviously correct" :)
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of USB driver fixes for reported problems for
  4.17-rc3.

  The "largest" here is a number of phy core changes for reported
  problems with the -rc1 release. There's also the usual musb and xhci
  fixes, as well as new device id updates. There are also some usbip
  fixes for reported problems as more people start to use that code with
  containers.

  All of these have been in linux-next with no reported issues, except
  the last few new device ids, which are "obviously correct" :)"

* tag 'usb-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
  USB: musb: dsps: drop duplicate phy initialisation
  USB: musb: host: prevent core phy initialisation
  usb: core: phy: add the SPDX-License-Identifier and include guard
  xhci: Fix Kernel oops in xhci dbgtty
  usb: select USB_COMMON for usb role switch config
  usb: core: phy: add missing forward declaration for "struct device"
  usb: core: phy: make it a no-op if CONFIG_GENERIC_PHY is disabled
  usb: core: use phy_exit during suspend if wake up is not supported
  usb: core: split usb_phy_roothub_{init,alloc}
  usb: core: phy: fix return value of usb_phy_roothub_exit()
  usb: typec: ucsi: Increase command completion timeout value
  Revert "xhci: plat: Register shutdown for xhci_plat"
  usb: core: Add quirk for HP v222w 16GB Mini
  Documentation: typec.rst: Use literal-block element with ascii art
  usb: typec: ucsi: fix tracepoint related build error
  usbip: usbip_event: fix to not print kernel pointer address
  usbip: usbip_host: fix to hold parent lock for device_attach() calls
  usbip: vhci_hcd: Fix usb device and sockfd leaks
  usbip: vhci_hcd: check rhport before using in vhci_hub_control()
  USB: Increment wakeup count on remote wakeup.
  ...
2018-04-27 09:32:20 -07:00
Linus Torvalds
7ff5000268 sound fixes for 4.17-rc3
A significant amount of fixes have been piled up at this time.
 
 - Possible Spectre v1 coverage in OSS sequencer API, control API,
   HD-audio hwdep ioctl, ASIHPI hwdep ioctl, OPL3, and HDSPM/RME
   channel_info API.
 
 - A regression fix in PCM delay reporting that happened at the code
   refactoring for the set_fs() removal
 
 - The long-standing bug in PCM sync_ptr ioctl that missed the audio
   timestamp field
 
 - USB-audio regression fixes due to the recent UAC2 jack support
 
 - vm_fault_t conversions in a couple of places
 
 - ASoC topology API fixes
 
 - Assorted driver fixes:
   * ASoC rsnd, FSL, Intel SST, DMIC, AMD, ADAU17x1, Realtek codec
   * FireWire typo fix
   * HD-audio quirks and USB-audio Dell fixup
   * USB-audio UAC3 corrections
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Merge tag 'sound-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A significant amount of fixes have been piled up at this time.

   - Possible Spectre v1 coverage in OSS sequencer API, control API,
     HD-audio hwdep ioctl, ASIHPI hwdep ioctl, OPL3, and HDSPM/RME
     channel_info API.

   - A regression fix in PCM delay reporting that happened at the code
     refactoring for the set_fs() removal

   - The long-standing bug in PCM sync_ptr ioctl that missed the audio
     timestamp field

   - USB-audio regression fixes due to the recent UAC2 jack support

   - vm_fault_t conversions in a couple of places

   - ASoC topology API fixes

   - Assorted driver fixes:
      * ASoC rsnd, FSL, Intel SST, DMIC, AMD, ADAU17x1, Realtek codec
      * FireWire typo fix
      * HD-audio quirks and USB-audio Dell fixup
      * USB-audio UAC3 corrections"

* tag 'sound-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (35 commits)
  ALSA: dice: fix error path to destroy initialized stream data
  ALSA: hda - Skip jack and others for non-existing PCM streams
  ALSA: hda/realtek - change the location for one of two front mics
  ALSA: rme9652: Hardening for potential Spectre v1
  ALSA: hdspm: Hardening for potential Spectre v1
  ALSA: asihpi: Hardening for potential Spectre v1
  ALSA: opl3: Hardening for potential Spectre v1
  ALSA: hda: Hardening for potential Spectre v1
  ALSA: control: Hardening for potential Spectre v1
  ALSA: seq: oss: Hardening for potential Spectre v1
  ALSA: seq: oss: Fix unbalanced use lock for synth MIDI device
  ALSA: hda/realtek - Update ALC255 depop optimize
  ALSA: hda/realtek - Add some fixes for ALC233
  ALSA: pcm: Change return type to vm_fault_t
  ALSA: usx2y: Change return type to vm_fault_t
  ALSA: usb-audio: ADC3: Fix channel mapping conversion for ADC3.
  ALSA: dice: fix OUI for TC group
  ALSA: usb-audio: Skip broken EU on Dell dock USB-audio
  ALSA: usb-audio: Fix missing endian conversion
  ALSA: usb-audio: Fix forgotten conversion of control query functions
  ...
2018-04-27 09:29:18 -07:00
Linus Torvalds
ee7141c929 ARM: SoC fixes for 4.17
This round of fixes has two larger changes that came in last week:
 
 - A set of a couple of patches all intended to finally turn on
   USB support on various Amlogic SoC based boards. The respective
   driver were not finalized until very late before the merge window
   and the DT portion is the last bit now.
 - A defconfig update for gemini that had repeatedly missed the
   cut but that is required to actually boot any real machines
   with the default build.
 
 The rest are the usual small changes:
 
 - A fix for a nasty build regression on the OMAP memory drivers
 - A fix for a boot problem on Intel/Altera SocFPGA
 - A MAINTAINER file update
 - A couple of fixes for issues found by automated testing
   (kernelci, coverity, sparse, ...)
 - A few incorrect DT entries are updated to match the hardware
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This round of fixes has two larger changes that came in last week:

   - a couple of patches all intended to finally turn on USB support on
     various Amlogic SoC based boards. The respective driver were not
     finalized until very late before the merge window and the DT
     portion is the last bit now.

   - a defconfig update for gemini that had repeatedly missed the cut
     but that is required to actually boot any real machines with the
     default build.

  The rest are the usual small changes:

   - a fix for a nasty build regression on the OMAP memory drivers

   - a fix for a boot problem on Intel/Altera SocFPGA

   - a MAINTAINER file update

   - a couple of fixes for issues found by automated testing (kernelci,
     coverity, sparse, ...)

   - a few incorrect DT entries are updated to match the hardware"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: defconfig: Update Gemini defconfig
  ARM: s3c24xx: jive: Fix some GPIO names
  HISI LPC: Add Kconfig MFD_CORE dependency
  ARM: dts: Fix NAS4220B pin config
  MAINTAINERS: Remove myself as maintainer
  arm64: dts: correct SATA addresses for Stingray
  ARM64: dts: meson-gxm-khadas-vim2: enable the USB controller
  ARM64: dts: meson-gxl-nexbox-a95x: enable the USB controller
  ARM64: dts: meson-gxl-s905x-libretech-cc: enable the USB controller
  ARM64: dts: meson-gx-p23x-q20x: enable the USB controller
  ARM64: dts: meson-gxl-s905x-p212: enable the USB controller
  ARM64: dts: meson-gxm: add GXM specific USB host configuration
  ARM64: dts: meson-gxl: add USB host support
  ARM: OMAP2+: Fix build when using split object directories
  soc: bcm2835: Make !RASPBERRYPI_FIRMWARE dummies return failure
  soc: bcm: raspberrypi-power: Fix use of __packed
  ARM: dts: Fix cm2 and prm sizes for omap4
  ARM: socfpga_defconfig: Remove QSPI Sector 4K size force
  firmware: arm_scmi: remove redundant null check on array
  arm64: dts: juno: drop unnecessary address-cells and size-cells properties
2018-04-27 09:22:06 -07:00
Linus Torvalds
245131e2d6 * Fix nanddev_mtd_erase() function to match the changes done in
e7bfb3fdbd ("mtd: Stop updating erase_info->state and calling
   mtd_erase_callback()")
 * Fix a memory leak in the Tango NAND controller driver
 * Fix read/write to a suspended erase block in the CFI driver
 * Fix the DT parsing logic in the Marvell NAND controller driver
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Merge tag 'mtd/fixes-for-4.17-rc3' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Boris Brezillon:

 - Fix nanddev_mtd_erase() function to match the changes done in
   e7bfb3fdbd ("mtd: Stop updating erase_info->state and calling
   mtd_erase_callback()")

 - Fix a memory leak in the Tango NAND controller driver

 - Fix read/write to a suspended erase block in the CFI driver

 - Fix the DT parsing logic in the Marvell NAND controller driver

* tag 'mtd/fixes-for-4.17-rc3' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: marvell: fix the chip-select DT parsing logic
  mtd: cfi: cmdset_0002: Do not allow read/write to suspend erase block.
  mtd: cfi: cmdset_0001: Workaround Micron Erase suspend bug.
  mtd: cfi: cmdset_0001: Do not allow read/write to suspend erase block.
  mtd: spi-nor: cadence-quadspi: Fix page fault kernel panic
  mtd: nand: Fix nanddev_mtd_erase()
  mtd: rawnand: tango: Fix struct clk memory leak
2018-04-27 09:15:06 -07:00
Linus Torvalds
0f940fac65 msm, i915, amdgpu, qxl, virtio-gpu, sun4i fixes
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Merge tag 'drm-fixes-for-v4.17-rc3' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Pretty run of the mill for this stage in the cycle: msm, i915, amdgpu,
  qxl, virtio-gpu, sun4i fixes.

  i915:
   - Black screen fixes
   - Display w/a fix
   - HDA codec interop fix

  sun4i:
   - tbsa711 tablet regression fix

  qxl:
   - Regression fixes due to changes in TTM

  virtio:
   - Fix wait event condition

  msm:
   - DSI display fixes

  amdgpu:
   - fix hang on Carrizo
   - DP MST hang fixes
   - irq handling deadlock in DC.

  amdkfd:
   - Fix Kconfig issue
   - Clock retrieval fix
   - Sparse fixes"

* tag 'drm-fixes-for-v4.17-rc3' of git://people.freedesktop.org/~airlied/linux: (27 commits)
  drm/edid: Reset more of the display info
  drm/virtio: fix vq wait_event condition
  qxl: keep separate release_bo pointer
  qxl: fix qxl_release_{map,unmap}
  Revert "drm/sun4i: add lvds mode_valid function"
  drm/amd/display: Check dc_sink every time in MST hotplug
  drm/amd/display: Update MST edid property every time
  drm/amd/display: Don't read EDID in atomic_check
  drm/amd/display: Disallow enabling CRTC without primary plane with FB
  drm/amd/display: Fix deadlock when flushing irq
  drm/i915/fbdev: Enable late fbdev initial configuration
  drm/i915: Use ktime on wait_for
  drm/amdgpu: set COMPUTE_PGM_RSRC1 for SGPR/VGPR clearing shaders
  drm/amdkfd: fix build, select MMU_NOTIFIER
  drm/amdkfd: fix clock counter retrieval for node without GPU
  drm/amdkfd: Fix the error return code in kfd_ioctl_unmap_memory_from_gpu()
  drm/amdkfd: kfd_dev_is_large_bar() can be static
  drm/i915: Enable display WA#1183 from its correct spot
  drm/i915/audio: set minimum CD clock to twice the BCLK
  drm/msm: don't deref error pointer in the msm_fbdev_create error path
  ...
2018-04-27 09:06:22 -07:00
Junaid Shahid
a468f2dbf9 kvm: apic: Flush TLB after APIC mode/address change if VPIDs are in use
Currently, KVM flushes the TLB after a change to the APIC access page
address or the APIC mode when EPT mode is enabled. However, even in
shadow paging mode, a TLB flush is needed if VPIDs are being used, as
specified in the Intel SDM Section 29.4.5.

So replace vmx_flush_tlb_ept_only() with vmx_flush_tlb(), which will
flush if either EPT or VPIDs are in use.

Signed-off-by: Junaid Shahid <junaids@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2018-04-27 17:44:00 +02:00
Andy Lutomirski
8bb2610bc4 x86/entry/64/compat: Preserve r8-r11 in int $0x80
32-bit user code that uses int $80 doesn't care about r8-r11.  There is,
however, some 64-bit user code that intentionally uses int $0x80 to invoke
32-bit system calls.  From what I've seen, basically all such code assumes
that r8-r15 are all preserved, but the kernel clobbers r8-r11.  Since I
doubt that there's any code that depends on int $0x80 zeroing r8-r11,
change the kernel to preserve them.

I suspect that very little user code is broken by the old clobber, since
r8-r11 are only rarely allocated by gcc, and they're clobbered by function
calls, so they only way we'd see a problem is if the same function that
invokes int $0x80 also spills something important to one of these
registers.

The current behavior seems to date back to the historical commit
"[PATCH] x86-64 merge for 2.6.4".  Before that, all regs were
preserved.  I can't find any explanation of why this change was made.

Update the test_syscall_vdso_32 testcase as well to verify the new
behavior, and it strengthens the test to make sure that the kernel doesn't
accidentally permute r8..r15.

Suggested-by: Denys Vlasenko <dvlasenk@redhat.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Link: https://lkml.kernel.org/r/d4c4d9985fbe64f8c9e19291886453914b48caee.1523975710.git.luto@kernel.org
2018-04-27 17:07:58 +02:00
Arnd Bergmann
1a512c0882 x86/ipc: Fix x32 version of shmid64_ds and msqid64_ds
A bugfix broke the x32 shmid64_ds and msqid64_ds data structure layout
(as seen from user space)  a few years ago: Originally, __BITS_PER_LONG
was defined as 64 on x32, so we did not have padding after the 64-bit
__kernel_time_t fields, After __BITS_PER_LONG got changed to 32,
applications would observe extra padding.

In other parts of the uapi headers we seem to have a mix of those
expecting either 32 or 64 on x32 applications, so we can't easily revert
the path that broke these two structures.

Instead, this patch decouples x32 from the other architectures and moves
it back into arch specific headers, partially reverting the even older
commit 73a2d096fd ("x86: remove all now-duplicate header files").

It's not clear whether this ever made any difference, since at least
glibc carries its own (correct) copy of both of these header files,
so possibly no application has ever observed the definitions here.

Based on a suggestion from H.J. Lu, I tried out the tool from
https://github.com/hjl-tools/linux-header to find other such
bugs, which pointed out the same bug in statfs(), which also has
a separate (correct) copy in glibc.

Fixes: f4b4aae182 ("x86/headers/uapi: Fix __BITS_PER_LONG value for x32 builds")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "H . J . Lu" <hjl.tools@gmail.com>
Cc: Jeffrey Walton <noloader@gmail.com>
Cc: stable@vger.kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20180424212013.3967461-1-arnd@arndb.de
2018-04-27 17:06:29 +02:00
Petr Tesarik
3db3eb2852 x86/setup: Do not reserve a crash kernel region if booted on Xen PV
Xen PV domains cannot shut down and start a crash kernel. Instead,
the crashing kernel makes a SCHEDOP_shutdown hypercall with the
reason code SHUTDOWN_crash, cf. xen_crash_shutdown() machine op in
arch/x86/xen/enlighten_pv.c.

A crash kernel reservation is merely a waste of RAM in this case. It
may also confuse users of kexec_load(2) and/or kexec_file_load(2).
When flags include KEXEC_ON_CRASH or KEXEC_FILE_ON_CRASH,
respectively, these syscalls return success, which is technically
correct, but the crash kexec image will never be actually used.

Signed-off-by: Petr Tesarik <ptesarik@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: xen-devel@lists.xenproject.org
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jean Delvare <jdelvare@suse.de>
Link: https://lkml.kernel.org/r/20180425120835.23cef60c@ezekiel.suse.cz
2018-04-27 17:06:28 +02:00
Baolin Wang
2a01046120 i2c: sprd: Fix the i2c count issue
We found the I2C controller count register is unreliable sometimes,
that will cause I2C to lose data. Thus we can read the data count
from 'i2c_dev->count' instead of the I2C controller count register.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-04-27 14:12:43 +02:00
Baolin Wang
da33aa03fa i2c: sprd: Prevent i2c accesses after suspend is called
Add one flag to indicate if the i2c controller has been in suspend state,
which can prevent i2c accesses after i2c controller is suspended following
system suspend.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-04-27 14:12:17 +02:00
Alexander Popov
23a27722b5 i2c: dev: prevent ZERO_SIZE_PTR deref in i2cdev_ioctl_rdwr()
i2cdev_ioctl_rdwr() allocates i2c_msg.buf using memdup_user(), which
returns ZERO_SIZE_PTR if i2c_msg.len is zero.

Currently i2cdev_ioctl_rdwr() always dereferences the buf pointer in case
of I2C_M_RD | I2C_M_RECV_LEN transfer. That causes a kernel oops in
case of zero len.

Let's check the len against zero before dereferencing buf pointer.

This issue was triggered by syzkaller.

Signed-off-by: Alexander Popov <alex.popov@linux.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
[wsa: use '< 1' instead of '!' for easier readability]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-04-27 14:04:10 +02:00
Mark Rutland
3789c122d0 arm64: avoid instrumenting atomic_ll_sc.o
Our out-of-line atomics are built with a special calling convention,
preventing pointless stack spilling, and allowing us to patch call sites
with ARMv8.1 atomic instructions.

Instrumentation inserted by the compiler may result in calls to
functions not following this special calling convention, resulting in
registers being unexpectedly clobbered, and various problems resulting
from this.

For example, if a kernel is built with KCOV and ARM64_LSE_ATOMICS, the
compiler inserts calls to __sanitizer_cov_trace_pc in the prologues of
the atomic functions. This has been observed to result in spurious
cmpxchg failures, leading to a hang early on in the boot process.

This patch avoids such issues by preventing instrumentation of our
out-of-line atomics.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2018-04-27 12:14:44 +01:00
Arnd Bergmann
4ea3f05614 This pull request contains Broadcom ARM64-based SoCs Device Tree fixes
for 4.17, please pull the following:
 
 - Srinath fixes the register base address of all SATA controllers on
   Stingray
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Merge tag 'arm-soc/for-4.17/devicetree-arm64-fixes' of https://github.com/Broadcom/stblinux into fixes

Pull "Broadcom devicetree-arm64 fixes for 4.17" from Florian Fainelli:

This pull request contains Broadcom ARM64-based SoCs Device Tree fixes
for 4.17, please pull the following:

- Srinath fixes the register base address of all SATA controllers on
  Stingray

* tag 'arm-soc/for-4.17/devicetree-arm64-fixes' of https://github.com/Broadcom/stblinux:
  arm64: dts: correct SATA addresses for Stingray
2018-04-27 10:21:18 +02:00