The fpregs_active() inline function is pretty pointless - in almost
all the callsites it can be replaced with a direct fpu->fpregs_active
access.
Do so and eliminate the extra layer of obfuscation.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-16-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Make it more consistent with regular memcpy() semantics, where the destination
argument comes first.
No change in functionality.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-15-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
'size_total' is derived from an unsigned input parameter - and then converted
to 'int' and checked for negative ranges:
if (size_total < 0 || offset < size_total) {
This conversion and the checks are unnecessary obfuscation, reject overly
large requested copy sizes outright and simplify the underlying code.
Reported-by: Rik van Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-10-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Right now there's a confusing mixture of 'offset' and 'size' parameters:
- __copy_xstate_to_*() input parameter 'end_pos' not not really an offset,
but the full size of the copy to be performed.
- input parameter 'count' to copy_xstate_to_*() shadows that of
__copy_xstate_to_*()'s 'count' parameter name - but the roles
are different: the first one is the total number of bytes to
be copied, while the second one is a partial copy size.
To unconfuse all this, use a consistent set of parameter names:
- 'size' is the partial copy size within a single xstate component
- 'size_total' is the total copy requested
- 'offset_start' is the requested starting offset.
- 'offset' is the offset within an xstate component.
No change in functionality.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-9-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
'start_pos' is always 0, so remove it and remove the pointless check of 'pos < 0'
which can not ever be true as 'pos' is unsigned ...
No change in functionality.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-8-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Parameter ordering is weird:
int copy_xstate_to_kernel(unsigned int pos, unsigned int count, void *kbuf, struct xregs_state *xsave);
int copy_xstate_to_user(unsigned int pos, unsigned int count, void __user *ubuf, struct xregs_state *xsave);
'pos' and 'count', which are attributes of the destination buffer, are listed before the destination
buffer itself ...
List them after the primary arguments instead.
This makes the code more similar to regular memcpy() variant APIs.
No change in functionality.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-6-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The 'kbuf' parameter is unused in the _user() side of the API, remove it.
This simplifies the code and makes it easier to think about.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-5-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The 'ubuf' parameter is unused in the _kernel() side of the API, remove it.
This simplifies the code and makes it easier to think about.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-4-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
copy_xstate_to_user() is a weird API - in part due to a bad API inherited
from the regset APIs.
But don't propagate that bad API choice into the FPU code - so as a first
step split the API into kernel and user buffer handling routines.
(Also split the xstate_copyout() internal helper.)
The split API is a dumb duplication that should be obviously correct, the
real splitting will be done in the next patch.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-3-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The 'copyin/copyout' nomenclature needlessly departs from what the modern FPU code
uses, which is:
copy_fpregs_to_fpstate()
copy_fpstate_to_sigframe()
copy_fregs_to_user()
copy_fxregs_to_kernel()
copy_fxregs_to_user()
copy_kernel_to_fpregs()
copy_kernel_to_fregs()
copy_kernel_to_fxregs()
copy_kernel_to_xregs()
copy_user_to_fregs()
copy_user_to_fxregs()
copy_user_to_xregs()
copy_xregs_to_kernel()
copy_xregs_to_user()
I.e. according to this pattern, the following rename should be done:
copyin_to_xsaves() -> copy_user_to_xstate()
copyout_from_xsaves() -> copy_xstate_to_user()
or, if we want to be pedantic, denote that that the user-space format is ptrace:
copyin_to_xsaves() -> copy_user_ptrace_to_xstate()
copyout_from_xsaves() -> copy_xstate_to_user_ptrace()
But I'd suggest the shorter, non-pedantic name.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-2-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
- Fix the initialization of resources in the ACPI WDAT watchdog
driver that uses unititialized memory which causes compiler
warnings to be triggered (Arnd Bergmann).
- Fix a recent regression in the ACPI device properties handling
that causes some device properties data to be skipped during
enumeration (Sakari Ailus).
- Fix a recent change in behavior that caused the ACPI_HANDLE()
macro to stop working for non-GPL code which is a problem for
the NVidia binary graphics driver, for example (John Hubbard).
- Add a MAINTAINERS entry for the ACPI PMIC drivers to specify
the official reviewers for that code (Rafael Wysocki).
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Merge tag 'acpi-4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix the initialization of resources in the ACPI WDAT watchdog
driver, a recent regression in the ACPI device properties handling, a
recent change in behavior causing the ACPI_HANDLE() macro to only work
for GPL code and create a MAINTAINERS entry for ACPI PMIC drivers in
order to specify the official reviewers for that code.
Specifics:
- Fix the initialization of resources in the ACPI WDAT watchdog
driver that uses unititialized memory which causes compiler
warnings to be triggered (Arnd Bergmann).
- Fix a recent regression in the ACPI device properties handling that
causes some device properties data to be skipped during enumeration
(Sakari Ailus).
- Fix a recent change in behavior that caused the ACPI_HANDLE() macro
to stop working for non-GPL code which is a problem for the NVidia
binary graphics driver, for example (John Hubbard).
- Add a MAINTAINERS entry for the ACPI PMIC drivers to specify the
official reviewers for that code (Rafael Wysocki)"
* tag 'acpi-4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: properties: Return _DSD hierarchical extension (data) sub-nodes correctly
ACPI / bus: Make ACPI_HANDLE() work for non-GPL code again
ACPI / watchdog: properly initialize resources
ACPI / PMIC: Add code reviewers to MAINTAINERS
- Fix a regression in cpufreq on systems using DT as the source of
CPU configuration information where two different code paths
attempt to create the cpufreq-dt device object (there can be only
one) and fix up the "compatible" matching for some TI platforms
on top of that (Viresh Kumar, Dave Gerlach).
- Fix an initialization time memory leak in cpuidle on ARM which
occurs if the cpuidle driver initialization fails (Stefan Wahren).
- Fix a PM core function that checks whether or not there are any
system suspend/resume callbacks for a device, but forgets to
check legacy callbacks which then may be skipped incorrectly
and the system may crash and/or the device may become unusable
after a suspend-resume cycle (Rafael Wysocki).
- Fix request type validation for latency tolerance PM QoS requests
which may lead to unexpected behavior (Jan Schönherr).
- Fix a broken link to PM documentation from a header file and a
typo in a PM document (Geert Uytterhoeven, Rafael Wysocki).
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Merge tag 'pm-4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix a cpufreq regression introduced by recent changes related to
the generic DT driver, an initialization time memory leak in cpuidle
on ARM, a PM core bug that may cause system suspend/resume to fail on
some systems, a request type validation issue in the PM QoS framework
and two documentation-related issues.
Specifics:
- Fix a regression in cpufreq on systems using DT as the source of
CPU configuration information where two different code paths
attempt to create the cpufreq-dt device object (there can be only
one) and fix up the "compatible" matching for some TI platforms on
top of that (Viresh Kumar, Dave Gerlach).
- Fix an initialization time memory leak in cpuidle on ARM which
occurs if the cpuidle driver initialization fails (Stefan Wahren).
- Fix a PM core function that checks whether or not there are any
system suspend/resume callbacks for a device, but forgets to check
legacy callbacks which then may be skipped incorrectly and the
system may crash and/or the device may become unusable after a
suspend-resume cycle (Rafael Wysocki).
- Fix request type validation for latency tolerance PM QoS requests
which may lead to unexpected behavior (Jan Schönherr).
- Fix a broken link to PM documentation from a header file and a typo
in a PM document (Geert Uytterhoeven, Rafael Wysocki)"
* tag 'pm-4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: ti-cpufreq: Support additional am43xx platforms
ARM: cpuidle: Avoid memleak if init fail
cpufreq: dt-platdev: Add some missing platforms to the blacklist
PM: core: Fix device_pm_check_callbacks()
PM: docs: Drop an excess character from devices.rst
PM / QoS: Use the correct variable to check the QoS request type
driver core: Fix link to device power management documentation
Pull input fixes from Dmitry Torokhov:
- fixes for two long standing issues (lock up and a crash) in force
feedback handling in uinput driver
- tweak to firmware update timing in Elan I2C touchpad driver.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elan_i2c - extend Flash-Write delay
Input: uinput - avoid crash when sending FF request to device going away
Input: uinput - avoid FF flush when destroying device
- sysctl and seccomp operation to discover available actions. (tyhicks)
- new per-filter configurable logging infrastructure and sysctl. (tyhicks)
- SECCOMP_RET_LOG to log allowed syscalls. (tyhicks)
- SECCOMP_RET_KILL_PROCESS as the new strictest possible action.
- self-tests for new behaviors.
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Merge tag 'seccomp-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp updates from Kees Cook:
"Major additions:
- sysctl and seccomp operation to discover available actions
(tyhicks)
- new per-filter configurable logging infrastructure and sysctl
(tyhicks)
- SECCOMP_RET_LOG to log allowed syscalls (tyhicks)
- SECCOMP_RET_KILL_PROCESS as the new strictest possible action
- self-tests for new behaviors"
[ This is the seccomp part of the security pull request during the merge
window that was nixed due to unrelated problems - Linus ]
* tag 'seccomp-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
samples: Unrename SECCOMP_RET_KILL
selftests/seccomp: Test thread vs process killing
seccomp: Implement SECCOMP_RET_KILL_PROCESS action
seccomp: Introduce SECCOMP_RET_KILL_PROCESS
seccomp: Rename SECCOMP_RET_KILL to SECCOMP_RET_KILL_THREAD
seccomp: Action to log before allowing
seccomp: Filter flag to log all actions except SECCOMP_RET_ALLOW
seccomp: Selftest for detection of filter flag support
seccomp: Sysctl to configure actions that are allowed to be logged
seccomp: Operation for checking if an action is available
seccomp: Sysctl to display available actions
seccomp: Provide matching filter for introspection
selftests/seccomp: Refactor RET_ERRNO tests
selftests/seccomp: Add simple seccomp overhead benchmark
selftests/seccomp: Add tests for basic ptrace actions
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Merge tag '4.14-smb3-fixes-from-recent-test-events-for-stable' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Various SMB3 fixes for stable and security improvements from the
recently completed SMB3/Samba test events
* tag '4.14-smb3-fixes-from-recent-test-events-for-stable' of git://git.samba.org/sfrench/cifs-2.6:
SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags
SMB3: handle new statx fields
SMB: Validate negotiate (to protect against downgrade) even if signing off
cifs: release auth_key.response for reconnect.
cifs: release cifs root_cred after exit_cifs
CIFS: make arrays static const, reduces object code size
[SMB3] Update session and share information displayed for debugging SMB2/SMB3
cifs: show 'soft' in the mount options for hard mounts
SMB3: Warn user if trying to sign connection that authenticated as guest
SMB3: Fix endian warning
Fix SMB3.1.1 guest authentication to Samba
release and a rare NULL dereference in create_session_open_msg().
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Merge tag 'ceph-for-4.14-rc2' of git://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"Two small but important fixes: RADOS semantic change in upcoming v12.2.1
release and a rare NULL dereference in create_session_open_msg()"
* tag 'ceph-for-4.14-rc2' of git://github.com/ceph/ceph-client:
ceph: avoid panic in create_session_open_msg() if utsname() returns NULL
libceph: don't allow bidirectional swap of pg-upmap-items
Signed-off-by: Steve French <smfrench@gmail.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Including:
- Two Kconfig fixes to fix dependencies that cause compile
failures when they are not fulfilled.
- Section mismatch fix for Intel VT-d
- A fix for PCI topology detection in ARM device-tree code
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Merge tag 'iommu-fixes-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- two Kconfig fixes to fix dependencies that cause compile failures
when they are not fulfilled.
- a section mismatch fix for Intel VT-d
- a fix for PCI topology detection in ARM device-tree code
* tag 'iommu-fixes-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/of: Remove PCI host bridge node check
iommu/qcom: Depend on HAS_DMA to fix compile error
iommu/vt-d: Fix harmless section mismatch warning
iommu: Add missing dependencies
Pull arch/tile fixes from Chris Metcalf:
"These are a code cleanup and config cleanup, respectively"
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
tile: array underflow in setup_maxnodemem()
tile: defconfig: Cleanup from old Kconfig options
- #ifdef CONFIG_EFI around __efi_fpsimd_begin/end
- Assembly code alignment reduced to 4 bytes from 16
- Ensure the kernel is compiled for LP64 (there are some arm64 compilers
around defaulting to ILP32)
- Fix arm_pmu_acpi memory leak on the error path
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- #ifdef CONFIG_EFI around __efi_fpsimd_begin/end
- Assembly code alignment reduced to 4 bytes from 16
- Ensure the kernel is compiled for LP64 (there are some arm64
compilers around defaulting to ILP32)
- Fix arm_pmu_acpi memory leak on the error path
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
drivers/perf: arm_pmu_acpi: Release memory obtained by kasprintf
arm64: ensure the kernel is compiled for LP64
arm64: relax assembly code alignment from 16 byte to 4 byte
arm64: efi: Don't include EFI fpsimd save/restore code in non-EFI kernels
We weren't returning the creation time or the two easily supported
attributes (ENCRYPTED or COMPRESSED) for the getattr call to
allow statx to return these fields.
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>\
Acked-by: Jeff Layton <jlayton@poochiereds.net>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Some architectures define the no-op macros/functions copy_segments,
release_segments and forget_segments. These are used nowhere in the
tree, so removed them.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Vineet Gupta <vgupta@synopsys.com> [for arch/arc]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pm-core:
PM: core: Fix device_pm_check_callbacks()
* pm-qos:
PM / QoS: Use the correct variable to check the QoS request type
* pm-docs:
PM: docs: Drop an excess character from devices.rst
driver core: Fix link to device power management documentation
The original 20ms delay is only marginally enough delay after a block write
operation during firmware update. Let's increase the delay to ensure that
the controller finishes up storing the page to avoid failures in the
firmware updates.
Signed-off-by: KT Liao <kt.liao@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge tag 'for-linus-4.14b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"A fix for a missing __init annotation and two cleanup patches"
* tag 'for-linus-4.14b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen, arm64: drop dummy lookup_address()
xen: don't compile pv-specific parts if XEN_PV isn't configured
xen: x86: mark xen_find_pt_base as __init
Four fixes for the new instruction emulation code. A fix for CPU offline on bare
metal machines when certain idle states are not supported, and a fix for a
device_node refcounting oops during CPU hotplug, caused by recent changes.
Going to stable are a fix for an oops during core dump on machines that have TM
(Transactional Memory) disabled. Reordering some EEH initialisation to avoid
trashing memory, and another device_node refcounting fix.
And a few other minor things.
Thanks to:
Anton Blanchard, Benjamin Herrenschmidt, Cyril Bur, Gautham R. Shenoy, Gustavo
Romero, Kamalesh Babulal, Matthew Weber, Matt Weber, Naveen N. Rao, Nicholas
Piggin, Pavithra Prakash, Ravi Bangoria, Ronak Desai, Scott Wood, Tyrel
Datwyler.
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Merge tag 'powerpc-4.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"It turns out our single-fix pull from last week was too good to be
true. I missed a few fixes in that pull that had already come in
because I was on leave, but also we hadn't found the bugs yet. So this
week it's a bit bigger, though not ridiculous. Hopefully things will
settle down from here on.
Four fixes for the new instruction emulation code. A fix for CPU
offline on bare metal machines when certain idle states are not
supported, and a fix for a device_node refcounting oops during CPU
hotplug, caused by recent changes.
Going to stable are a fix for an oops during core dump on machines
that have TM (Transactional Memory) disabled. Reordering some EEH
initialisation to avoid trashing memory, and another device_node
refcounting fix.
And a few other minor things.
Thanks to: Anton Blanchard, Benjamin Herrenschmidt, Cyril Bur, Gautham
R. Shenoy, Gustavo Romero, Kamalesh Babulal, Matthew Weber, Matt Weber,
Naveen N. Rao, Nicholas Piggin, Pavithra Prakash, Ravi Bangoria, Ronak
Desai, Scott Wood, Tyrel Datwyler"
* tag 'powerpc-4.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/pseries: Fix parent_dn reference leak in add_dt_node()
powerpc/pseries: Fix "OF: ERROR: Bad of_node_put() on /cpus" during DLPAR
powerpc/eeh: Create PHB PEs after EEH is initialized
powerpc/kprobes: Update optprobes to use emulate_update_regs()
powerpc/powernv: Clear LPCR[PECE1] via stop-api only for deep state offline
powerpc/sstep: mullw should calculate a 64 bit signed result
powerpc/sstep: Fix issues with mcrf
powerpc/sstep: Fix issues with set_cr0()
powerpc/tm: Flush TM only if CPU has TM feature
powerpc/sysrq: Fix oops whem ppmu is not registered
powerpc/configs: Update for CONFIG_SND changes
powerpc/e6500: Update machine check for L1D cache err
Pull MIPS fixes from Ralf Baechle:
- Fix a build error on MSP71xx which used to rely on somehow magically
<asm/setup.h> being pulled in which no longer happens.
- Fix the __write_64bit_c0_split inline assembler where there was the
theoretical possibility of GCC interpret the constraints such that
bad code could result.
- A __init was causing section mismatch errors on Alchemy. Just to be
on the safe side, Manuel's patch does away with all of them.
- Fix perf event init.
* '4.14-fixes' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: PCI: fix pcibios_map_irq section mismatch
MIPS: Fix input modify in __write_64bit_c0_split()
MIPS: MSP71xx: Include asm/setup.h
MIPS: Fix perf event init
Pull s390 fixes from Martin Schwidefsky:
- A couple of bug fixes: memory management, perf, cio, dasd and
scm_blk.
- A larger change in regard to the CPU topology to improve performance
for systems running under z/VM or KVM.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/topology: enable / disable topology dynamically
s390/topology: alternative topology for topology-less machines
s390/mm: fix write access check in gup_huge_pmd()
s390/mm: make pmdp_invalidate() do invalidation only
s390/cio: recover from bad paths
s390/scm_blk: consistently use blk_status_t as error type
s390/dasd: fix race during dasd initialization
s390/perf: fix bug when creating per-thread event
Free memory region, if arm_pmu_acpi_probe is not successful.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
of_pci_iommu_init() tries to be clever and stop its alias walk at the
device represented by master_np, in case of weird PCI topologies where
the bridge to the IOMMU and the rest of the system is not at the root.
It turns out this is a bit short-sighted, since there are plenty of
other callers of pci_for_each_dma_alias() which would also need the same
behaviour in that situation, and the only platform so far with such a
topology (Cavium ThunderX2) already solves it more generally via a PCI
quirk. As this check is effectively redundant, and returning a boolean
value as an int is a bit broken anyway, let's just get rid of it.
Reported-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Fixes: d87beb7492 ("iommu/of: Handle PCI aliases properly")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Pull libnvdimm fixes from Dan Williams:
"A crash fix and corresponding regression test enabling for the crash
scenario. The unit test for this crash is available in ndctl-v58.2.
This branch has received a build success notification from the
0day-kbuild robot over 148 configs. The fix is tagged for -stable /
backport to 4.13"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm, namespace: fix btt claim class crash
tools/testing/nvdimm: disable labels for nfit_test.1
Normally, when input device supporting force feedback effects is being
destroyed, we try to "flush" currently playing effects, so that the
physical device does not continue vibrating (or executing other effects).
Unfortunately this does not work well for uinput as flushing of the effects
deadlocks with the destroy action:
- if device is being destroyed because the file descriptor is being closed,
then there is noone to even service FF requests;
- if device is being destroyed because userspace sent UI_DEV_DESTROY,
while theoretically it could be possible to service FF requests,
userspace is unlikely to do so (they'd need to make sure FF handling
happens on a separate thread) even if kernel solves the issue with FF
ioctls deadlocking with UI_DEV_DESTROY ioctl on udev->mutex.
To avoid lockups like the one below, let's install a custom input device
flush handler, and avoid trying to flush force feedback effects when we
destroying the device, and instead rely on uinput to shut off the device
properly.
NMI watchdog: Watchdog detected hard LOCKUP on cpu 3
...
<<EOE>> [<ffffffff817a0307>] _raw_spin_lock_irqsave+0x37/0x40
[<ffffffff810e633d>] complete+0x1d/0x50
[<ffffffffa00ba08c>] uinput_request_done+0x3c/0x40 [uinput]
[<ffffffffa00ba587>] uinput_request_submit.part.7+0x47/0xb0 [uinput]
[<ffffffffa00bb62b>] uinput_dev_erase_effect+0x5b/0x76 [uinput]
[<ffffffff815d91ad>] erase_effect+0xad/0xf0
[<ffffffff815d929d>] flush_effects+0x4d/0x90
[<ffffffff815d4cc0>] input_flush_device+0x40/0x60
[<ffffffff815daf1c>] evdev_cleanup+0xac/0xc0
[<ffffffff815daf5b>] evdev_disconnect+0x2b/0x60
[<ffffffff815d74ac>] __input_unregister_device+0xac/0x150
[<ffffffff815d75f7>] input_unregister_device+0x47/0x70
[<ffffffffa00bac45>] uinput_destroy_device+0xb5/0xc0 [uinput]
[<ffffffffa00bb2de>] uinput_ioctl_handler.isra.9+0x65e/0x740 [uinput]
[<ffffffff811231ab>] ? do_futex+0x12b/0xad0
[<ffffffffa00bb3f8>] uinput_ioctl+0x18/0x20 [uinput]
[<ffffffff81241248>] do_vfs_ioctl+0x298/0x480
[<ffffffff81337553>] ? security_file_ioctl+0x43/0x60
[<ffffffff812414a9>] SyS_ioctl+0x79/0x90
[<ffffffff817a04ee>] entry_SYSCALL_64_fastpath+0x12/0x71
Reported-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
Reported-by: Clément VUCHENER <clement.vuchener@gmail.com>
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=193741
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
- remove firmware install from rpm-pkg / deb-pkg
- fix mismatch between release number and UTS_VERSION for rpm-pkg
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Merge tag 'kbuild-fixes-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
"Here are some early Kbuild fixes.
The in-kernel firmware was removed during the previous merge window.
Since then, some bug reports of broken rpm building are flying in ML.
We need to fix it now.
Summary:
- remove firmware install from rpm-pkg / deb-pkg
- fix mismatch between release number and UTS_VERSION for rpm-pkg"
* tag 'kbuild-fixes-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: rpm-pkg: fix version number handling
kbuild: deb-pkg: remove firmware package support
kbuild: rpm-pkg: delete firmware_install to fix build error
Pull misc fixes from Al Viro:
"A couple of regression fixes, one for this merge window, one for the
previous cycle"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
ipc/shm: Fix order of parameters when calling copy_compat_shmid_to_user
iov_iter: fix page_copy_sane for compound pages
* Fix the SFDP parsing code (bugs reported by Geert Uytterhoeven)
NAND:
* Fix a resource leak in the lpc32xx_mlc driver
* Fix a build warning in the core
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Merge tag 'mtd/fixes-for-4.14-rc2' of git://git.infradead.org/linux-mtd
Pull mtd fixes from Boris Brezillon:
"SPI NOR:
- Fix the SFDP parsing code (bugs reported by Geert Uytterhoeven)
NAND:
- Fix a resource leak in the lpc32xx_mlc driver
- Fix a build warning in the core"
* tag 'mtd/fixes-for-4.14-rc2' of git://git.infradead.org/linux-mtd:
mtd: nand: remove unused blockmask variable
mtd: nand: lpc32xx_mlc: Fix an error handling path in lpc32xx_nand_probe()
mtd: spi-nor: fix DMA unsafe buffer issue in spi_nor_read_sfdp()
mtd: spi-nor: Check consistency of the memory size extracted from the SFDP
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Merge tag 'drm-fixes-for-v4.14-rc2' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"amdkfd, i915 and exynos fixes.
I've ended up on unplanned + planned leave this week, but there were
some fixes I decided to dequeue, some amdkfd bits missed the next pull
but they are pretty trivial, so I included them.
I'm not sure I'll see much else for rc2, lots of people are at XDC"
* tag 'drm-fixes-for-v4.14-rc2' of git://people.freedesktop.org/~airlied/linux:
drm/exynos/hdmi: Fix unsafe list iteration
drm: exynos: include linux/irq.h
drm/exynos: Fix suspend/resume support
drm/exynos: Fix locking in the suspend/resume paths
drm/i915: Remove unused 'in_vbl' from i915_get_crtc_scanoutpos()
drm/i915/cnp: set min brightness from VBT
Revert "drm/i915/bxt: Disable device ready before shutdown command"
drm/i915/bxt: set min brightness from VBT
drm/i915: Fix an error handling in 'intel_framebuffer_init()'
drm/i915/gvt: Fix incorrect PCI BARs reporting
drm/amdkfd: pass queue's mqd when destroying mqd
drm/amdkfd: remove memset before memcpy
uapi linux/kfd_ioctl.h: only use __u32 and __u64
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Merge tag 'dma-mapping-4.14-2' of git://git.infradead.org/users/hch/dma-mapping
Pull dma mapping fix from Christoph Hellwig:
"A fix for a fix that went in this merge window from Arnd"
* tag 'dma-mapping-4.14-2' of git://git.infradead.org/users/hch/dma-mapping:
dma-coherent: fix rmem_dma_device_init regression
Drop the __init from pcibios_map_irq() to make this section mis-
match go away:
WARNING: vmlinux.o(.text+0x56acd4): Section mismatch in reference from the function pcibios_scanbus() to the function .init.text:pcibios_map_irq()
The function pcibios_scanbus() references
the function __init pcibios_map_irq().
This is often because pcibios_scanbus lacks a __init
annotation or the annotation of pcibios_map_irq is wrong.
Run-Tested only on Alchemy.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17267/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The inline asm in __write_64bit_c0_split() modifies the 64-bit input
operand by shifting the high register left by 32, and constructing the
full 64-bit value in the low register (even on a 32-bit kernel), so if
that value is used again it could cause breakage as GCC would assume the
registers haven't changed when they have.
To quote the GCC extended asm documentation:
> Warning: Do not modify the contents of input-only operands (except for
> inputs tied to outputs). The compiler assumes that on exit from the
> asm statement these operands contain the same values as they had
> before executing the statement.
Avoid modifying the input by using a temporary variable as an output
which is modified instead of the input and not otherwise used. The asm
is always __volatile__ so GCC shouldn't optimise it out. The low
register of the temporary output is written before the high register of
the input is read, so we have two constraint alternatives, one where
both use the same registers (for when the input value isn't subsequently
used), and one with an early clobber on the output in case the low
output uses the same register as the high input. This allows the
resulting assembly to remain mostly unchanged.
A diff of a MIPS32r6 kernel reveals only three differences, two in
relation to write_c0_r10k_diag() in cpu_probe() (register allocation
rearranged slightly but otherwise identical), and one in relation to
write_c0_cvmmemctl2() in kvm_vz_local_flush_guesttlb_all(), but the
octeon CPU is only supported on 64-bit kernels where
__write_64bit_c0_split() isn't used so that shouldn't matter in
practice. So there currently doesn't appear to be anything broken by
this bug.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17315/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
msp71xx_defconfig can not be built at the in v4.14-rc1
arch/mips/pmcs-msp71xx/msp_smp.c:72:2: error: implicit declaration of function 'set_vi_handler' [-Werror=implicit-function-declaration]
I don't know what caused the regression, but including the right
header is the obvious fix.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17309/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
