Thomas Gleixner [Sun, 29 Apr 2018 13:21:42 +0000 (15:21 +0200)]
x86/process: Allow runtime control of Speculative Store Bypass
The Speculative Store Bypass vulnerability can be mitigated with the
Reduced Data Speculation (RDS) feature. To allow finer grained control of
this eventually expensive mitigation a per task mitigation control is
required.
Add a new TIF_RDS flag and put it into the group of TIF flags which are
evaluated for mismatch in switch_to(). If these bits differ in the previous
and the next task, then the slow path function __switch_to_xtra() is
invoked. Implement the TIF_RDS dependent mitigation control in the slow
path.
If the prctl for controlling Speculative Store Bypass is disabled or no
task uses the prctl then there is no overhead in the switch_to() fast
path.
Update the KVM related speculation control functions to take TID_RDS into
account as well.
Based on a patch from Tim Chen. Completely rewritten.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thomas Gleixner [Sun, 29 Apr 2018 13:20:11 +0000 (15:20 +0200)]
prctl: Add speculation control prctls
Add two new prctls to control aspects of speculation related vulnerabilites
and their mitigations to provide finer grained control over performance
impacting mitigations.
PR_GET_SPECULATION_CTRL returns the state of the speculation misfeature
which is selected with arg2 of prctl(2). The return value uses bit 0-2 with
the following meaning:
Bit Define Description
0 PR_SPEC_PRCTL Mitigation can be controlled per task by
PR_SET_SPECULATION_CTRL
1 PR_SPEC_ENABLE The speculation feature is enabled, mitigation is
disabled
2 PR_SPEC_DISABLE The speculation feature is disabled, mitigation is
enabled
If all bits are 0 the CPU is not affected by the speculation misfeature.
If PR_SPEC_PRCTL is set, then the per task control of the mitigation is
available. If not set, prctl(PR_SET_SPECULATION_CTRL) for the speculation
misfeature will fail.
PR_SET_SPECULATION_CTRL allows to control the speculation misfeature, which
is selected by arg2 of prctl(2) per task. arg3 is used to hand in the
control value, i.e. either PR_SPEC_ENABLE or PR_SPEC_DISABLE.
The common return values are:
EINVAL prctl is not implemented by the architecture or the unused prctl()
arguments are not 0
ENODEV arg2 is selecting a not supported speculation misfeature
PR_SET_SPECULATION_CTRL has these additional return values:
ERANGE arg3 is incorrect, i.e. it's not either PR_SPEC_ENABLE or PR_SPEC_DISABLE
ENXIO prctl control of the selected speculation misfeature is disabled
The first supported controlable speculation misfeature is
PR_SPEC_STORE_BYPASS. Add the define so this can be shared between
architectures.
Based on an initial patch from Tim Chen and mostly rewritten.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thomas Gleixner [Sun, 29 Apr 2018 13:01:37 +0000 (15:01 +0200)]
x86/speculation: Create spec-ctrl.h to avoid include hell
Having everything in nospec-branch.h creates a hell of dependencies when
adding the prctl based switching mechanism. Move everything which is not
required in nospec-branch.h to spec-ctrl.h and fix up the includes in the
relevant files.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:25 +0000 (22:04 -0400)]
x86/KVM/VMX: Expose SPEC_CTRL Bit(2) to the guest
Expose the CPUID.7.EDX[31] bit to the guest, and also guard against various
combinations of SPEC_CTRL MSR values.
The handling of the MSR (to take into account the host value of SPEC_CTRL
Bit(2)) is taken care of in patch:
KVM/SVM/VMX/x86/spectre_v2: Support the combination of guest and host IBRS
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:24 +0000 (22:04 -0400)]
x86/bugs/AMD: Add support to disable RDS on Fam[15,16,17]h if requested
AMD does not need the Speculative Store Bypass mitigation to be enabled.
The parameters for this are already available and can be done via MSR
C001_1020. Each family uses a different bit in that MSR for this.
[ tglx: Expose the bit mask via a variable and move the actual MSR fiddling
into the bugs code as that's the right thing to do and also required
to prepare for dynamic enable/disable ]
Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:23 +0000 (22:04 -0400)]
x86/bugs: Whitelist allowed SPEC_CTRL MSR values
Intel and AMD SPEC_CTRL (0x48) MSR semantics may differ in the
future (or in fact use different MSRs for the same functionality).
As such a run-time mechanism is required to whitelist the appropriate MSR
values.
[ tglx: Made the variable __ro_after_init ]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:22 +0000 (22:04 -0400)]
x86/bugs/intel: Set proper CPU features and setup RDS
Intel CPUs expose methods to:
- Detect whether RDS capability is available via CPUID.7.0.EDX[31],
- The SPEC_CTRL MSR(0x48), bit 2 set to enable RDS.
- MSR_IA32_ARCH_CAPABILITIES, Bit(4) no need to enable RRS.
With that in mind if spec_store_bypass_disable=[auto,on] is selected set at
boot-time the SPEC_CTRL MSR to enable RDS if the platform requires it.
Note that this does not fix the KVM case where the SPEC_CTRL is exposed to
guests which can muck with it, see patch titled :
KVM/SVM/VMX/x86/spectre_v2: Support the combination of guest and host IBRS.
And for the firmware (IBRS to be set), see patch titled:
x86/spectre_v2: Read SPEC_CTRL MSR during boot and re-use reserved bits
[ tglx: Distangled it from the intel implementation and kept the call order ]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:21 +0000 (22:04 -0400)]
x86/bugs: Provide boot parameters for the spec_store_bypass_disable mitigation
Contemporary high performance processors use a common industry-wide
optimization known as "Speculative Store Bypass" in which loads from
addresses to which a recent store has occurred may (speculatively) see an
older value. Intel refers to this feature as "Memory Disambiguation" which
is part of their "Smart Memory Access" capability.
Memory Disambiguation can expose a cache side-channel attack against such
speculatively read values. An attacker can create exploit code that allows
them to read memory outside of a sandbox environment (for example,
malicious JavaScript in a web page), or to perform more complex attacks
against code running within the same privilege level, e.g. via the stack.
As a first step to mitigate against such attacks, provide two boot command
line control knobs:
nospec_store_bypass_disable
spec_store_bypass_disable=[off,auto,on]
By default affected x86 processors will power on with Speculative
Store Bypass enabled. Hence the provided kernel parameters are written
from the point of view of whether to enable a mitigation or not.
The parameters are as follows:
- auto - Kernel detects whether your CPU model contains an implementation
of Speculative Store Bypass and picks the most appropriate
mitigation.
- on - disable Speculative Store Bypass
- off - enable Speculative Store Bypass
[ tglx: Reordered the checks so that the whole evaluation is not done
when the CPU does not support RDS ]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Sat, 28 Apr 2018 20:34:17 +0000 (22:34 +0200)]
x86/cpufeatures: Add X86_FEATURE_RDS
Add the CPU feature bit CPUID.7.0.EDX[31] which indicates whether the CPU
supports Reduced Data Speculation.
[ tglx: Split it out from a later patch ]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:20 +0000 (22:04 -0400)]
x86/bugs: Expose /sys/../spec_store_bypass
Add the sysfs file for the new vulerability. It does not do much except
show the words 'Vulnerable' for recent x86 cores.
Intel cores prior to family 6 are known not to be vulnerable, and so are
some Atoms and some Xeon Phi.
It assumes that older Cyrix, Centaur, etc. cores are immune.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:19 +0000 (22:04 -0400)]
x86/bugs, KVM: Support the combination of guest and host IBRS
A guest may modify the SPEC_CTRL MSR from the value used by the
kernel. Since the kernel doesn't use IBRS, this means a value of zero is
what is needed in the host.
But the 336996-Speculative-Execution-Side-Channel-Mitigations.pdf refers to
the other bits as reserved so the kernel should respect the boot time
SPEC_CTRL value and use that.
This allows to deal with future extensions to the SPEC_CTRL interface if
any at all.
Note: This uses wrmsrl() instead of native_wrmsl(). I does not make any
difference as paravirt will over-write the callq *0xfff.. with the wrmsrl
assembler code.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:18 +0000 (22:04 -0400)]
x86/bugs: Read SPEC_CTRL MSR during boot and re-use reserved bits
The 336996-Speculative-Execution-Side-Channel-Mitigations.pdf refers to all
the other bits as reserved. The Intel SDM glossary defines reserved as
implementation specific - aka unknown.
As such at bootup this must be taken it into account and proper masking for
the bits in use applied.
A copy of this document is available at
https://bugzilla.kernel.org/show_bug.cgi?id=199511
[ tglx: Made x86_spec_ctrl_base __ro_after_init ]
Suggested-by: Jon Masters <jcm@redhat.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:17 +0000 (22:04 -0400)]
x86/bugs: Concentrate bug reporting into a separate function
Those SysFS functions have a similar preamble, as such make common
code to handle them.
Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Konrad Rzeszutek Wilk [Thu, 26 Apr 2018 02:04:16 +0000 (22:04 -0400)]
x86/bugs: Concentrate bug detection into a separate function
Combine the various logic which goes through all those
x86_cpu_id matching structures in one function.
Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Linus Torvalds [Tue, 1 May 2018 13:55:51 +0000 (15:55 +0200)]
x86/nospec: Simplify alternative_msr_write()
The macro is not type safe and I did look for why that "g" constraint for
the asm doesn't work: it's because the asm is more fundamentally wrong.
It does
movl %[val], %%eax
but "val" isn't a 32-bit value, so then gcc will pass it in a register,
and generate code like
movl %rsi, %eax
and gas will complain about a nonsensical 'mov' instruction (it's moving a
64-bit register to a 32-bit one).
Passing it through memory will just hide the real bug - gcc still thinks
the memory location is 64-bit, but the "movl" will only load the first 32
bits and it all happens to work because x86 is little-endian.
Convert it to a type safe inline function with a little trick which hands
the feature into the ALTERNATIVE macro.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Thomas Gleixner [Mon, 30 Apr 2018 19:47:46 +0000 (21:47 +0200)]
x86/cpu: Restore CPUID_8000_0008_EBX reload
The recent commt which addresses the x86_phys_bits corruption with
encrypted memory on CPUID reload after a microcode update lost the reload
of CPUID_8000_0008_EBX as well.
As a consequence IBRS and IBRS_FW are not longer detected
Restore the behaviour by bringing the reload of CPUID_8000_0008_EBX
back. This restore has a twist due to the convoluted way the cpuid analysis
works:
CPUID_8000_0008_EBX is used by AMD to enumerate IBRB, IBRS, STIBP. On Intel
EBX is not used. But the speculation control code sets the AMD bits when
running on Intel depending on the Intel specific speculation control
bits. This was done to use the same bits for alternatives.
The change which moved the 8000_0008 evaluation out of get_cpu_cap() broke
this nasty scheme due to ordering. So that on Intel the store to
CPUID_8000_0008_EBX clears the IBRB, IBRS, STIBP bits which had been set
before by software.
So the actual CPUID_8000_0008_EBX needs to go back to the place where it
was and the phys/virt address space calculation cannot touch it.
In hindsight this should have used completely synthetic bits for IBRB,
IBRS, STIBP instead of reusing the AMD bits, but that's for 4.18.
/me needs to find time to cleanup that steaming pile of ...
Fixes: d94a155c59c9 ("x86/cpu: Prevent cpuinfo_x86::x86_phys_bits adjustment corruption")
Reported-by: Jörg Otte <jrg.otte@gmail.com>
Reported-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jörg Otte <jrg.otte@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: kirill.shutemov@linux.intel.com
Cc: Borislav Petkov <bp@alien8.de
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1805021043510.1668@nanos.tec.linutronix.de
Linus Torvalds [Sun, 29 Apr 2018 21:17:42 +0000 (14:17 -0700)]
Linux v4.17-rc3
Linus Torvalds [Sun, 29 Apr 2018 17:06:05 +0000 (10:06 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./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
Linus Torvalds [Sun, 29 Apr 2018 16:36:22 +0000 (09:36 -0700)]
Merge branch 'x86-pti-for-linus' of git://git./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
Linus Torvalds [Sun, 29 Apr 2018 16:03:25 +0000 (09:03 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./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
Linus Torvalds [Sun, 29 Apr 2018 15:58:50 +0000 (08:58 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./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
Linus Torvalds [Sun, 29 Apr 2018 03:07:21 +0000 (20:07 -0700)]
Merge tag 'for_linus_stable' of git://git./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
Amir Goldstein [Mon, 5 Feb 2018 17:32:18 +0000 (19:32 +0200)]
<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>
David Sterba [Sat, 28 Apr 2018 17:05:04 +0000 (19:05 +0200)]
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>
Linus Torvalds [Sat, 28 Apr 2018 17:06:16 +0000 (10:06 -0700)]
Merge branch 'i2c/for-current' of git://git./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
Linus Torvalds [Sat, 28 Apr 2018 17:02:44 +0000 (10:02 -0700)]
Merge branch 'linus' of git://git./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
Linus Torvalds [Sat, 28 Apr 2018 16:51:56 +0000 (09:51 -0700)]
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
Linus Torvalds [Sat, 28 Apr 2018 16:45:34 +0000 (09:45 -0700)]
Merge tag 'powerpc-4.17-4' of git://git./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
Linus Torvalds [Fri, 27 Apr 2018 23:13:31 +0000 (16:13 -0700)]
rMerge tag 'for-linus' of git://git./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
Linus Torvalds [Fri, 27 Apr 2018 18:14:25 +0000 (11:14 -0700)]
Merge tag 'arm64-fixes' of git://git./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
Linus Torvalds [Fri, 27 Apr 2018 18:01:21 +0000 (11:01 -0700)]
Merge tag 'modules-for-v4.17-rc3' of git://git./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
Linus Torvalds [Fri, 27 Apr 2018 17:56:29 +0000 (10:56 -0700)]
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
Linus Torvalds [Fri, 27 Apr 2018 17:39:38 +0000 (10:39 -0700)]
Merge tag 'char-misc-4.17-rc3' of git://git./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.
Linus Torvalds [Fri, 27 Apr 2018 17:12:20 +0000 (10:12 -0700)]
Merge tag 'driver-core-4.17-rc3' of git://git./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
Linus Torvalds [Fri, 27 Apr 2018 17:03:38 +0000 (10:03 -0700)]
Merge tag 'tty-4.17-rc3' of git://git./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
KarimAllah Ahmed [Tue, 17 Apr 2018 04:43:58 +0000 (06:43 +0200)]
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>
Linus Torvalds [Fri, 27 Apr 2018 16:37:12 +0000 (09:37 -0700)]
Merge tag 'staging-4.17-rc3' of git://git./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
Linus Torvalds [Fri, 27 Apr 2018 16:32:20 +0000 (09:32 -0700)]
Merge tag 'usb-4.17-rc3' of git://git./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.
...
Linus Torvalds [Fri, 27 Apr 2018 16:29:18 +0000 (09:29 -0700)]
Merge tag 'sound-4.17-rc3' of git://git./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
...
Linus Torvalds [Fri, 27 Apr 2018 16:22:06 +0000 (09:22 -0700)]
Merge tag 'armsoc-fixes' of git://git./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
Linus Torvalds [Fri, 27 Apr 2018 16:15:06 +0000 (09:15 -0700)]
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
e7bfb3fdbde3 ("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
Linus Torvalds [Fri, 27 Apr 2018 16:06:22 +0000 (09:06 -0700)]
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
...
Junaid Shahid [Thu, 26 Apr 2018 20:09:50 +0000 (13:09 -0700)]
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>
Andy Lutomirski [Tue, 17 Apr 2018 14:36:36 +0000 (07:36 -0700)]
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
Arnd Bergmann [Tue, 24 Apr 2018 21:19:51 +0000 (23:19 +0200)]
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
73a2d096fdf2 ("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: f4b4aae18288 ("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
Petr Tesarik [Wed, 25 Apr 2018 10:08:35 +0000 (12:08 +0200)]
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
Baolin Wang [Mon, 9 Apr 2018 06:40:55 +0000 (14:40 +0800)]
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>
Baolin Wang [Mon, 9 Apr 2018 06:40:54 +0000 (14:40 +0800)]
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>
Alexander Popov [Thu, 19 Apr 2018 12:29:22 +0000 (15:29 +0300)]
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>
Mark Rutland [Fri, 27 Apr 2018 10:50:36 +0000 (11:50 +0100)]
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>
Arnd Bergmann [Fri, 27 Apr 2018 08:20:57 +0000 (10:20 +0200)]
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
Laurentiu Tudor [Thu, 26 Apr 2018 12:33:19 +0000 (15:33 +0300)]
powerpc/kvm/booke: Fix altivec related build break
Add missing "altivec unavailable" interrupt injection helper
thus fixing the linker error below:
arch/powerpc/kvm/emulate_loadstore.o: In function `kvmppc_check_altivec_disabled':
arch/powerpc/kvm/emulate_loadstore.c: undefined reference to `.kvmppc_core_queue_vec_unavail'
Fixes: 09f984961c137c4b ("KVM: PPC: Book3S: Add MMIO emulation for VMX instructions")
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Nicholas Piggin [Fri, 27 Apr 2018 01:51:59 +0000 (11:51 +1000)]
powerpc: Fix deadlock with multiple calls to smp_send_stop
smp_send_stop can lock up the IPI path for any subsequent calls,
because the receiving CPUs spin in their handler function. This
started becoming a problem with the addition of an smp_send_stop
call in the reboot path, because panics can reboot after doing
their own smp_send_stop.
The NMI IPI variant was fixed with
ac61c11566 ("powerpc: Fix
smp_send_stop NMI IPI handling"), which leaves the smp_call_function
variant.
This is fixed by having smp_send_stop only ever do the
smp_call_function once. This is a bit less robust than the NMI IPI
fix, because any other call to smp_call_function after smp_send_stop
could deadlock, but that has always been the case, and it was not
been a problem before.
Fixes: f2748bdfe1573 ("powerpc/powernv: Always stop secondaries before reboot/shutdown")
Reported-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Shilpasri G Bhat [Wed, 25 Apr 2018 10:59:31 +0000 (16:29 +0530)]
cpufreq: powernv: Fix hardlockup due to synchronous smp_call in timer interrupt
gpstate_timer_handler() uses synchronous smp_call to set the pstate
on the requested core. This causes the below hard lockup:
smp_call_function_single+0x110/0x180 (unreliable)
smp_call_function_any+0x180/0x250
gpstate_timer_handler+0x1e8/0x580
call_timer_fn+0x50/0x1c0
expire_timers+0x138/0x1f0
run_timer_softirq+0x1e8/0x270
__do_softirq+0x158/0x3e4
irq_exit+0xe8/0x120
timer_interrupt+0x9c/0xe0
decrementer_common+0x114/0x120
-- interrupt: 901 at doorbell_global_ipi+0x34/0x50
LR = arch_send_call_function_ipi_mask+0x120/0x130
arch_send_call_function_ipi_mask+0x4c/0x130
smp_call_function_many+0x340/0x450
pmdp_invalidate+0x98/0xe0
change_huge_pmd+0xe0/0x270
change_protection_range+0xb88/0xe40
mprotect_fixup+0x140/0x340
SyS_mprotect+0x1b4/0x350
system_call+0x58/0x6c
One way to avoid this is removing the smp-call. We can ensure that the
timer always runs on one of the policy-cpus. If the timer gets
migrated to a cpu outside the policy then re-queue it back on the
policy->cpus. This way we can get rid of the smp-call which was being
used to set the pstate on the policy->cpus.
Fixes: 7bc54b652f13 ("timers, cpufreq/powernv: Initialize the gpstate timer as pinned")
Cc: stable@vger.kernel.org # v4.8+
Reported-by: Nicholas Piggin <npiggin@gmail.com>
Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Dave Airlie [Fri, 27 Apr 2018 04:08:47 +0000 (14:08 +1000)]
Merge tag 'drm-intel-fixes-2018-04-26' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Fix for black screen issues (FDO #104158 and #104425)
- A correction for wrongly applied display W/A
- Fixes for HDA codec interop issue (no audio) and too eager HW timeouts
* tag 'drm-intel-fixes-2018-04-26' of git://anongit.freedesktop.org/drm/drm-intel:
drm/i915/fbdev: Enable late fbdev initial configuration
drm/i915: Use ktime on wait_for
drm/i915: Enable display WA#1183 from its correct spot
drm/i915/audio: set minimum CD clock to twice the BCLK
Linus Torvalds [Thu, 26 Apr 2018 23:36:11 +0000 (16:36 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull virtio fixups from Michael Tsirkin:
- Latest header update will break QEMU (if it's rebuilt with the new
header) - and it seems that the code there is so fragile that any
change in this header will break it. Add a better interface so users
do not need to change their code every time that header changes.
- Fix virtio console for spec compliance.
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio_console: reset on out of memory
virtio_console: move removal code
virtio_console: drop custom control queue cleanup
virtio_console: free buffers after reset
virtio: add ability to iterate over vqs
virtio_console: don't tie bufs to a vq
virtio_balloon: add array of stat names
Linus Torvalds [Thu, 26 Apr 2018 23:33:54 +0000 (16:33 -0700)]
Merge tag 'hwmon-for-linus-v4.17-rc3' of git://git./linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Add support for new Ryzen chips to k10temp driver
... making Phoronix happy
- Fix inconsistent chip access in nct6683 driver
- Handle absence of few types of sensors in scmi driver
* tag 'hwmon-for-linus-v4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (k10temp) Add support for AMD Ryzen w/ Vega graphics
hwmon: (k10temp) Add temperature offset for Ryzen 2700X
hwmon: (nct6683) Enable EC access if disabled at boot
hwmon: (scmi) handle absence of few types of sensors
Linus Torvalds [Thu, 26 Apr 2018 23:28:24 +0000 (16:28 -0700)]
Merge tag 'pci-v4.17-fixes-1' of git://git./linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
- fix Aardvark MRRS setting (Evan Wang)
- clarify "bandwidth available" link status message (Jakub Kicinski)
- update Kirin GPIO name to fix probe failure (Loic Poulain)
- fix Aardvark IRQ usage (Victor Gu)
- fix Aardvark config accessor issues (Victor Gu)
* tag 'pci-v4.17-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Add "PCIe" to pcie_print_link_status() messages
PCI: kirin: Fix reset gpio name
PCI: aardvark: Fix PCIe Max Read Request Size setting
PCI: aardvark: Use ISR1 instead of ISR0 interrupt in legacy irq mode
PCI: aardvark: Set PIO_ADDR_LS correctly in advk_pcie_rd_conf()
PCI: aardvark: Fix logic in advk_pcie_{rd,wr}_conf()
Linus Torvalds [Thu, 26 Apr 2018 23:22:47 +0000 (16:22 -0700)]
Merge tag 'trace-v4.17-rc1' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- Add workqueue forward declaration (for new work, but a nice clean up)
- seftest fixes for the new histogram code
- Print output fix for hwlat tracer
- Fix missing system call events - due to change in x86 syscall naming
- Fix kprobe address being used by perf being hashed
* tag 'trace-v4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix missing tab for hwlat_detector print format
selftests: ftrace: Add a testcase for multiple actions on trigger
selftests: ftrace: Fix trigger extended error testcase
kprobes: Fix random address output of blacklist file
tracing: Fix kernel crash while using empty filter with perf
tracing/x86: Update syscall trace events to handle new prefixed syscall func names
tracing: Add missing forward declaration
jacek.tomaka@poczta.fm [Mon, 23 Apr 2018 16:14:25 +0000 (00:14 +0800)]
x86/cpu/intel: Add missing TLB cpuid values
Make kernel print the correct number of TLB entries on Intel Xeon Phi 7210
(and others)
Before:
[ 0.320005] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
After:
[ 0.320005] Last level dTLB entries: 4KB 256, 2MB 128, 4MB 128, 1GB 16
The entries do exist in the official Intel SMD but the type column there is
incorrect (states "Cache" where it should read "TLB"), but the entries for
the values 0x6B, 0x6C and 0x6D are correctly described as 'Data TLB'.
Signed-off-by: Jacek Tomaka <jacek.tomaka@poczta.fm>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20180423161425.24366-1-jacekt@dugeo.com
Linus Torvalds [Thu, 26 Apr 2018 18:06:36 +0000 (11:06 -0700)]
Merge tag 'acpi-4.17-rc3' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These are two watchdog-related fixes, fix for a backlight regression
from the 4.16 cycle that unfortunately was propagated to -stable and a
button module modification to prevent graphics driver modules from
failing to load due to unmet dependencies if ACPI is disabled from the
kernel command line.
Specifics:
- Change the ACPI subsystem initialization ordering to initialize the
WDAT watchodg before reserving PNP motherboard resources so as to
allow the watchdog to allocate its resources before the PNP code
gets to them and prevents it from working correctly (Mika
Westerberg).
- Add a quirk for Lenovo Z50-70 to use the iTCO watchdog instead of
the WDAT one which conflicts with the RTC on that platform (Mika
Westerberg).
- Avoid breaking backlight handling on Dell XPS 13 2013 model by
allowing laptops to use the ACPI backlight by default even if they
are Windows 8-ready in principle (Hans de Goede)"
* tag 'acpi-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / video: Only default only_lcd to true on Win8-ready _desktops_
ACPI / button: make module loadable when booted in non-ACPI mode
ACPI / watchdog: Prefer iTCO_wdt on Lenovo Z50-70
ACPI / scan: Initialize watchdog before PNP
Linus Torvalds [Thu, 26 Apr 2018 18:03:02 +0000 (11:03 -0700)]
Merge tag 'pm-4.17-rc3' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These are a Low Power S0 Idle quirk, a hibernation handling fix for
the PCI bus type and a brcmstb-avs-cpufreq driver fixup removing
development debug code from it.
Specifics:
- Blacklist the Low Power S0 Idle _DSM on ThinkPad X1 Tablet(2016)
where it causes issues and make it use ACPI S3 which works instead
of the non-working suspend-to-idle by default (Chen Yu).
- Fix the handling of hibernation in the PCI core for devices with
the DPM_FLAG_SMART_SUSPEND flag set to fix a regression affecting
intel-lpss I2C devices (Mika Westerberg).
- Drop development debug code from the brcmstb-avs-cpufreq driver
(Markus Mayer)"
* tag 'pm-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: brcmstb-avs-cpufreq: remove development debug support
PCI / PM: Do not clear state_saved in pci_pm_freeze() when smart suspend is set
ACPI / PM: Blacklist Low Power S0 Idle _DSM for ThinkPad X1 Tablet(2016)
Linus Torvalds [Thu, 26 Apr 2018 17:59:56 +0000 (10:59 -0700)]
Merge tag 'random_for_linus_stable' of git://git./linux/kernel/git/tytso/random
Pull /dev/random fixes from Ted Ts'o:
"Fix a regression on NUMA kernels and suppress excess unseeded entropy
pool warnings"
* tag 'random_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: rate limit unseeded randomness warnings
random: fix possible sleeping allocation from irq context
Linus Torvalds [Thu, 26 Apr 2018 17:29:46 +0000 (10:29 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"A couple of bug fixes:
- correct some CPU-MF counter names for z13 and z14
- correct locking in the vfio-ccw fsm_io_helper function
- provide arch_uretprobe_is_alive to avoid sigsegv with uretprobes
- fix a corner case with CPU-MF sampling in regard to execve
- fix expoline code revert for loadable modules
- update chpid descriptor for resource accessibility events
- fix dasd I/O errors due to outdated device alias infomation"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: correct module section names for expoline code revert
vfio: ccw: process ssch with interrupts disabled
s390: update sampling tag after task pid change
s390/cpum_cf: rename IBM z13/z14 counter names
s390/dasd: fix IO error for newly defined devices
s390/uprobes: implement arch_uretprobe_is_alive()
s390/cio: update chpid descriptor after resource accessibility event
Greg Kroah-Hartman [Thu, 26 Apr 2018 17:29:24 +0000 (19:29 +0200)]
Merge tag 'usb-serial-4.17-rc3' of https://git./linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.17-rc3
Here are a few device ids for -rc3, including a new "simple driver".
All have been in linux-next with no reported issues.
Signed-off-by: Johan Hovold <johan@kernel.org>
Miquel Raynal [Wed, 25 Apr 2018 14:16:32 +0000 (16:16 +0200)]
mtd: rawnand: marvell: fix the chip-select DT parsing logic
The block responsible of parsing the DT for the number of chip-select
lines uses an 'if/else if/else if' block. The content of the second and
third 'else if' conditions are:
1/ the actual condition to enter the sub-block and
2/ the operation to do in this sub-block.
[...]
else if (condition1_to_enter && action1() == failed)
raise_error();
else if (condition2_to_enter && action2() == failed)
raise_error();
[...]
In case of failure, the sub-block is entered and an error raised.
Otherwise, in case of success, the code would continue erroneously in
the next 'else if' statement because it did not failed (and did not
enter the first 'else if' sub-block).
The first 'else if' refers to legacy bindings while the second 'else if'
refers to new bindings. The second 'else if', which is entered
erroneously, checks for the 'reg' property, which, for old bindings,
does not mean anything because it would not be the number of CS
available, but the regular register map of almost any DT node. This
being said, the content of the 'reg' property being the register map
offset and length, it has '2' values, so the number of CS in this
situation is assumed to be '2'.
When running nand_scan_ident() with 2 CS, the core will check for an
array of chips. It will first issue a RESET and then a READ_ID. Of
course this will trigger two timeouts because there is no chip in front
of the second CS:
[ 1.367460] marvell-nfc
f2720000.nand: Timeout on CMDD (NDSR: 0x00000080)
[ 1.474292] marvell-nfc
f2720000.nand: Timeout on CMDD (NDSR: 0x00000280)
Indeed, this is harmless and the core will then assume there is only one
valid CS.
Fix the logic in the whole block by entering each sub-block just on the
'is legacy' condition, doing the action inside the sub-block. This way,
when the action succeeds, the whole block is left.
Furthermore, for both the old bindings and the new bindings the same
logic was applied to retrieve the number of CS lines:
using of_get_property() to get a size in bytes, converted in the actual
number of lines by dividing it per sizeof(u32) (4 bytes).
This is fine for the 'reg' property which is a list of the CS IDs but
not for the 'num-cs' property which is directly the value of the number
of CS.
Anyway, no existing DT uses another value than 'num-cs = <1>' and no
other value has ever been supported by the old driver (pxa3xx_nand.c).
Remove this condition and apply a number of 1 CS anyway, as already
described in the bindings.
Finally, the 'reg' property of a 'nand' node (with the new bindings)
gives the IDs of each CS line in use. marvell_nand.c driver first look
at the number of CS lines that are present in this property.
Better use of_property_count_elems_of_size() than dividing by 4 the size
of the number of bytes returned by of_get_property().
Fixes: 02f26ecf8c772 ("mtd: nand: add reworked Marvell NAND controller driver")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Mark Rutland [Wed, 25 Apr 2018 16:13:42 +0000 (17:13 +0100)]
KVM: arm/arm64: vgic: fix possible spectre-v1 in vgic_mmio_read_apr()
It's possible for userspace to control n. Sanitize n when using it as an
array index.
Note that while it appears that n must be bound to the interval [0,3]
due to the way it is extracted from addr, we cannot guarantee that
compiler transformations (and/or future refactoring) will ensure this is
the case, and given this is a slow path it's better to always perform
the masking.
Found by smatch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: kvmarm@lists.cs.columbia.edu
Signed-off-by: Will Deacon <will.deacon@arm.com>
Mark Rutland [Wed, 25 Apr 2018 16:13:41 +0000 (17:13 +0100)]
KVM: arm/arm64: vgic: fix possible spectre-v1 in vgic_get_irq()
It's possible for userspace to control intid. Sanitize intid when using
it as an array index.
At the same time, sort the includes when adding <linux/nospec.h>.
Found by smatch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: kvmarm@lists.cs.columbia.edu
Signed-off-by: Will Deacon <will.deacon@arm.com>
Mark Rutland [Wed, 25 Apr 2018 16:13:40 +0000 (17:13 +0100)]
arm64: fix possible spectre-v1 in ptrace_hbp_get_event()
It's possible for userspace to control idx. Sanitize idx when using it
as an array index.
Found by smatch.
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>
Ilya Dryomov [Tue, 24 Apr 2018 17:10:55 +0000 (19:10 +0200)]
libceph: validate con->state at the top of try_write()
ceph_con_workfn() validates con->state before calling try_read() and
then try_write(). However, try_read() temporarily releases con->mutex,
notably in process_message() and ceph_con_in_msg_alloc(), opening the
window for ceph_con_close() to sneak in, close the connection and
release con->sock. When try_write() is called on the assumption that
con->state is still valid (i.e. not STANDBY or CLOSED), a NULL sock
gets passed to the networking stack:
BUG: unable to handle kernel NULL pointer dereference at
0000000000000020
IP: selinux_socket_sendmsg+0x5/0x20
Make sure con->state is valid at the top of try_write() and add an
explicit BUG_ON for this, similar to try_read().
Cc: stable@vger.kernel.org
Link: https://tracker.ceph.com/issues/23706
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Linus Walleij [Fri, 20 Apr 2018 09:00:44 +0000 (11:00 +0200)]
ARM: defconfig: Update Gemini defconfig
This updates the Gemini defconfig with a config that will bring
up most of the recently merged and updated devices to some
functional level:
- We enable high resolution timers (the right thing to do)
- Enable CMA for the framebuffer, and the new TVE200
framebuffer driver and the Ilitek ILI9322 driver for
graphics on the D-Link DIR-685. HIGHMEM support comes in
as part of this.
- Enable networking and the new Cortina Gemini ethernet
driver.
- Enable MDIO over GPIO and the Realtek PHY devices used on
several of these systems.
- Enable I2C over GPIO and SPI over GPIO which is used on
several of these devices.
- Enable the Thermal framework, GPIO fan control and LM75 sensor
adding cooling on the D-Link DNS-313 with no userspace
involved even if only the kernel is working, rock solid
thermal for this platform.
- Enable JEDEC flash probing to support the Eon flash chip in
D-Link DNS-313.
- Enable LED disk triggers for the NAS type devices.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Linus Walleij [Mon, 23 Apr 2018 11:57:00 +0000 (13:57 +0200)]
ARM: s3c24xx: jive: Fix some GPIO names
One of the bitbanged SPI hosts had wrongly named GPIO lines due to
sloppiness by yours truly.
Cc: arm@kernel.org
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arnd Bergmann [Thu, 26 Apr 2018 14:54:12 +0000 (16:54 +0200)]
Merge tag 'omap-for-v4.17/fixes-signed' of git://git./linux/kernel/git/tmlind/linux-omap into fixes
Pull "Two fixes for v4.17-rc cycle" from Tony Lindgren:
Fix a build regression with split object directories reported by Russell
and fix range sizes for omap4 cm2 and prm modules.
* tag 'omap-for-v4.17/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Fix build when using split object directories
ARM: dts: Fix cm2 and prm sizes for omap4
John Garry [Thu, 19 Apr 2018 14:14:02 +0000 (22:14 +0800)]
HISI LPC: Add Kconfig MFD_CORE dependency
For ACPI support of the HiSilicon LPC driver we depend
on MFD_CORE config.
Currently the HiSi LPC Kconfig entry does not define this
dependency, so add it.
The reason for depending on MFD_CORE in the driver is
that we model the LPC host as an MFD, in that a platform
device will be created for each device on the bus.
We do this as we need to modify the resources of these
derived platform devices, something which we should not
do to the original devices created in the ACPI scan.
Details in
e0aa1563f894 ("HISI LPC: Add ACPI support").
Fixes: e0aa1563f894 ("HISI LPC: Add ACPI support")
Reported-and-tested-by: Tan Xiaojun <tanxiaojun@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arnd Bergmann [Thu, 26 Apr 2018 14:51:26 +0000 (16:51 +0200)]
Merge tag 'amlogic-fixes' of git://git./linux/kernel/git/khilman/linux-amlogic into fixes
Pull "Amlogic fixes for v4.17-rc1" from Kevin Hilman:
- add / enable USB host support for GX boards
* tag 'amlogic-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
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
Linus Walleij [Tue, 17 Apr 2018 08:53:11 +0000 (10:53 +0200)]
ARM: dts: Fix NAS4220B pin config
The DTS file for the NAS4220B had the pin config for the
ethernet interface set to the pins in the SL3512 SoC while
this system is using SL3516. Fix it by referencing the
right SL3516 pins instead of the SL3512 pins.
Cc: stable@vger.kernel.org
Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Reported-by: Andreas Fiedler <andreas.fiedler@gmx.net>
Reported-by: Roman Yeryomin <roman@advem.lv>
Tested-by: Roman Yeryomin <roman@advem.lv>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Niklas Cassel [Tue, 17 Apr 2018 12:53:08 +0000 (14:53 +0200)]
MAINTAINERS: Remove myself as maintainer
I am leaving Axis, so this address will bounce in the not too
distant future.
Fortunately, I will still be working with the community.
Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arnd Bergmann [Thu, 26 Apr 2018 14:48:35 +0000 (16:48 +0200)]
Merge tag 'scmi-fixes-4.17' of ssh://gitolite./linux/kernel/git/sudeep.holla/linux into fixes
SCMI fix for v4.17
A single patch eliminating the redundant null pointer check detected
by CoverityScan("Array compared against 0")
* tag 'scmi-fixes-4.17' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
firmware: arm_scmi: remove redundant null check on array
Arnd Bergmann [Thu, 26 Apr 2018 14:47:34 +0000 (16:47 +0200)]
Merge tag 'juno-fixes-4.17' of ssh://gitolite./linux/kernel/git/sudeep.holla/linux into fixes
Pull "ARMv8 Juno DT fix for v4.17" from Sudeep Holla:
A single patch to fix the new DTC warnings probably enabled during
v4.17 merge window.
* tag 'juno-fixes-4.17' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
arm64: dts: juno: drop unnecessary address-cells and size-cells properties
Arnd Bergmann [Thu, 26 Apr 2018 14:45:54 +0000 (16:45 +0200)]
Merge tag 'arm-soc/for-4.17/drivers-fixes' of https://github.com/Broadcom/stblinux into fixes
This pull request contains Broadcom SoCs drivers fixes, please pull the
following:
- Geert makes the Raspberry Pi firmwware return -ENOSYS (similar to
other subsystems) when CONFIG_RASPBERRYPI_FIRMWARE is off.
- Florian fixes an incorrect annotation in the Raspberry Pi power domain
driver, spotted by sparse
* tag 'arm-soc/for-4.17/drivers-fixes' of https://github.com/Broadcom/stblinux:
soc: bcm2835: Make !RASPBERRYPI_FIRMWARE dummies return failure
soc: bcm: raspberrypi-power: Fix use of __packed
Arnd Bergmann [Thu, 26 Apr 2018 14:44:54 +0000 (16:44 +0200)]
Merge tag 'socfpga_defconfig_fix_v4.17' of git://git./linux/kernel/git/dinguyen/linux into fixes
ARM: socfpga_defconfig: fix QSPI Sector 4k
- disable CONFIG_MTD_SPI_NOR_USE_4K_SECTORS
* tag 'socfpga_defconfig_fix_v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
ARM: socfpga_defconfig: Remove QSPI Sector 4K size force
Yazen Ghannam [Tue, 3 Apr 2018 14:02:28 +0000 (09:02 -0500)]
x86/smpboot: Don't use mwait_play_dead() on AMD systems
Recent AMD systems support using MWAIT for C1 state. However, MWAIT will
not allow deeper cstates than C1 on current systems.
play_dead() expects to use the deepest state available. The deepest state
available on AMD systems is reached through SystemIO or HALT. If MWAIT is
available, it is preferred over the other methods, so the CPU never reaches
the deepest possible state.
Don't try to use MWAIT to play_dead() on AMD systems. Instead, use CPUIDLE
to enter the deepest state advertised by firmware. If CPUIDLE is not
available then fallback to HALT.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Cc: Yazen Ghannam <Yazen.Ghannam@amd.com>
Link: https://lkml.kernel.org/r/20180403140228.58540-1-Yazen.Ghannam@amd.com
Takashi Sakamoto [Thu, 26 Apr 2018 13:00:29 +0000 (22:00 +0900)]
ALSA: dice: fix error path to destroy initialized stream data
In error path of snd_dice_stream_init_duplex(), stream data for incoming
packet can be left to be initialized.
This commit fixes it.
Fixes: 436b5abe2224 ('ALSA: dice: handle whole available isochronous streams')
Cc: <stable@vger.kernel.org> # v4.6+
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Rafael J. Wysocki [Thu, 26 Apr 2018 13:11:39 +0000 (15:11 +0200)]
Merge branches 'acpi-watchdog', 'acpi-button' and 'acpi-video'
* acpi-watchdog:
ACPI / watchdog: Prefer iTCO_wdt on Lenovo Z50-70
* acpi-button:
ACPI / button: make module loadable when booted in non-ACPI mode
* acpi-video:
ACPI / video: Only default only_lcd to true on Win8-ready _desktops_
Rafael J. Wysocki [Thu, 26 Apr 2018 13:10:25 +0000 (15:10 +0200)]
Merge branches 'acpi-pm' and 'pm-cpufreq'
* acpi-pm:
ACPI / PM: Blacklist Low Power S0 Idle _DSM for ThinkPad X1 Tablet(2016)
* pm-cpufreq:
cpufreq: brcmstb-avs-cpufreq: remove development debug support
Jiri Kosina [Thu, 12 Apr 2018 12:39:10 +0000 (14:39 +0200)]
x86/mm: Make vmemmap and vmalloc base address constants unsigned long
Commits
9b46a051e4 ("x86/mm: Initialize vmemmap_base at boot-time") and
a7412546d8 ("x86/mm: Adjust vmalloc base and size at boot-time") lost the
type information for __VMALLOC_BASE_L4, __VMALLOC_BASE_L5,
__VMEMMAP_BASE_L4 and __VMEMMAP_BASE_L5 constants.
Declare them explicitly unsigned long again.
Fixes: 9b46a051e4 ("x86/mm: Initialize vmemmap_base at boot-time")
Fixes: a7412546d8 ("x86/mm: Adjust vmalloc base and size at boot-time")
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Link: https://lkml.kernel.org/r/nycvar.YFH.7.76.1804121437350.28129@cbobk.fhfr.pm
Thomas Gleixner [Wed, 25 Apr 2018 13:33:38 +0000 (15:33 +0200)]
Revert: Unify CLOCK_MONOTONIC and CLOCK_BOOTTIME
Revert commits
92af4dcb4e1c ("tracing: Unify the "boot" and "mono" tracing clocks")
127bfa5f4342 ("hrtimer: Unify MONOTONIC and BOOTTIME clock behavior")
7250a4047aa6 ("posix-timers: Unify MONOTONIC and BOOTTIME clock behavior")
d6c7270e913d ("timekeeping: Remove boot time specific code")
f2d6fdbfd238 ("Input: Evdev - unify MONOTONIC and BOOTTIME clock behavior")
d6ed449afdb3 ("timekeeping: Make the MONOTONIC clock behave like the BOOTTIME clock")
72199320d49d ("timekeeping: Add the new CLOCK_MONOTONIC_ACTIVE clock")
As stated in the pull request for the unification of CLOCK_MONOTONIC and
CLOCK_BOOTTIME, it was clear that we might have to revert the change.
As reported by several folks systemd and other applications rely on the
documented behaviour of CLOCK_MONOTONIC on Linux and break with the above
changes. After resume daemons time out and other timeout related issues are
observed. Rafael compiled this list:
* systemd kills daemons on resume, after >WatchdogSec seconds
of suspending (Genki Sky). [Verified that that's because systemd uses
CLOCK_MONOTONIC and expects it to not include the suspend time.]
* systemd-journald misbehaves after resume:
systemd-journald[7266]: File /var/log/journal/
016627c3c4784cd4812d4b7e96a34226/system.journal
corrupted or uncleanly shut down, renaming and replacing.
(Mike Galbraith).
* NetworkManager reports "networking disabled" and networking is broken
after resume 50% of the time (Pavel). [May be because of systemd.]
* MATE desktop dims the display and starts the screensaver right after
system resume (Pavel).
* Full system hang during resume (me). [May be due to systemd or NM or both.]
That happens on debian and open suse systems.
It's sad, that these problems were neither catched in -next nor by those
folks who expressed interest in this change.
Reported-by: Rafael J. Wysocki <rjw@rjwysocki.net>
Reported-by: Genki Sky <sky@genki.is>,
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kevin Easton <kevin@guarana.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salyzyn <salyzyn@android.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Thomas Gleixner [Tue, 24 Apr 2018 19:22:18 +0000 (21:22 +0200)]
tick/sched: Do not mess with an enqueued hrtimer
Kaike reported that in tests rdma hrtimers occasionaly stopped working. He
did great debugging, which provided enough context to decode the problem.
CPU 3 CPU 2
idle
start sched_timer expires =
712171000000
queue->next = sched_timer
start rdmavt timer. expires =
712172915662
lock(baseof(CPU3))
tick_nohz_stop_tick()
tick =
716767000000 timerqueue_add(tmr)
hrtimer_set_expires(sched_timer, tick);
sched_timer->expires =
716767000000 <---- FAIL
if (tmr->expires < queue->next->expires)
hrtimer_start(sched_timer) queue->next = tmr;
lock(baseof(CPU3))
unlock(baseof(CPU3))
timerqueue_remove()
timerqueue_add()
ts->sched_timer is queued and queue->next is pointing to it, but then
ts->sched_timer.expires is modified.
This not only corrupts the ordering of the timerqueue RB tree, it also
makes CPU2 see the new expiry time of timerqueue->next->expires when
checking whether timerqueue->next needs to be updated. So CPU2 sees that
the rdma timer is earlier than timerqueue->next and sets the rdma timer as
new next.
Depending on whether it had also seen the new time at RB tree enqueue, it
might have queued the rdma timer at the wrong place and then after removing
the sched_timer the RB tree is completely hosed.
The problem was introduced with a commit which tried to solve inconsistency
between the hrtimer in the tick_sched data and the underlying hardware
clockevent. It split out hrtimer_set_expires() to store the new tick time
in both the NOHZ and the NOHZ + HIGHRES case, but missed the fact that in
the NOHZ + HIGHRES case the hrtimer might still be queued.
Use hrtimer_start(timer, tick...) for the NOHZ + HIGHRES case which sets
timer->expires after canceling the timer and move the hrtimer_set_expires()
invocation into the NOHZ only code path which is not affected as it merily
uses the hrtimer as next event storage so code pathes can be shared with
the NOHZ + HIGHRES case.
Fixes: d4af6d933ccf ("nohz: Fix spurious warning when hrtimer and clockevent get out of sync")
Reported-by: "Wan Kaike" <kaike.wan@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Cc: "Marciniszyn Mike" <mike.marciniszyn@intel.com>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: linux-rdma@vger.kernel.org
Cc: "Dalessandro Dennis" <dennis.dalessandro@intel.com>
Cc: "Fleck John" <john.fleck@intel.com>
Cc: stable@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: "Weiny Ira" <ira.weiny@intel.com>
Cc: "linux-rdma@vger.kernel.org"
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1804241637390.1679@nanos.tec.linutronix.de
Link: https://lkml.kernel.org/r/alpine.DEB.2.21.1804242119210.1597@nanos.tec.linutronix.de
Dou Liyang [Thu, 26 Apr 2018 06:08:32 +0000 (14:08 +0800)]
x86/vector: Remove the unused macro FPU_IRQ
The macro FPU_IRQ has never been used since v3.10, So remove it.
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/20180426060832.27312-1-douly.fnst@cn.fujitsu.com
Geert Uytterhoeven [Tue, 10 Apr 2018 13:21:44 +0000 (15:21 +0200)]
ARM: amba: Fix race condition with driver_override
The driver_override implementation is susceptible to a race condition
when different threads are reading vs storing a different driver
override. Add locking to avoid this race condition.
Cfr. commits
6265539776a0810b ("driver core: platform: fix race
condition with driver_override") and
9561475db680f714 ("PCI: Fix race
condition with driver_override").
Fixes: 3cf385713460eb2b ("ARM: 8256/1: driver coamba: add device binding path 'driver_override'")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Todd Kjos <tkjos@google.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Geert Uytterhoeven [Tue, 10 Apr 2018 13:21:43 +0000 (15:21 +0200)]
ARM: amba: Make driver_override output consistent with other buses
For AMBA devices with unconfigured driver override, the
"driver_override" sysfs virtual file is empty, while it contains
"(null)" for platform and PCI devices.
Make AMBA consistent with other buses by dropping the test for a NULL
pointer.
Note that contrary to popular belief, sprintf() handles NULL pointers
fine; they are printed as "(null)".
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Thu, 26 Apr 2018 08:29:57 +0000 (10:29 +0200)]
Revert "ARM: amba: Fix race condition with driver_override"
This reverts commit
6b614a87f3f477571e319281e84dba11e0ea0a76.
My backport was incorrect, as Geert pointed out :(
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Todd Kjos <tkjos@google.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dou Liyang [Wed, 25 Apr 2018 02:05:53 +0000 (10:05 +0800)]
x86/vector: Remove the macro VECTOR_OFFSET_START
Now, Linux uses matrix allocator for vector assignment, the original
assignment code which used VECTOR_OFFSET_START has been removed.
So remove the stale macro as well.
Fixes: commit 69cde0004a4b ("x86/vector: Use matrix allocator for vector assignment")
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Rientjes <rientjes@google.com>
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/20180425020553.17210-1-douly.fnst@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Fenghua Yu [Mon, 23 Apr 2018 18:29:22 +0000 (11:29 -0700)]
x86/cpufeatures: Enumerate cldemote instruction
cldemote is a new instruction in future x86 processors. It hints
to hardware that a specified cache line should be moved ("demoted")
from the cache(s) closest to the processor core to a level more
distant from the processor core. This instruction is faster than
snooping to make the cache line available for other cores.
cldemote instruction is indicated by the presence of the CPUID
feature flag CLDEMOTE (CPUID.(EAX=0x7, ECX=0):ECX[bit25]).
More details on cldemote instruction can be found in the latest
Intel Architecture Instruction Set Extensions and Future Features
Programming Reference.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "Ravi V Shankar" <ravi.v.shankar@intel.com>
Cc: "H. Peter Anvin" <hpa@linux.intel.com>
Cc: "Ashok Raj" <ashok.raj@intel.com>
Link: https://lkml.kernel.org/r/1524508162-192587-1-git-send-email-fenghua.yu@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Thu, 26 Apr 2018 05:28:29 +0000 (07:28 +0200)]
Merge tag 'perf-urgent-for-mingo-4.17-
20180425' of git://git./linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
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)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Theodore Ts'o [Thu, 26 Apr 2018 04:44:46 +0000 (00:44 -0400)]
ext4: add MODULE_SOFTDEP to ensure crc32c is included in the initramfs
Fixes: a45403b51582 ("ext4: always initialize the crc32c checksum driver")
Reported-by: François Valenduc <francoisvalenduc@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Linus Torvalds [Thu, 26 Apr 2018 04:23:38 +0000 (21:23 -0700)]
Merge tag 'for_v4.17-rc3' of git://git./linux/kernel/git/jack/linux-fs
Pull fsnotify fix from Jan Kara:
"A fix of a fsnotify race causing panics / softlockups"
* tag 'for_v4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: Fix fsnotify_mark_connector race
Linus Torvalds [Thu, 26 Apr 2018 04:13:40 +0000 (21:13 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Eight bug fixes, one spelling update and one tracepoint addition.
The most serious is probably the mptsas write same fix because it
means anyone using these controllers sees errors when modern
filesystems try to issue discards"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target: fix crash with iscsi target and dvd
scsi: sd_zbc: Avoid that resetting a zone fails sporadically
scsi: sd: Defer spinning up drive while SANITIZE is in progress
scsi: megaraid_sas: Do not log an error if FW successfully initializes.
scsi: ufs: add trace event for ufs upiu
scsi: core: remove reference to scsi_show_extd_sense()
scsi: mptsas: Disable WRITE SAME
scsi: fnic: fix spelling mistake in fnic stats "Abord" -> "Abort"
scsi: scsi_debug: IMMED related delay adjustments
scsi: iscsi: respond to netlink with unicast when appropriate
Linus Torvalds [Thu, 26 Apr 2018 04:05:15 +0000 (21:05 -0700)]
Merge tag 'for-linus-
20180425' of git://git.kernel.dk/linux-block
Pull block updates from Jens Axboe:
"I ended up sitting on this about a week longer than I wanted to, since
we were hashing out details with a timeout change. I've now killed
that patch, so we can flush the existing queue in due time.
This contains:
- Fix for an old regression, where entering the queue can be
disturbed by a signal to the process. This can cause spurious EIO.
Fix from Alan Jenkins.
- cdrom information leak fix from Dan.
- Trivial helper for testing queue FUA from Dave Chinner, part of his
O_DIRECT FUA series.
- Series of swim fixes from Finn that actually makes it work again.
- Loop O_DIRECT corruption fix, which caused data corruption in
production for us. From me.
- BFQ crash fix from me.
- bcache maintainer update. Michael no longer has the time to do it,
Coly has stepped up to serve as the new maintainer.
- blkcg locking fixes from Jiang Biao.
- Revert of a change from this merge window from Ming, that causes an
issue on some hardware.
- Minor clarification doc addition from Linus Walleij"
* tag 'for-linus-
20180425' of git://git.kernel.dk/linux-block: (22 commits)
Revert "blk-mq: remove code for dealing with remapping queue"
block: mq: Add some minor doc for core structs
bcache: mark Coly Li as bcache maintainer
MAINTAINERS: Remove me as maintainer of bcache
blkcg: init root blkcg_gq under lock
blkcg: small fix on comment in blkcg_init_queue
blkcg: don't hold blkcg lock when deactivating policy
block: add blk_queue_fua() helper function
cdrom: information leak in cdrom_ioctl_media_changed()
bfq-iosched: ensure to clear bic/bfqq pointers when preparing request
blk-mq: start request gstate with gen 1
block/swim: Select appropriate drive on device open
block/swim: Fix IO error at end of medium
block/swim: Check drive type
block/swim: Rename macros to avoid inconsistent inverted logic
block/swim: Don't log an error message for an invalid ioctl
block/swim: Remove extra put_disk() call from error path
block/swim: Fix array bounds check
m68k/mac: Don't remap SWIM MMIO region
loop: handle short DIO reads
...
Linus Torvalds [Thu, 26 Apr 2018 03:27:23 +0000 (20:27 -0700)]
Merge tag 'riscv-for-linus-4.17-rc3' of git://git./linux/kernel/git/palmer/riscv-linux
Pull RISC-V fixes from Palmer Dabbelt:
"This contains three small fixes related to the RISC-V port that I'd
like to target for 4.17-rc3:
- a Kconfig cleanup to select DMA_DIRECT_OPS instead of redefining it
in arch/riscv
- the removal of asm/handle_irq.h, which doesn't exist, from our arch
header list
- the addition of "-no-pie" the link rules for our VDSO-related
files, which fixes the build on systems where PIE is enabled by
default"
* tag 'riscv-for-linus-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
RISC-V: build vdso-dummy.o with -no-pie
riscv: there is no <asm/handle_irq.h>
riscv: select DMA_DIRECT_OPS instead of redefining it
projects / openwrt / staging / blogic.git / log