Arnd Bergmann [Mon, 27 Nov 2017 13:19:54 +0000 (08:19 -0500)]
media: uvcvideo: Use ktime_t for timestamps
uvc_video_get_ts() returns a 'struct timespec', but all its users
really want a nanoseconds variable anyway.
Changing the deprecated ktime_get_ts/ktime_get_real_ts to ktime_get
and ktime_get_real simplifies the code noticeably, while keeping
the resulting numbers unchanged.
Arnd Bergmann [Mon, 27 Nov 2017 13:19:53 +0000 (08:19 -0500)]
media: uvcvideo: Use ktime_t for stats
'struct timespec' works fine here, but we try to migrate
away from it in favor of ktime_t or timespec64. In this
case, using ktime_t produces the simplest code.
media: vb2: add a new warning about pending buffers
There's a logic at the VB2 core that produces a WARN_ON if
there are still buffers waiting to be filled. However, it doesn't
indicate what buffers are still opened, with makes harder to
identify issues inside caller drivers.
So, add a new pr_warn() pointing to such buffers. That, together
with debug instrumentation inside the drivers can make easier to
identify where the problem is.
media: vb2: Fix a bug about unnecessary calls to queue cancel and free
Currently, there's a logic with checks if *count is non-zero,
q->num_buffers is zero and q->memory is different than memory.
That's flawed when the device is initialized, or after the
queues are freed, as it does, unnecessary calls to
__vb2_queue_cancel() and __vb2_queue_free().
That can be avoided by making sure that q->memory is set to
VB2_MEMORY_UNKNOWN at vb2_core_queue_init(), and adding such
check at the loop.
[mchehab@s-opensource.com: fix checkpatch issues and improve the
patch, by setting q->memory to zero at vb2_core_queue_init]
Sakari Ailus [Thu, 28 Dec 2017 14:18:20 +0000 (09:18 -0500)]
media: vb2: Enforce VB2_MAX_FRAME in vb2_core_reqbufs better
The check for the number of buffers requested against the maximum,
VB2_MAX_FRAME, was performed before checking queue's minimum number of
buffers. Reverse the order, thus ensuring that under no circumstances
num_buffers exceeds VB2_MAX_FRAME here.
Also add a warning of the condition.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Julia Lawall [Wed, 27 Dec 2017 14:51:42 +0000 (09:51 -0500)]
media: pvrusb2: drop unneeded newline
pvr2_trace prints a newline at the end of the message string, so the
message string does not need to include a newline explicitly. Done
using Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Daniel Scheller [Tue, 26 Dec 2017 23:37:59 +0000 (18:37 -0500)]
media: dvb-frontends/stv0910: cleanup init_search_param() and enable PLS
Cleanup the mess in init_search_param() by utilising the new register
access macros and functions. And while at it, move the ISI and PLS setup
into separate functions, and pass the new scrambling_sequence_index (aka.
physical layer scrambling) value to set_pls.
Picked up from the dddvb upstream, adapted to the different naming of the
pls property (pls vs. scrambling_sequence_index).
Cc: Ralph Metzler <rjkm@metzlerbros.de> Signed-off-by: Daniel Scheller <d.scheller@gmx.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Daniel Scheller [Tue, 26 Dec 2017 23:37:58 +0000 (18:37 -0500)]
media: dvb-frontends/stv0910: field and register access helpers
Add a write_field() function that acts as helper to update specific bits
specified in the field defines (FSTV0910_*) in stv0910_regs.h, which was
recently updated to carry the missing offset values. With that, add the
SET_FIELD(), SET_REG() and GET_REG() macros that wrap the write_field(),
write_reg() and read_reg() functions to allow for making all demod
access code cleaner.
The write_field() function is annotated with __maybe_unused temporarily
to silence eventual compile warnings.
Picked up from the dddvb upstream, with the macro names made uppercase
so they are distinguishable as such.
Cc: Ralph Metzler <rjkm@metzlerbros.de> Signed-off-by: Daniel Scheller <d.scheller@gmx.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
write_reg() and i2c_write_reg16() only act as a proxy to i2c_write(), which
isn't called from anywhere else throughout the driver. Clean this up by
moving the message setup and the i2c_transfer() into write_reg() so it
becomes the only I2C write function. While touching those parts, fix the
error codes from EREMOTEIO to EIO.
The I2C cleanup is picked from the upstream dddvb.
Cc: Ralph Metzler <rjkm@metzlerbros.de> Signed-off-by: Daniel Scheller <d.scheller@gmx.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Daniel Scheller [Tue, 26 Dec 2017 23:37:56 +0000 (18:37 -0500)]
media: dvb-frontends/stv0910: deduplicate writes in enable_puncture_rate()
For all code rates, the same write is performed, only with a differing
value. Clean this up by putting that value into a variable instead and
perform the write at the end with that value.
Picked up from the dddvb upstream.
Cc: Ralph Metzler <rjkm@metzlerbros.de> Signed-off-by: Daniel Scheller <d.scheller@gmx.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* tag 'v4.15-rc6': (734 commits)
Linux 4.15-rc6
MAINTAINERS: mark arch/blackfin/ and its gubbins as orphaned
x86/ldt: Make LDT pgtable free conditional
x86/ldt: Plug memory leak in error path
x86/mm: Remove preempt_disable/enable() from __native_flush_tlb()
x86/smpboot: Remove stale TLB flush invocations
objtool: Fix seg fault with clang-compiled objects
objtool: Fix seg fault caused by missing parameter
kbuild: add '-fno-stack-check' to kernel build options
timerqueue: Document return values of timerqueue_add/del()
timers: Invoke timer_start_debug() where it makes sense
nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
timers: Reinitialize per cpu bases on hotplug
timers: Use deferrable base independent of base::nohz_active
genirq/msi, x86/vector: Prevent reservation mode for non maskable MSI
genirq/irqdomain: Rename early argument of irq_domain_activate_irq()
x86/vector: Use IRQD_CAN_RESERVE flag
genirq: Introduce IRQD_CAN_RESERVE flag
genirq/msi: Handle reactivation only on success
gpio: brcmstb: Make really use of the new lockdep class
...
Linus Torvalds [Sun, 31 Dec 2017 21:13:56 +0000 (13:13 -0800)]
Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A couple of fixlets for x86:
- Fix the ESPFIX double fault handling for 5-level pagetables
- Fix the commandline parsing for 'apic=' on 32bit systems and update
documentation
- Make zombie stack traces reliable
- Fix kexec with stack canary
- Fix the delivery mode for APICs which was missed when the x86
vector management was converted to single target delivery. Caused a
regression due to the broken hardware which ignores affinity
settings in lowest prio delivery mode.
- Unbreak modules when AMD memory encryption is enabled
- Remove an unused parameter of prepare_switch_to"
* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Switch all APICs to Fixed delivery mode
x86/apic: Update the 'apic=' description of setting APIC driver
x86/apic: Avoid wrong warning when parsing 'apic=' in X86-32 case
x86-32: Fix kexec with stack canary (CONFIG_CC_STACKPROTECTOR)
x86: Remove unused parameter of prepare_switch_to
x86/stacktrace: Make zombie stack traces reliable
x86/mm: Unbreak modules that use the DMA API
x86/build: Make isoimage work on Debian
x86/espfix/64: Fix espfix double-fault handling on 5-level systems
Linus Torvalds [Sun, 31 Dec 2017 20:30:34 +0000 (12:30 -0800)]
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"A pile of fixes for long standing issues with the timer wheel and the
NOHZ code:
- Prevent timer base confusion accross the nohz switch, which can
cause unlocked access and data corruption
- Reinitialize the stale base clock on cpu hotplug to prevent subtle
side effects including rollovers on 32bit
- Prevent an interrupt storm when the timer softirq is already
pending caused by tick_nohz_stop_sched_tick()
- Move the timer start tracepoint to a place where it actually makes
sense
- Add documentation to timerqueue functions as they caused confusion
several times now"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timerqueue: Document return values of timerqueue_add/del()
timers: Invoke timer_start_debug() where it makes sense
nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
timers: Reinitialize per cpu bases on hotplug
timers: Use deferrable base independent of base::nohz_active
Linus Torvalds [Sun, 31 Dec 2017 20:27:19 +0000 (12:27 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"Three patches addressing the fallout of the CPU_ISOLATION changes
especially with NO_HZ_FULL plus documentation of boot parameter
dependency"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/isolation: Document boot parameters dependency on CONFIG_CPU_ISOLATION=y
sched/isolation: Enable CONFIG_CPU_ISOLATION=y by default
sched/isolation: Make CONFIG_NO_HZ_FULL select CONFIG_CPU_ISOLATION
Linus Torvalds [Sun, 31 Dec 2017 19:47:24 +0000 (11:47 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
- plug a memory leak in the intel pmu init code
- clang fixes
- tooling fix to avoid including kernel headers
- a fix for jvmti to generate correct debug information for inlined
code
- replace backtick with a regular shell function
- fix the build in hardened environments
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel: Plug memory leak in intel_pmu_init()
x86/asm: Allow again using asm.h when building for the 'bpf' clang target
tools arch s390: Do not include header files from the kernel sources
perf jvmti: Generate correct debug information for inlined code
perf tools: Fix up build in hardened environments
perf tools: Use shell function for perl cflags retrieval
Linus Torvalds [Sun, 31 Dec 2017 19:23:11 +0000 (11:23 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"A rather large update after the kaisered maintainer finally found time
to handle regression reports.
- The larger part addresses a regression caused by the x86 vector
management rework.
The reservation based model does not work reliably for MSI
interrupts, if they cannot be masked (yes, yet another hw
engineering trainwreck). The reason is that the reservation mode
assigns a dummy vector when the interrupt is allocated and switches
to a real vector when the interrupt is requested.
If the MSI entry cannot be masked then the initialization might
raise an interrupt before the interrupt is requested, which ends up
as spurious interrupt and causes device malfunction and worse. The
fix is to exclude MSI interrupts which do not support masking from
reservation mode and assign a real vector right away.
- Extend the extra lockdep class setup for nested interrupts with a
class for the recently added irq_desc::request_mutex so lockdep can
differeniate and does not emit false positive warnings.
- A ratelimit guard for the bad irq printout so in case a bad irq
comes back immediately the system does not drown in dmesg spam"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/msi, x86/vector: Prevent reservation mode for non maskable MSI
genirq/irqdomain: Rename early argument of irq_domain_activate_irq()
x86/vector: Use IRQD_CAN_RESERVE flag
genirq: Introduce IRQD_CAN_RESERVE flag
genirq/msi: Handle reactivation only on success
gpio: brcmstb: Make really use of the new lockdep class
genirq: Guard handle_bad_irq log messages
kernel/irq: Extend lockdep class for request mutex
Linus Torvalds [Sun, 31 Dec 2017 18:57:10 +0000 (10:57 -0800)]
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Thomas Gleixner:
"Three fixlets for objtool:
- Address two segfaults related to missing parameter and clang
objects
- Make it compile clean with clang"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Fix seg fault with clang-compiled objects
objtool: Fix seg fault caused by missing parameter
objtool: Fix Clang enum conversion warning
Linus Torvalds [Sun, 31 Dec 2017 18:52:51 +0000 (10:52 -0800)]
Merge tag 'char-misc-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fixes from Greg KH:
"Here are six small fixes of some of the char/misc drivers that have
been sent in to resolve reported issues.
Nothing major, a binder use-after-free fix, some thunderbolt bugfixes,
a hyper-v bugfix, and an nvmem driver fix. All of these have been in
linux-next with no reported issues for a while"
* tag 'char-misc-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
nvmem: meson-mx-efuse: fix reading from an offset other than 0
binder: fix proc->files use-after-free
vmbus: unregister device_obj->channels_kset
thunderbolt: Mask ring interrupt properly when polling starts
MAINTAINERS: Add thunderbolt.rst to the Thunderbolt driver entry
thunderbolt: Make pathname to force_power shorter
Linus Torvalds [Sun, 31 Dec 2017 18:50:05 +0000 (10:50 -0800)]
Merge tag 'driver-core-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are two driver core fixes for 4.15-rc6, resolving some reported
issues.
The first is a cacheinfo fix for DT based systems to resolve a
reported issue that has been around for a while, and the other is to
resolve a regression in the kobject uevent code that showed up in
4.15-rc1.
Both have been in linux-next for a while with no reported issues"
* tag 'driver-core-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
kobject: fix suppressing modalias in uevents delivered over netlink
drivers: base: cacheinfo: fix cache type for non-architected system cache
Linus Torvalds [Sun, 31 Dec 2017 18:44:00 +0000 (10:44 -0800)]
Merge tag 'usb-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY fixes from Greg KH:
"Here are a number of small USB and PHY driver fixes for 4.15-rc6.
Nothing major, but there are a number of regression fixes in here that
resolve issues that have been reported a bunch. There are also the
usual xhci fixes as well as a number of new usb serial device ids.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201
xhci: Fix use-after-free in xhci debugfs
xhci: Fix xhci debugfs NULL pointer dereference in resume from hibernate
USB: serial: ftdi_sio: add id for Airbus DS P8GR
usb: Add device quirk for Logitech HD Pro Webcam C925e
usb: add RESET_RESUME for ELSA MicroLink 56K
usbip: fix usbip bind writing random string after command in match_busid
usbip: stub_rx: fix static checker warning on unnecessary checks
usbip: prevent leaking socket pointer address in messages
usbip: stub: stop printing kernel pointer addresses in messages
usbip: vhci: stop printing kernel pointer addresses in messages
USB: Fix off by one in type-specific length check of BOS SSP capability
USB: serial: option: adding support for YUGA CLM920-NC5
phy: rcar-gen3-usb2: select USB_COMMON
phy: rockchip-typec: add pm_runtime_disable in err case
phy: cpcap-usb: Fix platform_get_irq_byname's error checking.
phy: tegra: fix device-tree node lookups
USB: serial: qcserial: add Sierra Wireless EM7565
USB: serial: option: add support for Telit ME910 PID 0x1101
USB: chipidea: msm: fix ulpi-node lookup
Adam Borowski [Mon, 25 Dec 2017 15:38:58 +0000 (16:38 +0100)]
MAINTAINERS: mark arch/blackfin/ and its gubbins as orphaned
The blackfin architecture has seen no maintainer action of any kind since
April 2015. No new code, no pull requests, no acks to patches, no response
to mails, nothing.
The web site has an expired certificate (expiration Sep 2017, issued in
2013), the mailing list sees no answers either, with one exception:
https://sourceforge.net/p/adi-buildroot/mailman/adi-buildroot-devel/
>
> Steven is no longer working on this for ADI. Acked by me if this works. Thanks.
>
> Best regards,
> Aaron Wu
> Analog Devices Inc.
But, Aaron doesn't seem to respond to queries either.
Thomas Gleixner [Sun, 31 Dec 2017 15:52:15 +0000 (16:52 +0100)]
x86/ldt: Make LDT pgtable free conditional
Andy prefers to be paranoid about the pagetable free in the error path of
write_ldt(). Make it conditional and warn whenever the installment of a
secondary LDT fails.
Requested-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Sun, 31 Dec 2017 10:24:34 +0000 (11:24 +0100)]
x86/ldt: Plug memory leak in error path
The error path in write_ldt() tries to free 'old_ldt' instead of the newly
allocated 'new_ldt', resulting in a memory leak. It also misses to clean up a
half populated LDT pagetable, which is not a leak as it gets cleaned up
when the process exits.
Free both the potentially half populated LDT pagetable and the newly
allocated LDT struct. This can be done unconditionally because once an LDT
is mapped subsequent maps will succeed, because the PTE page is already
populated and the two LDTs fit into that single page.
Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Linus Torvalds <torvalds@linuxfoundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: f55f0501cbf6 ("x86/pti: Put the LDT in its own PGD if PTI is on") Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1712311121340.1899@nanos Signed-off-by: Ingo Molnar <mingo@kernel.org>
Thomas Gleixner [Sat, 30 Dec 2017 21:13:54 +0000 (22:13 +0100)]
x86/mm: Remove preempt_disable/enable() from __native_flush_tlb()
The preempt_disable/enable() pair in __native_flush_tlb() was added in
commit:
5cf0791da5c1 ("x86/mm: Disable preemption during CR3 read+write")
... to protect the UP variant of flush_tlb_mm_range().
That preempt_disable/enable() pair should have been added to the UP variant
of flush_tlb_mm_range() instead.
The UP variant was removed with commit:
ce4a4e565f52 ("x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code")
... but the preempt_disable/enable() pair stayed around.
The latest change to __native_flush_tlb() in commit:
6fd166aae78c ("x86/mm: Use/Fix PCID to optimize user/kernel switches")
... added an access to a per CPU variable outside the preempt disabled
regions, which makes no sense at all. __native_flush_tlb() must always
be called with at least preemption disabled.
Remove the preempt_disable/enable() pair and add a WARN_ON_ONCE() to catch
bad callers independent of the smp_processor_id() debugging.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <stable@vger.kernel.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Linus Torvalds <torvalds@linuxfoundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20171230211829.679325424@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Thomas Gleixner [Sat, 30 Dec 2017 21:13:53 +0000 (22:13 +0100)]
x86/smpboot: Remove stale TLB flush invocations
smpboot_setup_warm_reset_vector() and smpboot_restore_warm_reset_vector()
invoke local_flush_tlb() for no obvious reason.
Digging in history revealed that the original code in the 2.1 era added
those because the code manipulated a swapper_pg_dir pagetable entry. The
pagetable manipulation was removed long ago in the 2.3 timeframe, but the
TLB flush invocations stayed around forever.
Remove them along with the pointless pr_debug()s which come from the same 2.1
change.
Reported-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <stable@vger.kernel.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Linus Torvalds <torvalds@linuxfoundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20171230211829.586548655@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Linus Torvalds [Sat, 30 Dec 2017 22:31:30 +0000 (14:31 -0800)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two simple fixes, both of which cause I/O hangs.
The storvsc one is from the hyper-v which can hang under certain hot
add/remove conditions and the other is generally, where removing a
target and a device in close proximity can result in the release
method being executed twice (and subsequent list and other corruption
and an eventual panic)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: storvsc: Fix scsi_cmd error assignments in storvsc_handle_error
scsi: core: check for device state in __scsi_remove_target()
Simon Ser [Sat, 30 Dec 2017 20:43:32 +0000 (14:43 -0600)]
objtool: Fix seg fault with clang-compiled objects
Fix a seg fault which happens when an input file provided to 'objtool
orc generate' doesn't have a '.shstrtab' section (for instance, object
files produced by clang don't have this section).
Linus Torvalds [Sat, 30 Dec 2017 18:16:51 +0000 (10:16 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
- two cosmetic fixes from Daniel Axtens and Hans de Goede
- fix for I2C command mismatch fix for cp2112 driver from Eudean Sun
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: core: lower log level for unknown main item tags to warnings
HID: holtekff: move MODULE_* parameters out of #ifdef block
HID: cp2112: Fix I2C_BLOCK_DATA transactions
Linus Torvalds [Sat, 30 Dec 2017 01:34:43 +0000 (17:34 -0800)]
kbuild: add '-fno-stack-check' to kernel build options
It appears that hardened gentoo enables "-fstack-check" by default for
gcc.
That doesn't work _at_all_ for the kernel, because the kernel stack
doesn't act like a user stack at all: it's much smaller, and it doesn't
auto-expand on use. So the extra "probe one page below the stack" code
generated by -fstack-check just breaks the kernel in horrible ways,
causing infinite double faults etc.
[ I have to say, that the particular code gcc generates looks very
stupid even for user space where it works, but that's a separate
issue. ]
Reported-and-tested-by: Alexander Tsoy <alexander@tsoy.me> Reported-and-tested-by: Toralf Förster <toralf.foerster@gmx.de> Cc: stable@kernel.org Cc: Dave Hansen <dave.hansen@intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 30 Dec 2017 01:02:49 +0000 (17:02 -0800)]
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 page table isolation updates from Thomas Gleixner:
"This is the final set of enabling page table isolation on x86:
- Infrastructure patches for handling the extra page tables.
- Patches which map the various bits and pieces which are required to
get in and out of user space into the user space visible page
tables.
- The required changes to have CR3 switching in the entry/exit code.
- Optimizations for the CR3 switching along with documentation how
the ASID/PCID mechanism works.
- Updates to dump pagetables to cover the user space page tables for
W+X scans and extra debugfs files to analyze both the kernel and
the user space visible page tables
The whole functionality is compile time controlled via a config switch
and can be turned on/off on the command line as well"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
x86/ldt: Make the LDT mapping RO
x86/mm/dump_pagetables: Allow dumping current pagetables
x86/mm/dump_pagetables: Check user space page table for WX pages
x86/mm/dump_pagetables: Add page table directory to the debugfs VFS hierarchy
x86/mm/pti: Add Kconfig
x86/dumpstack: Indicate in Oops whether PTI is configured and enabled
x86/mm: Clarify the whole ASID/kernel PCID/user PCID naming
x86/mm: Use INVPCID for __native_flush_tlb_single()
x86/mm: Optimize RESTORE_CR3
x86/mm: Use/Fix PCID to optimize user/kernel switches
x86/mm: Abstract switching CR3
x86/mm: Allow flushing for future ASID switches
x86/pti: Map the vsyscall page if needed
x86/pti: Put the LDT in its own PGD if PTI is on
x86/mm/64: Make a full PGD-entry size hole in the memory map
x86/events/intel/ds: Map debug buffers in cpu_entry_area
x86/cpu_entry_area: Add debugstore entries to cpu_entry_area
x86/mm/pti: Map ESPFIX into user space
x86/mm/pti: Share entry text PMD
x86/entry: Align entry text section to PMD boundary
...
Thomas Gleixner [Fri, 22 Dec 2017 14:51:13 +0000 (15:51 +0100)]
nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
The conditions in irq_exit() to invoke tick_nohz_irq_exit() which
subsequently invokes tick_nohz_stop_sched_tick() are:
if ((idle_cpu(cpu) && !need_resched()) || tick_nohz_full_cpu(cpu))
If need_resched() is not set, but a timer softirq is pending then this is
an indication that the softirq code punted and delegated the execution to
softirqd. need_resched() is not true because the current interrupted task
takes precedence over softirqd.
Invoking tick_nohz_irq_exit() in this case can cause an endless loop of
timer interrupts because the timer wheel contains an expired timer, but
softirqs are not yet executed. So it returns an immediate expiry request,
which causes the timer to fire immediately again. Lather, rinse and
repeat....
Prevent that by adding a check for a pending timer soft interrupt to the
conditions in tick_nohz_stop_sched_tick() which avoid calling
get_next_timer_interrupt(). That keeps the tick sched timer on the tick and
prevents a repetitive programming of an already expired timer.
Reported-by: Sebastian Siewior <bigeasy@linutronix.d> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712272156050.2431@nanos
Thomas Gleixner [Wed, 27 Dec 2017 20:37:25 +0000 (21:37 +0100)]
timers: Reinitialize per cpu bases on hotplug
The timer wheel bases are not (re)initialized on CPU hotplug. That leaves
them with a potentially stale clk and next_expiry valuem, which can cause
trouble then the CPU is plugged.
Add a prepare callback which forwards the clock, sets next_expiry to far in
the future and reset the control flags to a known state.
Set base->must_forward_clk so the first timer which is queued will try to
forward the clock to current jiffies.
Fixes: 500462a9de65 ("timers: Switch to a non-cascading wheel") Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712272152200.2431@nanos
timers: Use deferrable base independent of base::nohz_active
During boot and before base::nohz_active is set in the timer bases, deferrable
timers are enqueued into the standard timer base. This works correctly as
long as base::nohz_active is false.
Once it base::nohz_active is set and a timer which was enqueued before that
is accessed the lock selector code choses the lock of the deferred
base. This causes unlocked access to the standard base and in case the
timer is removed it does not clear the pending flag in the standard base
bitmap which causes get_next_timer_interrupt() to return bogus values.
To prevent that, the deferrable timers must be enqueued in the deferrable
base, even when base::nohz_active is not set. Those deferrable timers also
need to be expired unconditional.
Fixes: 500462a9de65 ("timers: Switch to a non-cascading wheel") Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: stable@vger.kernel.org Cc: rt@linutronix.de Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Link: https://lkml.kernel.org/r/20171222145337.633328378@linutronix.de
Thomas Gleixner [Fri, 29 Dec 2017 09:47:22 +0000 (10:47 +0100)]
genirq/msi, x86/vector: Prevent reservation mode for non maskable MSI
The new reservation mode for interrupts assigns a dummy vector when the
interrupt is allocated and assigns a real vector when the interrupt is
requested. The reservation mode prevents vector pressure when devices with
a large amount of queues/interrupts are initialized, but only a minimal
subset of those queues/interrupts is actually used.
This mode has an issue with MSI interrupts which cannot be masked. If the
driver is not careful or the hardware emits an interrupt before the device
irq is requestd by the driver then the interrupt ends up on the dummy
vector as a spurious interrupt which can cause malfunction of the device or
in the worst case a lockup of the machine.
Change the logic for the reservation mode so that the early activation of
MSI interrupts checks whether:
- the device is a PCI/MSI device
- the reservation mode of the underlying irqdomain is activated
- PCI/MSI masking is globally enabled
- the PCI/MSI device uses either MSI-X, which supports masking, or
MSI with the maskbit supported.
If one of those conditions is false, then clear the reservation mode flag
in the irq data of the interrupt and invoke irq_domain_activate_irq() with
the reserve argument cleared. In the x86 vector code, clear the can_reserve
flag in the vector allocation data so a subsequent free_irq() won't create
the same situation again. The interrupt stays assigned to a real vector
until pci_disable_msi() is invoked and all allocations are undone.
Fixes: 4900be83602b ("x86/vector/msi: Switch to global reservation mode") Reported-by: Alexandru Chirvasitu <achirvasub@gmail.com> Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Alexandru Chirvasitu <achirvasub@gmail.com> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Dou Liyang <douly.fnst@cn.fujitsu.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Mikael Pettersson <mikpelinux@gmail.com> Cc: Josh Poulson <jopoulso@microsoft.com> Cc: Mihai Costache <v-micos@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-pci@vger.kernel.org Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Dexuan Cui <decui@microsoft.com> Cc: Simon Xiao <sixiao@microsoft.com> Cc: Saeed Mahameed <saeedm@mellanox.com> Cc: Jork Loeser <Jork.Loeser@microsoft.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: devel@linuxdriverproject.org Cc: KY Srinivasan <kys@microsoft.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Sakari Ailus <sakari.ailus@intel.com>, Cc: linux-media@vger.kernel.org Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712291406420.1899@nanos Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712291409460.1899@nanos
Thomas Gleixner [Fri, 29 Dec 2017 15:57:00 +0000 (16:57 +0100)]
x86/vector: Use IRQD_CAN_RESERVE flag
Set the new CAN_RESERVE flag when the initial reservation for an interrupt
happens. The flag is used in a subsequent patch to disable reservation mode
for a certain class of MSI devices.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Alexandru Chirvasitu <achirvasub@gmail.com> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Dou Liyang <douly.fnst@cn.fujitsu.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Mikael Pettersson <mikpelinux@gmail.com> Cc: Josh Poulson <jopoulso@microsoft.com> Cc: Mihai Costache <v-micos@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-pci@vger.kernel.org Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Dexuan Cui <decui@microsoft.com> Cc: Simon Xiao <sixiao@microsoft.com> Cc: Saeed Mahameed <saeedm@mellanox.com> Cc: Jork Loeser <Jork.Loeser@microsoft.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: devel@linuxdriverproject.org Cc: KY Srinivasan <kys@microsoft.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Sakari Ailus <sakari.ailus@intel.com>, Cc: linux-media@vger.kernel.org
Thomas Gleixner [Fri, 29 Dec 2017 15:44:34 +0000 (16:44 +0100)]
genirq: Introduce IRQD_CAN_RESERVE flag
Add a new flag to mark interrupts which can use reservation mode. This is
going to be used in subsequent patches to disable reservation mode for a
certain class of MSI devices.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Alexandru Chirvasitu <achirvasub@gmail.com> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Dou Liyang <douly.fnst@cn.fujitsu.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Mikael Pettersson <mikpelinux@gmail.com> Cc: Josh Poulson <jopoulso@microsoft.com> Cc: Mihai Costache <v-micos@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-pci@vger.kernel.org Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Dexuan Cui <decui@microsoft.com> Cc: Simon Xiao <sixiao@microsoft.com> Cc: Saeed Mahameed <saeedm@mellanox.com> Cc: Jork Loeser <Jork.Loeser@microsoft.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: devel@linuxdriverproject.org Cc: KY Srinivasan <kys@microsoft.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Sakari Ailus <sakari.ailus@intel.com>, Cc: linux-media@vger.kernel.org
Thomas Gleixner [Fri, 29 Dec 2017 09:42:10 +0000 (10:42 +0100)]
genirq/msi: Handle reactivation only on success
When analyzing the fallout of the x86 vector allocation rework it turned
out that the error handling in msi_domain_alloc_irqs() is broken.
If MSI_FLAG_MUST_REACTIVATE is set for a MSI domain then it clears the
activation flag for a successfully initialized msi descriptor. If a
subsequent initialization fails then the error handling code path does not
deactivate the interrupt because the activation flag got cleared.
Move the clearing of the activation flag outside of the initialization loop
so that an eventual failure can be cleaned up correctly.
Fixes: 22d0b12f3560 ("genirq/irqdomain: Add force reactivation flag to irq domains") Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Alexandru Chirvasitu <achirvasub@gmail.com> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Dou Liyang <douly.fnst@cn.fujitsu.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Mikael Pettersson <mikpelinux@gmail.com> Cc: Josh Poulson <jopoulso@microsoft.com> Cc: Mihai Costache <v-micos@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-pci@vger.kernel.org Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Dexuan Cui <decui@microsoft.com> Cc: Simon Xiao <sixiao@microsoft.com> Cc: Saeed Mahameed <saeedm@mellanox.com> Cc: Jork Loeser <Jork.Loeser@microsoft.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: devel@linuxdriverproject.org Cc: KY Srinivasan <kys@microsoft.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Sakari Ailus <sakari.ailus@intel.com>, Cc: linux-media@vger.kernel.org
drivers/staging/media/imx/imx-media-dev.c: In function 'find_async_subdev':
>> drivers/staging/media/imx/imx-media-dev.c:55:49: error: request for member 'name' in something not a structure or union
if (devname && !strcmp(asd->match.device_name.name,
^
drivers/staging/media/imx/imx-media-dev.c: In function 'imx_media_add_async_subdev':
drivers/staging/media/imx/imx-media-dev.c:110:25: error: request for member 'name' in something not a structure or union
asd->match.device_name.name = devname;
^
Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Linus Torvalds [Fri, 29 Dec 2017 19:54:15 +0000 (11:54 -0800)]
Merge tag 'pm-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"This fixes a schedutil cpufreq governor regression from the 4.14 cycle
that may cause a CPU idleness check to return incorrect results in
some cases which leads to suboptimal decisions (Joel Fernandes)"
* tag 'pm-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: schedutil: Use idle_calls counter of the remote CPU
Thomas Gleixner [Fri, 29 Dec 2017 15:29:15 +0000 (16:29 +0100)]
gpio: brcmstb: Make really use of the new lockdep class
The recent extension of irq_set_lockdep_class() with a second argument
added the new lockdep class to the mrcmstb driver, but used the already
existing lockdep class as second argument, which leaves the new lockdep
class defined but unused.
Use the new lockdep class as that's what the change intended to do.
Fixes: 39c3fd58952d ("kernel/irq: Extend lockdep class for request mutex") Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Lunn <andrew@lunn.ch> Cc: linus.walleij@linaro.org
/devel/v4l/patchwork/Documentation/output/dmx.h.rst:6: WARNING: undefined label: dmx_dqbuf (if the link has no caption the label must precede a section header)
Thomas Gleixner [Thu, 28 Dec 2017 10:33:33 +0000 (11:33 +0100)]
x86/apic: Switch all APICs to Fixed delivery mode
Some of the APIC incarnations are operating in lowest priority delivery
mode. This worked as long as the vector management code allocated the same
vector on all possible CPUs for each interrupt.
Lowest priority delivery mode does not necessarily respect the affinity
setting and may redirect to some other online CPU. This was documented
somewhere in the old code and the conversion to single target delivery
missed to update the delivery mode of the affected APIC drivers which
results in spurious interrupts on some of the affected CPU/Chipset
combinations.
Switch the APIC drivers over to Fixed delivery mode and remove all
leftovers of lowest priority delivery mode.
Switching to Fixed delivery mode is not a problem on these CPUs because the
kernel already uses Fixed delivery mode for IPIs. The reason for this is
that th SDM explicitely forbids lowest prio mode for IPIs. The reason is
obvious: If the irq routing does not honor destination targets in lowest
prio mode then an IPI targeted at CPU1 might end up on CPU0, which would be
a fatal problem in many cases.
As a consequence of this change, the apic::irq_delivery_mode field is now
pointless, but this needs to be cleaned up in a separate patch.
Fixes: fdba46ffb4c2 ("x86/apic: Get rid of multi CPU affinity") Reported-by: vcaputo@pengaru.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: vcaputo@pengaru.com Cc: Pavel Machek <pavel@ucw.cz> Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712281140440.1688@nanos
The V4L2_ASYNC_MATCH_FWNODE match criteria requires just one
struct to be filled (struct fwnode_handle). The V4L2_ASYNC_MATCH_DEVNAME
match criteria requires just a device name.
So, it doesn't make sense to enclose those into structs,
as the criteria can go directly into the union.
That makes easier to document it, as we don't need to document
weird senseless structs.
At drivers, this makes even clearer about the match criteria.
Sakari Ailus [Fri, 8 Sep 2017 13:47:26 +0000 (09:47 -0400)]
media: i2c: as3645a: Remove driver
Remove the V4L2 AS3645A sub-device driver in favour of the LED flash class
driver for the same hardware, drivers/leds/leds-as3645a.c. The latter uses
the V4L2 flash LED class framework to provide V4L2 sub-device interface.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Sinan Kaya [Mon, 27 Nov 2017 16:57:59 +0000 (11:57 -0500)]
media: atomisp: deprecate pci_get_bus_and_slot()
pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.
Getting ready to remove pci_get_bus_and_slot() function. Since ISP always
uses domain 0, hard-code it in the code when calling the replacement
function pci_get_domain_bus_and_slot().
Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Arnd Bergmann [Mon, 27 Nov 2017 15:21:41 +0000 (10:21 -0500)]
media: staging: atomisp: convert timestamps to ktime_t
timespec overflows in 2038 on 32-bit architectures, and the
getnstimeofday() suffers from possible time jumps, so the
timestamps here are better done using ktime_get(), which has
neither of those problems.
In case of ov2680, we don't seem to use the timestamp at
all, so I just remove it.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
1) IPv6 gre tunnels end up with different default features enabled
depending upon whether netlink or ioctls are used to bring them up.
Fix from Alexey Kodanev.
2) Fix read past end of user control message in RDS< from Avinash
Repaka.
3) Missing RCU barrier in mini qdisc code, from Cong Wang.
4) Missing policy put when reusing per-cpu route entries, from Florian
Westphal.
5) Handle nested PCI errors properly in bnx2x driver, from Guilherme G.
Piccoli.
6) Run nested transport mode IPSEC packets via tasklet, from Herbert
Xu.
7) Fix handling poll() for stream sockets in tipc, from Parthasarathy
Bhuvaragan.
8) Fix two stack-out-of-bounds issues in IPSEC, from Steffen Klassert.
9) Another zerocopy ubuf handling fix, from Willem de Bruijn.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (33 commits)
strparser: Call sock_owned_by_user_nocheck
sock: Add sock_owned_by_user_nocheck
skbuff: in skb_copy_ubufs unclone before releasing zerocopy
tipc: fix hanging poll() for stream sockets
sctp: Replace use of sockets_allocated with specified macro.
bnx2x: Improve reliability in case of nested PCI errors
tg3: Enable PHY reset in MTU change path for 5720
tg3: Add workaround to restrict 5762 MRRS to 2048
tg3: Update copyright
net: fec: unmap the xmit buffer that are not transferred by DMA
tipc: fix tipc_mon_delete() oops in tipc_enable_bearer() error path
tipc: error path leak fixes in tipc_enable_bearer()
RDS: Check cmsg_len before dereferencing CMSG_DATA
tcp: Avoid preprocessor directives in tracepoint macro args
tipc: fix memory leak of group member when peer node is lost
net: sched: fix possible null pointer deref in tcf_block_put
tipc: base group replicast ack counter on number of actual receivers
net_sched: fix a missing rcu barrier in mini_qdisc_pair_swap()
net: phy: micrel: ksz9031: reconfigure autoneg after phy autoneg workaround
ip6_gre: fix device features for ioctl setup
...
Linus Torvalds [Fri, 29 Dec 2017 07:16:24 +0000 (23:16 -0800)]
Merge tag 'drm-fixes-for-v4.15-rc6' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"nouveau and i915 regression fixes"
* tag 'drm-fixes-for-v4.15-rc6' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau: fix race when adding delayed work items
i915: Reject CCS modifiers for pipe C on Geminilake
drm/i915/gvt: Fix pipe A enable as default for vgpu
Linus Torvalds [Fri, 29 Dec 2017 07:14:47 +0000 (23:14 -0800)]
Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fix from Stephen Boyd:
"One more fix for the runtime PM clk patches. We're calling a runtime
PM API that may schedule from somewhere that we can't do that. We
change to the async version of pm_runtime_put() to fix it"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: use atomic runtime pm api in clk_core_is_enabled
Linus Torvalds [Fri, 29 Dec 2017 07:09:45 +0000 (23:09 -0800)]
Merge tag 'led_fixes_for_4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED fix from Jacek Anaszewski:
"A single LED fix for brightness setting when delay_off is 0"
* tag 'led_fixes_for_4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
led: core: Fix brightness setting when setting delay_off=0
Linus Torvalds [Fri, 29 Dec 2017 07:06:01 +0000 (23:06 -0800)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"This is the next batch of for-rc patches from RDMA. It includes the
fix for the ipoib regression I mentioned last time, and the result of
a fairly major debugging effort to get iser working reliably on cxgb4
hardware - it turns out the cxgb4 driver was not handling QP error
flushing properly causing iser to fail.
- cxgb4 fix for an iser testing failure as debugged by Steve and
Sagi. The problem was a driver bug in the handling of shutting down
a QP.
- Various vmw_pvrdma fixes for bogus WARN_ON, missed resource free on
error unwind and a use after free bug
- Improper congestion counter values on mlx5 when link aggregation is
enabled
- ipoib lockdep regression introduced in this merge window
- hfi1 regression supporting the device in a VM introduced in a
recent patch
- Typo that breaks future uAPI compatibility in the verbs core
- More SELinux related oops fixing
- Fix an oops during error unwind in mlx5"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
IB/mlx5: Fix mlx5_ib_alloc_mr error flow
IB/core: Verify that QP is security enabled in create and destroy
IB/uverbs: Fix command checking as part of ib_uverbs_ex_modify_qp()
IB/mlx5: Serialize access to the VMA list
IB/hfi: Only read capability registers if the capability exists
IB/ipoib: Fix lockdep issue found on ipoib_ib_dev_heavy_flush
IB/mlx5: Fix congestion counters in LAG mode
RDMA/vmw_pvrdma: Avoid use after free due to QP/CQ/SRQ destroy
RDMA/vmw_pvrdma: Use refcount_dec_and_test to avoid warning
RDMA/vmw_pvrdma: Call ib_umem_release on destroy QP path
iw_cxgb4: when flushing, complete all wrs in a chain
iw_cxgb4: reflect the original WR opcode in drain cqes
iw_cxgb4: Only validate the MSN for successful completions
David S. Miller [Thu, 28 Dec 2017 19:28:23 +0000 (14:28 -0500)]
Merge branch 'strparser-Fix-lockdep-issue'
Tom Herbert says:
====================
strparser: Fix lockdep issue
When sock_owned_by_user returns true in strparser. Fix is to add and
call sock_owned_by_user_nocheck since the check for owned by user is
not an error condition in this case.
====================
Fixes: 43a0c6751a322847 ("strparser: Stream parser for messages") Reported-by: syzbot <syzkaller@googlegroups.com> Reported-and-tested-by: <syzbot+c91c53af67f9ebe599a337d2e70950366153b295@syzkaller.appspotmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Thu, 28 Dec 2017 19:00:44 +0000 (11:00 -0800)]
strparser: Call sock_owned_by_user_nocheck
strparser wants to check socket ownership without producing any
warnings. As indicated by the comment in the code, it is permissible
for owned_by_user to return true.
Fixes: 43a0c6751a322847 ("strparser: Stream parser for messages") Reported-by: syzbot <syzkaller@googlegroups.com> Reported-and-tested-by: <syzbot+c91c53af67f9ebe599a337d2e70950366153b295@syzkaller.appspotmail.com> Signed-off-by: Tom Herbert <tom@quantonium.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Willem de Bruijn [Thu, 28 Dec 2017 17:38:13 +0000 (12:38 -0500)]
skbuff: in skb_copy_ubufs unclone before releasing zerocopy
skb_copy_ubufs must unclone before it is safe to modify its
skb_shared_info with skb_zcopy_clear.
Commit b90ddd568792 ("skbuff: skb_copy_ubufs must release uarg even
without user frags") ensures that all skbs release their zerocopy
state, even those without frags.
But I forgot an edge case where such an skb arrives that is cloned.
The stack does not build such packets. Vhost/tun skbs have their
frags orphaned before cloning. TCP skbs only attach zerocopy state
when a frag is added.
But if TCP packets can be trimmed or linearized, this might occur.
Tracing the code I found no instance so far (e.g., skb_linearize
ends up calling skb_zcopy_clear if !skb->data_len).
Still, it is non-obvious that no path exists. And it is fragile to
rely on this.
Fixes: b90ddd568792 ("skbuff: skb_copy_ubufs must release uarg even without user frags") Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
In commit 42b531de17d2f6 ("tipc: Fix missing connection request
handling"), we replaced unconditional wakeup() with condtional
wakeup for clients with flags POLLIN | POLLRDNORM | POLLRDBAND.
This breaks the applications which do a connect followed by poll
with POLLOUT flag. These applications are not woken when the
connection is ESTABLISHED and hence sleep forever.
In this commit, we fix it by including the POLLOUT event for
sockets in TIPC_CONNECTING state.
Fixes: 42b531de17d2f6 ("tipc: Fix missing connection request handling") Acked-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The "reserved" field was a way, used at V4L2 API, to add new
data to existing structs without breaking userspace. However,
there are now clever ways of doing that, without needing to add
an uneeded overhead. So, get rid of them.
projects / mirror_ubuntu-kernels.git / log