15 Mar, 2018
5 commits
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Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring
Signed-off-by: Sudip Mukherjee
Signed-off-by: Greg Kroah-Hartman -
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring
Signed-off-by: Sudip Mukherjee
Signed-off-by: Greg Kroah-Hartman -
Modify pps generator driver to use the new parallel port device model.
Signed-off-by: Sudip Mukherjee
Acked-by: Rodolfo Giometti
Signed-off-by: Greg Kroah-Hartman -
Modify pps client driver to use the new parallel port device model.
In that process, added an index to mention the device number when we
have more than one parallel port.Signed-off-by: Sudip Mukherjee
Acked-by: Rodolfo Giometti
Signed-off-by: Greg Kroah-Hartman -
WCH CH382L is a PCI-E adapter with 1 parallel port. It is similair to CH382
but serial ports are not soldered on board. Detected as
Serial controller: Device 1c00:3050 (rev 10) (prog-if 05 [16850])Signed-off-by: Alexander Gerasiov
Cc: stable
Signed-off-by: Greg Kroah-Hartman
14 Mar, 2018
1 commit
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If device_register() returned an error! Always use put_device()
to give up the reference initialized in device_register().Signed-off-by: Arvind Yadav
Signed-off-by: Greg Kroah-Hartman
07 Mar, 2018
14 commits
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The refcount.c file missed the mass-addition of the SPDX lines.
Signed-off-by: Kees Cook
Signed-off-by: Greg Kroah-Hartman -
The LKDTM modules keep expanding, and it's getting weird to have each file
get a prefix. Instead, move to a subdirectory for cleaner handling.Signed-off-by: Kees Cook
Signed-off-by: Greg Kroah-Hartman -
Use sysfs to allow supporting sub-channels. The userspace application
makes request to host to create sub-channels and the UIO kernel
driver populates the sysfs per-channel directory with a binary
attribute file that can be used to read/write ring.Signed-off-by: Stephen Hemminger
Signed-off-by: Greg Kroah-Hartman -
Hyper-V balloon driver makes non-trivial calculations to convert Linux's
representation of free/used memory to what Hyper-V host expects to see. Add
a tracepoint to see what's being sent and where the data comes from.Signed-off-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
Our num_pages_onlined accounting is buggy:
1) In case we're offlining a memory block which was present at boot (e.g.
when there was no hotplug at all) we subtract 32k from 0 and as
num_pages_onlined is unsigned get a very big positive number.2) Commit 6df8d9aaf3af ("Drivers: hv: balloon: Correctly update onlined
page count") made num_pages_onlined counter accurate on onlining but
totally incorrect on offlining for partly populated regions: no matter
how many pages were onlined and what was actually added to
num_pages_onlined counter we always subtract the full region (32k) so
again, num_pages_onlined can wrap around zero. By onlining/offlining
the same partly populated region multiple times we can make the
situation worse.Solve these issues by doing accurate accounting on offlining: walk HAS
list, check for covered range and gaps.Fixes: 6df8d9aaf3af ("Drivers: hv: balloon: Correctly update onlined page count")
Signed-off-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
Instead of doing pfn_to_page() and continuosly casting page to unsigned
long just cache the pfn of the page with page_to_pfn().Signed-off-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
We have a mix of different ideas of which loglevel should be used. Unify
on the following:
- pr_info() for normal operation
- pr_warn() for 'strange' host behavior
- pr_err() for all errors.Signed-off-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
The 2016 version of Hyper-V offers the option to operate the guest VM
per-vcpu stimer's in Direct Mode, which means the timer interupts on its
own vector rather than queueing a VMbus message. Direct Mode reduces
timer processing overhead in both the hypervisor and the guest, and
avoids having timer interrupts pollute the VMbus interrupt stream for
the synthetic NIC and storage. This patch enables Direct Mode by
default on stimer0 when running on a version of Hyper-V that supports
it.In prep for coming support of Hyper-V on ARM64, the arch independent
portion of the code contains calls to routines that will be populated
on ARM64 but are not needed and do nothing on x86.Signed-off-by: Michael Kelley
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
The comments doesn't match what the current code does, also have a
typo. This patch corrects them.Signed-off-by: Haiyang Zhang
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
The usage of strchr requires inclusion of string.h.
Fixes: 0c38cda64aec ("tools: hv: remove unnecessary header files and netlink related code")
Signed-off-by: Olaf Hering
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
This patch fixes the below warnings with new glibc and gcc:
hv_vss_daemon.c:100:13: warning: In the GNU C Library, "major" is defined
by . For historical compatibility, it is currently
defined by as well, but we plan to remove this soon.
To use "major", include directly.hv_fcopy_daemon.c:42:2: note: 'snprintf' output between 2 and 1040
bytes into a destination of size 260Signed-off-by: Dexuan Cui
Cc: Stephen Hemminger
Cc: K. Y. Srinivasan
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
Just a trivial tyop fix.
Signed-off-by: Joe Perches
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
The kzalloc function is called with GFP_ATOMIC.
But according to driver call graph, it is not in atomic context,
namely no spinlock is held nor in an interrupt handler.This GFP_ATOMIC is unnecessary, and replace with GFP_KERNEL.
Signed-off-by: Jia-Ju Bai
Reviewed-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
On Hyper-V the VF NIC has the same MAC as the related synthetic NIC.
VF NIC can work under the synthetic NIC transparently, without its
own IP address. The existing KVP daemon only gets IP from the first
NIC matching a MAC address, and may not be able to find the IP in
this case.This patch fixes the problem by searching the NIC matching the MAC,
and having an IP address. So, the IP address will be found and
reported to the host successfully.Signed-off-by: Haiyang Zhang
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
05 Mar, 2018
6 commits
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Pull x86 fixes from Thomas Gleixner:
"A small set of fixes for x86:- Add missing instruction suffixes to assembly code so it can be
compiled by newer GAS versions without warnings.- Switch refcount WARN exceptions to UD2 as we did in general
- Make the reboot on Intel Edison platforms work
- A small documentation update so text and sample command match"
* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation, x86, resctrl: Make text and sample command match
x86/platform/intel-mid: Handle Intel Edison reboot correctly
x86/asm: Add instruction suffixes to bitops
x86/entry/64: Add instruction suffix
x86/refcounts: Switch to UD2 for exceptions -
Pull x86/pti fixes from Thomas Gleixner:
"Three fixes related to melted spectrum:- Sync the cpu_entry_area page table to initial_page_table on 32 bit.
Otherwise suspend/resume fails because resume uses
initial_page_table and triggers a triple fault when accessing the
cpu entry area.- Zero the SPEC_CTL MRS on XEN before suspend to address a
shortcoming in the hypervisor.- Fix another switch table detection issue in objtool"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table
objtool: Fix another switch table detection issue
x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend -
Pull timer fixes from Thomas Gleixner:
"A small set of fixes from the timer departement:- Add a missing timer wheel clock forward when migrating timers off a
unplugged CPU to prevent operating on a stale clock base and
missing timer deadlines.- Use the proper shift count to extract data from a register value to
prevent evaluating unrelated bits- Make the error return check in the FSL timer driver work correctly.
Checking an unsigned variable for less than zero does not really
work well.- Clarify the confusing comments in the ARC timer code"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timers: Forward timer base before migrating timers
clocksource/drivers/arc_timer: Update some comments
clocksource/drivers/mips-gic-timer: Use correct shift count to extract data
clocksource/drivers/fsl_ftm_timer: Fix error return checking -
Pull irq fixlet from Thomas Gleixner:
"Just a documentation update for the missing device tree property of
the R-Car M3N interrupt controller"* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
dt-bindings/irqchip/renesas-irqc: Document R-Car M3-N support -
Pull btrfs fixes from David Sterba:
- when NR_CPUS is large, a SRCU structure can significantly inflate
size of the main filesystem structure that would not be possible to
allocate by kmalloc, so the kvalloc fallback is used- improved error handling
- fix endiannes when printing some filesystem attributes via sysfs,
this is could happen when a filesystem is moved between different
endianity hosts- send fixes: the NO_HOLE mode should not send a write operation for a
file hole- fix log replay for for special files followed by file hardlinks
- fix log replay failure after unlink and link combination
- fix max chunk size calculation for DUP allocation
* tag 'for-4.16-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Btrfs: fix log replay failure after unlink and link combination
Btrfs: fix log replay failure after linking special file and fsync
Btrfs: send, fix issuing write op when processing hole in no data mode
btrfs: use proper endianness accessors for super_copy
btrfs: alloc_chunk: fix DUP stripe size handling
btrfs: Handle btrfs_set_extent_delalloc failure in relocate_file_extent_cluster
btrfs: handle failure of add_pending_csums
btrfs: use kvzalloc to allocate btrfs_fs_info
04 Mar, 2018
5 commits
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Pull i2c fixes from Wolfram Sang:
"A driver fix and a documentation fix (which makes dependency handling
for the next cycle easier)"* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: octeon: Prevent error message on bus error
dt-bindings: at24: sort manufacturers alphabetically -
Pull libnvdimm fixes from Dan Williams:
"A 4.16 regression fix, three fixes for -stable, and a cleanup fix:- During the merge window support for the new ACPI NVDIMM Platform
Capabilities structure disabled support for "deep flush", a
force-unit- access like mechanism for persistent memory. Restore
that mechanism.- VFIO like RDMA is yet one more memory registration / pinning
interface that is incompatible with Filesystem-DAX. Disable long
term pins of Filesystem-DAX mappings via VFIO.- The Filesystem-DAX detection to prevent long terms pins mistakenly
also disabled Device-DAX pins which are not subject to the same
block- map collision concerns.- Similar to the setup path, softlockup warnings can trigger in the
shutdown path for large persistent memory namespaces. Teach
for_each_device_pfn() to perform cond_resched() in all cases.- Boaz noticed that the might_sleep() in dax_direct_access() is stale
as of the v4.15 kernel.These have received a build success notification from the 0day robot,
and the longterm pin fixes have appeared in -next. However, I recently
rebased the tree to remove some other fixes that need to be reworked
after review feedback.* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
memremap: fix softlockup reports at teardown
libnvdimm: re-enable deep flush for pmem devices via fsync()
vfio: disable filesystem-dax page pinning
dax: fix vma_is_fsdax() helper
dax: ->direct_access does not sleep anymore -
…masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- suppress sparse warnings about unknown attributes
- fix typos and stale comments
- fix build error of arch/sh
- fix wrong use of ld-option vs cc-ldoption
- remove redundant GCC_PLUGINS_CFLAGS assignment
- fix another memory leak of Kconfig
- fix line number in error messages of Kconfig
- do not write confusing CONFIG_DEFCONFIG_LIST out to .config
- add xstrdup() to Kconfig to handle memory shortage errors
- show also a Debian package name if ncurses is missing
* tag 'kbuild-fixes-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
MAINTAINERS: take over Kconfig maintainership
kconfig: fix line number in recursive inclusion error message
Coccinelle: memdup: Fix typo in warning messages
kconfig: Update ncurses package names for menuconfig
kbuild/kallsyms: trivial typo fix
kbuild: test --build-id linker flag by ld-option instead of cc-ldoption
kbuild: drop superfluous GCC_PLUGINS_CFLAGS assignment
kconfig: Don't leak choice names during parsing
sh: fix build error for empty CONFIG_BUILTIN_DTB_SOURCE
kconfig: set SYMBOL_AUTO to the symbol marked with defconfig_list
kconfig: add xstrdup() helper
kbuild: disable sparse warnings about unknown attributes
Makefile: Fix lying comment re. silentoldconfig -
Pull media fixes from Mauro Carvalho Chehab:
- some build fixes with randconfigs
- an m88ds3103 fix to prevent an OOPS if the chip doesn't provide the
right version during probe (with can happen if the hardware hangs)- a potential out of array bounds reference in tvp5150
- some fixes and improvements in the DVB memory mapped API (added for
kernel 4.16)* tag 'media/v4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
media: vb2: Makefile: place vb2-trace together with vb2-core
media: Don't let tvp5150_get_vbi() go out of vbi_ram_default array
media: dvb: update buffer mmaped flags and frame counter
media: dvb: add continuity error indicators for memory mapped buffers
media: dmxdev: Fix the logic that enables DMA mmap support
media: dmxdev: fix error code for invalid ioctls
media: m88ds3103: don't call a non-initalized function
media: au0828: add VIDEO_V4L2 dependency
media: dvb: fix DVB_MMAP dependency
media: dvb: fix DVB_MMAP symbol name
media: videobuf2: fix build issues with vb2-trace
media: videobuf2: Add VIDEOBUF2_V4L2 Kconfig option for VB2 V4L2 part -
Pull watchdog fixes from Wim Van Sebroeck:
- rave-sp: add NVMEM dependency
- build fixes for i6300esb_wdt, xen_wdt and sp5100_tco
* tag 'linux-watchdog-4.16-fixes-1' of git://www.linux-watchdog.org/linux-watchdog:
watchdog: sp5100_tco.c: fix potential build failure
watchdog: xen_wdt: fix potential build failure
watchdog: i6300esb: fix build failure
watchdog: rave-sp: add NVMEM dependency
03 Mar, 2018
9 commits
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Pull KVM fixes from Radim Krčmář:
"x86:- fix NULL dereference when using userspace lapic
- optimize spectre v1 mitigations by allowing guests to use LFENCE
- make microcode revision configurable to prevent guests from
unnecessarily blacklisting spectre v2 mitigation feature"* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: fix vcpu initialization with userspace lapic
KVM: X86: Allow userspace to define the microcode version
KVM: X86: Introduce kvm_get_msr_feature()
KVM: SVM: Add MSR-based feature support for serializing LFENCE
KVM: x86: Add a framework for supporting MSR-based features -
The cond_resched() currently in the setup path needs to be duplicated in
the teardown path. Rather than require each instance of
for_each_device_pfn() to open code the same sequence, embed it in the
helper.Link: https://github.com/intel/ixpdimm_sw/issues/11
Cc: "Jérôme Glisse"
Cc: Michal Hocko
Cc: Christoph Hellwig
Cc:
Fixes: 71389703839e ("mm, zone_device: Replace {get, put}_zone_device_page()...")
Signed-off-by: Dan Williams -
Re-enable deep flush so that users always have a way to be sure that a
write makes it all the way out to media. Writes from the PMEM driver
always arrive at the NVDIMM since movnt is used to bypass the cache, and
the driver relies on the ADR (Asynchronous DRAM Refresh) mechanism to
flush write buffers on power failure. The Deep Flush mechanism is there
to explicitly write buffers to protect against (rare) ADR failure. This
change prevents a regression in deep flush behavior so that applications
can continue to depend on fsync() as a mechanism to trigger deep flush
in the filesystem-DAX case.Fixes: 06e8ccdab15f4 ("acpi: nfit: Add support for detect platform CPU cache...")
Reviewed-by: Jeff Moyer
Signed-off-by: Dave Jiang
Signed-off-by: Dan Williams -
I have recently picked up Kconfig patches to my tree without any
declaration. Making it official now.Signed-off-by: Masahiro Yamada
Acked-by: Linus Torvalds -
Filesystem-DAX is incompatible with 'longterm' page pinning. Without
page cache indirection a DAX mapping maps filesystem blocks directly.
This means that the filesystem must not modify a file's block map while
any page in a mapping is pinned. In order to prevent the situation of
userspace holding of filesystem operations indefinitely, disallow
'longterm' Filesystem-DAX mappings.RDMA has the same conflict and the plan there is to add a 'with lease'
mechanism to allow the kernel to notify userspace that the mapping is
being torn down for block-map maintenance. Perhaps something similar can
be put in place for vfio.Note that xfs and ext4 still report:
"DAX enabled. Warning: EXPERIMENTAL, use at your own risk"
...at mount time, and resolving the dax-dma-vs-truncate problem is one
of the last hurdles to remove that designation.Acked-by: Alex Williamson
Cc: Michal Hocko
Cc: kvm@vger.kernel.org
Cc:
Reported-by: Haozhong Zhang
Tested-by: Haozhong Zhang
Fixes: d475c6346a38 ("dax,ext2: replace XIP read and write with DAX I/O")
Reviewed-by: Christoph Hellwig
Signed-off-by: Dan Williams -
Pull PCI fixes from Bjorn Helgaas:
- Update pci.ids location (documentation only) (Randy Dunlap)
- Fix a crash when BIOS didn't assign a BAR and we try to enlarge it
(Christian König)* tag 'pci-v4.16-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Allow release of resources that were never assigned
PCI: Update location of pci.ids file -
Pull parisc fixes from Helge Deller:
- a patch to change the ordering of cache and TLB flushes to hopefully
fix the random segfaults we very rarely face (by Dave Anglin).- a patch to hide the virtual kernel memory layout due to security
reasons.- two small patches to make the kernel run more smoothly under qemu.
* 'parisc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Reduce irq overhead when run in qemu
parisc: Use cr16 interval timers unconditionally on qemu
parisc: Check if secondary CPUs want own PDC calls
parisc: Hide virtual kernel memory layout
parisc: Fix ordering of cache and TLB flushes -
Pull xen fixes from Juergen Gross:
"Five minor fixes for Xen-specific drivers"* tag 'for-linus-4.16a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
pvcalls-front: 64-bit align flags
x86/xen: add tty0 and hvc0 as preferred consoles for dom0
xen-netfront: Fix hang on device removal
xen/pirq: fix error path cleanup when binding MSIs
xen/pvcalls: fix null pointer dereference on map->sock -
Pull ceph fixes from Ilya Dryomov:
"A cap handling fix from Zhi that ensures that metadata writeback isn't
delayed and three error path memory leak fixups from Chengguang"* tag 'ceph-for-4.16-rc4' of git://github.com/ceph/ceph-client:
ceph: fix potential memory leak in init_caches()
ceph: fix dentry leak when failing to init debugfs
libceph, ceph: avoid memory leak when specifying same option several times
ceph: flush dirty caps of unlinked inode ASAP
