Rename to tsens_plat_data to denote that it is platform-data passed in
at compile-time.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Describe how the TSENS device and the various sensors connected to it
are described in the driver
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Define pr_fmt macro to add a prefix to the message,
this can make the thermal log better recognized.
Before:
[ 0.602672] nfc: nfc_init: NFC Core ver 0.1
[ 0.602828] NET: Registered protocol family 39
[ 0.603435] clocksource: Switched to clocksource mct-frc
[ 0.746216] failed to build thermal zone cpu-thermal: -22
[ 0.746451] NET: Registered protocol family 2
After:
[ 0.602804] NET: Registered protocol family 39
[ 0.603463] clocksource: Switched to clocksource mct-frc
[ 0.746309] thermal_sys: failed to build thermal zone cpu-thermal: -22
[ 0.746545] NET: Registered protocol family 2
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Parse Over Current settings from DT and program them to
generate interrupts. Also enable hw throttling whenever
there are OC events. Log the OC events as debug messages.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Add OC HW throttle configuration for soctherm in DT.
It is used to describe the OCx throttle events.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Add support to generate OC (over-current) interrupts to
indicate the OC event and print out alarm messages.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Support to generate an interrupt when the temperature
crosses a programmed threshold and notify the thermal framework.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Add support to trigger pulse skippers on the GPU
when a HOT trip point is triggered. The pulse skippers
can be signalled to throttle at low, medium and high
depths\levels.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Currently the critical trip points in thermal framework are the only
way to specify a temperature at which HW should shutdown. This is
insufficient for certain platforms which would want an orderly
software shutdown in addition to HW shutdown.
This change support to parse "nvidia, thermtrips" property,
it allows soctherm DT to specify thermtrip temperatures so that
critical trip points framework can be used for doing software
shutdown.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Add optional property "nvidia,thermtrips".
If present, these trips will be used as HW shutdown trips,
and critical trips will be used as SW shutdown trips.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
- Fix function tracer and unwinder dependencies so that we don't
end up building kernels that will crash.
- Fix ARMv7M nommu initialisation (missing register initialisation)
- Fix EFI decompressor entry (ensuring barrier instructions are
enabled prior to use.)
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"A small number of ARM fixes
- Fix function tracer and unwinder dependencies so that we don't end
up building kernels that will crash
- Fix ARMv7M nommu initialisation (missing register initialisation)
- Fix EFI decompressor entry (ensuring barrier instructions are
enabled prior to use)"
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8857/1: efi: enable CP15 DMB instructions before cleaning the cache
ARM: 8856/1: NOMMU: Fix CCR register faulty initialization when MPU is disabled
ARM: fix function graph tracer and unwinder dependencies
A one-liner to make our Radix MMU support depend on HUGETLB_PAGE. We use some of
the hugetlb inlines (eg. pud_huge()) when operating on the linear mapping and if
they're compiled into empty wrappers we can corrupt memory.
Then two fixes to our VFIO IOMMU code. The first is not a regression but fixes
the locking to avoid a user-triggerable deadlock.
The second does fix a regression since rc1, and depends on the first fix. It
makes it possible to run guests with large amounts of memory again (~256GB).
Thanks to:
Alexey Kardashevskiy.
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Merge tag 'powerpc-5.1-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"A one-liner to make our Radix MMU support depend on HUGETLB_PAGE. We
use some of the hugetlb inlines (eg. pud_huge()) when operating on the
linear mapping and if they're compiled into empty wrappers we can
corrupt memory.
Then two fixes to our VFIO IOMMU code. The first is not a regression
but fixes the locking to avoid a user-triggerable deadlock.
The second does fix a regression since rc1, and depends on the first
fix. It makes it possible to run guests with large amounts of memory
again (~256GB).
Thanks to Alexey Kardashevskiy"
* tag 'powerpc-5.1-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/mm_iommu: Allow pinning large regions
powerpc/mm_iommu: Fix potential deadlock
powerpc/mm/radix: Make Radix require HUGETLB_PAGE
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Merge tag 'for-linus-20190428' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A set of io_uring fixes that should go into this release. In
particular, this contains:
- The mutex lock vs ctx ref count fix (me)
- Removal of a dead variable (me)
- Two race fixes (Stefan)
- Ring head/tail condition fix for poll full SQ detection (Stefan)"
* tag 'for-linus-20190428' of git://git.kernel.dk/linux-block:
io_uring: remove 'state' argument from io_{read,write} path
io_uring: fix poll full SQ detection
io_uring: fix race condition when sq threads goes sleeping
io_uring: fix race condition reading SQ entries
io_uring: fail io_uring_register(2) on a dying io_uring instance
One core bug fix and a few driver ones
- FRWR memory registration for hfi1/qib didn't work with with some iovas
causing a NFSoRDMA failure regression due to a fix in the NFS side
- A command flow error in mlx5 allowed user space to send a corrupt
command (and also smash the kernel stack we've since learned)
- Fix a regression and some bugs with device hot unplug that was
discovered while reviewing Andrea's patches
- hns has a failure if the user asks for certain QP configurations
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"One core bug fix and a few driver ones
- FRWR memory registration for hfi1/qib didn't work with with some
iovas causing a NFSoRDMA failure regression due to a fix in the NFS
side
- A command flow error in mlx5 allowed user space to send a corrupt
command (and also smash the kernel stack we've since learned)
- Fix a regression and some bugs with device hot unplug that was
discovered while reviewing Andrea's patches
- hns has a failure if the user asks for certain QP configurations"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/hns: Bugfix for mapping user db
RDMA/ucontext: Fix regression with disassociate
RDMA/mlx5: Use rdma_user_map_io for mapping BAR pages
RDMA/mlx5: Do not allow the user to write to the clock page
IB/mlx5: Fix scatter to CQE in DCT QP creation
IB/rdmavt: Fix frwr memory registration
dmaengine fixes for v5.1-rc7
- fix for wrong register use in mediatek driver
- fix in sh driver for glitch is tx_status and treating 0 a valid
reside for cyclic
- fix in bcm driver for using right memory allocation flag
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Merge tag 'dmaengine-fix-5.1-rc7' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
- fix for wrong register use in mediatek driver
- fix in sh driver for glitch is tx_status and treating 0 a valid
residue for cyclic
- fix in bcm driver for using right memory allocation flag
* tag 'dmaengine-fix-5.1-rc7' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: mediatek-cqdma: fix wrong register usage in mtk_cqdma_start
dmaengine: sh: rcar-dmac: Fix glitch in dmaengine_tx_status
dmaengine: sh: rcar-dmac: With cyclic DMA residue 0 is valid
dmaengine: bcm2835: Avoid GFP_KERNEL in device_prep_slave_sg
Pull input fixes from Dmitry Torokhov:
"Just a couple of fixups for Synaptics RMI4 driver and allowing
snvs_pwrkey to be selected on more boards"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: synaptics-rmi4 - write config register values to the right offset
Input: synaptics-rmi4 - fix possible double free
Input: snvs_pwrkey - make it depend on ARCH_MXC
Pull x86 fixes from Ingo Molnar:
- Fix an early boot crash in the RSDP parsing code by effectively
turning off the parsing call - we ran out of time but want to fix the
regression. The more involved fix is being worked on.
- Fix a crash that can trigger in the kmemlek code.
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Fix a crash with kmemleak_scan()
x86/boot: Disable RSDP parsing temporarily
Pull scheduler fix from Ingo Molnar:
"Fix a division by zero bug that can trigger in the NUMA placement
code"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/numa: Fix a possible divide-by-zero
Pull perf fix from Ingo Molnar:
"A cstate event enumeration fix for Kaby/Coffee Lake CPUs"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel: Update KBL Package C-state events to also include PC8/PC9/PC10 counters
This way, slhc_free() accepts what slhc_init() returns, whether that is
an error or not.
In particular, the pattern in sl_alloc_bufs() is
slcomp = slhc_init(16, 16);
...
slhc_free(slcomp);
for the error handling path, and rather than complicate that code, just
make it ok to always free what was returned by the init function.
That's what the code used to do before commit 4ab42d78e3 ("ppp, slip:
Validate VJ compression slot parameters completely") when slhc_init()
just returned NULL for the error case, with no actual indication of the
details of the error.
Reported-by: syzbot+45474c076a4927533d2e@syzkaller.appspotmail.com
Fixes: 4ab42d78e3 ("ppp, slip: Validate VJ compression slot parameters completely")
Acked-by: Ben Hutchings <ben@decadent.org.uk>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge misc fixes from Andrew Morton:
"9 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
mm/page_alloc.c: fix never set ALLOC_NOFRAGMENT flag
mm/page_alloc.c: avoid potential NULL pointer dereference
mm, page_alloc: always use a captured page regardless of compaction result
mm: do not boost watermarks to avoid fragmentation for the DISCONTIG memory model
lib/test_vmalloc.c: do not create cpumask_t variable on stack
lib/Kconfig.debug: fix build error without CONFIG_BLOCK
zram: pass down the bvec we need to read into in the work struct
mm/memory_hotplug.c: drop memory device reference after find_memory_block()
Currently any changed config register values don't take effect, as the
function to write them back is called with the wrong register offset.
Fixes: ff8f83708b (Input: synaptics-rmi4 - add support for 2D
sensors and F11)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
- keep the tail of an unaligned initrd reserved
- adjust ftrace_make_call() to deal with the relative nature of PLTs
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- keep the tail of an unaligned initrd reserved
- adjust ftrace_make_call() to deal with the relative nature of PLTs
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/module: ftrace: deal with place relative nature of PLTs
arm64: mm: Ensure tail of unaligned initrd is reserved
- Use "nosteal" for ring buffer splice pages
- Memory leak fix in error path of trace_pid_write()
- Fix preempt_enable_no_resched() (use preempt_enable()) in ring buffer code
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Merge tag 'trace-v5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Three tracing fixes:
- Use "nosteal" for ring buffer splice pages
- Memory leak fix in error path of trace_pid_write()
- Fix preempt_enable_no_resched() (use preempt_enable()) in ring
buffer code"
* tag 'trace-v5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
trace: Fix preempt_enable_no_resched() abuse
tracing: Fix a memory leak by early error exit in trace_pid_write()
tracing: Fix buffer_ref pipe ops
- Fix a bug on the errorpath of gpiochip_add_data_with_key()
- IRQ type setting on the spreadtrum GPIO driver
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Merge tag 'gpio-v5.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Not much to say about them, regular fixes:
- Fix a bug on the errorpath of gpiochip_add_data_with_key()
- IRQ type setting on the spreadtrum GPIO driver"
* tag 'gpio-v5.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: Fix gpiochip_add_data_with_key() error path
gpio: eic: sprd: Fix incorrect irq type setting for the sync EIC
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Merge tag 'for-5.1-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fix from David Sterba:
"One patch to fix a crash in io submission path, due to memory
allocation errors.
In short, the multipage bio work that landed in 5.1 caused larger bios
that in turn require larger temporary memory for checksums. The patch
is a workaround, we're going to rework the allocation so it does not
require the vmalloc fallback.
It took a while to identify that it's caused by patches in 5.1 and not
a patchset that did some changes in error handling in the code. I've
tested it on various memory/cpu combinations, it could hit OOM but
does not crash.
The timestamp of the patch is less than a day due to updates in the
changelog, tests were running meanwhile"
* tag 'for-5.1-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: Switch memory allocations in async csum calculation path to kvmalloc
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Merge tag '5.1-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Three small SMB3 fixes (all for stable as well): two leaks and a
rename bug"
* tag '5.1-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix page reference leak with readv/writev
cifs: do not attempt cifs operation on smb2+ rename error
cifs: fix memory leak in SMB2_read
Commit 0a79cdad5e ("mm: use alloc_flags to record if kswapd can wake")
removed setting of the ALLOC_NOFRAGMENT flag. Bring it back.
The runtime effect is that ALLOC_NOFRAGMENT behaviour is restored so
that allocations are spread across local zones to avoid fragmentation
due to mixing pageblocks as long as possible.
Link: http://lkml.kernel.org/r/20190423120806.3503-2-aryabinin@virtuozzo.com
Fixes: 0a79cdad5e ("mm: use alloc_flags to record if kswapd can wake")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ac.preferred_zoneref->zone passed to alloc_flags_nofragment() can be NULL.
'zone' pointer unconditionally derefernced in alloc_flags_nofragment().
Bail out on NULL zone to avoid potential crash. Currently we don't see
any crashes only because alloc_flags_nofragment() has another bug which
allows compiler to optimize away all accesses to 'zone'.
Link: http://lkml.kernel.org/r/20190423120806.3503-1-aryabinin@virtuozzo.com
Fixes: 6bb154504f ("mm, page_alloc: spread allocations across zones before introducing fragmentation")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
During the development of commit 5e1f0f098b ("mm, compaction: capture
a page under direct compaction"), a paranoid check was added to ensure
that if a captured page was available after compaction that it was
consistent with the final state of compaction. The intent was to catch
serious programming bugs such as using a stale page pointer and causing
corruption problems.
However, it is possible to get a captured page even if compaction was
unsuccessful if an interrupt triggered and happened to free pages in
interrupt context that got merged into a suitable high-order page. It's
highly unlikely but Li Wang did report the following warning on s390
occuring when testing OOM handling. Note that the warning is slightly
edited for clarity.
WARNING: CPU: 0 PID: 9783 at mm/page_alloc.c:3777 __alloc_pages_direct_compact+0x182/0x190
Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs
lockd grace fscache sunrpc pkey ghash_s390 prng xts aes_s390
des_s390 des_generic sha512_s390 zcrypt_cex4 zcrypt vmur binfmt_misc
ip_tables xfs libcrc32c dasd_fba_mod qeth_l2 dasd_eckd_mod dasd_mod
qeth qdio lcs ctcm ccwgroup fsm dm_mirror dm_region_hash dm_log
dm_mod
CPU: 0 PID: 9783 Comm: copy.sh Kdump: loaded Not tainted 5.1.0-rc 5 #1
This patch simply removes the check entirely instead of trying to be
clever about pages freed from interrupt context. If a serious
programming error was introduced, it is highly likely to be caught by
prep_new_page() instead.
Link: http://lkml.kernel.org/r/20190419085133.GH18914@techsingularity.net
Fixes: 5e1f0f098b ("mm, compaction: capture a page under direct compaction")
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reported-by: Li Wang <liwang@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mikulas Patocka reported that commit 1c30844d2d ("mm: reclaim small
amounts of memory when an external fragmentation event occurs") "broke"
memory management on parisc.
The machine is not NUMA but the DISCONTIG model creates three pgdats
even though it's a UMA machine for the following ranges
0) Start 0x0000000000000000 End 0x000000003fffffff Size 1024 MB
1) Start 0x0000000100000000 End 0x00000001bfdfffff Size 3070 MB
2) Start 0x0000004040000000 End 0x00000040ffffffff Size 3072 MB
Mikulas reported:
With the patch 1c30844d2, the kernel will incorrectly reclaim the
first zone when it fills up, ignoring the fact that there are two
completely free zones. Basiscally, it limits cache size to 1GiB.
For example, if I run:
# dd if=/dev/sda of=/dev/null bs=1M count=2048
- with the proper kernel, there should be "Buffers - 2GiB"
when this command finishes. With the patch 1c30844d2, buffers
will consume just 1GiB or slightly more, because the kernel was
incorrectly reclaiming them.
The page allocator and reclaim makes assumptions that pgdats really
represent NUMA nodes and zones represent ranges and makes decisions on
that basis. Watermark boosting for small pgdats leads to unexpected
results even though this would have behaved reasonably on SPARSEMEM.
DISCONTIG is essentially deprecated and even parisc plans to move to
SPARSEMEM so there is no need to be fancy, this patch simply disables
watermark boosting by default on DISCONTIGMEM.
Link: http://lkml.kernel.org/r/20190419094335.GJ18914@techsingularity.net
Fixes: 1c30844d2d ("mm: reclaim small amounts of memory when an external fragmentation event occurs")
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Tested-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
On my "Intel(R) Xeon(R) W-2135 CPU @ 3.70GHz" system(12 CPUs) i get the
warning from the compiler about frame size:
warning: the frame size of 1096 bytes is larger than 1024 bytes [-Wframe-larger-than=]
the size of cpumask_t depends on number of CPUs, therefore just make use
of cpumask_of() in set_cpus_allowed_ptr() as a second argument.
Link: http://lkml.kernel.org/r/20190418193925.9361-1-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Roman Gushchin <guro@fb.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If CONFIG_TEST_KMOD is set to M, while CONFIG_BLOCK is not set, XFS and
BTRFS can not be compiled successly.
Link: http://lkml.kernel.org/r/20190410075434.35220-1-yuehaibing@huawei.com
Fixes: d9c6a72d6f ("kmod: add test driver to stress test the module loader")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When scheduling work item to read page we need to pass down the proper
bvec struct which points to the page to read into. Before this patch it
uses a randomly initialized bvec (only if PAGE_SIZE != 4096) which is
wrong.
Note that without this patch on arch/kernel where PAGE_SIZE != 4096
userspace could read random memory through a zram block device (thought
userspace probably would have no control on the address being read).
Link: http://lkml.kernel.org/r/20190408183219.26377-1-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Right now we are using find_memory_block() to get the node id for the
pfn range to online. We are missing to drop a reference to the memory
block device. While the device still gets unregistered via
device_unregister(), resulting in no user visible problem, the device is
never released via device_release(), resulting in a memory leak. Fix
that by properly using a put_device().
Link: http://lkml.kernel.org/r/20190411110955.1430-1-david@redhat.com
Fixes: d0dc12e86b ("mm/memory_hotplug: optimize memory hotplug")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Pankaj Gupta <pagupta@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Arun KS <arunks@codeaurora.org>
Cc: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Unless the very next line is schedule(), or implies it, one must not use
preempt_enable_no_resched(). It can cause a preemption to go missing and
thereby cause arbitrary delays, breaking the PREEMPT=y invariant.
Link: http://lkml.kernel.org/r/20190423200318.GY14281@hirez.programming.kicks-ass.net
Cc: Waiman Long <longman@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: the arch/x86 maintainers <x86@kernel.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: huang ying <huang.ying.caritas@gmail.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: stable@vger.kernel.org
Fixes: 2c2d7329d8 ("tracing/ftrace: use preempt_enable_no_resched_notrace in ring_buffer_time_stamp()")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
In trace_pid_write(), the buffer for trace parser is allocated through
kmalloc() in trace_parser_get_init(). Later on, after the buffer is used,
it is then freed through kfree() in trace_parser_put(). However, it is
possible that trace_pid_write() is terminated due to unexpected errors,
e.g., ENOMEM. In that case, the allocated buffer will not be freed, which
is a memory leak bug.
To fix this issue, free the allocated buffer when an error is encountered.
Link: http://lkml.kernel.org/r/1555726979-15633-1-git-send-email-wang6495@umn.edu
Fixes: f4d34a87e9 ("tracing: Use pid bitmap instead of a pid array for set_event_pid")
Cc: stable@vger.kernel.org
Signed-off-by: Wenwen Wang <wang6495@umn.edu>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This fixes multiple issues in buffer_pipe_buf_ops:
- The ->steal() handler must not return zero unless the pipe buffer has
the only reference to the page. But generic_pipe_buf_steal() assumes
that every reference to the pipe is tracked by the page's refcount,
which isn't true for these buffers - buffer_pipe_buf_get(), which
duplicates a buffer, doesn't touch the page's refcount.
Fix it by using generic_pipe_buf_nosteal(), which refuses every
attempted theft. It should be easy to actually support ->steal, but the
only current users of pipe_buf_steal() are the virtio console and FUSE,
and they also only use it as an optimization. So it's probably not worth
the effort.
- The ->get() and ->release() handlers can be invoked concurrently on pipe
buffers backed by the same struct buffer_ref. Make them safe against
concurrency by using refcount_t.
- The pointers stored in ->private were only zeroed out when the last
reference to the buffer_ref was dropped. As far as I know, this
shouldn't be necessary anyway, but if we do it, let's always do it.
Link: http://lkml.kernel.org/r/20190404215925.253531-1-jannh@google.com
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@vger.kernel.org
Fixes: 73a757e631 ("ring-buffer: Return reader page back into existing ring buffer")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
- Fix the DP color space conversion matrix setup to avoid bugs where
disabling the overlay plane while both primary and overlay plane are
routed via the CSC unit would not reconfigure the CSC routing
properly, leaving the display in a nonworking state, or the CSC
setting from a previously set mode would be left behind, causing
wrong colors when reenabling the display in certain configurations.
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Merge tag 'imx-drm-fixes-2019-04-25' of git://git.pengutronix.de/pza/linux into drm-fixes
drm/imx: fix DP CSC handling
- Fix the DP color space conversion matrix setup to avoid bugs where
disabling the overlay plane while both primary and overlay plane are
routed via the CSC unit would not reconfigure the CSC routing
properly, leaving the display in a nonworking state, or the CSC
setting from a previously set mode would be left behind, causing
wrong colors when reenabling the display in certain configurations.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1556183136.2271.3.camel@pengutronix.de
- vc4: Fix a compilation error and memory leak
- dw-hdmi: Fix an overflow on Rockchip and SCDC configuration
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Merge tag 'drm-misc-fixes-2019-04-25' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
- sun4i: Fix module loading / unloading
- vc4: Fix a compilation error and memory leak
- dw-hdmi: Fix an overflow on Rockchip and SCDC configuration
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190425132739.pngmfiqucqmulxkz@flea
