From: Frederic Weisbecker
The nocb_cb_wait() function first sets the rdp->nocb_cb_sleep flag to
true by after invoking the callbacks, and then sets it back to false if
it finds more callbacks that are ready to invoke.
This is confusing and will become unsafe if this flag is ever read
locklessly.
From: Frederic Weisbecker
Provide CONFIG_PROVE_RCU sanity checks to ensure we are always reading
the offloaded state of an rdp in a safe and stable way and prevent from
its value to be changed under us. We must either hold the barrier mutex,
the cpu-hotplug lock (read or write) or the nocb lock.
On Wed, Mar 03, 2021 at 04:02:05PM -0800, Jacob Pan wrote:
> > The interface definitely can be reused. But IOASID has a different
> > behavior in terms of migration and ownership checking. I guess SEV key
> > IDs are not tied to a process whereas IOASIDs are. Perhaps this can be
> > solved by addin
From: Frederic Weisbecker
This commit explains why softirqs need to be disabled while invoking
callbacks, even when callback processing has been offloaded. After
all, invoking callbacks concurrently is one thing, but concurrently
invoking the same callback is quite another.
Reported-by: Boqun F
From: Frederic Weisbecker
It makes no sense to de-offload an offline CPU because that CPU will never
invoke any remaining callbacks. It also makes little sense to offload an
offline CPU because any pending RCU callbacks were migrated when that CPU
went offline. Yes, it is in theory possible to
From: Frederic Weisbecker
Enqueuing a local timer after the tick has been stopped will result in
the timer being ignored until the next random interrupt.
Perform sanity checks to report these situations.
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Rafael J. Wysocki
Signed-off-
I'm looking at redesigning the on-disk cache format used by fscache's
cachefiles driver to try and eliminate the number of synchronous metadata
operations done by the driver, to improve culling performance and to reduce
the amount of opens/files open. I also need to stop relying on the backing
fil
Hello!
This series contains updates for no-callbacks (NOCBs) CPUs:
1. Detect unsafe checks for offloaded rdp, courtesy of Frederic
Weisbecker.
2. Report ignored local enqueue in nohz mode, courtesy of Frederic
Weisbecker.
3. Comment the reason behind BH disablemen
Quoting Lee Jones (2021-03-03 06:24:30)
> Headers must describe their parameters.
>
> Fixes the following W=1 kernel build warning(s):
>
> drivers/clk/sunxi/clk-sun9i-core.c:27: warning: Function parameter or member
> 'req' not described in 'sun9i_a80_get_pll4_factors'
> drivers/clk/sunxi/clk-
On Thu, Mar 04, 2021 at 03:33:30AM +0900, Masahiro Yamada wrote:
> This guarding is wrong. As Documentation/kbuild/llvm.rst notes, LLVM=1
> switches the default of tools, but you can still override CC, LD, etc.
> individually.
>
> BTW, LLVM is not 1/0 flag. If LLVM is not passed in, it is empty.
>
From: Paul Gortmaker
It makes sense to do all the checks in check_region() and not 1/2
in check_region and 1/2 in set_region.
Since set_region is called immediately after check_region, the net
effect on runtime is zero, but it gets rid of an if (...) return...
Cc: Yury Norov
Cc: Rasmus Villemo
Quoting Rajendra Nayak (2021-03-03 04:17:56)
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index fe4fdb9..aa6f847 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -239,6 +239,25 @@
>
From: Paul Gortmaker
This will reduce parameter passing and enable using nbits as part
of future dynamic region parameter parsing.
Cc: Yury Norov
Cc: Rasmus Villemoes
Cc: Andy Shevchenko
Suggested-by: Yury Norov
Acked-by: Yury Norov
Reviewed-by: Andy Shevchenko
Signed-off-by: Paul Gortmake
Hi Jordan,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f69d02e37a85645aa90d18cacfff36dba370f797
commit: 650b55b707fdfa764e9f2b81314d3eb4216fb962 powerpc: Add prefixed
instructions to instruction data type
date:
On Wed, Mar 03, 2021 at 06:54:41PM +, Will Deacon wrote:
> [+Marc]
>
> On Tue, Mar 02, 2021 at 02:55:43PM +, Ashish Kalra wrote:
> > On Fri, Feb 26, 2021 at 09:44:41AM -0800, Sean Christopherson wrote:
> > > On Fri, Feb 26, 2021, Ashish Kalra wrote:
> > > > On Thu, Feb 25, 2021 at 02:59:27
Since 5.12-rc1, the Device Tree blob must now be properly aligned.
Therefore, the decompress routine must be careful to copy the blob at
the next aligned address after the kernel image.
This commit fixes the kernel sometimes not booting with a Device Tree
blob appended to it.
Fixes: c4d5e638d6e9
From: Paul Gortmaker
Add tests that specify a valid range, but one that is outside the
width of the bitmap for which it is to be applied to. These should
trigger an -ERANGE response from the code.
Cc: Yury Norov
Cc: Rasmus Villemoes
Cc: Andy Shevchenko
Acked-by: Yury Norov
Reviewed-by: Andy
在 2021/3/4 上午12:05, Peter Zijlstra 写道:
> On Wed, Mar 03, 2021 at 04:32:18PM +0100, Peter Zijlstra wrote:
>
>> Yes, I can do that. Thanks!
> Please double check the patches as found here:
>
>
> https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/log/?h=sched/core
>
> I've manually e
Quoting Rajendra Nayak (2021-03-03 04:17:58)
> Add the DT node for the rpmhpd power controller on SC7280 SoCs.
>
> Signed-off-by: Rajendra Nayak
> ---
Reviewed-by: Stephen Boyd
From: Paul Gortmaker
This block of tests was meant to find/flag incorrect use of the ":"
and "/" separators (syntax errors) and invalid (zero) group len.
However they were specified with an 8 bit width and 32 bit operations,
so they really contained two errors (EINVAL and ERANGE).
Promote them
From: Paul Gortmaker
These are copies of existing tests, with just 31 --> N. This ensures
the recently added "N" alias transparently works in any normally
numeric fields of a region specification.
Cc: Yury Norov
Cc: Rasmus Villemoes
Cc: Andy Shevchenko
Acked-by: Yury Norov
Signed-off-by: Pa
From: "Paul E. McKenney"
This commit uses the shiny new "all" and "N" cpumask options to decouple
the "nohz_full" and "rcu_nocbs" kernel boot parameters in the TREE04.boot
and TREE08.boot files from the CONFIG_NR_CPUS options in the TREE04 and
TREE08 files.
Reported-by: Paul Gortmaker
Signed-of
From: Paul Gortmaker
With the core bitmap support now accepting "N" as a placeholder for
the end of the bitmap, "all" can be represented as "0-N" and has the
advantage of not being specific to RCU (or any other subsystem).
So deprecate the use of "all" by removing documentation references
to it.
Quoting Rajendra Nayak (2021-03-03 04:17:49)
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 4a56d9c..21c2399 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -30,6 +31,18 @@
>
Tianjia,
can you say whether SM2 support works for you before and after
applying this patch? I cannot verify it with an sm2 key I have created
using a sequence of commands like this:
> modprobe sm2_generic
> id=$(keyctl newring test @u)
> keyctl padd asymmetric "" $id < sm2.der
add_key: Ke
On Wed, Mar 3, 2021 at 5:23 PM Álvaro Fernández Rojas wrote:
> Or maybe we could guard these lines of gpio-regmap.c with #ifdef
> GPIOLIB_IRQCHIP:
> https://github.com/torvalds/linux/blob/f69d02e37a85645aa90d18cacfff36dba370f797/drivers/gpio/gpio-regmap.c#L282-L286
That's the best approach. I w
Quoting Rajendra Nayak (2021-03-03 04:17:57)
> From: Maulik Shah
>
> Add cpuidle states for little and big cpus.
Please also say "The latency values are preliminary placeholders and will be
updated
once testing provides the real numbers".
>
> Signed-off-by: Maulik Shah
> Signed-off-by: Rajen
From: Paul Gortmaker
While this is done for all bitmaps, the original use case in mind was
for CPU masks and cpulist_parse() as described below.
It seems that a common configuration is to use the 1st couple cores for
housekeeping tasks. This tends to leave the remaining ones to form a
pool of s
On Tue, Mar 2, 2021 at 4:59 AM Greentime Hu wrote:
>
> From: Paul Walmsley
>
> Add driver for the SiFive FU740 PCIe host controller.
> This controller is based on the DesignWare PCIe core.
>
> Co-developed-by: Henry Styles
> Signed-off-by: Henry Styles
> Co-developed-by: Erik Danie
> Signed-of
From: Paul Gortmaker
There are inputs to bitmap_parselist() that would probably never
be entered manually by a person, but might result from some kind of
automated input generator. Things like ranges of length 1, or group
lengths longer than nbits, overlaps, or offsets of zero.
Adding these tes
From: "Uladzislau Rezki (Sony)"
Single-argument kvfree_rcu() must be invoked from sleepable contexts,
so we can directly allocate pages. Furthermmore, the fallback in case
of page-allocation failure is the high-latency synchronize_rcu(), so it
makes sense to do these page allocations from the fa
Hi,
On 2021-03-01 at 17:12, Greg Kroah-Hartman wrote:
From: Lech Perczak
commit 6420a569504e212d618d4a4736e2c59ed80a8478 upstream.
This patch prepares for qmi_wwan driver support for the device.
Previously "option" driver mapped itself to interfaces 0 and 3 (matching
ff/ff/ff), while interfac
On 03/03, Colin Ian King wrote:
> On 03/03/2021 19:44, Jaegeuk Kim wrote:
> > On 03/02, Colin Ian King wrote:
> >> Hi,
> >>
> >> Static analysis on linux-next detected a potential uninitialized
> >> variable dn.node_changed that does not get set when a call to
> >> f2fs_get_node_page() fails. This
From: "Paul E. McKenney"
The krc_this_cpu_unlock() function does a raw_spin_unlock() immediately
followed by a local_irq_restore(). This commit saves a line of code by
merging them into a raw_spin_unlock_irqrestore(). This transformation
also reduces scheduling latency because raw_spin_unlock_i
From: "Uladzislau Rezki (Sony)"
Running an rcuscale stress-suite can lead to "Out of memory" of a
system. This can happen under high memory pressure with a small amount
of physical memory.
For example, a KVM test configuration with 64 CPUs and 512 megabytes
can result in OOM when running rcuscal
Quoting Rajendra Nayak (2021-03-03 04:17:50)
> Add rpmhcc clock controller node for SC7280. Also add references to
> rpmhcc clocks in gcc.
>
> Signed-off-by: Taniya Das
> Signed-off-by: Rajendra Nayak
> ---
Reviewed-by: Stephen Boyd
From: "Uladzislau Rezki (Sony)"
__GFP_RETRY_MAYFAIL can spend quite a bit of time reclaiming, and this
can be wasted effort given that there is a fallback code path in case
memory allocation fails.
__GFP_NORETRY does perform some light-weight reclaim, but it will fail
under OOM conditions, allow
Quoting Rajendra Nayak (2021-03-03 04:17:47)
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> new file mode 100644
> index 000..4a56d9c
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -0,0 +1,299 @@
> +// SPDX-License-Identifier:
From: "Uladzislau Rezki (Sony)"
The single-argument variant of kfree_rcu() is currently not
tested by any member of the rcutoture test suite. This
commit therefore adds rcuscale code to test it. This
testing is controlled by two new boolean module parameters,
kfree_rcu_test_single and kfree_rcu
On Thu, Mar 04, 2021 at 03:33:31AM +0900, Masahiro Yamada wrote:
> The kernel build uses various tools, many of which are provided by the
> same software suite, for example, LLVM and Binutils.
>
> When we raise the minimal version of Clang/LLVM, we need to update
> clang_min_version in scripts/cc-
From: "Paul E. McKenney"
This commit applies the __GFP_NOMEMALLOC gfp flag to memory allocations
carried out by the single-argument variant of kvfree_rcu(), thus avoiding
this can-sleep code path from dipping into the emergency reserves.
Acked-by: Michal Hocko
Suggested-by: Michal Hocko
Signed
On Wed, Mar 3, 2021 at 3:34 PM Suren Baghdasaryan wrote:
>
> On Wed, Mar 3, 2021 at 3:17 PM Shakeel Butt wrote:
> >
> > On Wed, Mar 3, 2021 at 10:58 AM Suren Baghdasaryan
> > wrote:
> > >
> > > process_madvise currently requires ptrace attach capability.
> > > PTRACE_MODE_ATTACH gives one proce
Hello!
This series contains kvfree_rcu() updates, most notably surrounding GPF
flags for memory allocation.
1. kvfree_rcu: Directly allocate page for single-argument case,
courtesy of "Uladzislau Rezki (Sony)".
2. kvfree_rcu: Use __GFP_NOMEMALLOC for single-argument kvfree_rcu(
This is useful when checking conditions during checkpoint=disable in Android.
Signed-off-by: Jaegeuk Kim
---
Documentation/ABI/testing/sysfs-fs-f2fs | 5 +
fs/f2fs/sysfs.c | 9 +
2 files changed, 14 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-f
On Wed, Mar 03, 2021 at 06:51:35PM +0100, Fabrice Gasnier wrote:
> The ARR register is cleared unconditionally upon probing, after the maximum
> value has been read. This initial condition is rather not intuitive, when
> considering the counter child driver. It rather expects the maximum value
> by
From: "Paul E. McKenney"
If there is heavy softirq activity, the softirq system will attempt
to awaken ksoftirqd and will stop the traditional back-of-interrupt
softirq processing. This is all well and good, but only if the
ksoftirqd kthreads already exist, which is not the case during early
boo
On 03/03, Stephen Rothwell wrote:
> Hi all,
>
> After merging the f2fs tree, today's linux-next build (x86_64
> allmodconfig) produced this warning:
>
> fs/f2fs/sysfs.c:576:25: warning: 'f2fs_attr_ovp_segments' defined but not
> used [-Wunused-variable]
> 576 | static struct f2fs_attr f2fs_att
Christian Brauner writes:
> Hi Linus,
> This series comes with an extensive xfstests suite covering both ext4 and xfs
> https://git.kernel.org/brauner/xfstests-dev/h/idmapped_mounts
> It covers truncation, creation, opening, xattrs, vfscaps, setid execution,
> setgid inheritance and more both wi
Foolishly I'd missed you out of the series Cc so you only got those
two patches. You should find the rest @
Subject: [RFC PATCH 0/5] RPMB internal and user-space API + WIP
virtio-rpmb frontend
Date: Wed, 3 Mar 2021 13:54:55 +
Message-Id: <20210303135500.24673-1-alex.ben...@linaro.org>
assum
On Wed, Mar 03, 2021 at 05:05:15PM +0100, Peter Zijlstra wrote:
> On Wed, Mar 03, 2021 at 04:32:18PM +0100, Peter Zijlstra wrote:
>
> > Yes, I can do that. Thanks!
>
> Please double check the patches as found here:
>
>
> https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/log/?h=
Hi, Rob:
Rob Herring 於 2021年2月24日 週三 上午5:51寫道：
>
> Update the mediatek,dpi binding to use the graph schema. Missed
> this one from the mass conversion since it's not part of drm-misc.
Applied to mediatek-drm-next [1], thanks.
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/lin
From: "Paul E. McKenney"
This commit replaces "Steve" with the his real name, which is "Stephen".
Reported-by: Stephen Hemminger
Signed-off-by: Paul E. McKenney
---
Documentation/RCU/RTFP.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/RCU/RTFP.txt b/Docu
From: Sangmoon Kim
This commit adds a trace event which allows tracing the beginnings of RCU
CPU stall warnings on systems where sysctl_panic_on_rcu_stall is disabled.
The first parameter is the name of RCU flavor like other trace events.
The second parameter indicates whether this is a stall of
From: "Paul E. McKenney"
After interrupts have enabled at boot but before some random point
in early_initcall() processing, softirq processing is unreliable.
If softirq sees a need to push softirq-handler invocation to ksoftirqd
during this time, then those handlers can be delayed until the ksoft
From: "Paul E. McKenney"
Because preemptible RCU's __rcu_read_unlock() is an external function,
the rough equivalent of an implicit barrier() is inserted by the compiler.
Except that there is a direct call to __rcu_read_unlock() in that same
file, and compilers are getting to the point where they
On Tue, Mar 02, 2021 at 10:49:43PM -0800, Joe Perches wrote:
> On Sun, 2021-02-21 at 12:43 -0800, Moritz Fischer wrote:
> > On Wed, Feb 17, 2021 at 10:40:01PM -0800, Lizhi Hou wrote:
> > > This is V3 of patch series which adds management physical function driver
> > > for Xilinx
> > > Alveo PCIe a
On Wed, Mar 03, 2021 at 06:49:49PM +0100, Fabrice Gasnier wrote:
> Ceiling value may be miss-aligned with what's actually configured into the
> ARR register. This is seen after probe as currently the ARR value is zero,
> whereas ceiling value is set to the maximum. So:
> - reading ceiling reports z
On Wed, Mar 3, 2021 at 3:17 PM Shakeel Butt wrote:
>
> On Wed, Mar 3, 2021 at 10:58 AM Suren Baghdasaryan wrote:
> >
> > process_madvise currently requires ptrace attach capability.
> > PTRACE_MODE_ATTACH gives one process complete control over another
> > process. It effectively removes the secu
On Tue, 02 Mar 2021 18:59:15 +0800, Greentime Hu wrote:
> Add PCIe host controller DT bindings of SiFive FU740.
>
> Signed-off-by: Greentime Hu
> ---
> .../bindings/pci/sifive,fu740-pcie.yaml | 119 ++
> 1 file changed, 119 insertions(+)
> create mode 100644
> Documentati
On Wed, Mar 3, 2021 at 10:58 AM Suren Baghdasaryan wrote:
>
> process_madvise currently requires ptrace attach capability.
> PTRACE_MODE_ATTACH gives one process complete control over another
> process. It effectively removes the security boundary between the
> two processes (in one direction). Gr
On Fri, 26 Feb 2021 02:25:37 +0100 Andrey Konovalov
wrote:
> Currently, kasan_free_nondeferred_pages()->kasan_free_pages() is called
> after debug_pagealloc_unmap_pages(). This causes a crash when
> debug_pagealloc is enabled, as HW_TAGS KASAN can't set tags on an
> unmapped page.
>
> This patc
Hello!
This series adds ranges to bitmaps, and thus to CPU numbers, so that a
kernel boot parameter such as "rcu_nocbs=2-N" is now permitted.
1. test_bitmap: clearly separate ERANGE from EINVAL tests, courtesy
of Paul Gortmaker.
2. test_bitmap: add tests to trigger ERANGE case,
From: Mauro Carvalho Chehab
After commit 5130b8fd0690 ("rcu: Introduce kfree_rcu() single-argument macro"),
kernel-doc now emits two warnings:
./include/linux/rcupdate.h:884: warning: Excess function parameter
'ptr' description in 'kfree_rcu'
./include/linux/rcupdate.h:884: warn
From: Neeraj Upadhyay
The condition in the trace_rcu_grace_period() in rcutree_dying_cpu() is
backwards, so that it uses the string "cpuofl" when the offline CPU is
blocking the current grace period and "cpuofl-bgp" otherwise. Given that
the "-bgp" stands for "blocking grace period", this is at
From: Zhouyi Zhou
In rcu_nmi_enter(), there is an erroneous instrumentation_end() in the
second branch of the "if" statement. Oddly enough, "objtool check -f
vmlinux.o" fails to complain because it is unable to correctly cover
all cases. Instead, objtool visits the third branch first, which mar
From: Frederic Weisbecker
Cc: Rafael J. Wysocki
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Ingo Molnar
Signed-off-by: Frederic Weisbecker
Signed-off-by: Paul E. McKenney
---
kernel/rcu/tree.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index da6f
From: Akira Yokosawa
The hlist_nulls_for_each_entry_rcu() docbook header references the
atomic_ops.rst file, which was removed in commit f0400a77ebdc ("atomic:
Delete obsolete documentation"). This commit therefore substitutes a
section in memory-barriers.txt discussing the use of barrier() in l
> On Mar 3, 2021, at 11:03 AM, Peter Xu wrote:
>
> On Wed, Mar 03, 2021 at 01:57:02AM -0800, Nadav Amit wrote:
>> From: Nadav Amit
>>
>> Userfaultfd self-test fails occasionally, indicating a memory
>> corruption.
>
> It's failing very constantly now for me after I got it run on a 40 cores
>
> +EXPORT_SYMBOL_GPL(hv_setup_crash_handler);
> +
> +void hv_remove_crash_handler(void)
> +{
> +}
> +EXPORT_SYMBOL_GPL(hv_remove_crash_handler);
> --
> 1.8.3.1
Reviewed-by: Sunil Muthuswamy
Hi Nava,
On Thu, Jan 21, 2021 at 09:17:10PM -0800, Moritz Fischer wrote:
> On Mon, Jan 18, 2021 at 08:20:57AM +0530, Nava kishore Manne wrote:
> > This commit adds secure flags to the framework to support
> > secure BitStream Loading.
> >
> > Signed-off-by: Nava kishore Manne
> > ---
> > driver
Hello!
This series contains miscellaneous fixes:
1. Remove superfluous rdp fetch, courtesy of Frederic Weisbecker.
2. Fix CPU-offline trace in rcutree_dying_cpu, courtesy of Neeraj
Upadhyay.
3. Remove spurious instrumentation_end() in rcu_nmi_enter(),
courtesy of
Hi Heiko,
On Wed, Mar 3, 2021 at 6:11 PM Heiko Thiery wrote:
>
> The Kontron pitx-imx8m board is based on an i.MX8MQ soc.
>
> Signed-off-by: Heiko Thiery
> Reviewed-by: Krzysztof Kozlowski
> Reviewed-by: Michael Walle
Reviewed-by: Fabio Estevam
On Wed, Mar 03, 2021 at 03:22:46PM -0500, Alan Stern wrote:
> On Wed, Mar 03, 2021 at 09:40:22AM -0800, Paul E. McKenney wrote:
> > On Wed, Mar 03, 2021 at 12:12:21PM -0500, Alan Stern wrote:
>
> > > Local variables absolutely should be treated just like CPU registers, if
> > > possible. In fact
On Wed, Mar 03, 2021 at 07:04:33PM +, Catalin Marinas wrote:
> On Thu, Feb 11, 2021 at 01:35:56PM +0100, David Hildenbrand wrote:
> > On 11.02.21 13:10, Anshuman Khandual wrote:
> > > On 2/11/21 5:23 PM, Will Deacon wrote:
> > > > ... and dropped. These patches appear to be responsible for a bo
Hello Alex,
Thanks for the patch.
On Fri, 26 Feb 2021 at 07:06, Alexandre Courbot wrote:
>
> From: Yunfei Dong
>
> Support the stateless codec API that will be used by MT8183.
>
> Signed-off-by: Yunfei Dong
> [acourbot: refactor, cleanup and split]
> Co-developed-by: Alexandre Courbot
> Signe
On Wed, Mar 03, 2021 at 11:57:33AM -0800, Linus Torvalds wrote:
> End result: gcc plugins are pure garbage, and you should shun them. If
I think that's pretty harsh, but okay, opinions are opinions. As Josh
says, people are interested in them for not-uncommon real-world uses:
- stackleak has data
Hi Alex,
Thanks for the patch.
On Fri, 26 Feb 2021 at 07:06, Alexandre Courbot wrote:
>
> From: Yunfei Dong
>
> Add support for H.264 decoding using the stateless API, as supported by
> MT8183. This support takes advantage of the V4L2 H.264 reference list
> builders.
>
> Signed-off-by: Yunfei
On Wed, Mar 3, 2021 at 2:02 AM Peter Zijlstra wrote:
>
> On Tue, Mar 02, 2021 at 12:57:37PM -0800, Josh Don wrote:
> > On gcc, the asm versions of `fls` are about the same speed as the
> > builtin. On clang, the versions that use fls (fls,fls64) are more than
> > twice as slow as the builtin. This
On 11:43 Mon 01 Mar 2021, Geert Uytterhoeven wrote:
If I saw correctly , the tag clearly attached a word with it "dontuse" ...
~Bhaskar
Below is the list of build error/warning regressions/improvements in
v5.12-rc1[1] compared to v5.11[2].
Summarized:
- build errors: +2/-0
- build warnings
Hi,
On 2021-03-01 at 17:12, Greg Kroah-Hartman wrote:
From: Lech Perczak
commit 6420a569504e212d618d4a4736e2c59ed80a8478 upstream.
This patch prepares for qmi_wwan driver support for the device.
Previously "option" driver mapped itself to interfaces 0 and 3 (matching
ff/ff/ff), while interfac
On Thu, Feb 25, 2021 at 02:02:06PM +, Will Deacon wrote:
> On Thu, Feb 25, 2021 at 05:56:59AM -0800, Yury Norov wrote:
> > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> > index 31bd885b79eb..5596eab04092 100644
> > --- a/arch/arm64/Kconfig
> > +++ b/arch/arm64/Kconfig
> > @@ -108,6 +10
On 03/03/2021 21:29, Heiko Thiery wrote:
> Hi all,
>
>> On Wed, Mar 3, 2021 at 6:00 PM Colin King wrote:
>>>
>>> From: Colin Ian King
>>>
>>> Currently the null check logic on dwc->usb_psy is inverted as it allows
>>> calls to power_supply_put with a null dwc->usb_psy causing a null
>>> pointer
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: f69d02e37a85645aa90d18cacfff36dba370f797
commit: 61e0349f703d1576a12f88c15f25e0a56fd277af ubsan: disable object-size
sanitizer under GCC
date: 3 months ago
config: s390-allmodconfig (attached as .config)
c
On 2021-03-03, Masahiro Yamada wrote:
Hi.
On Wed, Mar 3, 2021 at 6:44 AM Fangrui Song wrote:
Reviewed-by: Fangrui Song
Thanks for the clean-up!
--gcc-toolchain= is an obsscure way searching for GCC installation prefixes
(--prefix).
The logic is complex and different for different distrib
On Wed, 3 Mar 2021 19:38:30 +0100 Borislav Petkov wrote:
> On Tue, Mar 02, 2021 at 04:09:35PM -0800, Andrew Morton wrote:
> > > arch/x86/mm/init_64.c | 189
> > > +++---
> >
> > Perhaps a better route would be via an x86 tree.
>
> I assumed you took
From: Clement Courbet
A significant portion of __calc_delta time is spent in the loop
shifting a u64 by 32 bits. Use `fls` instead of iterating.
This is ~7x faster on benchmarks.
The generic `fls` implementation (`generic_fls`) is still ~4x faster
than the loop.
Architectures that have a better
Hi Jagan,
On Wed, Mar 03, 2021 at 08:08:35PM +0530, Jagan Teki wrote:
> On Wed, Feb 24, 2021 at 6:44 PM Laurent Pinchart wrote:
> > On Wed, Feb 24, 2021 at 06:07:43PM +0530, Jagan Teki wrote:
> > > On Mon, Feb 15, 2021 at 5:48 PM Laurent Pinchart wrote:
> > > > On Sun, Feb 14, 2021 at 11:22:10PM +
On Sun, Feb 21, 2021 at 12:25:53AM +, Sergei Trofimovich wrote:
> In https://bugs.gentoo.org/769614 Dmitry noticed that
> `ptrace(PTRACE_GET_SYSCALL_INFO)` does not work for syscalls called
> via glibc's syscall() wrapper.
>
> ia64 has two ways to call syscalls from userspace: via `break` and
On 03/03/2021 19:44, Jaegeuk Kim wrote:
> On 03/02, Colin Ian King wrote:
>> Hi,
>>
>> Static analysis on linux-next detected a potential uninitialized
>> variable dn.node_changed that does not get set when a call to
>> f2fs_get_node_page() fails. This uninitialized value gets used in the
>> call
On Wed, Mar 3, 2021 at 11:20 AM Paul Moore wrote:
> On Wed, Mar 3, 2021 at 10:53 AM syzbot
> wrote:
> >
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit:7a7fd0de Merge branch 'kmap-conversion-for-5.12' of git://..
> > git tree: upstream
> > console output: htt
On Wed, Mar 03, 2021 at 16:50:49 +0100, Matthias Schiffer wrote:
> Commit 5ee759cda51b ("l2tp: use standard API for warning log messages")
> changed a number of warnings about invalid packets in the receive path
> so that they are always shown, instead of only when a special L2TP debug
> flag is s
On Wed, 3 Mar 2021 12:50:53 -0800 Minchan Kim wrote:
> Since CMA is getting used more widely, it's more important to
> keep monitoring CMA statistics for system health since it's
> directly related to user experience.
>
> This patch introduces sysfs statistics for CMA, in order to provide
> som
#syz test: git://git.kernel.dk/linux-block leak
--
Jens Axboe
From: Tom Lendacky
If SEV has been disabled (e.g. through BIOS), the driver probe will still
issue SEV firmware commands. The SEV INIT firmware command will return an
error in this situation, but the error code is a general error code that
doesn't highlight the exact reason.
Add a check for X86_
allyesconfig
mips allmodconfig
powerpc allyesconfig
powerpc allmodconfig
powerpc allnoconfig
i386 randconfig-a005-20210303
i386 randconfig-a003-20210303
i386
On Wed, Mar 3, 2021 at 7:50 AM Will Deacon wrote:
>
> The built-in kernel commandline (CONFIG_CMDLINE) can be configured in
> three different ways:
>
> 1. CMDLINE_FORCE: Use CONFIG_CMDLINE instead of any bootloader args
> 2. CMDLINE_EXTEND: Append the bootloader args to CONFIG_CMDLINE
> 3. C
If the I/O completed successfully, the page will remain Uptodate,
even if it is subsequently truncated. If the I/O completed with an error,
this check would cause us to retry the I/O if the page were truncated
before we woke up. There is no need to retry the I/O; the I/O to fill
the page failed,
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an
issue:
memory leak in io_submit_sqes
BUG: memory leak
unreferenced object 0x88811043cc00 (size 232):
comm "syz-executor.0", pid 10595, jiffies 4294944973 (age 10.850s)
hex dump (first 32 bytes):
00
On Wed, 2021-03-03 at 12:39 +0100, Benjamin Gaignard wrote:
> Change hantro_codec_ops run prototype from 'void' to 'int'.
> This allow to cancel the job if an error occur while configuring
> the hardware.
>
> Signed-off-by: Benjamin Gaignard
> ---
> drivers/staging/media/hantro/hantro_drv.c
Hi all,
Today's linux-next merge of the ipsec tree got conflicts in:
net/ipv4/ip_vti.c
net/ipv6/ip6_vti.c
between commit:
4372339efc06 ("net: always use icmp{,v6}_ndo_send from ndo_start_xmit")
from the net tree and commits:
c7c1abfd6d42 ("vti: fix ipv4 pmtu check to honor ip header d
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