On Mon, Oct 21, 2024 at 08:30:43PM -0700, Paul E. McKenney wrote:
> Thoughts?
Thanks Paul!
Acked-by: Peter Zijlstra (Intel)
>
>
> commit 4433b7d3785d8d2a700f5ed5ca234c64bc63180e
> Author: Paul E. McKenney
> Date: Mon O
On Mon, Oct 21, 2024 at 11:51:40PM -0700, Christoph Hellwig wrote:
> On Mon, Oct 21, 2024 at 03:13:05PM -0700, Paul E. McKenney wrote:
> > For almost 20 years, the int return value from srcu_read_lock() has
> > been always either zero or one. This commit therefore documents the
> > fact that it wi
On Tue, Oct 22, 2024 at 09:06:35AM +0200, Peter Zijlstra wrote:
> What is returned is an array index -- and SRCU is currently built using
> an array of size 2. Using larger arrays is conceivable (IIRC some
> versions of preemptible RCU used up to 4 or something).
>
> So while the values 0,1 are po
On Tue, Oct 22, 2024 at 12:07:35AM -0700, Christoph Hellwig wrote:
> On Tue, Oct 22, 2024 at 09:06:35AM +0200, Peter Zijlstra wrote:
> > What is returned is an array index -- and SRCU is currently built using
> > an array of size 2. Using larger arrays is conceivable (IIRC some
> > versions of pree
> On Oct 17, 2024, at 5:55 PM, Stanislav Fomichev wrote:
>
> On 10/18, Anjali Kulkarni wrote:
>>
>>
>>> On Oct 17, 2024, at 5:13 PM, Stanislav Fomichev
>>> wrote:
>>>
>>> On 10/17, Anjali Kulkarni wrote:
Kunit tests to test hash table add, delete, duplicate add and delete.
Add fo
Le Tue, Oct 22, 2024 at 05:34:21PM +0200, Sebastian Andrzej Siewior a écrit :
> On 2024-10-22 15:28:56 [+0200], Frederic Weisbecker wrote:
> > > Once the ksoftirqd is marked as pending (or is running) it will collect
> > > all raised softirqs. This in turn means that a softirq which would have
> >
On Tue, Oct 22, 2024, Adrian Hunter wrote:
> On 22/10/24 19:30, Sean Christopherson wrote:
> >>> LOL, yeah, this needs to be burned with fire. It's wildly broken. So
> >>> for stable@,
> >>
> >> It doesn't seem wildly broken. Just the VMM passing invalid CPUID
> >> and KVM not validating it.
>
Running "make kselftest TARGETS=intel_pstate" results in
the following errors:
- ./run.sh: line 90: / 1000: syntax error: operand expected
(error token is "/ 1000")
- ./run.sh: line 92: / 1000: syntax error: operand expected
(error token is "/ 1000")
This fix allows to have cross-platform compatib
On 22/10/24 19:30, Sean Christopherson wrote:
> On Tue, Oct 22, 2024, Adrian Hunter wrote:
>> On 14/10/24 21:25, Sean Christopherson wrote:
Fixes: 2ef444f1600b ("KVM: x86: Add Intel PT context switch for each vcpu")
Cc: sta...@vger.kernel.org
>>>
>>> This is way, way too big for stable@.
On Thu, Oct 17, 2024 at 5:34 PM Stanislav Kinsburskii
wrote:
>
> The new option controls tests run on boot or module load. With the new
> debugfs "run" dentry allowing to run tests on demand, an ability to disable
> automatic tests run becomes a useful option in case of intrusive tests.
>
> The op
Currently if we encounter an error between fork() and exec() of a child
process we log the error to stderr. This means that the errors don't get
annotated with the child information which makes diagnostics harder and
means that if we miss the exit signal from the child we can deadlock
waiting for o
>
> Out of curiosity, how much is Intel PT used purely for control flow tracing,
> i.e.
> without caring _at all_ about perceived execution time?
It is very common, e.g. one major use of PT is control flow discovery in
feedback fuzzers.
-Andi
On 10/22, Anjali Kulkarni wrote:
>
>
> > On Oct 17, 2024, at 5:55 PM, Stanislav Fomichev
> > wrote:
> >
> > On 10/18, Anjali Kulkarni wrote:
> >>
> >>
> >>> On Oct 17, 2024, at 5:13 PM, Stanislav Fomichev
> >>> wrote:
> >>>
> >>> On 10/17, Anjali Kulkarni wrote:
> Kunit tests to test
On Thu, Oct 17, 2024 at 10:05:49PM GMT, Lorenzo Stoakes wrote:
> The means by which a pid is determined from a pidfd is duplicated, with
> some callers holding a reference to the (pid)fd, and others explicitly
> pinning the pid.
>
> Introduce __pidfd_get_pid() which narrows this to one approach of
On Thu, Oct 10, 2024 at 06:36:09PM +0200, Frederic Weisbecker wrote:
> After a CPU has set itself offline and before it eventually calls
> rcutree_report_cpu_dead(), there are still opportunities for callbacks
> to be enqueued, for example from a softirq. When that happens on NOCB,
> the rcuog wake
On Tue, Oct 22, 2024 at 7:26 AM Paul E. McKenney wrote:
>
> On Tue, Oct 22, 2024 at 12:13:12AM -0700, Christoph Hellwig wrote:
> > On Tue, Oct 22, 2024 at 09:10:18AM +0200, Peter Zijlstra wrote:
> > > Ah, well, the thing that got us here is that we (Andrii and me) wanted
> > > to use -1 as an 'inv
Correct the typo errors in json files
- "diffferent" is corrected to "different".
- "muliple" and "miltiple" is corrected to "multiple".
Reviewed-by: Simon Horman
Reviewed-by: Shuah Khan
Signed-off-by: Karan Sanghavi
---
Changes in v2:
- Rewrote short log and commit message
- Link to v1:
http
On Thu, Oct 17, 2024 at 10:05:50PM GMT, Lorenzo Stoakes wrote:
> It is useful to be able to utilise the pidfd mechanism to reference the
> current thread or process (from a userland point of view - thread group
> leader from the kernel's point of view).
>
> Therefore introduce PIDFD_SELF_THREAD to
On Tue, Oct 22, 2024 at 04:17:12AM +, Bjorn Andersson wrote:
> Some versions of the pmic_glink firmware does not allow dynamic GLINK
> intent allocations, attempting to send a message before the firmware has
> allocated its receive buffers and announced these intent allocations
> will fail. Whe
On 20/10/2024 20:22:13-0700, Joseph Jang wrote:
> In alarm_wkalm_set and alarm_wkalm_set_minute test, they use different
> ioctl (RTC_ALM_SET/RTC_WKALM_SET) for alarm feature detection. They will
> skip testing if RTC_ALM_SET/RTC_WKALM_SET ioctl returns an EINVAL error
> code. This design may miss
Hi Zheng,
We Cc kunit folks for any DAMON kunit test changes, so I Cc-ed them.
On Tue, 22 Oct 2024 16:39:26 +0800 Zheng Yejian
wrote:
> According to the logic of damon_va_evenly_split_region(), currently
> following split case would not meet the expectation:
>
> Suppose DAMON_MIN_REGION=0x
Hi Zheng,
Cc-ed kunit folks, as we usually do for DAMON kunit test changes.
On Tue, 22 Oct 2024 16:39:27 +0800 Zheng Yejian
wrote:
> As discussed in [1], damon_va_evenly_split_region() is called to
> size-evenly split a region into 'nr_pieces' small regions,
> when nr_pieces == 1, no actual s
On Tue, Oct 22, 2024, Adrian Hunter wrote:
> On 14/10/24 21:25, Sean Christopherson wrote:
> >> Fixes: 2ef444f1600b ("KVM: x86: Add Intel PT context switch for each vcpu")
> >> Cc: sta...@vger.kernel.org
> >
> > This is way, way too big for stable@. Given that host/guest mode is
> > disabled by
Hi Johannes,
On Tue, 22 Oct 2024 at 19:36, Johannes Weiner wrote:
>
> On Tue, Oct 22, 2024 at 05:51:58PM +0530, Pintu Kumar wrote:
> > There is a psi module that exists under kernel/sched/psi.
> > Add a basic test to test the psi.
>
> I'm not sure this is a valuable use of test cycles. The mere e
On 2024-10-22 15:28:56 [+0200], Frederic Weisbecker wrote:
> Le Fri, Oct 04, 2024 at 12:17:04PM +0200, Sebastian Andrzej Siewior a écrit :
> > A timer/ hrtimer softirq is raised in-IRQ context. With threaded
> > interrupts enabled or on PREEMPT_RT this leads to waking the ksoftirqd
> > for the proc
On Wed, Oct 09, 2024 at 10:01:08AM +0200, Arnaud Pouliquen wrote:
> The new TEE remoteproc driver is used to manage remote firmware in a
> secure, trusted context. The 'st,stm32mp1-m4-tee' compatibility is
> introduced to delegate the loading of the firmware to the trusted
> execution context. In s
On Thu 2024-10-17 22:01:29, Michael Vetter wrote:
> Thanks for all the reviews.
>
> V5:
> Replace /sys/kernel/livepatch also in other/already existing tests.
> Improve commit message of 3rd patch.
JFYI, I have committed the patchset into livepatching.git,
branch for-6.13/selftests-kprobe.
I have
On Tue, Oct 22, 2024 at 04:17:11AM +, Bjorn Andersson wrote:
> The initial implementation of request intent response handling dealt
> with two outcomes; granted allocations, and all other cases being
> considered -ECANCELLED (likely from "cancelling the operation as the
> remote is going down")
On 14/10/24 21:25, Sean Christopherson wrote:
> On Mon, Oct 14, 2024, Adrian Hunter wrote:
>> Ensure Intel PT tracing is disabled before VM-Entry in Intel PT Host/Guest
>> mode.
>>
>> Intel PT has 2 modes for tracing virtual machines. The default is System
>> mode whereby host and guest output to t
On Thu, 17 Oct 2024 18:43:31 +0100, Mark Brown wrote:
> Currently fp-stress does not report a top level test result if it runs to
> completion, it always exits with a return code 0. Use the ksft_finished()
> helper to ensure that the exit code for the top level program reports a
> failure if any of
On 10/8/24 20:38, Sami Tolvanen wrote:
> Basic types in DWARF repeat frequently and traversing the DIEs using
> libdw is relatively slow. Add a simple hashtable based cache for the
> processed DIEs.
>
> Signed-off-by: Sami Tolvanen
> Acked-by: Neal Gompa
Looks ok to me, free free to add:
Revie
On 10/16/24 23:50, Mohan Prasad J wrote:
> Add selftest file for the link layer tests of a NIC driver.
> Test for auto-negotiation is added.
> Add LinkConfig class for changing link layer configs.
> Selftest makes use of ksft modules and ethtool.
> Include selftest file in the Makefile.
>
> Signed
Got it, thanks.
Regards
Bibo Mao
On 2024/10/22 下午5:45, Huacai Chen wrote:
On Tue, Oct 22, 2024 at 5:17 PM maobibo wrote:
Hi Huacai/Thomas,
Sorry for the ping message :(
Can this patch be applied int next RC version?
Queued for the next release.
Huacai
Regards
Bibo Mao
On 2024/10/2
On 10/16/24 23:50, Mohan Prasad J wrote:
> Add selftest case to check the send and receive throughput.
> Supported link modes between local NIC driver and partner
> are varied. Then send and receive throughput is captured
> and verified. Test uses iperf3 tool.
>
> Signed-off-by: Mohan Prasad J
>
On Tue, Oct 22, 2024 at 5:17 PM maobibo wrote:
>
> Hi Huacai/Thomas,
>
> Sorry for the ping message :(
>
> Can this patch be applied int next RC version?
Queued for the next release.
Huacai
>
> Regards
> Bibo Mao
>
> On 2024/10/2 下午9:42, Thomas Gleixner wrote:
> > On Wed, Sep 11 2024 at 17:11, H
KCSAN reports a data race when access the krcp->monitor_work.timer.expires
variable in the schedule_delayed_monitor_work() function:
BUG: KCSAN: data-race in __mod_timer / kvfree_call_rcu
read to 0x888237d1cce8 of 8 bytes by task 10149 on cpu 1:
schedule_delayed_monitor_work kernel/rcu/tree
Le Fri, Oct 04, 2024 at 12:17:04PM +0200, Sebastian Andrzej Siewior a écrit :
> A timer/ hrtimer softirq is raised in-IRQ context. With threaded
> interrupts enabled or on PREEMPT_RT this leads to waking the ksoftirqd
> for the processing of the softirq.
It took me some time to understand the actu
On 2024/10/22 21:15, Jason Gunthorpe wrote:
On Tue, Oct 22, 2024 at 04:59:07PM +0800, Baolu Lu wrote:
Is it feasible to make vIOMMU object more generic, rather than strictly
tying it to nested translation? For example, a normal paging domain that
translates gPAs to hPAs could also have a vIOMMU
Adds a new format for MODVERSIONS which stores each field in a separate
ELF section. This initially adds support for variable length names, but
could later be used to add additional fields to MODVERSIONS in a
backwards compatible way if needed. Any new fields will be ignored by
old user tooling, un
Generate both the existing modversions format and the new extended one
when running modpost. Presence of this metadata in the final .ko is
guarded by CONFIG_EXTENDED_MODVERSIONS.
We no longer generate an error on long symbols in modpost if
CONFIG_EXTENDED_MODVERSIONS is set, as they can now be app
From: Sami Tolvanen
Previously, two things stopped Rust from using MODVERSIONS:
1. Rust symbols are occasionally too long to be represented in the
original versions table
2. Rust types cannot be properly hashed by the existing genksyms
approach because:
* Looking up type definitions
On Tue, Oct 22, 2024 at 5:07 AM Helge Deller wrote:
>
> On 10/21/24 21:22, Luis Chamberlain wrote:
> > On Fri, Feb 02, 2024 at 10:23:21AM -0800, Luis Chamberlain wrote:
> >> On Sat, Feb 03, 2024 at 12:20:38AM +0900, Masahiro Yamada wrote:
> >>> On Fri, Feb 2, 2024 at 3:05 AM Luis Chamberlain wrot
On 2024-10-23 00:27:34 [+0200], Frederic Weisbecker wrote:
> > Try again without the "ksoftirqd will collect it all" since this won't
> > happen since the revert I mentioned.
>
> I still don't get it, this makes:
>
> """
> Once the ksoftirqd is marked as pending (or is running), a softirq which
>
On Tue, Oct 22, 2024 at 10:29:13AM -0700, Andrii Nakryiko wrote:
> >
> > Would this work?
> >
> > #define SRCU_INVALID_INDEX -1
> >
>
> But why?
Becaue it very clearly documents what is going on.
>It's a nice property to have an int-returning API where valid
> values are only >= 0, so callers ar
> On Oct 22, 2024, at 4:50 PM, Stanislav Fomichev wrote:
>
> On 10/22, Anjali Kulkarni wrote:
>>
>>
>>> On Oct 17, 2024, at 5:55 PM, Stanislav Fomichev
>>> wrote:
>>>
>>> On 10/18, Anjali Kulkarni wrote:
> On Oct 17, 2024, at 5:13 PM, Stanislav Fomichev
> wrote:
>
[…snip…]
Yes, make sure all required options are picked up by
"./tools/testing/kunit/kunit.py run" instead of manually adding options
and doing modprobe.
>>>
>>> The environment issues are resolved and I am able to run kunit.py, but my
>>> tests
>>> are not invoked without g
On Tue, Oct 22, 2024 at 6:07 PM syzbot
wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:3d5ad2d4eca3 Merge tag 'bpf-fixes' of git://git.kernel.org..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=154b748798
> kernel config:
/modpost.c | 65 +++--
9 files changed, 266 insertions(+), 17 deletions(-)
---
base-commit: 2295cf87ed5a6da4564034e4f8ebcce0a0a021ed
change-id: 20241022-extended-modversions-a7b44dfbfff1
prerequisite-message-id: <20241008183823.36676-21-samitolva...@googl
> On Oct 11, 2024, at 23:11, Wardenjohn wrote:
>
> Add selftest test cases to sysfs attribute 'stack_order'.
>
> Signed-off-by: Wardenjohn
> ---
> .../testing/selftests/livepatch/test-sysfs.sh | 74 +++
> 1 file changed, 74 insertions(+)
>
> diff --git a/tools/testing/selftes
On Tue, Oct 22, 2024 at 04:21:03AM +, Bjorn Andersson wrote:
> The remoteproc "name" property is supposed to present the "human
> readable" name of the remoteproc, while using the device name is
> readable, it's not "friendly".
>
> Instead, use the "sysmon_name" as the identifier for the remot
Hello,
syzbot found the following issue on:
HEAD commit:3d5ad2d4eca3 Merge tag 'bpf-fixes' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=154b748798
kernel config: https://syzkaller.appspot.com/x/.config?x=fd83253b74c9c570
das
On Tue, Oct 22, 2024 at 04:59:07PM +0800, Baolu Lu wrote:
> Is it feasible to make vIOMMU object more generic, rather than strictly
> tying it to nested translation? For example, a normal paging domain that
> translates gPAs to hPAs could also have a vIOMMU object associated with
> it.
>
> While
There is a psi module that exists under kernel/sched/psi.
Add a basic test to test the psi.
This test just add the basic support to check cpu/memory/io interface.
Further test will be added on top of this.
Signed-off-by: Pintu Kumar
---
MAINTAINERS | 2 +
tools/test
Hi,
On Thu, 17 Oct 2024, Michael Vetter wrote:
> Save the state of /sys/kernel/debug/kprobes/enabled
> during setup_config() and restore it during cleanup().
>
> This is in preparation for a future commit that will add a test
> that should confirm that we cannot livepatch a kprobed function
> if
On Thu, 17 Oct 2024, Michael Vetter wrote:
> The test proves that a function that is being kprobed and uses a
> post_handler cannot be livepatched.
>
> Only one ftrace_ops with FTRACE_OPS_FL_IPMODIFY set may be registered
> to any given function at a time.
>
> Note that the conflicting kprobe co
Mark Brown writes:
> Commit 9a400068a158 ("KVM: selftests: x86: Avoid using SSE/AVX
> instructions") unconditionally added -march=x86-64-v2 to the CFLAGS used
> to build the KVM selftests which does not work on non-x86 architectures:
>
> cc1: error: unknown value ‘x86-64-v2’ for ‘-march’
>
> Fi
On Tue, Oct 22, 2024 at 05:51:58PM +0530, Pintu Kumar wrote:
> There is a psi module that exists under kernel/sched/psi.
> Add a basic test to test the psi.
I'm not sure this is a valuable use of test cycles. The mere existence
and basic format of the files is very unlikely to be buggy, and such a
Le Tue, Oct 22, 2024 at 11:41:17AM +0800, Zqiang a écrit :
> Currently, running rcutorture test with torture_type=rcu fwd_progress=8
> n_barrier_cbs=8 nocbs_nthreads=8 nocbs_toggle=100 onoff_interval=60
> test_boost=2, will trigger the following warning:
>
> WARNING: CPU: 19 PID: 100 at kernel/rcu
On Tue, Oct 22, 2024 at 12:13:12AM -0700, Christoph Hellwig wrote:
> On Tue, Oct 22, 2024 at 09:10:18AM +0200, Peter Zijlstra wrote:
> > Ah, well, the thing that got us here is that we (Andrii and me) wanted
> > to use -1 as an 'invalid' value to indicate SRCU is not currently in
> > use.
> >
> >
On Tue, Oct 22, 2024 at 09:07:17AM +0200, Peter Zijlstra wrote:
> On Mon, Oct 21, 2024 at 08:30:43PM -0700, Paul E. McKenney wrote:
> > Thoughts?
>
> Thanks Paul!
>
> Acked-by: Peter Zijlstra (Intel)
Thank you, Peter! I will apply this on my next rebase.
On 10/8/24 20:38, Sami Tolvanen wrote:
> Distributions that want to maintain a stable kABI need the ability
> to make ABI compatible changes to kernel without affecting symbol
> versions, either because of LTS updates or backports.
>
> With genksyms, developers would typically hide these changes f
On 2024/10/22 12:40, Nicolin Chen wrote:
On Tue, Oct 22, 2024 at 10:28:30AM +0800, Baolu Lu wrote:
On 2024/10/22 8:19, Nicolin Chen wrote:
+ * @viommu_alloc: Allocate an iommufd_viommu on a physical IOMMU instance
behind
+ *the @dev, as the set of virtualization resources
shar
On Thu 2024-10-17 22:01:29, Michael Vetter wrote:
> Thanks for all the reviews.
>
> V5:
> Replace /sys/kernel/livepatch also in other/already existing tests.
> Improve commit message of 3rd patch.
With the syntax error fixed by Joe:
Reviewed-by: Petr Mladek
Tested-by: Petr Mladek
Note: I coul
On 10/8/24 20:38, Sami Tolvanen wrote:
> Recursively expand DWARF structure types, i.e. structs, unions, and
> enums. Also include relevant DWARF attributes in type strings to
> encode structure layout, for example.
>
> Example output with --dump-dies:
>
> subprogram (
> formal_parameter st
On 10/8/24 20:38, Sami Tolvanen wrote:
> Calculate symbol versions from the fully expanded type strings in
> type_map, and output the versions in a genksyms-compatible format.
>
> Signed-off-by: Sami Tolvanen
> Acked-by: Neal Gompa
> ---
> scripts/gendwarfksyms/dwarf.c | 25 +-
> s
Hi Huacai/Thomas,
Sorry for the ping message :(
Can this patch be applied int next RC version?
Regards
Bibo Mao
On 2024/10/2 下午9:42, Thomas Gleixner wrote:
On Wed, Sep 11 2024 at 17:11, Huacai Chen wrote:
Hi, Thomas,
On Fri, Aug 30, 2024 at 5:32 PM Bibo Mao wrote:
Interrupts can be route
On Tue, Oct 22, 2024 at 09:10:18AM +0200, Peter Zijlstra wrote:
> Ah, well, the thing that got us here is that we (Andrii and me) wanted
> to use -1 as an 'invalid' value to indicate SRCU is not currently in
> use.
>
> So it all being int is really rather convenient :-)
Then please document that
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