On Mon, Mar 31, 2025 at 12:54 AM Miroslav Lichvar wrote:
> On Thu, Mar 27, 2025 at 06:32:27PM +0100, Thomas Gleixner wrote:
> > On Thu, Mar 27 2025 at 16:42, Miroslav Lichvar wrote:
> > > On Thu, Mar 27, 2025 at 10:22:31AM +0100, Thomas Gleixner wrote:
> > > To clearly see the difference with the
when we attach a prog without cgroup_storage map being used,
cgroup_storage in struct bpf_prog_array_item is empty. Then, if we use
BPF_LINK_UPDATE to replace old prog with a new one that uses the
cgroup_storage map, we miss cgroup_storage being initiated.
This cause a painc when accessing stroage
The selftest I provided can reproduce a panic:
'./test_progs -a cgroup_storage_update'
When we attach a program to cgroup and if prog->aux->cgroup_storage
exists, which means the cgroup_storage map is used in the program, we
will then allocate storage by bpf_cgroup_storages_alloc() and assign it
t
Extend NetNSEnter to allow custom paths in order to support, for
example, /proc/self/ns/net.
Signed-off-by: Joe Damato
---
tools/testing/selftests/net/lib/py/netns.py | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/net/lib/py/netns.py
b/tools/test
On Thu, Apr 10, 2025 at 12:12:33PM -0700, Alison Schofield wrote:
> On Thu, Apr 10, 2025 at 11:10:20AM +0200, David Hildenbrand wrote:
> > Alison reports an issue with fsdax when large extends end up using
> > large ZONE_DEVICE folios:
> >
>
> Passes the ndctl/dax unit tests.
>
> Tested-by: Aliso
On Wed, 16 Apr 2025 15:46:42 +0800 Jason Wang wrote:
> On Wed, Apr 16, 2025 at 2:54 PM Bui Quang Minh
> wrote:
> > On 4/16/25 11:27, Jakub Kicinski wrote:
> > > Unfortunately this doesn't work on a basic QEMU setup:
> > >
> > > # ethtool -G eth0 rx 128
> > > [ 15.680655][ T287] virtio_net vi
This test program, originally written by Mark Rutland and lightly modified
by me for upstream, verifies that we do not have the issues with host SVE
state being discarded which were fixed in
fbc7e61195e2 ("KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME
state")
by running a simple
On Fri, Apr 11, 2025 at 1:32 PM Alexis Lothoré (eBPF Foundation)
wrote:
>
> In order to properly JIT the trampolines needed to attach BPF programs
> to functions, some architectures like ARM64 need to know about the
> alignment needed for the function arguments. Such alignment can
> generally be d
On Wed, Apr 16, 2025 at 09:50:44PM +0300, Jarkko Sakkinen wrote:
> On Tue, Apr 15, 2025 at 02:51:21PM +0300, Elena Reshetova wrote:
> > Note: The serialization for sgx_nr_total_pages is not needed because
> > the variable is only updated during the initialization and there's no
> > concurrent acces
On Tue, Apr 15, 2025 at 02:51:21PM +0300, Elena Reshetova wrote:
> Note: The serialization for sgx_nr_total_pages is not needed because
> the variable is only updated during the initialization and there's no
> concurrent access.
No. It's
- not a side-note but core part of the rationale.
- the rea
On Tue, Apr 15, 2025 at 02:51:22PM +0300, Elena Reshetova wrote:
> SGX architecture introduced a new instruction called EUPDATESVN
> to Ice Lake. It allows updating security SVN version, given that EPC
> is completely empty. The latter is required for security reasons
> in order to reason that encl
As byte buffer is overlaid with a 'struct dirent64'.
it has to satisfy the structs alignment requirements.
Fixes: 665fa8dea90d ("tools/nolibc: add support for directory access")
Signed-off-by: Thomas Weißschuh
---
tools/include/nolibc/dirent.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/
Hello Vlad,
On Wed, Apr 16, 2025 at 05:04:31PM +0200, Uladzislau Rezki wrote:
> On Wed, Apr 16, 2025 at 07:14:04AM -0700, Breno Leitao wrote:
> > Hi Boqun,
> >
> > On Sun, Apr 13, 2025 at 11:00:47PM -0700, Boqun Feng wrote:
> >
> > > Overall it looks promising to me, but I would like to see how
smash_stack() intentionally crashes.
Prevent UBSAN from tripping over it.
Signed-off-by: Thomas Weißschuh
---
tools/testing/selftests/nolibc/nolibc-test.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/nolibc/nolibc-test.c
b/tools/testing/selftests/nolibc/nolibc-te
UBSAN detects undefined behaviour at runtime.
To avoid introduction of new UB, enable UBSAN for nolibc-test.
By signalling detected errors through traps no runtime dependency
is necessary.
Signed-off-by: Thomas Weißschuh
---
tools/testing/selftests/nolibc/Makefile | 3 ++-
1 file changed, 2 ins
Certain compiler features are signaled via the __has_feature()
preprocessor builtin.
Add a nolibc wrapper for it, similar to __nolibc_has_attribute().
Signed-off-by: Thomas Weißschuh
---
tools/include/nolibc/compiler.h | 6 ++
1 file changed, 6 insertions(+)
diff --git a/tools/include/noli
: 7c73c10b906778384843b9d3ac6c2224727bbf5c
change-id: 20250416-nolibc-ubsan-028401698654
Best regards,
--
Thomas Weißschuh
In twos complement the most negative number can not be negated.
Fixes: b1c21e7d99cd ("tools/nolibc/stdlib: add i64toa() and u64toa()")
Fixes: 66c397c4d2e1 ("tools/nolibc/stdlib: replace the ltoa() function with
more efficient ones")
Signed-off-by: Thomas Weißschuh
---
tools/include/nolibc/stdli
Both constructors and main() may be executed with different function
signatures than they are actually using.
This is intentional but trips up UBSAN.
Disable the function sanitizer of UBSAN in _start_c().
Signed-off-by: Thomas Weißschuh
---
tools/include/nolibc/crt.h | 5 +
1 file changed,
On Tue, 15 Apr 2025 16:01:01 +0300, Alexey Minnekhanov wrote:
> During initial porting these cd-gpios were missed. Having card detect is
> beneficial because driver does not need to do polling every second and it
> can just use IRQ. SD card detection in U-Boot is also fixed by this.
>
> Fixes: c
If we try to access argument which is pointer to const void, it's an
UNKNOWN type, verifier will fail to load.
Use is_void_or_int_ptr to check if type is void or int pointer.
And fix selftests.
---
KaFai Wan (2):
bpf: Allow access to const void pointer arguments in tracing programs
selftes
Adding verifier test for accessing const void pointer argument in
tracing programs.
The test program loads 1st argument of bpf_fentry_test10 function
which is const void pointer and checks that verifier allows that.
Signed-off-by: KaFai Wan
---
net/bpf/test_run.c
Adding support to access arguments with const void pointer arguments
in tracing programs.
Currently we allow tracing programs to access void pointers. If we try to
access argument which is pointer to const void like 2nd argument in kfree,
verifier will fail to load the program with;
0: R1=ctx() R
2025-04-15, 13:17:17 +0200, Antonio Quartulli wrote:
> Notable changes since v25:
> * removed netdev notifier (was only used for our own devices)
> * added .dellink implementation to address what was previously
> done in notifier
> * removed .ndo_open and moved netif_carrier_off() call to .ndo_in
On Wed, Apr 16, 2025 at 07:14:04AM -0700, Breno Leitao wrote:
> Hi Boqun,
>
> On Sun, Apr 13, 2025 at 11:00:47PM -0700, Boqun Feng wrote:
>
> > Overall it looks promising to me, but I would like to see how it
> > performs in the environment of Breno. Also as Paul always reminds me:
> > buggy code
Hi Boqun,
On Sun, Apr 13, 2025 at 11:00:47PM -0700, Boqun Feng wrote:
> Overall it looks promising to me, but I would like to see how it
> performs in the environment of Breno. Also as Paul always reminds me:
> buggy code usually run faster, so please take a look in case I'm missing
> something ;
On 2/27/25 19:49, Shyam Saini wrote:
> Hi Everyone,
>
> This patch series fixes handling of module_kobject creation.
> A driver expect module_kset list populated with its corresponding
> module_kobject to create its /sys/module//drivers
> directory.
>
> Since,
> [1] commit 96a1a2412acb ("kernel/p
On Sat, 2025-03-22 at 01:29 +0100, Halil Pasic wrote:
> As per virtio spec the fields cols and rows are specified as little
> endian. Although there is no legacy interface requirement that would
> state that cols and rows need to be handled as native endian when
> legacy
> interface is used, unlike
On 4/11/25 12:32, Stefano Garzarella wrote:
> On Thu, Apr 10, 2025 at 12:51:48PM +0200, Paolo Abeni wrote:
>> On 4/7/25 8:41 PM, Michal Luczaj wrote:
>>> Change the behaviour of a lingering close(): instead of waiting for all
>>> data to be consumed, block until data is considered sent, i.e. until
> On Tue, 2025-04-15 at 14:51 +0300, Elena Reshetova wrote:
> > SGX architecture introduced a new instruction called EUPDATESVN
>
> "a new ENCLS leaf function EUPDATESVN"?
Yes, you are right, better wording, will fix.
>
> > to Ice Lake. It allows updating security SVN version, given that EPC
> On Tue, 2025-04-15 at 14:51 +0300, Elena Reshetova wrote:
> > sgx_nr_free_pages is an atomic that is used to keep track of
> > free EPC pages and detect whenever page reclaiming should start.
> > Since successful execution of ENCLS[EUPDATESVN] requires empty
>
> The mentioning of ENCLS[EUPDATE
> On Apr 15, 2025, at 8:19 PM, Paul E. McKenney wrote:
>
> On Mon, Apr 14, 2025 at 11:05:45AM -0400, Joel Fernandes wrote:
>> On 4/10/2025 2:29 PM, Paul E. McKenney wrote:
+static int rcu_gpwrap_lag_init(void)
+{
+if (gpwrap_lag_cycle_mins <= 0 || gpwrap_lag_active_mins <= 0
On Tue, 2025-04-15 at 14:51 +0300, Elena Reshetova wrote:
> sgx_nr_free_pages is an atomic that is used to keep track of
> free EPC pages and detect whenever page reclaiming should start.
> Since successful execution of ENCLS[EUPDATESVN] requires empty
The mentioning of ENCLS[EUPDATESVN] is kinda
On Tue, Apr 8, 2025 at 8:28 AM Jason Wang wrote:
>
> On Tue, Apr 8, 2025 at 9:18 AM Jon Kohler wrote:
> >
> >
> >
> > > On Apr 6, 2025, at 7:14 PM, Jason Wang wrote:
> > >
> > > !---|
> > > CAUTION: External Email
> > >
> > > |
On Wed, Apr 16, 2025 at 05:38:25PM +0800, David Gow wrote:
> The 32-bit sparc configuration (--arch sparc) crashes on
> the kunit_fault_test. It's known that some architectures don't handle
> deliberate segfaults in kernel mode well, so there's a config switch to
> disable tests which rely upon it
The 32-bit sparc configuration (--arch sparc) crashes on
the kunit_fault_test. It's known that some architectures don't handle
deliberate segfaults in kernel mode well, so there's a config switch to
disable tests which rely upon it by default.
Use this for the sparc config, making sure the default
On Tue, 15 Apr 2025 at 21:38, Thomas Weißschuh
wrote:
>
> Add a basic config to run kunit tests on 64-bit SPARC.
>
> Signed-off-by: Thomas Weißschuh
> ---
Thanks!
Reviewed-by: David Gow
Cheers,
-- David
> tools/testing/kunit/qemu_configs/sparc64.py | 16
> 1 file changed,
On Tue, 15 Apr 2025 at 21:38, Thomas Weißschuh
wrote:
>
> The configuration generated by kunit ends up with a 32bit configuration.
> A new kunit configuration for 64bit is to be added.
> To make the difference clearer spell out the variant in the kunit
> reference config.
>
> Signed-off-by: Thomas
On Tue, Apr 15, 2025 at 05:04:14PM -0400, Waiman Long
wrote:
> + /*
> + * Child 2 has memory.low=0, but some low protection is still being
> + * distributed down from its parent with memory.low=50M if cgroup2
> + * memory_recursiveprot mount option is enabled. So the low event
On 4/16/25 14:46, Jason Wang wrote:
On Wed, Apr 16, 2025 at 2:54 PM Bui Quang Minh wrote:
On 4/16/25 11:27, Jakub Kicinski wrote:
On Tue, 15 Apr 2025 14:43:41 +0700 Bui Quang Minh wrote:
+def setup_xsk(cfg, xdp_queue_id = 0) -> bkg:
+# Probe for support
+xdp = cmd(f'{cfg.net_lib_dir /
Hi Jason,
Would you mind helping confirm if it resolves your concern in v2?
Thank you very much!
Dongli Zhang
On 4/2/25 11:29 PM, Dongli Zhang wrote:
> Currently, the only user of vhost_log_write() is vhost-net. The 'len'
> argument prevents logging of pages that are not tainted by the RX path.
From: Iuliana Prodan
Some DSP firmware requires a FW_READY signal before proceeding, while
others do not.
Therefore, add support to handle i.MX DSP-specific features.
Implement handle_rsc callback to handle resource table parsing and to
process DSP-specific resource, to determine if waiting is n
On Wed, Apr 16, 2025 at 2:54 PM Bui Quang Minh wrote:
>
> On 4/16/25 11:27, Jakub Kicinski wrote:
> > On Tue, 15 Apr 2025 14:43:41 +0700 Bui Quang Minh wrote:
> >> +def setup_xsk(cfg, xdp_queue_id = 0) -> bkg:
> >> +# Probe for support
> >> +xdp = cmd(f'{cfg.net_lib_dir / "xdp_helper"} - -
On Tue, 2025-04-15 at 14:51 +0300, Elena Reshetova wrote:
> SGX architecture introduced a new instruction called EUPDATESVN
"a new ENCLS leaf function EUPDATESVN"?
> to Ice Lake. It allows updating security SVN version, given that EPC
> is completely empty. The latter is required for security rea
On Tue, Apr 15, 2025 at 10:58:41AM -0700, Paul E. McKenney wrote:
> On Tue, Apr 15, 2025 at 09:06:46AM -0700, Suren Baghdasaryan wrote:
> > On Tue, Apr 15, 2025 at 6:11 AM Lorenzo Stoakes
> > wrote:
> > >
> > > Currently the VMA and mmap locking logic is entangled in two of the most
> > > overwrou
Kindly ping... Any comments on this patch series? Thanks.
On 3/25/2025 1:30 AM, Mingwei Zhang wrote:
> With joint effort from the upstream KVM community, we come up with the
> 4th version of mediated vPMU for x86. We have made the following changes
> on top of the previous RFC v3.
>
> v3 -> v4
>
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