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Thu, 18 Jun 2026 08:35:51 -0700 (PDT) X-Received: by 2002:a05:600c:154a:b0:491:7325:39c4 with SMTP id 5b1f17b1804b1-4923f594ca9mr1204615e9.34.1781796950737; Thu, 18 Jun 2026 08:35:50 -0700 (PDT) Received: from [192.168.1.167] ([185.168.96.228]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4606f2e6a8fsm65687963f8f.37.2026.06.18.08.35.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Jun 2026 08:35:50 -0700 (PDT) Message-ID: <2de882a2dcf09613580bcb2495e3b2495c58f661.camel@redhat.com> Subject: Re: [PATCH 0/3] rv/reactors: fix lockdep warning and add KUnit tests From: Gabriele Monaco To: Wen Yang Cc: Nam Cao , linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org Date: Thu, 18 Jun 2026 17:35:49 +0200 In-Reply-To: <4053c9bb-6229-438c-8c14-917909c1618f@linux.dev> References: <2bcfa0bda551c0e1ba137b728dbe7886ff5c2579.camel@redhat.com> <4053c9bb-6229-438c-8c14-917909c1618f@linux.dev> User-Agent: Evolution 3.60.2 (3.60.2-1.fc44) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: GEqVF-ntfkK7hx-5FhF_irZhJWevP-Hf5TJ3C3fMIXo_1781796951 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2026-06-18 at 01:11 +0800, Wen Yang wrote: > Thank you for your feedback. > I am using a WSL dev environment with 12 cores and 16GB. The config > of the tested kernel code is as follows: Uhm that's a strange one, I cannot get a machine like that.. The closest is a 16 CPUs where I can limit the resources in vng. > And then, using vng to build and run kselftests (since kunit is > already=20 > built-in) can reproduce this issue: >=20 > $ vng --build >=20 > $ vng -v --run arch/x86/boot/bzImage --user root --=20 > tools/testing/selftests/verification/verificationtest-ktap Well whenever I pass some argument to vng (instead of just vng -v that brin= gs up an interactive shell), I see an unrelated lockdep splat in timekeeping_init(), but all clear when the KUnit runs.. I'm going to try and understand better what's going on, I don't think I can reproduce it easily. Thanks, Gabriele