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Thu, 24 Sep 2026 03:23:16 -0700 (PDT) From: Donggeun Yoo To: bot+bpf-ci@kernel.org, bpf@vger.kernel.org Cc: Donggeun Yoo , ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, eddyz87@gmail.com, memxor@gmail.com, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, jolsa@kernel.org, emil@etsalapatis.com, ihor.solodrai@linux.dev, leon.hwang@linux.dev, martin.lau@kernel.org, mason@kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH bpf v2 2/2] selftests/bpf: Test per-cpu initialization of a BPF_F_CPU created element Date: Thu, 24 Sep 2026 19:23:10 +0900 Message-ID: <20260924102310.2120408-1-donggeunyoo.kernel@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <3d31f180b472adb3b215571fa73ba38641cc93a33ea2e8e82413f37957c2d99a@mail.kernel.org> References: <20260923000801.1764758-1-donggeunyoo.kernel@gmail.com> <20260923000801.1764758-3-donggeunyoo.kernel@gmail.com> <3d31f180b472adb3b215571fa73ba38641cc93a33ea2e8e82413f37957c2d99a@mail.kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Wed, 23 Sep 2026 00:56:18 +0000 (UTC), bot+bpf-ci@kernel.org wrote: > Can this test give false negatives on the BPF_F_NO_PREALLOC variant? [...] > Should this arm either pin the thread with sched_setaffinity() around the > delete/create pair, or loop over all CPUs to make the result deterministic? Confirmed, it gives false negatives. Fixed in v3 by pinning the thread to one cpu. Thanks, Donggeun