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Sat, 23 May 2026 11:32:23 -0700 (PDT) Received: from fedora ([2601:646:8081:3770:10ff:fc71:c346:9948]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3045225b7b6sm5660277eec.25.2026.05.23.11.32.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 May 2026 11:32:23 -0700 (PDT) From: Collin Funk To: Christoph Hellwig Cc: bug-gnulib@gnu.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jan Kara , Christian Brauner Subject: Re: test-fdutimensat failures after 7.0.6-200.fc44.x86_64 kernel update In-Reply-To: <20260518055617.GB10368@lst.de> References: <8733zsj5qj.fsf@gmail.com> <20260518055617.GB10368@lst.de> Date: Sat, 23 May 2026 11:32:22 -0700 Message-ID: <87ik8enfih.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Hi Christoph, Christoph Hellwig writes: > On Fri, May 15, 2026 at 10:14:28PM -0700, Collin Funk wrote: >> Adding some print statements in place of the comment: >> >> fprintf (stderr, "%jd\n", (intmax_t) st3.st_atime); >> fprintf (stderr, "%jd\n", (intmax_t) Y2K); >> fprintf (stderr, "----------------\n"); > > Can you share a complete stand-alone C source file for this > reproducer? It would be quite difficult. The test uses a nap function that sleeps until the system can notice a timestamp difference. It attempts to use the smallest interval possible, which requires a bit of work [1]. Apologies for the late reply, I haven't been able to reproduce this since my original report. I'll let you know if it occurs again and hopefully I can create a simple reproducer. Thanks, Collin [1] https://github.com/coreutils/gnulib/blob/5ab7a04761dac69403f677de4ee44c1940777b46/tests/nap.h