Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mnx9U-0002dj-IR for pgsql-bugs@arkaria.postgresql.org; Fri, 19 Nov 2021 06:13:36 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1mnx9S-0002aP-K6 for pgsql-bugs@arkaria.postgresql.org; Fri, 19 Nov 2021 06:13:34 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mnx9S-0002aE-0t for pgsql-bugs@lists.postgresql.org; Fri, 19 Nov 2021 06:13:34 +0000 Received: from mail-qt1-x82f.google.com ([2607:f8b0:4864:20::82f]) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1mnx9O-0005tO-NF for pgsql-bugs@lists.postgresql.org; Fri, 19 Nov 2021 06:13:32 +0000 Received: by mail-qt1-x82f.google.com with SMTP id t11so8645170qtw.3 for ; Thu, 18 Nov 2021 22:13:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=leadboat.com; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=ri84AZ7Pd7luAtDE+KhpPXAn1H/tNEDITRbO8hV3sLI=; b=RZqesfOxoBLA73cZLW72z5PZDwerlz2b83WolB7XhUoRNERlEou2RSOu4WmT32Fj7x RUibs7yS+kMPov85ErUFms9xF4Vz+wzwCG6QCEoXhw1ktPeBXasBStxkBIhUBHttHqUJ 8hpOZonx8+KfauQf3TI52ESjnykZtfPHuRkY4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=ri84AZ7Pd7luAtDE+KhpPXAn1H/tNEDITRbO8hV3sLI=; b=EJd1/cfm/mORXNTKGuJHi4/JDtd0/uKNtd/hC4jk//xppBVNPV/vOV0/dpz2GAWWbJ 8gYoY74ARUTBelYSkuoZY1WWEENU3T8SY8pB0ofGhK+AX12hN5t4z9UX0mrhMZhBc1RR QMHCypQjdm+0PxxJL9UBqkPLSf+2fZv59Tp/ui2Egl4KUivyq0/f4UHbwmr/ceBioYrx 6BahGMUQxez5zmtSGYbZhLWWqCSs6B6xDnA9jUpbRqwda0vNveKDnbt27gK0fAlvqCmk qaQ9Sx1Mh1BMAsmI/oo4j9dtVNcO4Hl9Sl79rodol4zx2iUo4iq5m6yahQgSryseliwr IO+A== X-Gm-Message-State: AOAM53156mT2XanltOH9ZzmYHrs4owyi5eyGLi/VP6IZNpTCgwaVL6Kz t7WlFUmxKClns0b6zWW15ApSWA== X-Google-Smtp-Source: ABdhPJz6l82iEr/XNcsFWeyEC+gZpFUFSwPMPqyIpTY5LOd8p27AcXotLv4i6llipNdRpXoIRtLBhg== X-Received: by 2002:a05:622a:13c6:: with SMTP id p6mr3604522qtk.2.1637302409491; Thu, 18 Nov 2021 22:13:29 -0800 (PST) Received: from rfd.leadboat.com ([2600:1702:a20:5750::46]) by smtp.gmail.com with ESMTPSA id bp38sm1184181qkb.66.2021.11.18.22.13.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 18 Nov 2021 22:13:28 -0800 (PST) Date: Thu, 18 Nov 2021 22:13:25 -0800 From: Noah Misch To: Thomas Munro Cc: Andrey Borodin , PostgreSQL mailing lists , Michael Paquier , Tom Lane , Peter Geoghegan , Andres Freund Subject: Re: conchuela timeouts since 2021-10-09 system upgrade Message-ID: <20211119061325.GA1337598@rfd.leadboat.com> References: <640FA6DC-A998-4499-B3B4-2773685B8C56@yandex-team.ru> <20211029025600.GB298507@rfd.leadboat.com> <20211110041541.GA971565@rfd.leadboat.com> <4C43D751-8E0B-478D-B358-7C52BB5AFDAA@yandex-team.ru> <633901636829263@sas1-7f179212b74f.qloud-c.yandex.net> <20211114000952.GA1117894@rfd.leadboat.com> <0CD98EB5-71AC-4D84-BC90-93674B6330F4@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Fri, Nov 19, 2021 at 05:52:59PM +1300, Thomas Munro wrote: > led me to try a very simply C program which runs to > completion on Linux and FreeBSD, but hangs forever on Dragonfly. > [pipe FD considered non-writable, but writing would give EPIPE] Looks like optimal material for a kernel bug report. Excellent discovery.