DMARC-Filter: OpenDMARC Filter v1.4.2 delorie.com 503Km0j81289933 Authentication-Results: delorie.com; dmarc=pass (p=none dis=none) header.from=cygwin.com Authentication-Results: delorie.com; spf=pass smtp.mailfrom=cygwin.com DKIM-Filter: OpenDKIM Filter v2.11.0 delorie.com 503Km0j81289933 Authentication-Results: delorie.com; dkim=pass (1024-bit key, unprotected) header.d=cygwin.com header.i=@cygwin.com header.a=rsa-sha256 header.s=default header.b=Eprwa67i X-Recipient: archive-cygwin AT delorie DOT com DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7ABEF3858C54 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com; s=default; t=1735937279; bh=01AcScb+iuRlJeP5M2RMyQJIqyIxL6nkuK6BerSQKrQ=; h=Date:Subject:To:References:In-Reply-To:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=Eprwa67izyZ8HdU55av6xAwscm4pdxIjNh4/HJ9/PEPuHNBVcBn9u4ngsFWA6/aUY ge7nCihSff/3DQI/GvgARUgAwhoy1zhKe7gOWIkAKI+iFm3jyA2sAZbRr1o8GQgam5 5RfSaDqK+blV1DSnMe5txUAc0e7wVPyuQxPU4Ank= X-Original-To: cygwin AT cygwin DOT com Delivered-To: cygwin AT cygwin DOT com DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 28AAB3858D20 ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 28AAB3858D20 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1735937220; cv=none; b=mei9hGnWjvZoQ95FVWWwi6qcomMxTSf5AXaY1xy7u8NqBAmPxV2sEI+WZBZ1vcObWNBD4drml3wphx2kEFI2SqU8nccHVX4yHGWz4oyD/tXVoCGOjEgD6DF5xe6DMkDeDKoZ7v4rvZdfPT+pZ9lFUS59H0ZFAtmU/vVzv4wqKII= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1735937220; c=relaxed/simple; bh=BgkkDns+P7HHcTpVRWEqrq6h0yhdveeGg0Jbe2RecyM=; h=DKIM-Signature:Message-ID:Date:MIME-Version:Subject:To:From; b=jIdBVn88ltLCFI4+iO9Xr7T1VGj7QALuUAD2ntTWxYFQYld4jhig58Ca80yVu5oB0W1fXxQrLbK2F0N75TNalyC4eMoa675toZdQTB+ggA5ZtIs/6azkyG8Mt+S/4T6zK0rPDFqjVAMlu8XgspseDQBTNZ3H+KlGXoRx0RVokWE= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 28AAB3858D20 DKIM-Filter: OpenDKIM Filter v2.11.0 rctfw2.r-t.org E5D3C1816642 Message-ID: Date: Fri, 3 Jan 2025 15:47:00 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: random hangs To: cygwin AT cygwin DOT com References: <6aa017e0-b333-4c0e-affa-78c8777372a5 AT gmail DOT com> <1b894ce0-ee20-4408-95ec-54202d0721bc AT r-t DOT org> <7cdf5283-5507-4d35-aec6-a4bbab33ad48 AT r-t DOT org> <5b617762-38fd-4897-afff-219b92915b9f AT r-t DOT org> <66233ccc-7074-4c95-bb19-6c6c5092f94f AT gmail DOT com> <933a5502-c0c4-f149-70ba-89421ae893a7 AT jdrake DOT com> Content-Language: en-US In-Reply-To: <933a5502-c0c4-f149-70ba-89421ae893a7@jdrake.com> X-Content-Filtered-By: Mailman/MimeDel 2.1.30 X-BeenThere: cygwin AT cygwin DOT com X-Mailman-Version: 2.1.30 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Robert Terzi via Cygwin Reply-To: Robert Terzi Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com Sender: "Cygwin" Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by delorie.com id 503Km0j81289933 On 1/3/2025 2:45 PM, Jeremy Drake via Cygwin wrote: > There are known (and as yet unknown) hang issues with cygwin 3.5.5, the > known being in signal handling. You might try with cygwin 3.5.4 to see if > your hang issues go away. That might help elimiate python as the culprit. I'm seeing reproducible (for me) hangs with the test Python 3.12 packages under Cygwin 3.5.4. $ cygcheck -c | grep cyg base-cygwin 3.8-2 OK cygrunsrv 1.64-1 OK cygutils 1.4.17-1 OK cygutils-extra 1.4.17-1 OK cygwin 3.5.4-1 OK cygwin-devel 3.5.4-1 OK First, I see a hang doing `python312 -m pip install ipython` in a venv. The hang occurs during downloading. If the package is already downloaded it doesn't hang. So I'm doing a `pip cache purge` to get it to reoccur. It usually hangs on downloading Jedi which is a large-ish module. Downloading jedi-0.19.2-py2.py3-none-any.whl (1.6 MB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 0.0/1.6 MB ? eta -:--:-- If I do an end task and try again, it sometimes hangs on the next package > 1 MB: Downloading pygments-2.18.0-py3-none-any.whl (1.2 MB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 0.0/1.2 MB ? eta -:--:-- Second, Once I get IPython installed, it hangs as soon as I hit enter at the first prompt. (The input I give is empty, I just hit enter.) However, if I type `quit` it will exit without hanging. In both cases strace indicates it's stuck in a loop dealing with an exception, exception c0000005 at 0000000000000000 (Is that maybe a null pointer deref in a signal/exception handler?) Steps I'm taking are: # clean up from previous runs rm -rf /srv/pyvenvs/py312 pip3 cache purge # Create a venv in an empty directory python3.12 -m venv --system-site-packages --without-pip /srv/pyvenvs/py312 (The --without-pip is needed because it fails without it running `-m ensurepip` It is looking for the pip wheel but not finding it.) # activate venv and Install IPython source /srv/pyvenvs/py312/bin/activate python -m pip install ipython # When it hangs, end task and then repeat `pip install` until it succeeds. # Run IPython, hit enter at first prompt $ ipython Python 3.12.8 (main, Dec 28 2024, 22:01:20) [GCC 12.4.0] Type 'copyright', 'credits' or 'license' for more information IPython 8.31.0 -- An enhanced Interactive Python. Type '?' for help. In [1]: # it's now hung and only task manager "End Task" will kill it. -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple