From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail231.csoft.net (mail231.csoft.net [96.47.74.235]) by sourceware.org (Postfix) with ESMTPS id 0891E3858406 for ; Sun, 26 Dec 2021 04:56:19 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 0891E3858406 Received: from mail231.csoft.net (localhost [127.0.0.1]) by mail231.csoft.net (Postfix) with ESMTP id E839BCBCA; Sat, 25 Dec 2021 23:56:17 -0500 (EST) Received: from mail231 (mail231 [96.47.74.235]) (using TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits)) (No client certificate requested) (Authenticated sender: jeremyd) by mail231.csoft.net (Postfix) with ESMTPSA id D5472CBC1; Sat, 25 Dec 2021 23:56:17 -0500 (EST) Date: Sat, 25 Dec 2021 20:56:17 -0800 (PST) From: Jeremy Drake X-X-Sender: jeremyd@resin.csoft.net To: Ken Brown cc: Takashi Yano , cygwin-patches@cygwin.com Subject: Re: [PATCH] fhandler_pipe: add sanity limit to handle loops In-Reply-To: <8172019c-e048-4fe2-79c9-0b3262057d3e@cornell.edu> Message-ID: References: <622d3ac6-fa5d-965c-52da-db7a4463fffd@cornell.edu> <20211225121902.54b82f1bb0d4f958d34a8bb7@nifty.ne.jp> <20211225131242.adef568db53d561a6b134612@nifty.ne.jp> <20211226021010.a2b2ad28f12df9ffb25b6584@nifty.ne.jp> <8172019c-e048-4fe2-79c9-0b3262057d3e@cornell.edu> User-Agent: Alpine 2.21 (BSO 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: cygwin-patches@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin core component patch submission and discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 26 Dec 2021 04:56:20 -0000 I set up a windows server 2022 VM last night and went nuts stressing pacman/GPGME. I was able to reproduce the issue there: status = 0x00000000, phi->NumberOfHandles = 8261392, n_handle = 256 [#####----------------------------------] 14% assertion "phi->NumberOfHandles <= n_handle" failed: file "../../.././winsup/cygwin/fhandler_pipe.cc", line 1281, function: void* fhandler_pipe::get_query_hdl_per_process(WCHAR*, OBJECT_NAME_INFORMATION*) So it is not something inherent in the x86_64-on-ARM64 emulation but can happen on native x86_64 also.