From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Rajeev N via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#49682: 27.2.50; accept-process-output within accept-process-output hangs emacs Date: Mon, 26 Jul 2021 16:55:49 -0400 Message-ID: <874kcgeqwa.fsf@hm.sivalik.com> References: <87mtqfzpbl.fsf@hm.sivalik.com> <87k0ljpulj.fsf@gnus.org> <87czrbve2s.fsf@hm.sivalik.com> <87sg07od34.fsf@gnus.org> <874kclkls1.fsf@hm.sivalik.com> <895868e4-4f20-ba77-f4e5-7ea2715d18f0@yandex.ru> <87y29s7svx.fsf@hm.sivalik.com> <27f2f996-5cb2-acf2-4f94-b964a7f1d32a@yandex.ru> Reply-To: Rajeev N Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6339"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Lars Ingebrigtsen , 49682@debbugs.gnu.org To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Jul 26 22:56:09 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m87dx-0001Th-9w for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 26 Jul 2021 22:56:09 +0200 Original-Received: from localhost ([::1]:57770 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m87dw-0007Zg-BT for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 26 Jul 2021 16:56:08 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59716) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m87dq-0007ZY-5H for bug-gnu-emacs@gnu.org; Mon, 26 Jul 2021 16:56:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:40085) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1m87dp-00057r-Ta for bug-gnu-emacs@gnu.org; Mon, 26 Jul 2021 16:56:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1m87dp-00088C-TU for bug-gnu-emacs@gnu.org; Mon, 26 Jul 2021 16:56:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Rajeev N Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 26 Jul 2021 20:56:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 49682 X-GNU-PR-Package: emacs Original-Received: via spool by 49682-submit@debbugs.gnu.org id=B49682.162733295731245 (code B ref 49682); Mon, 26 Jul 2021 20:56:01 +0000 Original-Received: (at 49682) by debbugs.gnu.org; 26 Jul 2021 20:55:57 +0000 Original-Received: from localhost ([127.0.0.1]:51631 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1m87dl-00087t-KD for submit@debbugs.gnu.org; Mon, 26 Jul 2021 16:55:57 -0400 Original-Received: from vr0.sivalik.com ([104.238.130.12]:37048 helo=smtp.sivalik.com) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1m87dj-00087e-RB for 49682@debbugs.gnu.org; Mon, 26 Jul 2021 16:55:56 -0400 Original-Received: from hp (pool-96-242-220-29.nwrknj.fios.verizon.net [96.242.220.29]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: rajeev@sivalik.com) by smtp.sivalik.com (Postfix) with ESMTPSA id 2120B620CF; Mon, 26 Jul 2021 16:55:50 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=sivalik.com; s=svlk; t=1627332950; bh=zk5GMDjVbUFL094reL+VcFV4mzeDXwUH8bUxHEYQPXs=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=PZdAdyuwaMCyKrxEhF63XTPzvAoMx8fyn/em1b/qWRThv73C1QvH19oyoxvO+umxn TWvn2n7gPcukcoCaxYbJyI8MZcy1w8gvOI21XL9osMQ7k94AgIAvupTtBx1OHqDDvT rkYffoNRXhyRotVywC2m8VwQhvZxbmifRg7AewyA= X-No-Archive: yes In-Reply-To: <27f2f996-5cb2-acf2-4f94-b964a7f1d32a@yandex.ru> (Dmitry Gutov's message of "Mon, 26 Jul 2021 23:22:57 +0300") Content-Disposition: inline X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" X-Gmane-Expiry: 2021-08-09 Xref: news.gmane.io gmane.emacs.bugs:210766 Archived-At: I am able to reproduce the hang on head of master and emacs-27 branches using emacs -Q, it does not happen every time, sometime it takes a few tries. The following is what is shown by strace in a loop: pselect6(20, [3 5 13 17 19], NULL, NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 pselect6(20, [3 5 6 8 13 15 17 19], [], NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 pselect6(20, [3 5 13 17 19], NULL, NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 pselect6(20, [3 5 6 8 13 15 17 19], [], NULL, {tv_sec=0, tv_nsec=0}, {NULL, 8}) = 1 (in [19], left {tv_sec=0, tv_nsec=0}) rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0