From owner-freebsd-current@freebsd.org Fri Nov 9 04:24:14 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C0C30112412C for ; Fri, 9 Nov 2018 04:24:14 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 0B4277D3FC; Fri, 9 Nov 2018 04:24:13 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id wA94O30f003487 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 9 Nov 2018 06:24:06 +0200 (EET) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua wA94O30f003487 Received: (from kostik@localhost) by tom.home (8.15.2/8.15.2/Submit) id wA94O2kY003486; Fri, 9 Nov 2018 06:24:02 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Fri, 9 Nov 2018 06:24:02 +0200 From: Konstantin Belousov To: Alan Somers Cc: FreeBSD CURRENT Subject: Re: Processes stuck in STOP state on 12.0-BETA3 Message-ID: <20181109042402.GD2378@kib.kiev.ua> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FORGED_GMAIL_RCVD,FREEMAIL_FROM, NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on tom.home X-Rspamd-Queue-Id: 0B4277D3FC X-Spamd-Result: default: False [-4.93 / 200.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; HAS_XAW(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; R_SPF_SOFTFAIL(0.00)[~all]; RCVD_COUNT_THREE(0.00)[3]; IP_SCORE(-1.97)[ip: (-1.78), ipnet: 2001:470::/32(-4.44), asn: 6939(-3.54), country: US(-0.09)]; TO_DN_ALL(0.00)[]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.95)[-0.954,0]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:6939, ipnet:2001:470::/32, country:US]; RCVD_TLS_LAST(0.00)[]; DMARC_POLICY_SOFTFAIL(0.10)[gmail.com : No valid SPF, No valid DKIM,none] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Nov 2018 04:24:14 -0000 On Thu, Nov 08, 2018 at 07:08:50PM -0700, Alan Somers wrote: > On a fresh install of 12.0-BETA3, I'm seeing processes get stuck in the > STOP state. Neither SIGCONT nor SIGKILL has any effect. And it's > reproducible. All I have to do is: > 1) Login to my login manager, which starts xfce > 2) Start firefox > 3) kill X > 4) Login again > 5) ps -ax | egrep '\' > > And I see three firefox processes. It's not just firefox either; I first > saw 0ad spontaneously enter the STOP state, without first killing X. > > Anybody have any ideas? The bug seems reproducible, so I'll try anything. Look at the state of all its threads using procstat -k.