From owner-freebsd-hackers@freebsd.org Wed Oct 3 12:18:42 2018 Return-Path: Delivered-To: freebsd-hackers@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 8A78C10C18C6 for ; Wed, 3 Oct 2018 12:18:42 +0000 (UTC) (envelope-from 6yearold@gmail.com) Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 01FC1781E1 for ; Wed, 3 Oct 2018 12:18:42 +0000 (UTC) (envelope-from 6yearold@gmail.com) Received: by mail-pl1-x62a.google.com with SMTP id az3-v6so3400696plb.4 for ; Wed, 03 Oct 2018 05:18:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=d4Sl23mBs/4E8+qewSxRVhYT+Do/UOZgJeyMMKn1XH4=; b=t2dm6BslVz3Zb1Pf2n3ezDoQJsXJppXUhAjxBIM7psUlxz0a+gQT5wADsGXEsa7o4u xW5PC+iydPqfCV1XeMMIh5tkhCmEGWiq7xrB4kaZaIvTNG5SY/1XK2BCgj0H5DnsY73u lDILScJBkKbUwUQSefTbyGheIhWyNCosn/WPwCgEd+pO50RtUM4Vt3D6WKz+y6QStiif laiIXz99wutCL/s2NQKTE0SVk5u+QktWhdyShPTCtcRxF3SwNKI9y4ASbe5wJV8TetwR hvX1pOLeL+CdpaXfWk6HKIiEDzY9K67mPP2KdyYpy+4mIiv6hiT6Bdf5IEFFiAbMAvtO GQBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=d4Sl23mBs/4E8+qewSxRVhYT+Do/UOZgJeyMMKn1XH4=; b=sWkgtbuEVajb2MRBjEtkmRlj9S0IETi2Jg63ob1L4rfVi1NFLzXVaw+3xd4q5ufwJ4 RzkQHviFJBKHlUL/r9saGJ3BUhITbJ1iILlZL9F2LZUwHXgkujWXInuzmcrM+M+V1DrF gUE6jV4dMbZcaFf+tmMZTsl4UuVXspvtZW7WyP1JJhBpklf2o3uDM9ZUEPnKAIEneZuw uoIPkayAdmbJs6+HRAFecsUH/jihkvE+i9EOOZkfPx5SoZ0OTlWGt3WyZXRC2GQXUvUX J1vmoGaGmX5pOLeFGcgivLiiI58R/DceZNHveQk8giXkLBrx/yAJ3dbEuKHhEdxcwTek BM2g== X-Gm-Message-State: ABuFfoi8/F0NZg8yVWHQAHANZVnDC1O+Zd0YPT1ktwaec901LcD5rIE8 sSxq/aLe/Ok7dpoQSc4X6I56UHKrS1Jc491DXb94oQ== X-Google-Smtp-Source: ACcGV60mLacuu4D5RGZ/YBHtN6oAqle+r8d1lgjQnIthottlvZSCOr7R1hza/pcF5O3V/VIaCOGY6Y1NVjR4RiH0diI= X-Received: by 2002:a17:902:694a:: with SMTP id k10-v6mr1370655plt.166.1538569120784; Wed, 03 Oct 2018 05:18:40 -0700 (PDT) MIME-Version: 1.0 References: <20180824185328.GE2340@kib.kiev.ua> <4e555da7-9384-0f22-3ef9-8b3661a48529@vangyzen.net> <20180824192315.GF2340@kib.kiev.ua> In-Reply-To: <20180824192315.GF2340@kib.kiev.ua> From: Gleb Popov <6yearold@gmail.com> Date: Wed, 3 Oct 2018 15:18:12 +0300 Message-ID: Subject: Re: Strange hang when calling signal() To: kostikbel@gmail.com Cc: freebsd-hackers X-Mailman-Approved-At: Wed, 03 Oct 2018 13:45:53 +0000 Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.27 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Oct 2018 12:18:42 -0000 I failed to extract a reproducing testcase from that test. The extracted code works fine, so either I missed something, or some hidden conditions must be fulfilled for the bug to appear. Maybe I can try to dive into libc myself? Can you give me some guidance? Or maybe you just build kdevelop yourself? It is a matter of handful of commands.