From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-it1-f169.google.com (mail-it1-f169.google.com [209.85.166.169]) by fantadrom.bsd.lv (OpenSMTPD) with ESMTP id fffd2e3b for ; Wed, 13 Feb 2019 00:45:21 -0500 (EST) Received: by mail-it1-f169.google.com with SMTP id y184so2959787itc.1 for ; Tue, 12 Feb 2019 21:45:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cathet-us.20150623.gappssmtp.com; s=20150623; h=sender:from:to:subject:mime-version:content-id:date:message-id; bh=1AHCbQj6lx1Yvrd9KdLCRgPSZNMaDl/8lw94amWW4qE=; b=oJkG1+3ARkng+tXjItasAgvFoTsDWcGlmT+HQOBUEuOunNUFM4KFEAbKcHyL/NnbJ4 krWaVOI3zykF+Ll9fMu/WlfMP96Ip44yRmAV2HnP3Tr2YPGAT5U61om9Kp0XXi5iATgS iEjMcbHe34iONnXoUMfI+Vu37bc/E9xKifDcIcJAjEbc8X0c/Pc4+R554Im2nF+SDZgn 0sztUEj/3HsiNd3XwHSOCz0FdCK3Td8BUKOWeyq+oUnK784bnNKhFblZB5EBBICySIeK tKcpa2aXelnzZUgwyx4sa6lisRTT8tPNMbCNkK02XkAFd8LkmFCTkHlHf+jNA2RJM6Zp R6og== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:subject:mime-version:content-id :date:message-id; bh=1AHCbQj6lx1Yvrd9KdLCRgPSZNMaDl/8lw94amWW4qE=; b=ZLJvGBfhVV85ZTq83IREonzRfOlo+f/jqTwhNiQOnn6NG01+hF0oYTyoUwP5wd8qhr 0iKAfhN2Do9sdi0tXV62YLjCo3aO8R8bfE7tY+kMTRO1Io6clwtiepJjMECCxTqKzKZC ZaImLO7X9p3ZvinORpqPcw6Mf2B9j7QQ7OFUJWzg7ZTRQPqx7MmB1h+Nkt9LrKB0tWIX bKzcPuOj661Hta5bxD2IV3MOpI9p8n7Gy9CzdWy8zuJQGBMXNPtQIsdaJzOi2Vq19xKP CfONv2D+05kRy9TlkRumKm3IEhtpW1G0u91zl8zyehsJ9GHdUbKudgmxfmls/uJMmh+6 CiDg== X-Gm-Message-State: AHQUAuZoDV1IbSdHR0T8gYu9HEH+d1qko/2PbUyPe/T+aZHV+/obJ4y8 rCO+ksfQ1hOZdlPUxv6AJZNRpZ+yBRE= X-Google-Smtp-Source: AHgI3IbwBOnKVpyurlFJQyu6TjwM8gHokgM0ryQGn3bzaYWLinHzq3IWqaHPrA3it/rBDJ1e6nONZA== X-Received: by 2002:a5d:934a:: with SMTP id i10mr4019110ioo.162.1550036719619; Tue, 12 Feb 2019 21:45:19 -0800 (PST) Received: from desktop.ajb.soy (67-0-35-139.albq.qwest.net. [67.0.35.139]) by smtp.gmail.com with ESMTPSA id 136sm2682593itw.21.2019.02.12.21.45.18 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 12 Feb 2019 21:45:18 -0800 (PST) Sender: "Anthony J. Bentley" Received: from desktop.ajb.soy (localhost [127.0.0.1]) by desktop.ajb.soy (OpenSMTPD) with ESMTP id 67afa44c for ; Tue, 12 Feb 2019 22:45:16 -0700 (MST) From: "Anthony J. Bentley" To: tech@mandoc.bsd.lv Subject: malloc canary corruption X-Mailinglist: mandoc-tech Reply-To: tech@mandoc.bsd.lv MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <93765.1550036716.1@desktop.ajb.soy> Date: Tue, 12 Feb 2019 22:45:16 -0700 Message-ID: <47544.1550036716@desktop.ajb.soy> Hi, I noticed rancid's par(1) caused mandoc to crash. $ sysctl vm.malloc_conf vm.malloc_conf=C $ cat example # note the blank line .P .El .El $ mandoc example mandoc(90888) in free(): chunk canary corrupted 0xb73c1ad12f0 0x1@0x1 Abort trap (core dumped) -- Anthony J. Bentley -- To unsubscribe send an email to tech+unsubscribe@mandoc.bsd.lv