From owner-freebsd-hackers@FreeBSD.ORG Tue Feb 15 18:12:46 2011 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 114EE106566B for ; Tue, 15 Feb 2011 18:12:46 +0000 (UTC) (envelope-from drbaud@yahoo.com) Received: from web120708.mail.ne1.yahoo.com (web120708.mail.ne1.yahoo.com [98.138.82.215]) by mx1.freebsd.org (Postfix) with SMTP id CB0D48FC12 for ; Tue, 15 Feb 2011 18:12:45 +0000 (UTC) Received: (qmail 41209 invoked by uid 60001); 15 Feb 2011 17:46:05 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1297791965; bh=1Lu/IHNJmvNxwgROEtuOiNQReD1rBj5VYXGSAkVOQ1M=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=MsZTtQRuIgdJjsxVm6TDBksZFcHzLt0uyctEIAne7KL8qRuHs3JJd5+1ZyQ63VYo9HUXQEOZN5ruYKNCUgcjsLwLPjJ+rctDZa5Uqb+6/IUJvLNIoW3sg2iYN10JigAbqvJmyiUndbwsTyRWK9sHXKh9JRFgMA0OsOGAQTrX2t8= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=bLQoLc84WyP3GSAJZsqWwkQmlZOjzCq2u8mfoC9N9M35uluGVo3xOnlEZs0eC0PTRFh1yjOuh1JxXOVgiyp4AJ3FjvcTeYsyTHt/rO38yEx+sWHO09VgzHVqLyUIqhqmDnEutuVk0k7AlpC3J7vhb/Ukn4x98IqpVdx11i/mCAQ=; Message-ID: <628608.40948.qm@web120708.mail.ne1.yahoo.com> X-YMail-OSG: FC07_iYVM1nz67.H.BY6HkzaLPihi4Q.dWv8P9fTxcrhHE4 q6g__olzNvuvShYFv1tnBFDEq2uwSpLe3LlWVHfdUNlyN5krJV5AtqR7Z.C6 yCfMHSG6k3fhGtei2clgcm85d1i8xI9_v6ln3lOawP12cvV1TLY4dKyOHj8Q GhrQtKNIprtYS4DFXtJ1APg78t5RZe5HdtHHneBgKNT080XrfCyk9E17JBgX Opht3I9PJu0OOPski3rxhCpxg6kZkQMW3gmRk55G1UUFavrETYvw5A4KeFbA pDTboP5OQR2QL8XHV8cBbeyUk Received: from [64.238.244.146] by web120708.mail.ne1.yahoo.com via HTTP; Tue, 15 Feb 2011 09:46:05 PST X-Mailer: YahooMailRC/555 YahooMailWebService/0.8.108.291010 Date: Tue, 15 Feb 2011 09:46:05 -0800 (PST) From: "Dr. Baud" To: freebsd-hackers@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Mailman-Approved-At: Tue, 15 Feb 2011 18:28:20 +0000 Subject: spontaneous reboot - ptrace X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Feb 2011 18:12:46 -0000 I've an interesting anomaly I'd appreciate some help with.=0A=0AAs a re= sult of looking at a threading problem I modified gcore =0Ato dump all memo= ry segments associated with a process;=0Abasically comment out the "Ignore"= conditional in readmap().=0A The result is that the box spontaneously r= eboots sometime=0ABetween 40 and 50 seconds into the dump; this is an appli= cation=0Athat is indeed a memory hog. I commented out the actual=0Awrite to= disk and the result is the same. I=E2=80=99ve even disabled the=0Awatchdog= to no avail.=0A=0A This is a vanilla 8.1 install:=0A=0AFreeBSD pollyann= a 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19 02:36:49 UTC =0A2010=0A = root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64=0A=0A r= unning on fairly vanilla hardware:=0A=0ACPU: Intel(R) Xeon(TM) CPU 3.20GHz = (3212.93-MHz K8-class CPU)=0A Origin =3D "GenuineIntel" Id =3D 0xf49 Fam= ily =3D f Model =3D 4 Stepping =3D 9=0A Features=3D0xbfebfbff=0A Features2=3D0x641d=0A AMD Features=3D0x20000800=0A = AMD Features2=3D0x1=0A TSC: P-state invariant=0A=0A =0A Any thou= ghts on how to proceed?=0A =0A Dr.=0A=0A=0A