From owner-freebsd-stable@FreeBSD.ORG Thu May 7 12:08:27 2015 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 462439AA for ; Thu, 7 May 2015 12:08:27 +0000 (UTC) Received: from mail-wi0-x22e.google.com (mail-wi0-x22e.google.com [IPv6:2a00:1450:400c:c05::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id E32321C08 for ; Thu, 7 May 2015 12:08:26 +0000 (UTC) Received: by widdi4 with SMTP id di4so239491699wid.0 for ; Thu, 07 May 2015 05:08:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=300.nl; s=tip; h=from:content-type:subject:message-id:date:to:mime-version; bh=U9zD4vukbw9yo7ye3zuT+krlXTldcpzsIFL04QhM1NE=; b=hb/9H7caAv9dPr7Z7jhN+UVDpWa1Dc3W4PHFUU/gkMcMUdsp16NYbo52aZwsUuOuLN 0gYl+W5eGgjiz+iDaVdhY2Kqbe9v/cOVC3Qwg5WT5tVVpy3oaool5Ld5PXsvKt7E/Opi PzNu2i1kswNlp1i6ncuVM8IDkNASzW/+HxqiM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:content-type:subject:message-id:date:to :mime-version; bh=U9zD4vukbw9yo7ye3zuT+krlXTldcpzsIFL04QhM1NE=; b=JX0ekGh8eF/gyFCGKWUqliczlSWwjrNHVs0vnf2B5+Vz6rszWvBmSWxUgZoF6aXyju 2gUM7XzmEO0qkzwYreHwzNQD97dJ3GZMOqrYCUdCxYWCGrX0T8s7U23O+B97GV+eLVZx qsgwZDEVAUZxEy9Kua5cS5uhND8VVTojdlYNDXoJt8pfbwORv/o8itDkg43jG+Ka0LKU ZTnunCmAmnlabre2RTXVQQPz9Su3FvfsSEPm0O/1N1XIQzde12o2p5mQNZqXLMpZ7H+9 9GDee3mX7kldx4btS5np00dMNKK4loDkZL5DfNR7EDZ1NaPv1JSGCKgiFJVl8qJn+ST0 NeOg== X-Gm-Message-State: ALoCoQkppUMtGCpOEQlcpAkfHZzy19iFBqPSwihiU0sQBJ8yzDfp5dZSatpxVdXw/LZf+QfNuihR X-Received: by 10.180.84.97 with SMTP id x1mr6000705wiy.1.1431000505220; Thu, 07 May 2015 05:08:25 -0700 (PDT) Received: from [10.2.7.215] (kantoor.transip.nl. [80.69.69.100]) by mx.google.com with ESMTPSA id e2sm3680457wij.5.2015.05.07.05.08.22 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 07 May 2015 05:08:23 -0700 (PDT) From: Johan Schuijt-Li Subject: panic: pmap active 0xfffff8001b7154b8 Message-Id: Date: Thu, 7 May 2015 14:08:21 +0200 To: freebsd-stable@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2098\)) X-Mailer: Apple Mail (2.2098) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 May 2015 12:08:27 -0000 Hi, We=E2=80=99ve been seeing (seemingly) random reboots on 10.1-RELEASE = virtual machines (KVM virtualisation) on our production servers. In an = attempt to determine what was causing this we=E2=80=99ve switched to = running a kernel with INVARIANTS enabled. This resulted for us in the = following panic: Unread portion of the kernel message buffer: panic: pmap active 0xfffff8001b7154b8 cpuid =3D 3 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame = 0xfffffe03dd1493a0 kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe03dd149450 vpanic() at vpanic+0x126/frame 0xfffffe03dd149490 kassert_panic() at kassert_panic+0x139/frame 0xfffffe03dd149500 pmap_remove_pages() at pmap_remove_pages+0x8c/frame 0xfffffe03dd1495f0 exec_new_vmspace() at exec_new_vmspace+0x16a/frame 0xfffffe03dd149650 exec_elf64_imgact() at exec_elf64_imgact+0x658/frame 0xfffffe03dd149720 kern_execve() at kern_execve+0x5e4/frame 0xfffffe03dd149a80 sys_execve() at sys_execve+0x37/frame 0xfffffe03dd149ae0 amd64_syscall() at amd64_syscall+0x25a/frame 0xfffffe03dd149bf0 Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe03dd149bf0 --- syscall (59, FreeBSD ELF64, sys_execve), rip =3D 0x80158af1a, rsp =3D = 0x7fffffffac38, rbp =3D 0x7fffffffad40 --- I=E2=80=99ve only come across one other report here (without result = unfortunate): = https://lists.freebsd.org/pipermail/freebsd-current/2014-June/050827.html = Are other people aware of this issue or working on this? I can provide access to a VM with a kernel dump and the kernel build for = extra information if needed. - Johan=