From owner-freebsd-current@freebsd.org Mon Nov 20 02:19:21 2017 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id B9D45DDDAEF for ; Mon, 20 Nov 2017 02:19:21 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: from asp.reflexion.net (outbound-mail-210-112.reflexion.net [208.70.210.112]) (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 6BD9C6BE86 for ; Mon, 20 Nov 2017 02:19:21 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: (qmail 25781 invoked from network); 20 Nov 2017 01:52:40 -0000 Received: from unknown (HELO mail-cs-01.app.dca.reflexion.local) (10.81.19.1) by 0 (rfx-qmail) with SMTP; 20 Nov 2017 01:52:40 -0000 Received: by mail-cs-01.app.dca.reflexion.local (Reflexion email security v8.40.3) with SMTP; Sun, 19 Nov 2017 20:52:40 -0500 (EST) Received: (qmail 494 invoked from network); 20 Nov 2017 01:52:40 -0000 Received: from unknown (HELO iron2.pdx.net) (69.64.224.71) by 0 (rfx-qmail) with (AES256-SHA encrypted) SMTP; 20 Nov 2017 01:52:40 -0000 Received: from [192.168.1.25] (c-76-115-7-162.hsd1.or.comcast.net [76.115.7.162]) by iron2.pdx.net (Postfix) with ESMTPSA id CA983EC7E18; Sun, 19 Nov 2017 17:52:39 -0800 (PST) From: Mark Millard Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: head -r325997: Fatal trap 12: page fault while in kernel mode (during a buildworld, virtualbox guest context) Message-Id: <2A312919-EF66-4FC3-85E4-A796315DB978@dsl-only.net> Date: Sun, 19 Nov 2017 17:52:39 -0800 To: FreeBSD Current , freebsd-amd64@freebsd.org X-Mailer: Apple Mail (2.3273) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.25 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: Mon, 20 Nov 2017 02:19:21 -0000 Attempting a dump failed. I'm afraid all for information is the below. The kernel was a non-debug kernel (with debug information). The following is hand typed from a screen shot: Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0xffffff53f000e2b0 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80f2b11e stack pointer = 0x0:0xfffffe01aeb28970 frame pointer = 0x0:0xfffffe01aeb289f0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 20 (pagedaemon) [ thread pid 20 tid 100089 ] Stopped at pmap_ts_referenced+0x72e: movq (%rcx,rdi,8),%rbx bd > bt Tracing pid 20 tid 100089 td 0xfffff80003eb3560 pmap_ts_referenced() at pmap_ts_referenced_0x72e/frame 0xfffffe01aeb289f0 vm_pageout() at vm_pageout+0xdeb/frame 0xfffffe01aeb28ab0 fork_exit() at fork_exit+0x82/frame 0xfffffe01aeb28ab0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe01aeb28ab0 --- trap 0, rip = 0, rsp = 0, rpb = 0 --- db> The prior (cross) buildworld buildkernel had completed fine. Until yesterday, I'd been running -r325700 or before and had not seen such an issue ever before. I'd been using the virtualbox version for a while before this as well. === Mark Millard markmi at dsl-only.net