From owner-freebsd-current@freebsd.org Sun Jul 10 01:30:03 2016 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 4EF9EB83E2D for ; Sun, 10 Jul 2016 01:30:03 +0000 (UTC) (envelope-from mmacy@nextbsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 3D2681EC2 for ; Sun, 10 Jul 2016 01:30:03 +0000 (UTC) (envelope-from mmacy@nextbsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 3C7F2B83E2C; Sun, 10 Jul 2016 01:30:03 +0000 (UTC) Delivered-To: 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 3C2ABB83E2B for ; Sun, 10 Jul 2016 01:30:03 +0000 (UTC) (envelope-from mmacy@nextbsd.org) Received: from sender163-mail.zoho.com (sender163-mail.zoho.com [74.201.84.163]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2F5621EC1 for ; Sun, 10 Jul 2016 01:30:02 +0000 (UTC) (envelope-from mmacy@nextbsd.org) Received: from mail.zoho.com by mx.zohomail.com with SMTP id 1468114200826795.4365919257299; Sat, 9 Jul 2016 18:30:00 -0700 (PDT) Date: Sat, 09 Jul 2016 18:30:00 -0700 From: Matthew Macy To: "Andrey Chernov" Cc: "current@freebsd.org" Message-ID: <155d26ce8c4.12248bbba219469.8811983805604406181@nextbsd.org> In-Reply-To: <8c432d68-a3c8-2f39-8429-f1fe920d002b@freebsd.org> References: <378f847e-3257-19f0-2cf8-cd6319db5e06@freebsd.org> <8c432d68-a3c8-2f39-8429-f1fe920d002b@freebsd.org> Subject: Re: Recent -current stable panic at later boot stage MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Priority: Medium User-Agent: Zoho Mail X-Mailer: Zoho Mail X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.22 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: Sun, 10 Jul 2016 01:30:03 -0000 ---- On Sat, 09 Jul 2016 18:19:57 -0700 Andrey Chernov wrote ---- > BTW, it never happens with 11-ALPHA3 even with world build for 12. > > On 09.07.2016 22:06, Andrey Chernov wrote: > > SCHED_ULE used. I have textdump only. Interesting parts: > > <118>Starting syslogd. > > kernel trap 9 with interrupts disabled > > > > Fatal trap 9: general protection fault while in kernel mode > > cpuid = 7; apic id = 07 > > instruction pointer = 0x20:0xffffffff806b2585 > > stack pointer = 0x28:0xfffffe022ccce8d0 > > frame pointer = 0x28:0xfffffe022ccce950 > > code segment = base 0x0, limit 0xfffff, type 0x1b > > = DPL 0, pres 1, long 1, def32 0, gran 1 > > processor eflags = resume, IOPL = 0 > > current process = 10 (idle: cpu7) > > > > It happens at amd64/amd64/cpu_switch.S:ld_ldt: lldt %ax > > > > db> bt > > > > Tracing pid 10 tid 100009 td 0xfffff80002292000 > > ld_ldt() at ld_ldt/frame 0xfffffe022ccce8e0 > > sched_switch() at sched_switch+0x51d/frame 0xfffffe022ccce950 > > mi_switch() at mi_switch+0x156/frame 0xfffffe022ccce980 > > sched_idletd() at sched_idletd+0xf9/frame 0xfffffe022cccea70 > > fork_exit() at fork_exit+0x84/frame 0xfffffe022ccceab0 > > fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe022ccceab0 > > --- trap 0, rip = 0, rsp = 0, rbp = 0 --- Have their been no other stability issues on this machine? At first glance it looks like the ldt got corrupted. Is there no way to inspect that? -M