From owner-freebsd-current@freebsd.org Sun Sep 16 00:16:44 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BEF9A108E270 for ; Sun, 16 Sep 2018 00:16:44 +0000 (UTC) (envelope-from imb@protected-networks.net) Received: from mail.protected-networks.net (mail.protected-networks.net [202.12.127.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mail.protected-networks.net", Issuer "Protected Networks CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 532EB7657C; Sun, 16 Sep 2018 00:16:44 +0000 (UTC) (envelope-from imb@protected-networks.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d= protected-networks.net; h=content-transfer-encoding :content-language:content-type:content-type:in-reply-to :mime-version:user-agent:date:date:message-id:from:from :references:subject:subject; s=201508; t=1537056995; bh=FtVyRDjO m9AhBHXMIpq5RjrRvZO11QgKf9izOQRfrZk=; b=atOLldwd+fEmRVJd52TzRMgF y61qlVDydHcdd3KAJ5LGf7BW/fdOJbzDS1WtLXsA8WESF50d8WO7PpHQPcENVPZ0 pFJU732CSbo3kT7hggzwlzpDqciLKXWErIpwi53Fp+nRrm+496P4QfDk4g+UFg6g 6KOPY2QUK1UDdg9jfUQ= Received: from toshi.auburn.protected-networks.net (toshi.auburn.protected-networks.net [192.168.1.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) (Authenticated sender: imb@mail.protected-networks.net) by mail.protected-networks.net (Postfix) with ESMTPSA id 4A6B8C63C; Sat, 15 Sep 2018 20:16:35 -0400 (EDT) Subject: Re: udp6: Page fault panics To: freebsd-current@FreeBSD.org, Larry Rosenman References: <20180916000455.isqioezu6oovhjzg@ler-imac.local> From: Michael Butler Openpgp: preference=signencrypt Message-ID: Date: Sat, 15 Sep 2018 20:16:34 -0400 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.0.1 MIME-Version: 1.0 In-Reply-To: <20180916000455.isqioezu6oovhjzg@ler-imac.local> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.27 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, 16 Sep 2018 00:16:45 -0000 On 9/15/18 8:04 PM, Larry Rosenman wrote: > I've got 2 of these: > > Fatal trap 12: page fault while in kernel mode > cpuid = 4; apic id = 04 > fault virtual address = 0x7c > fault code = supervisor read data, page not present > instruction pointer = 0x20:0xffffffff80631428 > stack pointer = 0x28:0xfffffe00ca17c440 > frame pointer = 0x28:0xfffffe00ca17c480 > 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 = 1225 (isc-worker0003) > trap number = 12 > panic: page fault > cpuid = 4 > time = 1537050918 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00ca17c0f0 > vpanic() at vpanic+0x1a3/frame 0xfffffe00ca17c150 > panic() at panic+0x43/frame 0xfffffe00ca17c1b0 > trap_fatal() at trap_fatal+0x35f/frame 0xfffffe00ca17c200 > trap_pfault() at trap_pfault+0x49/frame 0xfffffe00ca17c260 > trap() at trap+0x2ba/frame 0xfffffe00ca17c370 > calltrap() at calltrap+0x8/frame 0xfffffe00ca17c370 > --- trap 0xc, rip = 0xffffffff80631428, rsp = 0xfffffe00ca17c440, rbp = 0xfffffe00ca17c480 --- > selectroute() at selectroute+0x198/frame 0xfffffe00ca17c480 > in6_selectroute_fib() at in6_selectroute_fib+0xf/frame 0xfffffe00ca17c4a0 > ip6_output() at ip6_output+0xfd7/frame 0xfffffe00ca17c710 > udp6_send() at udp6_send+0x720/frame 0xfffffe00ca17c8d0 > sosend_dgram() at sosend_dgram+0x346/frame 0xfffffe00ca17c930 > kern_sendit() at kern_sendit+0x201/frame 0xfffffe00ca17c9d0 > sendit() at sendit+0x19e/frame 0xfffffe00ca17ca20 > sys_sendmsg() at sys_sendmsg+0x61/frame 0xfffffe00ca17ca80 > amd64_syscall() at amd64_syscall+0x272/frame 0xfffffe00ca17cbb0 > fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe00ca17cbb0 > --- syscall (28, FreeBSD ELF64, sys_sendmsg), rip = 0x800be5a9a, rsp = 0x7fffdf9fa468, rbp = 0x7fffdf9fa4a0 -- > - > Uptime: 35s [ .. snip .. ] This is likely another instance of https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230950 I had similar, seemingly random panics on a nameserver I run and the only workaround I have so far is to revert SVNs r338257 and r338306 :-( imb