From owner-freebsd-hackers@FreeBSD.ORG Fri Dec 19 19:42:17 2014 Return-Path: Delivered-To: freebsd-hackers@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 45D6E124; Fri, 19 Dec 2014 19:42:17 +0000 (UTC) Received: from mail.madpilot.net (grunt.madpilot.net [78.47.145.38]) (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 EE2161BF6; Fri, 19 Dec 2014 19:42:15 +0000 (UTC) Received: from mail (mail [192.168.254.3]) by mail.madpilot.net (Postfix) with ESMTP id 3k40nx2j4SzZrR; Fri, 19 Dec 2014 20:41:57 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=madpilot.net; h= content-transfer-encoding:content-type:content-type:in-reply-to :references:subject:subject:mime-version:user-agent:from:from :date:date:message-id:received:received; s=mail; t=1419018115; x=1420832516; bh=edwPiOcvg4YBsAi8A8HixkUo3rQiAXDl7JGr7fNNC8g=; b= rbnpRJLgqyq+/bF07wvS7Q/GTFY3jAq3n/HtGiqpSzFcCe58mHlvWOs7pqsH0x+u QG5o6lLHcdeHwunAbDop7j6XVy2uwovNv14sRmCB+2gIdVaOvdhqwUk+1BHeongN q7rLWtw7PzYnddtcqkoCqmtkq1GynNjmELDVGgOrqMc= Received: from mail.madpilot.net ([192.168.254.3]) by mail (mail.madpilot.net [192.168.254.3]) (amavisd-new, port 10024) with ESMTP id 0CxCF4IWULzJ; Fri, 19 Dec 2014 20:41:55 +0100 (CET) Received: from tommy.madpilot.net (micro.madpilot.net [88.149.173.206]) by mail.madpilot.net (Postfix) with ESMTPSA; Fri, 19 Dec 2014 20:41:55 +0100 (CET) Message-ID: <54947F82.3090603@madpilot.net> Date: Fri, 19 Dec 2014 20:41:54 +0100 From: Guido Falsi User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Adrian Chadd , Andrey Fesenko , Gleb Smirnoff Subject: Re: lighttpd crush the system after r274463 References: In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: "freebsd-hackers@freebsd.org" , freebsd-current X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Dec 2014 19:42:17 -0000 On 12/19/14 19:28, Adrian Chadd wrote: > Hm, glebius? Any ideas? > [...] >> Fatal trap 12: page fault while in kernel mode >> cpuid = 0; apic id = 00 >> fault virtual address = 0x8 >> fault code = supervisor read data, page not present >> instruction pointer = 0x20:0xffffffff809d44bd >> stack pointer = 0x28:0xfffffe00f77df700 >> frame pointer = 0x28:0xfffffe00f77df730 >> 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 = 658 (lighttpd) >> [ thread pid 658 tid 100067 ] >> Stopped at sbappendstream_locked+0x2d: cmpq $0,0x8(%r14) >> db> bt >> Tracing pid 658 tid 100067 td 0xfffff8000ba3e940 >> sbappendstream_locked() at sbappendstream_locked+0x2d/frame 0xfffffe00f77df730 >> sbappendstream() at sbappendstream+0x3c/frame 0xfffffe00f77df760 >> tcp_usr_send() at tcp_usr_send+0x1ab/frame 0xfffffe00f77df7e0 >> sosend_generic() at sosend_generic+0x40b/frame 0xfffffe00f77df8a0 >> soo_write() at soo_write+0x42/frame 0xfffffe00f77df8d0 >> dofilewrite() at dofilewrite+0x88/frame 0xfffffe00f77df920 >> kern_writev() at kern_writev+0x68/frame 0xfffffe00f77df970 >> sys_writev() at sys_writev+0x36/frame 0xfffffe00f77df9a0 >> amd64_syscall() at amd64_syscall+0x25a/frame 0xfffffe00f77dfab0 >> Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe00f77dfab0 >> --- syscall (121, FreeBSD ELF64, sys_writev), rip = 0x80164cb8a, rsp = >> 0x7fffffffa658, rbp = 0x7fffffffe6 >> c0 --- Maybe I'm wrong but I see some similarities with what I reported with virtualbox. Bug 195822 has been filed about that. All information I have is there. Glebius already knows. -- Guido Falsi