From owner-freebsd-hackers@freebsd.org Tue Jun 21 00:06:39 2016 Return-Path: Delivered-To: freebsd-hackers@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 BF296AC49F0 for ; Tue, 21 Jun 2016 00:06:39 +0000 (UTC) (envelope-from otacilio.neto@bsd.com.br) Received: from mail-qk0-x232.google.com (mail-qk0-x232.google.com [IPv6:2607:f8b0:400d:c09::232]) (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 81F422B58 for ; Tue, 21 Jun 2016 00:06:39 +0000 (UTC) (envelope-from otacilio.neto@bsd.com.br) Received: by mail-qk0-x232.google.com with SMTP id a186so460072qkf.0 for ; Mon, 20 Jun 2016 17:06:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsd.com.br; s=capeta; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding; bh=yQVzk2+4SBJqxNiYq6hpp98vl6/qiW7HBAod0OcyPn4=; b=gDpB0qagYy5cvIQbY3extb7OfCIVjpeXQoqK/XCAtz8xX3hiC7JjOLLs68A/1tTZ50 dOlW2TaFEn4Ra/aMgpw/d/FWya65j+/qIm4Mri/3XE5HwjMQYOyeYRCChR0I+gvAJlqq E1lhvizq2VGUXvwUrBYiNl/ZbIXK2RgLTuWGk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=yQVzk2+4SBJqxNiYq6hpp98vl6/qiW7HBAod0OcyPn4=; b=kS7yNhIX5HYtXr8rmxMMR6cHpreryYC0X7Bx8BETP9eN9YY676eR3epNJ7XcOHYPWS H+FjsXcb2KXwJOeleL0VzcKJS/or6FMjW3p3PnsB+IAcYcx8KQ4N++GEJTcyc3UNGFTp Dh7VUkvipQiaS1u3Li900QZXeVQ5c1ADO90xHTgRFfnPSvR11sBCeDQ6mPbSUZyQWdHZ afRWaiRMkLE8+B6M0dFC2M4hzRbByfBGDZtNqMdzDiv0fRTqgh7Y/k3X+byAKM09bGrV jhzB022gNjXj4y17pg3bSKnUIgu8o+L5v/Qt4sG1aR6QQVji1zKBOl+2H0JW8UGCKshB l6gw== X-Gm-Message-State: ALyK8tK4v2gvVmUcXi+VFwhI2si4JQQ5Vp2lWtqJheTahYb5lbff73I8h66IP/yaiVUkwg== X-Received: by 10.55.203.202 with SMTP id u71mr24913601qkl.12.1466467598271; Mon, 20 Jun 2016 17:06:38 -0700 (PDT) Received: from [192.168.0.18] ([187.60.94.34]) by smtp.googlemail.com with ESMTPSA id a198sm21990458qkc.24.2016.06.20.17.06.36 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 20 Jun 2016 17:06:37 -0700 (PDT) Subject: Re: (beagleboneblack/urtwn) Kernel page fault with the following non-sleepable locks held To: "freebsd-arm@freebsd.org" , freebsd-hackers@freebsd.org References: <5e322d5a-8c42-8e69-f3c4-e607d40e8724@bsd.com.br> From: =?UTF-8?B?T3RhY8OtbGlv?= Message-ID: <1a55f000-eff9-31db-f420-e00278c4c054@bsd.com.br> Date: Mon, 20 Jun 2016 21:06:15 -0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 MIME-Version: 1.0 In-Reply-To: <5e322d5a-8c42-8e69-f3c4-e607d40e8724@bsd.com.br> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Jun 2016 00:06:39 -0000 Em 19/06/2016 18:47, Otacílio escreveu: > Em 19/06/2016 18:40, Otacílio escreveu: >> I was installing netperf on a fresh FreeBSD-ALPHA3 >> >> FreeBSD beaglebone 11.0-ALPHA3 FreeBSD 11.0-ALPHA3 #0 r301846: Mon >> Jun 13 19:54:27 BRT 2016 >> ota@nostromo:/root/crochet/work/obj/arm.armv6/usr/src/sys/BEAGLEBONE-DEBUG >> arm >> >> on BeagleboneBlack using wrtwn when I got this kernel panic: >> >> root@beaglebone:/usr/home/ota # pkg install netperf >> Updating FreeBSD repository catalogue... >> Fetching meta.txz: 100% 944 B 0.9kB/s 00:01 >> Fetching packagesite.txz: 100% 4 MiB 46.0kB/s 01:42 >> Processing entries: 6%lock order reversal: >> 1st 0xc30b35d4 syncer (syncer) @ /usr/src/sys/kern/vfs_subr.c:2048 >> 2nd 0xc319d6f4 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2498 >> stack backtrace: >> Processing entries: 58%Kernel page fault with the following >> non-sleepable locks held: >> exclusive sleep mutex tcp_sc_head (tcp_sc_head) r = 0 (0xc2f9d520) >> locked @ /usr/src/sys/netinet/tcp_syncache.c:494 >> shared rw tcp (tcp) r = 0 (0xc08ef348) locked @ >> /usr/src/sys/netinet/tcp_input.c:1034 >> exclusive rw tcpinp (tcpinp) r = 0 (0xc31ab494) locked @ >> /usr/src/sys/netinet/in_pcb.c:1964 >> stack backtrace: >> Fatal kernel mode data abort: 'Alignment Fault' on read >> trapframe: 0xdcfe58a8 >> FSR=00000001, FAR=c2e7187a, spsr=60000013 >> r0 =c08e7988, r1 =00000004, r2 =c06fa3ad, r3 =000007b6 >> r4 =dcfe5a10, r5 =dcfe5b28, r6 =c2e71876, r7 =c2f9d520 >> r8 =c2f9d520, r9 =c2e71876, r10=dcfe5b28, r11=dcfe5970 >> r12=00000000, ssp=dcfe5938, slr=c2d34370, pc =c053d8e8 >> >> [ thread pid 13 tid 100036 ] >> Stopped at syncookie_lookup+0x38: ldmib r6, {r1-r2} >> db> >> >> >> []'s >> >> -Otacílio >> > The kernel panic is totally reproducible. I need only do a ssh in the > beaglebone using ptty on windows or ssh on freebsd and the kernel > panic is raised. > > FreeBSD/arm (beaglebone) (ttyu0) > > login: Kernel page fault with the following non-sleepable locks held: > exclusive sleep mutex tcp_sc_head (tcp_sc_head) r = 0 (0xc2f95480) > locked @ /usr/src/sys/netinet/tcp_syncache.c:494 > shared rw tcp (tcp) r = 0 (0xc08ef348) locked @ > /usr/src/sys/netinet/tcp_input.c:1034 > exclusive rw tcpinp (tcpinp) r = 0 (0xc341e494) locked @ > /usr/src/sys/netinet/in_pcb.c:1964 > stack backtrace: > Fatal kernel mode data abort: 'Alignment Fault' on read > trapframe: 0xdcfe58a8 > FSR=00000001, FAR=c2e7807a, spsr=60000013 > r0 =c08e7988, r1 =00000004, r2 =c06fa3ad, r3 =000007b6 > r4 =dcfe5a10, r5 =dcfe5b28, r6 =c2e78076, r7 =c2f95480 > r8 =c2f95480, r9 =c2e78076, r10=dcfe5b28, r11=dcfe5970 > r12=00000000, ssp=dcfe5938, slr=c2d34370, pc =c053d8e8 > > [ thread pid 13 tid 100036 ] > Stopped at syncookie_lookup+0x38: ldmib r6, {r1-r2} > db> > FreeBSD11-ALPHA4 shows the same behavior. The only thing that I need to raise the fault is ssh in the beaglebone. root@beaglebone:~ # uname -a FreeBSD beaglebone 11.0-ALPHA4 FreeBSD 11.0-ALPHA4 #0 r301975: Fri Jun 17 13:32:55 UTC 2016 root@releng2.nyi.freebsd.org:/usr/obj/arm.armv6/usr/src/sys/BEAGLEBONE arm root@beaglebone:~ # Kernel page fault with the following non-sleepable locks held: exclusive sleep mutex tcp_sc_head (tcp_sc_head) r = 0 (0xc2f98740) locked @ /usr/src/sys/netinet/tcp_syncache.c:494 shared rw tcp (tcp) r = 0 (0xc08ef348) locked @ /usr/src/sys/netinet/tcp_input.c:1034 exclusive rw tcpinp (tcpinp) r = 0 (0xc33e4494) locked @ /usr/src/sys/netinet/in_pcb.c:1964 stack backtrace: Fatal kernel mode data abort: 'Alignment Fault' on read trapframe: 0xdcfe58c0 FSR=00000001, FAR=c2e7a07a, spsr=60000013 r0 =c08e7988, r1 =00000004, r2 =c06fabe6, r3 =000007b6 r4 =dcfe5a28, r5 =dcfe5b40, r6 =c2e7a076, r7 =c2f98740 r8 =c2f98740, r9 =c2e7a076, r10=dcfe5b40, r11=dcfe5988 r12=00000000, ssp=dcfe5950, slr=c2d33370, pc =c053df7c [ thread pid 13 tid 100036 ] Stopped at syncookie_lookup+0x38: ldmib r6, {r1-r2} db>