From owner-freebsd-current@FreeBSD.ORG Mon Feb 2 18:29:47 2015 Return-Path: Delivered-To: freebsd-current@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 C44C999E for ; Mon, 2 Feb 2015 18:29:47 +0000 (UTC) Received: from smtp.vangyzen.net (hotblack.vangyzen.net [199.48.133.146]) by mx1.freebsd.org (Postfix) with ESMTP id 8E71AE09 for ; Mon, 2 Feb 2015 18:29:47 +0000 (UTC) Received: from marvin.lab.vangyzen.net (c-24-125-214-90.hsd1.va.comcast.net [24.125.214.90]) by smtp.vangyzen.net (Postfix) with ESMTPSA id 6DEC756467; Mon, 2 Feb 2015 12:29:46 -0600 (CST) Message-ID: <54CFC219.9040001@vangyzen.net> Date: Mon, 02 Feb 2015 13:29:45 -0500 From: Eric van Gyzen User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.0 MIME-Version: 1.0 To: Steve Kargl Subject: Re: panic in sys_fstatat (?) References: <20150202175940.GA898@troutmask.apl.washington.edu> <54CFBDA7.8050309@vangyzen.net> <20150202182236.GA66843@troutmask.apl.washington.edu> In-Reply-To: <20150202182236.GA66843@troutmask.apl.washington.edu> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 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, 02 Feb 2015 18:29:48 -0000 On 02/02/2015 13:22, Steve Kargl wrote: > On Mon, Feb 02, 2015 at 01:10:47PM -0500, Eric van Gyzen wrote: >> On 02/02/2015 12:59, Steve Kargl wrote: >>> (kgdb) #0 doadump (textdump=Unhandled dwarf expression opcode 0x93 >>> ) at pcpu.h:219 >>> #1 0xffffffff80559f47 in kern_reboot (howto=260) >>> at /usr/src/sys/kern/kern_shutdown.c:448 >>> #2 0xffffffff8055a3b0 in panic (fmt=) >>> at /usr/src/sys/kern/kern_shutdown.c:747 >>> #3 0xffffffff807a85c0 in trap_fatal (frame=, >>> eva=) at /usr/src/sys/amd64/amd64/trap.c:861 >>> #4 0xffffffff807a8221 in trap (frame=) >>> at /usr/src/sys/amd64/amd64/trap.c:201 >>> #5 0xffffffff8078d843 in calltrap () >>> at /usr/src/sys/amd64/amd64/exception.S:235 >>> #6 0xffffffff80754567 in ufs_getattr (ap=) >>> at /usr/src/sys/ufs/ufs/ufs_vnops.c:463 >>> #7 0xffffffff808074fa in VOP_GETATTR_APV (vop=, >>> a=) at vnode_if.c:731 >>> #8 0xffffffff80607e62 in vn_stat (vp=0xfffff80088086000, >>> sb=0xfffffe0469290710, active_cred=0xfffff8000b07d800, file_cred=0x1, >>> td=0xfffff801b5063000) at vnode_if.h:309 >>> #9 0xffffffff806017e4 in kern_statat (td=0xfffff801b5063000, >>> flag=, fd=, >>> path=, pathseg=UIO_USERSPACE, >>> sbp=0xfffffe04692908a0, hook=0xfefff80034ba0700) >>> at /usr/src/sys/kern/vfs_syscalls.c:2241 >>> #10 0xffffffff80601acc in sys_fstatat (td=0xfffff802dbc03dc8, >>> uap=0xfffffe04692909c0) at /usr/src/sys/kern/vfs_syscalls.c:2215 >>> #11 0xffffffff807a8db9 in amd64_syscall (td=0xfffff801b5063000, traced=0) >>> at subr_syscall.c:133 >>> #12 0xffffffff8078db2b in Xfast_syscall () >>> at /usr/src/sys/amd64/amd64/exception.S:395 >> I probably can't help debug this, but someone who _can_ will likely ask >> for this from kgdb: >> >> f 6 >> x/i $rip >> info reg > (kgdb) f 6 > #6 0xffffffff80754567 in ufs_getattr (ap=) > at /usr/src/sys/ufs/ufs/ufs_vnops.c:463 > 463 vap->va_atime.tv_sec = ip->i_din2->di_atime; > (kgdb) x/i $rip > 0xffffffff80754567 : mov 0x20(%rax),%rax > (kgdb) info reg > rax 0xfefff80034ba0700 -72066389246343424 This looks very similar to the GPF panic you reported a week ago. A single bit has been flipped in the %rax register. It should begin with 0xff, not 0xfe. I would strongly suspect that you have some failing hardware, most commonly memory. > rbx 0xfffff802dbc03dc8 -8783816278584 > rcx 0x1 1 > rdx 0xfffff8000b07d800 -8795907958784 > rsi 0xfffffe0469290688 -2180079090040 > rdi 0xfffff802dbc03dc8 -8783816278584 > rbp 0xfffffe04692905a0 0xfffffe04692905a0 > rsp 0xfffffe0469290570 0xfffffe0469290570 > r8 0xfffff801b5063000 -8788760973312 > r9 0x33 51 > r10 0x0 0 > r11 0x0 0 > r12 0xfffff801b5063000 -8788760973312 > r13 0xfffffe04692905e0 -2180079090208 > r14 0xfffff80088086000 -8793810771968 > r15 0xfffff800880860b0 -8793810771792 > rip 0xffffffff80754567 0xffffffff80754567 > eflags 0x10202 66050 > cs 0x20 32 > ss 0x28 40 > ds 0x0 0 > es 0x0 0 > fs 0x0 0 > gs 0x0 0 >