From owner-freebsd-current@FreeBSD.ORG Mon Feb 2 18:22:37 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 A70546C0 for ; Mon, 2 Feb 2015 18:22:37 +0000 (UTC) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.95.76.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "troutmask", Issuer "troutmask" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 8ADAEDB0 for ; Mon, 2 Feb 2015 18:22:37 +0000 (UTC) Received: from troutmask.apl.washington.edu (localhost [127.0.0.1]) by troutmask.apl.washington.edu (8.14.9/8.14.9) with ESMTP id t12IMaUL066882 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 2 Feb 2015 10:22:36 -0800 (PST) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost) by troutmask.apl.washington.edu (8.14.9/8.14.9/Submit) id t12IMa13066881; Mon, 2 Feb 2015 10:22:36 -0800 (PST) (envelope-from sgk) Date: Mon, 2 Feb 2015 10:22:36 -0800 From: Steve Kargl To: Eric van Gyzen Subject: Re: panic in sys_fstatat (?) Message-ID: <20150202182236.GA66843@troutmask.apl.washington.edu> References: <20150202175940.GA898@troutmask.apl.washington.edu> <54CFBDA7.8050309@vangyzen.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <54CFBDA7.8050309@vangyzen.net> User-Agent: Mutt/1.5.23 (2014-03-12) 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 18:22:37 -0000 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 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 -- Steve