From owner-freebsd-stable@FreeBSD.ORG Thu Jan 21 18:28:33 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F41011065672 for ; Thu, 21 Jan 2010 18:28:32 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id BC1FC8FC1A for ; Thu, 21 Jan 2010 18:28:32 +0000 (UTC) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id 49E7D46B39; Thu, 21 Jan 2010 13:28:32 -0500 (EST) Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9]) by bigwig.baldwin.cx (Postfix) with ESMTPA id 67C628A026; Thu, 21 Jan 2010 13:28:31 -0500 (EST) From: John Baldwin To: Florian Smeets Date: Thu, 21 Jan 2010 12:58:40 -0500 User-Agent: KMail/1.12.1 (FreeBSD/7.2-CBSD-20091231; KDE/4.3.1; amd64; ; ) References: <4B58280C.50602@smeets.im> <201001210801.48390.jhb@freebsd.org> <4B5855C2.6000002@smeets.im> In-Reply-To: <4B5855C2.6000002@smeets.im> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <201001211258.40316.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1 (bigwig.baldwin.cx); Thu, 21 Jan 2010 13:28:31 -0500 (EST) X-Virus-Scanned: clamav-milter 0.95.1 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=4.2 tests=AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx Cc: freebsd-stable@freebsd.org Subject: Re: 7.2-STABLE page fault with kernel from 12.01.2010 / crashinfo available X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Jan 2010 18:28:33 -0000 On Thursday 21 January 2010 8:25:22 am Florian Smeets wrote: > On 1/21/10 2:01 PM, John Baldwin wrote: > > On Thursday 21 January 2010 5:10:20 am Florian Smeets wrote: > >> (kgdb) where > >> #0 doadump () at pcpu.h:196 > >> #1 0xc0525703 in boot (howto=3D260) at=20 /usr/src/sys/kern/kern_shutdown.c:418 > >> #2 0xc052590e in panic (fmt=3DVariable "fmt" is not available. > >> ) at /usr/src/sys/kern/kern_shutdown.c:574 > >> #3 0xc06f110c in trap_fatal (frame=3D0xc1f15ae4, eva=3D12) at > >> /usr/src/sys/i386/i386/trap.c:950 > >> #4 0xc06f1390 in trap_pfault (frame=3D0xc1f15ae4, usermode=3D0, eva= =3D12) at > >> /usr/src/sys/i386/i386/trap.c:863 > >> #5 0xc06f1d65 in trap (frame=3D0xc1f15ae4) at > >> /usr/src/sys/i386/i386/trap.c:541 > >> #6 0xc06d910b in calltrap () at /usr/src/sys/i386/i386/exception.s:166 > >> #7 0xc0572e48 in m_copydata (m=3D0x0, off=3D0, len=3D40, cp=3D0xc23cc= ed8 > >> "\203??b??\237\f)h?M\220\224?\023?\205K(e??s?\"???k?oQ?~\223\020g\030") > >> at /usr/src/sys/kern/uipc_mbuf.c:815 > >> #8 0xc05f8b28 in ip_forward (m=3D0xc23dc900, srcrt=3D0) at > >> /usr/src/sys/netinet/ip_input.c:1307 > >> #9 0xc05fa30c in ip_input (m=3D0xc23dc900) at > >> /usr/src/sys/netinet/ip_input.c:609 > >> #10 0xc05c83d5 in netisr_dispatch (num=3D2, m=3D0xc23dc900) at > >> /usr/src/sys/net/netisr.c:185 > >> #11 0xc05bf581 in ether_demux (ifp=3D0xc20a4800, m=3D0xc23dc900) at > >> /usr/src/sys/net/if_ethersubr.c:834 > >> #12 0xc05bf973 in ether_input (ifp=3D0xc20a4800, m=3D0xc23dc900) at > >> /usr/src/sys/net/if_ethersubr.c:692 > >> #13 0xc04b8749 in sis_rxeof (sc=3D0xc2093800) at > >> /usr/src/sys/dev/sis/if_sis.c:1476 > >> #14 0xc04b8973 in sis_intr (arg=3D0xc2093800) at > >> /usr/src/sys/dev/sis/if_sis.c:1667 > >> #15 0xc050344b in ithread_loop (arg=3D0xc20ab410) at > >> /usr/src/sys/kern/kern_intr.c:1126 > >> #16 0xc04ffe36 in fork_exit (callout=3D0xc05032a0, > >> arg=3D0xc20ab410, frame=3D0xc1f15d38) at /usr/src/sys/kern/kern_fork.c= :811 > >> #17 0xc06d9180 in fork_trampoline () at > >> /usr/src/sys/i386/i386/exception.s:271 > >> (kgdb) list *0xc0572e48 > >> 0xc0572e48 is in m_copydata (libkern.h:61). > >> 56 static __inline int imax(int a, int b) { return (a> b ? a : b); } > >> 57 static __inline int imin(int a, int b) { return (a< b ? a : b); } > >> 58 static __inline long lmax(long a, long b) { return (a> b ? a : b);= } > >> 59 static __inline long lmin(long a, long b) { return (a< b ? a : b);= } > >> 60 static __inline u_int max(u_int a, u_int b) { return (a> b ? a : b= );=20 } > >> 61 static __inline u_int min(u_int a, u_int b) { return (a< b ? a : b= );=20 } > >> 62 static __inline quad_t qmax(quad_t a, quad_t b) { return (a> b ? a= : > >> b); } > >> 63 static __inline quad_t qmin(quad_t a, quad_t b) { return (a< b ? a= : > >> b); } > >> 64 static __inline u_long ulmax(u_long a, u_long b) { return (a> b ? a > >> : b); } > >> 65 static __inline u_long ulmin(u_long a, u_long b) { return (a< b ? a > >> : b); } > >> (kgdb) frame 7 > >> #7 0xc0572e48 in m_copydata (m=3D0x0, off=3D0, len=3D40, cp=3D0xc23cc= ed8 > >> "\203??b??\237\f)h?M\220\224?\023?\205K(e??s?\"???k?oQ?~\223\020g\030") > >> at /usr/src/sys/kern/uipc_mbuf.c:815 > >> 815 count =3D min(m->m_len - off, len); > >> (kgdb) l > >> 810 off -=3D m->m_len; > >> 811 m =3D m->m_next; > >> 812 } > >> 813 while (len> 0) { > >> 814 KASSERT(m !=3D NULL, ("m_copydata, length> size of mbuf chain")= ); > > > > I think you would have hit this assertion if INVARIANTS were enabled. = Can=20 you > > go up to frame 8 and do an 'l'? Maybe 'p *m' as well? > > >=20 > Sure, thanks for taking a look John! >=20 > (kgdb) frame 8 > #8 0xc05f8b28 in ip_forward (m=3D0xc23dc900, srcrt=3D0) at=20 > /usr/src/sys/netinet/ip_input.c:1307 > 1307 m_copydata(m, 0, mcopy->m_len, mtod(mcopy, caddr_t)); > (kgdb) l > 1302 mcopy =3D NULL; > 1303 } > 1304 if (mcopy !=3D NULL) { > 1305 mcopy->m_len =3D min(ip->ip_len, M_TRAILINGSPACE(mcopy)); > 1306 mcopy->m_pkthdr.len =3D mcopy->m_len; > 1307 m_copydata(m, 0, mcopy->m_len, mtod(mcopy, caddr_t)); > 1308 } > 1309=09 > 1310 #ifdef IPSTEALTH > 1311 if (!ipstealth) { > (kgdb) p *m > $1 =3D {m_hdr =3D {mh_next =3D 0x0, mh_nextpkt =3D 0x0, mh_data =3D 0xc27= 1e80e=20 > "E\020", mh_len =3D 164, mh_flags =3D 3, mh_type =3D 1, pad =3D "\000"}, = M_dat =3D=20 > {MH =3D {MH_pkthdr =3D {rcvif =3D 0xc20a4800, header =3D 0x0, len =3D 164= ,=20 > csum_flags =3D 3072, > csum_data =3D 65535, tso_segsz =3D 0, ether_vtag =3D 0, tags =3D= =20 > {slh_first =3D 0xc35bc380}}, MH_dat =3D {MH_ext =3D {ext_buf =3D 0xc271e8= 00 "",=20 > ext_free =3D 0, ext_args =3D 0x0, ext_size =3D 2048, ref_cnt =3D 0xc2703a= b4,=20 > ext_type =3D 6}, > MH_databuf =3D=20 > "\000?q?\000\000\000\000\000\000\000\000\000\b\000\000?:p? \006\000\000\000dL?\t<+?\202\200\020=20 > O/\207\000\000\001\001\b\n-?b\230qms?\000\000\004\001?l?\000\000\001%r??? \200\000????\034?Ot?\b?{sr\000\034org.jboss.mq.ConnectionToken?\b=DF=BC&? \237N\002\000\005I\000\004hashZ\000\asameJVML\000\bclientIDt\000\022Ljava/l= \000\220\032Ae\207\000\002? 36@\210d\021\000\001?\001B\000!E\000\001@bV\000\000@2\032$W\213\n\034"...}}= ,=20 >=20 > M_databuf =3D=20 > "\000H\n?\000\000\000\000?\000\000\000\000\f\000\000?? \000\000\000\000\000\000\200?[?\000?q? \000\000\000\000\000\000\000\000\000\b\000\000?:p?\006\000\000\000dL?\t<+? \202\200\020=20 > O/\207\000\000\001\001\b\n-?b\230qms?\000\000\004\001?l?\000\000\001%r??? \200\000????\034?Ot?\b?{sr\000\034org.jboss.mq.ConnectionToken?\b=DF=BC&? \237N\002\000\005I\000\004hashZ\000\asameJVML\000\bclientIDt\000\022Ljava/l= \000\220\032Ae\207\000\002? 3"...}} Ok, can you do 'p *m_copy'? =2D-=20 John Baldwin