From owner-freebsd-net@FreeBSD.ORG Wed May 24 01:58:45 2006 Return-Path: X-Original-To: net@FreeBSD.org Delivered-To: freebsd-net@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0BCC016AB75 for ; Wed, 24 May 2006 01:58:45 +0000 (UTC) (envelope-from kris@obsecurity.org) Received: from elvis.mu.org (elvis.mu.org [192.203.228.196]) by mx1.FreeBSD.org (Postfix) with ESMTP id 74ED043D88 for ; Wed, 24 May 2006 01:58:27 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196]) by elvis.mu.org (Postfix) with ESMTP id 7ABD51A4E82 for ; Tue, 23 May 2006 18:58:27 -0700 (PDT) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 959FF5134B; Tue, 23 May 2006 21:58:26 -0400 (EDT) Date: Tue, 23 May 2006 21:58:26 -0400 From: Kris Kennaway To: net@FreeBSD.org Message-ID: <20060524015826.GA54564@xor.obsecurity.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="M9NhX3UHpAaciwkO" Content-Disposition: inline User-Agent: Mutt/1.4.2.1i Cc: Subject: panic: m_prepend: MH_ALIGN not PKTHDR mbuf X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 May 2006 01:58:45 -0000 --M9NhX3UHpAaciwkO Content-Type: text/plain; charset=us-ascii Content-Disposition: inline I got this panic as a non-privileged user running the stress2 test component that does random syscalls: panic: m_prepend: MH_ALIGN not PKTHDR mbuf cpuid = 1 KDB: enter: panic [thread pid 15370 tid 100536 ] Stopped at kdb_enter+0x32: leave db> wh Tracing pid 15370 tid 100536 td 0xc5561000 kdb_enter(c073c6b2,1,c0741b31,eced5be0,c5561000) at kdb_enter+0x32 panic(c0741b31,c07199c6,2,0,e) at panic+0x1b1 m_prepend(c4dc0300,c,2,e,eced5c58) at m_prepend+0xd8 sendit(eced5c58,7cd3a4b7,eced5c54,28,c4beb1a0) at sendit+0x1a4 osendmsg(c5561000,eced5d04,c,445,3) at osendmsg+0x89 syscall(c54f003b,b51f003b,bfbf003b,f7a64185,bd4fa8c6) at syscall+0x163 Xint0x80_syscall() at Xint0x80_syscall+0x1f --- syscall (114, FreeBSD ELF32, osendmsg), eip = 0x280a4d4d, esp = 0xbfbfeae0, ebp = 0xbfbfeb28 --- #8 0xc053e4d5 in panic (fmt=0xc0741b31 "%s: MH_ALIGN not PKTHDR mbuf") at ../../../kern/kern_shutdown.c:549 #9 0xc057fdc6 in m_prepend (m=0xc4dc0300, len=12, how=0) at ../../../kern/uipc_mbuf.c:500 #10 0xc058bc16 in sendit (td=0xc5561000, s=-657691676, mp=0xeced5c58, flags=18) at ../../../kern/uipc_syscalls.c:700 #11 0xc058bd62 in osendmsg (td=0xc5561000, uap=0xeced5d04) at ../../../kern/uipc_syscalls.c:892 #12 0xc06fa7d7 in syscall (frame= {tf_fs = -984678341, tf_es = -1256259525, tf_ds = -1078001605, tf_edi = -140099195, tf_esi = -1118852922, tf_ebp = -1077941464, tf_isp = -319988380, tf_ebx = 1628509609, tf_edx = 176, tf_ecx = 134516915, tf_eax = 114, tf_trapno = 32, tf_err = 2, tf_eip = 671763789, tf_cs = 51, tf_eflags = 659, tf_esp = -1077941536, tf_ss = 59}) at ../../../i386/i386/trap.c:1016 #13 0xc06e3daf in Xint0x80_syscall () at ../../../i386/i386/exception.s:191 #14 0x00000033 in ?? () Previous frame inner to this frame (corrupt stack?) Core available. Kris --M9NhX3UHpAaciwkO Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (FreeBSD) iD8DBQFEc73BWry0BWjoQKURAnZdAJ9dLbcbBGj6NLy7qrE7Xnf+2i/N5QCg2bxB uPH9BhHPpedXS8Q0ltbRzek= =aa5p -----END PGP SIGNATURE----- --M9NhX3UHpAaciwkO--