From owner-freebsd-current@FreeBSD.ORG Tue Apr 15 10:29:31 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6CD3637B401; Tue, 15 Apr 2003 10:29:31 -0700 (PDT) Received: from obsecurity.dyndns.org (adsl-63-207-60-150.dsl.lsan03.pacbell.net [63.207.60.150]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2A16B43FA3; Tue, 15 Apr 2003 10:29:30 -0700 (PDT) (envelope-from kris@obsecurity.org) Received: from rot13.obsecurity.org (rot13.obsecurity.org [10.0.0.5]) by obsecurity.dyndns.org (Postfix) with ESMTP id D6B3C66CFA; Tue, 15 Apr 2003 10:29:29 -0700 (PDT) Received: by rot13.obsecurity.org (Postfix, from userid 1000) id C229D1164; Tue, 15 Apr 2003 10:29:29 -0700 (PDT) Date: Tue, 15 Apr 2003 10:29:29 -0700 From: Kris Kennaway To: Kris Kennaway Message-ID: <20030415172929.GA65268@rot13.obsecurity.org> References: <20030325222204.GA6918@rot13.obsecurity.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="RnlQjJ0d97Da+TV1" Content-Disposition: inline In-Reply-To: <20030325222204.GA6918@rot13.obsecurity.org> User-Agent: Mutt/1.4i cc: current@FreeBSD.ORG cc: jhb@FreeBSD.org Subject: Another "impossible" mutex panic (Re: Panic in wait4()) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Tue, 15 Apr 2003 17:29:31 -0000 --RnlQjJ0d97Da+TV1 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Mar 25, 2003 at 02:22:04PM -0800, Kris Kennaway wrote: > I just got this on bento (running a kernel from Mar 17). It was under > heavy disk load at the time, which may or may not be relevant. >=20 > Kris >=20 > panic: mtx_lock() of spin mutex %s @ %s:%d > panic messages: I just got another one of these "impossible" panics on one of the gohans (impossible because according to gdb the mutex is not a spin mutex, so the assertion should not have fired). panic: mtx_lock() of spin mutex %s @ %s:%d panic messages: --- Fatal trap 12: page fault while in kernel mode fault virtual address =3D 0x260 fault code =3D supervisor read, page not present instruction pointer =3D 0x8:0xc02bd3a8 stack pointer =3D 0x10:0xd8fc1b48 frame pointer =3D 0x10:0xd8fc1b48 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, def32 1, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 78102 (sh) Dumping 510 MB ata0: resetting devices .. done 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 = 336 352 368 384 400 4\ 16 432 448 464 480 496 --- #0 doadump () at /a/asami/portbuild/i386/src-client/sys/kern/kern_shutdown= .c:239 239 /a/asami/portbuild/i386/src-client/sys/kern/kern_shutdown.c: No suc= h file or directory. in /a/asami/portbuild/i386/src-client/sys/kern/kern_shutdown.c (kgdb) bt #0 doadump () at /a/asami/portbuild/i386/src-client/sys/kern/kern_shutdown= .c:239 #1 0xc0165d15 in db_fncall (dummy1=3D1016, dummy2=3D0, dummy3=3D1016, dumm= y4=3D0xd8fc1934 "\f") at /a/asami/portbuild/i386/src-client/sys/ddb/db_command.c:546 #2 0xc0165a92 in db_command (last_cmdp=3D0xc0445260, cmd_table=3D0x0, aux_= cmd_tablep=3D0xc043edd8, aux_cmd_tablep_end=3D0xc043eddc) at /a/asami/portbuild/i386/src-client/sys/ddb/db_command.c:346 #3 0xc0165ba6 in db_command_loop () at /a/asami/portbuild/i386/src-client/sys/ddb/db_command.c:470 #4 0xc016892a in db_trap (type=3D12, code=3D0) at /a/asami/portbuild/i386/src-client/sys/ddb/db_trap.c:72 #5 0xc03c3d46 in kdb_trap (type=3D12, code=3D0, regs=3D0xd8fc1b08) at /a/asami/portbuild/i386/src-client/sys/i386/i386/db_interface.c:170 #6 0xc03d53d2 in trap_fatal (frame=3D0xd8fc1b08, eva=3D0) at /a/asami/portbuild/i386/src-client/sys/i386/i386/trap.c:838 #7 0xc03d50e2 in trap_pfault (frame=3D0xd8fc1b08, usermode=3D0, eva=3D608) at /a/asami/portbuild/i386/src-client/sys/i386/i386/trap.c:757 #8 0xc03d4c5d in trap (frame=3D {tf_fs =3D -654573544, tf_es =3D -1071185904, tf_ds =3D -1068957680, = tf_edi =3D -987128304, tf_esi\ =3D -1069422829, tf_ebp =3D -654566584, tf_isp =3D -654566604, tf_ebx =3D = 608, tf_edx =3D 608, tf_ecx =3D 0\ , tf_eax =3D 608, tf_trapno =3D 12, tf_err =3D 0, tf_eip =3D -1070869592, t= f_cs =3D 8, tf_eflags =3D 66118, \ tf_esp =3D -654566384, tf_ss =3D -1071153877}) at /a/asami/portbuild/i386/src-client/sys/i386/i386/trap.c:444 #9 0xc03c56a8 in calltrap () at {standard input}:96 #10 0xc0277d2b in kvprintf (fmt=3D0xc041e713 " @ %s:%d", func=3D0xc02776d0 = , arg=3D0xd8fc1c2c, radix=3D10, ap=3D0xd8fc1c74 "XXXbinarydataXXX") at /a/asami/portbuild/i386/src-client/sys/kern/subr_prf.c:668 #11 0xc027764e in vsnprintf (str=3D0xc0494840 "mtx_lock() of spin mutex ", = size=3D0, format=3D0x0, ap=3D0x0) at /a/asami/portbuild/i386/src-client/sys/kern/subr_prf.c:413 #12 0xc025acec in panic (fmt=3D0xd8fc1c2c "YHI) at /a/asami/portbuild/i386/src-client/sys/kern/kern_shutdown.c:509 #13 0xc0251126 in _mtx_lock_flags (m=3D0xc045b5c0, opts=3D0, file=3D0xc041eef5 "/a/asami/portbuild/i386/src-client/sys/kern/kern_res= ource.c", line=3D940) at /a/asami/portbuild/i386/src-client/sys/kern/kern_mutex.c:332 #14 0xc0259a3d in uifree (uip=3D0xc045b5c0) at /a/asami/portbuild/i386/src-client/sys/kern/kern_resource.c:940 #15 0xc025650a in setreuid (td=3D0x0, uap=3D0x0) at /a/asami/portbuild/i386/src-client/sys/kern/kern_prot.c:902 #16 0xc03d56ee in syscall (frame=3D {tf_fs =3D 47, tf_es =3D 47, tf_ds =3D 47, tf_edi =3D 0, tf_esi =3D 0= , tf_ebp =3D -1077941152, tf_isp \ =3D---Type to continue, or q to quit--- -654566028, tf_ebx =3D 3, tf_edx =3D 0, tf_ecx =3D 0, tf_eax =3D 126, tf_t= rapno =3D 12, tf_err =3D 2, tf_ei\ p =3D 134699020, tf_cs =3D 31, tf_eflags =3D 659, tf_esp =3D -1077941228, t= f_ss =3D 47}) at /a/asami/portbuild/i386/src-client/sys/i386/i386/trap.c:1030 #17 0xc03c56fd in Xint0x80_syscall () at {standard input}:138 ---Can't read userspace from dump, or kernel process--- --RnlQjJ0d97Da+TV1 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (FreeBSD) iD8DBQE+nEF5Wry0BWjoQKURAoYLAKC9ZO0fjHSUBYVJzFWPRTYFiKomjQCglhGI Y1BLqEIHKtcjKbyU2zBIHyQ= =UWLA -----END PGP SIGNATURE----- --RnlQjJ0d97Da+TV1--