From owner-freebsd-current@FreeBSD.ORG Sun Apr 6 11:57:33 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 2AF5337B404 for ; Sun, 6 Apr 2003 11:57:33 -0700 (PDT) Received: from lerami.lerctr.org (lerami.lerctr.org [207.158.72.11]) by mx1.FreeBSD.org (Postfix) with ESMTP id 84C7643FBD for ; Sun, 6 Apr 2003 11:57:31 -0700 (PDT) (envelope-from ler@lerctr.org) Received: from lerlaptop.lerctr.org (lerlaptop.lerctr.org [207.158.72.14]) (authenticated bits=0)h36IvQYC009223; Sun, 6 Apr 2003 13:57:26 -0500 (CDT) Date: Sun, 06 Apr 2003 13:57:25 -0500 From: Larry Rosenman To: "M. Warner Losh" Message-ID: <3950000.1049655445@lerlaptop.lerctr.org> In-Reply-To: <3000000.1049628223@lerlaptop.lerctr.org> References: <9400000.1049488982@lerlaptop.iadfw.net> <20030405.213227.60415608.imp@bsdimp.com> <2150000.1049627271@lerlaptop.lerctr.org> <3000000.1049628223@lerlaptop.lerctr.org> X-Mailer: Mulberry/3.0.3 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Virus-Scanned: by amavisd-milter (http://amavis.org/) cc: freebsd-current@freebsd.org Subject: Re: Integer Exception/5-CURRENT/cbb related 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: Sun, 06 Apr 2003 18:57:33 -0000 --On Sunday, April 06, 2003 06:23:43 -0500 Larry Rosenman wrote: > > > --On Sunday, April 06, 2003 06:07:51 -0500 Larry Rosenman > wrote: > >> What more can I get? >> >> I did do a list of the instruction pointer in the panic, and it's in the >> cbb driver, on a bus_space_read(IIRC), of 4 bytes, I can get whatever >> you'd like, or put the kernel/vmcore/whatever up. >> > Here is the list I was refering to: [snip] More noodling around with GDB, but I'd like some direction from a good kernel hacker to find out why this is happening. Script started on Sun Apr 6 13:48:33 2003 lerlaptop# gdb -k kernel.1 vmcore.2 GNU gdb 5.2.1 (FreeBSD) Copyright 2002 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-undermydesk-freebsd"... panic: integer divide fault panic messages: --- Fatal trap 18: integer divide fault while in kernel mode instruction pointer = 0x8:0xc0193d12 stack pointer = 0x10:0xd63cecc0 frame pointer = 0x10:0xd63cece0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, IOPL = 0 current process = 23 (irq11: cbb0 cbb1+++) trap number = 18 panic: integer divide fault syncing disks, buffers remaining... 3541 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 3537 giving up on 1817 buffers Uptime: 6m0s Dumping 503 MB ata0: resetting devices .. done 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 336 352 368 384 400 416 432 448 464 480 496 --- Reading symbols from /usr/obj/usr/src/sys/LERLAPTOP/modules/usr/src/sys/modules/acpi/acpi.ko.deb ug...done. Loaded symbols for /usr/obj/usr/src/sys/LERLAPTOP/modules/usr/src/sys/modules/acpi/acpi.ko.deb ug Reading symbols from /usr/obj/usr/src/sys/LERLAPTOP/modules/usr/src/sys/modules/linux/linux.ko.d ebug...done. Loaded symbols for /usr/obj/usr/src/sys/LERLAPTOP/modules/usr/src/sys/modules/linux/linux.ko.d ebug #0 doadump () at /usr/src/sys/kern/kern_shutdown.c:239 239 dumping++; (kgdb) bt #0 doadump () at /usr/src/sys/kern/kern_shutdown.c:239 #1 0xc0245b1a in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:371 #2 0xc0245d93 in panic () at /usr/src/sys/kern/kern_shutdown.c:542 #3 0xc039a10e in trap_fatal (frame=0xc14eb130, eva=0) at /usr/src/sys/i386/i386/trap.c:843 #4 0xc0399c02 in trap (frame= {tf_fs = -1051852776, tf_es = -1051852784, tf_ds = -700710896, tf_edi = -1051807440, tf_esi = -1051832832, tf_ebp = -700650272, tf_isp = -700650324, tf_ebx = -1007012800, tf_edx = -546881536, tf_ecx = -1069393536, tf_eax = 0, tf_trapno = 18, tf_err = 0, tf_eip = -1072087790, tf_cs = 8, tf_eflags = 514, tf_esp = -1071394701, tf_ss = 344}) at /usr/src/sys/i386/i386/trap.c:640 #5 0xc038b318 in calltrap () at {standard input}:96 #6 0xc0234502 in ithread_loop (arg=0xc3f8aa00) at /usr/src/sys/kern/kern_intr.c:536 #7 0xc0233742 in fork_exit (callout=0xc02343b0 , arg=0x0, frame=0x0) at /usr/src/sys/kern/kern_fork.c:796 (kgdb) fr 4 #4 0xc0399c02 in trap (frame= {tf_fs = -1051852776, tf_es = -1051852784, tf_ds = -700710896, tf_edi = -1051807440, tf_esi = -1051832832, tf_ebp = -700650272, tf_isp = -700650324, tf_ebx = -1007012800, tf_edx = -546881536, tf_ecx = -1069393536, tf_eax = 0, tf_trapno = 18, tf_err = 0, tf_eip = -1072087790, tf_cs = 8, tf_eflags = 514, tf_esp = -1071394701, tf_ss = 344}) at /usr/src/sys/i386/i386/trap.c:640 640 trap_fatal(&frame, eva); (kgdb) l 635 /* FALLTHROUGH */ 636 #endif /* POWERFAIL_NMI */ 637 #endif /* DEV_ISA */ 638 } 639 640 trap_fatal(&frame, eva); 641 goto out; 642 } 643 644 /* Translate fault for emulators (e.g. Linux) */ (kgdb) print frame $1 = {tf_fs = -1051852776, tf_es = -1051852784, tf_ds = -700710896, tf_edi = -1051807440, tf_esi = -1051832832, tf_ebp = -700650272, tf_isp = -700650324, tf_ebx = -1007012800, tf_edx = -546881536, tf_ecx = -1069393536, tf_eax = 0, tf_trapno = 18, tf_err = 0, tf_eip = -1072087790, tf_cs = 8, tf_eflags = 514, tf_esp = -1071394701, tf_ss = 344} (kgdb) print fro? ?ame/x No symbol "x" in current context. (kgdb) print f? ?? ?/x frame $2 = {tf_fs = 0xc14e0018, tf_es = 0xc14e0010, tf_ds = 0xd63c0010, tf_edi = 0xc14eb130, tf_esi = 0xc14e4e00, tf_ebp = 0xd63cece0, tf_isp = 0xd63cecac, tf_ebx = 0xc3fa3440, tf_edx = 0xdf674000, tf_ecx = 0xc0425980, tf_eax = 0x0, tf_trapno = 0x12, tf_err = 0x0, tf_eip = 0xc0193d12, tf_cs = 0x8, tf_eflags = 0x202, tf_esp = 0xc023d073, tf_ss = 0x158} (kgdb) fr 5 #5 0xc038b318 in calltrap () at {standard input}:96 96 {standard input}: No such file or directory. in {standard input} Current language: auto; currently asm (kgdb) fr 6 #6 0xc0234502 in ithread_loop (arg=0xc3f8aa00) at /usr/src/sys/kern/kern_intr.c:536 536 ih->ih_handler(ih->ih_argument); Current language: auto; currently c (kgdb) print ig? ?h $3 = (struct intrhand *) 0xc3fa3440 (kgdb) print *ih $4 = {ih_handler = 0xc0193cf0 , ih_argument = 0xc14e4e00, ih_flags = 0, ih_name = 0xc3efa980 "cbb0", ih_ithread = 0xc3f8aa00, ih_need = 0, ih_next = {tqe_next = 0xc3fa3280, tqe_prev = 0xc3f8aa40}, ih_pri = 4 '\004'} (kgdb) print *ih->ih_ithread $5 = {it_lock = {mtx_object = {lo_class = 0xc0425920, lo_name = 0xc03dac81 "ithread", lo_type = 0xc03dac81 "ithread", lo_flags = 196608, lo_list = {tqe_next = 0x0, tqe_prev = 0x0}, lo_witness = 0x0}, mtx_lock = 4, mtx_recurse = 0, mtx_blocked = { tqh_first = 0x0, tqh_last = 0xc3f8aa24}, mtx_contested = {le_next = 0x0, le_prev = 0x0}}, it_td = 0xc14eb130, it_list = {le_next = 0x0, le_prev = 0x0}, it_handlers = {tqh_first = 0xc3fa3440, tqh_last = 0xc3f84e98}, it_interrupted = 0x0, it_disable = 0xc039d640 , it_enable = 0xc039d5d0 , it_md = 0x0, it_flags = 0, it_need = 0, it_vector = 11, it_name = "irq11:", '\0' } (kgdb) lerlaptop# ^D??exit Script done on Sun Apr 6 13:51:51 2003 -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 972-414-9812 E-Mail: ler@lerctr.org US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749