From owner-freebsd-current@FreeBSD.ORG Thu May 22 09:33:08 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 CB21237B401 for ; Thu, 22 May 2003 09:33:08 -0700 (PDT) Received: from mail.speakeasy.net (mail12.speakeasy.net [216.254.0.212]) by mx1.FreeBSD.org (Postfix) with ESMTP id 29EA543FAF for ; Thu, 22 May 2003 09:33:08 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Received: (qmail 14803 invoked from network); 22 May 2003 16:33:05 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender )encrypted SMTP for ; 22 May 2003 16:33:05 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.8/8.12.8) with ESMTP id h4MGX1p0061354; Thu, 22 May 2003 12:33:02 -0400 (EDT) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.4 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <7mllwzlu0u.wl@black.imgsrc.co.jp> Date: Thu, 22 May 2003 12:33:13 -0400 (EDT) From: John Baldwin To: Jun Kuriyama cc: Current Subject: RE: Panic in _mtx_lock_flags+0x40 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: Thu, 22 May 2003 16:33:09 -0000 On 22-May-2003 Jun Kuriyama wrote: > > This kernel is yesterday's. I'll update the kernel and try again... > > > ad0: READ command timeout tag=0 serv=0 - resetting > ata0: resetting devices .. > done > ad0: READ command timeout tag=0 serv=0 - resetting > ata0: resetting devices .. > done > ad0: READ command timeout tag=0 serv=0 - resetting > ata0: resetting devices .. > done > ad0: READ command timeout tag=0 serv=0 - resetting > ata0: resetting devices .. > ad0: removed from configuration > > > Fatal trap 12: page fault while in kernel mode > cpuid = 0; lapic.id = 00000000 > fault virtual address = 0x0 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc02259c0 > stack pointer = 0x10:0xe11eda54 > frame pointer = 0x10:0xe11eda70 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 13 (swi7: tty:sio clock) > kernel: type 12 trap, code=0 > Stopped at _mtx_lock_flags+0x40: cmpl $0xc043c18c,0(%ecx) > db> trace > _mtx_lock_flags(0,0,c0401b81,11d,e11edb18) at _mtx_lock_flags+0x40 Trying to lock a NULL pointer is definitely going to panic, yes. I'm curious what vm_fault() line you are at. > vm_fault(c082f000,deadc000,1,0,c3affab0) at vm_fault+0x2cc > trap_pfault(e11edc10,0,deadc0de,cf74d400,deadc0de) at trap_pfault+0x161 > trap(c0410018,10,c03e0010,c7a73c9c,c7e8f600) at trap+0x3ad > calltrap() at calltrap+0x5 > --- trap 0xc, eip = 0xc015c580, esp = 0xe11edc50, ebp = 0xe11edc68 --- > ad_detach(c7a73c9c,ffffffff,c03d5de3,0,1) at ad_detach+0x40 The real bug is probably here, probably a NULL pointer dereference. I would use gdb to figure out what this file:line is and send the report to Søren. > ata_reinit(c7a73c00,cacf5100,c03d1747,0,0) at ata_reinit+0x9b > ad_timeout(cacf5100,0,c03ec2fe,bf,4feaef) at ad_timeout+0x136 > softclock(0,0,c03e9271,233,c3afe780) at softclock+0x19c > ithread_loop(c3afd200,e11edd48,c03e9122,2f8,0) at ithread_loop+0x182 > fork_exit(c021bab0,c3afd200,e11edd48) at fork_exit+0xc0 > fork_trampoline() at fork_trampoline+0x1a > --- trap 0x1, eip = 0, esp = 0xe11edd7c, ebp = 0 --- > db> panic > panic: from debugger > cpuid = 0; lapic.id = 00000000 > Debugger("panic") > > > Fatal trap 3: breakpoint instruction fault while in kernel mode > cpuid = 0; lapic.id = 00000000 > instruction pointer = 0x8:0xc038ef75 > stack pointer = 0x10:0xe11ed7c4 > frame pointer = 0x10:0xe11ed7d0 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = IOPL = 0 > current process = 13 (swi7: tty:sio clock) > Stopped at _mtx_lock_flags+0x40: cmpl $0xc043c18c,0(%ecx) > db> panic > panic: from debugger > cpuid = 0; lapic.id = 00000000 > boot() called on cpu#0 > Uptime: 14h33m40s > Dumping 2047 MB > ata2: resetting devices .. > done > ad4: timeout waiting for DRQata2: resetting devices .. > > > -- > Jun Kuriyama // IMG SRC, Inc. > // FreeBSD Project > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/