From owner-freebsd-stable Wed Oct 6 14:28:39 1999 Delivered-To: freebsd-stable@freebsd.org Received: from nomis.simon-shapiro.org (nomis.simon-shapiro.org [209.86.126.163]) by hub.freebsd.org (Postfix) with SMTP id 3315915488 for ; Wed, 6 Oct 1999 14:27:13 -0700 (PDT) (envelope-from shimon@simon-shapiro.org) Received: (qmail 9430 invoked from network); 6 Oct 1999 21:26:16 -0000 Received: from localhost.simon-shapiro.org (HELO simon-shapiro.org) (127.0.0.1) by localhost.simon-shapiro.org with SMTP; 6 Oct 1999 21:26:16 -0000 Message-ID: <37FBBE78.921F466A@simon-shapiro.org> Date: Wed, 06 Oct 1999 17:26:16 -0400 From: Simon Shapiro as Himself Organization: Simon's Garage X-Mailer: Mozilla 4.6 [en] (X11; I; FreeBSD 3.3-RELEASE i386) X-Accept-Language: en MIME-Version: 1.0 To: stable@freebsd.org Subject: A panic, can anyone help? Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In 3.3, the following shell script: for a in 1 2 3 4 5 6 7 8 9 0 do dd if=/dev/some_disk of=/dev/null bs=128k count=16 skip=${a}00& done procudes: Fatal trap 12: page fault while in kernel mode fault virtual address = 0x8000000c fault code = supervisor read, page not present instruction pointer = 0x8:0xc019c951 stack pointer = 0x10:0xda337e2c frame pointer = 0x10:0xda337e7c 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 = 291 (dd) interrupt mask = kernel: type 12 trap, code=0 Stopped at spec_read+0xed: cmpb $0x7,0xc(%edx) db> trace spec_read(da337ec8,da2a4500,c11f62c0,da337f10,da337ea0) at spec_read+0xed ufsspec_read(da337ec8,da337edc,c0197083,da337ec8,c11f62c0) at ufsspec_read+0x20 ufs_vnoperatespec(da337ec8,c11f62c0,20000,da2a6fa0,da2a4500) at ufs_vnoperatespec+0x15 vn_read(c11f62c0,da337f10,c11f5f80,0,da337f94) at vn_read+0x127 dofileread(da2a6fa0,c11f62c0,3,805d000,20000) at dofileread+0x8d read(da2a6fa0,da337f94,bfbfd46c,6,bfbfd46c) at read+0x33 syscall(27,27,bfbfd46c,6,bfbfd434) at syscall+0x187 Xint0x80_syscall() at Xint0x80_syscall+0x2c The calls do not even get to the device driver in question. Any suggestion? -- Sincerely Yours, Shimon@Simon-Shapiro.ORG 404.644.6401 Simon Shapiro Unwritten code has no bugs and executes at twice the speed of mouth To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message