Date: Thu, 16 Sep 2004 11:38:41 GMT From: Claudio Destro <o1b6@tiscali.it> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/71791: Fatal trap 12: page fault while in kernel mode Message-ID: <200409161138.i8GBcf1N075379@www.freebsd.org> Resent-Message-ID: <200409161140.i8GBeQhj001658@freefall.freebsd.org>
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>Number: 71791 >Category: kern >Synopsis: Fatal trap 12: page fault while in kernel mode >Confidential: no >Severity: serious >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Sep 16 11:40:25 GMT 2004 >Closed-Date: >Last-Modified: >Originator: Claudio Destro >Release: FreeBSD 5.3-BETA4 i386 >Organization: >Environment: >Description: I receive a fatal trap 12 *every* time I disconnect my usb mass storage. Inserting is ok: .. uhub1: Sony USB Embedded Hub, class 9/0, rev. 2.00/0.01, addr3 uhub1: 1 port with 0 removable, self powered umass0: Sony USB Mass Storage Denic, rev 2.00/0.01, addr 4 da1: at umass-sim0 bus 0 target 0 lun 0 da1: <Sony Storage Media 1.00> Removable Direct Access SCSI-0 device da1: 1.000MB/s transfers da1: 125MB (256000 512 bytes sectors; 64H 32/T 125LI) .. Removing results in a kernel panic: uhub1: at ubhub0 port 1 (addr 3) disconnected (da:umass-sim0:0:0:0): lost device (da:umass-sim0:0:0:0): removing device entry umass0: detached (null): at uhub1 port 1 (addr 4) disconnected Fatal trap 12: page fault while in kernel mode fault virtual address = 0x400 fault code = supervisor read, page not present instruction pointer = 0x84 0xc0690904 stack pointer = 0x10 0xcc746bd4 frame pointer = 0x10 0xcc746bf4 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 = 37 (usb0) trap number = 12 .. I dumped these info by hand this morning, but I think there are no errors... hope this helps. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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