Date: Thu, 16 Sep 2004 21:26:05 +0200 From: Phil Schulz <ph.schulz@gmx.de> To: freebsd-current@freebsd.org Subject: Panic with umass device - trace included - unable to obtain dump Message-ID: <4149E8CD.2080805@gmx.de>
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Hello! I've just bought one of those MP3 players that are supposed to work as an umass device. When I plug it in, I always get a "Fatal trap 12: page fault ...". Exact message and trace can be found towards the end of this mail. I've googled a bit but found nothing indicating that this is a known issue. I'm running 5.3-BETA4 FreeBSD 5.3-BETA4 and the kernel is built with debug symbols and other debug options enabled (WITNESS, GDB, etc.) I've also added "dumpdev" and "dumpdir" to /etc/rc.conf, but after I `reset` the PC from the db> prompt, I don't get any core dumps in /var/core; savecore just says "no dumps found" on boot. I've searched google and revealed [1]. I then tried to enter the debugger from the console and issued `panic` and I did get a core dump then. Now, I think there are two issues. The panic itself and my unability to debug it. Can anyone help me? I can offer more information on demand, even remote console access is possible. Kind regards, Phil. [1]http://lists.freebsd.org/pipermail/freebsd-hackers/2004-May/006916.html --- panic message below --- > # umass0: vendor 0x10d6 Actions USB Disk Device, rev 1.10/1.00, addr 2 > da0 at umass-sim0 bus 0 target 0 lun 0 > da0: <ACTIONS USB DISK DEVICE 1.00> Removable Direct Access SCSI-2 device > da0: 1.000MB/s transfers > da0: 123MB (252509 512 byte sectors: 64H 32S/T 123C) > umass0: BBB reset failed, STALLED > umass0: BBB bulk-in clear stall failed, STALLED > umass0: BBB bulk-out clear stall failed, STALLED > (da0:umass-sim0:0:0:0): Synchronize cache failed, status == 0x4, scsi status == 0x0 > umass0: BBB reset failed, STALLED > umass0: BBB bulk-in clear stall failed, STALLED > umass0: BBB bulk-out clear stall failed, STALLED > umass0: BBB reset failed, STALLED > umass0: BBB bulk-in clear stall failed, STALLED > umass0: BBB bulk-out clear stall failed, STALLED > umass0: at uhub2 port 2 (addr 2) disconnected > (da0:umass-sim0:0:0:0): lost device > umass0: BBB reset failed, STALLED > > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0xdeadc0ee > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc05a7e3e > stack pointer = 0x10:0xd41febf0 > frame pointer = 0x10:0xd41febf4 > 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 = 22 (irq11: uhci0) > [thread 100016] > Stopped at usbd_clear_endpoint_toggle+0xa: calll *0x10(%edx) > db> tr > usbd_clear_endpoint_toggle(c1ec6080,c1ec3b40,d41fec08,c243aa80,c24faa00) at usbd_clear_endpoint_toggle+0xa > umass_clear_endpoint_stall(c24faa00,82,c1ec6080,9,c1f36300) at umass_clear_endpoint_stall+0x2b > umass_bbb_state(c1f36500,c24faa00,11) at umass_bbb_state+0x41e > usb_transfer_complete(c1f36500,c1f36554,d41fec94,0,c243aa00) at usb_transfer_complete+0x128 > uhci_idone(c1f3656c,c1f36554,0,0,c1b91000) at uhci_idone+0x11b > uhci_check_intr(c1b91000,c1f3656c) at uhci_check_intr+0x80 > uhci_softintr(c1b91000,d41fece8,c059a907,c1b91000,c1ac83c0) at uhci_softintr+0x22 > usb_schedsoftintr(c1b91000,c1ac83c0,c197c800,c1982960,d41fecf4) at usb_schedsoftintr+0xd > uhci_intr1(c1b91000,d41fed1c,c05e6930,c1b91000,0) at uhci_intr1+0x16b > uhci_intr(c1b91000) at uhci_intr+0x28 > ithread_loop(c197c800,d41fed48,c197c800,c05e680c,0) at ithread_loop+0x124 > fork_exit(c05e680c,c197c800,d41fed48) at fork_exit+0xa4 > fork_trampoline() at fork_trampoline+0x8 > --- trap 0x1, eip = 0, esp = 0xd41fed7c, ebp = 0 --- > db> reset --- end of panic message --- -- Did you know... If you play a Windows 2000 CD backwards, you hear satanic messages, but what's worse is when you play it forward.... ...it installs Windows 2000 -- Alfred Perlstein on chat@freebsd.org
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