On 02/01/10 04:54, Dan Carpenter wrote:
On Sun, Jan 31, 2010 at 05:39:22PM -0800, Justin P. Mattock wrote:
On 01/31/10 16:43, Rafael J. Wysocki wrote:
This message has been generated automatically as a part of a report
of regressions introduced between 2.6.31 and 2.6.32.
The following bug entry is on the current list of known regressions
introduced between 2.6.31 and 2.6.32. Please verify if it still should
be listed and let me know (either way).
Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=14487
Subject : PANIC: early exception 08 rip 246:10 error ffffffff810251b5 cr2 0
Submitter : Justin P. Mattock<justinmattock@xxxxxxxxx>
Date : 2009-10-23 16:45 (101 days old)
References : http://lkml.org/lkml/2009/10/23/252
yeah still hitting this.
looking at the issue if I change:
@@ 260
if ((class == 0xffffffff))
continue;
to
if ((class == 0xffffffff || 0xffffffffffffffff))
continue;
Uh... 0xffffffffffffffff is always true so basically that's the same as deleting the
if condition.
I've added the linux1394-devel people to the CC list.
Justin has found an issue that when he boots with: ohci1394_dma=early his computer
crashes.
He can get it to boot by modifying drivers/ieee1394/init_ohci1394_dma.c:
init_ohci1394_dma_on_all_controllers()
254 /* Poor man's PCI discovery, the only thing we can do at early boot */
255 for (num = 0; num< 32; num++) {
256 for (slot = 0; slot< 32; slot++) {
257 for (func = 0; func< 8; func++) {
258 u32 class = read_pci_config(num,slot,func,
259 PCI_CLASS_REVISION);
260 if ((class == 0xffffffff))
261 continue; /* No device at this func */
If he continues here then his system boots.
262
263 if (class>>8 != PCI_CLASS_SERIAL_FIREWIRE_OHCI)
264 continue; /* Not an OHCI-1394 device */
265
266 init_ohci1394_controller(num, slot, func);
267 break; /* Assume one controller per device */
This comment is not terribly clear btw. The code assumes one controller per slot.
268 }
269 }
270 }
regards,
dan carpenter
I'm able to boot, but don't have enough knowledge to know
what is really happening(or how to execute this).
will continue looking at this
(hopefully I get somewhere on this);
Justin P. Mattock
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Please read the FAQ at http://www.tux.org/lkml/
yeah I'll admit it, I don't know what I'm doing
(but am willing to try).
Thanks for the response, I'll try and
give as much info on this as possible.
Justin P. Mattock
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