Same as 1016, fix committed.

Matthew Dillon wrote:
 >     Ok, this is definitely the same bug as issue 1016 and I've got it
 >     reproduced and will be committing a fix today.

I think you already found the bug. It is definitively related to CAM,
because for some reason, after I cvs-updated my sources and those CAM
changes came in (for some reasons they came in after I committed the usb
changes), the error started to appeared.

Thanks! This fix allows me to start with the real USB changes.

Regards,

   Michael

Ok, this is definitely the same bug as issue 1016 and I've got it
    reproduced and will be committing a fix today.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>

::
::Anyone else getting a kernel panic using the most recent HEAD revision?
::
::When booting from CD:
::
::	Mounting root from cd9660:cd0c
::
::
::	Fatal trap 12: page fault while in kernel mode
::	fault virtual address = 0x8
::	...
::	...
::	...
::	kernel: type 12 trap, code=0
::	Stopped at	dsioctl+0x64	cmpl 0x8(%eax),%edx
::
::
::When booting from HD:
::
::	Mounting root from ufs:/dev/ad0s1a
::	no disk named 'ad0s1a'
::	setrootbyname failed
::	ffs_mountroot: can't find rootvp
::	Root mount failed: 6
::
::	Manual root filesystem specification.

    I am having problems reproducing the actual assembly being reported
    as the failure point.

    Are you using any special options when compiling or overriding the
    compiler? (using GCC-3 instead of GCC-4)?

    I am doing a full world rebuild, install, and then rebuilding the
    kernel with the new world right now to see if that produces different
    code.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>

:Hi,
:
:Anyone else getting a kernel panic using the most recent HEAD revision?
:
:When booting from CD:
:
:	Mounting root from cd9660:cd0c
:
:
:	Fatal trap 12: page fault while in kernel mode
:	fault virtual address = 0x8
:	...
:	...
:	...
:	kernel: type 12 trap, code=0
:	Stopped at	dsioctl+0x64	cmpl 0x8(%eax),%edx
:
:
:When booting from HD:
:
:	Mounting root from ufs:/dev/ad0s1a
:	no disk named 'ad0s1a'
:	setrootbyname failed
:	ffs_mountroot: can't find rootvp
:	Root mount failed: 6
:
:	Manual root filesystem specification.
:
:
:Could it be related to this patch?
:
:http://www.dragonflybsd.org/cvsweb/src/sys/vfs/ufs/ffs_balloc.c.diff?r1=1.18&r2=1.19&f=u
:
:Regards,

    It seems really unlikely that it would be related to that patch.

    Is this on a new machine that never ran DragonFly before?  What's
    the context?

						-Matt

This seems to be #1016.

Hi,

Anyone else getting a kernel panic using the most recent HEAD revision?

When booting from CD:

	Mounting root from cd9660:cd0c

	Fatal trap 12: page fault while in kernel mode
	fault virtual address = 0x8
	...
	...
	...
	kernel: type 12 trap, code=0
	Stopped at	dsioctl+0x64	cmpl 0x8(%eax),%edx

When booting from HD:

	Mounting root from ufs:/dev/ad0s1a
	no disk named 'ad0s1a'
	setrootbyname failed
	ffs_mountroot: can't find rootvp
	Root mount failed: 6

	Manual root filesystem specification.

Could it be related to this patch?

http://www.dragonflybsd.org/cvsweb/src/sys/vfs/ufs/ffs_balloc.c.diff?r1=1.18&r2=1.19&f=u

Regards,

   Michael