Re: panic on shutdown anyone (insmntque())?

On Sat, Sep 06, 2008 at 06:41:04PM -0500, Richard Todd wrote:
> On Sat, Sep 06, 2008 at 08:12:43PM +0200, Pawel Jakub Dawidek wrote:
> > On Fri, Sep 05, 2008 at 07:01:55PM -0500, Richard Todd wrote:
> > > But appears not to fix the panic I've seen trying to boot any kernel since
> > > the insmntque patches went in, just at the point where it tries to mount
> > > the root FS:
> > [...]
> > 
> > I committed another fix, try now.
> 
> Still panics at trying to mount root, but a different panic:
> 
> Trying to mount root from zfs:rootpool/tolot-root
> 
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 1; apic id = 01
> fault virtual address	= 0x83
> fault code		= supervisor read, page not present
> instruction pointer	= 0x20:0x80b1d76a
> stack pointer	        = 0x28:0x86ce57e8
> frame pointer	        = 0x28:0x86ce57fc
> 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		= 1 (kernel)
> [thread pid 1 tid 100002 ]
> Stopped at      VOP_UNLOCK_APV+0x1a:    cmpl    $0,0x80(%ebx)
> db> bt
> Tracing pid 1 tid 100002 td 0x870c4d20
> VOP_UNLOCK_APV(3,86ce5850,275,0,86ce585c,...) at VOP_UNLOCK_APV+0x1a
> zfs_zget(87ae9000,3,0,86ce5950,8,...) at zfs_zget+0x218
[...]

Grr, too many differences between HEAD and perforce already. Please, try
this patch:

	http://people.freebsd.org/~pjd/patches/zfs_znode.c.patch

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd_at_FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!