Date: Wed, 23 May 2012 16:22:07 +0200 From: Ian FREISLICH <ianf@clue.co.za> To: Konstantin Belousov <kostikbel@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: (no subject) (was panic in vfs_lookup/kern_statat_vnhook?) Message-ID: <E1SXCRz-0001kZ-0d@clue.co.za> In-Reply-To: <20120523134949.GD2358@deviant.kiev.zoral.com.ua> References: <20120523134949.GD2358@deviant.kiev.zoral.com.ua> <201205230930.03282.jhb@freebsd.org> <201205221641.13091.jhb@freebsd.org> <E1SWtwE-0000Ru-Eu@clue.co.za> <E1SX3Bt-0000qb-JF@clue.co.za> <E1SXBpO-0001ep-Ei@clue.co.za>
next in thread | previous in thread | raw e-mail | index | archive | help
Konstantin Belousov wrote:
> On Wed, May 23, 2012 at 03:42:14PM +0200, Ian FREISLICH wrote:
> > John Baldwin wrote:
> > > On Wednesday, May 23, 2012 12:28:53 am Ian FREISLICH wrote:
> > > > (kgdb) frame 7
> > > > #7 0xc0878682 in pmap_enter (pmap=3D0xc09e4060, va=3D3359633408, acc=
> ess=3D7 '\a'
> > ,=20
> > > > m=3D0xc191bf70, prot=3D7 '\a', wired=3D1) at=20
> > > /usr/src/sys/i386/i386/pmap.c:1596
> > > > 1596 root =3D vm_page_splay(mpte->pindex, root);
> > > > (kgdb) l
> > > > 1591 root =3D pmap->pm_root;
> > > > 1592 if (root =3D=3D NULL) {
> > > > 1593 mpte->left =3D NULL;
> > > > 1594 mpte->right =3D NULL;
> > > > 1595 } else {
> > > > 1596 root =3D vm_page_splay(mpte->pindex, root);
> > > > 1597 if (mpte->pindex < root->pindex) {
> > > > 1598 mpte->left =3D root->left;
> > > > 1599 mpte->right =3D root;
> > > > 1600 root->left =3D NULL;
> > >=20
> > > Ok, can you do 'p root', 'p mpte', and 'p *mpte'?
> >=20
> > (kgdb) frame 7
> > #7 0xc0878682 in pmap_enter (pmap=3D0xc09e4060, va=3D3359633408, access=
> =3D7 '\a',=20
> > m=3D0xc191bf70, prot=3D7 '\a', wired=3D1) at /usr/src/sys/i386/i386/p=
> map.c:1596
> > 1596 root =3D vm_page_splay(mpte->pindex, root);
> > (kgdb) p root
> > No symbol "root" in current context.
> > (kgdb) p mpte
> > $1 =3D 0x0
> > (kgdb) p *mpte
> > Cannot access memory at address 0x0
>
> Do you have r235776 in your tree ? This could be another manifestation of
> this bug.
I'm not sure. I'm still using cvs. But, it happened with sources
updated last night if that helps.
Ian
--
Ian Freislich
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E1SXCRz-0001kZ-0d>