Re: [Xen-devel] 2.0-testing.bk

[Kip Macy <kmacy@xxxxxxxxxxx>]

What changeset should we be up to? I'm currently running 1.1666 which
you committed yesterday evening.

Frustrated that xm save for freebsd would give me:
(XEN) DOM0: (file=memory.c, line=425) Non-privileged attempt to map I/O
space 00000000

I tried 'xm save 0 foo' - which I'm not sure should be allowed - and
saw the following:

Unable to handle kernel NULL pointer dereference at virtual address
00000000
 printing eip:
c0298b6a
*pde = ma 00000000 pa 55555000
 [<c01069f3>] __do_suspend+0x43/0x1e0
 [<c0117906>] __wake_up+0x46/0xa0
 [<c012b96f>] worker_thread+0x22f/0x340
 [<c0106c60>] __shutdown_handler+0x0/0x50
 [<c0117840>] default_wake_function+0x0/0x20
 [<c0117840>] default_wake_function+0x0/0x20
 [<c012b740>] worker_thread+0x0/0x340
 [<c013009a>] kthread+0xaa/0xb0
 [<c012fff0>] kthread+0x0/0xb0
 [<c01076b5>] kernel_thread_helper+0x5/0x10
Oops: 0000 [#1]
PREEMPT DEBUG_PAGEALLOC
Modules linked in:
CPU:    0
EIP:    0061:[<c0298b6a>]    Not tainted VLI
EFLAGS: 00011296   (2.6.10-xen0)
EIP is at netif_suspend+0xa/0x40
eax: fbffc000   ebx: 00000000   ecx: 00000001   edx: ce57e000
esi: c0101000   edi: c05e8000   ebp: 00000000   esp: c05e9f0c
ds: 007b   es: 007b   ss: 0069
Process events/0 (pid: 3, threadinfo=c05e8000 task=c05cbb20)
Stack: c013c69f c043ef40 c01069f3 c05e9f40 c0117906 c05caf10 00002a8a
2e981339
       00004a2e ce57e000 c043ef40 00000000 c05e8000 00000000 c012b96f
00000000
       c05e9f74 00000000 c05caf10 c05e8000 c05e8000 c0106c60 c05e8000
c05caf00
Call Trace:
 [<c013c69f>] __get_free_pages+0x1f/0x40
 [<c01069f3>] __do_suspend+0x43/0x1e0
 [<c0117906>] __wake_up+0x46/0xa0
 [<c012b96f>] worker_thread+0x22f/0x340
 [<c0106c60>] __shutdown_handler+0x0/0x50
 [<c0117840>] default_wake_function+0x0/0x20
 [<c0117840>] default_wake_function+0x0/0x20
 [<c012b740>] worker_thread+0x0/0x340
 [<c013009a>] kthread+0xaa/0xb0
 [<c012fff0>] kthread+0x0/0xb0
 [<c01076b5>] kernel_thread_helper+0x5/0x10
Code: 89 54 24 10 8b 5c 24 04 8b 7c 24 08 83 c4 0c e9 3d f7 ff ff 90 8d
b6 00
00 00 8d bf 00 00 00 00 53 83 ec 04 8b 1d 40 bc 53 c0 <8b> 03 0f 18 00
90 81 f
0 bc 53 c0 74 20 90 8d b4 26 00 00 00



Why does xen think that an unprivileged guest has a reference to address
0 with the valid bit set?


                        -Kip

On Tue, 25 Jan 2005, Keir Fraser wrote:

> > Is it just me, or is the INSTALL_DIR definition in the Makefile
> > completely bogus?
> >
> > make install-kernels
> >
> > fails on:
> >
> > cp -a install -d -m0755/boot/* /boot/
> >
> > Changing INSTALL_DIR to the earlier definition fixed it for me.
> >
> > Nik
>
> Some of the recent build system 'cleanups' were broken. I've just done
> some testing and sanitisation.
>
>  -- Keir
>
>
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