RE: [Xen-devel] crash on starting new domain

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

> -----Original Message-----
> From: Ian Pratt [mailto:m+Ian.Pratt@xxxxxxxxxxxx]
> Sent: Tuesday, 5 April 2005 16:58
> To: James Harper; xen-devel@xxxxxxxxxxxxxxxxxxx
> Cc: ian.pratt@xxxxxxxxxxxx; ian.pratt@xxxxxxxxxxxx
> Subject: RE: [Xen-devel] crash on starting new domain
> 
> 
> > Hmmm... they were built while running 2.6.9, but for 2.6.10.
> > The iscsi Makefile uses a lot of calls to uname but I'm
> > pretty sure I got all the places where it is used. It runs
> > fine up until the point where the new domain starts.
> 
> Are you sure they were built with ARCH=xen ?

Ah... possibly not. That will only matter if they use privileged
instructions won't it? I'll recompile just to be sure and try again.

> 
> > Could there be some interaction between xen vbd support and
> > iscsi? It's always worked in the past but I've jumped forward
> > a few versions of everything. Maybe I'll try not using disk
> > in xenu and make a barebones initrd..
> 
> There's been no significant changes to the vbd code in 2.0.5.
> 2.0-testing (proto 2.0.6) has some new stuff that I doubt has been
> tested on iSCSI, but is probably OK.

I just ran it again and got a slightly different oops, but again just
when xenu is starting up its filesystem:

TCP: Hash tables configured (established 8192 bind 16384)
NET: Registered protocol family 1
NET: Registered protocol family 17
EXT3-fs: INFO: recovery required on readonly filesystem.
EXT3-fs: write access will be enabled during recovery.
Segmentation fault
xen1:~# Apr  5 17:08:56 xen1 kernel: br1: port 2(vif3.0) entering
learning state
Apr  5 17:08:56 xen1 kernel: Unable to handle kernel paging request at
virtual address c7c78000
Apr  5 17:08:56 xen1 kernel:  printing eip:
Apr  5 17:08:56 xen1 kernel: c01423bf
Apr  5 17:08:56 xen1 kernel: *pde = ma 0141d067 pa 0001d067
Apr  5 17:08:56 xen1 kernel: *pte = ma 00000000 pa 55555000
Apr  5 17:08:56 xen1 kernel:  [handle_mm_fault+448/480]
handle_mm_fault+0x1c0/0x1e0
Apr  5 17:08:56 xen1 kernel:  [do_page_fault+412/1683]
do_page_fault+0x19c/0x693
Apr  5 17:08:56 xen1 kernel:  [tty_write+527/624] tty_write+0x20f/0x270
Apr  5 17:08:56 xen1 kernel:  [write_chan+0/544] write_chan+0x0/0x220
Apr  5 17:08:56 xen1 kernel:  [sys_recv+51/64] sys_recv+0x33/0x40
Apr  5 17:08:56 xen1 kernel:  [sys_socketcall+356/608]
sys_socketcall+0x164/0x260
Apr  5 17:08:56 xen1 kernel:  [sys_write+81/128] sys_write+0x51/0x80
Apr  5 17:08:56 xen1 kernel:  [page_fault+59/64] page_fault+0x3b/0x40
Apr  5 17:08:56 xen1 kernel: Oops: 0002 [#1]
Apr  5 17:08:56 xen1 kernel: Modules linked in: nfsd exportfs lockd
sunrpc tlan 8021q loop ext3 jbd mbcache crc32c libcrc32c iscsi_sfnet
scsi_transport_iscsi dm_mod sd_mod scsi_mod e1000 eepro100
Apr  5 17:08:56 xen1 kernel: CPU:    0
Apr  5 17:08:56 xen1 kernel: EIP:    0061:[do_wp_page+207/1024]    Not
tainted VLI
Apr  5 17:08:56 xen1 kernel: EFLAGS: 00011287   (2.6.10-xen0)
Apr  5 17:08:56 xen1 kernel: EIP is at do_wp_page+0xcf/0x400
Apr  5 17:08:56 xen1 kernel: eax: c1002020   ebx: c10f8f00   ecx:
00000400   edx: c1000000
Apr  5 17:08:56 xen1 kernel: esi: c0c66000   edi: c7c78000   ebp:
c1018cc0   esp: c28ffe94
Apr  5 17:08:56 xen1 kernel: ds: 0069   es: 0069   ss: 0069
Apr  5 17:08:56 xen1 kernel: Process python (pid: 3896,
threadinfo=c28fe000 task=c4f8f5c0)
Apr  5 17:08:56 xen1 kernel: Stack: c4abf5b8 c5fa6840 c28fff34 00000400
00000000 c10f8f00 c4abf5b8 c63870e0
Apr  5 17:08:56 xen1 kernel:        403f3000 00000001 c0143580 c63870e0
c4abf5b8 403f3000 c07bffcc c2648400
Apr  5 17:08:56 xen1 kernel:        02066065 00000000 c63870e0 c638710c
00000007 c4abf5b8 c011340c c63870e0
Apr  5 17:08:56 xen1 kernel: Call Trace:
Apr  5 17:08:56 xen1 kernel:  [handle_mm_fault+448/480]
handle_mm_fault+0x1c0/0x1e0
Apr  5 17:08:56 xen1 kernel:  [do_page_fault+412/1683]
do_page_fault+0x19c/0x693
Apr  5 17:08:56 xen1 kernel:  [tty_write+527/624] tty_write+0x20f/0x270

Thanks

James

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