RE: [Xen-users] kernel panic on boot of dom0

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

Are you importing the block device as scsi? e.g. sda? 

If so, try IDE hda.

The scsi major has already been grabbed. 

Ian  

> -----Original Message-----
> From: Ian P. Christian [mailto:pookey@xxxxxxxxxxxx] 
> Sent: 18 November 2005 15:21
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Cc: Ian Pratt; Ernst Bachmann; xen-devel; ian.pratt@xxxxxxxxxxxx
> Subject: Re: [Xen-users] kernel panic on boot of dom0
> 
> On Friday 18 November 2005 14:59, Ian P. Christian wrote:
> > I'll recompile a kernel starting with teh defaults specified in 
> > xen0_defconfig, and see how things go.
> 
> Well, no opps on boot now, but having attempted to start a 
> domU, I'm seeing what apepars to the the same opps as before.
> 
> Thanks for your help people, much appreciated
> 
> # xm create /etc/xen/auto/ttylinux -c
> Using config file "/etc/xen/auto/ttylinux".
> Started domain ttylinux
> Linux version 2.6.12.6.5-xen (root@bb3) (gcc version 3.4.4 
> (Gentoo 3.4.4-r1, ssp-3.4.4-1.0, pie-8.7.8)) #2 SMP Fri Nov 
> 18 15:47:14 GMT 2005 BIOS-provided physical RAM map:
>  Xen: 0000000000000000 - 0000000004000000 (usable) 0MB 
> HIGHMEM available.
> 72MB LOWMEM available.
> IRQ lockup detection disabled
> Built 1 zonelists
> Kernel command line:  ip=1.2.3.4:1.2.3.4::::eth0:off 
> root=/dev/sda1 ro Initializing CPU#0 PID hash table entries: 
> 512 (order: 9, 8192 bytes) Xen reported: 2800.104 MHz processor.
> Dentry cache hash table entries: 16384 (order: 4, 65536 
> bytes) Inode-cache hash table entries: 8192 (order: 3, 32768 
> bytes) vmalloc area: c5000000-fb7fe000, maxmem 34000000
> Memory: 62320k/73728k available (1369k kernel code, 3072k 
> reserved, 404k data, 128k init, 0k highmem) Checking if this 
> processor honours the WP bit even in supervisor mode... Ok.
> Mount-cache hash table entries: 512
> CPU: Trace cache: 12K uops, L1 D cache: 16K
> CPU: L2 cache: 1024K
> Enabling fast FPU save and restore... done.
> Enabling unmasked SIMD FPU exception support... done.
> Checking 'hlt' instruction... disabled
> Brought up 1 CPUs
> NET: Registered protocol family 16
> xenbus_probe_init
> Brought up 1 CPUs
> xen_mem: Initialising balloon driver.
> SCSI subsystem initialized
> Grant table initialized
> Number of CPUs sharing cache didn't match any known set of 
> CPUs Number of CPUs sharing cache didn't match any known set 
> of CPUs Initializing Cryptographic API io scheduler noop 
> registered io scheduler anticipatory registered io scheduler 
> deadline registered io scheduler cfq registered RAMDISK 
> driver initialized: 16 RAM disks of 4096K size 1024 blocksize 
> Xen virtual console successfully installed as tty1 
> Event-channel device installed.
> xen_net: Initialising virtual ethernet driver.
> NET: Registered protocol family 2
> Registering block device major 8
> register_blkdev: cannot get major 8 for sd
> xen_blk: can't get major 8 with name sd
> Unable to handle kernel NULL pointer dereference at virtual 
> address 00000104  printing eip:
> c01dfaa7
> *pde = ma 00000000 pa 55555000
> Oops: 0002 [#1]
> SMP
> Modules linked in:
> CPU:    0
> EIP:    0061:[<c01dfaa7>]    Not tainted VLI
> EFLAGS: 00010296   (2.6.12.6.5-xen)
> EIP is at blk_start_queue+0x8/0x4f
> eax: 00000000   ebx: 00000000   ecx: 00000000   edx: fbfc4000
> esi: c039c004   edi: c03fbc23   ebp: c0345f6c   esp: c0345efc
> ds: 007b   es: 007b   ss: 0069
> Process xenwatch (pid: 7, threadinfo=c0344000 task=c032fa20)
> Stack: 00000000 c039c000 c01f107a 00000000 c039c000 c01f1aa3 
> c039c000 00000000
>        00000801 00000000 00000200 c039c000 c02640d1 c0345f48 
> c026a147 c0263cc7
>        c0345f4c 00000000 00007d00 00000000 00000200 c0345f8c 
> c0345f98 c03fbac0 Call Trace:
>  [<c01f107a>] kick_pending_request_queues+0x1e/0x33
>  [<c01f1aa3>] watch_for_status+0xed/0x135  [<c01ef665>] 
> xenwatch_thread+0x10e/0x133  [<c01317f2>] 
> autoremove_wake_function+0x0/0x57  [<c01317f2>] 
> autoremove_wake_function+0x0/0x57  [<c01ef557>] 
> xenwatch_thread+0x0/0x133  [<c0131324>] kthread+0xba/0xf0  
> [<c013126a>] kthread+0x0/0xf0  [<c0107911>] 
> kernel_thread_helper+0x5/0xb
> Code: d2 75 01 c3 89 44 24 04 8b 48 60 ff e1 8b 44 24 04 8b 
> 48 60 ff e1 81 44
> 24 04 a0 00 00 00 e9 95 24 00 00 53 83 ec 04 8b 5c 24 0c <f0> 
> 0f ba b3 04 01 00 00 02 f0 0f ba ab 04 01 00 00 06 19 c0 85
>  <6>IP: routing cache hash table of 512 buckets, 4Kbytes TCP 
> established hash table entries: 4096 (order: 3, 32768 bytes) 
> TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
> TCP: Hash tables configured (established 4096 bind 4096)
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> VFS: Cannot open root device "sda1" or unknown-block(0,0) 
> Please append a correct "root=" boot option Kernel panic - 
> not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
> 
> -- 
> Ian P. Christian ~ http://pookey.co.uk
> 

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