Problem: Xen 3.3.1 with FreeBSD 8.0 RC1

[Hugo Silva]

Carsten Heesch wrote:
> Athough I seem to be talking to myself here, I have good news for RC2! 
> It works!
> Just did an "freebsd-update -R 8.0-RC2 upgrade". Both GENERIC and 
> XENHVM kernels work without any problems.
>
> Maybe somebody else can chime in an confirm that, too? Probably good 
> for the developers to see positive feedback, while 8.0-RELEASE is 
> coming closer :-)
>
>
> Cheers
> Carsten
>
>
> On 25 Oct 2009, at 00:31, Carsten Heesch wrote:
>
>>
>> I realised that it's still possible to use 8.0-BETA* as a target for 
>> freebsd-update. So I investigated a bit further. For whatever it's 
>> worth:
>>
>> The problems described earlier started with BETA-4.
>>
>> BETA-3 is fine with both GENERIC and XENHVM kernel, except that I see 
>> this on the console and in dmesg every now and then (with both kernels):
>>
>>
>> lock order reversal:
>> 1st 0xffffff8014810620 bufwait (bufwait) @ 
>> /usr/src/sys/kern/vfs_bio.c:2559
>> 2nd 0xffffff00015a7c00 dirhash (dirhash) @ 
>> /usr/src/sys/ufs/ufs/ufs_dirhash.c:285
>> KDB: stack backtrace:
>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
>> _witness_debugger() at _witness_debugger+0x2e
>> witness_checkorder() at witness_checkorder+0x81e
>> _sx_xlock() at _sx_xlock+0x55
>> ufsdirhash_acquire() at ufsdirhash_acquire+0x33
>> ufsdirhash_add() at ufsdirhash_add+0x19
>> ufs_direnter() at ufs_direnter+0x88b
>> ufs_makeinode() at ufs_makeinode+0x31c
>> VOP_CREATE_APV() at VOP_CREATE_APV+0x8d
>> vn_open_cred() at vn_open_cred+0x423
>> kern_openat() at kern_openat+0x179
>> syscall() at syscall+0x1af
>> Xfast_syscall() at Xfast_syscall+0xe1
>> --- syscall (5, FreeBSD ELF64, open), rip = 0x800e32dfc, rsp = 
>> 0x7fffffffe608, rbp = 0x1a4 ---
>>
>>
>> I though this might be XENHVM kernel related, but it happens with 
>> GENERIC kernel as well. Not sure if this is related to XEN at all.
>>
>>
>>
>> Cheers
>> Carsten
>>
>>
>>
>
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I grabbed the 8.0-RC2/amd64iso to give this a spin; no luck here, it 
hangs after "Trying to mount root from ufs:/dev/md0". Also, I confirm 
the panics on boot with RC1. It's gone with RC2, but as I said, it gets 
stuck (for me, at least).

My dom0 is NetBSD 5 / amd64.