kern/183337: run_interrupt_driven_hooks: still waiting after second for xenbusb_nop_confighook_cb

[Rubets Anton]

>Number:         183337
>Category:       kern
>Synopsis:       run_interrupt_driven_hooks: still waiting after second for xenbusb_nop_confighook_cb
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          update
>Submitter-Id:   current-users
>Arrival-Date:   Sat Oct 26 15:30:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Rubets Anton
>Release:        Freebsd amd64, i386 - 9.0, 9.1, 9.2,10
>Organization:
NTUU KPI IASA SP
>Environment:
FreeBSD gw 9.2-RC4 FreeBSD 9.2-RC4
10 Beta (cant do uname -a, because i cant boot)
>Description:
After updating system for XEN 
In 9.x
Make buildkernel KERNCONF=XENHVM
Make installkernel KERNCONF=XENHVM
reboot
In boot i take
run_interrupt_driven_hooks: still waiting after 60 seconds for xenbusb_nop_confighook_cb 


In 10 
>From cd on xen i take
run_interrupt_driven_hooks: still waiting after 60 seconds for xenbusb_nop_confighook_cb 

This problem repeated on different machines and xen installations(intel, amd, x86, x64).

>How-To-Repeat:
On 9.x freebsd build and install XENHVM kernel
On 10 try to boot
>Fix:
Fast fix for work (I don't know if its stable )

In 9.x
Fix:
In /usr/src/sys/kern/subr_autoconf.c
comment or remove loop

/* while (!TAILQ_EMPTY(&intr_config_hook_list)) { */ 
.. There no need to comment
/* { */

And then rebuild\build kernel

>Release-Note:
>Audit-Trail:
>Unformatted: