Panic on reboot in very -current XEN3_DOM0 (both amd64 and i386)

[Johan Ihren <johani%johani.org@localhost>]

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I've been living with these since 4.99.68 or .69 (I think .67 was  
fine, at least for amd64 which was the only thing I ran then) and the  
panic is still there in 4.99.70 with source from an hour ago.

On reboot:

Stopped in pid 201.1 (mount_mfs) at ...
breakpoint() ...
panic() ...
kmem_poison_check()
kmem_backend_free()
amap_free()
uvm_unmap_detach()
uvmspace_free()
exit1()
sigexit()
postsig()
lwp_userret()
syscall()
...

Note #1: an i386 XEN3_DOM0 kernel produced exactly the same panic  
trace as the amd64 one.

Note #2: "halt" produces the same panic on amd64 but works ok on i386  
(it hangs after unmounting /, though, but that's another issue).

Note #3: GENERIC kernels (both amd64 and i386) from the same sources  
and running on the same userland works just fine.

Anyone else rebooting their DOM0s recently?

Regards,

Johan


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