Re: [RFC] IPMI state machine regression

[Corey Minyard]

On 08/21/2018 05:14 PM, Andrew Banman wrote:
> Dear IPMI supporters,
>
> We observe a window in IPMI BT's opportunistic get capabilities request,
> wherein GET_DEVICE_GUID and GET_DEVICE_ID requests may start while the BT state
> machine is in WR_CONSUME. Following this, the 0xD5 error code is forced in
> bt_start_transaction, IPMI fails to initialize, and the interface is torn down.
> There is no mechanism to retry bringing up the interface in open() /dev/ipmi.
> This leaves IPMI hosed until you reload modules. Looks to happen after we call
> schedule().

When was the latest kernel where this worked properly? Also, what 
hardware is this?

BTW, you can use the "hotmod" capability of the IPMI driver to add the 
device
dynamically.

-corey