RELENG_7 core dump (sgread)

[Scott Long]

Oleg Lomaka wrote:
> I'm sorry for a long delay.
> Kernel failed to compile after patch.
> I've got more info about crash. It looks like it happening when I plug 
> in USB HDD. In some cases I can plug it in and make mount, in some cases 
> I just plug it in, and core dumps.
> 

Sorry about the typo, take the same patch and change the "sc" on line 
366 to "softc".

Panic due to USB drive insertion and removal are unfortunately expected
right now.  I'm looking into it.  However, please do test the sg patch;
the panic that you originally reported is not related to the known 
problems with USB.

Scott