CVE request: kernel: bfa driver sysfs crash

[Eugene Teo <eugene () redhat com>]

The port data structure related to fc_host statistics collection is not
initialized. This causes system crash when reading the fc_host 
statistics. The fix is to initialize port structure during driver attach.

This can be triggered by reading the fc statistics files under
/sys/class/fc_host/host#/statistics.

A bfa adapter must be present in the system for the problem to occur.

Upstream commit:
http://git.kernel.org/linus/7873ca4e4401f0ecd8868bf1543113467e6bae61

Reference:
https://bugzilla.redhat.com/show_bug.cgi?id=661182
http://www.spinics.net/lists/linux-scsi/msg43772.html

Thanks, Eugene