[PATCH 3.18 21/93] scsi: sg: dont return bogus Sg_requests

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Johannes Thumshirn commit 48ae8484e9fc324b4968d33c585e54bc98e44d61 upstream. If the list search in sg_get_rq_mark() fails to find a valid request, we return a bogus

[PATCH 3.18 21/93] scsi: sg: dont return bogus Sg_requests

3.18-stable review patch. If anyone has any objections, please let me know. -- From: Johannes Thumshirn commit 48ae8484e9fc324b4968d33c585e54bc98e44d61 upstream. If the list search in sg_get_rq_mark() fails to find a valid request, we return a bogus element. This then can