src/patches/suse-2.6.27.25/patches.arch/s390-03-09-zfcp-oops-during-target-scan.patch

   1 From: Gerald Schaefer <geraldsc@de.ibm.com>
   2 Subject: zfcp: prevent SCSI target scan for vanished rport
   3 References: bnc#440610,LTC#49373
   4
   5 Symptom:     Oops unable to handle ptr dereference
   6 Problem:     A rport might be referenced eventhough it vanished
   7 Solution:    Verify that rport is still existant and online
   8
   9 Acked-by: John Jolly <jjolly@suse.de>
  10 ---
  11  drivers/s390/scsi/zfcp_erp.c |    4 +++-
  12  1 file changed, 3 insertions(+), 1 deletion(-)
  13
  14 Index: linux-sles11/drivers/s390/scsi/zfcp_erp.c
  15 ===================================================================
  16 --- linux-sles11.orig/drivers/s390/scsi/zfcp_erp.c
  17 +++ linux-sles11/drivers/s390/scsi/zfcp_erp.c
  18 @@ -1187,7 +1187,9 @@ static void zfcp_erp_scsi_scan(struct wo
  19                 container_of(work, struct zfcp_erp_add_work, work);
  20         struct zfcp_unit *unit = p->unit;
  21         struct fc_rport *rport = unit->port->rport;
  22 -       scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
  23 +
  24 +       if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
  25 +               scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
  26                          scsilun_to_int((struct scsi_lun *)&unit->fcp_lun), 0);
  27         atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
  28         zfcp_unit_put(unit);