[SCSI] lpfc driver 8.0.30 : fix get_stats panic
Fix panic in lpfc_get_stats()
Symptoms: Panic on sysfs stats access
Cause: In lpfc_get_stats() we are writing to memory that we do not
own.
Fix: Fix our stats structure allocation. Embed phba->link_stats in
struct lpfc_hba and stop treating it like rogue structure.
Note: Embedding midlayer/transport structure in our structure caused
need for more files to include midlayer/transport headers.
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 3cea928..f37b764 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -988,8 +988,7 @@
{
struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0];
struct lpfc_sli *psli = &phba->sli;
- struct fc_host_statistics *hs =
- (struct fc_host_statistics *)phba->link_stats;
+ struct fc_host_statistics *hs = &phba->link_stats;
LPFC_MBOXQ_t *pmboxq;
MAILBOX_t *pmb;
int rc=0;
@@ -1020,6 +1019,8 @@
return NULL;
}
+ memset(hs, 0, sizeof (struct fc_host_statistics));
+
hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
hs->tx_words = (pmb->un.varRdStatus.xmitByteCnt * 256);
hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;