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[SCSI] lpfc driver 8.0.30 : fix get_stats panic

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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>
This commit is contained in:
James.Smart@Emulex.Com 2005-08-10 15:03:01 -04:00 committed by James Bottomley
parent 69859dc477
commit f888ba3ce7
7 changed files with 14 additions and 8 deletions
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5
drivers/scsi/lpfc/lpfc.h
View file

@ -342,9 +342,6 @@ struct lpfc_hba {
#define VPD_MASK 0xf /* mask for any vpd data */
struct timer_list els_tmofunc;
void *link_stats;
/*
* stat counters
*/
@ -370,6 +367,8 @@ struct lpfc_hba {
struct list_head freebufList;
struct list_head ctrspbuflist;
struct list_head rnidrspbuflist;
struct fc_host_statistics link_stats;
};

5
drivers/scsi/lpfc/lpfc_attr.c
View file

@ -988,8 +988,7 @@ lpfc_get_stats(struct Scsi_Host *shost)
{
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 @@ lpfc_get_stats(struct Scsi_Host *shost)
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;

1
drivers/scsi/lpfc/lpfc_ct.c
View file

@ -29,6 +29,7 @@
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw.h"
#include "lpfc_sli.h"

4
drivers/scsi/lpfc/lpfc_init.c
View file

@ -1339,14 +1339,12 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
if (pci_request_regions(pdev, LPFC_DRIVER_NAME))
goto out_disable_device;
host = scsi_host_alloc(&lpfc_template,
sizeof (struct lpfc_hba) + sizeof (unsigned long));
host = scsi_host_alloc(&lpfc_template, sizeof (struct lpfc_hba));
if (!host)
goto out_release_regions;
phba = (struct lpfc_hba*)host->hostdata;
memset(phba, 0, sizeof (struct lpfc_hba));
phba->link_stats = (void *)&phba[1];
phba->host = host;
phba->fc_flag |= FC_LOADING;

3
drivers/scsi/lpfc/lpfc_mbox.c
View file

@ -23,6 +23,9 @@
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_disc.h"

3
drivers/scsi/lpfc/lpfc_mem.c
View file

@ -23,6 +23,9 @@
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_disc.h"

1
drivers/scsi/lpfc/lpfc_sli.c
View file

@ -27,6 +27,7 @@
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw.h"
#include "lpfc_sli.h"