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SCSI fixes on 20160708

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Three fixes.  One is the qla24xx MSI regression, one is a theoretical
 problem over blacklist matching, which would bite USB badly if it ever
 triggered and one is a system hang with a particular type of IPR
 device.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three fixes.  One is the qla24xx MSI regression, one is a theoretical
  problem over blacklist matching, which would bite USB badly if it ever
  triggered and one is a system hang with a particular type of IPR
  device"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  qla2xxx: Fix NULL pointer deref in QLA interrupt
  SCSI: fix new bug in scsi_dev_info_list string matching
  ipr: Clear interrupt on croc/crocodile when running with LSI
This commit is contained in:
Linus Torvalds 2016-07-08 18:59:46 -07:00
commit ee40fb2948
3 changed files with 8 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/scsi/ipr.c
View File

@ -10093,6 +10093,7 @@ static int ipr_probe_ioa(struct pci_dev *pdev,
ioa_cfg->intr_flag = IPR_USE_MSI;
else {
ioa_cfg->intr_flag = IPR_USE_LSI;
ioa_cfg->clear_isr = 1;
ioa_cfg->nvectors = 1;
dev_info(&pdev->dev, "Cannot enable MSI.\n");
}

2
drivers/scsi/qla2xxx/qla_isr.c
View File

@ -2548,7 +2548,7 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha,
if (!vha->flags.online)
return;
if (rsp->msix->cpuid != smp_processor_id()) {
if (rsp->msix && rsp->msix->cpuid != smp_processor_id()) {
/* if kernel does not notify qla of IRQ's CPU change,
* then set it here.
*/

10
drivers/scsi/scsi_devinfo.c
View File

@ -429,7 +429,7 @@ static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
* here, and we don't know what device it is
* trying to work with, leave it as-is.
*/
vmax = 8; /* max length of vendor */
vmax = sizeof(devinfo->vendor);
vskip = vendor;
while (vmax > 0 && *vskip == ' ') {
vmax--;
@ -439,7 +439,7 @@ static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
while (vmax > 0 && vskip[vmax - 1] == ' ')
--vmax;
mmax = 16; /* max length of model */
mmax = sizeof(devinfo->model);
mskip = model;
while (mmax > 0 && *mskip == ' ') {
mmax--;
@ -455,10 +455,12 @@ static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
* Behave like the older version of get_device_flags.
*/
if (memcmp(devinfo->vendor, vskip, vmax) ||
devinfo->vendor[vmax])
(vmax < sizeof(devinfo->vendor) &&
devinfo->vendor[vmax]))
continue;
if (memcmp(devinfo->model, mskip, mmax) ||
devinfo->model[mmax])
(mmax < sizeof(devinfo->model) &&
devinfo->model[mmax]))
continue;
return devinfo;
} else {