4.17-stable review patch. If anyone has any objections, please let me know.
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From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit 27e833dabab74ee665e487e291c9afc6d71effba ]
If we had more than 32 megaraid cards then it would cause memory corruption. That's not likely, of course, but it's handy to enforce it and make the static checker happy.
Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/megaraid.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -4199,6 +4199,9 @@ megaraid_probe_one(struct pci_dev *pdev, int irq, i, j; int error = -ENODEV;
+ if (hba_count >= MAX_CONTROLLERS) + goto out; + if (pci_enable_device(pdev)) goto out; pci_set_master(pdev);