[patch V3 04/28] x86/perf/intel/uncore: Add sanity checks for pci dev package id

From: Thomas Gleixner
Date: Mon Feb 22 2016 - 17:28:42 EST


The storage array is size limited, but misses a sanity check

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/perf_event_intel_uncore.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
===================================================================
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
@@ -882,7 +882,7 @@ static int uncore_pci_probe(struct pci_d
int phys_id, ret;

phys_id = uncore_pcibus_to_physid(pdev->bus);
- if (phys_id < 0)
+ if (phys_id < 0 || phys_id >= UNCORE_SOCKET_MAX)
return -ENODEV;

if (UNCORE_PCI_DEV_TYPE(id->driver_data) == UNCORE_EXTRA_PCI_DEV) {