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[patch V2 04/28] x86/perf/intel/uncore: Add sanity checks for pci dev package id

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  [patch V2 04/28] x86/perf/intel/uncore: Add sanity checks for pci dev  package id Thomas Gleixner <tglx@linutronix.de> - 2016-02-22 12:20 +0100

#1339365 — [patch V2 04/28] x86/perf/intel/uncore: Add sanity checks for pci dev package id

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

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 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) {

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