perf/x86/intel/uncore: Add sanity checks for PCI dev package id
authorThomas Gleixner <tglx@linutronix.de>
Mon, 22 Feb 2016 22:19:10 +0000 (22:19 +0000)
committerIngo Molnar <mingo@kernel.org>
Mon, 29 Feb 2016 08:35:14 +0000 (09:35 +0100)
The storage array is size limited, but misses a sanity check

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Harish Chegondi <harish.chegondi@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/20160222221010.929967806@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/events/intel/uncore.c

index 25e62037563e385cd9628d1511f894bc68c3a9d9..42ea435e5ead8b960ad720c5358a3c6fe4c5ecc3 100644 (file)
@@ -882,7 +882,7 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id
        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) {