Thomas Gleixner bb8d41330c x86/PCI: Prevent mmconfig memory corruption ... commit ff097ddd4 (x86/PCI: MMCONFIG: manage pci_mmcfg_region as a list, not a table) introduced a nasty memory corruption when pci_mmcfg_list is empty. pci_mmcfg_check_end_bus_number() dereferences pci_mmcfg_list.prev even when the list is empty. The following write hits some variable near to pci_mmcfg_list. Further down a similar problem exists, where cfg->list.next is dereferenced unconditionally and a comparison with some variable near to pci_mmcfg_list happens. Add a check for the last element into the for_each_entry() loop and remove all the other crappy logic which is just a leftover of the old array based code which was replaced by the list conversion. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: stable@kernel.org Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>		2010-02-25 08:30:58 -08:00
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Makefile	…
acpi.c	x86/PCI: use host bridge _CRS info by default on 2008 and newer machines	2010-02-23 09:43:42 -08:00
amd_bus.c	…
bus_numa.c	PCI: augment bus resource table with a list	2010-02-23 09:43:37 -08:00
bus_numa.h	PCI: augment bus resource table with a list	2010-02-23 09:43:37 -08:00
common.c	x86/PCI: use host bridge _CRS info by default on 2008 and newer machines	2010-02-23 09:43:42 -08:00
direct.c	…
early.c	…
fixup.c	…
i386.c	…
init.c	…
irq.c	…
legacy.c	…
mmconfig-shared.c	x86/PCI: Prevent mmconfig memory corruption	2010-02-25 08:30:58 -08:00
mmconfig_32.c	…
mmconfig_64.c	…
numaq_32.c	…
olpc.c	…
pcbios.c	…
visws.c	…