linux_dsm_epyc7002/arch
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
..
alpha resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
arm resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
avr32 avr32: clean up memory allocation in at32_add_device_mci 2009-12-28 12:33:00 +01:00
blackfin blackfin,kgdb: Do not put PC in gdb_regs into retx. 2010-01-07 11:58:37 -06:00
cris resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
frv resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
h8300 Merge branch 'for-33' of git://repo.or.cz/linux-kbuild 2009-12-17 07:23:42 -08:00
ia64 x86/PCI: use host bridge _CRS info by default on 2008 and newer machines 2010-02-23 09:43:42 -08:00
m32r elf: kill USE_ELF_CORE_DUMP 2009-12-16 07:20:12 -08:00
m68k m68knommu: fix definitions of __pa() and __va() 2010-01-12 20:51:45 -08:00
m68knommu m68knommu: fix invalid flags on coldfire pit clocksource 2010-01-16 12:15:38 -08:00
microblaze microblaze: Invalidate dcache before enabling it 2010-02-08 11:39:18 +01:00
mips resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
mn10300 PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs 2010-02-23 09:43:31 -08:00
parisc resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
powerpc PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs 2010-02-23 09:43:31 -08:00
s390 [S390] Fix struct _lowcore layout. 2010-02-09 09:46:23 +01:00
score mm: make totalhigh_pages unsigned long 2010-01-11 09:34:03 -08:00
sh resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
sparc resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
um Unrot uml mconsole a bit 2010-01-14 09:05:26 -05:00
x86 x86/PCI: Prevent mmconfig memory corruption 2010-02-25 08:30:58 -08:00
xtensa resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
.gitignore
Kconfig hw-breakpoints: Fix hardware breakpoints -> perf events dependency 2009-12-18 13:11:51 +01:00