Suresh Siddha 9597134218 x86: fix PTE corruption issue while mapping RAM using /dev/mem ... Beschorner Daniel reported: > hwinfo problem since 2.6.28, showing this in the oops: > Corrupted page table at address 7fd04de3ec00 Also, PaX Team reported a regression with this commit: > commit 9542ada803 > Author: Suresh Siddha <suresh.b.siddha@intel.com> > Date: Wed Sep 24 08:53:33 2008 -0700 > > x86: track memtype for RAM in page struct This commit breaks mapping any RAM page through /dev/mem, as the reserve_memtype() was not initializing the return attribute type and as such corrupting the PTE entry that was setup with the return attribute type. Because of this bug, application mapping this RAM page through /dev/mem will die with "Corrupted page table at address xxxx" message in the kernel log and also the kernel identity mapping which maps the underlying RAM page gets converted to UC. Fix this by initializing the return attribute type before calling reserve_ram_pages_type() Reported-by: PaX Team <pageexec@freemail.hu> Reported-and-tested-by: Beschorner Daniel <Daniel.Beschorner@facton.com> Tested-and-Acked-by: PaX Team <pageexec@freemail.hu> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-01-21 18:42:32 +01:00
..
dump_pagetables.c
extable.c
fault.c	x86: avoid theoretical vmalloc fault loop	2009-01-12 19:24:21 +01:00
gup.c	x86: two trivial sparse annotations	2008-10-29 08:02:28 +01:00
highmem_32.c	Export kmap_atomic_pfn for DRM-GEM.	2008-10-18 07:10:12 +10:00
hugetlbpage.c
init_32.c	x86: fix assumed to be contiguous leaf page tables for kmap_atomic region (take 2)	2009-01-16 13:47:04 +01:00
init_64.c	x86: remove kernel_physical_mapping_init() from init section	2009-01-20 00:31:43 +01:00
iomap_32.c	x86: add iomap_atomic*()/iounmap_atomic() on 32-bit using fixmaps	2008-10-31 10:12:38 +01:00
ioremap.c	x86: fix assumed to be contiguous leaf page tables for kmap_atomic region (take 2)	2009-01-16 13:47:04 +01:00
k8topology_64.c	x86: k8 numa register active regions later	2009-01-06 13:21:21 +01:00
kmmio.c
Makefile	Merge branches 'tracing/ftrace', 'tracing/fastboot', 'tracing/nmisafe' and 'tracing/urgent' into tracing/core	2008-11-08 09:34:35 +01:00
memtest.c	x86: memtest fix use of reserve_early()	2008-10-22 17:08:06 +02:00
mmap.c
mmio-mod.c
numa_32.c	trivial: replace last usages of __FUNCTION__ in kernel	2009-01-07 15:48:54 -08:00
numa_64.c	x86: prepare for cpumask iterators to only go to nr_cpu_ids	2008-12-16 17:40:58 -08:00
pageattr-test.c
pageattr.c	x86: fix page attribute corruption with cpa()	2009-01-21 12:24:54 +01:00
pat.c	x86: fix PTE corruption issue while mapping RAM using /dev/mem	2009-01-21 18:42:32 +01:00
pf_in.c
pf_in.h
pgtable_32.c
pgtable.c
srat_32.c
srat_64.c	x86: prepare for cpumask iterators to only go to nr_cpu_ids	2008-12-16 17:40:58 -08:00
testmmiotrace.c