William Lee Irwin III cafdd8ba08 [PATCH] try_to_unmap_cluster() passes out-of-bounds pte to pte_unmap() ... try_to_unmap_cluster() does: for (pte = pte_offset_map(pmd, address); address < end; pte++, address += PAGE_SIZE) { ... } pte_unmap(pte); It may take a little staring to notice, but pte can actually fall off the end of the pte page in this iteration, which makes life difficult for kmap_atomic() and the users not expecting it to BUG(). Of course, we're somewhat lucky in that arithmetic elsewhere in the function guarantees that at least one iteration is made, lest this force larger rearrangements to be made. This issue and patch also apply to non-mm mainline and with trivial adjustments, at least two related kernels. Discovered during internal testing at Oracle. Signed-off-by: William Irwin <wli@holomorphy.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2005-05-24 20:08:13 -07:00
..
bootmem.c
fadvise.c
filemap.c
fremap.c
highmem.c
hugetlb.c
internal.h
madvise.c
Makefile
memory.c
mempolicy.c
mempool.c
mincore.c
mlock.c
mmap.c
mprotect.c
mremap.c
msync.c
nommu.c
oom_kill.c
page_alloc.c
page_io.c
page-writeback.c
pdflush.c
prio_tree.c
readahead.c
rmap.c	[PATCH] try_to_unmap_cluster() passes out-of-bounds pte to pte_unmap()	2005-05-24 20:08:13 -07:00
shmem.c
slab.c
swap_state.c
swap.c
swapfile.c
thrash.c
tiny-shmem.c
truncate.c
vmalloc.c
vmscan.c