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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>		20 years ago
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Makefile	…
bootmem.c	…
fadvise.c	…
filemap.c	[PATCH] fix for __generic_file_aio_read() to return 0 on EOF	20 years ago
fremap.c	…
highmem.c	…
hugetlb.c	…
internal.h	…
madvise.c	…
memory.c	[PATCH] do_swap_page() can map random data if swap read fails	20 years ago
mempolicy.c	…
mempool.c	…
mincore.c	…
mlock.c	…
mmap.c	Fix get_unmapped_area sanity tests	20 years ago
mprotect.c	Linux-2.6.12-rc2	20 years ago
mremap.c	[PATCH] mm acct accounting fix	20 years ago
msync.c	…
nommu.c	[PATCH] mm/nommu.c: try to fix __vmalloc	20 years ago
oom_kill.c	…
page-writeback.c	[PATCH] DocBook: fix some descriptions	20 years ago
page_alloc.c	[IA64] Export node_online_map and node_possible_map	20 years ago
page_io.c	…
pdflush.c	…
prio_tree.c	…
readahead.c	…
rmap.c	[PATCH] try_to_unmap_cluster() passes out-of-bounds pte to pte_unmap()	20 years ago
shmem.c	…
slab.c	…
swap.c	…
swap_state.c	…
swapfile.c	[PATCH] swapout oops fix	20 years ago
thrash.c	…
tiny-shmem.c	…
truncate.c	[PATCH] DocBook: fix some descriptions	20 years ago
vmalloc.c	[PATCH] x86_64: Fixed guard page handling again in iounmap	20 years ago
vmscan.c	…