[PATCH] try_to_unmap_cluster() passes out-of-bounds pte to pte_unmap()

2005-06-12T02:45:21+00:00

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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman Signed-off-by: Chris Wright

[PATCH] Fix get_unmapped_area sanity tests

2005-05-27T04:20:00+00:00

Fix get_unmapped_area sanity tests As noted by Chris Wright, we need to do the full range of tests regardless of whether MAP_FIXED is set or not, so re-organize get_unmapped_area() slightly to do the sanity checks unconditionally. Signed-off-by: Greg Kroah-Hartman Signed-off-by: Chris Wright

2.6.11 import

2005-05-12T16:59:06+00:00

kernel/git/stable/linux-stable.git/mm, branch linux-2.6.11.y

[PATCH] try_to_unmap_cluster() passes out-of-bounds pte to pte_unmap()

[PATCH] Fix get_unmapped_area sanity tests

2.6.11 import