3.16.50-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Juergen Gross <[email protected]> commit 1cf38741308c64d08553602b3374fb39224eeb5a upstream. xen_cleanhighmap() is operating on level2_kernel_pgt only. The upper bound of the loop setting non-kernel-image entries to zero should not exceed the size of level2_kernel_pgt. Reported-by: Linus Torvalds <[email protected]> Signed-off-by: Juergen Gross <[email protected]> Signed-off-by: David Vrabel <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- arch/x86/xen/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1187,7 +1187,7 @@ static void __init xen_cleanhighmap(unsi /* NOTE: The loop is more greedy than the cleanup_highmap variant. * We include the PMD passed in on _both_ boundaries. */ - for (; vaddr <= vaddr_end && (pmd < (level2_kernel_pgt + PAGE_SIZE)); + for (; vaddr <= vaddr_end && (pmd < (level2_kernel_pgt + PTRS_PER_PMD)); pmd++, vaddr += PMD_SIZE) { if (pmd_none(*pmd)) continue;
