The patch titled Subject: mm/vmstat.c: skip NR_TLB_REMOTE_FLUSH* properly has been added to the -mm tree. Its filename is mm-vmstat-skip-nr_tlb_remote_flush-properly.patch

This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-vmstat-skip-nr_tlb_remote_flush-... and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-vmstat-skip-nr_tlb_remote_flush-...

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------------------------------------------------------ From: Jann Horn jannh@google.com Subject: mm/vmstat.c: skip NR_TLB_REMOTE_FLUSH* properly

5dd0b16cdaff ("mm/vmstat: Make NR_TLB_REMOTE_FLUSH_RECEIVED available even on UP") made the availability of the NR_TLB_REMOTE_FLUSH* counters inside the kernel unconditional to reduce #ifdef soup, but (either to avoid showing dummy zero counters to userspace, or because that code was missed) didn't update the vmstat_array, meaning that all following counters would be shown with incorrect values.

This only affects kernel builds with CONFIG_VM_EVENT_COUNTERS=y && CONFIG_DEBUG_TLBFLUSH=y && CONFIG_SMP=n.

Link: http://lkml.kernel.org/r/20181001143138.95119-2-jannh@google.com Fixes: 5dd0b16cdaff ("mm/vmstat: Make NR_TLB_REMOTE_FLUSH_RECEIVED available even on UP") Signed-off-by: Jann Horn jannh@google.com Reviewed-by: Kees Cook keescook@chromium.org Reviewed-by: Andrew Morton akpm@linux-foundation.org Cc: Davidlohr Bueso dave@stgolabs.net Cc: Oleg Nesterov oleg@redhat.com Cc: Christoph Lameter clameter@sgi.com Cc: Roman Gushchin guro@fb.com Cc: Kemi Wang kemi.wang@intel.com Cc: Andy Lutomirski luto@kernel.org Cc: Ingo Molnar mingo@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/vmstat.c | 3 +++ 1 file changed, 3 insertions(+)

--- a/mm/vmstat.c~mm-vmstat-skip-nr_tlb_remote_flush-properly +++ a/mm/vmstat.c @@ -1275,6 +1275,9 @@ const char * const vmstat_text[] = { #ifdef CONFIG_SMP "nr_tlb_remote_flush", "nr_tlb_remote_flush_received", +#else + "", /* nr_tlb_remote_flush */ + "", /* nr_tlb_remote_flush_received */ #endif /* CONFIG_SMP */ "nr_tlb_local_flush_all", "nr_tlb_local_flush_one", _

Patches currently in -mm which might be from jannh@google.com are

proc-restrict-kernel-stack-dumps-to-root.patch mm-vmstat-fix-outdated-vmstat_text.patch mm-vmstat-skip-nr_tlb_remote_flush-properly.patch mm-vmstat-assert-that-vmstat_text-is-in-sync-with-stat_items_size.patch reiserfs-propagate-errors-from-fill_with_dentries-properly.patch