On Wed, Dec 09, 2020 at 06:48:47PM +0100, Vlastimil Babka wrote: > On 12/9/20 2:13 AM, paul...@kernel.org wrote: > > From: "Paul E. McKenney" <paul...@kernel.org> > > > > This commit makes mem_dump_obj() call out NULL and zero-sized pointers > > specially instead of classifying them as non-paged memory. > > > > Cc: Christoph Lameter <c...@linux.com> > > Cc: Pekka Enberg <penb...@kernel.org> > > Cc: David Rientjes <rient...@google.com> > > Cc: Joonsoo Kim <iamjoonsoo....@lge.com> > > Cc: Andrew Morton <a...@linux-foundation.org> > > Cc: <linux...@kvack.org> > > Reported-by: Andrii Nakryiko <and...@kernel.org> > > Signed-off-by: Paul E. McKenney <paul...@kernel.org> > > Acked-by: Vlastimil Babka <vba...@suse.cz>
Applied, thank you! Thanx, Paul > > --- > > mm/util.c | 7 ++++++- > > 1 file changed, 6 insertions(+), 1 deletion(-) > > > > diff --git a/mm/util.c b/mm/util.c > > index d0e60d2..8c2449f 100644 > > --- a/mm/util.c > > +++ b/mm/util.c > > @@ -985,7 +985,12 @@ int __weak memcmp_pages(struct page *page1, struct > > page *page2) > > void mem_dump_obj(void *object) > > { > > if (!virt_addr_valid(object)) { > > - pr_cont(" non-paged (local) memory.\n"); > > + if (object == NULL) > > + pr_cont(" NULL pointer.\n"); > > + else if (object == ZERO_SIZE_PTR) > > + pr_cont(" zero-size pointer.\n"); > > + else > > + pr_cont(" non-paged (local) memory.\n"); > > return; > > } > > if (kmem_valid_obj(object)) { > > >