On Sat, Nov 27, 2021 at 04:07:18PM -0800, Andrew Morton wrote: >On Fri, 26 Nov 2021 10:47:11 +0800 Calvin Zhang <[email protected]> >wrote: > >> Just like this: >> commit 620951e27457 ("mm/cma: make kmemleak ignore CMA regions"). >> >> Add kmemleak_ignore_phys() for CMA created from of reserved node. > >Could we please have a full, standalone changelog for this patch?
Yes, I will add. > >The 620951e27457 changelog says "Without this, the kernel crashes...". >Does your patch also fix a crash? If so under what circumstances and >should we backport this fix into -stable kernels? No crash occurred. 620951e27457 avoids crashes caused by accessing highmem and it was fixed later. Now kmemleak_alloc_phys() and kmemleak_ignore_phys() skip highmem. This patch is based on the point that CMA regions don't contain pointers to other kmemleak objects, and ignores CMA regions from reserved memory as what 620951e27457 did. -- Thanks Calvin _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
