On Sat, Oct 26, 2019 at 01:10:35PM +0000, Sasha Levin wrote:

Hi,

[This is an automated email]

This commit has been processed because it contains a -stable tag. The stable tag indicates that it's relevant for the following trees: 4.1+

The bot has tested the following trees: v5.3.7, v4.19.80, v4.14.150, v4.9.197, v4.4.197.

v5.3.7: Build OK! v4.19.80: Build failed! Errors:

v4.14.150: Failed to apply! Possible dependencies: 3c2c648842843 ("mm/page_alloc.c: fix typos in comments") 66e8b438bd5c7 ("mm/memblock.c: make the index explicit argument of for_each_memblock_type") c9e97a1997fbf ("mm: initialize pages on demand during boot")

v4.9.197: Failed to apply! Possible dependencies: 3c2c648842843 ("mm/page_alloc.c: fix typos in comments") 66e8b438bd5c7 ("mm/memblock.c: make the index explicit argument of for_each_memblock_type") c9e97a1997fbf ("mm: initialize pages on demand during boot")

v4.4.197: Failed to apply! Possible dependencies: 0a687aace3b8e ("mm,oom: do not loop !__GFP_FS allocation if the OOM killer is disabled") 0caeef63e6d2f ("libnvdimm: Add a poison list and export badblocks") 0e749e54244ee ("dax: increase granularity of dax_clear_blocks() operations") 34c0fd540e79f ("mm, dax, pmem: introduce pfn_t") 3c2c648842843 ("mm/page_alloc.c: fix typos in comments") 3da88fb3bacfa ("mm, oom: move GFP_NOFS check to out_of_memory") 4b94ffdc4163b ("x86, mm: introduce vmem_altmap to augment vmemmap_populate()") 5020e285856cb ("mm, oom: give __GFP_NOFAIL allocations access to memory reserves") 52db400fcd502 ("pmem, dax: clean up clear_pmem()") 66e8b438bd5c7 ("mm/memblock.c: make the index explicit argument of for_each_memblock_type") 7cf91a98e607c ("mm/compaction: speed up pageblock_pfn_to_page() when zone is contiguous") 87ba05dff3510 ("libnvdimm: don't fail init for full badblocks list") 8c9c1701c7c23 ("mm/memblock: introduce for_each_memblock_type()") 9476df7d80dfc ("mm: introduce find_dev_pagemap()") ad9a8bde2cb19 ("libnvdimm, pmem: move definition of nvdimm_namespace_add_poison to nd.h") b2e0d1625e193 ("dax: fix lifetime of in-kernel dax mappings with dax_map_atomic()") b95f5f4391fad ("libnvdimm: convert to statically allocated badblocks") ba6c19fd113a3 ("include/linux/memblock.h: Clean up code for several trivial details") c9e97a1997fbf ("mm: initialize pages on demand during boot")

NOTE: The patch will not be queued to stable trees until it is upstream.

How should we proceed with this patch?

What were the 4.19.80 build errors?

For the older kernels, it would have to be confirmed those kernels are definietly affected. The test machines I tried fails to even boot on those kernels so I need to find a NUMA machine that is old enough to boot those kernels and confirmed affected by the bug before determining what the backport needs to look like.