linux-next: build failure after merge of the akpm-current tree

Stephen Rothwell
2021-05-12T05:28:11Z

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Hi all,

As Randy also reported ...

After merging the akpm-current tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

mm/slab_common.c:764:8: error: array index in initializer exceeds array bounds
764 | .name[KMALLOC_RECLAIM] = "kmalloc-rcl-" #__short_size, \
| ^~~~~~~~~~~~~~~
mm/slab_common.c:776:2: note: in expansion of macro 'INIT_KMALLOC_INFO'
776 | INIT_KMALLOC_INFO(0, 0),
| ^~~~~~~~~~~~~~~~~
mm/slab_common.c:756:39: error: array index in initializer exceeds array bounds
756 | #define KMALLOC_CGROUP_NAME(sz) .name[KMALLOC_CGROUP] = "kmalloc-cg-" #sz,
| ^~~~~~~~~~~~~~
mm/slab_common.c:765:2: note: in expansion of macro 'KMALLOC_CGROUP_NAME'
765 | KMALLOC_CGROUP_NAME(__short_size) \
| ^~~~~~~~~~~~~~~~~~~

and more

Caused by commits

4d57437a3d3c ("mm: memcg/slab: create a new set of kmalloc-cg-<n> caches")
0727bf117622 ("mm: memcg/slab: don't create kmalloc-cg caches with cgroup.memory=nokmem")
d795c307bd3a ("mm: memcg/slab: disable cache merging for KMALLOC_NORMAL caches")

At least they are the commits I have reverted to fix this.

--
Cheers,
Stephen Rothwell

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