On Fri, Feb 27, 2026 at 08:25:46AM -0500, Mathieu Desnoyers wrote:
> On 2026-02-27 08:11, Heiko Carstens wrote:
> > This seems to happen because the return value of get_rss_stat_items_size()
> > is
> > larger than PERCPU_COUNTER_TREE_ITEMS_STATIC_SIZE:
> >
> > PERCPU_COUNTER_TREE_ITEMS_STATIC_SIZE: 18688
> > get_rss_stat_items_size(): 21504
...
> Which fails to account for NR_MM_COUNTERS. Does the following fix your issue ?
>
> #define MM_STRUCT_FLEXIBLE_ARRAY_INIT
> \
> {
> \
> [0 ... (PERCPU_COUNTER_TREE_ITEMS_STATIC_SIZE * NR_MM_COUNTERS) +
> sizeof(cpumask_t) + MM_CID_STATIC_SIZE - 1] = 0 \
> }
Yes, this works.
