diff options
| -rw-r--r-- | mm/percpu.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index c7206d06f8de..202e104df8a7 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -713,11 +713,14 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved) /* * We want the lowest bit of offset available for in-use/free - * indicator. + * indicator, so force >= 16bit alignment and make size even. */ if (unlikely(align < 2)) align = 2; + if (unlikely(size & 1)) + size++; + if (unlikely(!size || size > PCPU_MIN_UNIT_SIZE || align > PAGE_SIZE)) { WARN(true, "illegal size (%zu) or align (%zu) for " "percpu allocation\n", size, align); |