To avoid slab to warn about exceeded size, fail early if queue occupies more than KMALLOC_MAX_SIZE.
Reported-by: [email protected] Signed-off-by: Jason Wang <[email protected]> --- include/linux/ptr_ring.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h index 1883d61..4b862da 100644 --- a/include/linux/ptr_ring.h +++ b/include/linux/ptr_ring.h @@ -466,6 +466,8 @@ static inline int ptr_ring_consume_batched_bh(struct ptr_ring *r, static inline void **__ptr_ring_init_queue_alloc(unsigned int size, gfp_t gfp) { + if (size > KMALLOC_MAX_SIZE) + return NULL; return kcalloc(size, sizeof(void *), gfp); } -- 2.7.4
