On 2018年02月08日 11:21, Jason Wang wrote:
This patch switch to use kvmalloc_array() for using a vmalloc() fallback to help in case kmalloc() fails. Reported-by: syzbot+e4d4f9ddd42955397...@syzkaller.appspotmail.com Fixes: 2e0ab8ca83c12 ("ptr_ring: array based FIFO for pointers") Signed-off-by: Jason Wang <jasow...@redhat.com> --- include/linux/ptr_ring.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h index 1883d61..9c3b748 100644 --- a/include/linux/ptr_ring.h +++ b/include/linux/ptr_ring.h @@ -466,7 +466,7 @@ 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){ - return kcalloc(size, sizeof(void *), gfp); + return kvmalloc_array(size, sizeof(void *), gfp | __GFP_ZERO); }static inline void __ptr_ring_set_size(struct ptr_ring *r, int size)
Forget the kvfree() ... Will post V3. Sorry.
