e;
   788		void *buf_region;
   789		unsigned int i;
   790		int ret;
   791	
   792		/* allocate pages for the ring structure */
   793		ring_size = flex_array_size(ring, bufs, bl->nr_entries);
   794		ring = kzalloc(ring_size, GFP_KERNEL_ACCOUNT);
   795		if (!ring)
   796			return -ENOMEM;
   797	
   798		ret = io_create_region_multi_buf(ctx, &bl->region, bl->nr_entries,
   799						 reg->buf_size);
   800		if (ret) {
   801			kfree(ring);
   802			return ret;
   803		}
   804	
   805		/* initialize ring buf entries to point to the buffers */
   806		buf_region = bl->region.ptr;
   807		for (i = 0; i < bl->nr_entries; i++) {
   808			struct io_uring_buf *buf = &ring->bufs[i];
   809	
 > 810			buf->addr = (u64)buf_region;
   811			buf->len = reg->buf_size;
   812			buf->bid = i;
   813	
   814			buf_region += reg->buf_size;
   815		}
   816		ring->tail = bl->nr_entries;
   817	
   818		bl->buf_ring = ring;
   819	
   820		return 0;
   821	}
   822	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki[PATCH v2 03/25] io_uring/kbuf: add support for kernel-managed buffer ringskernel test robot <lkp@intel.com> undefinedJoanne Koong <joannelkoong@gmail.com>, miklos@szeredi.hu, axboe@kernel.dk undefined undefined undefined undefined undefined undefined undefined undefined undefined undefinedƒ