diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq-dma.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/block/blk-mq-dma.c b/block/blk-mq-dma.c index 4afeda45df15..3c87779cdc19 100644 --- a/block/blk-mq-dma.c +++ b/block/blk-mq-dma.c @@ -6,11 +6,6 @@ #include <linux/blk-mq-dma.h> #include "blk.h" -struct phys_vec { - phys_addr_t paddr; - u32 len; -}; - static bool __blk_map_iter_next(struct blk_map_iter *iter) { if (iter->iter.bi_size) @@ -112,8 +107,8 @@ static bool blk_rq_dma_map_iova(struct request *req, struct device *dma_dev, struct phys_vec *vec) { enum dma_data_direction dir = rq_dma_dir(req); - unsigned int mapped = 0; unsigned int attrs = 0; + size_t mapped = 0; int error; iter->addr = state->addr; @@ -296,6 +291,8 @@ int __blk_rq_map_sg(struct request *rq, struct scatterlist *sglist, blk_rq_map_iter_init(rq, &iter); while (blk_map_iter_next(rq, &iter, &vec)) { *last_sg = blk_next_sg(last_sg, sglist); + + WARN_ON_ONCE(overflows_type(vec.len, unsigned int)); sg_set_page(*last_sg, phys_to_page(vec.paddr), vec.len, offset_in_page(vec.paddr)); nsegs++; @@ -416,6 +413,8 @@ int blk_rq_map_integrity_sg(struct request *rq, struct scatterlist *sglist) while (blk_map_iter_next(rq, &iter, &vec)) { sg = blk_next_sg(&sg, sglist); + + WARN_ON_ONCE(overflows_type(vec.len, unsigned int)); sg_set_page(sg, phys_to_page(vec.paddr), vec.len, offset_in_page(vec.paddr)); segments++; |