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OpenCloudOS-Kernel
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block: fix memory leak of bvec 

bio_init() clears bio instance, so the bvec index has to be set after
bio_init(), otherwise bio->bi_io_vec may be leaked.

Fixes: 3175199ab0 ("block: split bio_kmalloc from bio_alloc_bioset")
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei 2021-02-02 23:54:10 +08:00 committed by Jens Axboe
parent a42e0d70c5
commit 8358c28a5d
1 changed files with 1 additions and 1 deletions
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block/bio.c
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@ -482,8 +482,8 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, unsigned int nr_iovecs,
if (unlikely(!bvl))
goto err_free;
bio->bi_flags |= idx << BVEC_POOL_OFFSET;
bio_init(bio, bvl, bvec_nr_vecs(idx));
bio->bi_flags |= idx << BVEC_POOL_OFFSET;
} else if (nr_iovecs) {
bio_init(bio, bio->bi_inline_vecs, BIO_INLINE_VECS);
} else {