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nvmet: fix memory leak of bio integrity

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[ Upstream commit 190f4c2c863af7cc5bb354b70e0805f06419c038 ]

If nvmet receives commands with metadata there is a continuous memory
leak of kmalloc-128 slab or more precisely bio->bi_integrity.

Since commit bf4c89fc87 ("block: don't call bio_uninit from bio_endio")
each user of bio_init has to use bio_uninit as well. Otherwise the bio
integrity is not getting free. Nvmet uses bio_init for inline bios.

Uninit the inline bio to complete deallocation of integrity in bio.

Fixes: bf4c89fc87 ("block: don't call bio_uninit from bio_endio")
Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Bogdanov
2025-06-25 14:45:33 +03:00
committed by Greg Kroah-Hartman
parent f0fee863a7
commit 431e58d56f
1 changed files with 2 additions and 0 deletions
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2
drivers/nvme/target/nvmet.h
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@@ -714,6 +714,8 @@ static inline void nvmet_req_bio_put(struct nvmet_req *req, struct bio *bio)
{
if (bio != &req->b.inline_bio)
bio_put(bio);
else
bio_uninit(bio);
}
#ifdef CONFIG_NVME_TARGET_AUTH