From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Chengguang Xu <cgxu519@mykernel.net>,
Christoph Hellwig <hch@lst.de>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Jens Axboe <axboe@kernel.dk>, Sasha Levin <sashal@kernel.org>,
linux-block@vger.kernel.org
Subject: [PATCH AUTOSEL 5.7 46/53] block: release bip in a right way in error path
Date: Wed, 1 Jul 2020 21:21:55 -0400 [thread overview]
Message-ID: <20200702012202.2700645-46-sashal@kernel.org> (raw)
In-Reply-To: <20200702012202.2700645-1-sashal@kernel.org>
From: Chengguang Xu <cgxu519@mykernel.net>
[ Upstream commit 0b8eb629a700c0ef15a437758db8255f8444e76c ]
Release bip using kfree() in error path when that was allocated
by kmalloc().
Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
block/bio-integrity.c | 23 ++++++++++++++---------
1 file changed, 14 insertions(+), 9 deletions(-)
diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index bf62c25cde8f4..1d173feb38831 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -24,6 +24,18 @@ void blk_flush_integrity(void)
flush_workqueue(kintegrityd_wq);
}
+void __bio_integrity_free(struct bio_set *bs, struct bio_integrity_payload *bip)
+{
+ if (bs && mempool_initialized(&bs->bio_integrity_pool)) {
+ if (bip->bip_vec)
+ bvec_free(&bs->bvec_integrity_pool, bip->bip_vec,
+ bip->bip_slab);
+ mempool_free(bip, &bs->bio_integrity_pool);
+ } else {
+ kfree(bip);
+ }
+}
+
/**
* bio_integrity_alloc - Allocate integrity payload and attach it to bio
* @bio: bio to attach integrity metadata to
@@ -75,7 +87,7 @@ struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio,
return bip;
err:
- mempool_free(bip, &bs->bio_integrity_pool);
+ __bio_integrity_free(bs, bip);
return ERR_PTR(-ENOMEM);
}
EXPORT_SYMBOL(bio_integrity_alloc);
@@ -96,14 +108,7 @@ void bio_integrity_free(struct bio *bio)
kfree(page_address(bip->bip_vec->bv_page) +
bip->bip_vec->bv_offset);
- if (bs && mempool_initialized(&bs->bio_integrity_pool)) {
- bvec_free(&bs->bvec_integrity_pool, bip->bip_vec, bip->bip_slab);
-
- mempool_free(bip, &bs->bio_integrity_pool);
- } else {
- kfree(bip);
- }
-
+ __bio_integrity_free(bs, bip);
bio->bi_integrity = NULL;
bio->bi_opf &= ~REQ_INTEGRITY;
}
--
2.25.1
parent reply other threads:[~2020-07-02 1:24 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20200702012202.2700645-1-sashal@kernel.org>]
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