This is a note to let you know that I've just added the patch titled
block: fix memory leak of bvec
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
block-fix-memory-leak-of-bvec.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8358c28a5d44bf0223a55a2334086c3707bb4185 Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@xxxxxxxxxx>
Date: Tue, 2 Feb 2021 23:54:10 +0800
Subject: block: fix memory leak of bvec
From: Ming Lei <ming.lei@xxxxxxxxxx>
commit 8358c28a5d44bf0223a55a2334086c3707bb4185 upstream.
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: 3175199ab0ac ("block: split bio_kmalloc from bio_alloc_bioset")
Cc: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Cc: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
Cc: Damien Le Moal <damien.lemoal@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
block/bio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/block/bio.c
+++ b/block/bio.c
@@ -491,8 +491,8 @@ struct bio *bio_alloc_bioset(gfp_t gfp_m
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 {
Patches currently in stable-queue which might be from ming.lei@xxxxxxxxxx are
queue-5.10/block-fix-memory-leak-of-bvec.patch
