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block: do not leak memory in bio_copy_user_iov()
commit a3761c3c91
upstream.
When bio_add_pc_page() fails in bio_copy_user_iov() we should free
the page we just allocated otherwise we are leaking it.
Cc: linux-block@vger.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable@vger.kernel.org
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
7af20b60f6
commit
2591bfc682
1 changed files with 4 additions and 1 deletions
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@ -1240,8 +1240,11 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
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}
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}
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if (bio_add_pc_page(q, bio, page, bytes, offset) < bytes)
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if (bio_add_pc_page(q, bio, page, bytes, offset) < bytes) {
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if (!map_data)
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__free_page(page);
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break;
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}
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len -= bytes;
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offset = 0;
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