From: yu kuai <yuku...@huawei.com>

commit a75ca9303175d36af93c0937dd9b1a6422908b8d upstream.

commit e7bf90e5afe3 ("block/bio-integrity: fix a memory leak bug") added
a kfree() for 'buf' if bio_integrity_add_page() returns '0'. However,
the object will be freed in bio_integrity_free() since 'bio->bi_opf' and
'bio->bi_integrity' were set previousy in bio_integrity_alloc().

Fixes: commit e7bf90e5afe3 ("block/bio-integrity: fix a memory leak bug")
Signed-off-by: yu kuai <yuku...@huawei.com>
Reviewed-by: Ming Lei <ming....@redhat.com>
Reviewed-by: Bob Liu <bob....@oracle.com>
Acked-by: Martin K. Petersen <martin.peter...@oracle.com>
Signed-off-by: Jens Axboe <ax...@kernel.dk>
Cc: Guenter Roeck <li...@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 block/bio-integrity.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index 7f80106624375..d3df44c3b43af 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -315,7 +315,6 @@ bool bio_integrity_prep(struct bio *bio)
 
                if (ret == 0) {
                        printk(KERN_ERR "could not attach integrity payload\n");
-                       kfree(buf);
                        status = BLK_STS_RESOURCE;
                        goto err_end_io;
                }
-- 
2.25.1

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