diff options
author | Wenwen Wang <wenwen@cs.uga.edu> | 2019-07-11 22:22:02 +0300 |
---|---|---|
committer | Jens Axboe <axboe@kernel.dk> | 2019-07-12 05:01:21 +0300 |
commit | e7bf90e5afe3aa1d1282c1635a49e17a32c4ecec (patch) | |
tree | 6980b7c332c264d8d29cb7e67e01a1bed0149458 /Makefile | |
parent | 7d30c81b80ea9b0812d27030a46a5bf4c4e328f5 (diff) |
block/bio-integrity: fix a memory leak bug
In bio_integrity_prep(), a kernel buffer is allocated through kmalloc() to
hold integrity metadata. Later on, the buffer will be attached to the bio
structure through bio_integrity_add_page(), which returns the number of
bytes of integrity metadata attached. Due to unexpected situations,
bio_integrity_add_page() may return 0. As a result, bio_integrity_prep()
needs to be terminated with 'false' returned to indicate this error.
However, the allocated kernel buffer is not freed on this execution path,
leading to a memory leak.
To fix this issue, free the allocated buffer before returning from
bio_integrity_prep().
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Makefile')
0 files changed, 0 insertions, 0 deletions