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| author | Shaun Tancheff <shaun@tancheff.com> | 2016-06-07 11:32:13 -0500 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-06-07 10:47:48 -0600 |
| commit | 05bd92dddc595d74ea645e793c1f3bd4b1fc251a (patch) | |
| tree | 4495eb3d9de4c5d24fa38fb972c2038079d797f5 | |
| parent | 87c279e613f848c691111b29d49de8df3f4f56da (diff) | |
| download | linux-05bd92dddc595d74ea645e793c1f3bd4b1fc251a.tar.gz linux-05bd92dddc595d74ea645e793c1f3bd4b1fc251a.tar.bz2 linux-05bd92dddc595d74ea645e793c1f3bd4b1fc251a.zip | |
block: missing bio_put following submit_bio_wait
submit_bio_wait() gives the caller an opportunity to examine
struct bio and so expects the caller to issue the put_bio()
This fixes a memory leak reported by a few people in 4.7-rc2
kmemleak report after 9082e87bfbf8 ("block: remove struct bio_batch")
Signed-off-by: Shaun Tancheff <shaun.tancheff@seagate.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Larry Finger@lwfinger.net
Tested-by: David Drysdale <drysdale@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | block/blk-lib.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/block/blk-lib.c b/block/blk-lib.c index 23d7f301a196..9e29dc351695 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -113,6 +113,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector, ret = submit_bio_wait(type, bio); if (ret == -EOPNOTSUPP) ret = 0; + bio_put(bio); } blk_finish_plug(&plug); @@ -165,8 +166,10 @@ int blkdev_issue_write_same(struct block_device *bdev, sector_t sector, } } - if (bio) + if (bio) { ret = submit_bio_wait(REQ_WRITE | REQ_WRITE_SAME, bio); + bio_put(bio); + } return ret != -EOPNOTSUPP ? ret : 0; } EXPORT_SYMBOL(blkdev_issue_write_same); @@ -206,8 +209,11 @@ static int __blkdev_issue_zeroout(struct block_device *bdev, sector_t sector, } } - if (bio) - return submit_bio_wait(WRITE, bio); + if (bio) { + ret = submit_bio_wait(WRITE, bio); + bio_put(bio); + return ret; + } return 0; } |