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| author | Liu Bo <bo.li.liu@oracle.com> | 2017-09-22 12:11:18 -0600 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-10-30 12:27:57 +0100 |
| commit | 785884fc31883a11e88710d89c525bb7f76e33df (patch) | |
| tree | 1fe2d1d15d5ead3a3544574bf2134dde25bf432b /fs/btrfs/raid56.c | |
| parent | 315d8e98aa4fb67e2765b4c8df10fdf0c0bf0bfb (diff) | |
| download | linux-785884fc31883a11e88710d89c525bb7f76e33df.tar.gz | |
Btrfs: fix memory leak in raid56
The local bio_list may have pending bios when doing cleanup, it can end up with memory leak if they don't get freed. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/raid56.c')
| -rw-r--r-- | fs/btrfs/raid56.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index cba5e7339462..a7f79254ecca 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -1326,6 +1326,9 @@ write_data: cleanup: rbio_orig_end_io(rbio, BLK_STS_IOERR); + + while ((bio = bio_list_pop(&bio_list))) + bio_put(bio); } /* @@ -1582,6 +1585,10 @@ static int raid56_rmw_stripe(struct btrfs_raid_bio *rbio) cleanup: rbio_orig_end_io(rbio, BLK_STS_IOERR); + + while ((bio = bio_list_pop(&bio_list))) + bio_put(bio); + return -EIO; finish: @@ -2107,6 +2114,10 @@ cleanup: if (rbio->operation == BTRFS_RBIO_READ_REBUILD || rbio->operation == BTRFS_RBIO_REBUILD_MISSING) rbio_orig_end_io(rbio, BLK_STS_IOERR); + + while ((bio = bio_list_pop(&bio_list))) + bio_put(bio); + return -EIO; } @@ -2460,6 +2471,9 @@ submit_write: cleanup: rbio_orig_end_io(rbio, BLK_STS_IOERR); + + while ((bio = bio_list_pop(&bio_list))) + bio_put(bio); } static inline int is_data_stripe(struct btrfs_raid_bio *rbio, int stripe) @@ -2569,12 +2583,12 @@ static void raid56_parity_scrub_stripe(struct btrfs_raid_bio *rbio) int stripe; struct bio *bio; + bio_list_init(&bio_list); + ret = alloc_rbio_essential_pages(rbio); if (ret) goto cleanup; - bio_list_init(&bio_list); - atomic_set(&rbio->error, 0); /* * build a list of bios to read all the missing parts of this @@ -2642,6 +2656,10 @@ static void raid56_parity_scrub_stripe(struct btrfs_raid_bio *rbio) cleanup: rbio_orig_end_io(rbio, BLK_STS_IOERR); + + while ((bio = bio_list_pop(&bio_list))) + bio_put(bio); + return; finish: |