diff options
| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2014-10-01 22:58:35 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-12-14 16:23:46 +0000 |
| commit | 6df54425eb8653a399e45024941a4b977f12922d (patch) | |
| tree | 32ca30e87e0898754566cd0fdec26d1b4dcbfaf2 /drivers/md/dm-log-userspace-transfer.c | |
| parent | 801da9d2d994143c6f1eda489918c26cd0a277d1 (diff) | |
dm log userspace: fix memory leak in dm_ulog_tfr_init failure path
commit 56ec16cb1e1ce46354de8511eef962a417c32c92 upstream.
If cn_add_callback() fails in dm_ulog_tfr_init(), it does not
deallocate prealloced memory but calls cn_del_callback().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/md/dm-log-userspace-transfer.c')
| -rw-r--r-- | drivers/md/dm-log-userspace-transfer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-log-userspace-transfer.c b/drivers/md/dm-log-userspace-transfer.c index 1f23e048f077..e5bd3efd88aa 100644 --- a/drivers/md/dm-log-userspace-transfer.c +++ b/drivers/md/dm-log-userspace-transfer.c @@ -272,7 +272,7 @@ int dm_ulog_tfr_init(void) r = cn_add_callback(&ulog_cn_id, "dmlogusr", cn_ulog_callback); if (r) { - cn_del_callback(&ulog_cn_id); + kfree(prealloced_cn_msg); return r; } |