tree bdc75b4c2fc10dd0087fdf05b47739902acf52f2
parent 0e825862f3c04cee40e25f55680333728a4ffa9b
author Alexey Khoroshilov <khoroshilov@ispras.ru> 1412197115 +0200
committer Mike Snitzer <snitzer@redhat.com> 1412553818 -0400

dm log userspace: fix memory leak in dm_ulog_tfr_init failure path

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>
Cc: stable@vger.kernel.org