From: Dmitry Monakhov Add missing 'dm_io_client_destroy' to alloc_context error path. Reorganize mirror constructor error path in order to prevent workqueue leakage. Signed-off-by: Dmitry Monakhov Signed-off-by: Alasdair G Kergon --- drivers/md/dm-raid1.c | 28 +++++++++++++++------------- 1 files changed, 15 insertions(+), 13 deletions(-) Index: linux-2.6.23-rc3/drivers/md/dm-raid1.c =================================================================== --- linux-2.6.23-rc3.orig/drivers/md/dm-raid1.c 2007-08-20 18:00:33.000000000 +0100 +++ linux-2.6.23-rc3/drivers/md/dm-raid1.c 2007-08-20 18:02:30.000000000 +0100 @@ -974,6 +974,7 @@ static struct mirror_set *alloc_context( if (rh_init(&ms->rh, ms, dl, region_size, ms->nr_regions)) { ti->error = "Error creating dirty region hash"; + dm_io_client_destroy(ms->io_client); kfree(ms); return NULL; } @@ -1163,16 +1164,14 @@ static int mirror_ctr(struct dm_target * ms->kmirrord_wq = create_singlethread_workqueue("kmirrord"); if (!ms->kmirrord_wq) { DMERR("couldn't start kmirrord"); - free_context(ms, ti, m); - return -ENOMEM; + r = -ENOMEM; + goto err_free_context; } INIT_WORK(&ms->kmirrord_work, do_mirror); r = parse_features(ms, argc, argv, &args_used); - if (r) { - free_context(ms, ti, ms->nr_mirrors); - return r; - } + if (r) + goto err_destroy_wq; argv += args_used; argc -= args_used; @@ -1188,19 +1187,22 @@ static int mirror_ctr(struct dm_target * if (argc) { ti->error = "Too many mirror arguments"; - free_context(ms, ti, ms->nr_mirrors); - return -EINVAL; + r = -EINVAL; + goto err_destroy_wq; } r = kcopyd_client_create(DM_IO_PAGES, &ms->kcopyd_client); - if (r) { - destroy_workqueue(ms->kmirrord_wq); - free_context(ms, ti, ms->nr_mirrors); - return r; - } + if (r) + goto err_destroy_wq; wake(ms); return 0; + +err_destroy_wq: + destroy_workqueue(ms->kmirrord_wq); +err_free_context: + free_context(ms, ti, ms->nr_mirrors); + return r; } static void mirror_dtr(struct dm_target *ti)