diff options
| author | tang.junhui <tang.junhui@zte.com.cn> | 2016-10-21 09:35:32 +0800 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-11-23 22:34:22 -0500 |
| commit | f596302c66a6100f564ce2ca6d2dafcfe5c79983 (patch) | |
| tree | 4e12b079743c4fedb3b2a1d0c467a30578fbe08a | |
| parent | 6e64ac0957e06a81b22f95f3509cc39b07735d3d (diff) | |
dm table: fix missing dm_put_target_type() in dm_table_add_target()
[ Upstream commit dafa724bf582181d9a7d54f5cb4ca0bf8ef29269 ]
dm_get_target_type() was previously called so any error returned from
dm_table_add_target() must first call dm_put_target_type(). Otherwise
the DM target module's reference count will leak and the associated
kernel module will be unable to be removed.
Also, leverage the fact that r is already -EINVAL and remove an extra
newline.
Fixes: 36a0456 ("dm table: add immutable feature")
Fixes: cc6cbe1 ("dm table: add always writeable feature")
Fixes: 3791e2f ("dm table: add singleton feature")
Cc: stable@vger.kernel.org # 3.2+
Signed-off-by: tang.junhui <tang.junhui@zte.com.cn>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
| -rw-r--r-- | drivers/md/dm-table.c | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index b2bd1ebf4562..fc93bd80270f 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -691,37 +691,32 @@ int dm_table_add_target(struct dm_table *t, const char *type, tgt->type = dm_get_target_type(type); if (!tgt->type) { - DMERR("%s: %s: unknown target type", dm_device_name(t->md), - type); + DMERR("%s: %s: unknown target type", dm_device_name(t->md), type); return -EINVAL; } if (dm_target_needs_singleton(tgt->type)) { if (t->num_targets) { - DMERR("%s: target type %s must appear alone in table", - dm_device_name(t->md), type); - return -EINVAL; + tgt->error = "singleton target type must appear alone in table"; + goto bad; } t->singleton = 1; } if (dm_target_always_writeable(tgt->type) && !(t->mode & FMODE_WRITE)) { - DMERR("%s: target type %s may not be included in read-only tables", - dm_device_name(t->md), type); - return -EINVAL; + tgt->error = "target type may not be included in a read-only table"; + goto bad; } if (t->immutable_target_type) { if (t->immutable_target_type != tgt->type) { - DMERR("%s: immutable target type %s cannot be mixed with other target types", - dm_device_name(t->md), t->immutable_target_type->name); - return -EINVAL; + tgt->error = "immutable target type cannot be mixed with other target types"; + goto bad; } } else if (dm_target_is_immutable(tgt->type)) { if (t->num_targets) { - DMERR("%s: immutable target type %s cannot be mixed with other target types", - dm_device_name(t->md), tgt->type->name); - return -EINVAL; + tgt->error = "immutable target type cannot be mixed with other target types"; + goto bad; } t->immutable_target_type = tgt->type; } @@ -736,7 +731,6 @@ int dm_table_add_target(struct dm_table *t, const char *type, */ if (!adjoin(t, tgt)) { tgt->error = "Gap in table"; - r = -EINVAL; goto bad; } |