From: "tang.junhui" <tang.junhui@xxxxxxxxxx>
tgt->type should be putted in dm_table_add_target()
when the target do not statisfy the needs of target type,
otherwise it would cause the module reference count
of this target type leakage.
Signed-off-by: tang.junhui <tang.junhui@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/md/dm-table.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 6554d91..4f56c38 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -698,30 +698,30 @@ int dm_table_add_target(struct dm_table *t, const char *type,
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 = "target type must appear alone in table";
+ r = -EINVAL;
+ 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 read-only tables";
+ r = -EINVAL;
+ 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";
+ r = -EINVAL;
+ 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";
+ r = -EINVAL;
+ goto bad;
}
t->immutable_target_type = tgt->type;
}
--
2.8.1.windows.1
--
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