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-rw-r--r--drivers/block/rbd.c21
-rw-r--r--net/ceph/messenger.c1
2 files changed, 16 insertions, 6 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index dca6c1e5f6bc..94629e826369 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3862,10 +3862,9 @@ static struct ceph_locker *get_lock_owner_info(struct rbd_device *rbd_dev)
u32 num_lockers;
u8 lock_type;
char *lock_tag;
+ u64 handle;
int ret;
- dout("%s rbd_dev %p\n", __func__, rbd_dev);
-
ret = ceph_cls_lock_info(osdc, &rbd_dev->header_oid,
&rbd_dev->header_oloc, RBD_LOCK_NAME,
&lock_type, &lock_tag, &lockers, &num_lockers);
@@ -3886,18 +3885,28 @@ static struct ceph_locker *get_lock_owner_info(struct rbd_device *rbd_dev)
goto err_busy;
}
- if (lock_type == CEPH_CLS_LOCK_SHARED) {
- rbd_warn(rbd_dev, "shared lock type detected");
+ if (lock_type != CEPH_CLS_LOCK_EXCLUSIVE) {
+ rbd_warn(rbd_dev, "incompatible lock type detected");
goto err_busy;
}
WARN_ON(num_lockers != 1);
- if (strncmp(lockers[0].id.cookie, RBD_LOCK_COOKIE_PREFIX,
- strlen(RBD_LOCK_COOKIE_PREFIX))) {
+ ret = sscanf(lockers[0].id.cookie, RBD_LOCK_COOKIE_PREFIX " %llu",
+ &handle);
+ if (ret != 1) {
rbd_warn(rbd_dev, "locked by external mechanism, cookie %s",
lockers[0].id.cookie);
goto err_busy;
}
+ if (ceph_addr_is_blank(&lockers[0].info.addr)) {
+ rbd_warn(rbd_dev, "locker has a blank address");
+ goto err_busy;
+ }
+
+ dout("%s rbd_dev %p got locker %s%llu@%pISpc/%u handle %llu\n",
+ __func__, rbd_dev, ENTITY_NAME(lockers[0].id.name),
+ &lockers[0].info.addr.in_addr,
+ le32_to_cpu(lockers[0].info.addr.nonce), handle);
out:
kfree(lock_tag);
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index cd7b0bf5369e..5eb4898cccd4 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -1123,6 +1123,7 @@ bool ceph_addr_is_blank(const struct ceph_entity_addr *addr)
return true;
}
}
+EXPORT_SYMBOL(ceph_addr_is_blank);
int ceph_addr_port(const struct ceph_entity_addr *addr)
{