diff --git a/sdb/command.py b/sdb/command.py
index fd69c82..017f98c 100644
--- a/sdb/command.py
+++ b/sdb/command.py
@@ -587,9 +587,9 @@ def _help_message(input_type: drgn.Type = None) -> str:
         if input_type is not None:
             msg += f"no walker found for input of type {input_type}\n"
         msg += "The following types have walkers:\n"
-        msg += f"\t{'WALKER':-20s} {'TYPE':-20s}\n"
+        msg += f"\t{'WALKER':<20s} {'TYPE':<20s}\n"
         for type_, class_ in Walker.allWalkers.items():
-            msg += f"\t{class_.names[0]:-20s} {type_:-20s}\n"
+            msg += f"\t{class_.names[0]:<20s} {type_:<20s}\n"
         return msg
 
     def _call(self, objs: Iterable[drgn.Object]) -> Iterable[drgn.Object]:
diff --git a/sdb/commands/linux/process.py b/sdb/commands/linux/process.py
index 25ac983..80c798f 100644
--- a/sdb/commands/linux/process.py
+++ b/sdb/commands/linux/process.py
@@ -22,6 +22,8 @@
 import drgn
 import sdb
 
+from drgn.helpers.linux.pid import find_pid, find_task
+
 
 class FindPid(sdb.Command):
     """
@@ -56,7 +58,7 @@ def _init_parser(cls, name: str) -> argparse.ArgumentParser:
 
     def _call(self, objs: Iterable[drgn.Object]) -> Iterable[drgn.Object]:
         for pid in self.args.pid:
-            yield drgn.helpers.linux.pid.find_pid(sdb.get_prog(), pid)
+            yield find_pid(sdb.get_prog(), pid)
 
 
 class FindTask(sdb.Command):
@@ -87,4 +89,4 @@ def _init_parser(cls, name: str) -> argparse.ArgumentParser:
 
     def _call(self, objs: Iterable[drgn.Object]) -> Iterable[drgn.Object]:
         for pid in self.args.pid:
-            yield drgn.helpers.linux.pid.find_task(sdb.get_prog(), pid)
+            yield find_task(sdb.get_prog(), pid)
diff --git a/sdb/commands/spl/spl_kmem_caches.py b/sdb/commands/spl/spl_kmem_caches.py
index ff41743..639d3ea 100644
--- a/sdb/commands/spl/spl_kmem_caches.py
+++ b/sdb/commands/spl/spl_kmem_caches.py
@@ -212,7 +212,7 @@ class SplKmemCacheWalker(sdb.Walker):
     EXAMPLES
         Print all the objects in the ddt_cache:
 
-            sdb> spl_kmem_caches | filter obj.skc_name == "ddt_cache" | spl_cache
+            sdb> spl_kmem_caches | filter 'obj.skc_name == "ddt_cache"' | spl_cache
             (void *)0xffffa08937e80040
             (void *)0xffffa08937e86180
             (void *)0xffffa08937e8c2c0
diff --git a/sdb/commands/zfs/btree.py b/sdb/commands/zfs/btree.py
index fd170a7..4b5798d 100644
--- a/sdb/commands/zfs/btree.py
+++ b/sdb/commands/zfs/btree.py
@@ -66,8 +66,17 @@ def _helper(self, node: drgn.Object) -> Iterable[drgn.Object]:
         if not node:
             return
 
+        #
+        # We check both members of the node because of the change introdcued in
+        # https://github.com/delphix/zfs/commit/c0bf952c846100750f526c2a32ebec17694a201b
+        #
+        try:
+            recurse = int(node.bth_first) == -1
+        except AttributeError:
+            recurse = node.bth_core
+
         count = node.bth_count
-        if node.bth_core:
+        if recurse:
             # alterate recursive descent on the children and generating core objects
             core = drgn.cast('struct zfs_btree_core *', node)
             for i in range(count):