Re: [syzbot] Re: [syzbot] [btrfs?] memory leak in btrfs_ref_tree_mod

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Subject: Re: [syzbot] [btrfs?] memory leak in btrfs_ref_tree_mod
Author: bragathemanick0908@xxxxxxxxx

#syz test 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
25aa0bebba72

--- a/fs/btrfs/ref-verify.c
+++ b/fs/btrfs/ref-verify.c
@@ -791,6 +791,7 @@ int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
              dump_ref_action(fs_info, ra);
              kfree(ref);
              kfree(ra);
+            kfree(re);
              goto out_unlock;
          } else if (be->num_refs == 0) {
              btrfs_err(fs_info,
@@ -800,6 +801,7 @@ int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
              dump_ref_action(fs_info, ra);
              kfree(ref);
              kfree(ra);
+            kfree(re);
              goto out_unlock;
          }
@@ -822,6 +824,7 @@ int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
                  dump_ref_action(fs_info, ra);
                  kfree(ref);
                  kfree(ra);
+                kfree(re);
                  goto out_unlock;
              }
              exist->num_refs--;
@@ -838,6 +841,7 @@ int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
              dump_ref_action(fs_info, ra);
              kfree(ref);
              kfree(ra);
+            kfree(re);
              goto out_unlock;
          }
          kfree(ref);
@@ -849,6 +853,7 @@ int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
              dump_ref_action(fs_info, ra);
              kfree(ref);
              kfree(ra);
+            kfree(re);
              goto out_unlock;
          }
      }
@@ -881,6 +886,8 @@ int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
      }
      list_add_tail(&ra->list, &be->actions);
      ret = 0;
+    kfree(ra);
+    kfree(re);
  out_unlock:
      spin_unlock(&fs_info->ref_verify_lock);
  out: