From e373ea21638592dbb8c577ba09db7e734d5f40be Mon Sep 17 00:00:00 2001
From: Vitaliy Filippov <vitalif@yourcmc.ru>
Date: Sat, 20 Jun 2026 02:10:10 +0300
Subject: [PATCH] Fix freeing of dyn_data and temp metadata block buffers on
 read cancel

A regression test would also be fun
---
 src/blockstore/v1/read.cpp | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/src/blockstore/v1/read.cpp b/src/blockstore/v1/read.cpp
index ea33974c..c2b96550 100644
--- a/src/blockstore/v1/read.cpp
+++ b/src/blockstore/v1/read.cpp
@@ -552,20 +552,17 @@ int blockstore_impl_t::dequeue_read(blockstore_op_t *read_op)
 undo_read:
     // need to wait. undo added requests, don't dequeue op
     release_clean(read_op);
-    if (dsk.csum_block_size > dsk.bitmap_granularity)
+    for (auto & vec: rv)
     {
-        for (auto & vec: rv)
+        if ((vec.copy_flags & COPY_BUF_CSUM_FILL) && vec.buf)
         {
-            if ((vec.copy_flags & COPY_BUF_CSUM_FILL) && vec.buf)
-            {
-                free(vec.buf);
-                vec.buf = NULL;
-            }
-            if (vec.dyn_data && --(*vec.dyn_data) == 0) // refcount
-            {
-                free(vec.dyn_data);
-                vec.dyn_data = NULL;
-            }
+            free(vec.buf);
+            vec.buf = NULL;
+        }
+        if (vec.dyn_data && --(*vec.dyn_data) == 0) // refcount
+        {
+            free(vec.dyn_data);
+            vec.dyn_data = NULL;
         }
     }
     rv.clear();