From 87a52307989897d7ee099d20d2500348182c6d75 Mon Sep 17 00:00:00 2001
From: Vitaliy Filippov <vitalif@yourcmc.ru>
Date: Mon, 11 May 2026 13:06:03 +0300
Subject: [PATCH] Add forgotten header_csum check to the new store

---
 src/blockstore/blockstore_init.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/blockstore/blockstore_init.cpp b/src/blockstore/blockstore_init.cpp
index 54ba9074..f2d413ee 100644
--- a/src/blockstore/blockstore_init.cpp
+++ b/src/blockstore/blockstore_init.cpp
@@ -153,6 +153,14 @@ resume_1:
             );
             exit(1);
         }
+        uint32_t csum = hdr->header_csum;
+        hdr->header_csum = 0;
+        if (crc32c(0, hdr, sizeof(*hdr)) != csum)
+        {
+            printf("Metadata header is corrupt (checksum mismatch).\n");
+            exit(1);
+        }
+        hdr->header_csum = csum;
     }
     bs->heap->start_load(((blockstore_meta_header_v3_t *)bs->meta_superblock)->completed_lsn);
     if (bs->dsk.inmemory_journal)