diff --git a/ChangeLog.md b/ChangeLog.md
index 67e761b4..142600a3 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -24,11 +24,16 @@ Not a release but preparation for changing feature set and API.
 -------------------------------------------------------------------------------
 
 
-## v0.11.9 (Чирчик-1992) scheduled to 2022-08-02
+## v0.11.9 (Чирчик-1992) at 2022-08-02
 
 The stable bugfix release.
 It is planned that this will be the last release of the v0.11 branch.
 
+```
+18 files changed, 318 insertions(+), 178 deletions(-)
+Signed-off-by: Леонид Юрьев (Leonid Yuriev) <leo@yuriev.ru>
+```
+
 Acknowledgements:
 
  - [Alex Sharov](https://github.com/AskAlexSharov) and Erigon team for reporting and testing.
diff --git a/GNUmakefile b/GNUmakefile
index 063a9d46..ae126325 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -812,13 +812,13 @@ else
 define bench-rule
 bench-$(1)_$(2).txt: $(3) $(IOARENA) $(lastword $(MAKEFILE_LIST))
 	@echo '  RUNNING ioarena for $1/$2...'
-	$(QUIET)LD_LIBRARY_PATH="./:$$$${LD_LIBRARY_PATH}" \
+	$(QUIET)(export LD_LIBRARY_PATH="./:$$$${LD_LIBRARY_PATH}"; \
+		ldd $(IOARENA) && \
 		$(IOARENA) -D $(1) -B crud -m $(BENCH_CRUD_MODE) -n $(2) \
-		| tee $$@ | grep throughput && \
-	LD_LIBRARY_PATH="./:$$$${LD_LIBRARY_PATH}" \
-		$(IOARENA) -D $(1) -B get,iterate -m $(BENCH_CRUD_MODE) -r 4 -n $(2) \
-		| tee -a $$@ | grep throughput \
-	|| mv -f $$@ $$@.error
+			| tee $$@ | grep throughput && \
+		$(IOARENA) -D $(1) -B iterate,get,iterate,get,iterate -m $(BENCH_CRUD_MODE) -r 4 -n $(2) \
+			| tee -a $$@ | grep throughput \
+	) || mv -f $$@ $$@.error
 
 endef
 
diff --git a/src/core.c b/src/core.c
index 26d1c823..857eba56 100644
--- a/src/core.c
+++ b/src/core.c
@@ -7447,9 +7447,9 @@ static bool meta_checktxnid(const MDBX_env *env, const volatile MDBX_meta *meta,
     if (unlikely(root_txnid != freedb_mod_txnid)) {
       if (report)
         mdbx_warning(
-            "catch invalid root_page_txnid %" PRIaTXN
+            "catch invalid root_page %" PRIaPGNO " mod_txnid %" PRIaTXN
             " for %sdb.mod_txnid %" PRIaTXN " %s",
-            root_txnid, "free", freedb_mod_txnid,
+            freedb_root_pgno, root_txnid, "free", freedb_mod_txnid,
             "(workaround for incoherent flaw of unified page/buffer cache)");
       ok = false;
     }
@@ -7462,9 +7462,9 @@ static bool meta_checktxnid(const MDBX_env *env, const volatile MDBX_meta *meta,
     if (unlikely(root_txnid != maindb_mod_txnid)) {
       if (report)
         mdbx_warning(
-            "catch invalid root_page_txnid %" PRIaTXN
+            "catch invalid root_page %" PRIaPGNO " mod_txnid %" PRIaTXN
             " for %sdb.mod_txnid %" PRIaTXN " %s",
-            root_txnid, "main", maindb_mod_txnid,
+            maindb_root_pgno, root_txnid, "main", maindb_mod_txnid,
             "(workaround for incoherent flaw of unified page/buffer cache)");
       ok = false;
     }
@@ -7824,13 +7824,17 @@ static __always_inline int check_txn(const MDBX_txn *txn, int bad_bits) {
   if (unlikely(txn->mt_flags & bad_bits))
     return MDBX_BAD_TXN;
 
+  mdbx_tassert(txn, (txn->mt_flags & MDBX_NOTLS) ==
+                        ((txn->mt_flags & MDBX_TXN_RDONLY)
+                             ? txn->mt_env->me_flags & MDBX_NOTLS
+                             : 0));
 #if MDBX_TXN_CHECKOWNER
-  if ((txn->mt_flags & MDBX_NOTLS) == 0 &&
-      unlikely(txn->mt_owner != mdbx_thread_self()))
+  if (unlikely(txn->mt_owner != mdbx_thread_self()) &&
+      (txn->mt_flags & (MDBX_NOTLS | MDBX_TXN_FINISHED)) == 0)
     return txn->mt_owner ? MDBX_THREAD_MISMATCH : MDBX_BAD_TXN;
 #endif /* MDBX_TXN_CHECKOWNER */
 
-  if (unlikely(!txn->mt_env->me_map))
+  if (bad_bits && unlikely(!txn->mt_env->me_map))
     return MDBX_EPERM;
 
   return MDBX_SUCCESS;