diff --git a/dbms/programs/server/Server.cpp b/dbms/programs/server/Server.cpp
index 5f5e464eb01..f10dc07ab56 100644
--- a/dbms/programs/server/Server.cpp
+++ b/dbms/programs/server/Server.cpp
@@ -520,7 +520,18 @@ int Server::main(const std::vector<std::string> & /*args*/)
 
     /// Init trace collector only after trace_log system table was created
     /// Disable it if we collect test coverage information, because it will work extremely slow.
-#if USE_UNWIND && !WITH_COVERAGE
+    ///
+    /// It also cannot work with sanitizers.
+    /// Sanitizers are using quick "frame walking" stack unwinding (this implies -fno-omit-frame-pointer)
+    /// And they do unwiding frequently (on every malloc/free, thread/mutex operations, etc).
+    /// They change %rbp during unwinding and it confuses libunwind if signal comes during sanitizer unwiding
+    ///  and query profiler decide to unwind stack with libunwind at this moment.
+    ///
+    /// Symptoms: you'll get silent Segmentation Fault - without sanitizer message and without usual ClickHouse diagnostics.
+    ///
+    /// Look at compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.h
+    ///
+#if USE_UNWIND && !WITH_COVERAGE && !defined(SANITIZER)
     /// QueryProfiler cannot work reliably with any other libunwind or without PHDR cache.
     if (hasPHDRCache())
         global_context->initializeTraceCollector();
diff --git a/dbms/src/Core/Defines.h b/dbms/src/Core/Defines.h
index a172cf6e243..33c65081e40 100644
--- a/dbms/src/Core/Defines.h
+++ b/dbms/src/Core/Defines.h
@@ -124,6 +124,8 @@
 #endif
 #endif
 
+/// TODO Strange enough, there is no way to detect UB sanitizer.
+
 /// Explicitly allow undefined behaviour for certain functions. Use it as a function attribute.
 /// It is useful in case when compiler cannot see (and exploit) it, but UBSan can.
 /// Example: multiplication of signed integers with possibility of overflow when both sides are from user input.
diff --git a/dbms/tests/integration/test_storage_kafka/test.py b/dbms/tests/integration/test_storage_kafka/test.py
index 7d17c1cf362..24c5a3ac3bf 100644
--- a/dbms/tests/integration/test_storage_kafka/test.py
+++ b/dbms/tests/integration/test_storage_kafka/test.py
@@ -605,7 +605,7 @@ def test_kafka_produce_consume(kafka_cluster):
     assert int(result) == messages_num * threads_num, 'ClickHouse lost some messages: {}'.format(result)
 
 
-@pytest.mark.timeout(180)
+@pytest.mark.timeout(300)
 def test_kafka_commit_on_block_write(kafka_cluster):
     instance.query('''
         DROP TABLE IF EXISTS test.view;
diff --git a/dbms/tests/queries/0_stateless/00933_test_fix_extra_seek_on_compressed_cache.sh b/dbms/tests/queries/0_stateless/00933_test_fix_extra_seek_on_compressed_cache.sh
index b0fd9a70bd4..1f7571a2404 100755
--- a/dbms/tests/queries/0_stateless/00933_test_fix_extra_seek_on_compressed_cache.sh
+++ b/dbms/tests/queries/0_stateless/00933_test_fix_extra_seek_on_compressed_cache.sh
@@ -19,7 +19,7 @@ $CLICKHOUSE_CLIENT --use_uncompressed_cache=1 --query_id="test-query-uncompresse
 sleep 1
 $CLICKHOUSE_CLIENT --query="SYSTEM FLUSH LOGS"
 
-$CLICKHOUSE_CLIENT --query="SELECT ProfileEvents.Values[indexOf(ProfileEvents.Names, 'Seek')], ProfileEvents.Values[indexOf(ProfileEvents.Names, 'ReadCompressedBytes')], ProfileEvents.Values[indexOf(ProfileEvents.Names, 'UncompressedCacheHits')] AS hit FROM system.query_log WHERE (query_id = 'test-query-uncompressed-cache') AND (type = 2) ORDER BY event_time DESC LIMIT 1"
+$CLICKHOUSE_CLIENT --query="SELECT ProfileEvents.Values[indexOf(ProfileEvents.Names, 'Seek')], ProfileEvents.Values[indexOf(ProfileEvents.Names, 'ReadCompressedBytes')], ProfileEvents.Values[indexOf(ProfileEvents.Names, 'UncompressedCacheHits')] AS hit FROM system.query_log WHERE (query_id = 'test-query-uncompressed-cache') AND (type = 2) AND event_date >= yesterday() ORDER BY event_time DESC LIMIT 1"
 
 $CLICKHOUSE_CLIENT --query="DROP TABLE IF EXISTS small_table"
 
diff --git a/dbms/tests/queries/0_stateless/00974_text_log_table_not_empty.sh b/dbms/tests/queries/0_stateless/00974_text_log_table_not_empty.sh
index 149f0668bd1..c3cde4c08bb 100755
--- a/dbms/tests/queries/0_stateless/00974_text_log_table_not_empty.sh
+++ b/dbms/tests/queries/0_stateless/00974_text_log_table_not_empty.sh
@@ -10,7 +10,7 @@ do
 
 ${CLICKHOUSE_CLIENT} --query="SYSTEM FLUSH LOGS"
 sleep 0.1;
-if [[ $($CLICKHOUSE_CURL -sS "$CLICKHOUSE_URL" -d "SELECT count() > 0 FROM system.text_log WHERE position(system.text_log.message, 'SELECT 6103') > 0") == 1 ]]; then echo 1; exit; fi;
+if [[ $($CLICKHOUSE_CURL -sS "$CLICKHOUSE_URL" -d "SELECT count() > 0 FROM system.text_log WHERE position(system.text_log.message, 'SELECT 6103') > 0 AND event_date >= yesterday()") == 1 ]]; then echo 1; exit; fi;
 
 done;