diff --git a/SOURCES/config-6.1.111-x86_64 b/SOURCES/config-6.1.111-x86_64
index b4bf96d..d3e1233 100644
--- a/SOURCES/config-6.1.111-x86_64
+++ b/SOURCES/config-6.1.111-x86_64
@@ -493,7 +493,7 @@ CONFIG_CRASH_DUMP=y
 CONFIG_KEXEC_JUMP=y
 CONFIG_PHYSICAL_START=0x1000000
 CONFIG_RELOCATABLE=y
-CONFIG_RANDOMIZE_BASE=y
+# CONFIG_RANDOMIZE_BASE is not set
 CONFIG_X86_NEED_RELOCS=y
 CONFIG_PHYSICAL_ALIGN=0x200000
 CONFIG_DYNAMIC_MEMORY_LAYOUT=y
@@ -9980,7 +9980,7 @@ CONFIG_HARDLOCKUP_CHECK_TIMESTAMP=y
 CONFIG_HARDLOCKUP_DETECTOR=y
 CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
 CONFIG_DETECT_HUNG_TASK=y
-CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
+CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=140
 # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
 CONFIG_WQ_WATCHDOG=y
 # CONFIG_TEST_LOCKUP is not set
@@ -10042,7 +10042,7 @@ CONFIG_TORTURE_TEST=m
 # CONFIG_RCU_SCALE_TEST is not set
 CONFIG_RCU_TORTURE_TEST=m
 # CONFIG_RCU_REF_SCALE_TEST is not set
-CONFIG_RCU_CPU_STALL_TIMEOUT=60
+CONFIG_RCU_CPU_STALL_TIMEOUT=100
 CONFIG_RCU_EXP_CPU_STALL_TIMEOUT=0
 # CONFIG_RCU_TRACE is not set
 # CONFIG_RCU_EQS_DEBUG is not set
@@ -10175,7 +10175,10 @@ CONFIG_FUNCTION_ERROR_INJECTION=y
 # CONFIG_FAULT_INJECTION is not set
 CONFIG_ARCH_HAS_KCOV=y
 CONFIG_CC_HAS_SANCOV_TRACE_PC=y
-# CONFIG_KCOV is not set
+CONFIG_KCOV=y
+CONFIG_KCOV_INSTRUMENT_ALL=y
+CONFIG_KCOV_ENABLE_COMPARISONS=y
+CONFIG_KCOV_IRQ_AREA_SIZE=0x40000
 CONFIG_RUNTIME_TESTING_MENU=y
 # CONFIG_LKDTM is not set
 CONFIG_CPUMASK_KUNIT_TEST=m
diff --git a/SPECS/kernel-6.1.spec b/SPECS/kernel-6.1.spec
index f757172..dbbe307 100644
--- a/SPECS/kernel-6.1.spec
+++ b/SPECS/kernel-6.1.spec
@@ -39,7 +39,7 @@
 %endif
 
 # Set pkg_release.
-%global pkg_release 4%{?buildid}.%{?lvc}%{?dist}.inferit
+%global pkg_release 4%{?buildid}.%{?lvc}%{?dist}.inferit.fuzzing
 
 # Architectures upon which we can sign the kernel
 # for secure boot authentication.
@@ -1481,6 +1481,10 @@ fi
 %kernel_lt_variant_files %{_use_vdso} %{with_std}
 
 %changelog
+* Tue Nov 19 2024 Arkady L. Shane <tigro@msvsphere-os.ru> - 6.1.111-4.lvc4.inferit.fuzzing
+- Enable fuzzing iptions:
+  https://github.com/google/syzkaller/blob/master/docs/linux/kernel_configs.md
+
 * Wed Oct  9 2024 Arkady L. Shane <tigro@msvsphere-os.ru> - 6.1.111-4.lvc4.inferit
 - Enable CONFIG_GCC_PLUGIN_STACKLEAK