Hi Peter, > On Wed, Jun 03, 2026 at 07:43:28PM +0200, Yunseong Kim wrote: >> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug >> index e2f976c3301b..abd1a94589aa 100644 >> --- a/lib/Kconfig.debug >> +++ b/lib/Kconfig.debug >> @@ -2261,6 +2261,28 @@ config KCOV_SELFTEST >> On test failure, causes the kernel to panic. Recommended to be >> enabled, ensuring critical functionality works as intended. >> >> + > > ^ This line... > >> +config KCOV_DATAFLOW_ARGS >> + bool "Enable KCOV dataflow: function argument capture" >> + depends on KCOV >> + depends on $(cc-option,-fsanitize-coverage=dataflow-args) >> + help >> + Captures function arguments at entry via >> /sys/kernel/debug/kcov_dataflow. >> + Struct pointer arguments are auto-expanded using compiler DebugInfo >> + metadata, recording individual field values at runtime. >> + Enable per-module with: KCOV_DATAFLOW_file.o := y in the Makefile. >> + Requires clang with -fsanitize-coverage=dataflow-args support. >> + >> +config KCOV_DATAFLOW_RET >> + bool "Enable KCOV dataflow: return value capture" >> + depends on KCOV >> + depends on $(cc-option,-fsanitize-coverage=dataflow-ret) >> + help >> + Captures function return values via /sys/kernel/debug/kcov_dataflow. >> + Struct pointer returns are auto-expanded using compiler DebugInfo >> + metadata, recording individual field values at runtime. >> + Enable per-module with: KCOV_DATAFLOW_file.o := y in the Makefile. >> + Requires clang with -fsanitize-coverage=dataflow-ret support. > > Probably wants to be here...
Thank you for code review. I updated at v2 patch. > >> config DEBUG_AID_FOR_SYZBOT >> bool "Additional debug code for syzbot" >> default n >> >> -- >> 2.43.0 >> Best regards, Yunseong
