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Subject[PATCH v3] init: Do not select DEBUG_KERNEL by default
Date
We can't seem to have a kernel with CONFIG_EXPERT set but
CONFIG_DEBUG_KERNEL unset these days.

While some of the features under the CONFIG_EXPERT require
CONFIG_DEBUG_KERNEL, it doesn't apply for all features.

It looks like CONFIG_KALLSYMS_ALL is the only feature that
requires CONFIG_DEBUG_KERNEL.

Select CONFIG_EXPERT when CONFIG_DEBUG_KERNEL is chosen but
you can still choose CONFIG_EXPERT without CONFIG_DEBUG_KERNEL.

Signed-off-by: Sinan Kaya <okaya@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
---
init/Kconfig | 2 --
lib/Kconfig.debug | 1 +
2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/init/Kconfig b/init/Kconfig
index 4592bf7997c0..37e10a8391a3 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1206,8 +1206,6 @@ config BPF

menuconfig EXPERT
bool "Configure standard kernel features (expert users)"
- # Unhide debug options, to make the on-by-default options visible
- select DEBUG_KERNEL
help
This option allows certain base kernel options and settings
to be disabled or tweaked. This is for specialized
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0d9e81779e37..9fbf3499ec8d 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -434,6 +434,7 @@ config MAGIC_SYSRQ_SERIAL

config DEBUG_KERNEL
bool "Kernel debugging"
+ default EXPERT
help
Say Y here if you are developing drivers or trying to debug and
identify kernel problems.
--
2.21.0
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