kernel: add missing KASAN config symbols

Enabling KERNEL_KASAN exposes several missing symbols. As KASAN_SW_TAGS
is only implemented for arm64 CPUs and requires clang, it doesn't make
sense to make this a build option so just default to KASAN_GENERIC and
disable KASAN_SW_TAGS.

While at it, disable TEST_KASAN_MODULE in the generic 5.10 config.

Fixes build failures with KERNEL_KASAN enabled.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index dc249a6031f52a378a344eaa2aa845ca7697894c..2243e3e5bc70d6d12bcc31267c834571e3dbb644 100644 (file)
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -147,6 +147,13 @@ config KERNEL_KASAN_EXTRA
          compile time.
          https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 has more
 
+if KERNEL_KASAN
+       config KERNEL_KASAN_GENERIC
+       def_bool y
+
+       config KERNEL_KASAN_SW_TAGS
+       def_bool n
+endif
 
 choice
        prompt "Instrumentation type"

diff --git a/target/linux/generic/config-5.10 b/target/linux/generic/config-5.10
index 7b952e8ca8956d6981ed1a679ac372f6b4cd0b6c..403712d0e9f55e49c3e87cf14fbf5bc151c1be45 100644 (file)
--- a/target/linux/generic/config-5.10
+++ b/target/linux/generic/config-5.10
@@ -6064,6 +6064,7 @@ CONFIG_TCP_CONG_CUBIC=y
 # CONFIG_TEST_HASH is not set
 # CONFIG_TEST_HEXDUMP is not set
 # CONFIG_TEST_IDA is not set
+# CONFIG_TEST_KASAN_MODULE is not set
 # CONFIG_TEST_KMOD is not set
 # CONFIG_TEST_KSTRTOX is not set
 # CONFIG_TEST_LIST_SORT is not set