Commit cd8c917a56f2 for kernel

commit cd8c917a56f20f48748dd43d9ae3caff51d5b987
Author: Salvatore Bonaccorso <>
Date:   Mon Dec 6 21:42:01 2021 +0100

    Makefile: Do not quote value for CONFIG_CC_IMPLICIT_FALLTHROUGH

    Andreas reported that a specific build environment for an external
    module, being a bit broken, does pass CC_IMPLICIT_FALLTHROUGH quoted as
    argument to gcc, causing an error

      gcc-11: error: "-Wimplicit-fallthrough=5": linker input file not found: No such file or directory

    Until this is more generally fixed as outlined in [1], by fixing
    scripts/, scripts/, etc to not directly
    include the include/config/auto.conf, and in a second step, change
    Kconfig to generate the auto.conf without "", workaround the issue by
    explicitly unquoting CC_IMPLICIT_FALLTHROUGH.

    Reported-by: Andreas Beckmann <>
    Link: [1]
    Signed-off-by: Salvatore Bonaccorso <>
    Reviewed-by: Kees Cook <>
    Reviewed-by: Gustavo A. R. Silva <>
    Signed-off-by: Linus Torvalds <>

diff --git a/Makefile b/Makefile
index 8e35d7804fef..ef967a26bcd3 100644
--- a/Makefile
+++ b/Makefile
@@ -789,7 +789,7 @@ stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG)      := -fstack-protector-strong
 KBUILD_CFLAGS += $(stackp-flags-y)


 KBUILD_CPPFLAGS += -Qunused-arguments