4.4-stable review patch. If anyone has any objections, please let me know.
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From: Michael Davidson md@google.com
commit a37c45cd82e62a361706b9688a984a3a63957321 upstream.
The Linux Kernel relies on GCC's acceptance of inline assembly as an opaque object which will not have any validation performed on the content. The current behaviour in LLVM is to perform validation of the contents by means of parsing the input if the MC layer can handle it.
Disable clangs integrated assembler and use the GNU assembler instead.
Wording-mostly-from: Saleem Abdulrasool compnerd@compnerd.org Signed-off-by: Michael Davidson md@google.com Signed-off-by: Matthias Kaehlcke mka@chromium.org Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com Signed-off-by: Nathan Chancellor natechancellor@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- Makefile | 2 ++ 1 file changed, 2 insertions(+)
--- a/Makefile +++ b/Makefile @@ -719,6 +719,8 @@ KBUILD_CFLAGS += $(call cc-disable-warni # See modpost pattern 2 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) +KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) +KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) else
# These warnings generated too much noise in a regular build.