The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 5eb39cde1e2487ba5ec1802dc5e58a77e700d99e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '1680006111249181@kroah.com' --subject-prefix 'PATCH 5.10.y' HEAD^..

Possible dependencies:

5eb39cde1e24 ("kcsan: avoid passing -g for test") 6fcd4267a840 ("kernel: kcsan: kcsan_test: build without structleak plugin") a146fed56f8a ("kcsan: Make test follow KUnit style recommendations")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 5eb39cde1e2487ba5ec1802dc5e58a77e700d99e Mon Sep 17 00:00:00 2001 From: Marco Elver elver@google.com Date: Thu, 16 Mar 2023 23:47:05 +0100 Subject: [PATCH] kcsan: avoid passing -g for test

Nathan reported that when building with GNU as and a version of clang that defaults to DWARF5, the assembler will complain with:

Error: non-constant .uleb128 is not supported

This is because `-g` defaults to the compiler debug info default. If the assembler does not support some of the directives used, the above errors occur. To fix, remove the explicit passing of `-g`.

All the test wants is that stack traces print valid function names, and debug info is not required for that. (I currently cannot recall why I added the explicit `-g`.)

Link: https://lkml.kernel.org/r/20230316224705.709984-2-elver@google.com Fixes: 1fe84fd4a402 ("kcsan: Add test suite") Signed-off-by: Marco Elver elver@google.com Reported-by: Nathan Chancellor nathan@kernel.org Cc: Alexander Potapenko glider@google.com Cc: Dmitry Vyukov dvyukov@google.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org

diff --git a/kernel/kcsan/Makefile b/kernel/kcsan/Makefile index 8cf70f068d92..a45f3dfc8d14 100644 --- a/kernel/kcsan/Makefile +++ b/kernel/kcsan/Makefile @@ -16,6 +16,6 @@ obj-y := core.o debugfs.o report.o KCSAN_INSTRUMENT_BARRIERS_selftest.o := y obj-$(CONFIG_KCSAN_SELFTEST) += selftest.o

-CFLAGS_kcsan_test.o := $(CFLAGS_KCSAN) -g -fno-omit-frame-pointer +CFLAGS_kcsan_test.o := $(CFLAGS_KCSAN) -fno-omit-frame-pointer CFLAGS_kcsan_test.o += $(DISABLE_STRUCTLEAK_PLUGIN) obj-$(CONFIG_KCSAN_KUNIT_TEST) += kcsan_test.o