FAILED: patch "[PATCH] kcsan: avoid passing -g for test" failed to apply to 5.10-stable tree

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 <[email protected]>.

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 '<[email protected]>' --in-reply-to '[email protected]' --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 <[email protected]>
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.)

index 8cf70f068d92..a45f3dfc8d14 100644
@@ -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