Subject: linux-next: build failure after merge of the modules tree

From: Stephen Rothwell <[email-masked]>
Date: Fri, 2 Feb 2024 12:03:46 +1100

Hi all,

After merging the modules tree, today's linux-next build (x86_64
allmodconfig) failed like this:

Segmentation fault
make[3]: *** [/home/sfr/next/next/scripts/Makefile.modfinal:56: lib/tests/module/test_kallsyms_d.ko] Error 139
make[3]: *** Deleting file 'lib/tests/module/test_kallsyms_d.ko'

Caused by commit

  6336b7d9a520 ("selftests: add new kallsyms selftests")

These new tests spend a long time just linking the modules (especially
test_kallsyms_c.ko and test_kallsyms_d.ko) and then the linker segfaults
before finishing test_kallsyms_d.ko.  Maybe your stress tests need to be a little less stressful :-)

The build machine does not run out of memory (it has 30-40GB free).

$ x86_64-linux-gnu-gcc --version
x86_64-linux-gnu-gcc (Debian 13.2.0-7) 13.2.0
$ x86_64-linux-gnu-ld --version
GNU ld (GNU Binutils for Debian) 2.41

I have applied the following patch for today.

From: Stephen Rothwell <[email-masked]>
Date: Fri, 2 Feb 2024 11:57:59 +1100
Subject: [PATCH] selftests: disable TEST_KALLSYMS_D for now

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 lib/Kconfig.debug | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index dcb1bd7c6d9d..152128d63d8d 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -2853,7 +2853,7 @@ config TEST_KALLSYMS
 	select TEST_KALLSYMS_A
 	select TEST_KALLSYMS_B
 	select TEST_KALLSYMS_C
-	select TEST_KALLSYMS_D
+#	select TEST_KALLSYMS_D
 	help
 	  This allows us to stress test find_symbol() through the kallsyms
 	  used to place symbols on the kernel ELF kallsyms and modules kallsyms
-- 
2.43.0

-- 
Cheers,
Stephen Rothwell