From: Arnd Bergmann <arnd@kernel.org>
To: Kees Cook <keescook@chromium.org>,
Sami Tolvanen <samitolvanen@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>, linux-kernel@vger.kernel.org
Subject: [PATCH] kbuild: lto: add _mcount to list of used symbols
Date: Thu, 25 Feb 2021 15:34:49 +0100 [thread overview]
Message-ID: <20210225143456.3829513-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
Some randconfig builds fail with undefined references to _mcount
when CONFIG_TRIM_UNUSED_KSYMS is set:
ERROR: modpost: "_mcount" [drivers/tee/optee/optee.ko] undefined!
ERROR: modpost: "_mcount" [drivers/fsi/fsi-occ.ko] undefined!
ERROR: modpost: "_mcount" [drivers/fpga/dfl-pci.ko] undefined!
Since there is already a list of symbols that get generated at link
time, add this one as well.
Fixes: fbe078d397b4 ("kbuild: lto: add a default list of used symbols")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
scripts/lto-used-symbollist.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/scripts/lto-used-symbollist.txt b/scripts/lto-used-symbollist.txt
index 38e7bb9ebaae..406ada65e926 100644
--- a/scripts/lto-used-symbollist.txt
+++ b/scripts/lto-used-symbollist.txt
@@ -1,5 +1,6 @@
memcpy
memmove
memset
+_mcount
__stack_chk_fail
__stack_chk_guard
--
2.29.2
next reply other threads:[~2021-02-25 14:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-25 14:34 Arnd Bergmann [this message]
2021-02-25 20:00 ` [PATCH] kbuild: lto: add _mcount to list of used symbols Masahiro Yamada
2021-02-25 20:14 ` Kees Cook
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