linux-kernel - [PATCH 1/2] kallsyms: add kallsyms_seqs_of

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Message-Id: <20230306101451.375844-1-arnd@kernel.org>
Date:   Mon,  6 Mar 2023 11:14:50 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kees Cook <keescook@...omium.org>,
        Miguel Ojeda <ojeda@...nel.org>,
        Zhen Lei <thunder.leizhen@...wei.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 1/2] kallsyms: add kallsyms_seqs_of_names to list of special symbols

From: Arnd Bergmann <arnd@...db.de>

My randconfig build setup ran into another kallsyms warning:

Inconsistent kallsyms data
Try make KALLSYMS_EXTRA_PASS=1 as a workaround

After adding some debugging code to kallsyms.c, I saw that the recently
added kallsyms_seqs_of_names symbol can sometimes cause the second stage
table to be slightly longer than the first stage, which makes the
build inconsistent.

Add it to the exception table that contains all other kallsyms-generated
symbols.

Fixes: 60443c88f3a8 ("kallsyms: Improve the performance of kallsyms_lookup_name()")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 scripts/kallsyms.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 8a68179a98a3..a239a87e7bec 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -119,6 +119,7 @@ static bool is_ignored_symbol(const char *name, char type)
 		"kallsyms_markers",
 		"kallsyms_token_table",
 		"kallsyms_token_index",
+		"kallsyms_seqs_of_names",
 		/* Exclude linker generated symbols which vary between passes */
 		"_SDA_BASE_",		/* ppc */
 		"_SDA2_BASE_",		/* ppc */
-- 
2.39.2