From: Arnd Bergmann <arnd@kernel.org>
To: "Masahiro Yamada" <masahiroy@kernel.org>,
"Rae Moar" <rmoar@google.com>,
"Shuah Khan" <skhan@linuxfoundation.org>,
"Sergio González Collado" <sergio.collado@gmail.com>,
"David Gow" <davidgow@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
Nathan Chancellor <nathan@kernel.org>,
Nicolas Schier <nicolas.schier@linux.dev>,
Mostafa Saleh <smostafa@google.com>,
linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] scripts/mksysmap: skip objtool __pfx_ symbols
Date: Fri, 28 Mar 2025 11:48:19 +0100 [thread overview]
Message-ID: <20250328112156.2614513-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
The recently added testcase for overly long symbols triggers when
CONFIG_FUNCTION_PADDING_CFI is set:
Symbol __pfx_snnnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnnnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7n too long for kallsyms (517 >= 512).
Please increase KSYM_NAME_LEN both in kernel and kallsyms.c
Change the mksymtab table so the prefixed symbols are not included
in kallsyms.
Fixes: c104c16073b7 ("Kunit to check the longest symbol length")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
scripts/mksysmap | 3 +++
1 file changed, 3 insertions(+)
diff --git a/scripts/mksysmap b/scripts/mksysmap
index 3accbdb269ac..33df38ede1e0 100755
--- a/scripts/mksysmap
+++ b/scripts/mksysmap
@@ -59,6 +59,9 @@
# EXPORT_SYMBOL (namespace)
/ __kstrtabns_/d
+# prefixed symbols from objtool
+/ __pfx_/d
+
# ---------------------------------------------------------------------------
# Ignored suffixes
# (do not forget '$' after each pattern)
--
2.39.5
next reply other threads:[~2025-03-28 11:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-28 10:48 Arnd Bergmann [this message]
2025-04-09 1:58 ` [PATCH] scripts/mksysmap: skip objtool __pfx_ symbols Josh Poimboeuf
2025-04-11 6:50 ` Peter Zijlstra
2025-04-11 7:47 ` Arnd Bergmann
2025-04-11 10:58 ` Peter Zijlstra
2025-04-12 14:22 ` Steven Rostedt
2025-04-13 2:22 ` Nathan Chancellor
2025-04-15 17:39 ` David Laight
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