From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F1AA938D01D for ; Sat, 28 Feb 2026 18:08:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302129; cv=none; b=rKwTdHFWstrcf81MdZW1FL5kCgwGODJVbIxuCr84tI72nTXG2tbWeXVvDwFX7pX1e1wfyp27cUHdDbCbOsyeqUOY48I3r80NGEdxdesqBebHnJiHjA7HOeV88Q/G7LbIPOf941xmLSqWO5mKq9jT4JesTG+9jbzC6SnvL27EZSM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302129; c=relaxed/simple; bh=GkzjuzH8H3IohTasl/8HxdKUayanOBPPg8LESQes8Do=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IHXE+yS+B/igAnqNycMrFUJkEda7FGqkSyjRV4Ka6VeohHxqNT1vsVUokJiYbEp0Bh1K6Hid1dYT00EdJNlybPqb3SmjI0F0hnGNuBK4IE0Gvcxe6s696dQ9eC2AGy9/Tev+bjdbU3AQzvyeqf12mFRekFLwqrgEFMjEdW1CX4M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AQ4dem6P; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AQ4dem6P" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53A50C19423; Sat, 28 Feb 2026 18:08:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772302128; bh=GkzjuzH8H3IohTasl/8HxdKUayanOBPPg8LESQes8Do=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AQ4dem6P7Rzyd3BoFB0cnj77DcvKe8SlcPCMttipCoHt+HVg9AIdRpRYfx3Q+C0li iznY9myQZ8Q1RL/d7we5dKk1cgm82ThC32hK+77ZH5vEH9sJiBbe/eh1VXz5fi2CMW ms92RyLiUfrbMdHVIeGr65uEV0Z0rPkY9YM82Mi0pG19fYKzHcU8NsbXCtERwTjU3S RBEc/VsHYRPQOgwxp2NN03jVOud9NBU1yehVDVn3P4BADGqI9K39SsVVcGN9wykFOS 9aDCI1uq8Zez6F/ZvnDBjE/+j4A1lddsvyNjVImFq+7jt/G4SVIyxjHy8bRYRSrC4r 9Zstf4XxOk/5Q== From: Sasha Levin To: patches@lists.linux.dev Cc: Petr Mladek , Daniel Gomez , Petr Pavlu , Aaron Tomlin , Alexei Starovoitov , Daniel Borkman , John Fastabend , Kees Cook , Luis Chamberalin , Marc Rutland , "Masami Hiramatsu (Google)" , Sami Tolvanen , "Steven Rostedt (Google)" , Andrew Morton , Sasha Levin Subject: [PATCH 6.6 120/283] module: add helper function for reading module_buildid() Date: Sat, 28 Feb 2026 13:04:22 -0500 Message-ID: <20260228180709.1583486-120-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228180709.1583486-1-sashal@kernel.org> References: <20260228180709.1583486-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Petr Mladek [ Upstream commit acfdbb4ab2910ff6f03becb569c23ac7b2223913 ] Add a helper function for reading the optional "build_id" member of struct module. It is going to be used also in ftrace_mod_address_lookup(). Use "#ifdef" instead of "#if IS_ENABLED()" to match the declaration of the optional field in struct module. Link: https://lkml.kernel.org/r/20251128135920.217303-4-pmladek@suse.com Signed-off-by: Petr Mladek Reviewed-by: Daniel Gomez Reviewed-by: Petr Pavlu Cc: Aaron Tomlin Cc: Alexei Starovoitov Cc: Daniel Borkman Cc: John Fastabend Cc: Kees Cook Cc: Luis Chamberalin Cc: Marc Rutland Cc: "Masami Hiramatsu (Google)" Cc: Sami Tolvanen Cc: Steven Rostedt (Google) Signed-off-by: Andrew Morton Stable-dep-of: e8a1e7eaa19d ("kallsyms/ftrace: set module buildid in ftrace_mod_address_lookup()") Signed-off-by: Sasha Levin --- include/linux/module.h | 9 +++++++++ kernel/module/kallsyms.c | 9 ++------- 2 files changed, 11 insertions(+), 7 deletions(-) diff --git a/include/linux/module.h b/include/linux/module.h index f58d1eb260fa9..10603f725cae5 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -735,6 +735,15 @@ static inline void __module_get(struct module *module) __mod ? __mod->name : "kernel"; \ }) +static inline const unsigned char *module_buildid(struct module *mod) +{ +#ifdef CONFIG_STACKTRACE_BUILD_ID + return mod->build_id; +#else + return NULL; +#endif +} + /* Dereference module function descriptor */ void *dereference_module_function_descriptor(struct module *mod, void *ptr); diff --git a/kernel/module/kallsyms.c b/kernel/module/kallsyms.c index ef73ae7c89094..8428089791133 100644 --- a/kernel/module/kallsyms.c +++ b/kernel/module/kallsyms.c @@ -336,13 +336,8 @@ const char *module_address_lookup(unsigned long addr, if (mod) { if (modname) *modname = mod->name; - if (modbuildid) { -#if IS_ENABLED(CONFIG_STACKTRACE_BUILD_ID) - *modbuildid = mod->build_id; -#else - *modbuildid = NULL; -#endif - } + if (modbuildid) + *modbuildid = module_buildid(mod); ret = find_kallsyms_symbol(mod, addr, size, offset); } -- 2.51.0