linux-kernel - [PATCH 5.4 255/389] tpm: eventlog: Fix section mismatch for DEBUG_SECTION

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Date:   Tue, 23 Aug 2022 10:25:33 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, WANG Xuerui <git@...0n.name>,
        Huacai Chen <chenhuacai@...ngson.cn>,
        Jarkko Sakkinen <jarkko@...nel.org>
Subject: [PATCH 5.4 255/389] tpm: eventlog: Fix section mismatch for DEBUG_SECTION_MISMATCH

From: Huacai Chen <chenhuacai@...ngson.cn>

commit bed4593645366ad7362a3aa7bc0d100d8d8236a8 upstream.

If DEBUG_SECTION_MISMATCH enabled, __calc_tpm2_event_size() will not be
inlined, this cause section mismatch like this:

WARNING: modpost: vmlinux.o(.text.unlikely+0xe30c): Section mismatch in reference from the variable L0 to the function .init.text:early_ioremap()
The function L0() references
the function __init early_memremap().
This is often because L0 lacks a __init
annotation or the annotation of early_ioremap is wrong.

Fix it by using __always_inline instead of inline for the called-once
function __calc_tpm2_event_size().

Fixes: 44038bc514a2 ("tpm: Abstract crypto agile event size calculations")
Cc: stable@...r.kernel.org # v5.3
Reported-by: WANG Xuerui <git@...0n.name>
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
Signed-off-by: Jarkko Sakkinen <jarkko@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/linux/tpm_eventlog.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/tpm_eventlog.h
+++ b/include/linux/tpm_eventlog.h
@@ -157,7 +157,7 @@ struct tcg_algorithm_info {
  * Return: size of the event on success, 0 on failure
  */
 
-static inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
+static __always_inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
 					 struct tcg_pcr_event *event_header,
 					 bool do_mapping)
 {