linux-kernel - [PATCH v2 3/4] vmlinux.lds.h: add missing alignment for symbol CRCs

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Message-ID: <20240129192644.3359978-4-mcgrof@kernel.org>
Date: Mon, 29 Jan 2024 11:26:42 -0800
From: Luis Chamberlain <mcgrof@...nel.org>
To: masahiroy@...nel.org,
	deller@....de
Cc: mcgrof@...nel.org,
	arnd@...db.de,
	linux-arch@...r.kernel.org,
	linux-modules@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/4] vmlinux.lds.h: add missing alignment for symbol CRCs

Commit f3304ecd7f06 (linux/export: use inline assembler to populate
symbol CRCs") fixed an issue with unexpected padding  by adding
asm inline assembly to directly specify the desired data layout.
It however forgot to add the alignment, fix that.

Reported-by: Helge Deller <deller@....de>
Fixes: f3304ecd7f06 ("linux/export: use inline assembler to populate symbol CRCs")
Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 include/linux/export-internal.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/export-internal.h b/include/linux/export-internal.h
index 69501e0ec239..51b8cf3f60ef 100644
--- a/include/linux/export-internal.h
+++ b/include/linux/export-internal.h
@@ -61,6 +61,7 @@
 
 #define SYMBOL_CRC(sym, crc, sec)   \
 	asm(".section \"___kcrctab" sec "+" #sym "\",\"a\""	"\n" \
+	    ".balign 4"						"\n" \
 	    "__crc_" #sym ":"					"\n" \
 	    ".long " #crc					"\n" \
 	    ".previous"						"\n")
-- 
2.42.0