[PATCH] ARM: export __memset/__memcpy/__memmove

Arnd Bergmann arnd at kernel.org
Fri Jun 20 04:12:44 PDT 2025


From: Arnd Bergmann <arnd at arndb.de>

When KASAN is locally disabled for one file, the string functions
get redirected to internal helpers, but those are not actually exported,
so this only works in built-in code but fails for loadable modules:

ERROR: modpost: "__memset" [crypto/ecc.ko] undefined!
ERROR: modpost: "__memcpy" [crypto/ecc.ko] undefined!

Add the missig exports.

Fixes: d6d51a96c7d6 ("ARM: 9014/2: Replace string mem* functions for KASan")
Signed-off-by: Arnd Bergmann <arnd at arndb.de>
---
 arch/arm/kernel/armksyms.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 82e96ac83684..1ff50106afa4 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -83,10 +83,13 @@ EXPORT_SYMBOL(__raw_writesl);
 EXPORT_SYMBOL(strchr);
 EXPORT_SYMBOL(strrchr);
 EXPORT_SYMBOL(memset);
+EXPORT_SYMBOL(__memset);
 EXPORT_SYMBOL(__memset32);
 EXPORT_SYMBOL(__memset64);
 EXPORT_SYMBOL(memcpy);
+EXPORT_SYMBOL(__memcpy);
 EXPORT_SYMBOL(memmove);
+EXPORT_SYMBOL(__memmove);
 EXPORT_SYMBOL(memchr);
 
 EXPORT_SYMBOL(mmioset);
-- 
2.39.5




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