Le 19/06/2022 à 08:45, Christophe Leroy a écrit :
Le 19/06/2022 à 05:52, Guenter Roeck a écrit :If CONFIG_KASAN=y, powerpc:allmodconfig fails to build with the following error. Error: External symbol 'memset' referenced from prom_init.c The problem was introduced with commit 41b7a347bf14 ("powerpc: Book3S 64-bit outline-only KASAN support"). So far, with CONFIG_KASAN=y, only __memset was accepted as valid external symbol in prom_init_check.sh. Add memset as well to fix the problem.No way. It is way too early to use the instrumented version of memset().
See commit 26deb04342e3 ("powerpc: prepare string/mem functions for KASAN") for more details
Did you try with the patch I sent ? https://patchwork.ozlabs.org/project/linuxppc-dev/patch/3802811f7cf94f730be44688539c01bba3a3b5c0.1654875808.git.christophe.le...@csgroup.eu/ Thanks ChristopheFixes: 41b7a347bf14 ("powerpc: Book3S 64-bit outline-only KASAN support") Cc: Michael Ellerman <m...@ellerman.id.au> Cc: Daniel Axtens <d...@axtens.net> Signed-off-by: Guenter Roeck <li...@roeck-us.net> --- arch/powerpc/kernel/prom_init_check.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/prom_init_check.sh b/arch/powerpc/kernel/prom_init_check.sh index b183ab9c5107..787142b5dd26 100644 --- a/arch/powerpc/kernel/prom_init_check.sh +++ b/arch/powerpc/kernel/prom_init_check.sh @@ -16,7 +16,7 @@ grep "^CONFIG_KASAN=y$" .config >/dev/null if [ $? -eq 0 ] then - MEM_FUNCS="__memcpy __memset" + MEM_FUNCS="__memcpy __memset memset" else MEM_FUNCS="memcpy memset" fi
