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authorBen Hutchings <ben@decadent.org.uk>2020-05-23 18:50:34 +0300
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2020-05-24 10:15:54 +0300
commitf39293fd37fff74c531b7a52d0459cc77db85e7f (patch)
treeca9ec10db63c1f3685d7ff21d68b4b66e17caed6 /arch/mips/loongson64
parent21e1a03e1dbed20e03d88aa077163cd6ceaa128f (diff)
downloadlinux-f39293fd37fff74c531b7a52d0459cc77db85e7f.tar.xz
MIPS: Fix exception handler memcpy()
The exception handler subroutines are declared as a single char, but when copied to the required addresses the copy length is 0x80. When range checks are enabled for memcpy() this results in a build failure, with error messages such as: In file included from arch/mips/mti-malta/malta-init.c:15: In function 'memcpy', inlined from 'mips_nmi_setup' at arch/mips/mti-malta/malta-init.c:98:2: include/linux/string.h:376:4: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter 376 | __read_overflow2(); | ^~~~~~~~~~~~~~~~~~ Change the declarations to use type char[]. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: YunQiang Su <syq@debian.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/loongson64')
-rw-r--r--arch/mips/loongson64/init.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/loongson64/init.c b/arch/mips/loongson64/init.c
index 2b45ca6ca98d..23eeb85b1abf 100644
--- a/arch/mips/loongson64/init.c
+++ b/arch/mips/loongson64/init.c
@@ -22,10 +22,10 @@ u32 node_id_offset;
static void __init mips_nmi_setup(void)
{
void *base;
- extern char except_vec_nmi;
+ extern char except_vec_nmi[];
base = (void *)(CAC_BASE + 0x380);
- memcpy(base, &except_vec_nmi, 0x80);
+ memcpy(base, except_vec_nmi, 0x80);
flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
}