diff mbox series

[v3,5/5] target/loongarch/op_helper: Fix coverity cond_at_most error

Message ID 20220715060740.1500628-6-yangxiaojuan@loongson.cn (mailing list archive)
State New, archived
Headers show
Series Fix LoongArch coverity error and cpu name bug | expand

Commit Message

Xiaojuan Yang July 15, 2022, 6:07 a.m. UTC 
The boundary size of cpucfg array should be 0 to ARRAY_SIZE(cpucfg)-1.
So, using index bigger than max boundary to access cpucfg[] must be
forbidden.

Fix coverity CID: 1489760

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/loongarch/op_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/target/loongarch/op_helper.c b/target/loongarch/op_helper.c
index 4b429b6699..568c071601 100644
--- a/target/loongarch/op_helper.c
+++ b/target/loongarch/op_helper.c
@@ -81,7 +81,7 @@  target_ulong helper_crc32c(target_ulong val, target_ulong m, uint64_t sz)
 
 target_ulong helper_cpucfg(CPULoongArchState *env, target_ulong rj)
 {
-    return rj > 21 ? 0 : env->cpucfg[rj];
+    return rj >= ARRAY_SIZE(env->cpucfg) ? 0 : env->cpucfg[rj];
 }
 
 uint64_t helper_rdtime_d(CPULoongArchState *env)