Make use of the struct_size() helper instead of an open-coded version,
in order to avoid any potential type mistakes or integer overflows that,
in the worst scenario, could lead to heap overflows.
Signed-off-by: Yu Liao <liaoyu15@xxxxxxxxxx>
---
arch/s390/kernel/perf_cpum_cf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c
index 850c11ea631a..e10c7b887f51 100644
--- a/arch/s390/kernel/perf_cpum_cf.c
+++ b/arch/s390/kernel/perf_cpum_cf.c
@@ -1507,7 +1507,7 @@ static size_t cfset_cpuset_read(struct s390_ctrset_setdata *p, int ctrset,
size_t need = 0;
int rc = -1;
- need = sizeof(*p) + sizeof(u64) * ctrset_size;
+ need = struct_size(p, cv, ctrset_size);
if (need <= room) {
p->set = cpumf_ctr_ctl[ctrset];
p->no_cnts = ctrset_size;
--
2.25.1
