diff --git a/kernel/events/core.c b/kernel/events/core.c
index f159dbab4530..e7d0b055f96c 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -8665,7 +8665,7 @@ static void perf_event_comm_event(struct perf_comm_event *comm_event)
 	unsigned int size;
 
 	memset(comm, 0, sizeof(comm));
-	strscpy(comm, comm_event->task->comm, sizeof(comm));
+	strscpy(comm, comm_event->task->comm);
 	size = ALIGN(strlen(comm)+1, sizeof(u64));
 
 	comm_event->comm = comm;
@@ -9109,7 +9109,7 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
 	}
 
 cpy_name:
-	strscpy(tmp, name, sizeof(tmp));
+	strscpy(tmp, name);
 	name = tmp;
 got_name:
 	/*
@@ -9533,7 +9533,7 @@ void perf_event_ksymbol(u16 ksym_type, u64 addr, u32 len, bool unregister,
 	    ksym_type == PERF_RECORD_KSYMBOL_TYPE_UNKNOWN)
 		goto err;
 
-	strscpy(name, sym, KSYM_NAME_LEN);
+	strscpy(name, sym);
 	name_len = strlen(name) + 1;
 	while (!IS_ALIGNED(name_len, sizeof(u64)))
 		name[name_len++] = '\0';