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charset="utf-8" Use kcalloc() in rcu_torture_writer() to gain built-in overflow protection, making memory allocation safer when calculating allocation size compared to explicit multiplication. Change sizeof(ulo[0]) and sizeof(rgo[0]) to sizeof(*ulo) and sizeof(*rgo), as this is more consistent with coding conventions. Signed-off-by: Qianfeng Rong --- kernel/rcu/rcutorture.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 7a893d51d02b..60cac761efc9 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1571,12 +1571,12 @@ rcu_torture_writer(void *arg) return 0; } if (cur_ops->poll_active > 0) { - ulo =3D kzalloc(cur_ops->poll_active * sizeof(ulo[0]), GFP_KERNEL); + ulo =3D kcalloc(cur_ops->poll_active, sizeof(*ulo), GFP_KERNEL); if (!WARN_ON(!ulo)) ulo_size =3D cur_ops->poll_active; } if (cur_ops->poll_active_full > 0) { - rgo =3D kzalloc(cur_ops->poll_active_full * sizeof(rgo[0]), GFP_KERNEL); + rgo =3D kcalloc(cur_ops->poll_active_full, sizeof(*rgo), GFP_KERNEL); if (!WARN_ON(!rgo)) rgo_size =3D cur_ops->poll_active_full; } --=20 2.34.1