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rcutorture: Use kcalloc() instead of kzalloc()

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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 <rongqianfeng@vivo.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Qianfeng Rong
2025-08-21 21:41:16 +08:00
committed by Paul E. McKenney
parent 51c285baa3
commit 3e15cccf3e
1 changed files with 2 additions and 2 deletions
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4
kernel/rcu/rcutorture.c
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@@ -1572,12 +1572,12 @@ rcu_torture_writer(void *arg)
return 0;
}
if (cur_ops->poll_active > 0) {
ulo = kzalloc(cur_ops->poll_active * sizeof(ulo[0]), GFP_KERNEL);
ulo = kcalloc(cur_ops->poll_active, sizeof(*ulo), GFP_KERNEL);
if (!WARN_ON(!ulo))
ulo_size = cur_ops->poll_active;
}
if (cur_ops->poll_active_full > 0) {
rgo = kzalloc(cur_ops->poll_active_full * sizeof(rgo[0]), GFP_KERNEL);
rgo = kcalloc(cur_ops->poll_active_full, sizeof(*rgo), GFP_KERNEL);
if (!WARN_ON(!rgo))
rgo_size = cur_ops->poll_active_full;
}