[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v2 10/10] xen/arm: smmuv3: Avoid open coded arithmetic in memory allocation
From: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx> Backport Linux commit 98b64741d611. This is the clean backport without any changes kmalloc_array()/kcalloc() should be used to avoid potential overflow when a multiplication is needed to compute the size of the requested memory. So turn a devm_kzalloc()+explicit size computation into an equivalent devm_kcalloc(). Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx> Acked-by: Robin Murphy <robin.murphy@xxxxxxx> Link: https://lore.kernel.org/r/3f7b9b202c6b6f5edc234ab7af5f208fbf8bc944.1644274051.git.christophe.jaillet@xxxxxxxxxx Signed-off-by: Will Deacon <will@xxxxxxxxxx> Origin: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 98b64741d611 Signed-off-by: Rahul Singh <rahul.singh@xxxxxxx> --- Changes in v2: - fix commit msg --- xen/drivers/passthrough/arm/smmu-v3.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/xen/drivers/passthrough/arm/smmu-v3.c b/xen/drivers/passthrough/arm/smmu-v3.c index 6fb74d864e..9e4815f455 100644 --- a/xen/drivers/passthrough/arm/smmu-v3.c +++ b/xen/drivers/passthrough/arm/smmu-v3.c @@ -1641,10 +1641,10 @@ static int arm_smmu_init_l1_strtab(struct arm_smmu_device *smmu) { unsigned int i; struct arm_smmu_strtab_cfg *cfg = &smmu->strtab_cfg; - size_t size = sizeof(*cfg->l1_desc) * cfg->num_l1_ents; void *strtab = smmu->strtab_cfg.strtab; - cfg->l1_desc = _xzalloc(size, sizeof(void *)); + cfg->l1_desc = _xzalloc_array(sizeof(*cfg->l1_desc), sizeof(void *), + cfg->num_l1_ents); if (!cfg->l1_desc) return -ENOMEM; -- 2.25.1
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |