| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 081/103] iommu/intel: Fix memleak in intel_irq_remapping_alloc | Date | Fri, 15 Jan 2021 13:28:14 +0100 |
| |
From: Dinghao Liu <dinghao.liu@zju.edu.cn>
commit ff2b46d7cff80d27d82f7f3252711f4ca1666129 upstream.
When irq_domain_get_irq_data() or irqd_cfg() fails at i == 0, data allocated by kzalloc() has not been freed before returning, which leads to memleak.
Fixes: b106ee63abcc ("irq_remapping/vt-d: Enhance Intel IR driver to support hierarchical irqdomains") Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn> Acked-by: Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/r/20210105051837.32118-1-dinghao.liu@zju.edu.cn Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/iommu/intel/irq_remapping.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/iommu/intel/irq_remapping.c +++ b/drivers/iommu/intel/irq_remapping.c @@ -1390,6 +1390,8 @@ static int intel_irq_remapping_alloc(str irq_data = irq_domain_get_irq_data(domain, virq + i); irq_cfg = irqd_cfg(irq_data); if (!irq_data || !irq_cfg) { + if (!i) + kfree(data); ret = -EINVAL; goto out_free_data; }
|