redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

iommu/intel: Fix memleak in intel_irq_remapping_alloc 

commit ff2b46d7cf 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: b106ee63ab ("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>
5.4-rM2-2.2.x-imx-squashed
Dinghao Liu 2021-01-05 13:18:37 +08:00 committed by Greg Kroah-Hartman
parent 006319327d
commit 2992e3371a
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/iommu/intel_irq_remapping.c
View File

@ -1400,6 +1400,8 @@ static int intel_irq_remapping_alloc(struct irq_domain *domain,
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;
}