From: Fan Guo guofan5@huawei.com
[ Upstream commit a17f4bed811c60712d8131883cdba11a105d0161 ]
If ib_dma_mapping_error() returns non-zero value, ib_mad_post_receive_mads() will jump out of loops and return -ENOMEM without freeing mad_priv. Fix this memory-leak problem by freeing mad_priv in this case.
Fixes: 2c34e68f4261 ("IB/mad: Check and handle potential DMA mapping errors") Link: https://lore.kernel.org/r/20200612063824.180611-1-guofan5@huawei.com Signed-off-by: Fan Guo guofan5@huawei.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/core/mad.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 616173b7a5e8a..c26fdcb7dddf8 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -2912,6 +2912,7 @@ static int ib_mad_post_receive_mads(struct ib_mad_qp_info *qp_info, DMA_FROM_DEVICE); if (unlikely(ib_dma_mapping_error(qp_info->port_priv->device, sg_list.addr))) { + kfree(mad_priv); ret = -ENOMEM; break; }