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RDMA/mad: Fix possible memory leak in ib_mad_post_receive_mads()
author
Fan Guo
<guofan5@huawei.com>
Fri, 12 Jun 2020 06:38:24 +0000
(14:38 +0800)
committer
Sasha Levin
<sashal@kernel.org>
Tue, 30 Jun 2020 19:38:42 +0000
(15:38 -0400)
[ 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
patch
|
blob
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history
diff --git
a/drivers/infiniband/core/mad.c
b/drivers/infiniband/core/mad.c
index
a1f059a
..
f03e105
100644
(file)
--- a/
drivers/infiniband/core/mad.c
+++ b/
drivers/infiniband/core/mad.c
@@
-2885,6
+2885,7
@@
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;
}