* [PATCH AUTOSEL 4.9 02/13] RDMA/hns: Correct the value of HNS_ROCE_HEM_CHUNK_LEN
[not found] <20191122194958.24926-1-sashal@kernel.org>
@ 2019-11-22 19:49 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2019-11-22 19:49 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Sirong Wang, Weihang Li, Jason Gunthorpe, Sasha Levin, linux-rdma
From: Sirong Wang <wangsirong@huawei.com>
[ Upstream commit 531eb45b3da4267fc2a64233ba256c8ffb02edd2 ]
Size of pointer to buf field of struct hns_roce_hem_chunk should be
considered when calculating HNS_ROCE_HEM_CHUNK_LEN, or sg table size will
be larger than expected when allocating hem.
Fixes: 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver")
Link: https://lore.kernel.org/r/1572575610-52530-2-git-send-email-liweihang@hisilicon.com
Signed-off-by: Sirong Wang <wangsirong@huawei.com>
Signed-off-by: Weihang Li <liweihang@hisilicon.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/hns/hns_roce_hem.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hem.h b/drivers/infiniband/hw/hns/hns_roce_hem.h
index 435748858252d..8e8917ebb013b 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hem.h
+++ b/drivers/infiniband/hw/hns/hns_roce_hem.h
@@ -52,7 +52,7 @@ enum {
#define HNS_ROCE_HEM_CHUNK_LEN \
((256 - sizeof(struct list_head) - 2 * sizeof(int)) / \
- (sizeof(struct scatterlist)))
+ (sizeof(struct scatterlist) + sizeof(void *)))
enum {
HNS_ROCE_HEM_PAGE_SHIFT = 12,
--
2.20.1
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2019-11-22 19:49 ` [PATCH AUTOSEL 4.9 02/13] RDMA/hns: Correct the value of HNS_ROCE_HEM_CHUNK_LEN Sasha Levin
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