RDMA/hns: Fix bug that caused srq creation to fail

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Due to the incorrect use of the seg and obj information, the position of
the mtt is calculated incorrectly, and the free space of the page is not
enough to store the entire mtt, resulting in access to the next page. This
patch fixes this problem.

 Unable to handle kernel paging request at virtual address ffff00006e3cd000
 ...
 Call trace:
  hns_roce_write_mtt+0x154/0x2f0 [hns_roce]
  hns_roce_buf_write_mtt+0xa8/0xd8 [hns_roce]
  hns_roce_create_srq+0x74c/0x808 [hns_roce]
  ib_create_srq+0x28/0xc8

Fixes: 0203b14c4f ("RDMA/hns: Unify the calculation for hem index in hip08")
Signed-off-by: chenglang <chenglang@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

...

This commit is contained in:

Lijun Ou 2019-04-07 13:23:38 +08:00 • committed by Jason Gunthorpe

parent ea7a5c706f

commit 4772e03d23

2 changed files with 6 additions and 4 deletions

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6

drivers/infiniband/hw/hns/hns_roce_hem.c

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4

drivers/infiniband/hw/hns/hns_roce_mr.c

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