On 2020/6/15 21:37, Bart Van Assche wrote:
On 2020-06-15 02:12, Jing Xiangfeng wrote:
In srpt_cm_req_recv(), it is possible that sdev is NULL,
so we should test sdev before using it.

Signed-off-by: Jing Xiangfeng <[email protected]>
---
  drivers/infiniband/ulp/srpt/ib_srpt.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c 
b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 98552749d71c..72053254bf84 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -2143,7 +2143,7 @@ static int srpt_cm_req_recv(struct srpt_device *const 
sdev,
                            const struct srp_login_req *req,
                            const char *src_addr)
  {
-       struct srpt_port *sport = &sdev->port[port_num - 1];
+       struct srpt_port *sport;
        struct srpt_nexus *nexus;
        struct srp_login_rsp *rsp = NULL;
        struct srp_login_rej *rej = NULL;
@@ -2162,6 +2162,7 @@ static int srpt_cm_req_recv(struct srpt_device *const 
sdev,
        if (WARN_ON(!sdev || !req))
                return -EINVAL;

+       sport = &sdev->port[port_num - 1];
        it_iu_len = be32_to_cpu(req->req_it_iu_len);


Please remove the (!sdev || !req) check instead of making the above
change. It's easy to show that both pointers are always valid.

OK, I will send a v2 with this change.

Thanks

Thanks,

Bart.
.

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