korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-02 08:34:20 +08:00
Code Issues Packages Projects Releases Wiki Activity

IB/core: type promotion bug in rdma_rw_init_one_mr()

Browse Source 
"nents" is an unsigned int, so if ib_map_mr_sg() returns a negative
error code then it's type promoted to a high unsigned int which is
treated as success.

Fixes: a060b5629a ("IB/core: generic RDMA READ/WRITE API")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Dan Carpenter 2018-07-04 12:32:12 +03:00 committed by Jason Gunthorpe
parent e543a245cb
commit c2d7c8ff89
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/core/rw.c
View File

@ -87,7 +87,7 @@ static int rdma_rw_init_one_mr(struct ib_qp *qp, u8 port_num,
} }
ret = ib_map_mr_sg(reg->mr, sg, nents, &offset, PAGE_SIZE); ret = ib_map_mr_sg(reg->mr, sg, nents, &offset, PAGE_SIZE);
if (ret < nents) { if (ret < 0 || ret < nents) {
ib_mr_pool_put(qp, &qp->rdma_mrs, reg->mr); ib_mr_pool_put(qp, &qp->rdma_mrs, reg->mr);
return -EINVAL; return -EINVAL;
} }