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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2016-01-12 12:29:21 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-01-19 15:17:40 -0500 |
| commit | a7d0e959fab832d0614d0e144cb01cbb87d36258 (patch) | |
| tree | a09da7b5ad6582f5d1effa8b2691b0041cb5c688 /drivers/infiniband | |
| parent | bc1251e6d9420fec4c6b328bcf9ea4e5bdecd30d (diff) | |
| download | op-kernel-dev-a7d0e959fab832d0614d0e144cb01cbb87d36258.zip op-kernel-dev-a7d0e959fab832d0614d0e144cb01cbb87d36258.tar.gz | |
IB/cma: allocating too much memory in make_cma_ports()
The issue here is that there is a cut and paste bug. When we allocate
cma_dev_group->default_ports_group we use "sizeof(*cma_dev_group->ports)"
instead of "sizeof(*cma_dev_group->default_ports_group)".
We're bumping up against the 80 character limit so I introduced a new
local pointer "ports_group" to get around that.
Fixes: 045959db65c6 ('IB/cma: Add configfs for rdma_cm')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/cma_configfs.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/infiniband/core/cma_configfs.c b/drivers/infiniband/core/cma_configfs.c index bd1d640..18b112a 100644 --- a/drivers/infiniband/core/cma_configfs.c +++ b/drivers/infiniband/core/cma_configfs.c @@ -158,6 +158,7 @@ static int make_cma_ports(struct cma_dev_group *cma_dev_group, unsigned int i; unsigned int ports_num; struct cma_dev_port_group *ports; + struct config_group **ports_group; int err; ibdev = cma_get_ib_dev(cma_dev); @@ -168,12 +169,9 @@ static int make_cma_ports(struct cma_dev_group *cma_dev_group, ports_num = ibdev->phys_port_cnt; ports = kcalloc(ports_num, sizeof(*cma_dev_group->ports), GFP_KERNEL); + ports_group = kcalloc(ports_num + 1, sizeof(*ports_group), GFP_KERNEL); - cma_dev_group->default_ports_group = kcalloc(ports_num + 1, - sizeof(*cma_dev_group->ports), - GFP_KERNEL); - - if (!ports || !cma_dev_group->default_ports_group) { + if (!ports || !ports_group) { err = -ENOMEM; goto free; } @@ -187,15 +185,16 @@ static int make_cma_ports(struct cma_dev_group *cma_dev_group, config_group_init_type_name(&ports[i].group, port_str, &cma_port_group_type); - cma_dev_group->default_ports_group[i] = &ports[i].group; + ports_group[i] = &ports[i].group; } - cma_dev_group->default_ports_group[i] = NULL; + ports_group[i] = NULL; + cma_dev_group->default_ports_group = ports_group; cma_dev_group->ports = ports; return 0; free: kfree(ports); - kfree(cma_dev_group->default_ports_group); + kfree(ports_group); cma_dev_group->ports = NULL; cma_dev_group->default_ports_group = NULL; return err; |
