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net/rds: NULL pointer de-reference in rds_ib_add_one() 

The parent field of a struct device may be NULL.  The macro
ibdev_to_node() should check for that.

Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ka-Cheong Poon 2020-06-15 00:40:25 -07:00 committed by David S. Miller
parent b3a9e3b962
commit 33cf601da7
1 changed files with 7 additions and 1 deletions
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8
net/rds/ib.h
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@ -264,7 +264,13 @@ struct rds_ib_device {
int *vector_load;
};
#define ibdev_to_node(ibdev) dev_to_node((ibdev)->dev.parent)
static inline int ibdev_to_node(struct ib_device *ibdev)
{
struct device *parent;
parent = ibdev->dev.parent;
return parent ? dev_to_node(parent) : NUMA_NO_NODE;
}
#define rdsibdev_to_node(rdsibdev) ibdev_to_node(rdsibdev->dev)
/* bits for i_ack_flags */