Messages in this thread Patch in this message | | | From | Kangjie Lu <> | Subject | [PATCH] net: fujitsu: fix a potential NULL pointer dereference | Date | Mon, 11 Mar 2019 01:15:01 -0500 |
| |
In case ioremap fails, the fix returns -ENOMEM to avoid the NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu> --- drivers/net/ethernet/fujitsu/fmvj18x_cs.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/fujitsu/fmvj18x_cs.c b/drivers/net/ethernet/fujitsu/fmvj18x_cs.c index a69cd19a55ae..5061ddf699a7 100644 --- a/drivers/net/ethernet/fujitsu/fmvj18x_cs.c +++ b/drivers/net/ethernet/fujitsu/fmvj18x_cs.c @@ -547,6 +547,9 @@ static int fmvj18x_get_hwinfo(struct pcmcia_device *link, u_char *node_id) return -1; base = ioremap(link->resource[2]->start, resource_size(link->resource[2])); + if (!base) + return -ENOMEM; + pcmcia_map_mem_page(link, link->resource[2], 0); /* -- 2.17.1
| |