priv is being explicitly dereferenced when it is still null, when
jumping to goto label err_free_netdev, before it is properly
updated with a valid memory address.
Also, when this happens, memory allocated for netdev at line 854:
netdev = alloc_etherdev(sizeof(*priv)) is not being free'd before
return, hence there is a memory leak.
The current code looks a bit too complicated and can be replaced
by just directly freeing netdev before return.
Notice that card->priv = NULL isn't required because the next thing
we do to card is kfree(card).
Addresses-Coverity-ID: 1467844 ("Explicit null dereferenced")
Suggested-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
Changes in v3:
- Update subject and improve changelog.
- Add Suggested-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Changes in v2:
- Update subject and commit changelog.
- Just directly free netdev. Thanks to Dan Carpenter for the feedback.
drivers/staging/ks7010/ks7010_sdio.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/staging/ks7010/ks7010_sdio.c b/drivers/staging/ks7010/ks7010_sdio.c
index b8f55a1..2c9b92c 100644
--- a/drivers/staging/ks7010/ks7010_sdio.c
+++ b/drivers/staging/ks7010/ks7010_sdio.c
@@ -932,8 +932,7 @@ static int ks7010_sdio_probe(struct sdio_func *func,
return 0;
err_free_netdev:
- free_netdev(priv->net_dev);
- card->priv = NULL;
+ free_netdev(netdev);
err_release_irq:
sdio_claim_host(func);
sdio_release_irq(func);
--
2.7.4
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