[patch] dm9000: NULL dereferences on error in probe()
From: Dan Carpenter <hidden>
Date: 2014-08-01 08:24:50
Also in:
kernel-janitors
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The dm9000_release_board() function is called with NULL ->data_req and ->addr_req pointers if dm9000_probe() fails. Signed-off-by: Dan Carpenter <redacted> --- Old bug, but not serious.
diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
index 13723c9..23084fb 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c@@ -817,10 +817,12 @@ dm9000_release_board(struct platform_device *pdev, struct board_info *db) /* release the resources */ - release_resource(db->data_req); + if (db->data_req) + release_resource(db->data_req); kfree(db->data_req); - release_resource(db->addr_req); + if (db->addr_req) + release_resource(db->addr_req); kfree(db->addr_req); }