From: Eric Biggers <ebiggers@google.com>
Date: Mon, 10 Jun 2019 20:02:19 +0000 (-0700)
Subject: cfg80211: fix memory leak of wiphy device name
X-Git-Tag: v4.19.56~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=17d941dc30337840d962dddbddfdcf9dac7c4b22;p=platform%2Fkernel%2Flinux-rpi.git

cfg80211: fix memory leak of wiphy device name

commit 4f488fbca2a86cc7714a128952eead92cac279ab upstream.

In wiphy_new_nm(), if an error occurs after dev_set_name() and
device_initialize() have already been called, it's necessary to call
put_device() (via wiphy_free()) to avoid a memory leak.

Reported-by: syzbot+7fddca22578bc67c3fe4@syzkaller.appspotmail.com
Fixes: 1f87f7d3a3b4 ("cfg80211: add rfkill support")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/wireless/core.c b/net/wireless/core.c
index a88551f..8c92e35 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -498,7 +498,7 @@ use_default_name:
 				   &rdev->rfkill_ops, rdev);
 
 	if (!rdev->rfkill) {
-		kfree(rdev);
+		wiphy_free(&rdev->wiphy);
 		return NULL;
 	}