netdev - [PATCH wpan 01/17] net: ieee802154: make shift exponent unsigned

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Date:   Sun, 28 Feb 2021 10:18:01 -0500
From:   Alexander Aring <aahringo@...hat.com>
To:     stefan@...enfreihafen.org
Cc:     linux-wpan@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH wpan 01/17] net: ieee802154: make shift exponent unsigned

This patch changes the iftype type variable to unsigned that it can
never be reach a negative value.

Reported-by: syzbot+7bf7b22759195c9a21e9@...kaller.appspotmail.com
Signed-off-by: Alexander Aring <aahringo@...hat.com>
---
 net/ieee802154/nl802154.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index e9e4652cd592..3ee09f6d13b7 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -898,8 +898,8 @@ static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info)
 static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
 {
 	struct cfg802154_registered_device *rdev = info->user_ptr[0];
-	enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC;
 	__le64 extended_addr = cpu_to_le64(0x0000000000000000ULL);
+	u32 type = NL802154_IFTYPE_UNSPEC;
 
 	/* TODO avoid failing a new interface
 	 * creation due to pending removal?
-- 
2.26.2