On 2/4/19 3:43 AM, Koen Vandeputte wrote: > Hi All, > > I'm seeing following compiler warning during kernel compilation > (5.0-rc5 and 4.14.96): > > > net/core/dev.c: In function 'validate_xmit_skb_list': > net/core/dev.c:3405:15: warning: 'tail' may be used uninitialized in > this function [-Wmaybe-uninitialized] > tail->next = skb; > ~~~~~~~~~~~^~~~~ > > > Source shows this: > > https://elixir.bootlin.com/linux/v5.0-rc5/source/net/core/dev.c#L3387 > > Looks like "tail" can get deferenced while it indeed doesn't get > initialized? Kind regards, Koen >
same with this one - false positive. head is initialized to NULL. tail is set on the first pass through the loop. What compiler / version is this?
