Re: [Patch net-next] ipv6: fix a potential NULL deref
flat view
From: Eric Dumazet <hidden>
Date: 2012-10-29 07:05:39
On Mon, 2012-10-29 at 14:49 +0800, Cong Wang wrote:
On Mon, 2012-10-29 at 07:10 +0100, Eric Dumazet wrote:quoted
quoted
- dst_release(&rt->dst); + if (rt) + dst_release(&rt->dst); }dst_release() is like kfree(), it accepts a NULL argument.'rt->dst' already dereferences 'rt', no matter dst_release() accepts NULL or not.
&rt->dst doesnt dereference rt, you are quite mistaken. if rt is NULL, &rt->dst is also NULL