Re: [PATCH net] net: diag: Don't double-free TCP_NEW_SYN_RECV sockets in tcp_abort

[Eric Dumazet]

On 07/07/2018 06:11 AM, David Miller wrote:
> From: Lorenzo Colitti <lore...@google.com>
> Date: Sat,  7 Jul 2018 16:31:40 +0900
> 
>> Tested: passes Android sock_diag_test.py, which exercises this codepath
> 
> If this Android test case exercises this path, why didn't it trigger
> the double free and thus cause this bug to be found much sooner?
> 
> Just curious.
> 

Presumably android has not backported yet the refcount_t stuff in their kernels.

That is a guess though...