From: Eric Dumazet <eduma...@google.com>
Date: Thu, 31 Jan 2019 08:47:10 -0800
> syzbot was able to catch a bug in rds [1]
>
> The issue here is that the socket might be found in a hash table
> but that its refcount has already be set to 0 by another cpu.
>
> We need to use refcount_inc_not_zero() to be safe here.
...
> Fixes: cc4dfb7f70a3 ("rds: fix two RCU related problems")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Reported-by: syzbot <syzkal...@googlegroups.com>
Applied and queued up for -stable, thanks Eric.
