Re: [PATCH 1/4] nfs: use-after-free in svc_process_common()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 12/21/18 4:00 AM, bfields@xxxxxxxxxxxx wrote:
> On Tue, Dec 18, 2018 at 02:55:15PM +0000, Trond Myklebust wrote:
>> No. We don't care about xpt_flags for the back channel because there is
>> no "server transport". The actual transport is stored in the 'struct
>> rpc_rqst', and is the struct rpc_xprt corresponding to the client
>> socket or RDMA channel.
>>
>> IOW: All we really need in svc_process_common() is to be able to run
>> rqstp->rq_xprt->xpt_ops->xpo_prep_reply_hdr(), and that can be passed
>> either as a pointer to the struct svc_xprt_ops itself.
> 
> For what it's worth, I'd rather get rid of that op--it's an awfully
> roundabout way just to do "svc_putnl(resv, 0);" in the tcp case.

I'll try to save pointer to xpt_ops on per-netns sunrpc_net, 
and use it in svc_process_common() if rqstp->rq_xprt == NULL.



[Index of Archives]     [Linux Filesystem Development]     [Linux USB Development]     [Linux Media Development]     [Video for Linux]     [Linux NILFS]     [Linux Audio Users]     [Yosemite Info]     [Linux SCSI]

  Powered by Linux