Re: [PATCH rdma-rc] RDMA/rdma_cm: Fix use after free race with process_one_req

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

 



On Thu, Mar 22, 2018 at 09:30:37PM +0000, Parav Pandit wrote:

> flush_workqueue() will force to execute all the work items for all
> pending entries, all must have to completed.  Those pending delayed
> entries are unrelated to this work item/request in progress, and if
> they are large number of entries having 1 sec timeout,
> flush_workqueue() might take long.

OK then

> So one rdma_destroy_id will wait for other requests to be completed,
> which I think we should avoid.

I looked at this for a bit.. I really don't like how this code works.

The idea that rdma_destroy_id() doesn't fence the callback is a bad
design, but doesn't apparently cause any bug I can see.

I also can't understand why the rdma_addr_client nonsense should
exist, it seems to be rolled into the idea that cancel doesn't
actually cancel. :(

So lets just use the one line patch and save the rest for some other
day..

Jason
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Photo]     [Yosemite News]     [Yosemite Photos]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux