Re: [PATCH v5.10 1/1] io_uring: Use original task for req identity in io_identity_cow()

[Greg KH <greg@kroah.com>]

On Wed, Jul 20, 2022 at 06:48:09AM -0600, Jens Axboe wrote:
> On 7/19/22 5:52 AM, Lee Jones wrote:
> > This issue is conceptually identical to the one fixed in 29f077d07051
> > ("io_uring: always use original task when preparing req identity"), so
> > rather than reinvent the wheel, I'm shamelessly quoting the commit
> > message from that patch - thanks Jens:
> > 
> >  "If the ring is setup with IORING_SETUP_IOPOLL and we have more than
> >   one task doing submissions on a ring, we can up in a situation where
> >   we assign the context from the current task rather than the request
> >   originator.
> > 
> >   Always use req->task rather than assume it's the same as current.
> > 
> >   No upstream patch exists for this issue, as only older kernels with
> >   the non-native workers have this problem."
> 
> Greg, can you pick this one up for 5.10-stable? Thanks!

Now queued up, thanks.

greg k-h