Re: [PATCH 1/5] USB: serial: fix unthrottle races

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On Mon, May 13, 2019 at 01:46:01PM +0200, Johan Hovold wrote:
> On Mon, May 13, 2019 at 12:56:06PM +0200, Greg Kroah-Hartman wrote:
> > On Mon, May 13, 2019 at 12:43:39PM +0200, Johan Hovold wrote:
> > > On Thu, Apr 25, 2019 at 06:05:36PM +0200, Johan Hovold wrote:
> > > > Fix two long-standing bugs which could potentially lead to memory
> > > > corruption or leave the port throttled until it is reopened (on weakly
> > > > ordered systems), respectively, when read-URB completion races with
> > > > unthrottle().
> 
> > > > Fixes: d83b405383c9 ("USB: serial: add support for multiple read urbs")
> > > > Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
> > > 
> > > Greg, I noticed you added a stable tag to the corresponding cdc-acm fix
> > > and think I should have added on one from the start to this one as well.
> > > 
> > > Would you mind queuing this one up for stable?
> > > 
> > > Upstream commit 3f5edd58d040bfa4b74fb89bc02f0bc6b9cd06ab.
> > 
> > Sure, now queued up for 4.9+
> 
> Thanks. The issue has been there since v3.3 so I guess you could queue
> it for all stable trees.

Doesn't apply cleanly for 4.4.y or 3.18.y, so if it's really worth
adding there (and I kind of doubt it), I would need a backport :)

thanks,

greg k-h



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