Re: [PATCH] can: gs_usb: fix size parameter to usb_free_coherent() calls

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On Sat, Nov 26, 2022 at 08:26:56PM +0100, Marc Kleine-Budde wrote:
> On 26.11.2022 08:04:11, Greg Kroah-Hartman wrote:
> > On Fri, Nov 25, 2022 at 09:32:17PM +0100, Marc Kleine-Budde wrote:
> > > Hello Greg,
> > > 
> > > with v5.18-rc1 in commit
> > > 
> > > | c359931d2545 ("can: gs_usb: use union and FLEX_ARRAY for data in struct gs_host_frame")
> > > 
> > > a bug in the gs_usb driver in the usage of usb_free_coherent() was
> > > introduced. With v6.1-rc1
> > > 
> > > | 62f102c0d156 ("can: gs_usb: remove dma allocations")
> > > 
> > > the DMA allocation was removed altogether from the driver, fixing the
> > > bug unintentionally.
> > > 
> > > We can either cherry-pick 62f102c0d156 ("can: gs_usb: remove dma
> > > allocations") on v6.0, v5.19, and v5.18 or apply this patch, which fixes
> > > the usage of usb_free_coherent() only.
> > 
> > We should always take what is in Linus's tree, that's the best
> > solution.
> 
> Ok.
> 
> > Does the change backport cleanly?
> 
> ACK.
> 
> > And 5.19 and 5.18 are long end-of-life, no need to worry about them.
> > Only 6.0 matters right now.
> 
> Please queue 62f102c0d156 ("can: gs_usb: remove dma allocations") for
> v6.0.x and add the fixes tag:
> 
> Fixes: c359931d2545 ("can: gs_usb: use union and FLEX_ARRAY for data in struct gs_host_frame")

Now queued up, thanks.

greg k-h



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