On Fri, Apr 21, 2017 at 03:06:12PM +0200, Arnd Bergmann wrote:
> gcc warns about a bug in 3.18.y:
>
> drivers/usb/gadget/legacy/inode.c:648:10: warning: 'value' may be used
>
> This is caused by the backport of f01d35a15fa0416 from 4.0 to 3.18:
> c81fc59be42c6e0 gadgetfs: use-after-free in ->aio_read()
>
> The backported patch was buggy, but the mainline code was rewritten
> in a larger patch directly following this one in a way that fixed the
> bug.
>
> For stable, we should need only a one-line change to make sure we
> return an proper error code. It is very unlikely that anybody ever
> ran into the out-of-memory case here in practice, but the compiler
> is right in theory.
>
> Fixes: c81fc59be42c ("gadgetfs: use-after-free in ->aio_read()")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> drivers/usb/gadget/legacy/inode.c | 1 +
> 1 file changed, 1 insertion(+)
Now queued up, thanks!
greg k-h