Hello Lorenzo, just a gently ping on this patch. Francesco On Mon, Jan 31, 2022 at 08:52:35AM +0100, Francesco Dolcini wrote: > From: Jason Liu <jason.hui.liu@xxxxxxx> > > The driver install one hook to handle the external abort, but issue > is that if the abort introduced from user space code, the following > code unsigned long instr = *(unsigned long *)pc; which will created > another data-abort(page domain fault) if CONFIG_CPU_SW_DOMAIN_PAN. > > The patch does not intent to use copy_from_user and then do the hack > due to the security consideration. In fact, we can just return and > report the external abort to user-space. > > Link: https://lore.kernel.org/all/20220128082920.591115-1-francesco.dolcini@xxxxxxxxxxx > Signed-off-by: Jason Liu <jason.hui.liu@xxxxxxx> > Reviewed-by: Richard Zhu <hongxing.zhu@xxxxxxx> > Signed-off-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> > Acked-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
