On Fri, Nov 22, 2019 at 10:52:48AM +0000, Lee Jones wrote:
From: Hari Vyas <hari.vyas@xxxxxxxxxxxx> [ Upstream commit e4ba15debcfd27f60d43da940a58108783bff2a6 ] The bad_mode() handler is called if we encounter an uunknown exception, with the expectation that the subsequent call to panic() will halt the system. Unfortunately, if the exception calling bad_mode() is taken from EL0, then the call to die() can end up killing the current user task and calling schedule() instead of falling through to panic(). Remove the die() call altogether, since we really want to bring down the machine in this "impossible" case.
Should this be in newer LTS kernels too? I don't see it in 4.14. We can't take anything into older kernels if it's not in newer ones - we don't want to break users who update their kernels. -- Thanks, Sasha
