Bug#923988: /boot/vmlinuz-4.19.0-2-arm64: dmidecode causes kernel panic (puma-rk3399)
On 3/12/19 9:57 PM, Ben Hutchings wrote:
> On Tue, 2019-03-12 at 19:04 +0100, Christoph Müllner wrote:
>> I've been able to reproduce and analyse this issue.
>>
>> The security error seems to be valid.
> [...]
>
> I don't see a security issue here. The kernel does not and should not
> stop root breaking the system with direct access to /dev/mem, *unless*
> Secure Boot / lockdown is active - and in that case access to /dev/mem
> is blocked completely.
You are right. There is no security error.
SError stands for system error.
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