Re: Anyone else seen this.

On 03/07/2026 17:43, Theo wrote:
> In uk.d-i-y The Natural Philosopher <[email protected]> wrote:
>> Recently my router (Draytek 2726) has been spontaneously rebooting.
>>
>> Examination of the logs show a kernel panic caused by 'attempt to
>> execute an illegal instruction'.
>>
>> My assumption, possibly erroneous, is that the actual firmware code is
>> corrupted
>> The router is rated only to +45°C but that is the recommended limit for
>> flash memory, and the room temperature has been up towards 40°C. which
>> doesn't leave a great deal of margin for router internal heat production.
>> My query is whether anyone else has seen issues with flash memory in the
>> recent hear wave.
>>
>> Surely phones get hotter than this?
>>
>> Genuinely interested in other's experiences.
> 
> You can get bit flips from cosmic rays.  That's a reason servers have ECC
> memory:
> 
> https://en.wikipedia.org/wiki/Soft_error
> 
> Not sure to what extent flash is affected, but many routers nowadays copy
> their OS into RAM before execution: 'execute in place' is still possible,
> but sometimes they store a compressed image in flash to reduce flash cost
> and decompress into RAM on boot.

Well its rebooted and then done it again a few hours later. That doesn't 
rule out dodgy RAM but it inclines towards Flash,,,
> 
> It could also be a RAM chip on the way out.
> 
Very interesting possibility..

> Theo

-- 
“it should be clear by now to everyone that activist environmentalism 
(or environmental activism) is becoming a general ideology about humans, 
about their freedom, about the relationship between the individual and 
the state, and about the manipulation of people under the guise of a 
'noble' idea. It is not an honest pursuit of 'sustainable development,' 
a matter of elementary environmental protection, or a search for 
rational mechanisms designed to achieve a healthy environment. Yet 
things do occur that make you shake your head and remind yourself that 
you live neither in Joseph Stalin’s Communist era, nor in the Orwellian 
utopia of 1984.”

Vaclav Klaus