Trap invalid opcode id : ....

Hi - I've just upgrade my 2 Thinkpads to the latest Slackware current - and that specifically means the new 6.9.0 kernel. And all of a sudden programs are falling over left right and centre. They end up in the kernel log as "Trap invalid opcode id ....". If I recall, a new kernel firmware image was also upgraded. Pretty sure one of these is causing the problem. Anyone else seeing this ?
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