On 07/01/2026 4:25 am, Andy Smith wrote:
d) A bug in your Debian machine's kernel.
That case I expect to see errors in "journalctl -b ..." with proper boot ID or, alternatively, with suitable time range.
Try to exclude USB from your tests.
I consider USB as suspicious here as well.Since it happens if files are copied from another machine, I would not exclude RAM failure, so memtest86+ may be tried.
I believe it is unlikely, but if it is really 7z bug then it might be related to switching to another 7z implementation happened in bookworm.