Linux hardware guru Greg Kroah-Hartman on the use of Linux in safety-critical systems <https://www.theregister.com/2020/10/26/linux_kernel_intel/>: What does he think about using Linux in a safety-critical environment? “Anyone who’s ever flown in a plane, it’s been controlled by Linux, for the past decade, so it’s in safety-critical environments today,” he said, grinning. “It runs telecoms systems, it runs stock markets, it runs satellites, it keeps mega yachts from tipping over, it’s been in automotive as well, in the head units for a long time … nobody wants to write an operating system, they just want to write applications to solve their problems.” He also has a warning for those trying to selectively backport security fixes to older kernel versions.