Hi, On 2022-10-04 19:44, debian-bug-rep...@p0358.net wrote: > > Is there an easy way to unbrick a system affected by the issue? such as > > a kernel-line option or a configuration file in /etc? I don't see how I > > can set a GLIBC_TUNABLES environment variable for the whole system. > > I was trying during my testing to set such option globally somehow, but > failed, though maybe some method for this exists. As it stands I only see > two possibilities of unbricking a system, both assuming you can access the > partition externally from some bootable system: > > 1. Downgrade the affected libc6 package to a version before the one causing > issues (either chroot and dpkg, or just extract and physically replace the > files), after booting apt-mark hold libc6 to prevent faulty update from > being installed until the issue is fixed > > 2. Or install intel-microcode package, assuming the microcode update adds > the missing instructions in particular case, basically coincidentally fixing > this issue (the updated CPU microcode is loaded on every bootup)
Please note that the microcode update might also be done through a BIOS/firmware update if available. Regards Aurelien -- Aurelien Jarno GPG: 4096R/1DDD8C9B aurel...@aurel32.net http://www.aurel32.net