OpenBSD Errata: June 8, 2021 (cpuswitch inteldrm)
7 June, 2021 by firstname.lastname@example.org | openbsd
Errata patches for cpuswitch and inteldrm have been released for OpenBSD 6.8 and 6.9. Recent Intel or any AMD machines could crash as the kernel did not flush all TLBs that multi threaded processes require. Disable PPGTT on Intel machines with cherryview/braswell graphics to avoid memory corruption. Binary updates for the amd64 and i386 platform are available via the syspatch utility. Source code patches can be found on the respective errata page: https://www.openbsd.org/errata68.html https://www.openbsd.org/errata69.html As these affect the kernel, a reboot will be needed after patching.