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The crash occurs during process exit > (do_exit -> sched_mm_cid_exit) on an atomic bit-clear (lock btr) of > the CID bitmap. The faulting address is within a 2MB huge page that > returns a permissions violation on supervisor write access. > > The bug triggered 8 times over ~20 hours on a single boot, hitting > multiple unrelated processes (git, gce_workload_ce). Eventually D-Bus > died and systemd became non-functional, requiring a hard power-off. Can you confirm whether the following fix in Linus' tree fixes your issue ? commit 1e83ccd5921a ("sched/mmcid: Don't assume CID is CPU owned on mode switch") I suspect that it will soon be cherry picked into stable for an eventual v6.19.1. Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. https://www.efficios.com