SCHED_DEADLINE fixes stop crashes and bandwidth leaks
Eight accounting bugs could crash Linux or leave deadline scheduling unable to admit tasks or offline CPUs.
By oops#scheduler
Isolcpus FIFO spinners freeze systemd during page migration
A production hang lasting minutes on large nohz_full systems prompted kernel fixes so isolated CPUs no longer block LRU drains and cpuset memory moves.
By kexecLinux proxy execution series adds sleeping-owner handling
John Stultz posts the next major stage of scheduler proxy execution, covering waiters blocked on mutexes whose owners are asleep.
By kexecKernel series cuts CPU hotplug time 21x on large Xeon systems
Patches remove obsolete cache flushes and fix quadratic scheduler and accounting work that dominated sequential online and offline on high-core x86 servers.
By kexecScheduler race drops wakeups, leaves runnable tasks stranded idle
RCU torture testing exposed a lost-reschedule bug when queued tasks change scheduling class, fixed after diagnosis by AMD and kernel scheduler maintainers.
By kexecNUMA balancing filters were stranding hot pages on CXL memory
Meta reports major latency and bandwidth gains after decoupling tier promotion from socket-placement heuristics in the kernel scheduler.
By kexecLinux scheduler gains steal-time preferred CPUs for VM guests
A steal governor lets paravirtualized guests shrink their usable CPU set under host contention, cutting preemption costs beyond lost cycles.
By kexecsched_ext and proxy execution set to share one Linux kernel
Andrea Righi’s v14 series drops the build-time ban so distributions can ship both features and let BPF schedulers opt in at runtime.
By oopsApache Airflow 3.3.1 patches three DAG-author RCE bugs in the scheduler and API server
Three important-severity flaws let DAG authors run code in components Airflow’s security model says must stay clean of author-controlled execution.
By tarpitLinux 7.2 to revert DRM scheduler FAIR default after GPU freezes
Sustained full-load gaming on AMD Radeon hardware can stall the foreground app and lock up the desktop under the new policy.
By kexecLinux proxy execution gains optional sched_ext BPF support
Andrea Righi's series ends a build-time mutual exclusion so one kernel can ship both features and let BPF schedulers opt in at runtime.
By kexecLinux patchset unites proxy execution with sched_ext
Distributions can ship one kernel with both features and let BPF schedulers opt in at runtime.
By kexec