linux/kernel/sched
Linus Torvalds 673dab7eac Scheduler fixes:
- Fix LLC mis-scheduling bugs (Tim Chen, Lu Wang)
 
  - Fix cache-grouping related scheduling statistics UAF bugs (Tim Chen)
 
  - Skip kernel threads for cache aware scheduling to rubustify the code
    (Chen Yu)
 
  - Refresh LLC capacity across CPU hotplug, to fix capacity
    underestimation bug (Davi Chaves Azevedo)
 
  - Account PSI IRQ time to the execution context, not the scheduling
    context, to fix proxy scheduling accounting bug (Zhan Xusheng)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:

 - Fix LLC mis-scheduling bugs (Tim Chen, Lu Wang)

 - Fix cache-grouping related scheduling statistics UAF bugs (Tim Chen)

 - Skip kernel threads for cache aware scheduling to rubustify the code
   (Chen Yu)

 - Refresh LLC capacity across CPU hotplug, to fix capacity
   underestimation bug (Davi Chaves Azevedo)

 - Account PSI IRQ time to the execution context, not the scheduling
   context, to fix proxy scheduling accounting bug (Zhan Xusheng)

* tag 'sched-urgent-2026-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/core: Account PSI IRQ time to the execution context, not the scheduling context
  sched/cache: Refresh LLC capacity across CPU hotplug, to fix capacity underestimation bug
  sched/cache: Skip kernel threads for cache aware scheduling to rubustify the code
  sched/cache: Introduce task_struct->sched_cache_grp to fix UAF
  sched/cache: Decouple sched_cache_group from mm to fix UAF
  sched/cache: Honor migrate_llc_task semantics in active load balance, to fix LLC mis-scheduling bug
  sched/cache: Keep nr_pref_llc_running in the runnable domain, to fix LLC mis-scheduling bug
2026-09-27 08:24:16 -07:00
..
ext sched_ext: Fixes for v7.3-rc4 2026-09-24 15:04:11 -07:00
autogroup.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
autogroup.h sched: Clean up and standardize #if/#else/#endif markers in sched/autogroup.[ch] 2025-06-13 08:47:14 +02:00
build_policy.c sched_ext: Move scx_dispatch_sched() to a new inlines.h 2026-07-15 13:37:59 -10:00
build_utility.c sched/smp: Make SMP unconditional 2025-06-13 08:47:18 +02:00
clock.c sched/clock: Avoid false sharing for sched_clock_irqtime 2026-02-03 12:04:19 +01:00
completion.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
core_sched.c sched: Unify SMT active check via sched_smt_active() 2026-05-19 12:17:37 +02:00
core.c sched/core: Account PSI IRQ time to the execution context, not the scheduling context 2026-09-24 10:32:50 +02:00
cpuacct.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpudeadline.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpudeadline.h sched/deadline: only set free_cpus for online runqueues 2025-10-16 11:13:49 +02:00
cpufreq_schedutil.c cpufreq: schedutil: Fix rate limit overflow 2026-08-15 19:00:11 +02:00
cpufreq.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
cpupri.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cpupri.h sched/smp: Make SMP unconditional 2025-06-13 08:47:18 +02:00
cputime.c Merge branch 'idle-time-acc' into features 2026-06-16 16:21:46 +02:00
deadline.c sched/rt,dl: Skip migrate-disabled tasks when picking a push candidate 2026-09-02 09:17:49 +02:00
debug.c sched/debug: Remove unused schedstats 2026-06-30 10:56:57 +02:00
fair.c sched/cache: Skip kernel threads for cache aware scheduling to rubustify the code 2026-09-22 10:50:49 +02:00
features.h sched/rt: Have RT_PUSH_IPI be default off for non PREEMPT_RT 2026-05-19 12:17:39 +02:00
idle.c sched_ext: Route ops.update_idle() to sub-schedulers and re-notify owed scheds 2026-07-13 22:18:44 -10:00
isolation.c sched/isolation: Defer freeing of cpumask memblock memory to initcall 2026-08-13 12:37:03 +02:00
loadavg.c Merge branch 'tip/sched/urgent' 2025-07-14 17:16:28 +02:00
Makefile sched: Enable context analysis for core.c and fair.c 2026-01-05 16:43:36 +01:00
membarrier.c Locking updates for v7.2: 2026-06-15 14:21:14 +05:30
pelt.c sched/eevdf: Move to a single runqueue 2026-06-30 10:56:53 +02:00
pelt.h sched/fair: Switch to task based throttle model 2025-09-03 10:03:14 +02:00
psi.c Merge branch 'sched/urgent' 2026-08-14 16:12:58 +02:00
rq-offsets.c sched: Make migrate_{en,dis}able() inline 2025-09-25 09:57:16 +02:00
rt.c sched/rt,dl: Skip migrate-disabled tasks when picking a push candidate 2026-09-02 09:17:49 +02:00
sched-pelt.h sched: Make clangd usable 2025-06-11 11:20:53 +02:00
sched.h sched_ext: Changes for v7.3 2026-08-20 11:01:37 -07:00
smp.h sched: Make clangd usable 2025-06-11 11:20:53 +02:00
stats.c sched/smp: Use the SMP version of schedstats 2025-06-13 08:47:21 +02:00
stats.h sched/fair: Co-locate cfs_rq and sched_entity in cfs_tg_state 2026-06-02 12:26:10 +02:00
stop_task.c sched: Rework prev_balance() to avoid stale prev references 2026-06-02 12:26:06 +02:00
swait.c sched: Make clangd usable 2025-06-11 11:20:53 +02:00
syscalls.c Linux 7.0-rc4 2026-03-17 07:14:42 +01:00
topology.c sched/cache: Refresh LLC capacity across CPU hotplug, to fix capacity underestimation bug 2026-09-22 10:50:54 +02:00
wait_bit.c futex: Fix might_sleep() warning in futex_pivot_pending() 2026-08-20 18:26:42 +02:00
wait.c futex: Fix might_sleep() warning in futex_pivot_pending() 2026-08-20 18:26:42 +02:00