Woody Lin 63acd42c0d sched/scs: Reset the shadow stack when idle_task_exit ... Commit f1a0a376ca ("sched/core: Initialize the idle task with preemption disabled") removed the init_idle() call from idle_thread_get(). This was the sole call-path on hotplug that resets the Shadow Call Stack (scs) Stack Pointer (sp). Not resetting the scs-sp leads to scs overflow after enough hotplug cycles. Therefore add an explicit scs_task_reset() to the hotplug code to make sure the scs-sp does get reset on hotplug. Fixes: f1a0a376ca ("sched/core: Initialize the idle task with preemption disabled") Signed-off-by: Woody Lin <woodylin@google.com> [peterz: Changelog] Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Valentin Schneider <valentin.schneider@arm.com> Link: https://lore.kernel.org/r/20211012083521.973587-1-woodylin@google.com		2021-10-19 17:46:11 +02:00
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Makefile	…
autogroup.c	…
autogroup.h	…
clock.c	…
completion.c	…
core.c	sched/scs: Reset the shadow stack when idle_task_exit	2021-10-19 17:46:11 +02:00
core_sched.c	…
cpuacct.c	…
cpudeadline.c	…
cpudeadline.h	…
cpufreq.c	…
cpufreq_schedutil.c	…
cpupri.c	…
cpupri.h	…
cputime.c	…
deadline.c	…
debug.c	sched/fair: Null terminate buffer when updating tunable_scaling	2021-10-01 13:57:57 +02:00
fair.c	…
features.h	…
idle.c	…
isolation.c	…
loadavg.c	…
membarrier.c	…
pelt.c	…
pelt.h	…
psi.c	…
rt.c	…
sched-pelt.h	…
sched.h	…
smp.h	…
stats.c	…
stats.h	…
stop_task.c	…
swait.c	…
topology.c	…
wait.c	…
wait_bit.c	…