kernel_optimize_test/kernel/sched
Juri Lelli 26d5eb3c25 sched/deadline: Fix BUG_ON condition for deboosted tasks
commit ddfc710395cccc61247348df9eb18ea50321cbed upstream.

Tasks the are being deboosted from SCHED_DEADLINE might enter
enqueue_task_dl() one last time and hit an erroneous BUG_ON condition:
since they are not boosted anymore, the if (is_dl_boosted()) branch is
not taken, but the else if (!dl_prio) is and inside this one we
BUG_ON(!is_dl_boosted), which is of course false (BUG_ON triggered)
otherwise we had entered the if branch above. Long story short, the
current condition doesn't make sense and always leads to triggering of a
BUG.

Fix this by only checking enqueue flags, properly: ENQUEUE_REPLENISH has
to be present, but additional flags are not a problem.

Fixes: 64be6f1f5f ("sched/deadline: Don't replenish from a !SCHED_DEADLINE entity")
Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20220714151908.533052-1-juri.lelli@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-29 17:19:24 +02:00
..
autogroup.c sched/autogroup: Make autogroup_path() always available 2019-06-24 19:23:40 +02:00
autogroup.h sched/headers: Simplify and clean up header usage in the scheduler 2018-03-04 12:39:29 +01:00
clock.c sched/clock: Use static_branch_likely() with sched_clock_running 2019-11-29 08:10:54 +01:00
completion.c completion: Use lockdep_assert_RT_in_threaded_ctx() in complete_all() 2020-03-23 18:40:25 +01:00
core.c sched/core: Export pelt_thermal_tp 2022-04-08 14:40:03 +02:00
cpuacct.c sched/cpuacct: Fix charge cpuacct.usage_sys 2020-05-19 20:34:14 +02:00
cpudeadline.c sched/deadline: Implement fallback mechanism for !fit case 2020-06-15 14:10:05 +02:00
cpudeadline.h sched/headers: Simplify and clean up header usage in the scheduler 2018-03-04 12:39:29 +01:00
cpufreq_schedutil.c cpufreq: schedutil: Use kobject release() method to free sugov_tunables 2021-10-06 15:55:45 +02:00
cpufreq.c cpufreq: Avoid leaving stale IRQ work items during CPU offline 2019-12-12 17:59:43 +01:00
cpupri.c sched/rt: cpupri_find: Trigger a full search as fallback 2020-03-20 13:06:20 +01:00
cpupri.h sched/rt: Optimize cpupri_find() on non-heterogenous systems 2020-03-06 12:57:27 +01:00
cputime.c cputime, cpuacct: Include guest time in user time in cpuacct.stat 2022-01-27 10:54:25 +01:00
deadline.c sched/deadline: Fix BUG_ON condition for deboosted tasks 2022-07-29 17:19:24 +02:00
debug.c sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa 2022-04-08 14:40:03 +02:00
fair.c sched/fair: Fix cfs_rq_clock_pelt() for throttled cfs_rq 2022-06-09 10:21:02 +02:00
features.h sched,fair: Alternative sched_slice() 2021-05-11 14:47:31 +02:00
idle.c sched/idle: Make the idle timer expire in hard interrupt context 2021-09-26 14:09:02 +02:00
isolation.c isolcpus: Affine unbound kernel threads to housekeeping cpus 2020-06-15 14:10:03 +02:00
loadavg.c sched: nohz: stop passing around unused "ticks" parameter. 2020-07-22 10:22:04 +02:00
Makefile kcsan: Improve various small stylistic details 2019-11-20 10:47:23 +01:00
membarrier.c kernel: delete repeated words in comments 2022-02-01 17:25:45 +01:00
pelt.c sched: Add a tracepoint to track rq->nr_running 2020-07-08 11:39:02 +02:00
pelt.h sched/fair: Fix cfs_rq_clock_pelt() for throttled cfs_rq 2022-06-09 10:21:02 +02:00
psi.c psi: Fix uaf issue when psi trigger is destroyed while being polled 2022-02-05 12:37:55 +01:00
rt.c sched/rt: Try to restart rt period timer when rt runtime exceeded 2022-01-27 10:53:54 +01:00
sched-pelt.h sched/fair: Fix "runnable_avg_yN_inv" not used warnings 2019-06-17 12:15:58 +02:00
sched.h sched/fair: Fix cfs_rq_clock_pelt() for throttled cfs_rq 2022-06-09 10:21:02 +02:00
smp.h sched/headers: Split out open-coded prototypes into kernel/sched/smp.h 2020-05-28 11:03:20 +02:00
stats.c proc: introduce proc_create_seq{,_data} 2018-05-16 07:23:35 +02:00
stats.h psi: Move PF_MEMSTALL out of task->flags 2020-03-20 13:06:19 +01:00
stop_task.c treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
swait.c sched/swait: Prepare usage in completions 2020-03-21 16:00:23 +01:00
topology.c sched/topology: Fix sched_domain_topology_level alloc in sched_init_numa() 2022-03-08 19:09:34 +01:00
wait_bit.c sched/wait: fix ___wait_var_event(exclusive) 2019-12-17 13:32:50 +01:00
wait.c wait: add wake_up_pollfree() 2021-12-14 11:32:39 +01:00