Pietro Borrello 094ea14cf2 sched/rt: pick_next_rt_entity(): check list_entry ... BugLink: https://bugs.launchpad.net/bugs/2017706 [ Upstream commit 7c4a5b89a0b5a57a64b601775b296abf77a9fe97 ] Commit 326587b840 ("sched: fix goto retry in pick_next_task_rt()") removed any path which could make pick_next_rt_entity() return NULL. However, BUG_ON(!rt_se) in _pick_next_task_rt() (the only caller of pick_next_rt_entity()) still checks the error condition, which can never happen, since list_entry() never returns NULL. Remove the BUG_ON check, and instead emit a warning in the only possible error condition here: the queue being empty which should never happen. Fixes: 326587b840 ("sched: fix goto retry in pick_next_task_rt()") Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Phil Auld <pauld@redhat.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/20230128-list-entry-null-check-sched-v3-1-b1a71bd1ac6b@diag.uniroma1.it Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Luke Nowakowski-Krijger <luke.nowakowskikrijger@canonical.com> Signed-off-by: Stefan Bader <stefan.bader@canonical.com>		2023-05-12 17:14:59 +02:00
..
Makefile	…
autogroup.c	…
autogroup.h	…
clock.c	…
completion.c	…
core.c	panic: Consolidate open-coded panic_on_warn checks	2023-03-21 10:09:01 +01:00
cpuacct.c	…
cpudeadline.c	…
cpudeadline.h	…
cpufreq.c	…
cpufreq_schedutil.c	…
cpupri.c	…
cpupri.h	…
cputime.c	…
deadline.c	sched/deadline,rt: Remove unused parameter from pick_next_[rt|dl]_entity()	2023-05-12 17:14:59 +02:00
debug.c	…
fair.c	sched/fair: Fix cfs_rq_clock_pelt() for throttled cfs_rq	2022-08-26 11:07:41 +02:00
features.h	sched/rt: Disable RT_RUNTIME_SHARE by default	2022-09-16 10:59:13 +02:00
idle.c	…
isolation.c	…
loadavg.c	…
membarrier.c	…
pelt.c	…
pelt.h	sched/fair: Fix cfs_rq_clock_pelt() for throttled cfs_rq	2022-08-26 11:07:41 +02:00
psi.c	sched/psi: Fix use-after-free in ep_remove_wait_queue()	2023-04-18 17:21:04 +02:00
rt.c	sched/rt: pick_next_rt_entity(): check list_entry	2023-05-12 17:14:59 +02:00
sched-pelt.h	…
sched.h	sched/fair: Fix cfs_rq_clock_pelt() for throttled cfs_rq	2022-08-26 11:07:41 +02:00
stats.c	…
stats.h	…
stop_task.c	…
swait.c	…
topology.c	…
wait.c	…
wait_bit.c	…