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
..
bpf	bpf: add missing header file include	2023-04-18 17:21:06 +02:00
cgroup	memcg: fix possible use-after-free in memcg_write_event_control()	2023-02-01 15:21:53 +01:00
configs	…
debug	UBUNTU: SAUCE: debug: Lock down kgdb	2022-05-21 11:27:20 -03:00
dma	dma-debug: make things less spammy under memory pressure	2022-08-26 11:10:39 +02:00
events	perf: Fix possible memleak in pmu_dev_alloc()	2023-02-01 15:22:13 +01:00
gcov	gcov: add support for checksum field	2023-02-01 15:23:18 +01:00
irq	genirq/irqdesc: Don't try to remove non-existing sysfs files	2023-02-01 15:22:15 +01:00
livepatch	livepatch: fix race between fork and KLP transition	2023-01-06 08:43:53 -08:00
locking	locking/lockdep: Avoid RCU-induced noinstr fail	2022-01-13 18:42:05 +01:00
power	PM: hibernate: Fix mistake in kerneldoc comment	2023-02-01 15:22:13 +01:00
printk	printk: fix return value of printk.devkmsg __setup handler	2022-05-20 15:18:43 +02:00
rcu	rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()	2023-02-01 15:23:09 +01:00
sched	sched/rt: pick_next_rt_entity(): check list_entry	2023-05-12 17:14:59 +02:00
time	alarmtimer: Prevent starvation by small intervals and SIG_IGN	2023-04-18 17:21:05 +02:00
trace	tracing: Fix poll() and select() do not work on per_cpu trace_pipe and trace_pipe_raw	2023-04-18 17:21:01 +02:00
.gitignore	kbuild: update config_data.gz only when the content of .config is changed	2021-05-19 10:59:49 +02:00
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	…
Makefile	kbuild: update config_data.gz only when the content of .config is changed	2021-05-19 10:59:49 +02:00
acct.c	acct: fix potential integer overflow in encode_comp_t()	2023-02-01 15:23:09 +01:00
async.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-04-14 11:32:16 +02:00
audit.c	audit: improve audit queue handling when "audit=1" on cmdline	2022-03-29 09:13:56 +02:00
audit.h	audit: log AUDIT_TIME_* records only from rules	2022-05-20 15:18:33 +02:00
audit_fsnotify.c	audit: fix potential double free on error path from fsnotify_add_inode_mark	2022-10-17 15:02:07 +02:00
audit_tree.c	audit: move put_tree() to avoid trim_trees refcount underflow and UAF	2021-10-01 11:31:10 +02:00
audit_watch.c	…
auditfilter.c	…
auditsc.c	audit: log AUDIT_TIME_* records only from rules	2022-05-20 15:18:33 +02:00
backtracetest.c	…
bounds.c	…
capability.c	…
compat.c	…
configs.c	…
context_tracking.c	…
cpu.c	random: clear fast pool, crng, and batches in cpuhp bring up	2022-08-26 11:10:11 +02:00
cpu_pm.c	…
crash_core.c	…
crash_dump.c	…
cred.c	…
delayacct.c	…
dma.c	…
exec_domain.c	…
exit.c	exit: Use READ_ONCE() for all oops/warn limit reads	2023-03-21 10:09:02 +01:00
extable.c	…
fail_function.c	…
fork.c	copy_process(): Move fd_install() out of sighand->siglock critical section	2022-04-14 11:32:25 +02:00
freezer.c	…
futex.c	mm, futex: fix shared futex pgoff on shmem huge page	2021-08-13 09:44:31 +02:00
gen_kheaders.sh	…
groups.c	…
hung_task.c	…
iomem.c	…
irq_work.c	…
jump_label.c	jump_label: Fix usage in module __init	2021-11-25 12:09:02 +01:00
kallsyms.c	…
kcmp.c	…
kcov.c	…
kexec.c	…
kexec_core.c	…
kexec_elf.c	…
kexec_file.c	kexec_file: drop weak attribute from arch_kexec_apply_relocations[_add]	2022-08-26 11:11:25 +02:00
kexec_internal.h	…
kheaders.c	…
kmod.c	…
kprobes.c	kprobes: Skip clearing aggrprobe's post_handler in kprobe-on-ftrace case	2023-02-01 15:21:17 +01:00
ksysfs.c	…
kthread.c	kthread: Fix PF_KTHREAD vs to_kthread() race	2021-10-01 11:33:59 +02:00
latencytop.c	…
module-internal.h	…
module.c	module: Don't wait for GOING modules	2023-03-21 10:08:59 +01:00
module_signature.c	module: harden ELF info handling	2021-04-23 11:58:31 +02:00
module_signing.c	module: harden ELF info handling	2021-04-23 11:58:31 +02:00
notifier.c	…
nsproxy.c	…
padata.c	…
panic.c	exit: Use READ_ONCE() for all oops/warn limit reads	2023-03-21 10:09:02 +01:00
params.c	…
pid.c	…
pid_namespace.c	memcg: enable accounting for pids in nested pid namespaces	2021-10-12 16:31:40 -06:00
profile.c	profiling: fix shift too large makes kernel panic	2022-10-17 15:01:11 +02:00
ptrace.c	ptrace: Reimplement PTRACE_KILL by always sending SIGKILL	2022-08-26 11:07:09 +02:00
range.c	…
reboot.c	Revert "PM: ACPI: reboot: Use S5 for reboot"	2022-04-14 11:32:31 +02:00
relay.c	relay: fix type mismatch when allocating memory in relay_create_buf()	2023-02-01 15:22:18 +01:00
resource.c	…
rseq.c	…
seccomp.c	seccomp: Invalidate seccomp mode to catch death failures	2022-04-14 11:32:10 +02:00
signal.c	signal handling: don't use BUG_ON() for debugging	2022-09-16 10:59:30 +02:00
smp.c	smp: Fix offline cpu check in flush_smp_call_function_queue()	2022-06-22 14:50:41 +02:00
smpboot.c	…
smpboot.h	…
softirq.c	…
stackleak.c	…
stacktrace.c	…
stop_machine.c	…
sys.c	prlimit: do_prlimit needs to have a speculation check	2023-03-21 10:08:55 +01:00
sys_ni.c	kernel/sys_ni: add compat entry for fadvise64_64	2022-10-17 15:02:07 +02:00
sysctl-test.c	…
sysctl.c	proc: proc_skip_spaces() shouldn't think it is working on C strings	2023-02-01 15:21:48 +01:00
sysctl_binary.c	…
task_work.c	…
taskstats.c	…
test_kprobes.c	…
torture.c	…
tracepoint.c	tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing	2021-08-13 09:44:55 +02:00
tsacct.c	taskstats: Cleanup the use of task->exit_code	2022-04-14 11:32:19 +02:00
ucount.c	…
uid16.c	…
uid16.h	…
umh.c	…
up.c	smp: Fix smp_call_function_single_async prototype	2021-05-26 15:39:25 +02:00
user-return-notifier.c	…
user.c	…
user_namespace.c	…
utsname.c	…
utsname_sysctl.c	…
watchdog.c	watchdog: export lockup_detector_reconfigure	2022-10-17 15:02:02 +02:00
watchdog_hld.c	…
workqueue.c	workqueue: don't skip lockdep work dependency in cancel_work_sync()	2022-11-24 10:28:53 +01:00
workqueue_internal.h	…