Neeraj Upadhyay a4533cc0a5 rcu-tasks: Report stalls during synchronize_srcu() in rcu_tasks_postscan() ...

The call to synchronize_srcu() from rcu_tasks_postscan() can be stalled
by a task getting stuck in do_exit() between that function's calls to
exit_tasks_rcu_start() and exit_tasks_rcu_finish().   To ease diagnosis
of this situation, print a stall warning message every rcu_task_stall_info
period when rcu_tasks_postscan() is stalled.

[ paulmck: Adjust to handle CONFIG_SMP=n. ]

Acked-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Reported-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/rcu/20230111212736.GA1062057@paulmck-ThinkPad-P17-Gen-1/
Signed-off-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>

2023-04-05 13:47:44 +00:00

..

bpf

Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-02-23 17:09:35 -08:00

cgroup

Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2023-02-21 18:24:12 -08:00

configs

mm, slob: rename CONFIG_SLOB to CONFIG_SLOB_DEPRECATED

2022-12-01 00:09:20 +01:00

debug

kdb: use srcu console list iterator

2022-12-02 11:25:00 +01:00

dma

swiotlb: mark swiotlb_memblock_alloc() as __init

2023-02-22 06:44:48 -08:00

entry

entry: kmsan: introduce kmsan_unpoison_entry_regs()

2022-10-03 14:03:25 -07:00

events

Merge tag 'char-misc-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2023-02-24 12:47:33 -08:00

futex

Merge tag 'locking_urgent_for_v6.2_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-01-01 11:15:05 -08:00

gcov

gcov: add support for checksum field

2022-12-21 14:31:52 -08:00

irq

Merge tag 'irq-urgent-2023-03-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-03-05 11:19:16 -08:00

kcsan

kcsan: test: don't put the expect array on the stack

2023-01-02 08:59:33 -08:00

livepatch

Merge tag 'livepatching-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching

2023-02-23 14:00:10 -08:00

locking

Merge tag 'rcu.2023.02.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

2023-02-21 10:45:51 -08:00

module

Merge tag 'modules-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

2023-02-23 14:05:08 -08:00

power

Merge branches 'powercap', 'pm-domains', 'pm-em' and 'pm-opp'

2023-02-15 20:06:26 +01:00

printk

Merge tag 'printk-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

2023-02-23 13:49:45 -08:00

rcu

rcu-tasks: Report stalls during synchronize_srcu() in rcu_tasks_postscan()

2023-04-05 13:47:44 +00:00

sched

Merge tag 'pm-6.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2023-03-03 10:30:58 -08:00

time

rcu: Fix missing TICK_DEP_MASK_RCU_EXP dependency check

2023-04-05 13:47:43 +00:00

trace

Merge tag 'block-6.3-2023-03-03' of git://git.kernel.dk/linux

2023-03-03 10:21:39 -08:00

.gitignore

…

acct.c

acct: fix potential integer overflow in encode_comp_t()

2022-11-30 16:13:18 -08:00

async.c

Revert "module, async: async_synchronize_full() on module init iff async is used"

2022-02-03 11:20:34 -08:00

audit_fsnotify.c

audit: fix potential double free on error path from fsnotify_add_inode_mark

2022-08-22 18:50:06 -04:00

audit_tree.c

audit: use fsnotify group lock helpers

2022-04-25 14:37:28 +02:00

audit_watch.c

audit_init_parent(): constify path

2022-09-01 17:39:30 -04:00

audit.c

audit: use time_after to compare time

2022-08-29 19:47:03 -04:00

audit.h

audit: remove selinux_audit_rule_update() declaration

2022-09-07 11:30:15 -04:00

auditfilter.c

Merge tag 'audit-pr-20220110' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

2022-01-11 13:08:21 -08:00

auditsc.c

capability: just use a 'u64' instead of a 'u32[2]' array

2023-03-01 10:01:22 -08:00

backtracetest.c

…

bounds.c

mm: multi-gen LRU: minimal implementation

2022-09-26 19:46:09 -07:00

capability.c

capability: just use a 'u64' instead of a 'u32[2]' array

2023-03-01 10:01:22 -08:00

cfi.c

cfi: Switch to -fsanitize=kcfi

2022-09-26 10:13:13 -07:00

compat.c

…

configs.c

…

context_tracking.c

context_tracking: Fix noinstr vs KASAN

2023-01-13 11:48:18 +01:00

cpu_pm.c

cpuidle, cpu_pm: Remove RCU fiddling from cpu_pm_{enter,exit}()

2023-01-13 11:48:15 +01:00

cpu.c

cpu/hotplug: Do not bail-out in DYING/STARTING sections

2022-12-02 12:43:02 +01:00

crash_core.c

mm: remove 'First tail page' members from struct page

2023-02-02 22:32:59 -08:00

crash_dump.c

…

cred.c

cred: Do not default to init_cred in prepare_kernel_cred()

2022-11-01 10:04:52 -07:00

delayacct.c

delayacct: support re-entrance detection of thrashing accounting

2022-09-26 19:46:07 -07:00

dma.c

…

exec_domain.c

…

exit.c

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2023-02-21 15:27:48 -08:00

extable.c

context_tracking: Take NMI eqs entrypoints over RCU

2022-07-05 13:32:59 -07:00

fail_function.c

kernel/fail_function: fix memory leak with using debugfs_lookup()

2023-02-08 13:36:22 +01:00

fork.c

Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-02-23 17:09:35 -08:00

freezer.c

freezer,sched: Rewrite core freezer logic

2022-09-07 21:53:50 +02:00

gen_kheaders.sh

kheaders: use standard naming for the temporary directory

2023-01-22 23:43:34 +09:00

groups.c

security: Add LSM hook to setgroups() syscall

2022-07-15 18:21:49 +00:00

hung_task.c

hung_task: print message when hung_task_warnings gets down to zero.

2023-02-09 17:03:20 -08:00

iomem.c

…

irq_work.c

irq_work: use kasan_record_aux_stack_noalloc() record callstack

2022-04-15 14:49:55 -07:00

jump_label.c

jump_label: Prevent key->enabled int overflow

2022-12-01 15:53:05 -08:00

kallsyms_internal.h

kallsyms: Reduce the memory occupied by kallsyms_seqs_of_names[]

2022-11-12 18:47:36 -08:00

kallsyms_selftest.c

kallsyms: Fix scheduling with interrupts disabled in self-test

2023-01-13 15:09:08 -08:00

kallsyms_selftest.h

kallsyms: Add self-test facility

2022-11-15 00:42:02 -08:00

kallsyms.c

kallsyms: Add self-test facility

2022-11-15 00:42:02 -08:00

kcmp.c

…

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.locks

…

Kconfig.preempt

Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"

2022-03-31 10:36:55 +02:00

kcov.c

mm: replace vma->vm_flags direct modifications with modifier calls

2023-02-09 16:51:39 -08:00

kexec_core.c

Merge tag 'mm-nonmm-stable-2023-02-20-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-02-23 17:55:40 -08:00

kexec_elf.c

…

kexec_file.c

kexec: introduce sysctl parameters kexec_load_limit_*

2023-02-02 22:50:05 -08:00

kexec_internal.h

panic, kexec: make __crash_kexec() NMI safe

2022-09-11 21:55:06 -07:00

kexec.c

kexec: introduce sysctl parameters kexec_load_limit_*

2023-02-02 22:50:05 -08:00

kheaders.c

…

kmod.c

…

kprobes.c

x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range

2023-02-21 08:49:16 +09:00

ksysfs.c

kernels/ksysfs.c: export kernel address bits

2023-01-20 14:30:45 +01:00

kthread.c

kthread_worker: check all delayed works when destroy kthread worker

2023-02-02 22:50:02 -08:00

latencytop.c

latencytop: use the last element of latency_record of system

2022-09-11 21:55:12 -07:00

Makefile

Merge tag 'hardening-v6.2-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2022-12-23 12:00:24 -08:00

module_signature.c

…

notifier.c

kernel/notifier: Remove CONFIG_SRCU

2023-02-02 16:26:06 -08:00

nsproxy.c

fs/exec: switch timens when a task gets a new mm

2022-10-25 15:15:52 -07:00

padata.c

Merge tag 'kbuild-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2022-12-19 12:33:32 -06:00

panic.c

panic: fix the panic_print NMI backtrace setting

2023-03-02 21:54:23 -08:00

params.c

kernel/params.c: Use kstrtobool() instead of strtobool()

2023-01-25 14:07:21 -08:00

pid_namespace.c

Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-02-23 17:09:35 -08:00

pid_sysctl.h

mm/memfd: add MFD_NOEXEC_SEAL and MFD_EXEC

2023-01-18 17:12:37 -08:00

pid.c

gfs2: Add glockfd debugfs file

2022-06-29 13:07:16 +02:00

profile.c

kernel/profile.c: simplify duplicated code in profile_setup()

2022-09-11 21:55:12 -07:00

ptrace.c

rseq: Introduce extensible rseq ABI

2022-12-27 12:52:10 +01:00

range.c

…

reboot.c

kernel/reboot: Add SYS_OFF_MODE_RESTART_PREPARE mode

2022-10-04 15:59:36 +02:00

regset.c

…

relay.c

mm: replace vma->vm_flags direct modifications with modifier calls

2023-02-09 16:51:39 -08:00

resource_kunit.c

…

resource.c

dax/kmem: Fix leak of memory-hotplug resources

2023-02-17 14:58:01 -08:00

rseq.c

rseq: Extend struct rseq with per-memory-map concurrency ID

2022-12-27 12:52:12 +01:00

scftorture.c

scftorture: Fix distribution of short handler delays

2022-04-11 17:07:29 -07:00

scs.c

scs: add support for dynamic shadow call stacks

2022-11-09 18:06:35 +00:00

seccomp.c

seccomp: fix kernel-doc function name warning

2023-01-13 17:01:06 -08:00

signal.c

sched: Introduce per-memory-map concurrency ID

2022-12-27 12:52:11 +01:00

smp.c

Merge tag 'bitmap-6.1-rc1' of https://github.com/norov/linux

2022-10-10 12:49:34 -07:00

smpboot.c

smpboot: use atomic_try_cmpxchg in cpu_wait_death and cpu_report_death

2022-09-11 21:55:10 -07:00

smpboot.h

…

softirq.c

context_tracking: Take IRQ eqs entrypoints over RCU

2022-07-05 13:32:59 -07:00

stackleak.c

stackleak: add on/off stack variants

2022-05-08 01:33:09 -07:00

stacktrace.c

uaccess: remove CONFIG_SET_FS

2022-02-25 09:36:06 +01:00

static_call_inline.c

static_call: Add call depth tracking support

2022-10-17 16:41:16 +02:00

static_call.c

static_call: Don't make __static_call_return0 static

2022-04-05 09:59:38 +02:00

stop_machine.c

Merge tag 'sched-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-05-24 11:11:13 -07:00

sys_ni.c

kernel/sys_ni: add compat entry for fadvise64_64

2022-08-20 15:17:45 -07:00

sys.c

Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-02-23 17:09:35 -08:00

sysctl-test.c

kernel/sysctl-test: use SYSCTL_{ZERO/ONE_HUNDRED} instead of i_{zero/one_hundred}

2022-09-08 16:56:45 -07:00

sysctl.c

sysctl: fix proc_dobool() usability

2023-02-21 13:34:07 -08:00

task_work.c

task_work: use try_cmpxchg in task_work_add, task_work_cancel_match and task_work_run

2022-09-11 21:55:10 -07:00

taskstats.c

genetlink: start to validate reserved header bytes

2022-08-29 12:47:15 +01:00

torture.c

torture: Fix hang during kthread shutdown phase

2023-01-05 12:10:35 -08:00

tracepoint.c

tracepoint: Allow livepatch module add trace event

2023-02-18 14:34:36 -05:00

tsacct.c

taskstats: version 12 with thread group and exe info

2022-04-29 14:38:03 -07:00

ucount.c

ucounts: Split rlimit and ucount values and max values

2022-05-18 18:24:57 -05:00

uid16.c

…

uid16.h

…

umh.c

umh: simplify the capability pointer logic

2023-03-03 16:18:19 -08:00

up.c

…

user_namespace.c

userns: fix a struct's kernel-doc notation

2023-02-02 22:50:04 -08:00

user-return-notifier.c

…

user.c

kernel/user: Allow user_struct::locked_vm to be usable for iommufd

2022-11-30 20:16:49 -04:00

usermode_driver.c

blob_to_mnt(): kern_unmount() is needed to undo kern_mount()

2022-05-19 23:25:47 -04:00

utsname_sysctl.c

kernel/utsname_sysctl.c: Fix hostname polling

2022-10-23 12:01:01 -07:00

utsname.c

…

watch_queue.c

Merge tag 'docs-6.0' of git://git.lwn.net/linux

2022-08-02 19:24:24 -07:00

watchdog_hld.c

Revert "printk: add functions to prefer direct printing"

2022-06-23 18:41:40 +02:00

watchdog.c

Merge tag 'powerpc-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2022-08-06 16:38:17 -07:00

workqueue_internal.h

…

workqueue.c

workqueue: Fold rebind_worker() within rebind_workers()

2023-01-13 07:50:40 -10:00