rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P19562/1:b..l P1051/1:b..l P14893/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=126641, q=515 ncpus=2)
task:kworker/1:2 state:R running task stack:19288 pid:14893 tgid:14893 ppid:2 flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:seqcount_lockdep_reader_access+0x1e0/0x220 include/linux/seqlock.h:75
Code: f7 4d 85 ed 75 16 e8 5f fe cc f7 eb 15 e8 58 fe cc f7 e8 63 9e e7 01 4d 85 ed 74 ea e8 49 fe cc f7 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 66 43 c7 44 3c 09 00 00 43 c6 44 3c 0b 00
RSP: 0018:ffffc900097e79a0 EFLAGS: 00000293
RAX: ffffffff89c68c67 RBX: 0000000000000000 RCX: ffff8880226b3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900097e7a50 R08: ffffffff89c68c3d R09: 1ffffffff269e91a
R10: dffffc0000000000 R11: fffffbfff269e91b R12: dffffc0000000000
R13: 0000000000000200 R14: 0000000000000046 R15: 1ffff920012fcf34
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
gc_worker+0x316/0x1530 net/netfilter/nf_conntrack_core.c:1488
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
task:kworker/u8:5 state:R running task stack:20248 pid:1051 tgid:1051 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5763
Code: 2b 00 74 08 4c 89 f7 e8 fa d6 87 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90003e67980 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920007ccf3c RCX: d3986fdc51ec7900
RDX: dffffc0000000000 RSI: ffffffff8beae6e0 RDI: ffffffff8c3f9980
RBP: ffffc90003e67ad0 R08: ffffffff934f4847 R09: 1ffffffff269e908
R10: dffffc0000000000 R11: fffffbfff269e909 R12: 1ffff920007ccf38
R13: dffffc0000000000 R14: ffffc90003e679e0 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
batadv_nc_process_nc_paths+0xd6/0x3a0 net/batman-adv/network-coding.c:687
batadv_nc_worker+0x52c/0x610 net/batman-adv/network-coding.c:735
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
task:syz.1.4164 state:R running task stack:23888 pid:19562 tgid:19561 ppid:18200 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:xas_find+0x158/0x960 lib/xarray.c:1269
Code: 00 00 4c 89 7c 24 10 48 8b 7c 24 28 e8 71 7e ff ff 48 85 c0 74 3c 49 89 c7 e8 34 d7 e9 f5 e9 01 07 00 00 48 89 e8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 3e 07 00 00 0f b6 6d 00 31 ff 89 ee e8
RSP: 0018:ffffc90003a67070 EFLAGS: 00000a02
RAX: 1ffff1100f075108 RBX: 0000000000000941 RCX: ffff888021280000
RDX: 0000000000000002 RSI: ffffffff8fddf400 RDI: ffff8880783a8840
RBP: ffff8880783a8840 R08: 0000000000000007 R09: ffffffff8ba9b32b
R10: 0000000000000002 R11: ffff888021280000 R12: 1ffff9200074ce37
R13: ffffc90003a671b8 R14: dffffc0000000000 R15: fffffffffffffffe
find_get_entry mm/filemap.c:1990 [inline]
find_lock_entries+0x298/0x10f0 mm/filemap.c:2091
shmem_undo_range+0x2d6/0x1df0 mm/shmem.c:1005
shmem_truncate_range mm/shmem.c:1132 [inline]
shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1260
evict+0x532/0x950 fs/inode.c:704
__dentry_kill+0x20d/0x630 fs/dcache.c:610
dput+0x19f/0x2b0 fs/dcache.c:852
__fput+0x5f8/0x8a0 fs/file_table.c:430
task_work_run+0x24f/0x310 kernel/task_work.c:228
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x27f0 kernel/exit.c:882
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x1695/0x1730 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b63d79e79
RSP: 002b:00007f4b64ba20e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f4b63f15f88 RCX: 00007f4b63d79e79
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4b63f15f88
RBP: 00007f4b63f15f80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4b63f15f8c
R13: 0000000000000000 R14: 00007ffdb0e47820 R15: 00007ffdb0e47908
rcu: rcu_preempt kthread starved for 10597 jiffies! g126641 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:26448 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111
vkms_vblank_simulate: vblank timer overrun
hrtimer: interrupt took 1222275363 ns
vkms_vblank_simulate: vblank timer overrun