rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P10288 P5734/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=72953, q=480 ncpus=2)
task:kworker/u8:11 state:R running task stack:23976 pid:5734 tgid:5734 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5727
Code: c1 05 ea b0 98 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000c1dfa70 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200183bf50 RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffffffff8b4cddc0 RDI: ffffffff8bb118a0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2d39ae0
R10: ffffffff969cd707 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8ddba6a0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:754 [inline]
batadv_iv_ogm_schedule_buff+0x5ac/0x14d0 net/batman-adv/bat_iv_ogm.c:825
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
task:syz.2.909 state:R running task stack:26640 pid:10288 tgid:10285 ppid:9805 flags:0x00004002
Call Trace:
sched_show_task kernel/sched/core.c:7432 [inline]
sched_show_task+0x42e/0x650 kernel/sched/core.c:7406
rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:262 [inline]
print_other_cpu_stall kernel/rcu/tree_stall.h:639 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:799 [inline]
rcu_pending kernel/rcu/tree.c:4343 [inline]
rcu_sched_clock_irq+0x27f5/0x33e0 kernel/rcu/tree.c:2670
update_process_times+0x175/0x220 kernel/time/timer.c:2485
tick_sched_handle kernel/time/tick-sched.c:276 [inline]
tick_nohz_handler+0x376/0x530 kernel/time/tick-sched.c:297
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x657/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__local_bh_enable_ip+0xac/0x120 kernel/softirq.c:389
Code: 1d c1 a4 b3 7e 65 8b 05 ba a4 b3 7e a9 00 ff ff 00 74 4d bf 01 00 00 00 e8 a1 8b 0b 00 e8 3c ef 42 00 fb 65 8b 05 9c a4 b3 7e <85> c0 74 52 5b 5d c3 cc cc cc cc 65 8b 05 1e 54 b2 7e 85 c0 75 9e
RSP: 0018:ffffc900043ff950 EFLAGS: 00000206
RAX: 0000000080000000 RBX: 00000000fffffe01 RCX: 1ffffffff203aaa9
RDX: 0000000000000000 RSI: ffffffff8b4cdac0 RDI: ffffffff8bb118a0
RBP: ffffffff892fe804 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff901d999f R11: 0000000000000000 R12: ffffc900046e9000
R13: ffffc900043ffab0 R14: 0000000000000000 R15: 1ffff9200087ff3c
local_bh_enable include/linux/bottom_half.h:33 [inline]
bpf_test_run+0x3a9/0xa90 net/bpf/test_run.c:436
bpf_prog_test_run_skb+0xb6e/0x20f0 net/bpf/test_run.c:1094
bpf_prog_test_run kernel/bpf/syscall.c:4313 [inline]
__sys_bpf+0x10ba/0x49c0 kernel/bpf/syscall.c:5728
__do_sys_bpf kernel/bpf/syscall.c:5817 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5815 [inline]
__x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5815
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6bc3b7def9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6bc4994038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f6bc3d35f80 RCX: 00007f6bc3b7def9
RDX: 0000000000000050 RSI: 00000000200002c0 RDI: 000000000000000a
RBP: 00007f6bc3bf0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6bc3d35f80 R15: 00007ffdffaa3488
rcu: rcu_preempt kthread starved for 10198 jiffies! g72953 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:27584 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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+0x1a/0x20 drivers/acpi/processor_idle.c:111