rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P3842/1:b..l
(detected by 0, t=10502 jiffies, g=18697, q=74 ncpus=2)
task:kworker/1:9 state:R running task stack:23040 pid:3842 ppid:2 flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 3f aa 77 00 f6 44 24 61 02 0f 85 84 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:ffffc90004e679a0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920009ccf40 RCX: 1ffff920009ccee0
RDX: dffffc0000000000 RSI: ffffffff8b0c13e0 RDI: ffffffff8b5d62c0
RBP: ffffc90004e67ae8 R08: dffffc0000000000 R09: fffffbfff20e7645
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920009ccf3c
R13: dffffc0000000000 R14: ffffc90004e67a00 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
rcu_read_lock include/linux/rcupdate.h:791 [inline]
gc_worker+0x29b/0x1530 net/netfilter/nf_conntrack_core.c:1501
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g18697 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=10873
rcu: rcu_preempt kthread starved for 10502 jiffies! g18697 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26712 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5313 Comm: syz.4.302 Not tainted 6.1.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:match_held_lock+0x0/0xb0 kernel/locking/lockdep.c:5107
Code: 5d 98 f4 03 00 75 cf 48 c7 c7 00 01 0c 8b 48 c7 c6 40 01 0c 8b e8 20 21 ad f6 0f 0b eb b6 e8 e7 fa ff ff 0f 1f 80 00 00 00 00 <55> 53 bd 01 00 00 00 48 39 77 10 74 67 48 89 fb 81 7f 20 00 00 10
RSP: 0000:ffffc90004e77bb0 EFLAGS: 00000097
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff88801bae9dc0
RDX: ffff88801bae9dc0 RSI: ffff88805b9cf300 RDI: ffff88801baea8a0
RBP: ffff88801baea8a0 R08: ffffffff88cedba7 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000046
R13: ffff88801bae9dc0 R14: 00000000ffffffff R15: ffff88805b9cf300
FS: 0000555555ca0500(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2dc10ff8 CR3: 000000005cbe8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_is_held kernel/locking/lockdep.c:5403 [inline]
lock_is_held_type+0xa4/0x180 kernel/locking/lockdep.c:5705
lock_is_held include/linux/lockdep.h:283 [inline]
advance_sched+0x69/0x970 net/sched/sch_taprio.c:701
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0033:0x7fde5065156d
Code: 72 6e 41 0f 11 0c 24 48 8b 77 f8 48 89 f8 48 89 eb eb 12 66 2e 0f 1f 84 00 00 00 00 00 48 8b 4b 08 48 83 c3 08 48 39 d1 72 f3 <48> 83 e8 08 48 39 f2 73 17 66 2e 0f 1f 84 00 00 00 00 00 48 8b 70
RSP: 002b:00007ffdc82cfeb0 EFLAGS: 00000246
RAX: 00007fde4fa9a7e8 RBX: 00007fde4fa99378 RCX: ffffffff81c58b9d
RDX: ffffffff81c58b9d RSI: ffffffff81c58b0f RDI: 00007fde4fa9ad80
RBP: 00007fde4fa98498 R08: 00007fde4fa99908 R09: 00007fde50902000
R10: 0000000081bf1141 R11: 0000000000000014 R12: 00007fde4fa98490
R13: 0000000000000018 R14: 00007fde4f9fb008 R15: 000000000002f648