rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5897/1:b..l P6609/3:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=18257, q=603 ncpus=2)
task:dhcpcd-run-hook state:R  running task     stack:28152 pid:6609  tgid:6609  ppid:6608   task_flags:0x400040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5260 [inline]
 __schedule+0x14ea/0x5050 kernel/sched/core.c:6867
 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7051
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 filemap_map_pages+0x1952/0x2000 mm/filemap.c:3931
 do_fault_around mm/memory.c:5716 [inline]
 do_read_fault mm/memory.c:5749 [inline]
 do_fault mm/memory.c:5892 [inline]
 do_pte_missing+0x2036/0x37a0 mm/memory.c:4404
 handle_pte_fault mm/memory.c:6276 [inline]
 __handle_mm_fault mm/memory.c:6414 [inline]
 handle_mm_fault+0x1b8c/0x32a0 mm/memory.c:6583
 do_user_addr_fault+0xa73/0x1360 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f3a5c6b9490
RSP: 002b:00007ffc689ddfb8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007ffc689ddfc8 RCX: 00007f3a5c748670
RDX: 0000000000000000 RSI: 0000000000000018 RDI: 00007f3a5c5aef60
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f3a5c5aef50 R11: 0000000000000246 R12: 00005649547e3f70
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
task:kworker/1:3     state:R  running task     stack:22848 pid:5897  tgid:5897  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_power_efficient gc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5260 [inline]
 __schedule+0x14ea/0x5050 kernel/sched/core.c:6867
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7194
 irqentry_exit+0x597/0x620 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:seqcount_lockdep_reader_access+0xed/0x100 include/linux/seqlock.h:75
Code: 00 75 11 e8 95 8e 0e f8 4d 85 f6 75 16 e8 8b 8e 0e f8 eb 15 e8 84 8e 0e f8 e8 4f 16 e1 01 4d 85 f6 74 ea e8 75 8e 0e f8 fb 5b <41> 5e e9 27 58 5a f7 cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90
RSP: 0018:ffffc9000419f910 EFLAGS: 00000293
RAX: ffffffff89b5e8db RBX: 0000000000000001 RCX: ffff888025e63d00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000419fa70 R08: ffffffff8fef1a77 R09: 1ffffffff1fde34e
R10: dffffc0000000000 R11: fffffbfff1fde34f R12: dffffc0000000000
R13: ffff888059a11418 R14: 0000000000000200 R15: 000000000000ff50
 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:342 [inline]
 gc_worker+0x304/0x1290 net/netfilter/nf_conntrack_core.c:1548
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
 worker_thread+0xda6/0x1360 kernel/workqueue.c:3421
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
rcu: rcu_preempt kthread starved for 10557 jiffies! g18257 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:27816 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5260 [inline]
 __schedule+0x14ea/0x5050 kernel/sched/core.c:6867
 __schedule_loop kernel/sched/core.c:6949 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:6964
 schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x312/0x1560 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:2285
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6607 Comm: syz.3.44 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:native_apic_msr_eoi+0xf/0x20 arch/x86/include/asm/apic.h:218
Code: f8 e9 40 34 9c ff cc 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa b9 0b 08 00 00 31 c0 31 d2 0f 30 <e9> 17 34 9c ff cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc90000a08fc8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffc90003377cd8 RCX: 000000000000080b
RDX: 0000000000000000 RSI: ffffffff8ba8e0a0 RDI: ffffffff8c073980
RBP: 0000000000000000 R08: ffffffff8fef1a77 R09: 1ffffffff1fde34e
R10: dffffc0000000000 R11: ffffc90000a08ff8 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd66ff016c0(0000) GS:ffff8881257f5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005649547e1950 CR3: 000000004fdaa000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 apic_eoi arch/x86/include/asm/apic.h:414 [inline]
 __sysvec_apic_timer_interrupt+0x45/0x3d0 arch/x86/kernel/apic/apic.c:1060
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:rseq_signal_deliver include/linux/rseq.h:35 [inline]
RIP: 0010:setup_rt_frame arch/x86/kernel/signal.c:239 [inline]
RIP: 0010:handle_signal arch/x86/kernel/signal.c:294 [inline]
RIP: 0010:arch_do_signal_or_restart+0x349/0x830 arch/x86/kernel/signal.c:339
Code: 00 e8 2b 2e 5d 00 4c 89 f7 e8 83 d5 04 00 48 bb 00 00 00 00 00 fc ff df 49 8d be c4 15 00 00 48 89 f8 48 c1 e8 03 0f b6 04 18 <84> c0 0f 85 49 04 00 00 45 0f b6 be c4 15 00 00 49 81 c6 c2 15 00
RSP: 0018:ffffc90003377d80 EFLAGS: 00000217
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888020be9e80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888020beb444
RBP: ffffc90003377e90 R08: ffff888020be9e87 R09: 1ffff1100417d3d0
R10: dffffc0000000000 R11: ffffed100417d3d1 R12: 0000000000000000
R13: 1ffff9200066efb4 R14: ffff888020be9e80 R15: 0000000000000000
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd66ef9aef9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd66ff010e8 EFLAGS: 00000246
RAX: fffffffffffffffc RBX: 00007fd66f205fa8 RCX: 00007fd66ef9aef9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd66f205fa8
RBP: 00007fd66f205fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd66f206038 R14: 00007ffe8511c7e0 R15: 00007ffe8511c8c8
 </TASK>