rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5990/3:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=13993, q=1815062 ncpus=2)
task:dhcpcd-run-hook state:R  running task     stack:23272 pid:5990  tgid:5990  ppid:4766   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x1843/0x4ac0 kernel/sched/core.c:6675
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6854
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6878
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 filemap_map_pages+0x1759/0x20c0 mm/filemap.c:3684
 do_fault_around mm/memory.c:5240 [inline]
 do_read_fault mm/memory.c:5273 [inline]
 do_fault mm/memory.c:5416 [inline]
 do_pte_missing+0x1bec/0x4500 mm/memory.c:3965
 handle_pte_fault mm/memory.c:5751 [inline]
 __handle_mm_fault mm/memory.c:5894 [inline]
 handle_mm_fault+0x1efd/0x3cf0 mm/memory.c:6062
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x408/0x810 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f67b2976b2b
RSP: 002b:00007ffcf0811a98 EFLAGS: 00010283
RAX: 00000000ffffff07 RBX: 00007ffcf0811be8 RCX: 0000000000000388
RDX: 0000000000000000 RSI: 00007f67b2aac388 RDI: 00007ffcf0811e87
RBP: 0000559cec0cd000 R08: 00007f67b2a04d30 R09: 00007f67b2ae1b5d
R10: 000000000000004f R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffcf0811c00 R14: 0000559cec0cc169 R15: 00007f67b2b0ba80
 </TASK>
rcu: rcu_preempt kthread starved for 10528 jiffies! g13993 f0x2 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:25160 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x1843/0x4ac0 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6767
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1320 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 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>
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: 23 Comm: ksoftirqd/1 Not tainted 6.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:from32to16 lib/checksum.c:40 [inline]
RIP: 0010:do_csum lib/checksum.c:93 [inline]
RIP: 0010:ip_fast_csum+0x210/0x2b0 lib/checksum.c:108
Code: f6 c4 01 75 07 e8 80 9c ec fc eb 1b e8 79 9c ec fc 4c 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 51 41 0f b6 07 01 c3 0f b7 c3 <c1> eb 10 01 c3 89 d9 c1 e9 10 01 d9 89 c8 66 c1 c0 08 48 85 ed 0f
RSP: 0018:ffffc900001d7640 EFLAGS: 00000246
RAX: 000000000000ffff RBX: 000000000000ffff RCX: ffff88801ee45a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff84a5dfa5 R09: 1ffff110409cf444
R10: dffffc0000000000 R11: ffffed10409cf445 R12: 0000000000000014
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888207eef954
FS:  0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f67b2aac388 CR3: 000000007749a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 ip_rcv_core+0x415/0xdb0 net/ipv4/ip_input.c:511
 ip_rcv+0x4f/0x90 net/ipv4/ip_input.c:565
 __netif_receive_skb_one_core net/core/dev.c:5662 [inline]
 __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5775
 process_backlog+0x660/0x1590 net/core/dev.c:6107
 __napi_poll+0xcb/0x480 net/core/dev.c:6771
 napi_poll net/core/dev.c:6840 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:6962
 handle_softirqs+0x2c5/0x960 kernel/softirq.c:554
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:927
 smpboot_thread_fn+0x544/0xa20 kernel/smpboot.c:164
 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>