rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=90157, q=1143893 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295100592-4295090090), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g90157 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:25328 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/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: 5198 Comm: udevd Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
RIP: 0010:lock_is_held_type+0x10e/0x190 kernel/locking/lockdep.c:5922
Code: 95 c0 31 db 44 39 f0 0f 94 c3 eb 05 bb 01 00 00 00 48 c7 c7 e0 aa 0a 8c e8 7f 1a 00 00 b8 ff ff ff ff 65 0f c1 05 e2 bb 39 74 <83> f8 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02
RSP: 0018:ffffc90000a17d18 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000101
RDX: ffff88807beada00 RSI: ffffffff8c0aaae0 RDI: ffffffff8c5fb0e0
RBP: 0000000000000000 R08: ffffffff8a6815b7 R09: 1ffffffff2854910
R10: dffffc0000000000 R11: fffffbfff2854911 R12: 0000000000000246
R13: ffff88807beada00 R14: 00000000ffffffff R15: ffffffff8e937ae0
FS:  00007fcc546b0c80(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32b1aff8 CR3: 000000007b23c000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 nf_hook+0x180/0x450 include/linux/netfilter.h:241
 NF_HOOK_COND include/linux/netfilter.h:302 [inline]
 ip6_output+0x26f/0x3c0 net/ipv6/ip6_output.c:247
 synproxy_send_tcp_ipv6+0x568/0x7c0 net/netfilter/nf_synproxy_core.c:851
 synproxy_send_client_synack_ipv6+0x827/0xcc0 net/netfilter/nf_synproxy_core.c:897
 nft_synproxy_eval_v6 net/netfilter/nft_synproxy.c:90 [inline]
 nft_synproxy_do_eval+0x739/0xa60 net/netfilter/nft_synproxy.c:145
 expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
 nft_do_chain+0x4af/0x1da0 net/netfilter/nf_tables_core.c:288
 nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161
 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
 nf_hook_slow+0xc5/0x220 net/netfilter/core.c:626
 nf_hook include/linux/netfilter.h:269 [inline]
 NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
 NF_HOOK+0x3a6/0x450 include/linux/netfilter.h:314
 __netif_receive_skb_one_core net/core/dev.c:5674 [inline]
 __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5787
 process_backlog+0x662/0x15b0 net/core/dev.c:6119
 __napi_poll+0xcd/0x490 net/core/dev.c:6885
 napi_poll net/core/dev.c:6954 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:7076
 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2061 [inline]
RIP: 0010:vprintk_emit+0x700/0xa10 kernel/printk/printk.c:2431
Code: 00 e8 d4 f3 20 00 4c 8d bc 24 a0 00 00 00 4d 85 e4 75 07 e8 c2 f3 20 00 eb 06 e8 bb f3 20 00 fb 49 bc 00 00 00 00 00 fc ff df <48> c7 c7 a0 34 81 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00
RSP: 0018:ffffc9000481f7e0 EFLAGS: 00000293
RAX: ffffffff817e9065 RBX: 0000000000000000 RCX: ffff88807beada00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000481f8f0 R08: ffffffff817e903e R09: 1ffffffff2033026
R10: dffffc0000000000 R11: fffffbfff2033027 R12: dffffc0000000000
R13: 1ffff92000903f00 R14: ffffffff817e8ea0 R15: ffffc9000481f880
 devkmsg_emit+0xda/0x120 kernel/printk/printk.c:755
 devkmsg_write+0x31d/0x3e0 kernel/printk/printk.c:818
 do_iter_readv_writev+0x602/0x880
 vfs_writev+0x376/0xba0 fs/read_write.c:1050
 do_writev+0x1b6/0x360 fs/read_write.c:1096
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc5431ae03
Code: 89 c7 48 89 44 24 08 e8 6a f2 f9 ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 14 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6d 48 8b 15 f6 5f 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffe5680e9d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcc5431ae03
RDX: 0000000000000005 RSI: 00007ffe5680ea40 RDI: 0000000000000005
RBP: 00007ffe5680ea40 R08: 00007ffe5680eab7 R09: 00007ffe5680e358
R10: 0000000000000002 R11: 0000000000000246 R12: 000000000000001c
R13: 00007ffe5680eb68 R14: 0000000000000000 R15: 00007ffe5680eac8
 </TASK>