rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5974/2:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=10173, q=757159 ncpus=2)
task:syz.0.175       state:R  running task     stack:24216 pid:5974  tgid:5973  ppid:5241   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x1895/0x4b30 kernel/sched/core.c:6682
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7004
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_release+0x658/0xa30 kernel/locking/lockdep.c:5850
Code: 3c 3b 00 74 08 4c 89 f7 e8 85 14 8e 00 f6 84 24 91 00 00 00 02 75 77 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90016837420 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92002d06e96 RCX: ffffc90016837403
RDX: 0000000000000002 RSI: ffffffff8c0adc40 RDI: ffffffff8c60fb20
RBP: ffffc90016837558 R08: ffffffff901d11af R09: 1ffffffff203a235
R10: dffffc0000000000 R11: fffffbfff203a236 R12: 1ffff92002d06e90
R13: 0000000000000246 R14: ffffc900168374b0 R15: dffffc0000000000
 rcu_lock_release include/linux/rcupdate.h:347 [inline]
 rcu_read_unlock include/linux/rcupdate.h:880 [inline]
 is_bpf_text_address+0x280/0x2a0 kernel/bpf/core.c:769
 kernel_text_address+0xa7/0xe0 kernel/extable.c:125
 __kernel_text_address+0xd/0x40 kernel/extable.c:79
 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369
 arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 save_stack+0xfb/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x76/0x430 mm/page_owner.c:297
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1108 [inline]
 free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
 vfree+0x186/0x2e0 mm/vmalloc.c:3361
 __vmalloc_area_node mm/vmalloc.c:3711 [inline]
 __vmalloc_node_range_noprof+0x1119/0x13f0 mm/vmalloc.c:3828
 vmalloc_user_noprof+0x74/0x80 mm/vmalloc.c:3982
 xskq_create+0xb6/0x170 net/xdp/xsk_queue.c:49
 xsk_init_queue+0xa1/0x100 net/xdp/xsk.c:1017
 xsk_setsockopt+0x598/0x950 net/xdp/xsk.c:1351
 do_sock_setsockopt+0x3af/0x720 net/socket.c:2334
 __sys_setsockopt+0x1a2/0x250 net/socket.c:2357
 __do_sys_setsockopt net/socket.c:2366 [inline]
 __se_sys_setsockopt net/socket.c:2363 [inline]
 __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2363
 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: 0033:0x7f7beff7e719
RSP: 002b:00007f7bf0ce8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f7bf0135f80 RCX: 00007f7beff7e719
RDX: 0000000000000003 RSI: 000000000000011b RDI: 0000000000000004
RBP: 00007f7befff132e R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020001780 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7bf0135f80 R15: 00007fff8e496828
 </TASK>
rcu: rcu_preempt kthread starved for 10309 jiffies! g10173 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:25552 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5322 [inline]
 __schedule+0x1895/0x4b30 kernel/sched/core.c:6682
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6774
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1330 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: 5242 Comm: kworker/1:3 Not tainted 6.12.0-rc2-syzkaller-00631-g6d858708d465 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:849 [inline]
RIP: 0010:__ip_vs_conn_in_get+0xbb/0xc60 net/netfilter/ipvs/ip_vs_conn.c:270
Code: 41 89 c6 e8 07 ad 65 f7 48 8d 05 00 00 00 00 48 c7 c7 e0 7d 93 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 48 89 44 24 30 <50> e8 df 4a 5a f7 48 83 c4 08 e8 16 e3 b0 01 89 c3 31 ff 89 c6 e8
RSP: 0000:ffffc90000a179a0 EFLAGS: 00000246
RAX: ffffffff8a160b00 RBX: ffffc90000a17b90 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e937de0
RBP: ffffc90000a17ab0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90000a17bb0 R11: fffff52000142f78 R12: dffffc0000000000
R13: ffffc90000a17d64 R14: 0000000000000bb6 R15: ffffc90000a17b90
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1397422998 CR3: 000000000e734000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 ip_vs_conn_in_get net/netfilter/ipvs/ip_vs_conn.c:297 [inline]
 ip_vs_conn_in_get_proto+0x351/0x690 net/netfilter/ipvs/ip_vs_conn.c:344
 ip_vs_in_hook+0x6d1/0x2230 net/netfilter/ipvs/ip_vs_core.c:1994
 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
 nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
 nf_hook+0x2c4/0x450 include/linux/netfilter.h:269
 __ip_local_out+0x3d9/0x4e0 net/ipv4/ip_output.c:119
 ip_local_out+0x26/0x70 net/ipv4/ip_output.c:128
 synproxy_send_client_synack+0x8b8/0xf30 net/netfilter/nf_synproxy_core.c:484
 nft_synproxy_eval_v4+0x3ca/0x610 net/netfilter/nft_synproxy.c:59
 nft_synproxy_do_eval+0x362/0xa60 net/netfilter/nft_synproxy.c:141
 expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
 nft_do_chain+0x4ad/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+0xc3/0x220 net/netfilter/core.c:626
 nf_hook include/linux/netfilter.h:269 [inline]
 NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
 __netif_receive_skb_one_core net/core/dev.c:5668 [inline]
 __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5781
 process_backlog+0x662/0x15b0 net/core/dev.c:6113
 __napi_poll+0xcb/0x490 net/core/dev.c:6834
 napi_poll net/core/dev.c:6903 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:7025
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 do_softirq+0x11b/0x1e0 kernel/softirq.c:455
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
 nsim_dev_trap_report_work+0x75d/0xaa0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 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>
Dead loop on virtual device ipvlan0, fix it urgently!