rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P15556/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=112017, q=676448 ncpus=2)
task:dhcpcd-run-hook state:R  running task     stack:23072 pid:15556 tgid:15556 ppid:5506   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6690
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7012
 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:page_ext_get+0x27c/0x2a0 mm/page_ext.c:533
Code: 03 00 00 48 c7 c2 e0 79 18 8c e8 7f 3a 65 ff 48 c7 c7 a0 7d 93 8e 4c 89 f6 e8 c0 fa 64 ff e8 7b 36 70 ff 45 31 ff 4c 89 f8 5b <41> 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 63 66 89 ff e9 dc fe ff ff
RSP: 0018:ffffc90003fb7538 EFLAGS: 00000293
RAX: ffff88801ccda980 RBX: ffffea0000eaee00 RCX: ffff88802ad8bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000000e0 R08: ffffffff820b732a R09: 1ffffffff2859b00
R10: dffffc0000000000 R11: fffffbfff2859b01 R12: 000000000125a980
R13: ffffea0000eaee08 R14: ffffffff820b7190 R15: ffff88801ccda980
 __reset_page_owner+0x30/0x430 mm/page_owner.c:290
 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
 discard_slab mm/slub.c:2677 [inline]
 __put_partials+0xeb/0x130 mm/slub.c:3145
 put_cpu_partial+0x17c/0x250 mm/slub.c:3220
 __slab_free+0x2ea/0x3d0 mm/slub.c:4449
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:247 [inline]
 slab_post_alloc_hook mm/slub.c:4085 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141
 vma_lock_alloc kernel/fork.c:447 [inline]
 vm_area_dup+0x61/0x290 kernel/fork.c:500
 dup_mmap kernel/fork.c:692 [inline]
 dup_mm kernel/fork.c:1675 [inline]
 copy_mm+0xb61/0x1e80 kernel/fork.c:1724
 copy_process+0x1845/0x3d50 kernel/fork.c:2374
 kernel_clone+0x226/0x8f0 kernel/fork.c:2786
 __do_sys_clone kernel/fork.c:2929 [inline]
 __se_sys_clone kernel/fork.c:2913 [inline]
 __x64_sys_clone+0x258/0x2a0 kernel/fork.c:2913
 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: 0033:0x7f02cdcc4a12
RSP: 002b:00007fffc9c0cb18 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f02cdcc4a12
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 000056456666db70 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f02cdb8a650 R11: 0000000000000246 R12: 0000000000000084
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000024
 </TASK>
rcu: rcu_preempt kthread starved for 278 jiffies! g112017 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:24176 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6782
 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:
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-rc6-syzkaller-00005-g557329bcecc2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:raw_atomic_fetch_sub_release include/linux/atomic/atomic-arch-fallback.h:949 [inline]
RIP: 0010:atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:401 [inline]
RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:264 [inline]
RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:307 [inline]
RIP: 0010:refcount_dec_and_test include/linux/refcount.h:325 [inline]
RIP: 0010:skb_unref include/linux/skbuff.h:1232 [inline]
RIP: 0010:consume_skb+0x3a/0xf0 net/core/skbuff.c:1432
Code: 48 85 db 0f 84 b0 00 00 00 4c 8d b3 e4 00 00 00 4c 89 f7 be 04 00 00 00 e8 73 d6 72 f8 bd ff ff ff ff f0 0f c1 ab e4 00 00 00 <bf> 01 00 00 00 89 ee e8 fa 11 09 f8 83 fd 01 75 60 48 8b 74 24 18
RSP: 0018:ffffc900001e6fe0 EFLAGS: 00000257
RAX: ffffffff898bcc01 RBX: ffff88808b77c000 RCX: ffffffff898bcc8d
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88808b77c0e4
RBP: 0000000000000001 R08: ffff88808b77c0e7 R09: 1ffff110116ef81c
R10: dffffc0000000000 R11: ffffed10116ef81d R12: ffffc900001e7200
R13: dffffc0000000000 R14: ffff88808b77c0e4 R15: 1ffff9200003ce0e
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558cc8e5c8 CR3: 000000005e928000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: fffffffffffffffc DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 nft_synproxy_do_eval+0x746/0xa60 net/netfilter/nft_synproxy.c:145
 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:5670 [inline]
 __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5783
 process_backlog+0x662/0x15b0 net/core/dev.c:6115
 __napi_poll+0xcb/0x490 net/core/dev.c:6779
 napi_poll net/core/dev.c:6848 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:6970
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:927
 smpboot_thread_fn+0x544/0xa30 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>
warn_alloc: 1 callbacks suppressed
ksoftirqd/1: page allocation failure: order:0, mode:0x40820(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
,cpuset=/
,mems_allowed=0-1
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-rc6-syzkaller-00005-g557329bcecc2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 warn_alloc+0x278/0x410 mm/page_alloc.c:3531
 __alloc_pages_slowpath+0xf37/0x1020 mm/page_alloc.c:4465
 __alloc_pages_noprof+0x493/0x710 mm/page_alloc.c:4746
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 alloc_slab_page+0x6a/0x140 mm/slub.c:2412
 allocate_slab+0x1c0/0x2f0 mm/slub.c:2586
 new_slab mm/slub.c:2631 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818
 __slab_alloc+0x58/0xa0 mm/slub.c:3908
 __slab_alloc_node mm/slub.c:3961 [inline]
 slab_alloc_node mm/slub.c:4122 [inline]
 kmem_cache_alloc_node_noprof+0x1fe/0x320 mm/slub.c:4186
 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:668
 alloc_skb include/linux/skbuff.h:1322 [inline]
 synproxy_send_client_synack_ipv6+0x1ba/0xc30 net/netfilter/nf_synproxy_core.c:873
 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+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:5670 [inline]
 __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5783
 process_backlog+0x662/0x15b0 net/core/dev.c:6115
 __napi_poll+0xcb/0x490 net/core/dev.c:6779
 napi_poll net/core/dev.c:6848 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:6970
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:927
 smpboot_thread_fn+0x544/0xa30 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>
Mem-Info:
active_anon:5816 inactive_anon:0 isolated_anon:0
 active_file:18021 inactive_file:37778 isolated_file:0
 unevictable:768 dirty:31 writeback:154
 slab_reclaimable:10073 slab_unreclaimable:1386097
 mapped:18946 shmem:1425 pagetables:718
 sec_pagetables:0 bounce:0
 kernel_misc_reclaimable:0
 free:9931 free_pcp:5741 free_cma:0
Node 0 active_anon:23264kB inactive_anon:0kB active_file:72032kB inactive_file:151036kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:75752kB dirty:116kB writeback:616kB shmem:4164kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:0kB writeback_tmp:0kB kernel_stack:11376kB pagetables:2872kB sec_pagetables:0kB all_unreclaimable? no
Node 1 active_anon:0kB inactive_anon:0kB active_file:52kB inactive_file:76kB unevictable:1536kB isolated(anon):0kB isolated(file):0kB mapped:32kB dirty:8kB writeback:0kB shmem:1536kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:0kB writeback_tmp:0kB kernel_stack:16kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
Node 0 DMA free:9932kB boost:0kB min:208kB low:260kB high:312kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:40kB local_pcp:28kB free_cma:0kB
lowmem_reserve[]: 0 2463 2464 0 0
Node 0 DMA32 free:9912kB boost:76908kB min:111092kB low:119636kB high:128180kB reserved_highatomic:12288KB active_anon:23224kB inactive_anon:0kB active_file:72032kB inactive_file:150456kB unevictable:1536kB writepending:832kB present:3129332kB managed:2550456kB mlocked:0kB bounce:0kB free_pcp:11640kB local_pcp:3480kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 Normal free:0kB boost:0kB min:8kB low:8kB high:8kB reserved_highatomic:0KB active_anon:40kB inactive_anon:0kB active_file:0kB inactive_file:580kB unevictable:0kB writepending:0kB present:1048580kB managed:620kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 1 Normal free:19880kB boost:0kB min:55708kB low:69632kB high:83556kB reserved_highatomic:28672KB active_anon:0kB inactive_anon:0kB active_file:52kB inactive_file:76kB unevictable:1536kB writepending:8kB present:4194300kB managed:4111164kB mlocked:0kB bounce:0kB free_pcp:11284kB local_pcp:8140kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0 0
Node 0 DMA: 0*4kB 1*8kB (U) 0*16kB 0*32kB 1*64kB (U) 1*128kB (U) 0*256kB 1*512kB 
(U) 1*1024kB (U) 2*2048kB (UM) 1*4096kB (M) = 9928kB
Node 0 DMA32: 3105*4kB (UMEH) 1388*8kB (UMH) 83*16kB (UMH) 439*32kB (UMH) 119*64kB (UMH) 79*128kB (UH) 34*256kB (UH) 29*512kB (UH) 11*1024kB (U) 1*2048kB (U) 0*4096kB = 93492kB
Node 0 Normal: 1*4kB (U) 1*8kB (U) 1*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 28kB
Node 1 Normal: 5*4kB (ME) 10*8kB (UME) 15*16kB (UMEH) 18*32kB (UMEH) 13*64kB (UMEH) 16*128kB (UMEH) 11*256kB (UMH) 6*512kB (UMH) 10*1024kB (UMEH) 1*2048kB (E) 0*4096kB = 21972kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 1 hugepages_total=2 hugepages_free=2 hugepages_surp=0 hugepages_size=2048kB
57174 total pagecache pages
0 pages in swap cache
Free swap  = 124560kB
Total swap = 124996kB
2097051 pages RAM
0 pages HighMem/MovableOnly
427651 pages reserved
0 pages cma reserved