rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: (detected by 0, t=10502 jiffies, g=31661, q=1983358 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 5383 (4294977558-4294972175), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 5385 jiffies! g31661 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:25888 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6997
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:__free_object+0x9ae/0xa80 lib/debugobjects.c:415
Code: 84 24 80 00 00 00 42 80 3c 2b 00 74 08 4c 89 f7 e8 87 10 3c fd f6 84 24 81 00 00 00 02 75 5e f7 44 24 10 00 02 00 00 74 01 fb <48> c7 44 24 60 0e 36 e0 45 48 8b 44 24 40 49 c7 44 05 00 00 00 00
RSP: 0018:ffffc900001678c0 EFLAGS: 00000206
RAX: 894390dd341ed000 RBX: 1ffff9200002cf2c RCX: ffffffff9a3c5903
RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: ffffffff8c6100e0
RBP: ffffc90000167a90 R08: ffffffff901cf8af R09: 1ffffffff2039f15
R10: dffffc0000000000 R11: fffffbfff2039f16 R12: ffff8880b873a748
R13: dffffc0000000000 R14: ffffc90000167960 R15: ffff8880b873a740
free_object lib/debugobjects.c:423 [inline]
debug_object_free+0x3a6/0x460 lib/debugobjects.c:866
destroy_timer_on_stack kernel/time/timer.c:866 [inline]
schedule_timeout+0x1d7/0x310 kernel/time/timer.c:2619
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
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 5234 Comm: kworker/0:3 Not tainted 6.11.0-syzkaller-11503-gc824deb1a897 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:rol32 include/linux/bitops.h:127 [inline]
RIP: 0010:jhash2 include/linux/jhash.h:129 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:514 [inline]
RIP: 0010:stack_depot_save_flags+0xb3/0x830 lib/stackdepot.c:614
Code: 31 dd 44 01 f7 89 e9 c1 c1 08 41 29 ee 44 31 f1 01 fd 29 cf 89 c8 c1 c0 10 31 f8 01 e9 89 c3 c1 c3 13 29 c5 31 eb 01 c8 29 d9 <41> 89 de 41 c1 c6 04 41 31 ce 01 c3 83 c6 fd 48 83 c2 0c 83 fe 03
RSP: 0018:ffffc90000006db0 EFLAGS: 00000a93
RAX: 0000000088c86248 RBX: 0000000099ed1c0a RCX: 0000000092056d5b
RDX: ffffc90000006e1c RSI: 0000000000000031 RDI: 00000000e90ba8c7
RBP: 000000005ef7faa4 R08: ffffc90000006e10 R09: 000000000000001a
R10: ffffc90000006cd0 R11: ffffffff81806870 R12: ffff88801ac41dc0
R13: ffff8882012a5800 R14: 00000000ed5057bc R15: ffffc90000006e10
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555594862808 CR3: 000000006d2dc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kasan_save_stack mm/kasan/common.c:48 [inline]
kasan_save_track+0x51/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:2343 [inline]
slab_free mm/slub.c:4580 [inline]
kfree+0x1a0/0x440 mm/slub.c:4728
skb_kfree_head net/core/skbuff.c:1086 [inline]
skb_free_head net/core/skbuff.c:1098 [inline]
skb_release_data+0x6a0/0x8a0 net/core/skbuff.c:1125
skb_release_all net/core/skbuff.c:1190 [inline]
__kfree_skb net/core/skbuff.c:1204 [inline]
consume_skb+0x9f/0xf0 net/core/skbuff.c:1436
nft_synproxy_eval_v4+0x3d2/0x610 net/netfilter/nft_synproxy.c:60
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:5662 [inline]
__netif_receive_skb+0x2bf/0x650 net/core/dev.c:5775
process_backlog+0x662/0x15b0 net/core/dev.c:6107
__napi_poll+0xcb/0x490 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+0x2c5/0x980 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
neigh_periodic_work+0xb35/0xd50 net/core/neighbour.c:1019
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