vkms_vblank_simulate: vblank timer overrun
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=30002 jiffies, g=37561, q=540102 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 30002 (4295078104-4295048102), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 30002 jiffies! g37561 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:0     pid:17    tgid:17    ppid:2      flags:0x00000008
Call trace:
 __switch_to+0xf0/0x150 arch/arm64/kernel/process.c:606
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x330/0x8fc kernel/sched/core.c:6693
 __schedule_loop kernel/sched/core.c:6770 [inline]
 schedule+0x34/0x104 kernel/sched/core.c:6785
 schedule_timeout+0x80/0xf4 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x138/0x48c kernel/rcu/tree.c:2045
 rcu_gp_kthread+0x130/0x15c kernel/rcu/tree.c:2247
 kthread+0x114/0x118 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0
Hardware name: linux,dummy-virt (DT)
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : stackdepot_memcmp lib/stackdepot.c:527 [inline]
pc : find_stack+0x84/0x134 lib/stackdepot.c:561
lr : stack_depot_save_flags+0x184/0x5c4 lib/stackdepot.c:618
sp : ffff800082b8b430
x29: ffff800082b8b430 x28: fcf0000004c5ace0 x27: ffff800082a1d3a8
x26: fff000007a400000 x25: fff000007adb3420 x24: 00000000009b3420
x23: 000000004a09b342 x22: 0000000000000019 x21: 0000000000000000
x20: ffff800082b8b4f0 x19: f4f000000308c880 x18: 0000000000000001
x17: fcf000000931ee60 x16: 0000000000000017 x15: fdf000000d431840
x14: 0000000000000004 x13: 0000000000000021 x12: 0000000000004788
x11: fdf000000d431b10 x10: fdf000000d431810 x9 : f4f000000308c8a0
x8 : 00000000000000c8 x7 : ffff800081575cd8 x6 : ffff800081575cd8
x5 : 0000000000000038 x4 : 0000000000000003 x3 : 000000004a09b342
x2 : 0000000000000019 x1 : ffff800082b8b4f0 x0 : fff000007adb3420
Call trace:
 stackdepot_memcmp lib/stackdepot.c:528 [inline]
 find_stack+0x84/0x134 lib/stackdepot.c:561
 stack_depot_save_flags+0x184/0x5c4 lib/stackdepot.c:618
 kasan_save_stack+0x50/0x64 mm/kasan/common.c:48
 save_stack_info+0x40/0x158 mm/kasan/tags.c:106
 kasan_save_free_info+0x18/0x24 mm/kasan/tags.c:147
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x74/0x8c mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:2342 [inline]
 slab_free mm/slub.c:4579 [inline]
 kmem_cache_free+0x100/0x39c mm/slub.c:4681
 kfree_skbmem+0xa0/0xd0 net/core/skbuff.c:1148
 __kfree_skb net/core/skbuff.c:1205 [inline]
 sk_skb_reason_drop+0x9c/0xcc net/core/skbuff.c:1242
 kfree_skb_reason include/linux/skbuff.h:1262 [inline]
 kfree_skb include/linux/skbuff.h:1271 [inline]
 consume_skb include/linux/skbuff.h:1290 [inline]
 nft_synproxy_eval_v6 net/netfilter/nft_synproxy.c:97 [inline]
 nft_synproxy_do_eval+0x178/0x270 net/netfilter/nft_synproxy.c:145
 nft_synproxy_eval+0x14/0x38 net/netfilter/nft_synproxy.c:247
 expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
 nft_do_chain+0x108/0x484 net/netfilter/nf_tables_core.c:288
 nft_do_chain_inet+0xa0/0x114 net/netfilter/nft_chain_filter.c:161
 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
 nf_hook_slow+0x48/0x118 net/netfilter/core.c:626
 nf_hook include/linux/netfilter.h:269 [inline]
 NF_HOOK include/linux/netfilter.h:312 [inline]
 ip_local_deliver+0xec/0x120 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:460 [inline]
 ip_rcv_finish+0x90/0xb0 net/ipv4/ip_input.c:449
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_rcv+0xec/0xf8 net/ipv4/ip_input.c:569
 __netif_receive_skb_one_core+0x58/0x84 net/core/dev.c:5670
 __netif_receive_skb+0x18/0x60 net/core/dev.c:5783
 process_backlog+0x84/0x13c net/core/dev.c:6115
 __napi_poll+0x38/0x198 net/core/dev.c:6779
 napi_poll net/core/dev.c:6848 [inline]
 net_rx_action+0x344/0x3c8 net/core/dev.c:6970
 handle_softirqs+0x108/0x240 kernel/softirq.c:554
 run_ksoftirqd kernel/softirq.c:927 [inline]
 run_ksoftirqd+0x3c/0x4c kernel/softirq.c:919
 smpboot_thread_fn+0x208/0x22c kernel/smpboot.c:164
 kthread+0x114/0x118 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860