rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (3 ticks this GP) idle=117c/1/0x4000000000000000 softirq=21028/21028 fqs=0
rcu: 	(t=13355 jiffies g=15589 q=518 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 13354 jiffies! g15589 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=7216
rcu: rcu_preempt kthread starved for 13355 jiffies! g15589 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:25200 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5373 [inline]
 __schedule+0x186c/0x4be0 kernel/sched/core.c:6760
 __schedule_loop kernel/sched/core.c:6837 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6852
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5939 Comm: kworker/0:4 Not tainted 6.13.0-syzkaller-04145-gdfffaccffc53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_power_efficient gc_worker
RIP: 0010:match_held_lock+0x0/0xb0 kernel/locking/lockdep.c:5296
Code: 48 83 c4 10 5b 41 5e 41 5f c3 cc cc cc cc e8 07 f9 ff ff 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 53 bd 01 00 00 00 48 39 77 10 74 67 48 89 fb 81 7f 20 00 00 20
RSP: 0018:ffffc900000079f8 EFLAGS: 00000083
RAX: 0000000000000005 RBX: 0000000000000004 RCX: ffffc90000007a03
RDX: 1ffff92000000f50 RSI: ffffffff9a673b88 RDI: ffff888027ad8b80
RBP: ffffc90000007b30 R08: ffffffff901ba5f7 R09: 1ffffffff20374be
R10: dffffc0000000000 R11: fffffbfff20374bf R12: 0000000000000014
R13: 0000000000000004 R14: ffff888027ad8b80 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b45d7ef98 CR3: 0000000063ac8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 find_held_lock kernel/locking/lockdep.c:5341 [inline]
 __lock_release kernel/locking/lockdep.c:5526 [inline]
 lock_release+0x285/0xa30 kernel/locking/lockdep.c:5872
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194
 debug_object_activate+0x3f7/0x580 lib/debugobjects.c:836
 debug_hrtimer_activate kernel/time/hrtimer.c:428 [inline]
 debug_activate kernel/time/hrtimer.c:469 [inline]
 enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1075
 __run_hrtimer kernel/time/hrtimer.c:1755 [inline]
 __hrtimer_run_queues+0x6cb/0xd30 kernel/time/hrtimer.c:1802
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1864
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 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:seqcount_lockdep_reader_access+0x1e0/0x220 include/linux/seqlock.h:75
Code: f7 4d 85 ed 75 16 e8 af dc b7 f7 eb 15 e8 a8 dc b7 f7 e8 83 7e ec 01 4d 85 ed 74 ea e8 99 dc b7 f7 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 66 43 c7 44 3c 09 00 00 43 c6 44 3c 0b 00
RSP: 0018:ffffc90003207900 EFLAGS: 00000293
RAX: ffffffff89e79f27 RBX: 0000000000000000 RCX: ffff888027ad8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900032079b0 R08: ffffffff89e79efd R09: 1ffffffff285eb1c
R10: dffffc0000000000 R11: fffffbfff285eb1d R12: dffffc0000000000
R13: 0000000000000200 R14: 0000000000000046 R15: 1ffff92000640f20
 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:333 [inline]
 gc_worker+0x316/0x1400 net/netfilter/nf_conntrack_core.c:1534
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
CPU: 1 UID: 0 PID: 5869 Comm: kworker/1:3 Not tainted 6.13.0-syzkaller-04145-gdfffaccffc53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker
RIP: 0010:__phys_addr+0x6/0x170 arch/x86/mm/physaddr.c:16
Code: 9b 00 90 0f 0b e8 ca c7 86 0a 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 <41> 56 53 49 89 fe e8 df 26 52 00 48 bf ff ff ff 7f ff ff ff ff 4c
RSP: 0018:ffffc90003f5f7c8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8993fa37 RCX: ffff88802ffada00
RDX: 0000000000000000 RSI: ffffffff8c601480 RDI: ffff888031f84600
RBP: ffff888031f84740 R08: ffffffff8993f9fd R09: 1ffff110065fe628
R10: dffffc0000000000 R11: ffffed10065fe629 R12: ffff88803311157e
R13: ffff888031f84600 R14: ffff888141eaaa00 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c007d74000 CR3: 00000000123c8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 virt_to_folio include/linux/mm.h:1295 [inline]
 virt_to_slab mm/slab.h:211 [inline]
 kmem_cache_free+0x78/0x410 mm/slub.c:4715
 skb_kfree_head net/core/skbuff.c:1084 [inline]
 skb_free_head net/core/skbuff.c:1098 [inline]
 skb_release_data+0x677/0x8a0 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
 wg_packet_handshake_receive_worker+0x7c6/0xf50 drivers/net/wireguard/receive.c:214
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>