rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=86357, q=34 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295092518-4295082016), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g86357 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:27920 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6875
 irqentry_exit+0x63/0x70 kernel/entry/common.c:442
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__free_object+0x96e/0xa60 arch/x86/include/asm/irqflags.h:-1
Code: 00 00 00 00 9c 8f 84 24 a0 00 00 00 f7 84 24 a0 00 00 00 00 02 00 00 42 c6 44 28 08 f8 75 7b f7 44 24 20 00 02 00 00 74 01 fb <48> 8b 44 24 30 48 b9 f8 f8 f8 f8 f8 f8 f8 f8 4a 89 4c 28 10 4a 89
RSP: 0018:ffffc90000157980 EFLAGS: 00000206
RAX: 1ffff9200002af3c RBX: ffff8880278a19a8 RCX: bac4ec53f522b800
RDX: dffffc0000000000 RSI: ffffffff8a8c18a0 RDI: ffffffff8adf68a0
RBP: ffffc90000157b58 R08: ffffc90000157adf R09: ffffc90000157a60
R10: dffffc0000000000 R11: fffff5200002af5c R12: ffff8880b8f37670
R13: dffffc0000000000 R14: ffff8880b8f37668 R15: ffff8880278a19a0
 free_object lib/debugobjects.c:424 [inline]
 debug_object_free+0x2c6/0x470 lib/debugobjects.c:913
 destroy_timer_on_stack kernel/time/timer.c:812 [inline]
 schedule_timeout+0x19d/0x2d0 kernel/time/timer.c:2172
 rcu_gp_fqs_loop+0x303/0x1350 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x99/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:742
Code: 48 89 df e8 37 f3 96 f7 e9 44 ff ff ff e8 7d 03 f6 ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 66 90 0f 00 2d 77 23 4a 00 fb f4 <c3> 0f 1f 40 00 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 48
RSP: 0018:ffffffff8c807d88 EFLAGS: 000002c6
RAX: a5592ede57895d00 RBX: ffffffff8a3c8957 RCX: a5592ede57895d00
RDX: 0000000000000001 RSI: ffffffff8a8c18a0 RDI: ffffffff8adf68a0
RBP: ffffffff8c807ec0 R08: ffff8880b8e357cb R09: 1ffff110171c6af9
R10: dffffc0000000000 R11: ffffed10171c6afa R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8c8bc740 R15: 1ffffffff1900fbc
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000040 CR3: 000000002813a000 CR4: 00000000003506f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 default_idle_call+0x84/0xc0 kernel/sched/idle.c:109
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x250/0x680 kernel/sched/idle.c:323
 cpu_startup_entry+0x3f/0x60 kernel/sched/idle.c:422
 rest_init+0x2dc/0x300 init/main.c:706
 arch_call_rest_init+0xa/0xa init/main.c:865
 start_kernel+0x493/0x53c init/main.c:1112
 secondary_startup_64_no_verify+0xcf/0xdb
 </TASK>