rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (3 ticks this GP) idle=cebc/1/0x4000000000000000 softirq=21014/21014 fqs=0
rcu: 	(detected by 0, t=10505 jiffies, g=19105, q=400 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5856 Comm: syz-executor Not tainted 6.12.0-syzkaller-10681-g65ae975e97d5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:223 [inline]
RIP: 0010:__lock_acquire+0xf2c/0x2100 kernel/locking/lockdep.c:5222
Code: 85 7d 04 00 00 48 83 7c 24 20 00 4c 8b 74 24 18 0f 84 6b 03 00 00 48 8b 44 24 38 48 8d 58 f8 48 89 d8 48 c1 e8 03 0f b6 04 38 <84> c0 0f 85 35 0f 00 00 8b 1b 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8
RSP: 0018:ffffc90000a18930 EFLAGS: 00000802
RAX: 0000000000000000 RBX: ffff888060084700 RCX: 0000000030c7e023
RDX: 000000005dced50b RSI: 00000000e24e0662 RDI: dffffc0000000000
RBP: 71a5d68fa1cc311c R08: ffffffff94323887 R09: 1ffffffff2864710
R10: dffffc0000000000 R11: fffffbfff2864711 R12: ffff888060083c00
R13: ffff888060083c00 R14: 1ffff1100c0108e5 R15: 0000000000000000
FS:  000055555a12f500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6ea3a39fb8 CR3: 0000000079246000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x158/0x390 lib/debugobjects.c:873
 debug_hrtimer_deactivate kernel/time/hrtimer.c:433 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:475
 __run_hrtimer kernel/time/hrtimer.c:1707 [inline]
 __hrtimer_run_queues+0x305/0xd50 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 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:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5243
Code: c9 50 e8 79 07 0c 00 48 83 c4 08 4c 89 f7 e8 9d 39 00 00 0f 1f 44 00 00 4c 89 f7 e8 f0 d3 77 0a e8 1b 9a 38 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc90003f7f968 EFLAGS: 00000286
RAX: aeb18d18eae3fd00 RBX: ffff888060083c00 RCX: ffffffff9a42a903
RDX: dffffc0000000000 RSI: ffffffff8c0ad980 RDI: ffffffff8c6158a0
RBP: ffffc90003f7f9b0 R08: ffffffff901e34b7 R09: 1ffffffff203c696
R10: dffffc0000000000 R11: fffffbfff203c697 R12: 1ffff110170e7eb4
R13: dffffc0000000000 R14: ffff8880b873e780 R15: ffff8880b873f5a0
 context_switch kernel/sched/core.c:5372 [inline]
 __schedule+0x1858/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 do_nanosleep+0x197/0x600 kernel/time/hrtimer.c:2079
 hrtimer_nanosleep+0x1ec/0x410 kernel/time/hrtimer.c:2126
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1402 [inline]
 __se_sys_clock_nanosleep+0x32b/0x3c0 kernel/time/posix-timers.c:1379
 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: 0033:0x7fb9acbb2925
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 d6 57 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 2f 58 ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007ffe6f0b3ff0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000000000000023b RCX: 00007fb9acbb2925
RDX: 00007ffe6f0b4030 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe6f0b408c R08: 0000000000000000 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 000000000001fee6 R14: 000000000001fe4d R15: 00007ffe6f0b40e0
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10504 jiffies! g19105 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=8312
rcu: rcu_preempt kthread starved for 10505 jiffies! g19105 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:25776 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 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>