rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=104501, q=325 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10500 (4295005306-4294994806), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g104501 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=36370
rcu: rcu_preempt kthread starved for 10500 jiffies! g104501 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200 ->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 stack:27032 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 rcu_gp_fqs_loop+0x301/0x1540
 rcu_gp_kthread+0x99/0x390
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 25810 Comm: syz.8.6510 Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__lock_acquire+0x332/0xd20
Code: e5 15 09 d5 09 cd 44 09 f5 41 89 6c c7 20 45 89 44 c7 24 4c 89 7c 24 10 4d 8d 34 c7 81 e5 ff 1f 00 00 48 0f a3 2d ae 21 0a 12 <73> 10 48 69 c5 c8 00 00 00 48 8d 80 10 83 48 93 eb 40 83 3d 15 b1
RSP: 0018:ffffc900001e0b70 EFLAGS: 00000003
RAX: 0000000000000005 RBX: ffff888136627a98 RCX: 0000000000000067
RDX: 0000000000080000 RSI: 0000000000004000 RDI: ffff888113ea5640
RBP: 0000000000000067 R08: 0000000000000000 R09: ffffffff81adb3b2
R10: dffffc0000000000 R11: fffffbfff1f46847 R12: 0000000000004000
R13: 0000000000000000 R14: ffff888113ea6158 R15: ffff888113ea6130
FS:  00007fa2038bc6c0(0000) GS:ffff8881a3c24000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000240 CR3: 000000010e63e000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 lock_acquire+0x120/0x360
 _raw_spin_lock_irq+0xa2/0xf0
 __hrtimer_run_queues+0x602/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 ab 26 4c f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> f3 cd 14 f6 65 8b 05 6c 91 24 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc90002ebfb60 EFLAGS: 00000206
RAX: 4b666960d3087800 RBX: 0000000000000a06 RCX: 4b666960d3087800
RDX: 0000000000000007 RSI: ffffffff8d9b4408 RDI: 0000000000000001
RBP: ffffc90002ebfbf0 R08: ffffffff8fa34237 R09: 1ffffffff1f46846
R10: dffffc0000000000 R11: fffffbfff1f46847 R12: dffffc0000000000
R13: ffff88804b027a80 R14: ffff88804b027a80 R15: 1ffff920005d7f6c
 clock_was_set+0x63b/0x7c0
 do_settimeofday64+0x41d/0x630
 __x64_sys_clock_settime+0x22c/0x280
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa20298ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa2038bc038 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007fa202bb5fa0 RCX: 00007fa20298ebe9
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007fa202a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa202bb6038 R14: 00007fa202bb5fa0 R15: 00007fff0ec99a58
 </TASK>
