rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=9909, q=908 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294955827-4294945325), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g9909 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:27320 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 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: 5874 Comm: kworker/1:3 Not tainted 6.16.0-rc3-syzkaller-00159-g223e2288f4b8-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events_power_efficient gc_worker
RIP: 0010:timerqueue_add+0x5f/0x200
Code: 3c 28 00 74 08 4c 89 e7 e8 8e eb b8 f6 4d 8b 3c 24 4c 89 ff 4c 89 e6 e8 1f 6a 55 f6 4d 39 e7 0f 85 8c 01 00 00 e8 b1 67 55 f6 <4c> 89 f3 48 c1 eb 03 42 80 3c 2b 00 74 08 4c 89 f7 e8 5b eb b8 f6
RSP: 0018:ffffc900001e0cf0 EFLAGS: 00000006
RAX: ffffffff8b6af6bf RBX: 0000000000000000 RCX: ffff88810a910000
RDX: 0000000000010000 RSI: ffff888112429340 RDI: ffff888112429340
RBP: ffffc900001e0e90 R08: ffffffff8fa1def7 R09: 1ffffffff1f43bde
R10: dffffc0000000000 R11: fffffbfff1f43bdf R12: ffff888112429340
R13: dffffc0000000000 R14: ffff888136627c10 R15: ffff888112429340
FS:  0000000000000000(0000) GS:ffff8881a3c1d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f66a237e2d8 CR3: 0000000027524000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __hrtimer_run_queues+0x656/0xc60
 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:seqcount_lockdep_reader_access+0x17e/0x1c0
Code: f8 4d 85 e4 75 16 e8 21 08 21 f8 eb 15 e8 1a 08 21 f8 e8 75 92 cf 01 4d 85 e4 74 ea e8 0b 08 21 f8 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00
RSP: 0018:ffffc9000463f860 EFLAGS: 00000293
RAX: ffffffff899f5665 RBX: 0000000000000000 RCX: ffff88810a910000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000463f910 R08: ffffffff8fa1def7 R09: 1ffffffff1f43bde
R10: dffffc0000000000 R11: fffffbfff1f43bdf R12: 0000000000000200
R13: ffff888107017018 R14: 1ffff920008c7f0c R15: dffffc0000000000
 gc_worker+0x308/0x1380
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
