rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10498 ticks this GP) idle=cf74/1/0x4000000000000000 softirq=23517/23526 fqs=5248
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1161860          0            0
rcu: 	cputime:    24984      27505           77   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=11537 q=2588 ncpus=2)
CPU: 1 UID: 0 PID: 7013 Comm: syz.6.316 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #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:rcu_cblist_dequeue+0x27/0xc0
Code: 90 90 90 66 0f 1f 00 41 57 41 56 41 55 41 54 53 48 89 fb 49 bc 00 00 00 00 00 fc ff df 49 89 fd 49 c1 ed 03 43 80 7c 25 00 00 <74> 08 48 89 df e8 3f 5c 7a 00 4c 8b 33 4d 85 f6 74 69 4c 8d 7b 10
RSP: 0018:ffffc900001e0bb0 EFLAGS: 00000246
RAX: 0000000000000101 RBX: ffffc900001e0d40 RCX: 55b86e8d4e71b700
RDX: 0000000000000000 RSI: ffffffff8db863da RDI: ffffc900001e0d40
RBP: ffffc900001e0e30 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: 1ffff9200003c1a8 R14: 1ffff110212da7c9 R15: 0000000000000008
FS:  00007eff0a1906c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000080 CR3: 0000000021e6e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_core+0xbf3/0x1710
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 5b 22 21 f6 e8 96 f5 57 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90002fdfa40 EFLAGS: 00000286
RAX: 55b86e8d4e71b700 RBX: 0000000000000000 RCX: 55b86e8d4e71b700
RDX: 0000000000000000 RSI: ffffffff8d9986f9 RDI: 0000000000000001
RBP: ffffc90002fdfae0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920005fbf48
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:futex_hash+0x1cc/0x430
Code: ad 0c 00 44 89 f0 89 d9 d3 e8 48 c7 c1 74 f0 a1 8f 48 c1 e9 03 42 0f b6 0c 29 84 c9 0f 85 12 02 00 00 31 d2 f7 35 88 80 ee 0d <48> 63 da 48 89 d8 48 c1 e8 06 48 8d 3c c5 40 f0 a1 8f be 08 00 00
RSP: 0018:ffffc90002fdfba8 EFLAGS: 00000246
RAX: 000000000020d2e5 RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000020
RBP: 00000000c28b8edb R08: ffffc90002fdfc57 R09: 0000000000000000
R10: ffffc90002fdfc40 R11: fffff520005fbf8b R12: 0000000012fa92b4
R13: dffffc0000000000 R14: 0000000041a5cb66 R15: ffffc90002fdfc4c
 futex_wake+0x175/0x500
 do_futex+0x395/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7eff0938e9a9
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:00007eff0a1900e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007eff095b5fa8 RCX: 00007eff0938e9a9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007eff095b5fac
RBP: 00007eff095b5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000000246 R12: 00007eff095b5fac
R13: 0000000000000000 R14: 00007ffcf6f7ef60 R15: 00007ffcf6f7f048
 </TASK>
sched: DL replenish lagged too much
