rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2676 jiffies s: 105805 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 27264 Comm: syz-executor.2 Not tainted 6.5.0-rc2-syzkaller-00242-gde52e17326c3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:pie_calculate_probability+0x2b8/0x850 net/sched/sch_pie.c:354
Code: 49 89 cc e8 3a f3 2d f9 49 39 ef 73 18 e8 20 f8 2d f9 44 89 e6 bf 40 42 0f 00 e8 83 f3 2d f9 41 83 ed 01 75 ae 48 89 5c 24 20 <4c> 8b 6c 24 30 48 8b 6c 24 38 48 8b 5c 24 40 e8 f4 f7 2d f9 4c 8b
RSP: 0018:ffffc900001e0bc0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00000000002af31d RCX: ffffffff8858789d
RDX: ffff88814f2bbb80 RSI: 0000000000000100 RDI: 0000000000000005
RBP: 00000001ad7f29ab R08: 0000000000000005 R09: 00000000000f4240
R10: 0000000000989680 R11: 0000000000000000 R12: 0000000000989680
R13: 0000000000000000 R14: 0000000000044b82 R15: 0000000000000000
FS:  00005555563f0480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fc21000 CR3: 0000000162794000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 fq_pie_timer+0x1da/0x4f0 net/sched/sch_fq_pie.c:387
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x764/0xb10 kernel/time/timer.c:2022
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 e6 ba 31 f7 48 89 df e8 9e 33 32 f7 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f <bf> 01 00 00 00 e8 65 dc 23 f7 65 8b 05 56 fb cd 75 85 c0 74 12 5b
RSP: 0018:ffffc9002421fc68 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff8880b992b880 RCX: 1ffffffff1d569e1
RDX: 0000000000000000 RSI: ffffffff8a6c7700 RDI: ffffffff8ac806e0
RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8eab8097 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffc9002421fdd0 R14: 00000000000f4240 R15: ffff88814f2bbb98
 hrtimer_start_expires include/linux/hrtimer.h:432 [inline]
 hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1968 [inline]
 do_nanosleep+0x1f2/0x500 kernel/time/hrtimer.c:2044
 hrtimer_nanosleep+0x1ae/0x440 kernel/time/hrtimer.c:2100
 common_nsleep+0xa1/0xc0 kernel/time/posix-timers.c:1350
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline]
 __se_sys_clock_nanosleep kernel/time/posix-timers.c:1373 [inline]
 __x64_sys_clock_nanosleep+0x344/0x490 kernel/time/posix-timers.c:1373
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6116ea7f35
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 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 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007ffd3986a560 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00007f6116f9bf80 RCX: 00007f6116ea7f35
RDX: 00007ffd3986a5a0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f6116f9d980 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000184996
R13: ffffffffffffffff R14: 00007f6116a00000 R15: 0000000000184655
 </TASK>