rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2667 jiffies s: 23097 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5044 Comm: syz-executor962 Not tainted 6.5.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x0/0x20 kernel/kcov.c:289
Code: 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 48 89 f2 48 89 fe bf 06 00 00 00 e9 f8 fe ff ff 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 e9
RSP: 0018:ffffc90000007bb8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000bd6e1a0 RCX: 0000000000000100
RDX: 1ffff920017adc34 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88807c40ab00 R08: 0000000000000004 R09: 000000000000ee3c
R10: 000000000000c696 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000007 R14: ffffed100f88155a R15: 000000000000ee3c
FS:  000055555650d480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f59c805d228 CR3: 000000007a6df000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 pie_calculate_probability+0x7d/0x850 net/sched/sch_pie.c:308
 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 d6 7b 31 f7 48 89 df e8 ae fa 31 f7 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f <bf> 01 00 00 00 e8 55 9d 23 f7 65 8b 05 a6 2b ce 75 85 c0 74 12 5b
RSP: 0018:ffffc90003d0fc48 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffff88802676e560 RCX: 1ffffffff1d56af1
RDX: 0000000000000000 RSI: ffffffff8a6c7460 RDI: ffffffff8ac804a0
RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8eab8917 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffc90003d0fcf8 R14: 0000000000000000 R15: 0000000000000004
 do_wait+0x173/0xc70 kernel/exit.c:1593
 kernel_wait4+0x16d/0x280 kernel/exit.c:1780
 __do_sys_wait4+0x15b/0x170 kernel/exit.c:1808
 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: 0033:0x7f59c800ad63
Code: fd ff e9 41 ff ff ff 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 80 3d 61 63 08 00 00 49 89 ca 74 14 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5d c3 0f 1f 40 00 48 83 ec 28 89 54 24 14 48
RSP: 002b:00007ffe11fa9c58 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00007ffe11fa9d90 RCX: 00007f59c800ad63
RDX: 0000000040000001 RSI: 00007ffe11fa9d0c RDI: 00000000ffffffff
RBP: 000000000003e54b R08: 0000000000000100 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000f4240
R13: 00007ffe11fa9d60 R14: 00007ffe11fa9d0c R15: 0000000000000384
 </TASK>