rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=6d9/1/0x4000000000000000 softirq=122846/122870 fqs=4595 
	(t=10501 jiffies g=191661 q=38676)
NMI backtrace for cpu 1
CPU: 1 PID: 26124 Comm: syz-executor.1 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3878 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
 update_process_times+0x16d/0x200 kernel/time/timer.c:1785
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1097
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:div_u64_rem include/linux/math64.h:29 [inline]
RIP: 0010:div_u64 include/linux/math64.h:128 [inline]
RIP: 0010:pie_calculate_probability+0x27d/0x7c0 net/sched/sch_pie.c:348
Code: 89 c6 4c 89 6c 24 38 e8 d1 5f 1a fa 47 8d 24 a4 31 d2 4c 89 ff 43 8d 0c 24 48 c1 ed 02 48 b8 ff ff ff ff ff ff ff 00 48 f7 f1 <49> 89 c5 48 89 c6 48 c1 eb 02 49 89 cc e8 11 63 1a fa 4d 39 ef 73
RSP: 0018:ffffc90000dc0c50 EFLAGS: 00000207
RAX: 0000068db8bac710 RBX: 000000002af31dc4 RCX: 0000000000002710
RDX: 0000000000001eff RSI: ffffffff875d383f RDI: 0000000000000000
RBP: 000000000112e0be R08: 00000000000f4240 R09: 0000000000000000
R10: ffffffff875d3886 R11: 0000000000000000 R12: 0000000000001388
R13: 00004189374bc6a7 R14: 0000000000000004 R15: 0000000000000000
 fq_pie_timer+0x170/0x2a0 net/sched/sch_fq_pie.c:383
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
 expire_timers kernel/time/timer.c:1466 [inline]
 __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
 __run_timers kernel/time/timer.c:1715 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:___slab_alloc+0x791/0xfe0 mm/slub.c:3088
Code: 48 89 df e8 51 9c ff ff 41 81 e5 00 02 00 00 0f 85 c0 04 00 00 9c 58 f6 c4 02 0f 85 73 05 00 00 4d 85 ed 74 01 fb 48 8b 45 c8 <65> 48 2b 04 25 28 00 00 00 0f 85 b1 06 00 00 48 8d 65 d0 4c 89 f0
RSP: 0018:ffffc9001b5ef8d0 EFLAGS: 00000206
RAX: d4ce18021af95800 RBX: ffff8880b9d408d0 RCX: 1ffffffff1b21f11
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9001b5ef9b0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817ddbf8 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000200 R14: ffff888019e6d850 R15: 00000000000408d0
 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3109
 slab_alloc_node mm/slub.c:3200 [inline]
 slab_alloc mm/slub.c:3242 [inline]
 kmem_cache_alloc+0x35c/0x3a0 mm/slub.c:3247
 kmem_cache_zalloc include/linux/slab.h:714 [inline]
 lsm_file_alloc security/security.c:572 [inline]
 security_file_alloc+0x34/0x170 security/security.c:1516
 __alloc_file+0xd8/0x280 fs/file_table.c:106
 alloc_empty_file+0x6d/0x170 fs/file_table.c:150
 path_openat+0xe1/0x2750 fs/namei.c:3545
 do_filp_open+0x1aa/0x400 fs/namei.c:3586
 do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
 do_sys_open fs/open.c:1228 [inline]
 __do_sys_openat fs/open.c:1244 [inline]
 __se_sys_openat fs/open.c:1239 [inline]
 __x64_sys_openat+0x13f/0x1f0 fs/open.c:1239
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f5fda3d7ae9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5fd794d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f5fda4eaf60 RCX: 00007f5fda3d7ae9
RDX: 0000000000000000 RSI: 0000000020000280 RDI: ffffffffffffff9c
RBP: 00007f5fda431f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5fdaa1eb2f R14: 00007f5fd794d300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 c6                	mov    %eax,%esi
   2:	4c 89 6c 24 38       	mov    %r13,0x38(%rsp)
   7:	e8 d1 5f 1a fa       	callq  0xfa1a5fdd
   c:	47 8d 24 a4          	lea    (%r12,%r12,4),%r12d
  10:	31 d2                	xor    %edx,%edx
  12:	4c 89 ff             	mov    %r15,%rdi
  15:	43 8d 0c 24          	lea    (%r12,%r12,1),%ecx
  19:	48 c1 ed 02          	shr    $0x2,%rbp
  1d:	48 b8 ff ff ff ff ff 	movabs $0xffffffffffffff,%rax
  24:	ff ff 00
  27:	48 f7 f1             	div    %rcx
* 2a:	49 89 c5             	mov    %rax,%r13 <-- trapping instruction
  2d:	48 89 c6             	mov    %rax,%rsi
  30:	48 c1 eb 02          	shr    $0x2,%rbx
  34:	49 89 cc             	mov    %rcx,%r12
  37:	e8 11 63 1a fa       	callq  0xfa1a634d
  3c:	4d 39 ef             	cmp    %r13,%r15
  3f:	73                   	.byte 0x73