rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=0ef/1/0x4000000000000000 softirq=52370/52370 fqs=4114 
	(t=10501 jiffies g=99153 q=41030)
NMI backtrace for cpu 1
CPU: 1 PID: 24638 Comm: syz-executor.3 Not tainted 5.15.0-rc5-next-20211018-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:105
 nmi_trigger_cpumask_backtrace+0x1ae/0x220 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:604 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:688 [inline]
 rcu_pending kernel/rcu/tree.c:3889 [inline]
 rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2608
 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:1428
 __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+0x8e/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:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5605
Code: dc a5 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900115af3a0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920022b5e76 RCX: ffffffff815c4b4f
RDX: 1ffff1100edeb14c RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8ff47a17
R10: fffffbfff1fe8f42 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8bcc63a0 R15: 0000000000000000
 fs_reclaim_acquire mm/page_alloc.c:4550 [inline]
 fs_reclaim_acquire+0xd2/0x160 mm/page_alloc.c:4541
 prepare_alloc_pages+0x15c/0x570 mm/page_alloc.c:5158
 __alloc_pages+0x12f/0x500 mm/page_alloc.c:5375
 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191
 folio_alloc+0x1c/0x70 mm/mempolicy.c:2201
 filemap_alloc_folio+0x8e/0xb0 mm/filemap.c:1029
 __page_cache_alloc include/linux/pagemap.h:325 [inline]
 page_cache_ra_unbounded+0x36a/0x940 mm/readahead.c:215
 do_page_cache_ra mm/readahead.c:268 [inline]
 ondemand_readahead+0x594/0x1090 mm/readahead.c:551
 page_cache_async_ra mm/readahead.c:608 [inline]
 page_cache_async_ra+0x2e1/0x3f0 mm/readahead.c:583
 page_cache_async_readahead include/linux/pagemap.h:1003 [inline]
 do_async_mmap_readahead mm/filemap.c:3013 [inline]
 filemap_fault+0xbc9/0x26d0 mm/filemap.c:3069
 __do_fault+0x10d/0x4d0 mm/memory.c:3849
 do_read_fault mm/memory.c:4155 [inline]
 do_fault mm/memory.c:4284 [inline]
 handle_pte_fault mm/memory.c:4542 [inline]
 __handle_mm_fault+0x28e8/0x5120 mm/memory.c:4677
 handle_mm_fault+0x1c8/0x790 mm/memory.c:4775
 faultin_page mm/gup.c:939 [inline]
 __get_user_pages+0x522/0xfb0 mm/gup.c:1160
 populate_vma_page_range+0x24d/0x330 mm/gup.c:1492
 __mm_populate+0x1ea/0x3e0 mm/gup.c:1601
 mm_populate include/linux/mm.h:2734 [inline]
 vm_mmap_pgoff+0x20e/0x290 mm/util.c:524
 ksys_mmap_pgoff+0x49f/0x620 mm/mmap.c:1624
 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: 0033:0x7fd4cadc5a39
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:00007fd4c833b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fd4caec8f60 RCX: 00007fd4cadc5a39
RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007fd4cae1fc5f R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff2cdc8a3f R14: 00007fd4c833b300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	dc a5 7e 83 f8 01    	fsubl  0x1f8837e(%rbp)
   6:	0f 85 b4 02 00 00    	jne    0x2c0
   c:	9c                   	pushfq
   d:	58                   	pop    %rax
   e:	f6 c4 02             	test   $0x2,%ah
  11:	0f 85 9f 02 00 00    	jne    0x2b6
  17:	48 83 7c 24 08 00    	cmpq   $0x0,0x8(%rsp)
  1d:	74 01                	je     0x20
  1f:	fb                   	sti
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	48 01 c3             	add    %rax,%rbx <-- trapping instruction
  2d:	48 c7 03 00 00 00 00 	movq   $0x0,(%rbx)
  34:	48 c7 43 08 00 00 00 	movq   $0x0,0x8(%rbx)
  3b:	00
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	84                   	.byte 0x84
  3f:	24                   	.byte 0x24