rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=269/1/0x4000000000000000 softirq=155072/155073 fqs=5211 
	(t=10502 jiffies g=296833 q=2914)
NMI backtrace for cpu 0
CPU: 0 PID: 32514 Comm: syz-executor.5 Not tainted 5.15.0-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: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+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:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x7/0x60 kernel/kcov.c:197
Code: fd ff ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 00 65 8b 05 d9 ab 8a 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 40 70 02 00 a9
RSP: 0018:ffffc90009def6b8 EFLAGS: 00000286
RAX: 0000000000000000 RBX: 0000000000152cc0 RCX: ffffc90014db9000
RDX: 0000000000040000 RSI: ffffffff81bb90ef RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8d6f7017
R10: fffffbfff1adee02 R11: 0000000000000001 R12: ffffea0005a97f00
R13: ffff888017db5c88 R14: 00000000000e4b43 R15: 0000000003e80000
 folio_alloc+0x29/0x70 mm/mempolicy.c:2203
 filemap_alloc_folio+0x8e/0xb0 mm/filemap.c:1021
 __page_cache_alloc include/linux/pagemap.h:275 [inline]
 page_cache_ra_unbounded+0x36a/0x940 mm/readahead.c:215
 do_page_cache_ra+0xf9/0x140 mm/readahead.c:268
 do_sync_mmap_readahead mm/filemap.c:2979 [inline]
 filemap_fault+0x1562/0x26d0 mm/filemap.c:3072
 __do_fault+0x10d/0x4e0 mm/memory.c:3859
 do_read_fault mm/memory.c:4183 [inline]
 do_fault mm/memory.c:4312 [inline]
 handle_pte_fault mm/memory.c:4570 [inline]
 __handle_mm_fault+0x28ac/0x5280 mm/memory.c:4705
 handle_mm_fault+0x1c8/0x790 mm/memory.c:4803
 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:2753 [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: 0033:0x7f372528dae9
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:00007f3722803188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f37253a0f60 RCX: 00007f372528dae9
RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f37252e7f25 R08: 0000000000000008 R09: 0000000000000000
R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdc0d017cf R14: 00007f3722803300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	b9 ff ff ff ff       	mov    $0xffffffff,%ecx
   5:	ba 08 00 00 00       	mov    $0x8,%edx
   a:	4d 8b 03             	mov    (%r11),%r8
   d:	48 0f bd ca          	bsr    %rdx,%rcx
  11:	49 8b 45 00          	mov    0x0(%r13),%rax
  15:	48 63 c9             	movslq %ecx,%rcx
  18:	e9 64 ff ff ff       	jmpq   0xffffff81
  1d:	0f 1f 00             	nopl   (%rax)
  20:	65 8b 05 d9 ab 8a 7e 	mov    %gs:0x7e8aabd9(%rip),%eax        # 0x7e8aac00
* 27:	89 c1                	mov    %eax,%ecx <-- trapping instruction
  29:	48 8b 34 24          	mov    (%rsp),%rsi
  2d:	81 e1 00 01 00 00    	and    $0x100,%ecx
  33:	65 48 8b 14 25 40 70 	mov    %gs:0x27040,%rdx
  3a:	02 00
  3c:	a9                   	.byte 0xa9