rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=c8f/1/0x4000000000000000 softirq=187774/187776 fqs=5205 
	(t=10502 jiffies g=362305 q=2785)
NMI backtrace for cpu 0
CPU: 0 PID: 1953 Comm: syz-executor.0 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_heap_object mm/usercopy.c:228 [inline]
RIP: 0010:__check_object_size mm/usercopy.c:286 [inline]
RIP: 0010:__check_object_size+0xb1/0x3f0 mm/usercopy.c:256
Code: 35 cb b0 ff 48 89 de 4c 89 e7 e8 ba fd ff ff 48 c7 c6 c0 65 99 89 48 63 f8 49 89 fe e8 38 c3 b0 ff 45 85 f6 0f 85 e4 00 00 00 <e8> 0a cb b0 ff 4c 89 e7 e8 92 22 6e ff 31 ff 41 89 c6 89 c6 e8 36
RSP: 0018:ffffc90002dafb30 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000007 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffff888079e30000 RDI: 0000000000000003
RBP: ffff88807cf10877 R08: ffffffff899965c0 R09: ffffffff81c6a778
R10: 0000000000000003 R11: 0000000000000000 R12: ffff88807cf10870
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880278fb000
 check_object_size include/linux/thread_info.h:185 [inline]
 check_copy_size include/linux/thread_info.h:218 [inline]
 copy_from_user include/linux/uaccess.h:191 [inline]
 generic_map_update_batch+0x32a/0x5b0 kernel/bpf/syscall.c:1391
 bpf_map_do_batch+0x3d5/0x510 kernel/bpf/syscall.c:4207
 __sys_bpf+0x2751/0x5f00 kernel/bpf/syscall.c:4682
 __do_sys_bpf kernel/bpf/syscall.c:4722 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4720 [inline]
 __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4720
 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: 0033:0x7f4a215a8ae9
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:00007f4a1eafd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f4a216bc020 RCX: 00007f4a215a8ae9
RDX: 0000000000000038 RSI: 0000000020000100 RDI: 000000000000001a
RBP: 00007f4a21602f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffca438b6f R14: 00007f4a1eafd300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	35 cb b0 ff 48       	xor    $0x48ffb0cb,%eax
   5:	89 de                	mov    %ebx,%esi
   7:	4c 89 e7             	mov    %r12,%rdi
   a:	e8 ba fd ff ff       	callq  0xfffffdc9
   f:	48 c7 c6 c0 65 99 89 	mov    $0xffffffff899965c0,%rsi
  16:	48 63 f8             	movslq %eax,%rdi
  19:	49 89 fe             	mov    %rdi,%r14
  1c:	e8 38 c3 b0 ff       	callq  0xffb0c359
  21:	45 85 f6             	test   %r14d,%r14d
  24:	0f 85 e4 00 00 00    	jne    0x10e
* 2a:	e8 0a cb b0 ff       	callq  0xffb0cb39 <-- trapping instruction
  2f:	4c 89 e7             	mov    %r12,%rdi
  32:	e8 92 22 6e ff       	callq  0xff6e22c9
  37:	31 ff                	xor    %edi,%edi
  39:	41 89 c6             	mov    %eax,%r14d
  3c:	89 c6                	mov    %eax,%esi
  3e:	e8                   	.byte 0xe8
  3f:	36                   	ss