rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6963/1:b..l P5616/4:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=19593, q=601 ncpus=2)
task:syz-executor    state:R  running task     stack:20880 pid:5616  tgid:5616  ppid:5610   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5402 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7204
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7528
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x8b0 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__page_table_check_ptes_set+0x1a9/0x320 mm/page_table_check.c:-1
Code: 0b e8 5b 33 8e ff 90 0f 0b 90 eb 05 e8 50 33 8e ff 31 ff 89 ee e8 f7 37 8e ff 41 89 ef 85 ed 0f 84 a6 00 00 00 4c 89 6c 24 08 <4c> 89 3c 24 4a 8d 2c fd f8 ff ff ff 31 db 49 bf 00 00 00 00 00 fc
RSP: 0000:ffffc900048d72d0 EFLAGS: 00000202
RAX: ffffffff82371759 RBX: 8000000051a4b007 RCX: ffff888034dc0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff9400028d259 R12: dffffc0000000000
R13: 8000000051a4b007 R14: ffff88805e681600 R15: 0000000000000001
 page_table_check_ptes_set include/linux/page_table_check.h:83 [inline]
 set_ptes include/linux/pgtable.h:413 [inline]
 __copy_present_ptes mm/memory.c:1118 [inline]
 copy_present_ptes mm/memory.c:1197 [inline]
 copy_pte_range mm/memory.c:1320 [inline]
 copy_pmd_range+0x350b/0x5550 mm/memory.c:1408
 copy_pud_range mm/memory.c:1445 [inline]
 copy_p4d_range mm/memory.c:1469 [inline]
 copy_page_range+0xb3f/0x1150 mm/memory.c:1555
 dup_mmap+0xf5a/0x1d70 mm/mmap.c:1840
 dup_mm kernel/fork.c:1542 [inline]
 copy_mm+0x11a/0x480 kernel/fork.c:1594
 copy_process+0x1e30/0x43d0 kernel/fork.c:2291
 kernel_clone+0x2d7/0x940 kernel/fork.c:2749
 __do_sys_clone kernel/fork.c:2890 [inline]
 __se_sys_clone kernel/fork.c:2874 [inline]
 __x64_sys_clone+0x1b6/0x230 kernel/fork.c:2874
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8143a458d2