rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6017/2:b..l P160/1:b..l P3387/1:b..l P7375/1:b..l P5598/4:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=23213, q=237 ncpus=2)
task:syz-executor    state:R  running task     stack:22536 pid:5598  tgid:5598  ppid:5596   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5388 [inline]
 __schedule+0x1681/0x54c0 kernel/sched/core.c:7189
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
 irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__pte_needs_invert arch/x86/include/asm/pgtable-invert.h:18 [inline]
RIP: 0010:protnone_mask arch/x86/include/asm/pgtable-invert.h:24 [inline]
RIP: 0010:pte_pfn arch/x86/include/asm/pgtable.h:259 [inline]
RIP: 0010:vm_normal_page+0x3e/0x1d0 mm/memory.c:754
Code: 49 89 fc e8 44 5b b2 ff 31 ff 4c 89 f6 e8 9a 60 b2 ff 4d 85 f6 0f 95 c3 4c 89 f6 48 83 e6 01 40 0f 94 c5 31 ff e8 82 60 b2 ff <40> 20 dd 40 0f b6 c5 48 f7 d8 4c 31 f0 48 c1 e8 0c 48 bb ff ff ff
RSP: 0018:ffffc9000447f308 EFLAGS: 00000293
RAX: ffffffff8212161e RBX: 8000000056974001 RCX: ffff88803fe3dc40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000447f500 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10039c1e88 R12: ffff88802b4c08c0
R13: ffff88802b4c08e0 R14: 8000000056974007 R15: 00007f57c5f45000
 copy_present_ptes mm/memory.c:1122 [inline]
 copy_pte_range mm/memory.c:1304 [inline]
 copy_pmd_range+0x704/0x5550 mm/memory.c:1392
 copy_pud_range mm/memory.c:1429 [inline]
 copy_p4d_range mm/memory.c:1453 [inline]
 copy_page_range+0xaf4/0x1120 mm/memory.c:1539
 dup_mmap+0xf4c/0x1d50 mm/mmap.c:1840
 dup_mm kernel/fork.c:1534 [inline]
 copy_mm+0x13b/0x4a0 kernel/fork.c:1586
 copy_process+0x1f24/0x4450 kernel/fork.c:2264
 kernel_clone+0x283/0x870 kernel/fork.c:2721
 __do_sys_clone kernel/fork.c:2862 [inline]
 __se_sys_clone kernel/fork.c:2846 [inline]
 __x64_sys_clone+0x1b6/0x230 kernel/fork.c:2846
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f57c6fa5852
RSP: 002b:00007ffd9546e870 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffd9546e870 RCX: 00007f57c6fa5852
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd9546e9fc R08: 0000000000000000 R09: 0000000000000001
R10: 000055556cea27d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000006ce64 R15: 00007ffd9546ea50
 </TASK>
task:udevd           state:R  running task     stack:25360 pid:7375  tgid:7375  ppid:4963   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5388 [inline]
 __schedule+0x1681/0x54c0 kernel/sched/core.c:7189
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
 irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__kasan_check_byte+0x2c/0x40 mm/kasan/common.c:578
Code: 40 d6 41 56 53 48 89 f3 49 89 fe e8 3e 15 00 00 84 c0 75 16 be 01 00 00 00 4c 89 f7 31 d2 48 89 d9 89 c3 e8 f6 04 00 00 89 d8 <5b> 41 5e e9 cc c8 f4 08 cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc900042af540 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8b1ebdc8 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8b1ebdc8 RDI: 1ffffffff1bf9028
RBP: ffffffff8b1ebdac R08: 0000000000000000 R09: 0000000000000000