rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P1449/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=257501, q=1057000 ncpus=2)
task:syz.9.6208      state:R  running task     stack:26840 pid:1449  tgid:1445  ppid:31824  task_flags:0x400040 flags:0x00080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7256
 irqentry_exit+0x6f/0x90 kernel/entry/common.c:211
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5872
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 bb cc d0 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90003c7f338 EFLAGS: 00000206
RAX: 93ca4bdee8df0300 RBX: 0000000000000000 RCX: 93ca4bdee8df0300
RDX: 0000000000000000 RSI: ffffffff8d8f29f0 RDI: ffffffff8bbf05e0
RBP: ffffffff822f147e R08: 0000000000000000 R09: ffffffff822f147e
R10: 000000000000000f R11: ffffffff81ac2d30 R12: 0000000000000002
R13: ffffffff8df3d2e0 R14: 0000000000000000 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:867 [inline]
 __update_page_owner_free_handle+0x4b/0x470 mm/page_owner.c:274
 __reset_page_owner+0x85/0x1f0 mm/page_owner.c:312
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 discard_slab mm/slub.c:3326 [inline]
 __put_partials+0x146/0x170 mm/slub.c:3872
 put_cpu_partial+0x1f2/0x2e0 mm/slub.c:3947
 __slab_free+0x2b9/0x390 mm/slub.c:5921
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:352
 kasan_slab_alloc include/linux/kasan.h:252 [inline]
 slab_post_alloc_hook mm/slub.c:4970 [inline]
 slab_alloc_node mm/slub.c:5280 [inline]
 kmem_cache_alloc_noprof+0x367/0x6e0 mm/slub.c:5287
 vm_area_alloc+0x24/0x140 mm/vma_init.c:32
 __mmap_new_vma mm/vma.c:2461 [inline]
 __mmap_region mm/vma.c:2670 [inline]
 mmap_region+0xdcd/0x2110 mm/vma.c:2740
 do_mmap+0xc45/0x10d0 mm/mmap.c:558
 vm_mmap_pgoff+0x2a6/0x4d0 mm/util.c:581
 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:604
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f54d9d8f003
RSP: 002b:00007f54dacd1fc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f54d9fe6180 RCX: 00007f54d9d8f003
RDX: 0000000000000003 RSI: 0000000000024040 RDI: 0000000000000000
RBP: 0000200000000100 R08: 0000000000000006 R09: 0000000000000000
R10: 0000000000008001 R11: 0000000000000246 R12: 0000000000000006
R13: 0000200000000240 R14: 0000000000000caf R15: 00002000000000c0
 </TASK>