BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 30 Comm: kcompactd0 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
 lookup_chain_cache_add kernel/locking/lockdep.c:3736 [inline]
 validate_chain+0x7e8/0x8240 kernel/locking/lockdep.c:3757
 __lock_acquire+0x1382/0x2b00 kernel/locking/lockdep.c:5015
 lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5625
 do_write_seqcount_begin_nested include/linux/seqlock.h:520 [inline]
 do_write_seqcount_begin include/linux/seqlock.h:545 [inline]
 vtime_task_switch_generic+0xae/0x580 kernel/sched/cputime.c:768
 vtime_task_switch include/linux/vtime.h:95 [inline]
 finish_task_switch+0x3f5/0x630 kernel/sched/core.c:4808
 context_switch kernel/sched/core.c:4943 [inline]
 __schedule+0xb7a/0x1460 kernel/sched/core.c:6287
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6687
 irqentry_exit+0x56/0x90 kernel/entry/common.c:425
 asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_acquire+0x21f/0x4d0 kernel/locking/lockdep.c:5629
Code: 08 4c 89 f7 e8 02 e9 69 00 f6 84 24 81 00 00 00 02 0f 85 13 02 00 00 41 f7 c4 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 09 00 00 00 00 43 c7 44 2f 11
RSP: 0018:ffffc90000e5ee60 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920001cbddc RCX: ffff888011e2df98
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000e5efc0 R08: dffffc0000000000 R09: fffffbfff1fa39e1
R10: fffffbfff1fa39e1 R11: 0000000000000000 R12: 0000000000000246
R13: 1ffff920001cbdd4 R14: ffffc90000e5eee0 R15: dffffc0000000000
 mmu_notifier_invalidate_range_start+0x51/0xf0 include/linux/mmu_notifier.h:456
 try_to_migrate_one+0x50d/0x13b0 mm/rmap.c:1744
 rmap_walk_anon+0x385/0x590 mm/rmap.c:2297
 try_to_migrate+0x50b/0x5e0
 __unmap_and_move+0x798/0xcb0 mm/migrate.c:1065
 unmap_and_move+0x339/0xd70 mm/migrate.c:1211
 migrate_pages+0x50f/0x1780 mm/migrate.c:1488
 compact_zone+0x2d23/0x3d10 mm/compaction.c:2393
 kcompactd_do_work mm/compaction.c:2833 [inline]
 kcompactd+0x937/0x2920 mm/compaction.c:2935
 kthread+0x453/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
   0:	08 4c 89 f7          	or     %cl,-0x9(%rcx,%rcx,4)
   4:	e8 02 e9 69 00       	callq  0x69e90b
   9:	f6 84 24 81 00 00 00 	testb  $0x2,0x81(%rsp)
  10:	02
  11:	0f 85 13 02 00 00    	jne    0x22a
  17:	41 f7 c4 00 02 00 00 	test   $0x200,%r12d
  1e:	74 01                	je     0x21
  20:	fb                   	sti
  21:	48 c7 44 24 40 0e 36 	movq   $0x45e0360e,0x40(%rsp)
  28:	e0 45
* 2a:	4b c7 04 2f 00 00 00 	movq   $0x0,(%r15,%r13,1) <-- trapping instruction
  31:	00
  32:	43 c7 44 2f 09 00 00 	movl   $0x0,0x9(%r15,%r13,1)
  39:	00 00
  3b:	43                   	rex.XB
  3c:	c7                   	.byte 0xc7
  3d:	44 2f                	rex.R (bad)
  3f:	11                   	.byte 0x11