divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 314 Comm: syz-executor.5 Not tainted 5.4.147-syzkaller-00040-g2138e7367558 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_scan_count+0x42d/0x1490 mm/vmscan.c:2515
Code: 49 be 00 00 00 00 00 fc ff df 4c 89 e7 48 89 de e8 a8 ae e0 ff 49 39 dc 4c 0f 46 e3 48 8b 4c 24 20 48 0f af d9 48 89 d8 31 d2 <49> f7 f4 49 89 cc 49 29 c4 bf 20 00 00 00 4c 89 e6 e8 ad b0 e0 ff
RSP: 0000:ffff8881ad3573a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881ad3574b0 R08: ffffffff818022b8 R09: ffffed103d677424
R10: ffffed103d677424 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881ad357748 R14: dffffc0000000000 R15: 000000000000000f
FS:  0000555557221400(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0daba0bd80 CR3: 00000001ad340000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 shrink_node_memcg+0x158/0x1000 mm/vmscan.c:2588
 shrink_node+0x37a/0x12c0 mm/vmscan.c:2831
 shrink_zones+0x406/0x8b0 mm/vmscan.c:3048
 do_try_to_free_pages+0x20b/0x980 mm/vmscan.c:3106
 try_to_free_pages+0x548/0xce0 mm/vmscan.c:3320
 __perform_reclaim mm/page_alloc.c:4223 [inline]
 __alloc_pages_direct_reclaim mm/page_alloc.c:4244 [inline]
 __alloc_pages_slowpath+0xfec/0x1b70 mm/page_alloc.c:4661
 __alloc_pages_nodemask+0x42a/0x740 mm/page_alloc.c:4875
 __alloc_pages include/linux/gfp.h:503 [inline]
 __alloc_pages_node include/linux/gfp.h:516 [inline]
 alloc_pages_node include/linux/gfp.h:530 [inline]
 __page_cache_alloc include/linux/pagemap.h:218 [inline]
 pagecache_get_page+0x538/0x8c0 mm/filemap.c:1690
 filemap_fault+0x1570/0x1930 mm/filemap.c:2529
 ext4_filemap_fault+0x7b/0x90 fs/ext4/inode.c:6416
 __do_fault mm/memory.c:3237 [inline]
 do_read_fault mm/memory.c:3637 [inline]
 do_fault mm/memory.c:3766 [inline]
 handle_pte_fault mm/memory.c:3997 [inline]
 __handle_mm_fault mm/memory.c:4121 [inline]
 handle_mm_fault+0x2721/0x3f30 mm/memory.c:4158
 do_user_addr_fault+0x4a0/0xb40 arch/x86/mm/fault.c:1469
 page_fault+0x2f/0x40 arch/x86/entry/entry_64.S:1203
RIP: 0033:0x7fb72e9dad1a
Code: Bad RIP value.
RSP: 002b:00007ffd6df31af0 EFLAGS: 00010206
RAX: 0000000000000005 RBX: 0000000000000000 RCX: 0000000000000440
RDX: 0000000000000020 RSI: 00007ffd6df32008 RDI: 00007ffd6df33440
RBP: 00007ffd6df32040 R08: 00000000ffffffff R09: 0000000000000000
R10: 00007ffd6df33440 R11: 0000000000000000 R12: 00007ffd6df32060
R13: 00007fb72ea750dc R14: 00007ffd6df321e0 R15: 0000000000000073
Modules linked in:
---[ end trace 51c96466c2d3c2a9 ]---
RIP: 0010:get_scan_count+0x42d/0x1490 mm/vmscan.c:2515
Code: 49 be 00 00 00 00 00 fc ff df 4c 89 e7 48 89 de e8 a8 ae e0 ff 49 39 dc 4c 0f 46 e3 48 8b 4c 24 20 48 0f af d9 48 89 d8 31 d2 <49> f7 f4 49 89 cc 49 29 c4 bf 20 00 00 00 4c 89 e6 e8 ad b0 e0 ff
RSP: 0000:ffff8881ad3573a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881ad3574b0 R08: ffffffff818022b8 R09: ffffed103d677424
R10: ffffed103d677424 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881ad357748 R14: dffffc0000000000 R15: 000000000000000f
FS:  0000555557221400(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd1c65d7abf CR3: 00000001ad340000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
   7:	fc ff df
   a:	4c 89 e7             	mov    %r12,%rdi
   d:	48 89 de             	mov    %rbx,%rsi
  10:	e8 a8 ae e0 ff       	callq  0xffe0aebd
  15:	49 39 dc             	cmp    %rbx,%r12
  18:	4c 0f 46 e3          	cmovbe %rbx,%r12
  1c:	48 8b 4c 24 20       	mov    0x20(%rsp),%rcx
  21:	48 0f af d9          	imul   %rcx,%rbx
  25:	48 89 d8             	mov    %rbx,%rax
  28:	31 d2                	xor    %edx,%edx
* 2a:	49 f7 f4             	div    %r12 <-- trapping instruction
  2d:	49 89 cc             	mov    %rcx,%r12
  30:	49 29 c4             	sub    %rax,%r12
  33:	bf 20 00 00 00       	mov    $0x20,%edi
  38:	4c 89 e6             	mov    %r12,%rsi
  3b:	e8 ad b0 e0 ff       	callq  0xffe0b0ed