Copying ffff880103a2d000 (page ffffea000615d0e0, shadow ffffea000630ef40) to ffff88021fe0b000 (page ffffea000cbf4420, shadow 0000000000000000)
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan.c:1014!
invalid opcode: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 802 Comm: kcompactd0 Not tainted 4.17.0+ #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_copy_page_meta+0x1c9/0x1e0 mm/kmsan/kmsan.c:1012
RSP: 0018:ffff8801d840f750 EFLAGS: 00010096
RAX: 000000000000008e RBX: ffffea000cbf4420 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88021fc36eec
RBP: ffff8801d840f790 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff86575810 R12: 0000000000000246
R13: ffff880103a2d000 R14: ffffea000615d0e0 R15: ffff8801d80dd7c0
FS:  0000000000000000(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020143532 CR3: 0000000012c12000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 copy_highpage include/linux/highmem.h:253 [inline]
 migrate_page_copy+0x2bb/0x10b0 mm/migrate.c:734
 migrate_page mm/migrate.c:764 [inline]
 move_to_new_page+0x9a6/0x10e0 mm/migrate.c:929
 __unmap_and_move mm/migrate.c:1100 [inline]
 unmap_and_move mm/migrate.c:1177 [inline]
 migrate_pages+0x26d4/0x4110 mm/migrate.c:1398
 compact_zone+0x1e93/0x3a50 mm/compaction.c:1622
 kcompactd_do_work mm/compaction.c:1994 [inline]
 kcompactd+0xfd0/0x1de0 mm/compaction.c:2084
 kthread+0x4db/0x6c0 kernel/kthread.c:241
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:412
Code: 01 d6 49 01 d8 49 c1 e8 05 4c 0f af c0 49 01 d0 48 c7 c7 43 37 97 8a 31 c0 4c 89 f2 49 89 d9 ff 73 40 e8 cb 28 80 ff 48 83 c4 08 <0f> 0b 0f 1f 44 00 00 eb fe 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe 
RIP: kmsan_copy_page_meta+0x1c9/0x1e0 mm/kmsan/kmsan.c:1012 RSP: ffff8801d840f750
---[ end trace 726498c3b0cac155 ]---