------------[ cut here ]------------
kernel BUG at arch/x86/mm/physaddr.c:27!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2992 Comm: kworker/1:2 Not tainted 5.1.0+ #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events cache_reap
RIP: 0010:__phys_addr+0xb3/0x120 arch/x86/mm/physaddr.c:27
Code: 08 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 76 98 3d 00 48 85 db 75 0f e8 cc 96 3d 00 4c 89 e0 5b 41 5c 41 5d 5d c3 e8 bd 96 3d 00 <0f> 0b e8 b6 96 3d 00 48 c7 c0 10 50 87 88 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff88809e83fbd8 EFLAGS: 00010093
RAX: ffff88809eff0180 RBX: 0000000000000000 RCX: ffffffff8132f1f2
RDX: 0000000000000000 RSI: ffffffff8132f253 RDI: 0000000000000006
RBP: ffff88809e83fbf0 R08: ffff88809eff0180 R09: ffffed1013d07f80
R10: ffffed1013d07f7f R11: 0000000000000003 R12: 0000778000000000
R13: 0000000080000000 R14: ffff8880a4373500 R15: ffffea0002824fc8
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000208002ff CR3: 00000000a85fb000 CR4: 00000000001406e0
Call Trace:
 virt_to_head_page include/linux/mm.h:686 [inline]
 free_block+0xa8/0x250 mm/slab.c:3380
 drain_array_locked+0x36/0x90 mm/slab.c:2167
 drain_array+0x8c/0xb0 mm/slab.c:3991
 cache_reap+0xf4/0x280 mm/slab.c:4032
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2263
 worker_thread+0x98/0xe40 kernel/workqueue.c:2409
 kthread+0x357/0x430 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 332b200258c70c09 ]---
RIP: 0010:__phys_addr+0xb3/0x120 arch/x86/mm/physaddr.c:27
Code: 08 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 76 98 3d 00 48 85 db 75 0f e8 cc 96 3d 00 4c 89 e0 5b 41 5c 41 5d 5d c3 e8 bd 96 3d 00 <0f> 0b e8 b6 96 3d 00 48 c7 c0 10 50 87 88 48 ba 00 00 00 00 00 fc
RSP: 0018:ffff88809e83fbd8 EFLAGS: 00010093
RAX: ffff88809eff0180 RBX: 0000000000000000 RCX: ffffffff8132f1f2
RDX: 0000000000000000 RSI: ffffffff8132f253 RDI: 0000000000000006
RBP: ffff88809e83fbf0 R08: ffff88809eff0180 R09: ffffed1013d07f80
R10: ffffed1013d07f7f R11: 0000000000000003 R12: 0000778000000000
R13: 0000000080000000 R14: ffff8880a4373500 R15: ffffea0002824fc8
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000208002ff CR3: 00000000a85fb000 CR4: 00000000001406e0