------------[ cut here ]------------ kernel BUG at arch/x86/mm/physaddr.c:27! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 15726 Comm: kworker/0:0 Not tainted 5.1.0+ #4 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:ffff888063927bd8 EFLAGS: 00010093 RAX: ffff8880998b4680 RBX: 0000000000000000 RCX: ffffffff8132f1f2 RDX: 0000000000000000 RSI: ffffffff8132f253 RDI: 0000000000000006 RBP: ffff888063927bf0 R08: ffff8880998b4680 R09: ffffed100c724f80 R10: ffffed100c724f7f R11: 0000000000000003 R12: 0000778000000000 R13: 0000000080000000 R14: ffff88808b47a500 R15: ffff88808b47a500 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa5fbabb000 CR3: 000000006c9d7000 CR4: 00000000001406f0 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 425da87c7fa3d489 ]--- 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:ffff888063927bd8 EFLAGS: 00010093 RAX: ffff8880998b4680 RBX: 0000000000000000 RCX: ffffffff8132f1f2 RDX: 0000000000000000 RSI: ffffffff8132f253 RDI: 0000000000000006 RBP: ffff888063927bf0 R08: ffff8880998b4680 R09: ffffed100c724f80 R10: ffffed100c724f7f R11: 0000000000000003 R12: 0000778000000000 R13: 0000000080000000 R14: ffff88808b47a500 R15: ffff88808b47a500 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa5fbabb000 CR3: 000000006c9d7000 CR4: 00000000001406f0