------------[ cut here ]------------
WARNING: CPU: 1 PID: 1078 at mm/khugepaged.c:1643 collapse_file+0x1ea8/0x3150 mm/khugepaged.c:1660
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 1078 Comm: khugepaged Not tainted 5.4.0-rc4+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x113/0x167 lib/dump_stack.c:113
 panic+0x22a/0x4e3 kernel/panic.c:221
 __warn.cold.11+0x25/0x30 kernel/panic.c:582
 report_bug+0x1b0/0x270 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:collapse_file+0x1ea8/0x3150 mm/khugepaged.c:1643
Code: ff e8 7c f5 61 ff e9 fc f4 ff ff 48 8b b5 50 fe ff ff 31 c9 ba 01 00 00 00 48 8b bd 80 fe ff ff e8 4d d3 ef ff e9 cc f2 ff ff <0f> 0b 48 8b bb 20 ff ff ff c7 85 40 fe ff ff 00 00 00 00 e9 39 eb
RSP: 0018:ffff8880a7e67aa8 EFLAGS: 00010202
RAX: 01fffc000000201f RBX: ffff8880a7e67c78 RCX: ffffffff819e5670
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea00023f2100
RBP: ffff8880a7e67ca0 R08: fffff9400047e421 R09: fffff9400047e421
R10: fffff9400047e420 R11: ffffea00023f2107 R12: ffffea00023f2100
R13: ffffea00023f2100 R14: dffffc0000000000 R15: ffffea0002078000
 khugepaged_scan_file mm/khugepaged.c:1881 [inline]
 khugepaged_scan_mm_slot mm/khugepaged.c:1979 [inline]
 khugepaged_do_scan mm/khugepaged.c:2063 [inline]
 khugepaged+0x2134/0x3440 mm/khugepaged.c:2108
 kthread+0x331/0x3f0 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..