------------[ cut here ]------------
WARNING: CPU: 1 PID: 6761 at kernel/bpf/core.c:537 bpf_jit_free+0x23a/0x310
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 6761 Comm: kworker/1:3 Not tainted 4.14.139 #35
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events bpf_prog_free_deferred
Call Trace:
kobject: 'loop4' (ffff8880a4a4d2a0): kobject_uevent_env
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x19c lib/dump_stack.c:53
 panic+0x1f2/0x426 kernel/panic.c:182
 __warn.cold+0x2f/0x36 kernel/panic.c:546
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
kobject: 'loop4' (ffff8880a4a4d2a0): fill_kobj_path: path = '/devices/virtual/block/loop4'
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:bpf_jit_free+0x23a/0x310
RSP: 0018:ffff88805a767cf8 EFLAGS: 00010297
RAX: ffff88805a75c580 RBX: 0000000000000007 RCX: 1ffff1100b4eb9c9
RDX: 0000000000000000 RSI: ffff88805a75ce28 RDI: ffff8880871d0b50
RBP: ffff88805a767d20 R08: 00000000f1bd5397 R09: ffff88805a75ce48
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc900018e5000
R13: ffffc900018e5002 R14: ffffc900018e5018 R15: ffff8880963a0848
 bpf_prog_free_deferred+0x31/0x40 kernel/bpf/core.c:1423
 process_one_work+0x863/0x1600 kernel/workqueue.c:2114
 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
 kthread+0x319/0x430 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Kernel Offset: disabled
Rebooting in 86400 seconds..