------------[ cut here ]------------
remove_proc_entry: removing non-empty directory 'net/bonding', leaking at least 'Š'
WARNING: CPU: 1 PID: 10123 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410 fs/proc/generic.c:681
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 10123 Comm: kworker/u4:6 Not tainted 5.0.0-rc5-next-20190208 #31
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x45 kernel/panic.c:571
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:remove_proc_entry+0x367/0x410 fs/proc/generic.c:681
Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4c 49 8b 95 d0 00 00 00 48 c7 c6 40 e9 77 87 48 c7 c7 c0 e8 77 87 e8 37 7e 71 ff <0f> 0b e9 4b fe ff ff e8 8d 6b d6 ff e9 b5 fd ff ff e8 43 6c d6 ff
RSP: 0018:ffff88804c0a7a80 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 1ffff11009814f52 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815ac0a6 RDI: ffffed1009814f42
RBP: ffff88804c0a7b30 R08: ffff88809e7b4480 R09: ffffed1015d25011
R10: ffffed1015d25010 R11: ffff8880ae928087 R12: ffff888097a03980
R13: ffff888013500040 R14: ffff888097a03a30 R15: ffff88805fa3bcb8
 bond_destroy_proc_dir+0x87/0xdd drivers/net/bonding/bond_procfs.c:307
 bond_net_exit+0x2be/0x430 drivers/net/bonding/bond_main.c:4854
 ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:153
 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:551
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2267
 worker_thread+0x98/0xe40 kernel/workqueue.c:2413
 kthread+0x357/0x430 kernel/kthread.c:247
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..