device bond_slave_1 left promiscuous mode
bond0 (unregistering): (slave batadv0): Releasing backup interface
device batadv0 left promiscuous mode
bond0 (unregistering): Released all slaves
------------[ cut here ]------------
remove_proc_entry: removing non-empty directory 'net/bonding', leaking at least 'bond0'
WARNING: CPU: 0 PID: 19827 at fs/proc/generic.c:682 remove_proc_entry+0x367/0x410 fs/proc/generic.c:682
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 19827 Comm: kworker/u4:0 Not tainted 5.3.0+ #0
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+0x2dc/0x755 kernel/panic.c:219
 __warn.cold+0x20/0x4c kernel/panic.c:576
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:remove_proc_entry+0x367/0x410 fs/proc/generic.c:682
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 11 99 87 48 c7 c7 c0 10 99 87 e8 f1 ca 6a ff <0f> 0b e9 4b fe ff ff e8 bd ab d3 ff e9 b5 fd ff ff e8 73 ac d3 ff
RSP: 0018:ffff888096ad7a80 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 1ffff11012d5af52 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c6326 RDI: ffffed1012d5af42
RBP: ffff888096ad7b30 R08: ffff88809af44100 R09: ffffed1015d060d1
R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffff8880611fd540
R13: ffff888087f73700 R14: ffff8880611fd5f0 R15: ffff88808f2a14b8
 bond_destroy_proc_dir+0x87/0xdd drivers/net/bonding/bond_procfs.c:309
 bond_net_exit+0x2be/0x430 drivers/net/bonding/bond_main.c:4867
 ops_exit_list.isra.0+0xaa/0x150 net/core/net_namespace.c:172
 cleanup_net+0x4e2/0xa60 net/core/net_namespace.c:594
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..