rdma_op 00000000f3c8ca82 conn xmit_rdma           (null)
bond0 (unregistering): Released all slaves
WARNING: CPU: 0 PID: 348 at net/core/dev.c:8122 rollback_registered_many+0xf89/0x1370 net/core/dev.c:8122
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 348 Comm: kworker/u4:3 Not tainted 5.0.0-rc4 #49
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+0x1db/0x2d0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x48 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:rollback_registered_many+0xf89/0x1370 net/core/dev.c:8122
Code: 9e 19 00 00 48 c7 c6 80 49 de 88 48 c7 c7 60 4a de 88 c6 05 3e 4b 36 04 01 e8 d3 4d 29 fb 0f 0b e9 5f f9 ff ff e8 a7 02 60 fb <0f> 0b e9 34 f9 ff ff e8 9b 02 60 fb 0f 0b e9 9d f9 ff ff e8 8f 02
RSP: 0018:ffff8880a8827430 EFLAGS: 00010293
RAX: ffff8880a8814080 RBX: ffff888055cd8b40 RCX: ffffffff8621faeb
RDX: 0000000000000000 RSI: ffffffff862201b9 RDI: 0000000000000001
RBP: ffff8880a8827620 R08: ffff8880a8814080 R09: fffffbfff14630b9
R10: fffffbfff14630b8 R11: ffffffff8a3185c7 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffffff8495f0f0 R15: ffff8880a88275f8
 unregister_netdevice_many.part.0+0x8e/0x470 net/core/dev.c:9207
 unregister_netdevice_many net/core/dev.c:9206 [inline]
 default_device_exit_batch+0x4c9/0x5f0 net/core/dev.c:9676
 ops_exit_list.isra.0+0x105/0x160 net/core/net_namespace.c:156
 cleanup_net+0x51d/0xb10 net/core/net_namespace.c:551
 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153
 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..