HEAD r296148 panic: vtnet_txq_mq_start -> drbr_enqueue -> already enqueue

[Bryan Drewery]

Thanks!

On 2/29/2016 7:20 PM, Sepherosa Ziehau wrote:
> I believe r296178 fixes this panic.  Please try it.
> 
> Thanks,
> sephe
> 
> On Tue, Mar 1, 2016 at 11:06 AM, Bryan Drewery <bdrewery at freebsd.org> wrote:
>> Hit this in bhyve:
>>
>>> panic: buf=0xfffff8002df9fd00 already enqueue at 652 prod=653 cons=652
>>> cpuid = 0
>>> KDB: stack backtrace:
>>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00b5d46150
>>> vpanic() at vpanic+0x182/frame 0xfffffe00b5d461d0
>>> panic() at panic+0x43/frame 0xfffffe00b5d46230
>>> drbr_enqueue() at drbr_enqueue+0x54/frame 0xfffffe00b5d46250
>>> vtnet_txq_mq_start() at vtnet_txq_mq_start+0x95/frame 0xfffffe00b5d46290
>>> ether_output() at ether_output+0x56f/frame 0xfffffe00b5d46320
>>> ip_output() at ip_output+0x1437/frame 0xfffffe00b5d46460
>>> tcp_output() at tcp_output+0x1b0a/frame 0xfffffe00b5d46630
>>> tcp_do_segment() at tcp_do_segment+0x27a3/frame 0xfffffe00b5d46730
>>> tcp_input() at tcp_input+0xdb8/frame 0xfffffe00b5d46880
>>> ip_input() at ip_input+0x17d/frame 0xfffffe00b5d468e0
>>> netisr_dispatch_src() at netisr_dispatch_src+0x81/frame 0xfffffe00b5d46940
>>> ether_demux() at ether_demux+0x15e/frame 0xfffffe00b5d46970
>>> ether_nh_input() at ether_nh_input+0x344/frame 0xfffffe00b5d469b0
>>> netisr_dispatch_src() at netisr_dispatch_src+0x81/frame 0xfffffe00b5d46a10
>>> ether_input() at ether_input+0x4f/frame 0xfffffe00b5d46a40
>>> vtnet_rxq_eof() at vtnet_rxq_eof+0x823/frame 0xfffffe00b5d46af0
>>> vtnet_rx_vq_intr() at vtnet_rx_vq_intr+0x4e/frame 0xfffffe00b5d46b20
>>> intr_event_execute_handlers() at intr_event_execute_handlers+0x96/frame 0xfffffe00b5d46b60
>>> ithread_loop() at ithread_loop+0xa6/frame 0xfffffe00b5d46bb0
>>> fork_exit() at fork_exit+0x84/frame 0xfffffe00b5d46bf0
>>> fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00b5d46bf0
>>> --- trap 0, rip = 0, rsp = 0, rbp = 0 ---
>>> KDB: enter: panic
>>> [ thread pid 12 tid 100025 ]
>>> Stopped at      kdb_enter+0x3b: movq    $0,kdb_why
>>
>>
>> --
>> Regards,
>> Bryan Drewery
>>
> 
> 
> 


-- 
Regards,
Bryan Drewery

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