panic: tcp_do_segment: sent too much: 1608>1396 cpuid = 0 time = 30 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056b9bbb0 kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056b9bd10 vpanic() at vpanic+0x257/frame 0xfffffe0056b9bed0 panic() at panic+0xb5/frame 0xfffffe0056b9bf90 tcp_do_segment() at tcp_do_segment+0x8ccf/frame 0xfffffe0056b9c270 tcp_input_with_port() at tcp_input_with_port+0x2214/frame 0xfffffe0056b9c530 tcp_input() at tcp_input+0x1f/frame 0xfffffe0056b9c550 ip_input() at ip_input+0xaa2/frame 0xfffffe0056b9c670 netisr_dispatch_src() at netisr_dispatch_src+0x219/frame 0xfffffe0056b9c750 ether_demux() at ether_demux+0x447/frame 0xfffffe0056b9c810 ether_nh_input() at ether_nh_input+0xb61/frame 0xfffffe0056b9c8f0 netisr_dispatch_src() at netisr_dispatch_src+0x219/frame 0xfffffe0056b9c9d0 ether_input() at ether_input+0x1db/frame 0xfffffe0056b9cab0 vtnet_rxq_eof() at vtnet_rxq_eof+0x16d2/frame 0xfffffe0056b9ccd0 vtnet_rx_vq_process() at vtnet_rx_vq_process+0x189/frame 0xfffffe0056b9cd90 ithread_loop() at ithread_loop+0x4ec/frame 0xfffffe0056b9cef0 fork_exit() at fork_exit+0xcc/frame 0xfffffe0056b9cf30 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0056b9cf30 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic [ thread pid 12 tid 100055 ] Stopped at kdb_enter+0x6e: movq $0,0x25bbb97(%rip) db> db> set $lines = 0 db>