Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x378 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff81396a4c stack pointer = 0x28:0xfffffe005169f9a0 frame pointer = 0x28:0xfffffe005169f9f0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 12 (irq31: virtio_pci1) trap number = 12 panic: page fault cpuid = 0 time = 1619005153 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe005169f600 vpanic() at vpanic+0x1c7/frame 0xfffffe005169f660 panic() at panic+0x43/frame 0xfffffe005169f6c0 trap_fatal() at trap_fatal+0x4cd/frame 0xfffffe005169f740 trap_pfault() at trap_pfault+0xd4/frame 0xfffffe005169f7b0 trap() at trap+0x41d/frame 0xfffffe005169f8d0 calltrap() at calltrap+0x8/frame 0xfffffe005169f8d0 --- trap 0xc, rip = 0xffffffff81396a4c, rsp = 0xfffffe005169f9a0, rbp = 0xfffffe005169f9f0 --- tcp_lro_flush_all() at tcp_lro_flush_all+0x1c/frame 0xfffffe005169f9f0 vtnet_rxq_eof() at vtnet_rxq_eof+0x1022/frame 0xfffffe005169fad0 vtnet_rx_vq_process() at vtnet_rx_vq_process+0xe1/frame 0xfffffe005169fb10 ithread_loop() at ithread_loop+0x33f/frame 0xfffffe005169fbb0 fork_exit() at fork_exit+0xb3/frame 0xfffffe005169fbf0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe005169fbf0 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic [ thread pid 12 tid 100052 ] Stopped at kdb_enter+0x67: movq $0,0x163b9fe(%rip) db>