[Bug 263783] USB MBIM: Support for LTE/4G USB modems (MBIM)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263783

--- Comment #48 from mike@sentex.net ---
(In reply to Pierre Pronchery from comment #47)


# umbctl umb0 apn m2minternet.apn
# umbctl umb0 
umb0: state open, mode automatic, registration home network
        provider "ROGERS", dataclass GPRS, signal #-999
        phone number "", roaming "" (denied)
        APN "m2minternet.apn", TX 0, RX 0
        firmware "SWI9X30C_02.20.03.00", hardware "MC7455"

# ifconfig umb0 up
umb0: state up, mode automatic, registration home network
        provider "ROGERS", dataclass GPRS, signal #-999
        phone number "", roaming "" (denied)
        APN "m2minternet.apn", TX 50000000, RX 300000000
        firmware "SWI9X30C_02.20.03.00", hardware "MC7455"

# ifconfig umb0 
umb0: flags=1008851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0
mtu 1460
        options=0
        inet 10.155.111.104 --> 10.155.111.105 netmask 0xfffffff0
        media: <unknown type>
        status: 
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

# route add 8.8.8.8/32 10.155.111.105
add net 8.8.8.8: gateway 10.155.111.105

# ping 8.8.8.8


 Fatal trap 12: page fault while in kernel mode
 cpuid = 3; apic id = 06
 fault virtual address  = 0x28
 fault code             = supervisor read data, page not present
 instruction pointer    = 0x20:0xffffffff80c85434
 stack pointer          = 0x28:0xfffffe00834dfd40
 frame pointer          = 0x28:0xfffffe00834dfd80
 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                = 15 (usbus0)
 rdi: 0000000000000001 rsi: 0000000000000000 rdx: fffff80059ab0b00
 rcx: 0000000000000000  r8: 0000000000000800  r9: 0000000000000000
 rax: 0000000000000000 rbx: fffff80001a80000 rbp: fffffe00834dfd80
 r10: 0000000000000800 r11: 0000000000000000 r12: 0000000000000001
 r13: fffffe00834dfe00 r14: fffff80059ab0b00 r15: 0000000000000000
 trap number            = 12
 panic: page fault
 cpuid = 3
 time = 1734013310
 KDB: stack backtrace:
 #0 0xffffffff80b8d16d at kdb_backtrace+0x5d
 #1 0xffffffff80b3f151 at vpanic+0x161
 #2 0xffffffff80b3efe3 at panic+0x43
 #3 0xffffffff8102ca7b at trap_fatal+0x40b
 #4 0xffffffff8102cac6 at trap_pfault+0x46
 #5 0xffffffff810035b8 at calltrap+0x8
 #6 0xffffffff8316c0b4 at umb_input+0x44
 #7 0xffffffff83168edf at umb_rxeof+0x44f
 #8 0xffffffff80952626 at usbd_callback_wrapper+0x8a6
 #9 0xffffffff80953c76 at usb_command_wrapper+0x96
 #10 0xffffffff809528d9 at usb_callback_proc+0xb9
 #11 0xffffffff8094d45e at usb_process+0xfe
 #12 0xffffffff80af8311 at fork_exit+0x81

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