Re: iwn(4) crashing when wlan device is brought up, CA-N-6200

Hi!

Oh! Please file a PR for this. This is two problems:

* the NIC isn't being setup fully correctly - I'll see if i have an
Intel 6200 in my pile-o-nics;
* .. and the re-initialise path is slightly broken it seems and it's
panicing. :)

Thanks!


-adrian


On 26 November 2014 at 09:02, Felix Palmen <felix_at_palmen-it.de> wrote:
> Hi all,
>
> I just bought a Centrino Advanced N-6200 mini-pcie card because it should be
> supported by iwn(4) -- unfortunately it leads to a kernel panic the instant I
> try to do
>
> # ifconfig wlan0 up
>
> The creation of wlan0 on top of iwn0 works. Here are the (I hope) most
> relevant exerpts from core.txt:
>
> FreeBSD photon.home.palmen-it.de 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r275075:
> Wed Nov 26 11:06:23 CET 2014     root_at_photon.home.palmen-
> it.de:/usr/obj/usr/src/sys/NODEBUG  amd64
>
> dmesg:
> [...]
> iwn0: <Intel Centrino Advanced-N 6200> mem 0xf0200000-0xf0201fff at device 0.0
> on pci1
> wlan0: Ethernet address: 00:27:c1:03:a0:89
> iwn0: iwn_read_firmware: ucode rev=0x09dd0401
> iwn0: iwn_intr: fatal firmware error
> iwn_fatal_intr: bad firmware error log address 0x00000000
> iwn0: iwn_panicked: controller panicked, iv_state = 0; resetting...
> iwn0: iwn_read_firmware: ucode rev=0x09dd0401
> iwn0: iwn_hw_init: timeout waiting for adapter to initialize, error 35
> iwn0: iwn_init_locked: could not initialize hardware, error 35
> iwn0: iwn5000_post_alive: could not configure WiMAX coexistence, error 35
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address   = 0xffffffffffffffe0
> fault code              = supervisor write data, page not present
> instruction pointer     = 0x20:0xffffffff809a300a
> stack pointer           = 0x28:0xfffffe0107cdda70
> frame pointer           = 0x28:0xfffffe0107cddaa0
> 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         = 0 (iwn0 net80211 taskq)
> trap number             = 12
>
> stacktrace:
> (kgdb) #0  doadump (textdump=<value optimized out>) at pcpu.h:219
> #1  0xffffffff80962918 in kern_reboot (howto=260)
>     at /usr/src/sys/kern/kern_shutdown.c:447
> #2  0xffffffff80962e40 in panic (fmt=<value optimized out>)
>     at /usr/src/sys/kern/kern_shutdown.c:746
> #3  0xffffffff80dae65f in trap_fatal (frame=<value optimized out>,
>     eva=<value optimized out>) at /usr/src/sys/amd64/amd64/trap.c:866
> #4  0xffffffff80dae9ac in trap_pfault (frame=0xfffffe0107cdd9c0,
>     usermode=<value optimized out>) at /usr/src/sys/amd64/amd64/trap.c:677
> #5  0xffffffff80dadfce in trap (frame=0xfffffe0107cdd9c0)
>     at /usr/src/sys/amd64/amd64/trap.c:426
> #6  0xffffffff80d90342 in calltrap ()
>     at /usr/src/sys/amd64/amd64/exception.S:231
> #7  0xffffffff809a300a in firmware_put (p=0x0, flags=1)
>     at /usr/src/sys/kern/subr_firmware.c:367
> #8  0xffffffff82638c58 in iwn_init_locked (sc=0xfffffe0002599000)
>     at /usr/src/sys/modules/iwn/../../dev/iwn/if_iwn.c:8646
> #9  0xffffffff82633e3c in iwn_ioctl (ifp=<value optimized out>,
>     cmd=<value optimized out>, data=<value optimized out>)
>     at /usr/src/sys/modules/iwn/../../dev/iwn/if_iwn.c:4924
> #10 0xffffffff809b4975 in taskqueue_run_locked (queue=0xfffff80005efe900)
>     at /usr/src/sys/kern/subr_taskqueue.c:356
> #11 0xffffffff809b5788 in taskqueue_thread_loop (arg=<value optimized out>)
>     at /usr/src/sys/kern/subr_taskqueue.c:623
> #12 0xffffffff8092aa8a in fork_exit (
>     callout=0xffffffff809b56c0 <taskqueue_thread_loop>,
>     arg=0xfffffe0001de70f0, frame=0xfffffe0107cddc00)
>     at /usr/src/sys/kern/kern_fork.c:977
> #13 0xffffffff80d9087e in fork_trampoline ()
>     at /usr/src/sys/amd64/amd64/exception.S:605
> #14 0x0000000000000000 in ?? ()
>
> I pasted the complete core.txt here: http://pastebin.com/KipkYx1y
>
> Best regards,
> Felix
>
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