Date: Fri, 11 Oct 2013 08:20:06 -0700 From: Adrian Chadd <adrian@freebsd.org> To: =?ISO-8859-1?Q?Peter_Ankerst=E5l?= <peter@pean.org> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: kern/182665: [wlan] Kernel panic when creating second wlandev. Message-ID: <CAJ-Vmo=p15yo2749%2BH3vR5NpgzbWORJnx6dEDYxZHCP_XF0SpA@mail.gmail.com> In-Reply-To: <5257A8AC.40703@pean.org> References: <201310091810.r99IA3mS098467@freefall.freebsd.org> <CAJ-VmomMsq8EnaDgkhvOM2aRagnDKsR6jrt6tsm6hr5d_9kV=g@mail.gmail.com> <193DD662-CB03-412F-A170-AD28BA67C612@pean.org> <CAJ-VmokmDnGy7wMh6AYBpu414tqDBmcuu4f=7qfBJZs7YM7qSA@mail.gmail.com> <5257A8AC.40703@pean.org>
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what's wlan0 setup as?
-a
On 11 October 2013 00:28, Peter Ankerst=E5l <peter@pean.org> wrote:
> Hi!
>
> Here is a new crash.
>
> I have wlan0 set up with ath0 as wlandev and then when I run:
>
> # ifconfig wlan1 create wlanmode hostap wlandev ath1
>
>
> the machine crashes with this message:
>
> Oct 11 09:25:00 gw syslogd: kernel boot file is /boot/kernel/kernel
> Oct 11 09:25:00 gw kernel:
> Oct 11 09:25:00 gw kernel:
> Oct 11 09:25:00 gw kernel: Fatal trap 12: page fault while in kernel mode
> Oct 11 09:25:00 gw kernel: cpuid =3D 1; apic id =3D 01
> Oct 11 09:25:00 gw kernel: fault virtual address =3D 0x0
> Oct 11 09:25:00 gw kernel: fault code =3D supervisor read, page
> not present
> Oct 11 09:25:00 gw kernel: instruction pointer =3D 0x20:0xc0800600
> Oct 11 09:25:00 gw kernel: stack pointer =3D 0x28:0xe8d879=
e0
> Oct 11 09:25:00 gw kernel: frame pointer =3D 0x28:0xe8d879=
e8
> Oct 11 09:25:00 gw kernel: wlan1: Ethernet address: b0:48:7a:d5:fe:a2
> Oct 11 09:25:00 gw kernel: code segment =3D base 0x0, limit 0xfff=
ff,
> type 0x1b
> Oct 11 09:25:00 gw kernel: =3D DPL 0, pres 1, def32 1, gran 1
> Oct 11 09:25:00 gw kernel: processor eflags =3D interrupt enabled,
> resume, IOPL =3D 0
> Oct 11 09:25:00 gw kernel: current process =3D 2968 (bsnmpd)
> Oct 11 09:25:00 gw kernel: trap number =3D 12
> Oct 11 09:25:00 gw kernel: panic: page fault
> Oct 11 09:25:00 gw kernel: cpuid =3D 1
> Oct 11 09:25:00 gw kernel: KDB: stack backtrace:
> Oct 11 09:25:00 gw kernel: #0 0xc078bfc2 at kdb_backtrace+0x52
> Oct 11 09:25:00 gw kernel: #1 0xc07567f1 at panic+0x121
> Oct 11 09:25:00 gw kernel: #2 0xc0a4ffb9 at trap_fatal+0x339
> Oct 11 09:25:00 gw kernel: #3 0xc0a5024a at trap_pfault+0x27a
> Oct 11 09:25:00 gw kernel: #4 0xc0a4fa46 at trap+0x5a6
> Oct 11 09:25:00 gw kernel: #5 0xc0a3a20c at calltrap+0x6
> Oct 11 09:25:00 gw kernel: #6 0xc083f635 at ieee80211_ioctl_getstainfo+**
> 0x55
> Oct 11 09:25:00 gw kernel: #7 0xc083b244 at ieee80211_ioctl_get80211+0x43=
4
> Oct 11 09:25:00 gw kernel: #8 0xc08650b8 at in_control+0x228
> Oct 11 09:25:00 gw kernel: #9 0xc080df53 at ifioctl+0x1943
> Oct 11 09:25:00 gw kernel: #10 0xc07a7d5c at soo_ioctl+0x30c
> Oct 11 09:25:00 gw kernel: #11 0xc07a0b4b at kern_ioctl+0x19b
> Oct 11 09:25:00 gw kernel: #12 0xc07a0969 at sys_ioctl+0xe9
> Oct 11 09:25:00 gw kernel: #13 0xc0a50823 at syscall+0x363
> Oct 11 09:25:00 gw kernel: #14 0xc0a3a271 at Xint0x80_syscall+0x21
>
>
>
> On 10/11/2013 12:31 AM, Adrian Chadd wrote:
>
>> what's the backtrace from the kernel crash?
>>
>> That's a bit odd.. :-)
>>
>>
>>
>> -adiran
>>
>>
>>
>> On 10 October 2013 11:38, Peter Ankerst=E5l <peter@pean.org
>> <mailto:peter@pean.org>> wrote:
>>
>> Sorry, had to rebuild kernel with debug symbols.
>>
>> Heres the output:
>>
>> (kgdb) list *0xc0800110
>> 0xc0800110 is in jenkins_hash32
>> (/usr/src/sys/libkern/jenkins_**hash.c:177).
>> 172 switch(length) /* all the case
>> statements fall through */
>> 173 {
>> 174 case 3 : c+=3Dk[2];
>> 175 case 2 : b+=3Dk[1];
>> 176 case 1 : a+=3Dk[0];
>> 177 final(a,b,c);
>> 178 case 0: /* case 0: nothing left to add */
>> 179 break;
>> 180 }
>> 181 /*----------------------------**--------------------------
>> report the result */
>>
>>
>> On Oct 9, 2013, at 11:18 PM, Adrian Chadd <adrian@freebsd.org
>> <mailto:adrian@freebsd.org>> wrote:
>>
>> > Hi,
>> >
>> > Is there a backtrace for this? Iv'e not seen this before.
>> >
>> >
>> > -adrian
>>
>>
>>
>>
>
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