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Kernel panic (exclusive sleep mutex ath0)

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Lars Engels

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Apr 30, 2008, 12:34:08 PM4/30/08
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Since the vaps import I get the following kernel panic upon inserting an
Atheros-based PCCard:
http://bsd-geek.de/FreeBSD/ifconfig_panic.png

Sorry for the very bad quality. I hate those mirror-like notebook
displays...

The sources are from yesterday, rc.conf looks like this:
wlans_ath0=wlan0
ifconfig_wlan0="WPA DHCP"


Lars

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Andrew Thompson

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Apr 30, 2008, 12:56:51 PM4/30/08
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On Wed, Apr 30, 2008 at 06:32:09PM +0200, Lars Engels wrote:
> Since the vaps import I get the following kernel panic upon inserting an
> Atheros-based PCCard:
> http://bsd-geek.de/FreeBSD/ifconfig_panic.png
>
> Sorry for the very bad quality. I hate those mirror-like notebook
> displays...
>
> The sources are from yesterday, rc.conf looks like this:
> wlans_ath0=wlan0
> ifconfig_wlan0="WPA DHCP"

I dont see how this can happen as the softc lock is dropped before the
copyout. Also, this ioctl isnt commonly called, are your sources in sync
and do you have any local changes to that file?


Andrew
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Sam Leffler

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Apr 30, 2008, 12:57:55 PM4/30/08
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Lars Engels wrote:
> Since the vaps import I get the following kernel panic upon inserting an
> Atheros-based PCCard:
> http://bsd-geek.de/FreeBSD/ifconfig_panic.png
>
> Sorry for the very bad quality. I hate those mirror-like notebook
> displays...
>
> The sources are from yesterday, rc.conf looks like this:
> wlans_ath0=wlan0
> ifconfig_wlan0="WPA DHCP"
>
>
Are there pre-vap entries in your rc.conf? Nothing should be issuing an
ioctl to ath0 so I don't see how this stack trace can happen.

Sam

Lars Engels

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Apr 30, 2008, 1:12:29 PM4/30/08
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On Wed, Apr 30, 2008 at 09:55:03AM -0700, Sam Leffler wrote:
> Lars Engels wrote:
> >Since the vaps import I get the following kernel panic upon inserting an
> >Atheros-based PCCard:
> >http://bsd-geek.de/FreeBSD/ifconfig_panic.png
> >
> >Sorry for the very bad quality. I hate those mirror-like notebook
> >displays...
> >
> >The sources are from yesterday, rc.conf looks like this:

> >wlans_ath0=3Dwlan0
> >ifconfig_wlan0=3D"WPA DHCP"
> >
> > =20


> Are there pre-vap entries in your rc.conf? Nothing should be issuing
> an ioctl to ath0 so I don't see how this stack trace can happen.

No, there aren't any pre-vap entries.
Attached you find my rc.conf, dmesg output and I managed to get a proper
kgdb output of the panic.

I don't know if that could be related, I need to change the IRQ settings
for the cardbus to get my card recognized. So I have this in /etc/rc:
pciconf -wb pci0:0:30:0 0x1a 8

When I am fast enough and insert the card shortly after the partitions
are mounted, everything runs normally, wpa_supplicant gets started and I
get connected to the wireless net.

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Lars Engels

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Apr 30, 2008, 1:14:36 PM4/30/08
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On Thu, May 01, 2008 at 04:54:52AM +1200, Andrew Thompson wrote:


> On Wed, Apr 30, 2008 at 06:32:09PM +0200, Lars Engels wrote:
> > Since the vaps import I get the following kernel panic upon inserting an
> > Atheros-based PCCard:
> > http://bsd-geek.de/FreeBSD/ifconfig_panic.png

> >=20


> > Sorry for the very bad quality. I hate those mirror-like notebook
> > displays...

> >=20


> > The sources are from yesterday, rc.conf looks like this:
> > wlans_ath0=3Dwlan0
> > ifconfig_wlan0=3D"WPA DHCP"
>=20

> I dont see how this can happen as the softc lock is dropped before the
> copyout. Also, this ioctl isnt commonly called, are your sources in sync
> and do you have any local changes to that file?


Yesterday, I did a complete buildworld, kernel && installworld run
without any local changes.=20

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Lars Engels

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Apr 30, 2008, 1:24:17 PM4/30/08
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On Wed, Apr 30, 2008 at 07:10:36PM +0200, Lars Engels wrote:
> On Wed, Apr 30, 2008 at 09:55:03AM -0700, Sam Leffler wrote:

> > Lars Engels wrote:
> > >Since the vaps import I get the following kernel panic upon inserting =


an
> > >Atheros-based PCCard:
> > >http://bsd-geek.de/FreeBSD/ifconfig_panic.png
> > >

> > >Sorry for the very bad quality. I hate those mirror-like notebook
> > >displays...
> > >

> > >The sources are from yesterday, rc.conf looks like this:
> > >wlans_ath0=3Dwlan0
> > >ifconfig_wlan0=3D"WPA DHCP"
> > >
> > > =20

> > Are there pre-vap entries in your rc.conf? Nothing should be issuing
> > an ioctl to ath0 so I don't see how this stack trace can happen.

>=20


> No, there aren't any pre-vap entries.
> Attached you find my rc.conf, dmesg output and I managed to get a proper
> kgdb output of the panic.

>=20


> I don't know if that could be related, I need to change the IRQ settings
> for the cardbus to get my card recognized. So I have this in /etc/rc:
> pciconf -wb pci0:0:30:0 0x1a 8

>=20


> When I am fast enough and insert the card shortly after the partitions
> are mounted, everything runs normally, wpa_supplicant gets started and I
> get connected to the wireless net.

The attachments seem to have been stripped.
You can access them here:

http://bsd-geek.de/FreeBSD/dmesg
http://bsd-geek.de/FreeBSD/rc.conf
http://bsd-geek.de/FreeBSD/kgdb.out


--=20
Lars Engels
E-Mail: lars....@0x20.net =09

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