Re: Panic with usb serial

[Kostik Belousov]

On Tue, Apr 01, 2008 at 09:55:19AM +0100, Vince Hoffman wrote:
> Kostik Belousov wrote:
> > On Mon, Mar 31, 2008 at 12:13:31PM +0100, Vince Hoffman wrote:
> >> Kostik Belousov wrote:
> 
> > Compile the ddb into the kernel (instructions are provided at the same
> > web page) and post the output of the console on the panic
> 
> I tried this but other than the fact I can drop into ddb and step though
> stuff I'm not sure what I can do with it. Since I cant (obviously) get a
> serial console on my laptop I have done it the other way and taken a
> picture of the console on panic. When I have more time I'll carry on
> reading up on ddb but I think I have a steep learning curve since my
> previous looks at programing stopped at 'hello world':)
> Panic console at:
> http://unsane.co.uk/~jhary/freebsd/IMAGE_119.jpg

Thanks, this is enough. Two chunks were missed from the rev. 1.210.
Please, try the patch below.

diff --git a/sys/kern/kern_conf.c b/sys/kern/kern_conf.c
index 843498e..7e6e048 100644
--- a/sys/kern/kern_conf.c
+++ b/sys/kern/kern_conf.c
@@ -402,8 +402,7 @@ giant_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int 
fflag, struct thread
        if (dsw == NULL)
                return (ENXIO);
        mtx_lock(&Giant);
-       retval = dev->si_devsw->d_gianttrick->
-           d_ioctl(dev, cmd, data, fflag, td);
+       retval = dsw->d_gianttrick->d_ioctl(dev, cmd, data, fflag, td);
        mtx_unlock(&Giant);
        dev_relthread(dev);
        return (retval);
@@ -419,8 +418,7 @@ giant_read(struct cdev *dev, struct uio *uio, int ioflag)
        if (dsw == NULL)
                return (ENXIO);
        mtx_lock(&Giant);
-       retval = dev->si_devsw->d_gianttrick->
-           d_read(dev, uio, ioflag);
+       retval = dsw->d_gianttrick->d_read(dev, uio, ioflag);
        mtx_unlock(&Giant);
        dev_relthread(dev);
        return (retval);

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