Re: Oops with >= 2.4.0-test7 when modprobing gus module

From: Peter Steiner (p.steiner@t-online.de)
Date: Sun Sep 10 2000 - 06:31:00 EST


Guus Sliepen <guus@warande3094.warande.uu.nl> wrote:

>Whenever I modprobe the gus module the kernel gives an oops:

It seems to oops after aumix set up the soundcard and closes the
mixerdevice. The same happens here when closing kmix.

>>EIP; c486321b <[sound]sound_release+2b/84> <=====

drivers/sound/soundcard.h:

static int sound_release(struct inode *inode, struct file *file)
{
        int dev = MINOR(inode->i_rdev);

        lock_kernel();
        DEB(printk("sound_release(dev=%d)\n", dev));
        switch (dev & 0x0f) {
        case SND_DEV_CTL:

                if (mixer_devs[dev]->owner) <---

0x470 <sound_release+32>: shll $0x2,%edx
0x473 <sound_release+35>: movl $0x0,%ecx
0x478 <sound_release+40>: movl (%edx,%ecx,1),%eax
0x47b <sound_release+43>: movl (%eax),%eax <===
0x47d <sound_release+45>: testl %eax,%eax
0x47f <sound_release+47>: je 0x4ce <sound_release+126>

In the moment of the oops edx was 0x40 so dev=16. This is /dev/mixer1.
Exactly this happens on my system, too.

Peter

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