Em Wed, 9 Nov 2016 17:03:52 -0800
VDR User <user.vdr@xxxxxxxxx> escreveu:
> >> (gdb) l *module_put+0x67
> >> 0xc10a4b87 is in module_put (kernel/module.c:1108).
> >> 1103 int ret;
> >> 1104
> >> 1105 if (module) {
> >> 1106 preempt_disable();
> >> 1107 ret = atomic_dec_if_positive(&module->refcnt);
> >> 1108 WARN_ON(ret < 0); /* Failed to put refcount */
> >> 1109 trace_module_put(module, _RET_IP_);
> >> 1110 preempt_enable();
> >> 1111 }
> >> 1112 }
> >
> > OK, I guess we've made progress. Please try the enclosed patch.
> >
> > Regards,
> > Mauro
> >
> > [media] gp8psk: Fix DVB frontend attach
> >
> > it should be calling module_get() at attach, as otherwise
> > module_put() will crash.
> >
> > Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
>
> I think you forgot the patch. :)
commit 0c979a12309af49894bb1dc60e747c3cd53fa888
Author: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Date: Wed Nov 9 15:33:17 2016 -0200
[media] gp8psk: Fix DVB frontend attach
it should be calling module_get() at attach, as otherwise
module_put() will crash.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
diff --git a/drivers/media/usb/dvb-usb/gp8psk.c b/drivers/media/usb/dvb-usb/gp8psk.c
index cede0d8b0f8a..24eb6c6c8e24 100644
--- a/drivers/media/usb/dvb-usb/gp8psk.c
+++ b/drivers/media/usb/dvb-usb/gp8psk.c
@@ -250,7 +250,7 @@ static int gp8psk_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
static int gp8psk_frontend_attach(struct dvb_usb_adapter *adap)
{
- adap->fe_adap[0].fe = gp8psk_fe_attach(adap->dev);
+ adap->fe_adap[0].fe = dvb_attach(gp8psk_fe_attach, adap->dev);
return 0;
}
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