[PATCH 2/4] fix access to freed memory

[Johannes Stezenbach]

- [DVB] core: fix access to freed memory when unloading frontend
  drivers (fix by Gerd Knorr)

Signed-off-by: Johannes Stezenbach <js@xxxxxxxxxxx>

diff -rupN linux-2.6.11-rc2-bk2/drivers/media/dvb/dvb-core/dvb_frontend.c linux-2.6.11-rc2-bk2-dvb/drivers/media/dvb/dvb-core/dvb_frontend.c
--- linux-2.6.11-rc2-bk2/drivers/media/dvb/dvb-core/dvb_frontend.c	2005-01-24 23:18:39.000000000 +0100
+++ linux-2.6.11-rc2-bk2-dvb/drivers/media/dvb/dvb-core/dvb_frontend.c	2005-01-25 00:17:56.000000000 +0100
@@ -912,8 +912,9 @@ int dvb_unregister_frontend(struct dvb_f
 		fe->ops->release(fe);
 	else
 		printk("dvb_frontend: Demodulator (%s) does not have a release callback!\n", fe->ops->info.name);
-	if (fe->frontend_priv)
-		kfree(fe->frontend_priv);
+	/* fe is invalid now */
+	if (fepriv)
+		kfree(fepriv);
 	up (&frontend_mutex);
 	return 0;
 }

-
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