Linux-Hams archive - July 1999: [PATCH] Kernel crash when downing interface

[PATCH] Kernel crash when downing interface

Matthias Welwarsky (kixprysr@unitbv.ro)
Thu, 01 Jul 1999 10:18:28 +0200

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Hi there,

I finally took the time to have a look after the crashes people reported
on linux-hams. The kernel oopsed on "ifconfig <iface> down" if there
were live connections via <iface>. I don't quite know if the attached
patch fixes the problem, but it seems to be reasonable. Please give it a
try.

Gruss,
Matthias

--
Two OS engineers facing a petri net chart:
	"dead lock in four moves!"
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--- af_ax25.c.original	Mon Jun 21 11:39:46 1999
+++ af_ax25.c	Mon Jun 21 11:48:15 1999
@@ -141,6 +141,11 @@
  */
 void ax25_free_cb(ax25_cb *ax25)
 {
+        /* MW: stop heartbeat timer before destroying
+	 * the control block
+	 */
+        ax25_stop_heartbeat(ax25);
+
 	if (ax25->digipeat != NULL) {
 		kfree(ax25->digipeat);
 		ax25->digipeat = NULL;


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