kern/147127: Panic in pccard.c

[Hans Petter Selasky]

>Number:         147127
>Category:       kern
>Synopsis:       Panic in pccard.c
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu May 27 11:40:02 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Hans Petter Selasky
>Release:        FreeBSD 9.0-CURRENT i386
>Organization:
>Environment:

>Description:
When inserting a PCCARD a panic can occur if the PCCARD generate interrupts
before the driver is loaded.

>How-To-Repeat:
>Fix:

--- dev/pccard/pccard.c (revision 208027)
+++ dev/pccard/pccard.c (local)
@@ -1258,7 +1258,10 @@
 pccard_intr(void *arg)
 {
        struct pccard_function *pf = (struct pccard_function*) arg;
-       
+
+        if (pf->intr_handler == NULL)
+                return;                 /* can happen during PCCARD insertion 
*/
+       
        pf->intr_handler(pf->intr_handler_arg); 
 }
>Release-Note:
>Audit-Trail:
>Unformatted: