>Number:         8205
>Category:       kern
>Synopsis:       VIA Rhine driver returns spurious error at init time
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 13 23:35:00 1999
>Last-Modified:
>Originator:     Dave Huang
>Organization:
Name: Dave Huang     |   Mammal, mammal / their names are called /
INet: khym@bga.com   |   they raise a paw / the bat, the cat /
FurryMUCK: Dahan     |   dolphin and dog / koala bear and hog -- TMBG
Dahan: Hani G Y+C 23 Y++ L+++ W- C++ T++ A+ E+ S++ V++ F- Q+++ P+ B+ PA+ PL++
>Release:        NetBSD-current as of August 13, 1999
>Environment:
	
System: NetBSD yerfable.metonymy.com 1.4J NetBSD 1.4J (YERFABLE) #25: Sat Aug 14 01:17:54 CDT 1999 khym@yerfable.metonymy.com:/usr/src.local/sys/arch/alpha/compile/YERFABLE alpha


>Description:
In a message to port-alpha and current-users, I wrote:
> However, a kernel compiled from last Friday's -current (Aug 6) gives me
> an error when trying to setup the IPv6 stuff:
> 
>   vr0: supplying EUI64: 00:80:c8:ff:fe:f7:c6:96
>   root on sd0a dumps on sd0b
>   root file system type: ffs
>   vr0: interface not running
>   vr0: SIOCSIFADDR error 340088

Turns out this is due to vr_init() returning an error code... however,
there wasn't any error! The variable containing the error code was
never initialized, and contained junk (hence the strange error code).

>How-To-Repeat:
	Try to use the vr driver, I guess... in my case, I have both
IPv4 and IPv6 in my kernel. IPv4 worked, but IPv6 didn't... it seems
like the problem would still occur without IPv6 though.

>Fix:
--- /usr/src/sys/dev/pci/if_vr.c	Wed Aug  4 06:17:29 1999
+++ if_vr.c	Sat Aug 14 01:17:28 1999
@@ -1217,7 +1217,7 @@
 	struct ifnet *ifp = &sc->vr_ec.ec_if;
 	struct vr_desc *d;
 	struct vr_descsoft *ds;
-	int i, error;
+	int i, error = 0;
 
 	/* Cancel pending I/O. */
 	vr_stop(sc, 0);
>Audit-Trail:
>Unformatted: