Re: kern/46118

[Holger Weiß <holger%weiss.in-berlin.de@localhost>]

The following reply was made to PR kern/46118; it has been noted by GNATS.

From: Holger =?iso-8859-1?Q?Wei=DF?= <holger%weiss.in-berlin.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/46118
Date: Wed, 21 Mar 2012 17:04:39 +0100

 FWIW, the following patch makes the panic go away for me, but I have no
 idea whether it's correct (i.e., I don't know where in the call chain
 the locking should be handled):
 
 Index: sys/dev/usb/if_axe.c
 ===================================================================
 RCS file: /cvsroot/src/sys/dev/usb/if_axe.c,v
 retrieving revision 1.51
 diff -u -r1.51 if_axe.c
 --- sys/dev/usb/if_axe.c       2 Feb 2012 19:43:07 -0000       1.51
 +++ sys/dev/usb/if_axe.c       21 Mar 2012 07:55:10 -0000
 @@ -1134,7 +1134,9 @@
            axe_txeof);
  
        /* Transmit */
 +      KERNEL_LOCK(1, curlwp);
        err = usbd_transfer(c->axe_xfer);
 +      KERNEL_UNLOCK_ONE(curlwp);
        if (err != USBD_IN_PROGRESS) {
                axe_stop(ifp, 0);
                return EIO;