Author: mjacob
Date: Fri Apr 2 20:08:44 2010
New Revision: 206112
URL: http://svn.freebsd.org/changeset/base/206112
Log:
Nullify our periph pointer in dacleanup to try and catch
race conditions in callbacks/downcalls.
Modified:
head/sys/cam/scsi/scsi_da.c
Modified: head/sys/cam/scsi/scsi_da.c
==============================================================================
--- head/sys/cam/scsi/scsi_da.c Fri Apr 2 18:15:23 2010 (r206111)
+++ head/sys/cam/scsi/scsi_da.c Fri Apr 2 20:08:44 2010 (r206112)
@@ -997,6 +997,11 @@ dacleanup(struct cam_periph *periph)
xpt_print(periph->path, "can't remove sysctl context\n");
}
+ /*
+ * Nullify our periph pointer here to try and catch
+ * race conditions in callbacks/downcalls.
+ */
+ softc->disk->d_drv1 = NULL;
disk_destroy(softc->disk);
callout_drain(&softc->sendordered_c);
free(softc, M_DEVBUF);
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