Date: Fri, 2 Apr 2010 20:08:45 +0000 (UTC) From: Matt Jacob <mjacob@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r206112 - head/sys/cam/scsi Message-ID: <201004022008.o32K8jrU064011@svn.freebsd.org>
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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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