From owner-svn-src-head@FreeBSD.ORG Tue May 29 11:22:41 2012 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 1A9561065670; Tue, 29 May 2012 11:22:41 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id EEB858FC0C; Tue, 29 May 2012 11:22:40 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id q4TBMeM7074114; Tue, 29 May 2012 11:22:40 GMT (envelope-from mav@svn.freebsd.org) Received: (from mav@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id q4TBMeRg074111; Tue, 29 May 2012 11:22:40 GMT (envelope-from mav@svn.freebsd.org) Message-Id: <201205291122.q4TBMeRg074111@svn.freebsd.org> From: Alexander Motin Date: Tue, 29 May 2012 11:22:40 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r236228 - in head/sys/cam: ata scsi X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 May 2012 11:22:41 -0000 Author: mav Date: Tue May 29 11:22:40 2012 New Revision: 236228 URL: http://svn.freebsd.org/changeset/base/236228 Log: Plug request and references leak caused by race between invalidated ond probe periph destruction and new incoming probe request. This at least caused problems with SATA Port Multipliers hot-plug. MFC after: 2 weeks Modified: head/sys/cam/ata/ata_xpt.c head/sys/cam/scsi/scsi_xpt.c Modified: head/sys/cam/ata/ata_xpt.c ============================================================================== --- head/sys/cam/ata/ata_xpt.c Tue May 29 10:35:56 2012 (r236227) +++ head/sys/cam/ata/ata_xpt.c Tue May 29 11:22:40 2012 (r236228) @@ -1327,9 +1327,9 @@ done: done_ccb->ccb_h.status = found ? CAM_REQ_CMP : CAM_REQ_CMP_ERR; xpt_done(done_ccb); } + cam_periph_invalidate(periph); cam_release_devq(periph->path, RELSIM_RELEASE_RUNLEVEL, 0, CAM_RL_XPT + 1, FALSE); - cam_periph_invalidate(periph); cam_periph_release_locked(periph); } @@ -1580,12 +1580,17 @@ ata_scan_lun(struct cam_periph *periph, } if ((old_periph = cam_periph_find(path, "aprobe")) != NULL) { - probe_softc *softc; + if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) { + probe_softc *softc; - softc = (probe_softc *)old_periph->softc; - TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h, - periph_links.tqe); - softc->restart = 1; + softc = (probe_softc *)old_periph->softc; + TAILQ_INSERT_TAIL(&softc->request_ccbs, + &request_ccb->ccb_h, periph_links.tqe); + softc->restart = 1; + } else { + request_ccb->ccb_h.status = CAM_REQ_CMP_ERR; + xpt_done(request_ccb); + } } else { status = cam_periph_alloc(proberegister, NULL, probecleanup, probestart, "aprobe", Modified: head/sys/cam/scsi/scsi_xpt.c ============================================================================== --- head/sys/cam/scsi/scsi_xpt.c Tue May 29 10:35:56 2012 (r236227) +++ head/sys/cam/scsi/scsi_xpt.c Tue May 29 11:22:40 2012 (r236228) @@ -1706,9 +1706,9 @@ probe_device_check: done_ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(done_ccb); if (TAILQ_FIRST(&softc->request_ccbs) == NULL) { + cam_periph_invalidate(periph); cam_release_devq(periph->path, RELSIM_RELEASE_RUNLEVEL, 0, CAM_RL_XPT + 1, FALSE); - cam_periph_invalidate(periph); cam_periph_release_locked(periph); } else { probeschedule(periph); @@ -2274,11 +2274,16 @@ scsi_scan_lun(struct cam_periph *periph, } if ((old_periph = cam_periph_find(path, "probe")) != NULL) { - probe_softc *softc; + if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) { + probe_softc *softc; - softc = (probe_softc *)old_periph->softc; - TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h, - periph_links.tqe); + softc = (probe_softc *)old_periph->softc; + TAILQ_INSERT_TAIL(&softc->request_ccbs, + &request_ccb->ccb_h, periph_links.tqe); + } else { + request_ccb->ccb_h.status = CAM_REQ_CMP_ERR; + xpt_done(request_ccb); + } } else { status = cam_periph_alloc(proberegister, NULL, probecleanup, probestart, "probe",