Date: Mon, 6 Oct 2014 14:52:05 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r272650 - head/sys/cam/ctl Message-ID: <201410061452.s96Eq5oH027478@svn.freebsd.org>
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Author: mav Date: Mon Oct 6 14:52:04 2014 New Revision: 272650 URL: https://svnweb.freebsd.org/changeset/base/272650 Log: Set CAM_SIM_QUEUED flag before calling ctl_queue() to avoid race. PR: 194128 Submitted by: Scott M. Ferris <smferris@gmail.com> MFC after: 3 days Sponsored by: EMC/Isilon Storage Division Modified: head/sys/cam/ctl/ctl_frontend_cam_sim.c Modified: head/sys/cam/ctl/ctl_frontend_cam_sim.c ============================================================================== --- head/sys/cam/ctl/ctl_frontend_cam_sim.c Mon Oct 6 14:43:02 2014 (r272649) +++ head/sys/cam/ctl/ctl_frontend_cam_sim.c Mon Oct 6 14:52:04 2014 (r272650) @@ -609,14 +609,16 @@ cfcs_action(struct cam_sim *sim, union c bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb, io->scsiio.cdb_len); + ccb->ccb_h.status |= CAM_SIM_QUEUED; err = ctl_queue(io); if (err != CTL_RETVAL_COMPLETE) { printf("%s: func %d: error %d returned by " "ctl_queue()!\n", __func__, ccb->ccb_h.func_code, err); ctl_free_io(io); - } else { - ccb->ccb_h.status |= CAM_SIM_QUEUED; + ccb->ccb_h.status = CAM_REQ_INVALID; + xpt_done(ccb); + return; } break; }
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