From owner-svn-src-stable-12@freebsd.org Sun May 10 02:13:39 2020 Return-Path: Delivered-To: svn-src-stable-12@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 61F9A2D5556; Sun, 10 May 2020 02:13:39 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49KSKb0czCz4Zjq; Sun, 10 May 2020 02:13:39 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 10A8025AAC; Sun, 10 May 2020 02:13:39 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 04A2DchG032695; Sun, 10 May 2020 02:13:38 GMT (envelope-from mav@FreeBSD.org) Received: (from mav@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 04A2Dc1x032694; Sun, 10 May 2020 02:13:38 GMT (envelope-from mav@FreeBSD.org) Message-Id: <202005100213.04A2Dc1x032694@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mav set sender to mav@FreeBSD.org using -f From: Alexander Motin Date: Sun, 10 May 2020 02:13:38 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r360863 - stable/12/sys/cam/ctl X-SVN-Group: stable-12 X-SVN-Commit-Author: mav X-SVN-Commit-Paths: stable/12/sys/cam/ctl X-SVN-Commit-Revision: 360863 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.32 Precedence: list List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 May 2020 02:13:39 -0000 Author: mav Date: Sun May 10 02:13:38 2020 New Revision: 360863 URL: https://svnweb.freebsd.org/changeset/base/360863 Log: MFC r360610: Add session locking in cfiscsi_ioctl_handoff(). While there, remove ifdef around cs_target check in cfiscsi_ioctl_list(). I am not sure why this ifdef was added, but without this check code will crash below on NULL dereference. Modified: stable/12/sys/cam/ctl/ctl_frontend_iscsi.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/cam/ctl/ctl_frontend_iscsi.c ============================================================================== --- stable/12/sys/cam/ctl/ctl_frontend_iscsi.c Sun May 10 00:34:09 2020 (r360862) +++ stable/12/sys/cam/ctl/ctl_frontend_iscsi.c Sun May 10 02:13:38 2020 (r360863) @@ -1582,8 +1582,10 @@ cfiscsi_ioctl_handoff(struct ctl_iscsi *ci) mtx_lock(&softc->lock); if (ct->ct_online == 0) { mtx_unlock(&softc->lock); + CFISCSI_SESSION_LOCK(cs); cs->cs_handoff_in_progress = false; cfiscsi_session_terminate(cs); + CFISCSI_SESSION_UNLOCK(cs); cfiscsi_target_release(ct); ci->status = CTL_ISCSI_ERROR; snprintf(ci->error_str, sizeof(ci->error_str), @@ -1629,8 +1631,10 @@ restart: #endif error = icl_conn_handoff(cs->cs_conn, cihp->socket); if (error != 0) { + CFISCSI_SESSION_LOCK(cs); cs->cs_handoff_in_progress = false; cfiscsi_session_terminate(cs); + CFISCSI_SESSION_UNLOCK(cs); ci->status = CTL_ISCSI_ERROR; snprintf(ci->error_str, sizeof(ci->error_str), "%s: icl_conn_handoff failed with error %d", @@ -1692,10 +1696,8 @@ cfiscsi_ioctl_list(struct ctl_iscsi *ci) sbuf_printf(sb, "\n"); mtx_lock(&softc->lock); TAILQ_FOREACH(cs, &softc->sessions, cs_next) { -#ifdef ICL_KERNEL_PROXY if (cs->cs_target == NULL) continue; -#endif error = sbuf_printf(sb, "" "%s" "%s"