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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Hannes Reinecke <hare@suse.de>,
	Nicholas Bellinger <nab@linux-iscsi.org>
Subject: [PATCH 3.14 83/98] tcm_loop: Fix wrong I_T nexus association
Date: Sun, 25 Jan 2015 10:07:41 -0800	[thread overview]
Message-ID: <20150125180716.494657587@linuxfoundation.org> (raw)
In-Reply-To: <20150125180712.859646324@linuxfoundation.org>

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hannes Reinecke <hare@suse.de>

commit 506787a2c7daed45f0a213674ca706cbc83a9089 upstream.

tcm_loop has the I_T nexus associated with the HBA. This causes
commands to become misdirected if the HBA has more than one
target portal group; any command is then being sent to the
first target portal group instead of the correct one.

The nexus needs to be associated with the target portal group
instead.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/target/loopback/tcm_loop.c |   66 ++++++++++++-------------------------
 drivers/target/loopback/tcm_loop.h |    7 ---
 2 files changed, 24 insertions(+), 49 deletions(-)

--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -190,7 +190,7 @@ static void tcm_loop_submission_work(str
 		set_host_byte(sc, DID_TRANSPORT_DISRUPTED);
 		goto out_done;
 	}
-	tl_nexus = tl_hba->tl_nexus;
+	tl_nexus = tl_tpg->tl_nexus;
 	if (!tl_nexus) {
 		scmd_printk(KERN_ERR, sc, "TCM_Loop I_T Nexus"
 				" does not exist\n");
@@ -256,16 +256,26 @@ static int tcm_loop_queuecommand(struct
  * to struct scsi_device
  */
 static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg,
-			      struct tcm_loop_nexus *tl_nexus,
 			      int lun, int task, enum tcm_tmreq_table tmr)
 {
 	struct se_cmd *se_cmd = NULL;
 	struct se_session *se_sess;
 	struct se_portal_group *se_tpg;
+	struct tcm_loop_nexus *tl_nexus;
 	struct tcm_loop_cmd *tl_cmd = NULL;
 	struct tcm_loop_tmr *tl_tmr = NULL;
 	int ret = TMR_FUNCTION_FAILED, rc;
 
+	/*
+	 * Locate the tl_nexus and se_sess pointers
+	 */
+	tl_nexus = tl_tpg->tl_nexus;
+	if (!tl_nexus) {
+		pr_err("Unable to perform device reset without"
+				" active I_T Nexus\n");
+		return ret;
+	}
+
 	tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_KERNEL);
 	if (!tl_cmd) {
 		pr_err("Unable to allocate memory for tl_cmd\n");
@@ -281,7 +291,7 @@ static int tcm_loop_issue_tmr(struct tcm
 
 	se_cmd = &tl_cmd->tl_se_cmd;
 	se_tpg = &tl_tpg->tl_se_tpg;
-	se_sess = tl_nexus->se_sess;
+	se_sess = tl_tpg->tl_nexus->se_sess;
 	/*
 	 * Initialize struct se_cmd descriptor from target_core_mod infrastructure
 	 */
@@ -326,7 +336,6 @@ release:
 static int tcm_loop_abort_task(struct scsi_cmnd *sc)
 {
 	struct tcm_loop_hba *tl_hba;
-	struct tcm_loop_nexus *tl_nexus;
 	struct tcm_loop_tpg *tl_tpg;
 	int ret = FAILED;
 
@@ -334,21 +343,8 @@ static int tcm_loop_abort_task(struct sc
 	 * Locate the tcm_loop_hba_t pointer
 	 */
 	tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
-	/*
-	 * Locate the tl_nexus and se_sess pointers
-	 */
-	tl_nexus = tl_hba->tl_nexus;
-	if (!tl_nexus) {
-		pr_err("Unable to perform device reset without"
-				" active I_T Nexus\n");
-		return FAILED;
-	}
-
-	/*
-	 * Locate the tl_tpg pointer from TargetID in sc->device->id
-	 */
 	tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
-	ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
+	ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun,
 				 sc->request->tag, TMR_ABORT_TASK);
 	return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
 }
@@ -360,7 +356,6 @@ static int tcm_loop_abort_task(struct sc
 static int tcm_loop_device_reset(struct scsi_cmnd *sc)
 {
 	struct tcm_loop_hba *tl_hba;
-	struct tcm_loop_nexus *tl_nexus;
 	struct tcm_loop_tpg *tl_tpg;
 	int ret = FAILED;
 
@@ -368,20 +363,9 @@ static int tcm_loop_device_reset(struct
 	 * Locate the tcm_loop_hba_t pointer
 	 */
 	tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
-	/*
-	 * Locate the tl_nexus and se_sess pointers
-	 */
-	tl_nexus = tl_hba->tl_nexus;
-	if (!tl_nexus) {
-		pr_err("Unable to perform device reset without"
-				" active I_T Nexus\n");
-		return FAILED;
-	}
-	/*
-	 * Locate the tl_tpg pointer from TargetID in sc->device->id
-	 */
 	tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
-	ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
+
+	ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun,
 				 0, TMR_LUN_RESET);
 	return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
 }
@@ -988,8 +972,8 @@ static int tcm_loop_make_nexus(
 	struct tcm_loop_nexus *tl_nexus;
 	int ret = -ENOMEM;
 
-	if (tl_tpg->tl_hba->tl_nexus) {
-		pr_debug("tl_tpg->tl_hba->tl_nexus already exists\n");
+	if (tl_tpg->tl_nexus) {
+		pr_debug("tl_tpg->tl_nexus already exists\n");
 		return -EEXIST;
 	}
 	se_tpg = &tl_tpg->tl_se_tpg;
@@ -1024,7 +1008,7 @@ static int tcm_loop_make_nexus(
 	 */
 	__transport_register_session(se_tpg, tl_nexus->se_sess->se_node_acl,
 			tl_nexus->se_sess, tl_nexus);
-	tl_tpg->tl_hba->tl_nexus = tl_nexus;
+	tl_tpg->tl_nexus = tl_nexus;
 	pr_debug("TCM_Loop_ConfigFS: Established I_T Nexus to emulated"
 		" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba),
 		name);
@@ -1040,12 +1024,8 @@ static int tcm_loop_drop_nexus(
 {
 	struct se_session *se_sess;
 	struct tcm_loop_nexus *tl_nexus;
-	struct tcm_loop_hba *tl_hba = tpg->tl_hba;
 
-	if (!tl_hba)
-		return -ENODEV;
-
-	tl_nexus = tl_hba->tl_nexus;
+	tl_nexus = tpg->tl_nexus;
 	if (!tl_nexus)
 		return -ENODEV;
 
@@ -1061,13 +1041,13 @@ static int tcm_loop_drop_nexus(
 	}
 
 	pr_debug("TCM_Loop_ConfigFS: Removing I_T Nexus to emulated"
-		" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba),
+		" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tpg->tl_hba),
 		tl_nexus->se_sess->se_node_acl->initiatorname);
 	/*
 	 * Release the SCSI I_T Nexus to the emulated SAS Target Port
 	 */
 	transport_deregister_session(tl_nexus->se_sess);
-	tpg->tl_hba->tl_nexus = NULL;
+	tpg->tl_nexus = NULL;
 	kfree(tl_nexus);
 	return 0;
 }
@@ -1083,7 +1063,7 @@ static ssize_t tcm_loop_tpg_show_nexus(
 	struct tcm_loop_nexus *tl_nexus;
 	ssize_t ret;
 
-	tl_nexus = tl_tpg->tl_hba->tl_nexus;
+	tl_nexus = tl_tpg->tl_nexus;
 	if (!tl_nexus)
 		return -ENODEV;
 
--- a/drivers/target/loopback/tcm_loop.h
+++ b/drivers/target/loopback/tcm_loop.h
@@ -27,11 +27,6 @@ struct tcm_loop_tmr {
 };
 
 struct tcm_loop_nexus {
-	int it_nexus_active;
-	/*
-	 * Pointer to Linux/SCSI HBA from linux/include/scsi_host.h
-	 */
-	struct scsi_host *sh;
 	/*
 	 * Pointer to TCM session for I_T Nexus
 	 */
@@ -51,6 +46,7 @@ struct tcm_loop_tpg {
 	atomic_t tl_tpg_port_count;
 	struct se_portal_group tl_se_tpg;
 	struct tcm_loop_hba *tl_hba;
+	struct tcm_loop_nexus *tl_nexus;
 };
 
 struct tcm_loop_hba {
@@ -59,7 +55,6 @@ struct tcm_loop_hba {
 	struct se_hba_s *se_hba;
 	struct se_lun *tl_hba_lun;
 	struct se_port *tl_hba_lun_sep;
-	struct tcm_loop_nexus *tl_nexus;
 	struct device dev;
 	struct Scsi_Host *sh;
 	struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA];



  parent reply	other threads:[~2015-01-25 18:11 UTC|newest]

Thread overview: 96+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-25 18:06 [PATCH 3.14 00/98] 3.14.30-stable review Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 02/98] netlink: Always copy on mmap TX Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 03/98] netlink: Dont reorder loads/stores before marking mmap netlink frame as available Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 04/98] in6: fix conflict with glibc Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 05/98] tg3: tg3_disable_ints using uninitialized mailbox value to disable interrupts Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 07/98] batman-adv: Unify fragment size calculation Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 08/98] batman-adv: avoid NULL dereferences and fix if check Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 09/98] net: Fix stacked vlan offload features computation Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 10/98] net: Reset secmark when scrubbing packet Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 11/98] tcp: Do not apply TSO segment limit to non-TSO packets Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 12/98] alx: fix alx_poll() Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 13/98] team: avoid possible underflow of count_pending value for notify_peers and mcast_rejoin Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 14/98] enic: fix rx skb checksum Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 15/98] net/core: Handle csum for CHECKSUM_COMPLETE VXLAN forwarding Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 16/98] drm/vmwgfx: Fix fence event code Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 17/98] drm/ttm: Avoid memory allocation from shrinker functions Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 18/98] drm/radeon: fix typo in CI dpm disable Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 19/98] drm/radeon: work around a hw bug in MGCG on CIK Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 21/98] drm/radeon: properly filter DP1.2 4k modes on non-DP1.2 hw Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 22/98] drm/i915: Dont complain about stolen conflicts on gen3 Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 23/98] drm/i915: Only warn the first time we attempt to mmio whilst suspended Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 24/98] drm/nv4c/mc: disable msi Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 27/98] ARC: [nsimosci] move peripherals to match model to FPGA Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 28/98] ARC: switch to generic ENTRY/END assembler annotations Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 29/98] cfg80211: dont WARN about two consecutive Country IE hint Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 30/98] cfg80211: avoid mem leak on driver hint set Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 31/98] cfg80211: Fix 160 MHz channels with 80+80 and 160 MHz drivers Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 32/98] hp_accel: Add support for HP ZBook 15 Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 33/98] tick/powerclamp: Remove tick_nohz_idle abuse Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 34/98] genirq: Prevent proc race against freeing of irq descriptors Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 35/98] iscsi-target: Fail connection on short sendmsg writes Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 36/98] Revert "[SCSI] mpt2sas: Remove phys on topology change." Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 37/98] Revert "[SCSI] mpt3sas: Remove phys on topology change" Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 38/98] scsi: blacklist RSOC for Microsoft iSCSI target devices Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 39/98] clk: samsung: Fix double add of syscore ops after driver rebind Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 40/98] clk: Really fix deadlock with mmap_sem Greg Kroah-Hartman
2015-01-26 12:46   ` Luis Henriques
2015-01-26 22:20     ` Greg Kroah-Hartman
2015-01-25 18:06 ` [PATCH 3.14 41/98] clk: Dont try to use a struct clk* after it could have been freed Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 42/98] parisc: fix out-of-register compiler error in ldcw inline assembler function Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 43/98] storvsc: ring buffer failures may result in I/O freeze Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 44/98] net: ethernet: cpsw: fix hangs with interrupts Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 45/98] video/logo: prevent use of logos after they have been freed Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 46/98] [media] smiapp-pll: Correct clock debug prints Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 48/98] [media] smiapp: Take mutex during PLL update in sensor initialisation Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 49/98] [media] sound: simplify au0828 quirk table Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 50/98] [media] sound: Update au0828 quirks table Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 51/98] [media] uvcvideo: Fix destruction order in uvc_delete() Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 52/98] vfio-pci: Fix the check on pci device type in vfio_pci_probe() Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 53/98] drivers: net: cpsw: fix multicast flush in dual emac mode Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 54/98] ftrace/jprobes/x86: Fix conflict between jprobes and function graph tracing Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 55/98] NFSv4.1: Fix client id trunking on Linux Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 56/98] gpiolib: of: Correct error handling in of_get_named_gpiod_flags Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 57/98] gpio: fix memory and reference leaks in gpiochip_add error path Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 58/98] OHCI: add a quirk for ULi M5237 blocking on reset Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 59/98] usb: dwc3: gadget: Fix TRB preparation during SG Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 60/98] usb: dwc3: gadget: Stop TRB preparation after limit is reached Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 61/98] USB: cp210x: fix ID for production CEL MeshConnect USB Stick Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 62/98] USB: cp210x: add IDs for CEL USB sticks and MeshWorks devices Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 63/98] USB: keyspan: fix null-deref at probe Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 64/98] USB: console: fix uninitialised ldisc semaphore Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 65/98] USB: console: fix potential use after free Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 66/98] USB: EHCI: fix initialization bug in iso_stream_schedule() Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 67/98] usb: musb: stuff leak of struct usb_hcd Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 68/98] can: kvaser_usb: Dont free packets when tight on URBs Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 69/98] can: kvaser_usb: Reset all URB tx contexts upon channel close Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 70/98] can: kvaser_usb: Dont send a RESET_CHIP for non-existing channels Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 72/98] Input: I8042 - add Acer Aspire 7738 to the nomux list Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 73/98] ARM: dts: imx25: Fix the SPI1 clocks Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 74/98] ARM: imx6q: drop unnecessary semicolon Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 75/98] ARM: clk-imx6q: fix video divider for rev T0 1.0 Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 76/98] ARM: omap5/dra7xx: Fix frequency typos Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 77/98] ARM: shmobile: sh73a0 legacy: Set .control_parent for all irqpin instances Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 78/98] decompress_bunzip2: off by one in get_next_block() Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 79/98] um: Skip futex_atomic_cmpxchg_inatomic() test Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 80/98] x86, um: actually mark system call tables readonly Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 81/98] LOCKD: Fix a race when initialising nlmsvc_timeout Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 82/98] tcm_loop: Fixup tag handling Greg Kroah-Hartman
2015-01-25 18:07 ` Greg Kroah-Hartman [this message]
2015-01-25 18:07 ` [PATCH 3.14 84/98] vhost-scsi: Add missing virtio-scsi -> TCM attribute conversion Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 85/98] iscsi,iser-target: Initiate termination only once Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 86/98] iser-target: Fix flush + disconnect completion handling Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 87/98] iser-target: Parallelize CM connection establishment Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 88/98] iser-target: Fix connected_handler + teardown flow race Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 89/98] iser-target: Handle ADDR_CHANGE event for listener cm_id Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 90/98] iser-target: Fix implicit termination of connections Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 91/98] bcache: Make sure to pass GFP_WAIT to mempool_alloc() Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 92/98] KVM: nVMX: Disable unrestricted mode if ept=0 Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 93/98] netfilter: ipset: small potential read beyond the end of buffer Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 94/98] net: prevent of emerging cross-namespace symlinks Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 95/98] net: fix creation adjacent device symlinks Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 96/98] fsnotify: next_i is freed during fsnotify_unmount_inodes Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 97/98] s390/3215: fix hanging console issue Greg Kroah-Hartman
2015-01-25 18:07 ` [PATCH 3.14 98/98] s390/3215: fix tty output containing tabs Greg Kroah-Hartman
2015-01-25 21:37 ` [PATCH 3.14 00/98] 3.14.30-stable review Guenter Roeck
2015-01-26 17:43 ` Shuah Khan

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