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Groups > linux.kernel > #1353617

[PATCH 3.19.y-ckt 152/196] target: Fix remote-port TMR ABORT + se_cmd fabric stop

From Kamal Mostafa <kamal@canonical.com>
Newsgroups linux.kernel
Subject [PATCH 3.19.y-ckt 152/196] target: Fix remote-port TMR ABORT + se_cmd fabric stop
Date 2016-03-09 02:00 +0100
Message-ID <raADO-hI-49@gated-at.bofh.it> (permalink)
References <raAkq-ai-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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3.19.8-ckt16 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Nicholas Bellinger <nab@linux-iscsi.org>

commit 0f4a943168f31d29a1701908931acaba518b131a upstream.

To address the bug where fabric driver level shutdown
of se_cmd occurs at the same time when TMR CMD_T_ABORTED
is happening resulting in a -1 ->cmd_kref, this patch
adds a CMD_T_FABRIC_STOP bit that is used to determine
when TMR + driver I_T nexus shutdown is happening
concurrently.

It changes target_sess_cmd_list_set_waiting() to obtain
se_cmd->cmd_kref + set CMD_T_FABRIC_STOP, and drop local
reference in target_wait_for_sess_cmds() and invoke extra
target_put_sess_cmd() during Task Aborted Status (TAS)
when necessary.

Also, it adds a new target_wait_free_cmd() wrapper around
transport_wait_for_tasks() for the special case within
transport_generic_free_cmd() to set CMD_T_FABRIC_STOP,
and is now aware of CMD_T_ABORTED + CMD_T_TAS status
bits to know when an extra transport_put_cmd() during
TAS is required.

Note transport_generic_free_cmd() is expected to block on
cmd->cmd_wait_comp in order to follow what iscsi-target
expects during iscsi_conn context se_cmd shutdown.

Cc: Quinn Tran <quinn.tran@qlogic.com>
Cc: Himanshu Madhani <himanshu.madhani@qlogic.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Andy Grover <agrover@redhat.com>
Cc: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/target/target_core_tmr.c       |  55 +++++++++----
 drivers/target/target_core_transport.c | 137 +++++++++++++++++++++++++--------
 include/target/target_core_base.h      |   2 +
 3 files changed, 147 insertions(+), 47 deletions(-)

diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index 19ef5e2..a5c2b3c 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -78,16 +78,18 @@ void core_tmr_release_req(struct se_tmr_req *tmr)
 	kfree(tmr);
 }
 
-static void core_tmr_handle_tas_abort(
-	struct se_session *tmr_sess,
-	struct se_cmd *cmd,
-	int tas)
+static void core_tmr_handle_tas_abort(struct se_cmd *cmd, int tas)
 {
-	bool remove = true;
+	unsigned long flags;
+	bool remove = true, send_tas;
 	/*
 	 * TASK ABORTED status (TAS) bit support
 	 */
-	if (tmr_sess && tmr_sess != cmd->se_sess && tas) {
+	spin_lock_irqsave(&cmd->t_state_lock, flags);
+	send_tas = (cmd->transport_state & CMD_T_TAS);
+	spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+
+	if (send_tas) {
 		remove = false;
 		transport_send_task_abort(cmd);
 	}
@@ -110,7 +112,8 @@ static int target_check_cdb_and_preempt(struct list_head *list,
 	return 1;
 }
 
-static bool __target_check_io_state(struct se_cmd *se_cmd)
+static bool __target_check_io_state(struct se_cmd *se_cmd,
+				    struct se_session *tmr_sess, int tas)
 {
 	struct se_session *sess = se_cmd->se_sess;
 
@@ -118,21 +121,33 @@ static bool __target_check_io_state(struct se_cmd *se_cmd)
 	WARN_ON_ONCE(!irqs_disabled());
 	/*
 	 * If command already reached CMD_T_COMPLETE state within
-	 * target_complete_cmd(), this se_cmd has been passed to
-	 * fabric driver and will not be aborted.
+	 * target_complete_cmd() or CMD_T_FABRIC_STOP due to shutdown,
+	 * this se_cmd has been passed to fabric driver and will
+	 * not be aborted.
 	 *
 	 * Otherwise, obtain a local se_cmd->cmd_kref now for TMR
 	 * ABORT_TASK + LUN_RESET for CMD_T_ABORTED processing as
 	 * long as se_cmd->cmd_kref is still active unless zero.
 	 */
 	spin_lock(&se_cmd->t_state_lock);
-	if (se_cmd->transport_state & CMD_T_COMPLETE) {
-		pr_debug("Attempted to abort io tag: %u already complete,"
+	if (se_cmd->transport_state & (CMD_T_COMPLETE | CMD_T_FABRIC_STOP)) {
+		pr_debug("Attempted to abort io tag: %u already complete or"
+			" fabric stop, skipping\n",
+			se_cmd->se_tfo->get_task_tag(se_cmd));
+		spin_unlock(&se_cmd->t_state_lock);
+		return false;
+	}
+	if (sess->sess_tearing_down || se_cmd->cmd_wait_set) {
+		pr_debug("Attempted to abort io tag: %u already shutdown,"
 			" skipping\n", se_cmd->se_tfo->get_task_tag(se_cmd));
 		spin_unlock(&se_cmd->t_state_lock);
 		return false;
 	}
 	se_cmd->transport_state |= CMD_T_ABORTED;
+
+	if ((tmr_sess != se_cmd->se_sess) && tas)
+		se_cmd->transport_state |= CMD_T_TAS;
+
 	spin_unlock(&se_cmd->t_state_lock);
 
 	return kref_get_unless_zero(&se_cmd->cmd_kref);
@@ -164,7 +179,7 @@ void core_tmr_abort_task(
 		printk("ABORT_TASK: Found referenced %s task_tag: %u\n",
 			se_cmd->se_tfo->get_fabric_name(), ref_tag);
 
-		if (!__target_check_io_state(se_cmd)) {
+		if (!__target_check_io_state(se_cmd, se_sess, 0)) {
 			spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
 			target_put_sess_cmd(se_cmd);
 			goto out;
@@ -234,7 +249,8 @@ static void core_tmr_drain_tmr_list(
 
 		spin_lock(&sess->sess_cmd_lock);
 		spin_lock(&cmd->t_state_lock);
-		if (!(cmd->transport_state & CMD_T_ACTIVE)) {
+		if (!(cmd->transport_state & CMD_T_ACTIVE) ||
+		     (cmd->transport_state & CMD_T_FABRIC_STOP)) {
 			spin_unlock(&cmd->t_state_lock);
 			spin_unlock(&sess->sess_cmd_lock);
 			continue;
@@ -244,15 +260,22 @@ static void core_tmr_drain_tmr_list(
 			spin_unlock(&sess->sess_cmd_lock);
 			continue;
 		}
+		if (sess->sess_tearing_down || cmd->cmd_wait_set) {
+			spin_unlock(&cmd->t_state_lock);
+			spin_unlock(&sess->sess_cmd_lock);
+			continue;
+		}
 		cmd->transport_state |= CMD_T_ABORTED;
 		spin_unlock(&cmd->t_state_lock);
 
 		rc = kref_get_unless_zero(&cmd->cmd_kref);
-		spin_unlock(&sess->sess_cmd_lock);
 		if (!rc) {
 			printk("LUN_RESET TMR: non-zero kref_get_unless_zero\n");
+			spin_unlock(&sess->sess_cmd_lock);
 			continue;
 		}
+		spin_unlock(&sess->sess_cmd_lock);
+
 		list_move_tail(&tmr_p->tmr_list, &drain_tmr_list);
 	}
 	spin_unlock_irqrestore(&dev->se_tmr_lock, flags);
@@ -329,7 +352,7 @@ static void core_tmr_drain_state_list(
 			continue;
 
 		spin_lock(&sess->sess_cmd_lock);
-		rc = __target_check_io_state(cmd);
+		rc = __target_check_io_state(cmd, tmr_sess, tas);
 		spin_unlock(&sess->sess_cmd_lock);
 		if (!rc)
 			continue;
@@ -368,7 +391,7 @@ static void core_tmr_drain_state_list(
 		cancel_work_sync(&cmd->work);
 		transport_wait_for_tasks(cmd);
 
-		core_tmr_handle_tas_abort(tmr_sess, cmd, tas);
+		core_tmr_handle_tas_abort(cmd, tas);
 		target_put_sess_cmd(cmd);
 	}
 }
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 2fdc28d..ddd4837 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2339,18 +2339,33 @@ static void transport_write_pending_qf(struct se_cmd *cmd)
 	}
 }
 
+static bool
+__transport_wait_for_tasks(struct se_cmd *, bool, bool *, bool *,
+			   unsigned long *flags);
+
+static void target_wait_free_cmd(struct se_cmd *cmd, bool *aborted, bool *tas)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&cmd->t_state_lock, flags);
+	__transport_wait_for_tasks(cmd, true, aborted, tas, &flags);
+	spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+}
+
 int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks)
 {
 	int ret = 0;
+	bool aborted = false, tas = false;
 
 	if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD)) {
 		if (wait_for_tasks && (cmd->se_cmd_flags & SCF_SCSI_TMR_CDB))
-			transport_wait_for_tasks(cmd);
+			target_wait_free_cmd(cmd, &aborted, &tas);
 
-		ret = transport_put_cmd(cmd);
+		if (!aborted || tas)
+			ret = transport_put_cmd(cmd);
 	} else {
 		if (wait_for_tasks)
-			transport_wait_for_tasks(cmd);
+			target_wait_free_cmd(cmd, &aborted, &tas);
 		/*
 		 * Handle WRITE failure case where transport_generic_new_cmd()
 		 * has already added se_cmd to state_list, but fabric has
@@ -2362,7 +2377,21 @@ int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks)
 		if (cmd->se_lun)
 			transport_lun_remove_cmd(cmd);
 
-		ret = transport_put_cmd(cmd);
+		if (!aborted || tas)
+			ret = transport_put_cmd(cmd);
+	}
+	/*
+	 * If the task has been internally aborted due to TMR ABORT_TASK
+	 * or LUN_RESET, target_core_tmr.c is responsible for performing
+	 * the remaining calls to target_put_sess_cmd(), and not the
+	 * callers of this function.
+	 */
+	if (aborted) {
+		pr_debug("Detected CMD_T_ABORTED for ITT: %u\n",
+			cmd->se_tfo->get_task_tag(cmd));
+		wait_for_completion(&cmd->cmd_wait_comp);
+		cmd->se_tfo->release_cmd(cmd);
+		ret = 1;
 	}
 	return ret;
 }
@@ -2416,6 +2445,7 @@ static void target_release_cmd_kref(struct kref *kref)
 {
 	struct se_cmd *se_cmd = container_of(kref, struct se_cmd, cmd_kref);
 	struct se_session *se_sess = se_cmd->se_sess;
+	bool fabric_stop;
 
 	if (list_empty(&se_cmd->se_cmd_list)) {
 		spin_unlock(&se_sess->sess_cmd_lock);
@@ -2423,13 +2453,19 @@ static void target_release_cmd_kref(struct kref *kref)
 		se_cmd->se_tfo->release_cmd(se_cmd);
 		return;
 	}
-	if (se_sess->sess_tearing_down && se_cmd->cmd_wait_set) {
+
+	spin_lock(&se_cmd->t_state_lock);
+	fabric_stop = (se_cmd->transport_state & CMD_T_FABRIC_STOP);
+	spin_unlock(&se_cmd->t_state_lock);
+
+	if (se_cmd->cmd_wait_set || fabric_stop) {
+		list_del_init(&se_cmd->se_cmd_list);
 		spin_unlock(&se_sess->sess_cmd_lock);
 		target_free_cmd_mem(se_cmd);
 		complete(&se_cmd->cmd_wait_comp);
 		return;
 	}
-	list_del(&se_cmd->se_cmd_list);
+	list_del_init(&se_cmd->se_cmd_list);
 	spin_unlock(&se_sess->sess_cmd_lock);
 
 	target_free_cmd_mem(se_cmd);
@@ -2462,6 +2498,7 @@ void target_sess_cmd_list_set_waiting(struct se_session *se_sess)
 {
 	struct se_cmd *se_cmd;
 	unsigned long flags;
+	int rc;
 
 	spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
 	if (se_sess->sess_tearing_down) {
@@ -2471,8 +2508,15 @@ void target_sess_cmd_list_set_waiting(struct se_session *se_sess)
 	se_sess->sess_tearing_down = 1;
 	list_splice_init(&se_sess->sess_cmd_list, &se_sess->sess_wait_list);
 
-	list_for_each_entry(se_cmd, &se_sess->sess_wait_list, se_cmd_list)
-		se_cmd->cmd_wait_set = 1;
+	list_for_each_entry(se_cmd, &se_sess->sess_wait_list, se_cmd_list) {
+		rc = kref_get_unless_zero(&se_cmd->cmd_kref);
+		if (rc) {
+			se_cmd->cmd_wait_set = 1;
+			spin_lock(&se_cmd->t_state_lock);
+			se_cmd->transport_state |= CMD_T_FABRIC_STOP;
+			spin_unlock(&se_cmd->t_state_lock);
+		}
+	}
 
 	spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags);
 }
@@ -2485,15 +2529,25 @@ void target_wait_for_sess_cmds(struct se_session *se_sess)
 {
 	struct se_cmd *se_cmd, *tmp_cmd;
 	unsigned long flags;
+	bool tas;
 
 	list_for_each_entry_safe(se_cmd, tmp_cmd,
 				&se_sess->sess_wait_list, se_cmd_list) {
-		list_del(&se_cmd->se_cmd_list);
+		list_del_init(&se_cmd->se_cmd_list);
 
 		pr_debug("Waiting for se_cmd: %p t_state: %d, fabric state:"
 			" %d\n", se_cmd, se_cmd->t_state,
 			se_cmd->se_tfo->get_cmd_state(se_cmd));
 
+		spin_lock_irqsave(&se_cmd->t_state_lock, flags);
+		tas = (se_cmd->transport_state & CMD_T_TAS);
+		spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
+
+		if (!target_put_sess_cmd(se_cmd)) {
+			if (tas)
+				target_put_sess_cmd(se_cmd);
+		}
+
 		wait_for_completion(&se_cmd->cmd_wait_comp);
 		pr_debug("After cmd_wait_comp: se_cmd: %p t_state: %d"
 			" fabric state: %d\n", se_cmd, se_cmd->t_state,
@@ -2536,34 +2590,38 @@ int transport_clear_lun_ref(struct se_lun *lun)
 	return 0;
 }
 
-/**
- * transport_wait_for_tasks - wait for completion to occur
- * @cmd:	command to wait
- *
- * Called from frontend fabric context to wait for storage engine
- * to pause and/or release frontend generated struct se_cmd.
- */
-bool transport_wait_for_tasks(struct se_cmd *cmd)
+static bool
+__transport_wait_for_tasks(struct se_cmd *cmd, bool fabric_stop,
+			   bool *aborted, bool *tas, unsigned long *flags)
+	__releases(&cmd->t_state_lock)
+	__acquires(&cmd->t_state_lock)
 {
-	unsigned long flags;
 
-	spin_lock_irqsave(&cmd->t_state_lock, flags);
+	assert_spin_locked(&cmd->t_state_lock);
+	WARN_ON_ONCE(!irqs_disabled());
+
+	if (fabric_stop)
+		cmd->transport_state |= CMD_T_FABRIC_STOP;
+
+	if (cmd->transport_state & CMD_T_ABORTED)
+		*aborted = true;
+
+	if (cmd->transport_state & CMD_T_TAS)
+		*tas = true;
+
 	if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD) &&
-	    !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
-		spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+	    !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB))
 		return false;
-	}
 
 	if (!(cmd->se_cmd_flags & SCF_SUPPORTED_SAM_OPCODE) &&
-	    !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
-		spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+	    !(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB))
 		return false;
-	}
 
-	if (!(cmd->transport_state & CMD_T_ACTIVE)) {
-		spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+	if (!(cmd->transport_state & CMD_T_ACTIVE))
+		return false;
+
+	if (fabric_stop && *aborted)
 		return false;
-	}
 
 	cmd->transport_state |= CMD_T_STOP;
 
@@ -2572,20 +2630,37 @@ bool transport_wait_for_tasks(struct se_cmd *cmd)
 		cmd, cmd->se_tfo->get_task_tag(cmd),
 		cmd->se_tfo->get_cmd_state(cmd), cmd->t_state);
 
-	spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+	spin_unlock_irqrestore(&cmd->t_state_lock, *flags);
 
 	wait_for_completion(&cmd->t_transport_stop_comp);
 
-	spin_lock_irqsave(&cmd->t_state_lock, flags);
+	spin_lock_irqsave(&cmd->t_state_lock, *flags);
 	cmd->transport_state &= ~(CMD_T_ACTIVE | CMD_T_STOP);
 
 	pr_debug("wait_for_tasks: Stopped wait_for_completion("
 		"&cmd->t_transport_stop_comp) for ITT: 0x%08x\n",
 		cmd->se_tfo->get_task_tag(cmd));
 
+	return true;
+}
+
+/**
+ * transport_wait_for_tasks - wait for completion to occur
+ * @cmd:	command to wait
+ *
+ * Called from frontend fabric context to wait for storage engine
+ * to pause and/or release frontend generated struct se_cmd.
+ */
+bool transport_wait_for_tasks(struct se_cmd *cmd)
+{
+	unsigned long flags;
+	bool ret, aborted = false, tas = false;
+
+	spin_lock_irqsave(&cmd->t_state_lock, flags);
+	ret = __transport_wait_for_tasks(cmd, false, &aborted, &tas, &flags);
 	spin_unlock_irqrestore(&cmd->t_state_lock, flags);
 
-	return true;
+	return ret;
 }
 EXPORT_SYMBOL(transport_wait_for_tasks);
 
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index b1c38b6..f75fa8c 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -539,6 +539,8 @@ struct se_cmd {
 #define CMD_T_DEV_ACTIVE	(1 << 7)
 #define CMD_T_REQUEST_STOP	(1 << 8)
 #define CMD_T_BUSY		(1 << 9)
+#define CMD_T_TAS		(1 << 10)
+#define CMD_T_FABRIC_STOP	(1 << 11)
 	spinlock_t		t_state_lock;
 	struct completion	t_transport_stop_comp;
 
-- 
2.7.0

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  [PATCH 3.19.y-ckt 185/196] s390/perf_event: fix address range for asynchronous stack Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 191/196] netlink: not trim skb for mmaped socket when dump Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 184/196] s390/oprofile: fix address range for asynchronous stack Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 160/196] ipv6/udp: use sticky pktinfo egress ifindex on connect() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 151/196] target: Fix TAS handling for multi-session se_node_acls Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 154/196] af_iucv: Validate socket address length in iucv_sock_bind() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 167/196] sctp: translate network order to host order when users get a hmacid Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 159/196] sctp: allow setting SCTP_SACK_IMMEDIATELY by the application Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 158/196] pptp: fix illegal memory access caused by multiple bind()s Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 166/196] tg3: Fix for tg3 transmit queue 0 timed out when too many gso_segs Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 155/196] net: dp83640: Fix tx timestamp overflow handling. Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 162/196] ipv6: addrconf: Fix recursive spin lock call Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 181/196] sctp: Fix port hash table size computation Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 168/196] flow_dissector: Fix unaligned access in __skb_flow_dissector when used by eth_get_headlen Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 192/196] ARM: dts: kirkwood: use unique machine name for ds112 Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 182/196] net: phy: bcm7xxx: Fix shadow mode 2 disabling Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 161/196] net/ipv6: add sysctl option accept_ra_min_hop_limit Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 157/196] af_unix: fix struct pid memory leak Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 174/196] net/mlx4_en: Count HW buffer overrun only once Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 156/196] tcp: fix NULL deref in tcp_v4_send_ack() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 163/196] ipv6: fix a lockdep splat Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 176/196] net/mlx4_en: Avoid changing dev->features directly in run-time Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 186/196] af_unix: Don't set err in unix_stream_read_generic unless there was an error Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 164/196] unix: correctly track in-flight fds in sending process user_struct Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 183/196] net: phy: bcm7xxx: Fix bcm7xxx_config_init() check Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 165/196] net:Add sysctl_max_skb_frags Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 178/196] route: check and remove route cache when we get route Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 169/196] net: Copy inner L3 and L4 headers as unaligned on GRE TEB Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 170/196] bonding: Fix ARP monitor validation Kamal Mostafa <kamal@canonical.com> - 2016-03-09 01:50 +0100
  [PATCH 3.19.y-ckt 138/196] tracing: Fix showing function event in available_events Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 149/196] target: Remove first argument of target_{get,put}_sess_cmd() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 130/196] kernel/resource.c: fix muxed resource handling in __request_region() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 125/196] USB: cp210x: add IDs for GE B650V3 and B850V3 boards Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 114/196] dmaengine: dw: disable BLOCK IRQs for non-cyclic xfer Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 128/196] ext4: fix bh->b_state corruption Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 129/196] ext4: fix crashes in dioread_nolock mode Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 105/196] ext4: don't read blocks from disk after extents being swapped Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 109/196] xen/pciback: Save the number of MSI-X entries to be copied later. Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 121/196] usb: dwc3: Fix assignment of EP transfer resources Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 142/196] KVM: x86: MMU: fix ubsan index-out-of-range warning Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 113/196] ALSA: hda - Cancel probe work instead of flush at remove Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 143/196] ALSA: hda - Fix headset support and noise on HP EliteBook 755 G2 Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 147/196] do_last(): don't let a bogus return value from ->open() et.al. to confuse us Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 153/196] target: Fix race with SCF_SEND_DELAYED_TAS handling Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 118/196] drm/radeon: use post-decrement in error handling Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 146/196] hpfs: don't truncate the file when delete fails Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 119/196] drm/qxl: use kmalloc_array to alloc reloc_info in qxl_process_single_command Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 124/196] USB: option: add support for SIM7100E Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 134/196] drm/radeon/pm: adjust display configuration after powerstate Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
    Re: [PATCH 3.19.y-ckt 134/196] drm/radeon/pm: adjust display  configuration after powerstate Kamal Mostafa <kamal@canonical.com> - 2016-03-09 19:40 +0100
  [PATCH 3.19.y-ckt 152/196] target: Fix remote-port TMR ABORT + se_cmd fabric stop Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 136/196] KVM: arm/arm64: vgic: Ensure bitmaps are long enough Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 132/196] can: ems_usb: Fix possible tx overflow Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 108/196] xen/pciback: Check PF instead of VF for PCI_COMMAND_MEMORY Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 150/196] target: Fix LUN_RESET active I/O handling for ACK_KREF Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 133/196] s390/compat: correct restore of high gprs on signal return Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 127/196] hwmon: (ads1015) Handle negative conversion values correctly Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 140/196] libceph: use the right footer size when skipping a message Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 111/196] ALSA: seq: Drop superfluous error/debug messages after malloc failures Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 139/196] libceph: don't bail early from try_read() when skipping a message Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 135/196] sunrpc/cache: fix off-by-one in qword_get() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:00 +0100
  [PATCH 3.19.y-ckt 084/196] ARM: 8517/1: ICST: avoid arithmetic overflow in icst_hz() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 062/196] drm/dp/mst: deallocate payload on port destruction Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 101/196] btrfs: properly set the termination value of ctx->pos in readdir Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 069/196] radix-tree: fix oops after radix_tree_iter_retry Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 061/196] drm/dp/mst: Reverse order of MST enable and clearing VC payload table. Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 094/196] ahci: Intel DNV device IDs SATA Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 087/196] ALSA: timer: Fix race between stop and interrupt Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 095/196] workqueue: handle NUMA_NO_NODE for unbound pool_workqueue lookup Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 092/196] drm/i915/skl: Don't skip mst encoders in skl_ddi_pll_select() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 074/196] tty: Add support for PCIe WCH382 2S multi-IO card Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 077/196] ALSA: hda - Fix speaker output from VAIO AiO machines Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 102/196] irqchip/gic-v3-its: Fix double ICC_EOIR write for LPI in EOImode==1 Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 076/196] pty: make sure super_block is still valid in final /dev/tty close Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 063/196] ALSA: hda - Fix static checker warning in patch_hdmi.c Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 088/196] ALSA: timer: Fix race at concurrent reads Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 089/196] phy: core: Fixup return value of phy_exit when !pm_runtime_enabled Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 053/196] [media] saa7134-alsa: Only frees registered sound cards Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 071/196] crypto: atmel-sha - fix atmel_sha_remove() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 098/196] s390/dasd: prevent incorrect length error under z/VM after PAV changes Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 072/196] qla2xxx: Fix stale pointer access. Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 097/196] cifs: fix erroneous return value Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 080/196] drm/i915/dsi: defend gpio table against out of bounds access Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 093/196] drm/i915: fix error path in intel_setup_gmbus() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 085/196] xen/scsiback: correct frontend counting Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 091/196] phy: twl4030-usb: Relase usb phy on unload Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 078/196] klist: fix starting point removed bug in klist iterators Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 065/196] dump_stack: avoid potential deadlocks Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 081/196] drm/i915/dsi: don't pass arbitrary data to sideband Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 075/196] pty: fix possible use after free of tty->driver_data Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 070/196] crypto: user - lock crypto_alg_list on alg dump Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 082/196] powerpc: Fix dedotify for binutils >= 2.26 Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 079/196] ALSA: dummy: Implement timer backend switching more safely Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 056/196] scsi_dh_rdac: always retry MODE SELECT on command lock violation Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 086/196] nfs: fix nfs_size_to_loff_t Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 073/196] serial: omap: Prevent DoS using unprivileged ioctl(TIOCSRS485) Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 083/196] ALSA: timer: Fix wrong instance passed to slave callbacks Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 067/196] ocfs2/dlm: clear refmap bit of recovery lock while doing local recovery cleanup Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:10 +0100
  [PATCH 3.19.y-ckt 045/196] drivers/scsi/sg.c: mark VMA as VM_IO to prevent migration Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 058/196] drm: fix missing reference counting decrease Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 047/196] Revert "xhci: don't finish a TD if we get a short-transfer event mid TD" Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 060/196] drm/dp/mst: Calculate MST PBN with 31.32 fixed point Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 033/196] ALSA: timer: Fix link corruption due to double start or stop Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 027/196] intel_scu_ipcutil: underflow in scu_reg_access() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 039/196] ASoC: dpcm: fix the BE state on hw_free Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 028/196] ALSA: seq: Fix race at closing in virmidi driver Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 037/196] drm: add helper to check for wc memory support Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 015/196] libata: disable forced PORTS_IMPL for >= AHCI 1.3 Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 046/196] radix-tree: fix race in gang lookup Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 051/196] [media] tda1004x: only update the frontend properties if locked Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 049/196] xhci: Fix list corruption in urb dequeue at host removal Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 057/196] SCSI: Add Marvell Console to VPD blacklist Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 029/196] ALSA: rawmidi: Remove kernel WARNING for NULL user-space buffer check Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 040/196] module: wrapper for symbol name. Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 041/196] ALSA: hda - Add fixup for Mac Mini 7,1 model Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 059/196] drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 034/196] libata: fix sff host state machine locking while polling Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 025/196] iio: inkern: fix a NULL dereference on error Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 008/196] x86/entry/compat: Add missing CLAC to entry_INT80_32 Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 043/196] ALSA: rawmidi: Fix race at copying & updating the position Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 042/196] ALSA: rawmidi: Make snd_rawmidi_transmit() race-free Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 031/196] ALSA: seq: Fix yet another races among ALSA timer accesses Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 030/196] ALSA: pcm: Fix potential deadlock in OSS emulation Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 044/196] ALSA: seq: Fix lockdep warnings due to double mutex locks Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 035/196] MIPS: Fix buffer overflow in syscall_get_arguments() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 036/196] cputime: Prevent 32bit overflow in time[val|spec]_to_cputime() Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 024/196] crypto: algif_hash - wait for crypto_ahash_init() to complete Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 014/196] PCI/AER: Flush workqueue on device remove to avoid use-after-free Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 023/196] target: Fix WRITE_SAME/DISCARD conversion to linux 512b sectors Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 013/196] cgroup: make sure a parent css isn't offlined before its children Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 026/196] iio: pressure: mpl115: fix temperature offset sign Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 038/196] drm/radeon: mask out WC from BO on unsupported arches Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 032/196] ALSA: timer: Code cleanup Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:20 +0100
  [PATCH 3.19.y-ckt 005/196] EVM: Use crypto_memneq() for digest comparisons Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:30 +0100
  [PATCH 3.19.y-ckt 007/196] drm/vmwgfx: Fix an fb unlocking bug Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:30 +0100
  [PATCH 3.19.y-ckt 004/196] iw_cxgb3: Fix incorrectly returning error on success Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:30 +0100
  [PATCH 3.19.y-ckt 010/196] iio: dac: mcp4725: set iio name property in sysfs Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:30 +0100
  [PATCH 3.19.y-ckt 006/196] ALSA: usb-audio: avoid freeing umidi object twice Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:30 +0100
  [PATCH 3.19.y-ckt 011/196] iommu/vt-d: Fix 64-bit accesses to 32-bit DMAR_GSTS_REG Kamal Mostafa <kamal@canonical.com> - 2016-03-09 02:30 +0100

csiph-web