DLPX-91810 Merge conflict in linux-kernel-gcp

Makefile

@@ -518,9 +518,6 @@ LINUXINCLUDE    := \
 		-I$(objtree)/include \
 		$(USERINCLUDE)
 
-# UBUNTU: Include our third party driver stuff too
-LINUXINCLUDE   += -I$(srctree)/ubuntu/include
-
 KBUILD_AFLAGS   := -D__ASSEMBLY__ -fno-PIE
 KBUILD_CFLAGS   := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
 		   -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
@@ -675,7 +672,7 @@ endif
 ifeq ($(KBUILD_EXTMOD),)
 # Objects we will link into vmlinux / subdirs we need to visit
 core-y		:= init/ usr/ arch/$(SRCARCH)/
-drivers-y	:= drivers/ sound/ ubuntu/
+drivers-y	:= drivers/ sound/
 drivers-$(CONFIG_SAMPLES) += samples/
 drivers-$(CONFIG_NET) += net/
 drivers-y	+= virt/
@@ -1351,7 +1348,6 @@ headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts
 	$(if $(filter um, $(SRCARCH)), $(error Headers not exportable for UML))
 	$(Q)$(MAKE) $(hdr-inst)=include/uapi
 	$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi
-	$(Q)$(MAKE) $(hdr-inst)=ubuntu/include dst=include oldheaders=
 
 # Deprecated. It is no-op now.
 PHONY += headers_check

debian.gcp-5.15/config/annotations

@@ -1,7 +1,7 @@
 # Menu: HEADER
 # FORMAT: 4
-# ARCH: amd64 arm64
-# FLAVOUR: amd64-gcp arm64-gcp
+# ARCH: amd64
+# FLAVOUR: amd64-gcp
 
 include "../../debian.gcp/config/annotations"
 

debian.gcp-5.15/dkms-versions

@@ -1,3 +1 @@
 zfs-linux 2.1.5-1ubuntu6~22.04.4 modulename=zfs debpath=pool/universe/z/%package%/zfs-dkms_%version%_all.deb arch=amd64 arch=arm64 arch=ppc64el arch=s390x rprovides=spl-modules rprovides=spl-dkms rprovides=zfs-modules rprovides=zfs-dkms
-backport-iwlwifi-dkms 9858-0ubuntu3.4 modulename=iwlwifi debpath=pool/universe/b/%package%/backport-iwlwifi-dkms_%version%_all.deb arch=amd64 rprovides=iwlwifi-modules rprovides=backport-iwlwifi-dkms type=standalone
-v4l2loopback 0.12.7-2ubuntu2~22.04.1 modulename=v4l2loopback debpath=pool/universe/v/%package%/v4l2loopback-dkms_%version%_all.deb arch=amd64 rprovides=v4l2loopback-modules rprovides=v4l2loopback-dkms

debian.gcp/dkms-versions

@@ -1,2 +1 @@
 zfs-linux 2.1.5-1ubuntu6~22.04.4 modulename=zfs debpath=pool/universe/z/%package%/zfs-dkms_%version%_all.deb arch=amd64 arch=arm64 arch=ppc64el arch=s390x rprovides=spl-modules rprovides=spl-dkms rprovides=zfs-modules rprovides=zfs-dkms
-v4l2loopback 0.12.7-2ubuntu2~22.04.1 modulename=v4l2loopback debpath=pool/universe/v/%package%/v4l2loopback-dkms_%version%_all.deb arch=amd64 rprovides=v4l2loopback-modules rprovides=v4l2loopback-dkms

debian.master/dkms-versions

@@ -1,3 +1 @@
 zfs-linux 2.1.5-1ubuntu6~22.04.4 modulename=zfs debpath=pool/universe/z/%package%/zfs-dkms_%version%_all.deb arch=amd64 arch=arm64 arch=ppc64el arch=s390x rprovides=spl-modules rprovides=spl-dkms rprovides=zfs-modules rprovides=zfs-dkms
-backport-iwlwifi-dkms 9858-0ubuntu3.4 modulename=iwlwifi debpath=pool/universe/b/%package%/backport-iwlwifi-dkms_%version%_all.deb arch=amd64 rprovides=iwlwifi-modules rprovides=backport-iwlwifi-dkms type=standalone
-v4l2loopback 0.12.7-2ubuntu2~22.04.1 modulename=v4l2loopback debpath=pool/universe/v/%package%/v4l2loopback-dkms_%version%_all.deb arch=amd64 rprovides=v4l2loopback-modules rprovides=v4l2loopback-dkms

debian/rules.d/2-binary-arch.mk

@@ -20,7 +20,7 @@ shlibdeps_opts = $(if $(CROSS_COMPILE),-- -l$(CROSS_COMPILE:%-=/usr/%)/lib)
 debian/scripts/fix-filenames: debian/scripts/fix-filenames.c
 	$(CC) -o $@ $^
 
-$(stampdir)/stamp-prepare-%: config-prepare-check-%
+$(stampdir)/stamp-prepare-%: $(stampdir)/stamp-prepare-tree-%
 	@echo Debug: $@
 	@touch $@
 $(stampdir)/stamp-prepare-tree-%: target_flavour = $*

drivers/target/iscsi/iscsi_target.c

@@ -3815,6 +3815,7 @@ int iscsi_target_tx_thread(void *arg)
 	 * connection recovery / failure event can be triggered externally.
 	 */
 	allow_signal(SIGINT);
+	complete(&conn->kthr_start_comp);
 
 	while (!kthread_should_stop()) {
 		/*
@@ -4043,6 +4044,7 @@ int iscsi_target_rx_thread(void *arg)
 	 * connection recovery / failure event can be triggered externally.
 	 */
 	allow_signal(SIGINT);
+	complete(&conn->kthr_start_comp);
 	/*
 	 * Wait for iscsi_post_login_handler() to complete before allowing
 	 * incoming iscsi/tcp socket I/O, and/or failing the connection.

drivers/target/iscsi/iscsi_target_erl1.c

@@ -1102,6 +1102,18 @@ void iscsit_handle_dataout_timeout(struct timer_list *t)
 
 	iscsit_inc_conn_usage_count(conn);
 
+	/*
+	 * If the command was aborted, for instance following a LUN RESET,
+	 * a dataout timeout might be normal.
+	 */
+	if (target_cmd_interrupted(&cmd->se_cmd)) {
+		pr_debug("DataOut timeout on interrupted cmd with"
+			" ITT[0x%08llx]\n", cmd->se_cmd.tag);
+		cmd->dataout_timer_flags &= ~ISCSI_TF_RUNNING;
+		iscsit_dec_conn_usage_count(conn);
+		return;
+	}
+
 	spin_lock_bh(&cmd->dataout_timeout_lock);
 	if (cmd->dataout_timer_flags & ISCSI_TF_STOP) {
 		spin_unlock_bh(&cmd->dataout_timeout_lock);
@@ -1115,19 +1127,22 @@ void iscsit_handle_dataout_timeout(struct timer_list *t)
 	if (!sess->sess_ops->ErrorRecoveryLevel) {
 		pr_err("Unable to recover from DataOut timeout while"
 			" in ERL=0, closing iSCSI connection for I_T Nexus"
-			" %s,i,0x%6phN,%s,t,0x%02x\n",
+			" %s,i,0x%6phN,%s,t,0x%02x, cmd ITT[0x%08llx]\n",
 			sess->sess_ops->InitiatorName, sess->isid,
-			sess->tpg->tpg_tiqn->tiqn, (u32)sess->tpg->tpgt);
+			sess->tpg->tpg_tiqn->tiqn, (u32)sess->tpg->tpgt,
+			cmd->se_cmd.tag);
 		goto failure;
 	}
 
 	if (++cmd->dataout_timeout_retries == na->dataout_timeout_retries) {
 		pr_err("Command ITT: 0x%08x exceeded max retries"
 			" for DataOUT timeout %u, closing iSCSI connection for"
-			" I_T Nexus %s,i,0x%6phN,%s,t,0x%02x\n",
+			" I_T Nexus %s,i,0x%6phN,%s,t,0x%02x,"
+			" cmd ITT[0x%08llx]\n",
 			cmd->init_task_tag, na->dataout_timeout_retries,
 			sess->sess_ops->InitiatorName, sess->isid,
-			sess->tpg->tpg_tiqn->tiqn, (u32)sess->tpg->tpgt);
+			sess->tpg->tpg_tiqn->tiqn, (u32)sess->tpg->tpgt,
+			cmd->se_cmd.tag);
 		goto failure;
 	}
 

drivers/target/iscsi/iscsi_target_login.c

@@ -647,6 +647,7 @@ int iscsit_start_kthreads(struct iscsi_conn *conn)
 		ret = PTR_ERR(conn->tx_thread);
 		goto out_bitmap;
 	}
+	wait_for_completion(&conn->kthr_start_comp);
 	conn->tx_thread_active = true;
 
 	conn->rx_thread = kthread_run(iscsi_target_rx_thread, conn,
@@ -656,6 +657,7 @@ int iscsit_start_kthreads(struct iscsi_conn *conn)
 		ret = PTR_ERR(conn->rx_thread);
 		goto out_tx;
 	}
+	wait_for_completion(&conn->kthr_start_comp);
 	conn->rx_thread_active = true;
 
 	return 0;
@@ -1104,6 +1106,7 @@ static struct iscsi_conn *iscsit_alloc_conn(struct iscsi_np *np)
 	init_completion(&conn->rx_half_close_comp);
 	init_completion(&conn->tx_half_close_comp);
 	init_completion(&conn->rx_login_comp);
+	init_completion(&conn->kthr_start_comp);
 	spin_lock_init(&conn->cmd_lock);
 	spin_lock_init(&conn->conn_usage_lock);
 	spin_lock_init(&conn->immed_queue_lock);
@@ -1114,6 +1117,7 @@ static struct iscsi_conn *iscsit_alloc_conn(struct iscsi_np *np)
 	timer_setup(&conn->nopin_response_timer,
 		    iscsit_handle_nopin_response_timeout, 0);
 	timer_setup(&conn->nopin_timer, iscsit_handle_nopin_timeout, 0);
+	timer_setup(&conn->login_timer, iscsit_login_timeout, 0);
 
 	if (iscsit_conn_set_transport(conn, np->np_transport) < 0)
 		goto free_conn;
@@ -1154,7 +1158,7 @@ void iscsi_target_login_sess_out(struct iscsi_conn *conn,
 	if (!new_sess)
 		goto old_sess_out;
 
-	pr_err("iSCSI Login negotiation failed.\n");
+	pr_debug("iSCSI Login negotiation failed.\n");
 	iscsit_collect_login_stats(conn, ISCSI_STATUS_CLS_INITIATOR_ERR,
 				   ISCSI_LOGIN_STATUS_INIT_ERR);
 	if (!zero_tsih || !conn->sess)

drivers/target/iscsi/iscsi_target_nego.c

@@ -471,12 +471,18 @@ static int iscsi_target_do_login(struct iscsi_conn *, struct iscsi_login *);
 
 static bool __iscsi_target_sk_check_close(struct sock *sk)
 {
-	if (sk->sk_state == TCP_CLOSE_WAIT || sk->sk_state == TCP_CLOSE) {
-		pr_debug("__iscsi_target_sk_check_close: TCP_CLOSE_WAIT|TCP_CLOSE,"
+	switch (sk->sk_state) {
+	case TCP_FIN_WAIT1:
+	case TCP_FIN_WAIT2:
+	case TCP_CLOSE_WAIT:
+	case TCP_LAST_ACK:
+	case TCP_CLOSE:
+		pr_debug("__iscsi_target_sk_check_close: socket closing,"
 			"returning TRUE\n");
 		return true;
+	default:
+		return false;
 	}
-	return false;
 }
 
 static bool iscsi_target_sk_check_close(struct iscsi_conn *conn)
@@ -534,25 +540,6 @@ static void iscsi_target_login_drop(struct iscsi_conn *conn, struct iscsi_login
 	iscsi_target_login_sess_out(conn, zero_tsih, true);
 }
 
-struct conn_timeout {
-	struct timer_list timer;
-	struct iscsi_conn *conn;
-};
-
-static void iscsi_target_login_timeout(struct timer_list *t)
-{
-	struct conn_timeout *timeout = from_timer(timeout, t, timer);
-	struct iscsi_conn *conn = timeout->conn;
-
-	pr_debug("Entering iscsi_target_login_timeout >>>>>>>>>>>>>>>>>>>\n");
-
-	if (conn->login_kworker) {
-		pr_debug("Sending SIGINT to conn->login_kworker %s/%d\n",
-			 conn->login_kworker->comm, conn->login_kworker->pid);
-		send_sig(SIGINT, conn->login_kworker, 1);
-	}
-}
-
 static void iscsi_target_do_login_rx(struct work_struct *work)
 {
 	struct iscsi_conn *conn = container_of(work,
@@ -561,7 +548,6 @@ static void iscsi_target_do_login_rx(struct work_struct *work)
 	struct iscsi_np *np = login->np;
 	struct iscsi_portal_group *tpg = conn->tpg;
 	struct iscsi_tpg_np *tpg_np = conn->tpg_np;
-	struct conn_timeout timeout;
 	int rc, zero_tsih = login->zero_tsih;
 	bool state;
 
@@ -599,14 +585,7 @@ static void iscsi_target_do_login_rx(struct work_struct *work)
 	conn->login_kworker = current;
 	allow_signal(SIGINT);
 
-	timeout.conn = conn;
-	timer_setup_on_stack(&timeout.timer, iscsi_target_login_timeout, 0);
-	mod_timer(&timeout.timer, jiffies + TA_LOGIN_TIMEOUT * HZ);
-	pr_debug("Starting login timer for %s/%d\n", current->comm, current->pid);
-
 	rc = conn->conn_transport->iscsit_get_login_rx(conn, login);
-	del_timer_sync(&timeout.timer);
-	destroy_timer_on_stack(&timeout.timer);
 	flush_signals(current);
 	conn->login_kworker = NULL;
 
@@ -647,6 +626,7 @@ static void iscsi_target_do_login_rx(struct work_struct *work)
 			goto err;
 	} else if (rc == 1) {
 		cancel_delayed_work(&conn->login_work);
+		iscsit_stop_login_timer(conn);
 		iscsi_target_nego_release(conn);
 		iscsi_post_login_handler(np, conn, zero_tsih);
 		iscsit_deaccess_np(np, tpg, tpg_np);
@@ -656,6 +636,7 @@ static void iscsi_target_do_login_rx(struct work_struct *work)
 err:
 	iscsi_target_restore_sock_callbacks(conn);
 	cancel_delayed_work(&conn->login_work);
+	iscsit_stop_login_timer(conn);
 	iscsi_target_login_drop(conn, login);
 	iscsit_deaccess_np(np, tpg, tpg_np);
 }
@@ -1183,7 +1164,7 @@ int iscsi_target_locate_portal(
 	 */
 	tiqn = iscsit_get_tiqn_for_login(t_buf);
 	if (!tiqn) {
-		pr_err("Unable to locate Target IQN: %s in"
+		pr_debug("Unable to locate Target IQN: %s in"
 			" Storage Node\n", t_buf);
 		iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
 				ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE);
@@ -1301,6 +1282,9 @@ int iscsi_target_start_negotiation(
 		set_bit(LOGIN_FLAGS_INITIAL_PDU, &conn->login_flags);
 		write_unlock_bh(&sk->sk_callback_lock);
 	}
+
+	iscsit_start_login_timer(conn);
+
 	/*
 	 * If iscsi_target_do_login returns zero to signal more PDU
 	 * exchanges are required to complete the login, go ahead and
@@ -1319,8 +1303,10 @@ int iscsi_target_start_negotiation(
 		iscsi_target_restore_sock_callbacks(conn);
 		iscsi_remove_failed_auth_entry(conn);
 	}
-	if (ret != 0)
+	if (ret != 0) {
+		iscsit_stop_login_timer(conn);
 		iscsi_target_nego_release(conn);
+	}
 
 	return ret;
 }

drivers/target/iscsi/iscsi_target_util.c

@@ -1040,6 +1040,34 @@ void iscsit_stop_nopin_timer(struct iscsi_conn *conn)
 	spin_unlock_bh(&conn->nopin_timer_lock);
 }
 
+void iscsit_login_timeout(struct timer_list *t)
+{
+	struct iscsi_conn *conn = from_timer(conn, t, login_timer);
+
+	pr_debug("Entering iscsi_target_login_timeout >>>>>>>>>>>>>>>>>>>\n");
+
+	if (conn->login_kworker) {
+		pr_debug("Sending SIGINT to conn->login_kworker %s/%d\n",
+		conn->login_kworker->comm, conn->login_kworker->pid);
+		send_sig(SIGINT, conn->login_kworker, 1);
+	} else {
+		pr_debug("Shutting down the socket.\n");
+		kernel_sock_shutdown(conn->sock, SHUT_RDWR);
+	}
+}
+
+void iscsit_start_login_timer(struct iscsi_conn *conn)
+{
+       pr_debug("Login timer started\n");
+       mod_timer(&conn->login_timer, jiffies + TA_LOGIN_TIMEOUT * HZ);
+}
+
+void iscsit_stop_login_timer(struct iscsi_conn *conn)
+{
+       pr_debug("Login timer stopped\n");
+       del_timer_sync(&conn->login_timer);
+}
+
 int iscsit_send_tx_data(
 	struct iscsi_cmd *cmd,
 	struct iscsi_conn *conn,

drivers/target/iscsi/iscsi_target_util.h

@@ -56,6 +56,9 @@ extern void iscsit_handle_nopin_timeout(struct timer_list *t);
 extern void __iscsit_start_nopin_timer(struct iscsi_conn *);
 extern void iscsit_start_nopin_timer(struct iscsi_conn *);
 extern void iscsit_stop_nopin_timer(struct iscsi_conn *);
+extern void iscsit_login_timeout(struct timer_list *t);
+extern void iscsit_start_login_timer(struct iscsi_conn *);
+extern void iscsit_stop_login_timer(struct iscsi_conn *);
 extern int iscsit_send_tx_data(struct iscsi_cmd *, struct iscsi_conn *, int);
 extern int iscsit_fe_sendpage_sg(struct iscsi_cmd *, struct iscsi_conn *);
 extern int iscsit_tx_login_rsp(struct iscsi_conn *, u8, u8);

drivers/target/target_core_transport.c

@@ -849,7 +849,7 @@ static void target_abort_work(struct work_struct *work)
 	target_handle_abort(cmd);
 }
 
-static bool target_cmd_interrupted(struct se_cmd *cmd)
+bool target_cmd_interrupted(struct se_cmd *cmd)
 {
 	int post_ret;
 
@@ -868,6 +868,7 @@ static bool target_cmd_interrupted(struct se_cmd *cmd)
 
 	return false;
 }
+EXPORT_SYMBOL(target_cmd_interrupted);
 
 /* May be called from interrupt context so must not sleep. */
 void target_complete_cmd_with_sense(struct se_cmd *cmd, u8 scsi_status,

fs/namespace.c

@@ -163,7 +163,7 @@ void mnt_release_group_id(struct mount *mnt)
 /*
  * vfsmount lock must be held for read
  */
-static inline void mnt_add_count(struct mount *mnt, int n)
+static noinline __noclone void mnt_add_count(struct mount *mnt, int n)
 {
 #ifdef CONFIG_SMP
 	this_cpu_add(mnt->mnt_pcp->mnt_count, n);
@@ -1590,7 +1590,8 @@ static int do_umount_root(struct super_block *sb)
 	return ret;
 }
 
-static int do_umount(struct mount *mnt, int flags)
+/* force a bpftrace dynamic function probe here */
+static noinline __noclone int do_umount(struct mount *mnt, int flags)
 {
 	struct super_block *sb = mnt->mnt.mnt_sb;
 	int retval;

include/target/iscsi/iscsi_target_core.h

@@ -552,6 +552,7 @@ struct iscsi_conn {
 	struct completion	conn_logout_comp;
 	struct completion	tx_half_close_comp;
 	struct completion	rx_half_close_comp;
+	struct completion	kthr_start_comp;
 	/* socket used by this connection */
 	struct socket		*sock;
 	void			(*orig_data_ready)(struct sock *);
@@ -567,6 +568,7 @@ struct iscsi_conn {
 	struct timer_list	nopin_timer;
 	struct timer_list	nopin_response_timer;
 	struct timer_list	transport_timer;
+	struct timer_list       login_timer;
 	struct task_struct	*login_kworker;
 	/* Spinlock used for add/deleting cmd's from conn_cmd_list */
 	spinlock_t		cmd_lock;

include/target/target_core_fabric.h

@@ -176,6 +176,7 @@ sense_reason_t	transport_generic_new_cmd(struct se_cmd *);
 
 void	target_put_cmd_and_wait(struct se_cmd *cmd);
 void	target_execute_cmd(struct se_cmd *cmd);
+bool	target_cmd_interrupted(struct se_cmd *cmd);
 
 int	transport_generic_free_cmd(struct se_cmd *, int);