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Date:	Wed, 13 Jul 2011 05:46:51 +0200
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	torvalds@...ux-foundation.org, stable@...nel.org, lwn@....net
Subject: Re: Linux 2.6.33.16

diff --git a/Makefile b/Makefile
index e5e9b65..db07635 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 33
-EXTRAVERSION = .15
+EXTRAVERSION = .16
 NAME = Man-Eating Seals of Antiquity
 
 # *DOCUMENTATION*
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
index 7fcad58..3d6b43f 100644
--- a/arch/um/kernel/dyn.lds.S
+++ b/arch/um/kernel/dyn.lds.S
@@ -50,8 +50,18 @@ SECTIONS
   .rela.got       : { *(.rela.got) }
   .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
   .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
-  .rel.plt        : { *(.rel.plt) }
-  .rela.plt       : { *(.rela.plt) }
+  .rel.plt : {
+	*(.rel.plt)
+	PROVIDE_HIDDEN(__rel_iplt_start = .);
+	*(.rel.iplt)
+	PROVIDE_HIDDEN(__rel_iplt_end = .);
+  }
+  .rela.plt : {
+	*(.rela.plt)
+	PROVIDE_HIDDEN(__rela_iplt_start = .);
+	*(.rela.iplt)
+	PROVIDE_HIDDEN(__rela_iplt_end = .);
+  }
   .init           : {
     KEEP (*(.init))
   } =0x90909090
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index 664f942..79a077a 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -43,6 +43,23 @@ SECTIONS
 	__syscall_stub_end = .;
   }
 
+  /*
+   * These are needed even in a static link, even if they wind up being empty.
+   * Newer glibc needs these __rel{,a}_iplt_{start,end} symbols.
+   */
+  .rel.plt : {
+	*(.rel.plt)
+	PROVIDE_HIDDEN(__rel_iplt_start = .);
+	*(.rel.iplt)
+	PROVIDE_HIDDEN(__rel_iplt_end = .);
+  }
+  .rela.plt : {
+	*(.rela.plt)
+	PROVIDE_HIDDEN(__rela_iplt_start = .);
+	*(.rela.iplt)
+	PROVIDE_HIDDEN(__rela_iplt_end = .);
+  }
+
   #include "asm/common.lds.S"
 
   init.data : { INIT_DATA }
diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c
index 93a11d7..e696144 100644
--- a/arch/um/os-Linux/mem.c
+++ b/arch/um/os-Linux/mem.c
@@ -10,6 +10,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <string.h>
+#include <sys/stat.h>
 #include <sys/mman.h>
 #include <sys/param.h>
 #include "init.h"
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 356a799..3f90a2c 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1658,6 +1658,11 @@ static __init void xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn)
 		for (pteidx = 0; pteidx < PTRS_PER_PTE; pteidx++, pfn++) {
 			pte_t pte;
 
+#ifdef CONFIG_X86_32
+			if (pfn > max_pfn_mapped)
+				max_pfn_mapped = pfn;
+#endif
+
 			if (!pte_none(pte_page[pteidx]))
 				continue;
 
@@ -1770,7 +1775,9 @@ __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd,
 {
 	pmd_t *kernel_pmd;
 
-	max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->mfn_list));
+	max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->pt_base) +
+				  xen_start_info->nr_pt_frames * PAGE_SIZE +
+				  512*1024);
 
 	kernel_pmd = m2v(pgd[KERNEL_PGD_BOUNDARY].pgd);
 	memcpy(level2_kernel_pgt, kernel_pmd, sizeof(pmd_t) * PTRS_PER_PMD);
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index abc5d80..d6da39b 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -2537,8 +2537,14 @@ static void __cfq_exit_single_io_context(struct cfq_data *cfqd,
 	cic->dead_key = (unsigned long) cic->key;
 	cic->key = NULL;
 
-	if (ioc->ioc_data == cic)
+	rcu_read_lock();
+	if (rcu_dereference(ioc->ioc_data) == cic) {
+		rcu_read_unlock();
+		spin_lock(&ioc->lock);
 		rcu_assign_pointer(ioc->ioc_data, NULL);
+		spin_unlock(&ioc->lock);
+	} else
+		rcu_read_unlock();
 
 	if (cic->cfqq[BLK_RW_ASYNC]) {
 		cfq_exit_cfqq(cfqd, cic->cfqq[BLK_RW_ASYNC]);
diff --git a/drivers/char/tty_ldisc.c b/drivers/char/tty_ldisc.c
index 236628f..48de74a 100644
--- a/drivers/char/tty_ldisc.c
+++ b/drivers/char/tty_ldisc.c
@@ -543,7 +543,7 @@ static int tty_ldisc_halt(struct tty_struct *tty)
 static int tty_ldisc_wait_idle(struct tty_struct *tty)
 {
 	int ret;
-	ret = wait_event_interruptible_timeout(tty_ldisc_idle,
+	ret = wait_event_timeout(tty_ldisc_idle,
 			atomic_read(&tty->ldisc->users) == 1, 5 * HZ);
 	if (ret < 0)
 		return ret;
@@ -750,6 +750,8 @@ static int tty_ldisc_reinit(struct tty_struct *tty, int ldisc)
 	if (IS_ERR(ld))
 		return -1;
 
+	WARN_ON_ONCE(tty_ldisc_wait_idle(tty));
+
 	tty_ldisc_close(tty, tty->ldisc);
 	tty_ldisc_put(tty->ldisc);
 	tty->ldisc = NULL;
diff --git a/drivers/i2c/busses/i2c-taos-evm.c b/drivers/i2c/busses/i2c-taos-evm.c
index dd39c1e..26c352a 100644
--- a/drivers/i2c/busses/i2c-taos-evm.c
+++ b/drivers/i2c/busses/i2c-taos-evm.c
@@ -234,7 +234,7 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
 
 	if (taos->state != TAOS_STATE_IDLE) {
 		err = -ENODEV;
-		dev_dbg(&serio->dev, "TAOS EVM reset failed (state=%d, "
+		dev_err(&serio->dev, "TAOS EVM reset failed (state=%d, "
 			"pos=%d)\n", taos->state, taos->pos);
 		goto exit_close;
 	}
@@ -255,7 +255,7 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
 					 msecs_to_jiffies(250));
 	if (taos->state != TAOS_STATE_IDLE) {
 		err = -ENODEV;
-		dev_err(&adapter->dev, "Echo off failed "
+		dev_err(&serio->dev, "TAOS EVM echo off failed "
 			"(state=%d)\n", taos->state);
 		goto exit_close;
 	}
@@ -263,7 +263,7 @@ static int taos_connect(struct serio *serio, struct serio_driver *drv)
 	err = i2c_add_adapter(adapter);
 	if (err)
 		goto exit_close;
-	dev_dbg(&serio->dev, "Connected to TAOS EVM\n");
+	dev_info(&serio->dev, "Connected to TAOS EVM\n");
 
 	taos->client = taos_instantiate_device(adapter);
 	return 0;
@@ -288,7 +288,7 @@ static void taos_disconnect(struct serio *serio)
 	serio_set_drvdata(serio, NULL);
 	kfree(taos);
 
-	dev_dbg(&serio->dev, "Disconnected from TAOS EVM\n");
+	dev_info(&serio->dev, "Disconnected from TAOS EVM\n");
 }
 
 static struct serio_device_id taos_serio_ids[] = {
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 0da8025..4610aa3 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -6862,6 +6862,7 @@ static int remove_and_add_spares(mddev_t *mddev)
 		list_for_each_entry(rdev, &mddev->disks, same_set) {
 			if (rdev->raid_disk >= 0 &&
 			    !test_bit(In_sync, &rdev->flags) &&
+			    !test_bit(Faulty, &rdev->flags) &&
 			    !test_bit(Blocked, &rdev->flags))
 				spares++;
 			if (rdev->raid_disk < 0
diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c
index ea11839..03f7a01 100644
--- a/drivers/media/video/uvc/uvc_queue.c
+++ b/drivers/media/video/uvc/uvc_queue.c
@@ -165,6 +165,8 @@ int uvc_free_buffers(struct uvc_video_queue *queue)
 	}
 
 	if (queue->count) {
+		uvc_queue_cancel(queue, 0);
+		INIT_LIST_HEAD(&queue->mainqueue);
 		vfree(queue->mem);
 		queue->count = 0;
 	}
diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index 689b9bd..e9a92e0 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -691,10 +691,10 @@ static void sixpack_close(struct tty_struct *tty)
 {
 	struct sixpack *sp;
 
-	write_lock(&disc_data_lock);
+	write_lock_bh(&disc_data_lock);
 	sp = tty->disc_data;
 	tty->disc_data = NULL;
-	write_unlock(&disc_data_lock);
+	write_unlock_bh(&disc_data_lock);
 	if (!sp)
 		return;
 
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index 7db0a1c..569ff3c 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -812,10 +812,10 @@ static void mkiss_close(struct tty_struct *tty)
 {
 	struct mkiss *ax;
 
-	write_lock(&disc_data_lock);
+	write_lock_bh(&disc_data_lock);
 	ax = tty->disc_data;
 	tty->disc_data = NULL;
-	write_unlock(&disc_data_lock);
+	write_unlock_bh(&disc_data_lock);
 
 	if (!ax)
 		return;
diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c
index 6a3f4da..e67de35 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath/ath5k/eeprom.c
@@ -1588,14 +1588,12 @@ ath5k_eeprom_free_pcal_info(struct ath5k_hw *ah, int mode)
 		if (!chinfo[pier].pd_curves)
 			continue;
 
-		for (pdg = 0; pdg < ee->ee_pd_gains[mode]; pdg++) {
+		for (pdg = 0; pdg < AR5K_EEPROM_N_PD_CURVES; pdg++) {
 			struct ath5k_pdgain_info *pd =
 					&chinfo[pier].pd_curves[pdg];
 
-			if (pd != NULL) {
-				kfree(pd->pd_step);
-				kfree(pd->pd_pwr);
-			}
+			kfree(pd->pd_step);
+			kfree(pd->pd_pwr);
 		}
 
 		kfree(chinfo[pier].pd_curves);
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index ce99d8b..7e216ed 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1267,13 +1267,22 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
 		for (; i < udev->actconfig->desc.bNumInterfaces; i++) {
 			intf = udev->actconfig->interface[i];
 			status = usb_suspend_interface(udev, intf, msg);
+
+			/* Ignore errors during system sleep transitions */
+			if (!(msg.event & PM_EVENT_AUTO))
+				status = 0;
 			if (status != 0)
 				break;
 		}
 	}
-	if (status == 0)
+	if (status == 0) {
 		status = usb_suspend_device(udev, msg);
 
+		/* Again, ignore errors during system sleep transitions */
+		if (!(msg.event & PM_EVENT_AUTO))
+			status = 0;
+	}
+
 	/* If the suspend failed, resume interfaces that did get suspended */
 	if (status != 0) {
 		pm_message_t msg2;
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 6a8a3c2..8aa251e 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2232,6 +2232,10 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
 				USB_DEVICE_REMOTE_WAKEUP, 0,
 				NULL, 0,
 				USB_CTRL_SET_TIMEOUT);
+
+		/* System sleep transitions should never fail */
+		if (!(msg.event & PM_EVENT_AUTO))
+			status = 0;
 	} else {
 		/* device has up to 10 msec to fully suspend */
 		dev_dbg(&udev->dev, "usb %ssuspend\n",
@@ -2471,16 +2475,15 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg)
 	struct usb_device	*hdev = hub->hdev;
 	unsigned		port1;
 
-	/* fail if children aren't already suspended */
+	/* Warn if children aren't already suspended */
 	for (port1 = 1; port1 <= hdev->maxchild; port1++) {
 		struct usb_device	*udev;
 
 		udev = hdev->children [port1-1];
 		if (udev && udev->can_submit) {
-			if (!(msg.event & PM_EVENT_AUTO))
-				dev_dbg(&intf->dev, "port %d nyet suspended\n",
-						port1);
-			return -EBUSY;
+			dev_warn(&intf->dev, "port %d nyet suspended\n", port1);
+			if (msg.event & PM_EVENT_AUTO)
+				return -EBUSY;
 		}
 	}
 
diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c
index 53d90ca..37a72c9 100644
--- a/drivers/usb/host/xhci-hcd.c
+++ b/drivers/usb/host/xhci-hcd.c
@@ -995,6 +995,7 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 	u32 added_ctxs;
 	unsigned int last_ctx;
 	u32 new_add_flags, new_drop_flags, new_slot_info;
+	struct xhci_virt_device *virt_dev;
 	int ret = 0;
 
 	ret = xhci_check_args(hcd, udev, ep, 1, __func__);
@@ -1023,11 +1024,25 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 		return -EINVAL;
 	}
 
-	in_ctx = xhci->devs[udev->slot_id]->in_ctx;
-	out_ctx = xhci->devs[udev->slot_id]->out_ctx;
+	virt_dev = xhci->devs[udev->slot_id];
+	in_ctx = virt_dev->in_ctx;
+	out_ctx = virt_dev->out_ctx;
 	ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx);
 	ep_index = xhci_get_endpoint_index(&ep->desc);
 	ep_ctx = xhci_get_ep_ctx(xhci, out_ctx, ep_index);
+
+	/* If this endpoint is already in use, and the upper layers are trying
+	 * to add it again without dropping it, reject the addition.
+	 */
+	if (virt_dev->eps[ep_index].ring &&
+			!(le32_to_cpu(ctrl_ctx->drop_flags) &
+				xhci_get_endpoint_flag(&ep->desc))) {
+		xhci_warn(xhci, "Trying to add endpoint 0x%x "
+				"without dropping it.\n",
+				(unsigned int) ep->desc.bEndpointAddress);
+		return -EINVAL;
+	}
+
 	/* If the HCD has already noted the endpoint is enabled,
 	 * ignore this request.
 	 */
@@ -1042,8 +1057,7 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 	 * process context, not interrupt context (or so documenation
 	 * for usb_set_interface() and usb_set_configuration() claim).
 	 */
-	if (xhci_endpoint_init(xhci, xhci->devs[udev->slot_id],
-				udev, ep, GFP_KERNEL) < 0) {
+	if (xhci_endpoint_init(xhci, virt_dev, udev, ep, GFP_NOIO) < 0) {
 		dev_dbg(&udev->dev, "%s - could not initialize ep %#x\n",
 				__func__, ep->desc.bEndpointAddress);
 		return -ENOMEM;
diff --git a/drivers/watchdog/mtx-1_wdt.c b/drivers/watchdog/mtx-1_wdt.c
index 08e8a6a..e797a2c 100644
--- a/drivers/watchdog/mtx-1_wdt.c
+++ b/drivers/watchdog/mtx-1_wdt.c
@@ -211,6 +211,12 @@ static int __devinit mtx1_wdt_probe(struct platform_device *pdev)
 	int ret;
 
 	mtx1_wdt_device.gpio = pdev->resource[0].start;
+	ret = gpio_request_one(mtx1_wdt_device.gpio,
+				GPIOF_OUT_INIT_HIGH, "mtx1-wdt");
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to request gpio");
+		return ret;
+	}
 
 	spin_lock_init(&mtx1_wdt_device.lock);
 	init_completion(&mtx1_wdt_device.stop);
@@ -236,6 +242,8 @@ static int __devexit mtx1_wdt_remove(struct platform_device *pdev)
 		mtx1_wdt_device.queue = 0;
 		wait_for_completion(&mtx1_wdt_device.stop);
 	}
+
+	gpio_free(mtx1_wdt_device.gpio);
 	misc_deregister(&mtx1_wdt_misc);
 	return 0;
 }
diff --git a/fs/inode.c b/fs/inode.c
index 03dfeb2..4405e88 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -246,6 +246,20 @@ void destroy_inode(struct inode *inode)
 		kmem_cache_free(inode_cachep, (inode));
 }
 
+void address_space_init_once(struct address_space *mapping)
+{
+	memset(mapping, 0, sizeof(*mapping));
+	INIT_RADIX_TREE(&mapping->page_tree, GFP_ATOMIC);
+	spin_lock_init(&mapping->tree_lock);
+	spin_lock_init(&mapping->i_mmap_lock);
+	INIT_LIST_HEAD(&mapping->private_list);
+	spin_lock_init(&mapping->private_lock);
+	INIT_RAW_PRIO_TREE_ROOT(&mapping->i_mmap);
+	INIT_LIST_HEAD(&mapping->i_mmap_nonlinear);
+	mutex_init(&mapping->unmap_mutex);
+}
+EXPORT_SYMBOL(address_space_init_once);
+
 /*
  * These are initializations that only need to be done
  * once, because the fields are idempotent across use
@@ -257,13 +271,7 @@ void inode_init_once(struct inode *inode)
 	INIT_HLIST_NODE(&inode->i_hash);
 	INIT_LIST_HEAD(&inode->i_dentry);
 	INIT_LIST_HEAD(&inode->i_devices);
-	INIT_RADIX_TREE(&inode->i_data.page_tree, GFP_ATOMIC);
-	spin_lock_init(&inode->i_data.tree_lock);
-	spin_lock_init(&inode->i_data.i_mmap_lock);
-	INIT_LIST_HEAD(&inode->i_data.private_list);
-	spin_lock_init(&inode->i_data.private_lock);
-	INIT_RAW_PRIO_TREE_ROOT(&inode->i_data.i_mmap);
-	INIT_LIST_HEAD(&inode->i_data.i_mmap_nonlinear);
+	address_space_init_once(&inode->i_data);
 	i_size_ordered_init(inode);
 #ifdef CONFIG_INOTIFY
 	INIT_LIST_HEAD(&inode->inotify_watches);
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index 471e269..3c18687 100644
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -34,19 +34,6 @@
 #include "btnode.h"
 
 
-void nilfs_btnode_cache_init_once(struct address_space *btnc)
-{
-	memset(btnc, 0, sizeof(*btnc));
-	INIT_RADIX_TREE(&btnc->page_tree, GFP_ATOMIC);
-	spin_lock_init(&btnc->tree_lock);
-	INIT_LIST_HEAD(&btnc->private_list);
-	spin_lock_init(&btnc->private_lock);
-
-	spin_lock_init(&btnc->i_mmap_lock);
-	INIT_RAW_PRIO_TREE_ROOT(&btnc->i_mmap);
-	INIT_LIST_HEAD(&btnc->i_mmap_nonlinear);
-}
-
 static const struct address_space_operations def_btnode_aops = {
 	.sync_page		= block_sync_page,
 };
diff --git a/fs/nilfs2/btnode.h b/fs/nilfs2/btnode.h
index 07da83f..fa2f1e6 100644
--- a/fs/nilfs2/btnode.h
+++ b/fs/nilfs2/btnode.h
@@ -37,7 +37,6 @@ struct nilfs_btnode_chkey_ctxt {
 	struct buffer_head *newbh;
 };
 
-void nilfs_btnode_cache_init_once(struct address_space *);
 void nilfs_btnode_cache_init(struct address_space *, struct backing_dev_info *);
 void nilfs_btnode_cache_clear(struct address_space *);
 struct buffer_head *nilfs_btnode_create_block(struct address_space *btnc,
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 4d3ddcc..84dffd8 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -166,7 +166,7 @@ static void init_once(void *obj)
 #ifdef CONFIG_NILFS_XATTR
 	init_rwsem(&ii->xattr_sem);
 #endif
-	nilfs_btnode_cache_init_once(&ii->i_btnode_cache);
+	address_space_init_once(&ii->i_btnode_cache);
 	ii->i_bmap = (struct nilfs_bmap *)&ii->i_bmap_union;
 	inode_init_once(&ii->vfs_inode);
 }
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 18c435d..244adb7 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -50,6 +50,22 @@ struct bug_entry {
 #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while(0)
 #endif
 
+#define __WARN_RATELIMIT(condition, state, format...)		\
+({								\
+	int rtn = 0;						\
+	if (unlikely(__ratelimit(state)))			\
+		rtn = WARN(condition, format);			\
+	rtn;							\
+})
+
+#define WARN_RATELIMIT(condition, format...)			\
+({								\
+	static DEFINE_RATELIMIT_STATE(_rs,			\
+				      DEFAULT_RATELIMIT_INTERVAL,	\
+				      DEFAULT_RATELIMIT_BURST);	\
+	__WARN_RATELIMIT(condition, &_rs, format);		\
+})
+
 /*
  * WARN(), WARN_ON(), WARN_ON_ONCE, and so on can be used to report
  * significant issues that need prompt attention if they should ever
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 8a4a130..c5ada92 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -190,6 +190,7 @@ struct clocksource {
 #ifdef CONFIG_CLOCKSOURCE_WATCHDOG
 	/* Watchdog related data, used by the framework */
 	struct list_head wd_list;
+	cycle_t cs_last;
 	cycle_t wd_last;
 #endif
 };
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 899a4d6..d6b2ab5 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -637,6 +637,7 @@ struct address_space {
 	spinlock_t		private_lock;	/* for use by the address_space */
 	struct list_head	private_list;	/* ditto */
 	struct address_space	*assoc_mapping;	/* ditto */
+	struct mutex		unmap_mutex;    /* to protect unmapping */
 } __attribute__((aligned(sizeof(long))));
 	/*
 	 * On most architectures that alignment is already the case; but
@@ -2148,6 +2149,7 @@ extern loff_t vfs_llseek(struct file *file, loff_t offset, int origin);
 
 extern int inode_init_always(struct super_block *, struct inode *);
 extern void inode_init_once(struct inode *);
+extern void address_space_init_once(struct address_space *mapping);
 extern void inode_add_to_lists(struct super_block *, struct inode *);
 extern void iput(struct inode *);
 extern struct inode * igrab(struct inode *);
diff --git a/include/linux/if_packet.h b/include/linux/if_packet.h
index 4021d47..4abde2d 100644
--- a/include/linux/if_packet.h
+++ b/include/linux/if_packet.h
@@ -59,6 +59,7 @@ struct tpacket_auxdata {
 	__u16		tp_mac;
 	__u16		tp_net;
 	__u16		tp_vlan_tci;
+	__u16		tp_padding;
 };
 
 /* Rx ring - header status */
@@ -97,6 +98,7 @@ struct tpacket2_hdr {
 	__u32		tp_sec;
 	__u32		tp_nsec;
 	__u16		tp_vlan_tci;
+	__u16		tp_padding;
 };
 
 #define TPACKET2_HDRLEN		(TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))
diff --git a/include/net/netlink.h b/include/net/netlink.h
index 668ad04..5074fd6 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -384,7 +384,7 @@ static inline int nlmsg_parse(const struct nlmsghdr *nlh, int hdrlen,
  *
  * Returns the first attribute which matches the specified type.
  */
-static inline struct nlattr *nlmsg_find_attr(struct nlmsghdr *nlh,
+static inline struct nlattr *nlmsg_find_attr(const struct nlmsghdr *nlh,
 					     int hdrlen, int attrtype)
 {
 	return nla_find(nlmsg_attrdata(nlh, hdrlen),
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index a8520b0..356f487 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1120,9 +1120,19 @@ static unsigned long preallocate_image_pages(unsigned long nr_pages, gfp_t mask)
 	return nr_alloc;
 }
 
-static unsigned long preallocate_image_memory(unsigned long nr_pages)
+static unsigned long preallocate_image_memory(unsigned long nr_pages,
+					      unsigned long avail_normal)
 {
-	return preallocate_image_pages(nr_pages, GFP_IMAGE);
+	unsigned long alloc;
+
+	if (avail_normal <= alloc_normal)
+		return 0;
+
+	alloc = avail_normal - alloc_normal;
+	if (nr_pages < alloc)
+		alloc = nr_pages;
+
+	return preallocate_image_pages(alloc, GFP_IMAGE);
 }
 
 #ifdef CONFIG_HIGHMEM
@@ -1168,15 +1178,26 @@ static inline unsigned long preallocate_highmem_fraction(unsigned long nr_pages,
  */
 static void free_unnecessary_pages(void)
 {
-	unsigned long save_highmem, to_free_normal, to_free_highmem;
+	unsigned long save, to_free_normal, to_free_highmem;
 
-	to_free_normal = alloc_normal - count_data_pages();
-	save_highmem = count_highmem_pages();
-	if (alloc_highmem > save_highmem) {
-		to_free_highmem = alloc_highmem - save_highmem;
+	save = count_data_pages();
+	if (alloc_normal >= save) {
+		to_free_normal = alloc_normal - save;
+		save = 0;
+	} else {
+		to_free_normal = 0;
+		save -= alloc_normal;
+	}
+	save += count_highmem_pages();
+	if (alloc_highmem >= save) {
+		to_free_highmem = alloc_highmem - save;
 	} else {
 		to_free_highmem = 0;
-		to_free_normal -= save_highmem - alloc_highmem;
+		save -= alloc_highmem;
+		if (to_free_normal > save)
+			to_free_normal -= save;
+		else
+			to_free_normal = 0;
 	}
 
 	memory_bm_position_reset(&copy_bm);
@@ -1257,7 +1278,7 @@ int hibernate_preallocate_memory(void)
 {
 	struct zone *zone;
 	unsigned long saveable, size, max_size, count, highmem, pages = 0;
-	unsigned long alloc, save_highmem, pages_highmem;
+	unsigned long alloc, save_highmem, pages_highmem, avail_normal;
 	struct timeval start, stop;
 	int error;
 
@@ -1294,6 +1315,7 @@ int hibernate_preallocate_memory(void)
 		else
 			count += zone_page_state(zone, NR_FREE_PAGES);
 	}
+	avail_normal = count;
 	count += highmem;
 	count -= totalreserve_pages;
 
@@ -1308,12 +1330,21 @@ int hibernate_preallocate_memory(void)
 	 */
 	if (size >= saveable) {
 		pages = preallocate_image_highmem(save_highmem);
-		pages += preallocate_image_memory(saveable - pages);
+		pages += preallocate_image_memory(saveable - pages, avail_normal);
 		goto out;
 	}
 
 	/* Estimate the minimum size of the image. */
 	pages = minimum_image_size(saveable);
+	/*
+	 * To avoid excessive pressure on the normal zone, leave room in it to
+	 * accommodate an image of the minimum size (unless it's already too
+	 * small, in which case don't preallocate pages from it at all).
+	 */
+	if (avail_normal > pages)
+		avail_normal -= pages;
+	else
+		avail_normal = 0;
 	if (size < pages)
 		size = min_t(unsigned long, pages, max_size);
 
@@ -1334,16 +1365,34 @@ int hibernate_preallocate_memory(void)
 	 */
 	pages_highmem = preallocate_image_highmem(highmem / 2);
 	alloc = (count - max_size) - pages_highmem;
-	pages = preallocate_image_memory(alloc);
-	if (pages < alloc)
-		goto err_out;
-	size = max_size - size;
-	alloc = size;
-	size = preallocate_highmem_fraction(size, highmem, count);
-	pages_highmem += size;
-	alloc -= size;
-	pages += preallocate_image_memory(alloc);
-	pages += pages_highmem;
+	pages = preallocate_image_memory(alloc, avail_normal);
+	if (pages < alloc) {
+		/* We have exhausted non-highmem pages, try highmem. */
+		alloc -= pages;
+		pages += pages_highmem;
+		pages_highmem = preallocate_image_highmem(alloc);
+		if (pages_highmem < alloc)
+			goto err_out;
+		pages += pages_highmem;
+		/*
+		 * size is the desired number of saveable pages to leave in
+		 * memory, so try to preallocate (all memory - size) pages.
+		 */
+		alloc = (count - pages) - size;
+		pages += preallocate_image_highmem(alloc);
+	} else {
+		/*
+		 * There are approximately max_size saveable pages at this point
+		 * and we want to reduce this number down to size.
+		 */
+		alloc = max_size - size;
+		size = preallocate_highmem_fraction(alloc, highmem, count);
+		pages_highmem += size;
+		alloc -= size;
+		size = preallocate_image_memory(alloc, avail_normal);
+		pages_highmem += preallocate_image_highmem(alloc - size);
+		pages += pages_highmem + size;
+	}
 
 	/*
 	 * We only need as many page frames for the image as there are saveable
diff --git a/kernel/power/user.c b/kernel/power/user.c
index b135356..b15c3d7 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -113,8 +113,10 @@ static int snapshot_open(struct inode *inode, struct file *filp)
 		if (error)
 			pm_notifier_call_chain(PM_POST_RESTORE);
 	}
-	if (error)
+	if (error) {
+		free_basic_memory_bitmaps();
 		atomic_inc(&snapshot_device_available);
+	}
 	data->frozen = 0;
 	data->ready = 0;
 	data->platform_support = 0;
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index ea8384d..b080920 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -293,16 +293,18 @@ ret:
 static int add_del_listener(pid_t pid, const struct cpumask *mask, int isadd)
 {
 	struct listener_list *listeners;
-	struct listener *s, *tmp;
+	struct listener *s, *tmp, *s2;
 	unsigned int cpu;
 
 	if (!cpumask_subset(mask, cpu_possible_mask))
 		return -EINVAL;
 
+	s = NULL;
 	if (isadd == REGISTER) {
 		for_each_cpu(cpu, mask) {
-			s = kmalloc_node(sizeof(struct listener), GFP_KERNEL,
-					 cpu_to_node(cpu));
+			if (!s)
+				s = kmalloc_node(sizeof(struct listener),
+						 GFP_KERNEL, cpu_to_node(cpu));
 			if (!s)
 				goto cleanup;
 			s->pid = pid;
@@ -311,9 +313,16 @@ static int add_del_listener(pid_t pid, const struct cpumask *mask, int isadd)
 
 			listeners = &per_cpu(listener_array, cpu);
 			down_write(&listeners->sem);
+			list_for_each_entry_safe(s2, tmp, &listeners->list, list) {
+				if (s2->pid == pid)
+					goto next_cpu;
+			}
 			list_add(&s->list, &listeners->list);
+			s = NULL;
+next_cpu:
 			up_write(&listeners->sem);
 		}
+		kfree(s);
 		return 0;
 	}
 
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 7b26a3a..3022c27 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -184,7 +184,6 @@ static struct clocksource *watchdog;
 static struct timer_list watchdog_timer;
 static DECLARE_WORK(watchdog_work, clocksource_watchdog_work);
 static DEFINE_SPINLOCK(watchdog_lock);
-static cycle_t watchdog_last;
 static int watchdog_running;
 
 static int clocksource_watchdog_kthread(void *data);
@@ -253,11 +252,6 @@ static void clocksource_watchdog(unsigned long data)
 	if (!watchdog_running)
 		goto out;
 
-	wdnow = watchdog->read(watchdog);
-	wd_nsec = clocksource_cyc2ns((wdnow - watchdog_last) & watchdog->mask,
-				     watchdog->mult, watchdog->shift);
-	watchdog_last = wdnow;
-
 	list_for_each_entry(cs, &watchdog_list, wd_list) {
 
 		/* Clocksource already marked unstable? */
@@ -267,19 +261,28 @@ static void clocksource_watchdog(unsigned long data)
 			continue;
 		}
 
+		local_irq_disable();
 		csnow = cs->read(cs);
+		wdnow = watchdog->read(watchdog);
+		local_irq_enable();
 
 		/* Clocksource initialized ? */
 		if (!(cs->flags & CLOCK_SOURCE_WATCHDOG)) {
 			cs->flags |= CLOCK_SOURCE_WATCHDOG;
-			cs->wd_last = csnow;
+			cs->wd_last = wdnow;
+			cs->cs_last = csnow;
 			continue;
 		}
 
-		/* Check the deviation from the watchdog clocksource. */
-		cs_nsec = clocksource_cyc2ns((csnow - cs->wd_last) &
+		wd_nsec = clocksource_cyc2ns((wdnow - cs->wd_last) & watchdog->mask,
+					     watchdog->mult, watchdog->shift);
+
+		cs_nsec = clocksource_cyc2ns((csnow - cs->cs_last) &
 					     cs->mask, cs->mult, cs->shift);
-		cs->wd_last = csnow;
+		cs->cs_last = csnow;
+		cs->wd_last = wdnow;
+
+		/* Check the deviation from the watchdog clocksource. */
 		if (abs(cs_nsec - wd_nsec) > WATCHDOG_THRESHOLD) {
 			clocksource_unstable(cs, cs_nsec - wd_nsec);
 			continue;
@@ -317,7 +320,6 @@ static inline void clocksource_start_watchdog(void)
 		return;
 	init_timer(&watchdog_timer);
 	watchdog_timer.function = clocksource_watchdog;
-	watchdog_last = watchdog->read(watchdog);
 	watchdog_timer.expires = jiffies + WATCHDOG_INTERVAL;
 	add_timer_on(&watchdog_timer, cpumask_first(cpu_online_mask));
 	watchdog_running = 1;
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index a9a8996..e64b04c 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -196,7 +196,7 @@ static void free_object(struct debug_obj *obj)
 	 * initialized:
 	 */
 	if (obj_pool_free > ODEBUG_POOL_SIZE && obj_cache)
-		sched = !work_pending(&debug_obj_work);
+		sched = keventd_up() && !work_pending(&debug_obj_work);
 	hlist_add_head(&obj->node, &obj_pool);
 	obj_pool_free++;
 	obj_pool_used--;
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 3cdabc4..15c79a0 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1105,6 +1105,14 @@ static void __init gather_bootmem_prealloc(void)
 		WARN_ON(page_count(page) != 1);
 		prep_compound_huge_page(page, h->order);
 		prep_new_huge_page(h, page, page_to_nid(page));
+		/*
+		 * If we had gigantic hugepages allocated at boot time, we need
+		 * to restore the 'stolen' pages to totalram_pages in order to
+		 * fix confusing memory reports from free(1) and another
+		 * side-effects, like CommitLimit going negative.
+		 */
+		if (h->order > (MAX_ORDER - 1))
+			totalram_pages += 1 << h->order;
 	}
 }
 
diff --git a/mm/ksm.c b/mm/ksm.c
index 56a0da1..d991063 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1270,6 +1270,12 @@ static struct rmap_item *scan_get_next_rmap_item(struct page **page)
 		slot = list_entry(slot->mm_list.next, struct mm_slot, mm_list);
 		ksm_scan.mm_slot = slot;
 		spin_unlock(&ksm_mmlist_lock);
+		/*
+		 * Although we tested list_empty() above, a racing __ksm_exit
+		 * of the last mm on the list may have removed it since then.
+		 */
+		if (slot == &ksm_mm_head)
+			return NULL;
 next_mm:
 		ksm_scan.address = 0;
 		ksm_scan.rmap_list = &slot->rmap_list;
diff --git a/mm/memory.c b/mm/memory.c
index e298c6f..5df9a03 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2459,6 +2459,7 @@ void unmap_mapping_range(struct address_space *mapping,
 		details.last_index = ULONG_MAX;
 	details.i_mmap_lock = &mapping->i_mmap_lock;
 
+	mutex_lock(&mapping->unmap_mutex);
 	spin_lock(&mapping->i_mmap_lock);
 
 	/* Protect against endless unmapping loops */
@@ -2475,6 +2476,7 @@ void unmap_mapping_range(struct address_space *mapping,
 	if (unlikely(!list_empty(&mapping->i_mmap_nonlinear)))
 		unmap_mapping_range_list(&mapping->i_mmap_nonlinear, &details);
 	spin_unlock(&mapping->i_mmap_lock);
+	mutex_unlock(&mapping->unmap_mutex);
 }
 EXPORT_SYMBOL(unmap_mapping_range);
 
diff --git a/mm/migrate.c b/mm/migrate.c
index 880bd59..2cbae19 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -261,7 +261,7 @@ static int migrate_page_move_mapping(struct address_space *mapping,
 	 */
 	__dec_zone_page_state(page, NR_FILE_PAGES);
 	__inc_zone_page_state(newpage, NR_FILE_PAGES);
-	if (PageSwapBacked(page)) {
+	if (!PageSwapCache(page) && PageSwapBacked(page)) {
 		__dec_zone_page_state(page, NR_SHMEM);
 		__inc_zone_page_state(newpage, NR_SHMEM);
 	}
diff --git a/net/core/filter.c b/net/core/filter.c
index 08db7b9..fb00d6c 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -285,7 +285,9 @@ load_b:
 			mem[fentry->k] = X;
 			continue;
 		default:
-			WARN_ON(1);
+			WARN_RATELIMIT(1, "Unknown code:%u jt:%u tf:%u k:%u\n",
+				       fentry->code, fentry->jt,
+				       fentry->jf, fentry->k);
 			return 0;
 		}
 
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 7d12c6a..8227dfa 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -461,6 +461,9 @@ int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 	if (addr_len < sizeof(struct sockaddr_in))
 		goto out;
 
+	if (addr->sin_family != AF_INET)
+		goto out;
+
 	chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
 
 	/* Not specified by any standard per-se, however it breaks too
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 571cc2a..94ca0cd 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -436,7 +436,7 @@ static int valid_cc(const void *bc, int len, int cc)
 			return 0;
 		if (cc == len)
 			return 1;
-		if (op->yes < 4)
+		if (op->yes < 4 || op->yes & 3)
 			return 0;
 		len -= op->yes;
 		bc  += op->yes;
@@ -446,11 +446,11 @@ static int valid_cc(const void *bc, int len, int cc)
 
 static int inet_diag_bc_audit(const void *bytecode, int bytecode_len)
 {
-	const unsigned char *bc = bytecode;
+	const void *bc = bytecode;
 	int  len = bytecode_len;
 
 	while (len > 0) {
-		struct inet_diag_bc_op *op = (struct inet_diag_bc_op *)bc;
+		const struct inet_diag_bc_op *op = bc;
 
 //printk("BC: %d %d %d {%d} / %d\n", op->code, op->yes, op->no, op[1].no, len);
 		switch (op->code) {
@@ -461,22 +461,20 @@ static int inet_diag_bc_audit(const void *bytecode, int bytecode_len)
 		case INET_DIAG_BC_S_LE:
 		case INET_DIAG_BC_D_GE:
 		case INET_DIAG_BC_D_LE:
-			if (op->yes < 4 || op->yes > len + 4)
-				return -EINVAL;
 		case INET_DIAG_BC_JMP:
-			if (op->no < 4 || op->no > len + 4)
+			if (op->no < 4 || op->no > len + 4 || op->no & 3)
 				return -EINVAL;
 			if (op->no < len &&
 			    !valid_cc(bytecode, bytecode_len, len - op->no))
 				return -EINVAL;
 			break;
 		case INET_DIAG_BC_NOP:
-			if (op->yes < 4 || op->yes > len + 4)
-				return -EINVAL;
 			break;
 		default:
 			return -EINVAL;
 		}
+		if (op->yes < 4 || op->yes > len + 4 || op->yes & 3)
+			return -EINVAL;
 		bc  += op->yes;
 		len -= op->yes;
 	}
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 659f3b2..743a121 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1203,6 +1203,9 @@ csum_copy_err:
 
 	if (noblock)
 		return -EAGAIN;
+
+	/* starting over for a new packet */
+	msg->msg_flags &= ~MSG_TRUNC;
 	goto try_again;
 }
 
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index e55aa9c..3e9969b 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -441,8 +441,11 @@ csum_copy_err:
 	}
 	release_sock(sk);
 
-	if (flags & MSG_DONTWAIT)
+	if (noblock)
 		return -EAGAIN;
+
+	/* starting over for a new packet */
+	msg->msg_flags &= ~MSG_TRUNC;
 	goto try_again;
 }
 
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 24084ff..39d85a9 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -759,6 +759,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
 		h.h2->tp_sec = ts.tv_sec;
 		h.h2->tp_nsec = ts.tv_nsec;
 		h.h2->tp_vlan_tci = vlan_tx_tag_get(skb);
+		h.h2->tp_padding = 0;
 		hdrlen = sizeof(*h.h2);
 		break;
 	default:
@@ -1495,6 +1496,7 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock,
 		aux.tp_net = skb_network_offset(skb);
 		aux.tp_vlan_tci = vlan_tx_tag_get(skb);
 
+		aux.tp_padding = 0;
 		put_cmsg(msg, SOL_PACKET, PACKET_AUXDATA, sizeof(aux), &aux);
 	}
 
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 50346a6..0078912 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -548,13 +548,13 @@ retry:
 	}
 	inode = &gss_msg->inode->vfs_inode;
 	for (;;) {
-		prepare_to_wait(&gss_msg->waitqueue, &wait, TASK_INTERRUPTIBLE);
+		prepare_to_wait(&gss_msg->waitqueue, &wait, TASK_KILLABLE);
 		spin_lock(&inode->i_lock);
 		if (gss_msg->ctx != NULL || gss_msg->msg.errno < 0) {
 			break;
 		}
 		spin_unlock(&inode->i_lock);
-		if (signalled()) {
+		if (fatal_signal_pending(current)) {
 			err = -ERESTARTSYS;
 			goto out_intr;
 		}
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 154034b..20b989e 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -938,7 +938,7 @@ call_allocate(struct rpc_task *task)
 
 	dprintk("RPC: %5u rpc_buffer allocation failed\n", task->tk_pid);
 
-	if (RPC_IS_ASYNC(task) || !signalled()) {
+	if (RPC_IS_ASYNC(task) || !fatal_signal_pending(current)) {
 		task->tk_action = call_allocate;
 		rpc_delay(task, HZ>>4);
 		return;
--
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