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Date: Mon, 10 Dec 2012 11:47:55 -0800
From: Greg KH <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
torvalds@...ux-foundation.org, stable@...r.kernel.org
Cc: lwn@....net, Jiri Slaby <jslaby@...e.cz>
Subject: Re: Linux 3.0.56
diff --git a/Makefile b/Makefile
index 06df950..b639af3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 0
-SUBLEVEL = 55
+SUBLEVEL = 56
EXTRAVERSION =
NAME = Sneaky Weasel
diff --git a/arch/arm/mach-dove/include/mach/pm.h b/arch/arm/mach-dove/include/mach/pm.h
index 3ad9f94..11799c3 100644
--- a/arch/arm/mach-dove/include/mach/pm.h
+++ b/arch/arm/mach-dove/include/mach/pm.h
@@ -45,7 +45,7 @@ static inline int pmu_to_irq(int pin)
static inline int irq_to_pmu(int irq)
{
- if (IRQ_DOVE_PMU_START < irq && irq < NR_IRQS)
+ if (IRQ_DOVE_PMU_START <= irq && irq < NR_IRQS)
return irq - IRQ_DOVE_PMU_START;
return -EINVAL;
diff --git a/arch/arm/mach-dove/irq.c b/arch/arm/mach-dove/irq.c
index f07fd16..9f2fd10 100644
--- a/arch/arm/mach-dove/irq.c
+++ b/arch/arm/mach-dove/irq.c
@@ -61,8 +61,20 @@ static void pmu_irq_ack(struct irq_data *d)
int pin = irq_to_pmu(d->irq);
u32 u;
+ /*
+ * The PMU mask register is not RW0C: it is RW. This means that
+ * the bits take whatever value is written to them; if you write
+ * a '1', you will set the interrupt.
+ *
+ * Unfortunately this means there is NO race free way to clear
+ * these interrupts.
+ *
+ * So, let's structure the code so that the window is as small as
+ * possible.
+ */
u = ~(1 << (pin & 31));
- writel(u, PMU_INTERRUPT_CAUSE);
+ u &= readl_relaxed(PMU_INTERRUPT_CAUSE);
+ writel_relaxed(u, PMU_INTERRUPT_CAUSE);
}
static struct irq_chip pmu_irq_chip = {
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index 5ef1f4c..055952e 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -722,11 +722,14 @@ int scsi_verify_blk_ioctl(struct block_device *bd, unsigned int cmd)
break;
}
+ if (capable(CAP_SYS_RAWIO))
+ return 0;
+
/* In particular, rule out all resets and host-specific ioctls. */
printk_ratelimited(KERN_WARNING
"%s: sending ioctl %x to a partition!\n", current->comm, cmd);
- return capable(CAP_SYS_RAWIO) ? 0 : -ENOTTY;
+ return -ENOTTY;
}
EXPORT_SYMBOL(scsi_verify_blk_ioctl);
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index a4e0f1b..6da4f07 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -409,6 +409,7 @@ static void acpi_processor_notify(struct acpi_device *device, u32 event)
acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event, 0);
+ break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 7adba11..645f8aa 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -759,6 +759,22 @@ static const struct dmi_system_id intel_no_lvds[] = {
DMI_MATCH(DMI_BOARD_NAME, "ZBOXSD-ID12/ID13"),
},
},
+ {
+ .callback = intel_no_lvds_dmi_callback,
+ .ident = "Gigabyte GA-D525TUD",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."),
+ DMI_MATCH(DMI_BOARD_NAME, "D525TUD"),
+ },
+ },
+ {
+ .callback = intel_no_lvds_dmi_callback,
+ .ident = "Supermicro X7SPA-H",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "X7SPA-H"),
+ },
+ },
{ } /* terminating entry */
};
diff --git a/kernel/sched_autogroup.c b/kernel/sched_autogroup.c
index 429242f..f280df1 100644
--- a/kernel/sched_autogroup.c
+++ b/kernel/sched_autogroup.c
@@ -160,15 +160,11 @@ autogroup_move_group(struct task_struct *p, struct autogroup *ag)
p->signal->autogroup = autogroup_kref_get(ag);
- if (!ACCESS_ONCE(sysctl_sched_autogroup_enabled))
- goto out;
-
t = p;
do {
sched_move_task(t);
} while_each_thread(p, t);
-out:
unlock_task_sighand(p, &flags);
autogroup_kref_put(prev);
}
diff --git a/kernel/sched_autogroup.h b/kernel/sched_autogroup.h
index 0557705..7b859ff 100644
--- a/kernel/sched_autogroup.h
+++ b/kernel/sched_autogroup.h
@@ -1,11 +1,6 @@
#ifdef CONFIG_SCHED_AUTOGROUP
struct autogroup {
- /*
- * reference doesn't mean how many thread attach to this
- * autogroup now. It just stands for the number of task
- * could use this autogroup.
- */
struct kref kref;
struct task_group *tg;
struct rw_semaphore lock;
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index aef9452..472cfe3 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -2044,8 +2044,10 @@ static int rescuer_thread(void *__wq)
repeat:
set_current_state(TASK_INTERRUPTIBLE);
- if (kthread_should_stop())
+ if (kthread_should_stop()) {
+ __set_current_state(TASK_RUNNING);
return 0;
+ }
/*
* See whether any cpu is asking for help. Unbounded
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 2f49dcf..eace560 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1382,9 +1382,17 @@ int soft_offline_page(struct page *page, int flags)
{
int ret;
unsigned long pfn = page_to_pfn(page);
+ struct page *hpage = compound_trans_head(page);
if (PageHuge(page))
return soft_offline_huge_page(page, flags);
+ if (PageTransHuge(hpage)) {
+ if (PageAnon(hpage) && unlikely(split_huge_page(hpage))) {
+ pr_info("soft offline: %#lx: failed to split THP\n",
+ pfn);
+ return -EBUSY;
+ }
+ }
ret = get_any_page(page, pfn, flags);
if (ret < 0)
diff --git a/mm/sparse.c b/mm/sparse.c
index 4cd05e5..9054f83 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -619,7 +619,7 @@ static void __kfree_section_memmap(struct page *memmap, unsigned long nr_pages)
{
return; /* XXX: Not implemented yet */
}
-static void free_map_bootmem(struct page *page, unsigned long nr_pages)
+static void free_map_bootmem(struct page *memmap, unsigned long nr_pages)
{
}
#else
@@ -660,10 +660,11 @@ static void __kfree_section_memmap(struct page *memmap, unsigned long nr_pages)
get_order(sizeof(struct page) * nr_pages));
}
-static void free_map_bootmem(struct page *page, unsigned long nr_pages)
+static void free_map_bootmem(struct page *memmap, unsigned long nr_pages)
{
unsigned long maps_section_nr, removing_section_nr, i;
unsigned long magic;
+ struct page *page = virt_to_page(memmap);
for (i = 0; i < nr_pages; i++, page++) {
magic = (unsigned long) page->lru.next;
@@ -712,13 +713,10 @@ static void free_section_usemap(struct page *memmap, unsigned long *usemap)
*/
if (memmap) {
- struct page *memmap_page;
- memmap_page = virt_to_page(memmap);
-
nr_pages = PAGE_ALIGN(PAGES_PER_SECTION * sizeof(struct page))
>> PAGE_SHIFT;
- free_map_bootmem(memmap_page, nr_pages);
+ free_map_bootmem(memmap, nr_pages);
}
}
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 6b95f74..5ff2614 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1374,6 +1374,7 @@ static int check_peer_redir(struct dst_entry *dst, struct inet_peer *peer)
struct rtable *rt = (struct rtable *) dst;
__be32 orig_gw = rt->rt_gateway;
struct neighbour *n, *old_n;
+ struct hh_cache *old_hh;
dst_confirm(&rt->dst);
@@ -1381,6 +1382,9 @@ static int check_peer_redir(struct dst_entry *dst, struct inet_peer *peer)
n = __arp_bind_neighbour(&rt->dst, rt->rt_gateway);
if (IS_ERR(n))
return PTR_ERR(n);
+ old_hh = xchg(&rt->dst.hh, NULL);
+ if (old_hh)
+ hh_cache_put(old_hh);
old_n = xchg(&rt->dst._neighbour, n);
if (old_n)
neigh_release(old_n);
--
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