+++ /dev/null
-From 4bf25ac76b51c1ea05eb2dca2dcb3961bf01e1f4 Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Mon, 10 Mar 2025 16:09:34 -0700
-Subject: memcg: drain obj stock on cpu hotplug teardown
-
-From: Shakeel Butt <shakeel.butt@linux.dev>
-
-[ Upstream commit 9f01b4954490d4ccdbcc2b9be34a9921ceee9cbb ]
-
-Currently on cpu hotplug teardown, only memcg stock is drained but we
-need to drain the obj stock as well otherwise we will miss the stats
-accumulated on the target cpu as well as the nr_bytes cached. The stats
-include MEMCG_KMEM, NR_SLAB_RECLAIMABLE_B & NR_SLAB_UNRECLAIMABLE_B. In
-addition we are leaking reference to struct obj_cgroup object.
-
-Link: https://lkml.kernel.org/r/20250310230934.2913113-1-shakeel.butt@linux.dev
-Fixes: bf4f059954dc ("mm: memcg/slab: obj_cgroup API")
-Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
-Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
-Acked-by: Johannes Weiner <hannes@cmpxchg.org>
-Cc: Michal Hocko <mhocko@kernel.org>
-Cc: Muchun Song <muchun.song@linux.dev>
-Cc: <stable@vger.kernel.org>
-Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- mm/memcontrol.c | 9 +++++++++
- 1 file changed, 9 insertions(+)
-
-diff --git a/mm/memcontrol.c b/mm/memcontrol.c
-index 3f7cab196eb62..8c586133abb7c 100644
---- a/mm/memcontrol.c
-+++ b/mm/memcontrol.c
-@@ -2368,9 +2368,18 @@ static void drain_all_stock(struct mem_cgroup *root_memcg)
- static int memcg_hotplug_cpu_dead(unsigned int cpu)
- {
- struct memcg_stock_pcp *stock;
-+ struct obj_cgroup *old;
-+ unsigned long flags;
-
- stock = &per_cpu(memcg_stock, cpu);
-+
-+ /* drain_obj_stock requires stock_lock */
-+ local_lock_irqsave(&memcg_stock.stock_lock, flags);
-+ old = drain_obj_stock(stock);
-+ local_unlock_irqrestore(&memcg_stock.stock_lock, flags);
-+
- drain_stock(stock);
-+ obj_cgroup_put(old);
-
- return 0;
- }
---
-2.39.5
-
module-sign-with-sha512-instead-of-sha1-by-default.patch
-memcg-drain-obj-stock-on-cpu-hotplug-teardown.patch
tracing-add-__cpumask-to-denote-a-trace-event-field-.patch
tracing-fix-cpumask-example-typo.patch
tracing-add-__string_len-example.patch
+++ /dev/null
-From b46064a18810bad3aea089a79993ca5ea7a3d2b2 Mon Sep 17 00:00:00 2001
-From: Robin Murphy <robin.murphy@arm.com>
-Date: Fri, 28 Feb 2025 15:46:30 +0000
-Subject: iommu: Handle race with default domain setup
-
-From: Robin Murphy <robin.murphy@arm.com>
-
-commit b46064a18810bad3aea089a79993ca5ea7a3d2b2 upstream.
-
-It turns out that deferred default domain creation leaves a subtle
-race window during iommu_device_register() wherein a client driver may
-asynchronously probe in parallel and get as far as performing DMA API
-operations with dma-direct, only to be switched to iommu-dma underfoot
-once the default domain attachment finally happens, with obviously
-disastrous consequences. Even the wonky of_iommu_configure() path is at
-risk, since iommu_fwspec_init() will no longer defer client probe as the
-instance ops are (necessarily) already registered, and the "replay"
-iommu_probe_device() call can see dev->iommu_group already set and so
-think there's nothing to do either.
-
-Fortunately we already have the right tool in the right place in the
-form of iommu_device_use_default_domain(), which just needs to ensure
-that said default domain is actually ready to *be* used. Deferring the
-client probe shouldn't have too much impact, given that this only
-happens while the IOMMU driver is probing, and thus due to kick the
-deferred probe list again once it finishes.
-
-Reported-by: Charan Teja Kalla <quic_charante@quicinc.com>
-Fixes: 98ac73f99bc4 ("iommu: Require a default_domain for all iommu drivers")
-Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
-Signed-off-by: Robin Murphy <robin.murphy@arm.com>
-Link: https://lore.kernel.org/r/e88b94c9b575034a2c98a48b3d383654cbda7902.1740753261.git.robin.murphy@arm.com
-Signed-off-by: Joerg Roedel <jroedel@suse.de>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- drivers/iommu/iommu.c | 16 ++++++++++++++++
- 1 file changed, 16 insertions(+)
-
---- a/drivers/iommu/iommu.c
-+++ b/drivers/iommu/iommu.c
-@@ -566,6 +566,17 @@ int iommu_probe_device(struct device *de
- mutex_lock(&iommu_probe_device_lock);
- ret = __iommu_probe_device(dev, NULL);
- mutex_unlock(&iommu_probe_device_lock);
-+
-+ /*
-+ * The dma_configure replay paths need bus_iommu_probe() to
-+ * finish before they can call arch_setup_dma_ops()
-+ */
-+ if (IS_ENABLED(CONFIG_IOMMU_DMA) && !ret && dev->iommu_group) {
-+ mutex_lock(&dev->iommu_group->mutex);
-+ if (!dev->iommu_group->default_domain)
-+ ret = -EPROBE_DEFER;
-+ mutex_unlock(&dev->iommu_group->mutex);
-+ }
- if (ret)
- return ret;
-
-@@ -3149,6 +3160,11 @@ int iommu_device_use_default_domain(stru
- return 0;
-
- mutex_lock(&group->mutex);
-+ /* We may race against bus_iommu_probe() finalising groups here */
-+ if (IS_ENABLED(CONFIG_IOMMU_DMA) && !group->default_domain) {
-+ ret = -EPROBE_DEFER;
-+ goto unlock_out;
-+ }
- if (group->owner_cnt) {
- if (group->owner || !iommu_is_default_domain(group) ||
- !xa_empty(&group->pasid_array)) {
+++ /dev/null
-From 39e286a6981e02a7d95283925a8da6b714a2e347 Mon Sep 17 00:00:00 2001
-From: Sasha Levin <sashal@kernel.org>
-Date: Mon, 10 Mar 2025 16:09:34 -0700
-Subject: memcg: drain obj stock on cpu hotplug teardown
-
-From: Shakeel Butt <shakeel.butt@linux.dev>
-
-[ Upstream commit 9f01b4954490d4ccdbcc2b9be34a9921ceee9cbb ]
-
-Currently on cpu hotplug teardown, only memcg stock is drained but we
-need to drain the obj stock as well otherwise we will miss the stats
-accumulated on the target cpu as well as the nr_bytes cached. The stats
-include MEMCG_KMEM, NR_SLAB_RECLAIMABLE_B & NR_SLAB_UNRECLAIMABLE_B. In
-addition we are leaking reference to struct obj_cgroup object.
-
-Link: https://lkml.kernel.org/r/20250310230934.2913113-1-shakeel.butt@linux.dev
-Fixes: bf4f059954dc ("mm: memcg/slab: obj_cgroup API")
-Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
-Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
-Acked-by: Johannes Weiner <hannes@cmpxchg.org>
-Cc: Michal Hocko <mhocko@kernel.org>
-Cc: Muchun Song <muchun.song@linux.dev>
-Cc: <stable@vger.kernel.org>
-Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-Signed-off-by: Sasha Levin <sashal@kernel.org>
----
- mm/memcontrol.c | 9 +++++++++
- 1 file changed, 9 insertions(+)
-
-diff --git a/mm/memcontrol.c b/mm/memcontrol.c
-index 9bf5a69e20d87..ab9afcd372a93 100644
---- a/mm/memcontrol.c
-+++ b/mm/memcontrol.c
-@@ -2378,9 +2378,18 @@ static void drain_all_stock(struct mem_cgroup *root_memcg)
- static int memcg_hotplug_cpu_dead(unsigned int cpu)
- {
- struct memcg_stock_pcp *stock;
-+ struct obj_cgroup *old;
-+ unsigned long flags;
-
- stock = &per_cpu(memcg_stock, cpu);
-+
-+ /* drain_obj_stock requires stock_lock */
-+ local_lock_irqsave(&memcg_stock.stock_lock, flags);
-+ old = drain_obj_stock(stock);
-+ local_unlock_irqrestore(&memcg_stock.stock_lock, flags);
-+
- drain_stock(stock);
-+ obj_cgroup_put(old);
-
- return 0;
- }
---
-2.39.5
-
module-sign-with-sha512-instead-of-sha1-by-default.patch
-memcg-drain-obj-stock-on-cpu-hotplug-teardown.patch
x86-extable-remove-unused-fixup-type-ex_type_copy.patch
x86-mce-use-is_copy_from_user-to-determine-copy-from.patch
tracing-add-__string_len-example.patch
net-dsa-mv88e6xxx-enable-pvt-for-6321-switch.patch
net-dsa-mv88e6xxx-enable-.port_set_policy-for-6320-family.patch
net-dsa-mv88e6xxx-enable-stu-methods-for-6320-family.patch
-iommu-handle-race-with-default-domain-setup.patch
mips-cm-fix-warning-if-mips_cm-is-disabled.patch
nvme-fixup-scan-failure-for-non-ana-multipath-controllers.patch
objtool-ignore-end-of-section-jumps-for-kcov-gcov.patch
projects / thirdparty / kernel / stable-queue.git / commitdiff
