September 2025 - Linux-stable-mirror

Backport request for commit 5326ab737a47 ("virtio_console: fix order of fields cols and rows")

by Filip Hejsek

Hi, I would like to request backporting 5326ab737a47 ("virtio_console: fix order of fields cols and rows") to all LTS kernels. I'm working on QEMU patches that add virtio console size support. Without the fix, rows and columns will be swapped. As far as I know, there are no device implementations that use the wrong order and would by broken by the fix. Note: A previous version [1] of the patch contained "Cc: stable" and "Fixes:" tags, but they seem to have been accidentally left out from the final version. [1]: https://lore.kernel.org/all/20250320172654.624657-1-maxbr@linux.ibm.com/ Thanks, Filip Hejsek

3 weeks, 2 days

2
5
0 0

[PATCH] arm64: dts: rockchip: Fix broken tsadc pinctrl binding for rk3588

by Alexander Shiyan

There is no pinctrl "gpio" and "otpout" (probably designed as "output") handling in the tsadc driver. Let's use proper binding "default" and "sleep". Fixes: 32641b8ab1a5 ("arm64: dts: rockchip: add rk3588 thermal sensor") Cc: stable(a)vger.kernel.org Signed-off-by: Alexander Shiyan <eagle.alexander923(a)gmail.com> --- arch/arm64/boot/dts/rockchip/rk3588-base.dtsi | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi index a337f3fb8377..f141065eb69d 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi @@ -2667,9 +2667,9 @@ tsadc: tsadc@fec00000 { rockchip,hw-tshut-temp = <120000>; rockchip,hw-tshut-mode = <0>; /* tshut mode 0:CRU 1:GPIO */ rockchip,hw-tshut-polarity = <0>; /* tshut polarity 0:LOW 1:HIGH */ - pinctrl-0 = <&tsadc_gpio_func>; - pinctrl-1 = <&tsadc_shut>; - pinctrl-names = "gpio", "otpout"; + pinctrl-0 = <&tsadc_shut>; + pinctrl-1 = <&tsadc_gpio_func>; + pinctrl-names = "default", "sleep"; #thermal-sensor-cells = <1>; status = "disabled"; }; -- 2.39.1

3 weeks, 3 days

4
23
0 0

[PATCH 1/2] soc: amlogic: canvas: fix device leak on lookup

by Johan Hovold

Make sure to drop the reference taken to the canvas platform device when looking up its driver data. Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference. Also note that commit 28f851e6afa8 ("soc: amlogic: canvas: add missing put_device() call in meson_canvas_get()") fixed the leak in a lookup error path, but the reference is still leaking on success. Fixes: d4983983d987 ("soc: amlogic: add meson-canvas driver") Cc: stable(a)vger.kernel.org # 4.20: 28f851e6afa8 Cc: Yu Kuai <yukuai3(a)huawei.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/soc/amlogic/meson-canvas.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/soc/amlogic/meson-canvas.c b/drivers/soc/amlogic/meson-canvas.c index b6e06c4d2117..0711088da5dc 100644 --- a/drivers/soc/amlogic/meson-canvas.c +++ b/drivers/soc/amlogic/meson-canvas.c @@ -73,10 +73,9 @@ struct meson_canvas *meson_canvas_get(struct device *dev) * current state, this driver probe cannot return -EPROBE_DEFER */ canvas = dev_get_drvdata(&canvas_pdev->dev); - if (!canvas) { - put_device(&canvas_pdev->dev); + put_device(&canvas_pdev->dev); + if (!canvas) return ERR_PTR(-EINVAL); - } return canvas; } -- 2.49.1

3 weeks, 4 days

3
2
0 0

[PATCH 0/2] PCI: Fix ACS enablement for Root Ports in DT platforms

by Manivannan Sadhasivam via B4 Relay

Hi, This series fixes the long standing issue with ACS in DT platforms. There are two fixes in this series, both fixing independent issues on their own, but both are needed to properly enable ACS on DT platforms (well, patch 1 is only needed for Juno board, but that was a blocker for patch 2, more below...). Issue(s) background =================== Back in 2024, Xingang Wang first noted a failure in attaching the HiSilicon SEC device to QEMU ARM64 pci-root-port device [1]. He then tracked down the issue to ACS not being enabled for the QEMU Root Port device and he proposed a patch to fix it [2]. Once the patch got applied, people reported PCIe issues with linux-next on the ARM Juno Development boards, where they saw failure in enumerating the endpoint devices [3][4]. So soon, the patch got dropped, but the actual issue with the ARM Juno boards was left behind. Fast forward to 2024, Pavan resubmitted the same fix [5] for his own usecase, hoping that someone in the community would fix the issue with ARM Juno boards. But the patch was rightly rejected, as a patch that was known to cause issues should not be merged to the kernel. But again, no one investigated the Juno issue and it was left behind again. Now it ended up in my plate and I managed to track down the issue with the help of Naresh who got access to the Juno boards in LKFT. The Juno issue is with the PCIe switch from Microsemi/IDT, which triggers ACS Source Validation error on Completions received for the Configuration Read Request from a device connected to the downstream port that has not yet captured the PCIe bus number. As per the PCIe spec r6.0 sec 2.2.6.2, "Functions must capture the Bus and Device Numbers supplied with all Type 0 Configuration Write Requests completed by the Function and supply these numbers in the Bus and Device Number fields of the Requester ID for all Requests". So during the first Configuration Read Request issued by the switch downstream port during enumeration (for reading Vendor ID), Bus and Device numbers will be unknown to the device. So it responds to the Read Request with Completion having Bus and Device number as 0. The switch interprets the Completion as an ACS Source Validation error and drops the completion, leading to the failure in detecting the endpoint device. Though the PCIe spec r6.0, sec 6.12.1.1, states that "Completions are never affected by ACS Source Validation". This behavior is in violation of the spec. This issue was already found and addressed with a quirk for a different device from Microsemi with 'commit, aa667c6408d2 ("PCI: Workaround IDT switch ACS Source Validation erratum")'. Apparently, this issue seems to be documented in the erratum #36 of IDT 89H32H8G3-YC, which is not publicly available. Solution for Juno issue ======================= To fix this issue, I've extended the quirk to the Device ID of the switch found in Juno R2 boards. I believe the same switch is also present in Juno R1 board as well. With Patch 1, the Juno R2 boards can now detect the endpoints even with ACS enabled for the Switch downstream ports. Finally, I added patch 2 that properly enables ACS for all the PCI devices on DT platforms. It should be noted that even without patch 2 which enables ACS for the Root Port, the Juno boards were failing since 'commit, bcb81ac6ae3c ("iommu: Get DT/ACPI parsing into the proper probe path")' as reported in LKFT [6]. I believe, this commit made sure pci_request_acs() gets called before the enumeration of the switch downstream ports. The LKFT team ended up disabling ACS using cmdline param 'pci=config_acs=000000@pci:0:0'. So I added the above mentioned commit as a Fixes tag for patch 1. Also, to mitigate this issue, one could enumerate all the PCIe devices in bootloader without enabling ACS (as also noted by Robin in the LKFT thread). This will make sure that the endpoint device has a valid bus number when it responds to the first Configuration Read Request from the switch downstream port. So the ACS Source Validation error doesn't get triggered. Solution for ACS issue ====================== To fix this issue, I've kept the patch from Xingang as is (with rewording of the patch subject/description). This patch moves the pci_request_acs() call to devm_of_pci_bridge_init(), which gets called during the host bridge registration. This makes sure that the 'pci_acs_enable' flag set by pci_request_acs() is getting set before the enumeration of the Root Port device. So now, ACS will be enabled for all ACS capable devices of DT platforms. [1] https://lore.kernel.org/all/038397a6-57e2-b6fc-6e1c-7c03b7be9d96@huawei.com [2] https://lore.kernel.org/all/1621566204-37456-1-git-send-email-wangxingang5@… [3] https://lore.kernel.org/all/01314d70-41e6-70f9-e496-84091948701a@samsung.com [4] https://lore.kernel.org/all/CADYN=9JWU3CMLzMEcD5MSQGnaLyDRSKc5SofBFHUax6YuT… [5] https://lore.kernel.org/linux-pci/20241107-pci_acs_fix-v1-1-185a2462a571@qu… [6] https://lists.linaro.org/archives/list/lkft-triage@lists.linaro.org/message… Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam(a)oss.qualcomm.com> --- Manivannan Sadhasivam (1): PCI: Extend pci_idt_bus_quirk() for IDT switch with Device ID 0x8090 Xingang Wang (1): iommu/of: Call pci_request_acs() before enumerating the Root Port device drivers/iommu/of_iommu.c | 1 - drivers/pci/of.c | 8 +++++++- drivers/pci/probe.c | 2 +- 3 files changed, 8 insertions(+), 3 deletions(-) --- base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 change-id: 20250910-pci-acs-cb4fa3983a2c Best regards, -- Manivannan Sadhasivam <manivannan.sadhasivam(a)oss.qualcomm.com>

3 weeks, 4 days

7
13
0 0

[PATCH v7 1/3] drm/buddy: Optimize free block management with RB tree

by Arunpravin Paneer Selvam

Replace the freelist (O(n)) used for free block management with a red-black tree, providing more efficient O(log n) search, insert, and delete operations. This improves scalability and performance when managing large numbers of free blocks per order (e.g., hundreds or thousands). In the VK-CTS memory stress subtest, the buddy manager merges fragmented memory and inserts freed blocks into the freelist. Since freelist insertion is O(n), this becomes a bottleneck as fragmentation increases. Benchmarking shows list_insert_sorted() consumes ~52.69% CPU with the freelist, compared to just 0.03% with the RB tree (rbtree_insert.isra.0), despite performing the same sorted insert. This also improves performance in heavily fragmented workloads, such as games or graphics tests that stress memory. As the buddy allocator evolves with new features such as clear-page tracking, the resulting fragmentation and complexity have grown. These RB-tree based design changes are introduced to address that growth and ensure the allocator continues to perform efficiently under fragmented conditions. The RB tree implementation with separate clear/dirty trees provides: - O(n log n) aggregate complexity for all operations instead of O(n^2) - Elimination of soft lockups and system instability - Improved code maintainability and clarity - Better scalability for large memory systems - Predictable performance under fragmentation v3(Matthew): - Remove RB_EMPTY_NODE check in force_merge function. - Rename rb for loop macros to have less generic names and move to .c file. - Make the rb node rb and link field as union. v4(Jani Nikula): - The kernel-doc comment should be "/**" - Move all the rbtree macros to rbtree.h and add parens to ensure correct precedence. v5: - Remove the inline in a .c file (Jani Nikula). v6(Peter Zijlstra): - Add rb_add() function replacing the existing rbtree_insert() code. v7: - A full walk iteration in rbtree is slower than the list (Peter Zijlstra). - The existing rbtree_postorder_for_each_entry_safe macro should be used in scenarios where traversal order is not a critical factor (Christian). Cc: stable(a)vger.kernel.org Fixes: a68c7eaa7a8f ("drm/amdgpu: Enable clear page functionality") Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam(a)amd.com> --- drivers/gpu/drm/drm_buddy.c | 188 ++++++++++++++++++++++-------------- include/drm/drm_buddy.h | 11 ++- 2 files changed, 124 insertions(+), 75 deletions(-) diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c index a94061f373de..67aa67229cc3 100644 --- a/drivers/gpu/drm/drm_buddy.c +++ b/drivers/gpu/drm/drm_buddy.c @@ -14,6 +14,8 @@ static struct kmem_cache *slab_blocks; +#define rbtree_get_free_block(node) rb_entry((node), struct drm_buddy_block, rb) + static struct drm_buddy_block *drm_block_alloc(struct drm_buddy *mm, struct drm_buddy_block *parent, unsigned int order, @@ -31,6 +33,8 @@ static struct drm_buddy_block *drm_block_alloc(struct drm_buddy *mm, block->header |= order; block->parent = parent; + RB_CLEAR_NODE(&block->rb); + BUG_ON(block->header & DRM_BUDDY_HEADER_UNUSED); return block; } @@ -41,23 +45,49 @@ static void drm_block_free(struct drm_buddy *mm, kmem_cache_free(slab_blocks, block); } -static void list_insert_sorted(struct drm_buddy *mm, - struct drm_buddy_block *block) +static bool drm_buddy_block_offset_less(const struct drm_buddy_block *block, + const struct drm_buddy_block *node) { - struct drm_buddy_block *node; - struct list_head *head; + return drm_buddy_block_offset(block) < drm_buddy_block_offset(node); +} - head = &mm->free_list[drm_buddy_block_order(block)]; - if (list_empty(head)) { - list_add(&block->link, head); - return; - } +static bool rbtree_block_offset_less(struct rb_node *block, + const struct rb_node *node) +{ + return drm_buddy_block_offset_less(rbtree_get_free_block(block), + rbtree_get_free_block(node)); +} - list_for_each_entry(node, head, link) - if (drm_buddy_block_offset(block) < drm_buddy_block_offset(node)) - break; +static void rbtree_insert(struct drm_buddy *mm, + struct drm_buddy_block *block) +{ + rb_add(&block->rb, + &mm->free_tree[drm_buddy_block_order(block)], + rbtree_block_offset_less); +} + +static void rbtree_remove(struct drm_buddy *mm, + struct drm_buddy_block *block) +{ + struct rb_root *root; + + root = &mm->free_tree[drm_buddy_block_order(block)]; + rb_erase(&block->rb, root); - __list_add(&block->link, node->link.prev, &node->link); + RB_CLEAR_NODE(&block->rb); +} + +static struct drm_buddy_block * +rbtree_last_entry(struct drm_buddy *mm, unsigned int order) +{ + struct rb_node *node = rb_last(&mm->free_tree[order]); + + return node ? rb_entry(node, struct drm_buddy_block, rb) : NULL; +} + +static bool rbtree_is_empty(struct drm_buddy *mm, unsigned int order) +{ + return RB_EMPTY_ROOT(&mm->free_tree[order]); } static void clear_reset(struct drm_buddy_block *block) @@ -70,12 +100,13 @@ static void mark_cleared(struct drm_buddy_block *block) block->header |= DRM_BUDDY_HEADER_CLEAR; } -static void mark_allocated(struct drm_buddy_block *block) +static void mark_allocated(struct drm_buddy *mm, + struct drm_buddy_block *block) { block->header &= ~DRM_BUDDY_HEADER_STATE; block->header |= DRM_BUDDY_ALLOCATED; - list_del(&block->link); + rbtree_remove(mm, block); } static void mark_free(struct drm_buddy *mm, @@ -84,15 +115,16 @@ static void mark_free(struct drm_buddy *mm, block->header &= ~DRM_BUDDY_HEADER_STATE; block->header |= DRM_BUDDY_FREE; - list_insert_sorted(mm, block); + rbtree_insert(mm, block); } -static void mark_split(struct drm_buddy_block *block) +static void mark_split(struct drm_buddy *mm, + struct drm_buddy_block *block) { block->header &= ~DRM_BUDDY_HEADER_STATE; block->header |= DRM_BUDDY_SPLIT; - list_del(&block->link); + rbtree_remove(mm, block); } static inline bool overlaps(u64 s1, u64 e1, u64 s2, u64 e2) @@ -148,7 +180,7 @@ static unsigned int __drm_buddy_free(struct drm_buddy *mm, mark_cleared(parent); } - list_del(&buddy->link); + rbtree_remove(mm, buddy); if (force_merge && drm_buddy_block_is_clear(buddy)) mm->clear_avail -= drm_buddy_block_size(mm, buddy); @@ -179,13 +211,19 @@ static int __force_merge(struct drm_buddy *mm, return -EINVAL; for (i = min_order - 1; i >= 0; i--) { - struct drm_buddy_block *block, *prev; + struct rb_root *root = &mm->free_tree[i]; + struct rb_node *iter; + + iter = rb_last(root); - list_for_each_entry_safe_reverse(block, prev, &mm->free_list[i], link) { - struct drm_buddy_block *buddy; + while (iter) { + struct drm_buddy_block *block, *buddy; u64 block_start, block_end; - if (!block->parent) + block = rbtree_get_free_block(iter); + iter = rb_prev(iter); + + if (!block || !block->parent) continue; block_start = drm_buddy_block_offset(block); @@ -201,15 +239,10 @@ static int __force_merge(struct drm_buddy *mm, WARN_ON(drm_buddy_block_is_clear(block) == drm_buddy_block_is_clear(buddy)); - /* - * If the prev block is same as buddy, don't access the - * block in the next iteration as we would free the - * buddy block as part of the free function. - */ - if (prev == buddy) - prev = list_prev_entry(prev, link); + if (iter == &buddy->rb) + iter = rb_prev(iter); - list_del(&block->link); + rbtree_remove(mm, block); if (drm_buddy_block_is_clear(block)) mm->clear_avail -= drm_buddy_block_size(mm, block); @@ -258,14 +291,14 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) BUG_ON(mm->max_order > DRM_BUDDY_MAX_ORDER); - mm->free_list = kmalloc_array(mm->max_order + 1, - sizeof(struct list_head), + mm->free_tree = kmalloc_array(mm->max_order + 1, + sizeof(struct rb_root), GFP_KERNEL); - if (!mm->free_list) + if (!mm->free_tree) return -ENOMEM; for (i = 0; i <= mm->max_order; ++i) - INIT_LIST_HEAD(&mm->free_list[i]); + mm->free_tree[i] = RB_ROOT; mm->n_roots = hweight64(size); @@ -273,7 +306,7 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) sizeof(struct drm_buddy_block *), GFP_KERNEL); if (!mm->roots) - goto out_free_list; + goto out_free_tree; offset = 0; i = 0; @@ -312,8 +345,8 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) while (i--) drm_block_free(mm, mm->roots[i]); kfree(mm->roots); -out_free_list: - kfree(mm->free_list); +out_free_tree: + kfree(mm->free_tree); return -ENOMEM; } EXPORT_SYMBOL(drm_buddy_init); @@ -323,7 +356,7 @@ EXPORT_SYMBOL(drm_buddy_init); * * @mm: DRM buddy manager to free * - * Cleanup memory manager resources and the freelist + * Cleanup memory manager resources and the freetree */ void drm_buddy_fini(struct drm_buddy *mm) { @@ -350,7 +383,7 @@ void drm_buddy_fini(struct drm_buddy *mm) WARN_ON(mm->avail != mm->size); kfree(mm->roots); - kfree(mm->free_list); + kfree(mm->free_tree); } EXPORT_SYMBOL(drm_buddy_fini); @@ -383,7 +416,7 @@ static int split_block(struct drm_buddy *mm, clear_reset(block); } - mark_split(block); + mark_split(mm, block); return 0; } @@ -412,7 +445,7 @@ EXPORT_SYMBOL(drm_get_buddy); * @is_clear: blocks clear state * * Reset the clear state based on @is_clear value for each block - * in the freelist. + * in the freetree. */ void drm_buddy_reset_clear(struct drm_buddy *mm, bool is_clear) { @@ -431,9 +464,9 @@ void drm_buddy_reset_clear(struct drm_buddy *mm, bool is_clear) } for (i = 0; i <= mm->max_order; ++i) { - struct drm_buddy_block *block; + struct drm_buddy_block *block, *tmp; - list_for_each_entry_reverse(block, &mm->free_list[i], link) { + rbtree_postorder_for_each_entry_safe(block, tmp, &mm->free_tree[i], rb) { if (is_clear != drm_buddy_block_is_clear(block)) { if (is_clear) { mark_cleared(block); @@ -639,14 +672,18 @@ get_maxblock(struct drm_buddy *mm, unsigned int order, unsigned int i; for (i = order; i <= mm->max_order; ++i) { + struct rb_node *iter = rb_last(&mm->free_tree[i]); struct drm_buddy_block *tmp_block; - list_for_each_entry_reverse(tmp_block, &mm->free_list[i], link) { - if (block_incompatible(tmp_block, flags)) - continue; + while (iter) { + tmp_block = rbtree_get_free_block(iter); - block = tmp_block; - break; + if (!block_incompatible(tmp_block, flags)) { + block = tmp_block; + break; + } + + iter = rb_prev(iter); } if (!block) @@ -667,7 +704,7 @@ get_maxblock(struct drm_buddy *mm, unsigned int order, } static struct drm_buddy_block * -alloc_from_freelist(struct drm_buddy *mm, +alloc_from_freetree(struct drm_buddy *mm, unsigned int order, unsigned long flags) { @@ -682,14 +719,18 @@ alloc_from_freelist(struct drm_buddy *mm, tmp = drm_buddy_block_order(block); } else { for (tmp = order; tmp <= mm->max_order; ++tmp) { + struct rb_node *iter = rb_last(&mm->free_tree[tmp]); struct drm_buddy_block *tmp_block; - list_for_each_entry_reverse(tmp_block, &mm->free_list[tmp], link) { - if (block_incompatible(tmp_block, flags)) - continue; + while (iter) { + tmp_block = rbtree_get_free_block(iter); - block = tmp_block; - break; + if (!block_incompatible(tmp_block, flags)) { + block = tmp_block; + break; + } + + iter = rb_prev(iter); } if (block) @@ -700,10 +741,8 @@ alloc_from_freelist(struct drm_buddy *mm, if (!block) { /* Fallback method */ for (tmp = order; tmp <= mm->max_order; ++tmp) { - if (!list_empty(&mm->free_list[tmp])) { - block = list_last_entry(&mm->free_list[tmp], - struct drm_buddy_block, - link); + if (!rbtree_is_empty(mm, tmp)) { + block = rbtree_last_entry(mm, tmp); if (block) break; } @@ -771,7 +810,7 @@ static int __alloc_range(struct drm_buddy *mm, if (contains(start, end, block_start, block_end)) { if (drm_buddy_block_is_free(block)) { - mark_allocated(block); + mark_allocated(mm, block); total_allocated += drm_buddy_block_size(mm, block); mm->avail -= drm_buddy_block_size(mm, block); if (drm_buddy_block_is_clear(block)) @@ -849,8 +888,8 @@ static int __alloc_contig_try_harder(struct drm_buddy *mm, { u64 rhs_offset, lhs_offset, lhs_size, filled; struct drm_buddy_block *block; - struct list_head *list; LIST_HEAD(blocks_lhs); + struct rb_node *iter; unsigned long pages; unsigned int order; u64 modify_size; @@ -862,11 +901,14 @@ static int __alloc_contig_try_harder(struct drm_buddy *mm, if (order == 0) return -ENOSPC; - list = &mm->free_list[order]; - if (list_empty(list)) + if (rbtree_is_empty(mm, order)) return -ENOSPC; - list_for_each_entry_reverse(block, list, link) { + iter = rb_last(&mm->free_tree[order]); + + while (iter) { + block = rbtree_get_free_block(iter); + /* Allocate blocks traversing RHS */ rhs_offset = drm_buddy_block_offset(block); err = __drm_buddy_alloc_range(mm, rhs_offset, size, @@ -891,6 +933,8 @@ static int __alloc_contig_try_harder(struct drm_buddy *mm, } /* Free blocks for the next iteration */ drm_buddy_free_list_internal(mm, blocks); + + iter = rb_prev(iter); } return -ENOSPC; @@ -976,7 +1020,7 @@ int drm_buddy_block_trim(struct drm_buddy *mm, list_add(&block->tmp_link, &dfs); err = __alloc_range(mm, &dfs, new_start, new_size, blocks, NULL); if (err) { - mark_allocated(block); + mark_allocated(mm, block); mm->avail -= drm_buddy_block_size(mm, block); if (drm_buddy_block_is_clear(block)) mm->clear_avail -= drm_buddy_block_size(mm, block); @@ -999,8 +1043,8 @@ __drm_buddy_alloc_blocks(struct drm_buddy *mm, return __drm_buddy_alloc_range_bias(mm, start, end, order, flags); else - /* Allocate from freelist */ - return alloc_from_freelist(mm, order, flags); + /* Allocate from freetree */ + return alloc_from_freetree(mm, order, flags); } /** @@ -1017,8 +1061,8 @@ __drm_buddy_alloc_blocks(struct drm_buddy *mm, * alloc_range_bias() called on range limitations, which traverses * the tree and returns the desired block. * - * alloc_from_freelist() called when *no* range restrictions - * are enforced, which picks the block from the freelist. + * alloc_from_freetree() called when *no* range restrictions + * are enforced, which picks the block from the freetree. * * Returns: * 0 on success, error code on failure. @@ -1120,7 +1164,7 @@ int drm_buddy_alloc_blocks(struct drm_buddy *mm, } } while (1); - mark_allocated(block); + mark_allocated(mm, block); mm->avail -= drm_buddy_block_size(mm, block); if (drm_buddy_block_is_clear(block)) mm->clear_avail -= drm_buddy_block_size(mm, block); @@ -1201,10 +1245,10 @@ void drm_buddy_print(struct drm_buddy *mm, struct drm_printer *p) mm->chunk_size >> 10, mm->size >> 20, mm->avail >> 20, mm->clear_avail >> 20); for (order = mm->max_order; order >= 0; order--) { - struct drm_buddy_block *block; + struct drm_buddy_block *block, *tmp; u64 count = 0, free; - list_for_each_entry(block, &mm->free_list[order], link) { + rbtree_postorder_for_each_entry_safe(block, tmp, &mm->free_tree[order], rb) { BUG_ON(!drm_buddy_block_is_free(block)); count++; } diff --git a/include/drm/drm_buddy.h b/include/drm/drm_buddy.h index 513837632b7d..9ee105d4309f 100644 --- a/include/drm/drm_buddy.h +++ b/include/drm/drm_buddy.h @@ -10,6 +10,7 @@ #include <linux/list.h> #include <linux/slab.h> #include <linux/sched.h> +#include <linux/rbtree.h> #include <drm/drm_print.h> @@ -53,7 +54,11 @@ struct drm_buddy_block { * a list, if so desired. As soon as the block is freed with * drm_buddy_free* ownership is given back to the mm. */ - struct list_head link; + union { + struct rb_node rb; + struct list_head link; + }; + struct list_head tmp_link; }; @@ -68,7 +73,7 @@ struct drm_buddy_block { */ struct drm_buddy { /* Maintain a free list for each order. */ - struct list_head *free_list; + struct rb_root *free_tree; /* * Maintain explicit binary tree(s) to track the allocation of the @@ -94,7 +99,7 @@ struct drm_buddy { }; static inline u64 -drm_buddy_block_offset(struct drm_buddy_block *block) +drm_buddy_block_offset(const struct drm_buddy_block *block) { return block->header & DRM_BUDDY_HEADER_OFFSET; } base-commit: 3a9cf301794c1a49d95eeb13119ff490fb5cfe88 -- 2.34.1

3 weeks, 5 days

3
5
0 0

[PATCH v1] rust: cfi: only 64-bit arm and x86 support CFI_CLANG

by Conor Dooley

From: Conor Dooley <conor.dooley(a)microchip.com> The kernel uses the standard rustc targets for non-x86 targets, and out of those only 64-bit arm's target has kcfi support enabled. For x86, the custom 64-bit target enables kcfi. The HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC config option that allows CFI_CLANG to be used in combination with RUST does not check whether the rustc target supports kcfi. This breaks the build on riscv (and presumably 32-bit arm) when CFI_CLANG and RUST are enabled at the same time. Ordinarily, a rustc-option check would be used to detect target support but unfortunately rustc-option filters out the target for reasons given in commit 46e24a545cdb4 ("rust: kasan/kbuild: fix missing flags on first build"). As a result, if the host supports kcfi but the target does not, e.g. when building for riscv on x86_64, the build would remain broken. Instead, make HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC depend on the only two architectures where the target used supports it to fix the build. CC: stable(a)vger.kernel.org Fixes: ca627e636551e ("rust: cfi: add support for CFI_CLANG with Rust") Signed-off-by: Conor Dooley <conor.dooley(a)microchip.com> --- CC: Paul Walmsley <paul.walmsley(a)sifive.com> CC: Palmer Dabbelt <palmer(a)dabbelt.com> CC: Alexandre Ghiti <alex(a)ghiti.fr> CC: Miguel Ojeda <ojeda(a)kernel.org> CC: Alex Gaynor <alex.gaynor(a)gmail.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Gary Guo <gary(a)garyguo.net> CC: "Björn Roy Baron" <bjorn3_gh(a)protonmail.com> CC: Benno Lossin <lossin(a)kernel.org> CC: Andreas Hindborg <a.hindborg(a)kernel.org> CC: Alice Ryhl <aliceryhl(a)google.com> CC: Trevor Gross <tmgross(a)umich.edu> CC: Danilo Krummrich <dakr(a)kernel.org> CC: Kees Cook <kees(a)kernel.org> CC: Sami Tolvanen <samitolvanen(a)google.com> CC: Matthew Maurer <mmaurer(a)google.com> CC: "Peter Zijlstra (Intel)" <peterz(a)infradead.org> CC: linux-kernel(a)vger.kernel.org CC: linux-riscv(a)lists.infradead.org CC: rust-for-linux(a)vger.kernel.org --- arch/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/Kconfig b/arch/Kconfig index d1b4ffd6e0856..880cddff5eda7 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -917,6 +917,7 @@ config HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC def_bool y depends on HAVE_CFI_ICALL_NORMALIZE_INTEGERS_CLANG depends on RUSTC_VERSION >= 107900 + depends on ARM64 || X86_64 # With GCOV/KASAN we need this fix: https://github.com/rust-lang/rust/pull/129373 depends on (RUSTC_LLVM_VERSION >= 190103 && RUSTC_VERSION >= 108200) || \ (!GCOV_KERNEL && !KASAN_GENERIC && !KASAN_SW_TAGS) -- 2.47.2

3 weeks, 5 days

5
6
0 0

S/PDIF not detected anymore / regression on recent kernel 6.7 ?

by Serge SIMON

Dear Kernel maintainers, I think i'm encountering (for the first time in years !) a regression with the "6.7.arch3-1" kernel (whereas no issues with "6.6.10.arch1-1", on which i reverted). I'm running a (up-to-date, and non-LTS) ARCHLINUX desktop, on a ASUS B560-I motherboard, with 3 monitors (attached to a 4-HDMI outputs card), plus an audio S/PDIF optic output at motherboard level. With the latest kernel, the S/PIDF optic output of the motherboard is NOT detected anymore (and i haven't been able to see / find anything in the logs at quick glance, neither journalctl -xe nor dmesg). Once reverted to 6.6.10, everything is fine again. For example, in a working situation (6.6.10), i have : cat /proc/asound/pcm 00-00: ALC1220 Analog : ALC1220 Analog : playback 1 : capture 1 00-01: ALC1220 Digital : ALC1220 Digital : playback 1 00-02: ALC1220 Alt Analog : ALC1220 Alt Analog : capture 1 01-03: HDMI 0 : HDMI 0 : playback 1 01-07: HDMI 1 : HDMI 1 : playback 1 01-08: HDMI 2 : HDMI 2 : playback 1 01-09: HDMI 3 : HDMI 3 : playback 1 Whereas while on the latest 6.7 kernel, i only had the 4 HDMI lines (linked to a NVIDIA T600 card, with 4 HDMI outputs) and not the three first ones (attached to the motherboard). (of course i did several tests with 6.7, reboot, ... without any changes) Any idea ? Best regards -- Serge.

3 weeks, 5 days

4
7
0 0

[PATCH v2] media: mtk-mdp: Fix some issues in mtk_mdp_core.c

by Haoxiang Li

Add check for the return value of vpu_get_plat_device() to prevent null pointer dereference. And vpu_get_plat_device() increases the reference count of the returned platform device. Add platform_device_put() to prevent reference leak. Also add platform_device_put() in mtk_mdp_remove(). Add mtk_mdp_unregister_m2m_device() on the error handling path. Fixes: c8eb2d7e8202 ("[media] media: Add Mediatek MDP Driver") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <haoxiang_li2024(a)163.com> --- Changes in v2: - Add check for vpu_get_plat_device() - Add platform_device_put() in mtk_mdp_remove() - Add mtk_mdp_unregister_m2m_device() on the error handling path. - Modify the patch title and description. I think you are right. Thanks, CJ! --- .../media/platform/mediatek/mdp/mtk_mdp_core.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c index 80fdc6ff57e0..8432833814f3 100644 --- a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c +++ b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c @@ -194,11 +194,17 @@ static int mtk_mdp_probe(struct platform_device *pdev) } mdp->vpu_dev = vpu_get_plat_device(pdev); + if (!mdp->vpu_dev) { + dev_err(&pdev->dev, "Failed to get vpu device\n"); + ret = -ENODEV; + goto err_vpu_get_dev; + } + ret = vpu_wdt_reg_handler(mdp->vpu_dev, mtk_mdp_reset_handler, mdp, VPU_RST_MDP); if (ret) { dev_err(&pdev->dev, "Failed to register reset handler\n"); - goto err_m2m_register; + goto err_reg_handler; } platform_set_drvdata(pdev, mdp); @@ -206,7 +212,7 @@ static int mtk_mdp_probe(struct platform_device *pdev) ret = vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); if (ret) { dev_err(&pdev->dev, "Failed to set vb2 dma mag seg size\n"); - goto err_m2m_register; + goto err_reg_handler; } pm_runtime_enable(dev); @@ -214,6 +220,12 @@ static int mtk_mdp_probe(struct platform_device *pdev) return 0; +err_reg_handler: + platform_device_put(mdp->vpu_dev); + +err_vpu_get_dev: + mtk_mdp_unregister_m2m_device(mdp); + err_m2m_register: v4l2_device_unregister(&mdp->v4l2_dev); @@ -242,6 +254,7 @@ static void mtk_mdp_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); vb2_dma_contig_clear_max_seg_size(&pdev->dev); + platform_device_put(mdp->vpu_dev); mtk_mdp_unregister_m2m_device(mdp); v4l2_device_unregister(&mdp->v4l2_dev); -- 2.25.1

3 weeks, 5 days

2
1
0 0

[PATCH 6.1 00/73] 6.1.155-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.1.155 release. There are 73 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.155-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.1.155-rc1 Linus Torvalds <torvalds(a)linux-foundation.org> minmax: simplify and clarify min_t()/max_t() implementation Linus Torvalds <torvalds(a)linux-foundation.org> minmax: add a few more MIN_T/MAX_T users Linus Torvalds <torvalds(a)linux-foundation.org> minmax: make generic MIN() and MAX() macros available everywhere Eric Biggers <ebiggers(a)kernel.org> kmsan: fix out-of-bounds access to shadow memory Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add validation for ring_len param Justin Bronder <jsbronder(a)cold-front.org> i40e: increase max descriptors for XL710 Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in config queues msg Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix validation of VF state in get resources Nirmoy Das <nirmoyd(a)nvidia.com> drm/ast: Use msleep instead of mdelay for edid read Linus Torvalds <torvalds(a)linux-foundation.org> minmax: avoid overly complicated constant expressions in VM code David Laight <David.Laight(a)ACULAB.COM> minmax: fix indentation of __cmp_once() and __clamp_once() Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> minmax: deduplicate __unconst_integer_typeof() Herve Codina <herve.codina(a)bootlin.com> minmax: Introduce {min,max}_array() Matthew Wilcox (Oracle) <willy(a)infradead.org> minmax: add in_range() macro David Hildenbrand <david(a)redhat.com> mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() Kefeng Wang <wangkefeng.wang(a)huawei.com> mm: migrate_device: use more folio in migrate_device_finalize() Nathan Chancellor <nathan(a)kernel.org> s390/cpum_cf: Fix uninitialized warning after backport of ce971233242b Thomas Zimmermann <tzimmermann(a)suse.de> fbcon: Fix OOB access in font allocation Samasth Norway Ananda <samasth.norway.ananda(a)oracle.com> fbcon: fix integer overflow in fbcon_do_set_font Jinjiang Tu <tujinjiang(a)huawei.com> mm/hugetlb: fix folio is still mapped when deleted Zhen Ni <zhen.ni(a)easystack.cn> afs: Fix potential null pointer dereference in afs_put_server Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing: dynevent: Add a missing lockdown check on dynevent Eric Biggers <ebiggers(a)kernel.org> crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: improve VF MAC filters accounting Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add mask to apply valid bits for itr_idx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add max boundary check for VF filters Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix input validation logic for action_meta Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in i40e_validate_queue_map Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> futex: Prevent use-after-free during requeue-PI Zabelin Nikita <n.zabelin(a)mt-integration.ru> drm/gma500: Fix null dereference in hdmi teardown Dan Carpenter <dan.carpenter(a)linaro.org> octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() Martin Schiller <ms(a)dev.tdt.de> net: dsa: lantiq_gswip: do also enable or disable cpu port Ido Schimmel <idosch(a)nvidia.com> selftests: fib_nexthops: Fix creation of non-FDB nexthops Ido Schimmel <idosch(a)nvidia.com> nexthop: Forbid FDB status change while nexthop is in a group Alok Tiwari <alok.a.tiwari(a)oracle.com> bnxt_en: correct offset handling for IPv6 destination address Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_sync: Fix hci_resume_advertising_sync Petr Malat <oss(a)malat.biz> ethernet: rvu-af: Remove slash from the driver name Stéphane Grosjean <stephane.grosjean(a)hms-networks.com> can: peak_usb: fix shift-out-of-bounds issue Vincent Mailhol <mailhol(a)kernel.org> can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: hi311x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> can: etas_es58x: sort the includes by alphabetic order Leon Hwang <leon.hwang(a)linux.dev> bpf: Reject bpf_timer for PREEMPT_RT Geert Uytterhoeven <geert+renesas(a)glider.be> can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Stefan Metzmacher <metze(a)samba.org> smb: server: don't use delayed_work for post_recv_credits_work Christian Loehle <christian.loehle(a)arm.com> cpufreq: Initialize cpufreq-based invariance before subsys Peng Fan <peng.fan(a)nxp.com> arm64: dts: imx8mp: Correct thermal sensor index Hugh Dickins <hughd(a)google.com> mm: folio_may_be_lru_cached() unless folio_test_large() Hugh Dickins <hughd(a)google.com> mm/gup: local lru_add_drain() to avoid lru_add_drain_all() Hugh Dickins <hughd(a)google.com> mm/gup: check ref_count instead of lru before migration Shivank Garg <shivankg(a)amd.com> mm: add folio_expected_ref_count() for reference count calculation David Hildenbrand <david(a)redhat.com> mm/gup: revert "mm: gup: fix infinite loop within __get_longterm_locked" Or Har-Toov <ohartoov(a)nvidia.com> IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions qaqland <anguoli(a)uniontech.com> ALSA: usb-audio: Add mute TLV for playback volumes on more devices Cryolitia PukNgae <cryolitia(a)uniontech.com> ALSA: usb-audio: move mixer_quirks' min_mute into common quirk noble.yang <noble.yang(a)comtrue-inc.com> ALSA: usb-audio: Add DSD support for Comtrue USB Audio device Jiayi Li <lijiayi(a)kylinos.cn> usb: core: Add 0x prefix to quirks debug output Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix build with CONFIG_INPUT=n Chen Ni <nichen(a)iscas.ac.cn> ALSA: usb-audio: Convert comma to semicolon Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: specify that Apple Touch Bar is direct Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: take cls->maxcontacts into account for Apple Touch Bar even without a HID_DG_CONTACTMAX field Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: support getting the tip state from HID_DG_TOUCH fields in Apple Touch Bar Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Simplify NULL comparison in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Avoid multiple assignments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix block comments in mixer_quirks ------------- Diffstat: Makefile | 4 +- arch/arm/mm/pageattr.c | 6 +- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 +- arch/s390/kernel/perf_cpum_cf.c | 4 +- arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/cpufreq/cpufreq.c | 20 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + .../gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- .../drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 + .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c | 3 + .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c | 3 + drivers/gpu/drm/arm/display/include/malidp_utils.h | 2 +- .../drm/arm/display/komeda/komeda_pipeline_state.c | 24 +- drivers/gpu/drm/ast/ast_dp.c | 2 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 - drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hid/hid-multitouch.c | 45 +++- drivers/hwmon/adt7475.c | 24 +- drivers/infiniband/hw/mlx5/devx.c | 1 + drivers/md/dm-integrity.c | 2 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + drivers/net/can/rcar/rcar_can.c | 8 +- drivers/net/can/spi/hi311x.c | 1 + drivers/net/can/sun4i_can.c | 1 + drivers/net/can/usb/etas_es58x/es581_4.c | 4 +- drivers/net/can/usb/etas_es58x/es58x_core.c | 7 +- drivers/net/can/usb/etas_es58x/es58x_core.h | 8 +- drivers/net/can/usb/etas_es58x/es58x_fd.c | 4 +- drivers/net/can/usb/mcba_usb.c | 1 + drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- drivers/net/dsa/lantiq_gswip.c | 41 +-- drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +- drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 +- drivers/net/ethernet/intel/i40e/i40e.h | 4 +- drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 26 +- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 ++++---- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 +- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 +- .../net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 +- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/usb/core/quirks.c | 2 +- drivers/video/fbdev/core/fbcon.c | 13 +- drivers/virt/acrn/ioreq.c | 4 +- fs/afs/server.c | 3 +- fs/btrfs/misc.h | 2 - fs/ext2/balloc.c | 2 - fs/ext4/ext4.h | 2 - fs/hugetlbfs/inode.c | 10 +- fs/smb/server/transport_rdma.c | 18 +- fs/ufs/util.h | 6 - include/crypto/if_alg.h | 2 +- include/linux/minmax.h | 122 +++++++-- include/linux/mm.h | 54 ++++ include/linux/pageblock-flags.h | 2 +- include/linux/swap.h | 10 + include/net/bluetooth/hci_core.h | 21 ++ kernel/bpf/verifier.c | 4 + kernel/futex/requeue.c | 6 +- kernel/trace/preemptirq_delay_test.c | 2 - kernel/trace/trace_dynevent.c | 4 + lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/logic_pio.c | 3 - mm/gup.c | 28 +- mm/kmsan/core.c | 10 +- mm/kmsan/kmsan_test.c | 16 ++ mm/migrate_device.c | 42 ++- mm/mlock.c | 2 +- mm/swap.c | 4 +- mm/zsmalloc.c | 1 - net/bluetooth/hci_event.c | 26 +- net/bluetooth/hci_sync.c | 7 + net/ipv4/nexthop.c | 7 + net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- net/netfilter/nf_nat_core.c | 6 +- net/tipc/core.h | 2 +- net/tipc/link.c | 10 +- sound/usb/mixer_quirks.c | 295 +++++++++++++++++++-- sound/usb/quirks.c | 24 +- sound/usb/usbaudio.h | 4 + .../selftests/bpf/progs/get_branch_snapshot.c | 4 +- tools/testing/selftests/net/fib_nexthops.sh | 12 +- tools/testing/selftests/seccomp/seccomp_bpf.c | 2 + tools/testing/selftests/vm/mremap_test.c | 2 + 97 files changed, 950 insertions(+), 331 deletions(-)

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[PATCH 6.12 00/89] 6.12.50-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.12.50 release. There are 89 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.12.50-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.12.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.12.50-rc1 Niklas Neronin <niklas.neronin(a)linux.intel.com> Revert "usb: xhci: remove option to change a default ring's TRB cycle bit" Jason Gunthorpe <jgg(a)ziepe.ca> iommufd: Fix race during abort for file descriptors Thomas Zimmermann <tzimmermann(a)suse.de> fbcon: Fix OOB access in font allocation Samasth Norway Ananda <samasth.norway.ananda(a)oracle.com> fbcon: fix integer overflow in fbcon_do_set_font Jinjiang Tu <tujinjiang(a)huawei.com> mm/hugetlb: fix folio is still mapped when deleted Eric Biggers <ebiggers(a)kernel.org> kmsan: fix out-of-bounds access to shadow memory Hans de Goede <hansg(a)kernel.org> gpiolib: Extend software-node support to support secondary software-nodes Jakub Acs <acsjakub(a)amazon.de> fs/proc/task_mmu: check p->vec_buf for NULL Zhen Ni <zhen.ni(a)easystack.cn> afs: Fix potential null pointer dereference in afs_put_server Nirmoy Das <nirmoyd(a)nvidia.com> drm/ast: Use msleep instead of mdelay for edid read Josua Mayer <josua(a)solid-run.com> arm64: dts: marvell: cn9132-clearfog: fix multi-lane pci x2 and x4 ports Josua Mayer <josua(a)solid-run.com> arm64: dts: marvell: cn9132-clearfog: disable eMMC high-speed modes Nobuhiro Iwamatsu <iwamatsu(a)nigauri.org> ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing: dynevent: Add a missing lockdown check on dynevent Eric Biggers <ebiggers(a)kernel.org> crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: improve VF MAC filters accounting Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add mask to apply valid bits for itr_idx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add max boundary check for VF filters Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix validation of VF state in get resources Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix input validation logic for action_meta Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in config queues msg Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in i40e_validate_queue_map Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add validation for ring_len param Amit Chaudhari <amitchaudhari(a)mac.com> HID: asus: add support for missing PX series fn keys Sang-Heon Jeon <ekffu200098(a)gmail.com> smb: client: fix wrong index reference in smb2_compound_op() Daniel Lee <dany97(a)live.ca> platform/x86: lg-laptop: Fix WMAB call in fan_mode_store() Adrián Larumbe <adrian.larumbe(a)collabora.com> drm/panthor: Defer scheduler entitiy destruction to queue release Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> futex: Prevent use-after-free during requeue-PI Zabelin Nikita <n.zabelin(a)mt-integration.ru> drm/gma500: Fix null dereference in hdmi teardown Hugh Dickins <hughd(a)google.com> mm: folio_may_be_lru_cached() unless folio_test_large() Hugh Dickins <hughd(a)google.com> mm: revert "mm/gup: clear the LRU flag of a page before adding to LRU batch" Hugh Dickins <hughd(a)google.com> mm/gup: local lru_add_drain() to avoid lru_add_drain_all() Dan Carpenter <dan.carpenter(a)linaro.org> octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() Ido Schimmel <idosch(a)nvidia.com> selftests: fib_nexthops: Fix creation of non-FDB nexthops Ido Schimmel <idosch(a)nvidia.com> nexthop: Forbid FDB status change while nexthop is in a group Jason Baron <jbaron(a)akamai.com> net: allow alloc_skb_with_frags() to use MAX_SKB_FRAGS Alok Tiwari <alok.a.tiwari(a)oracle.com> bnxt_en: correct offset handling for IPv6 destination address Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> vhost: Take a reference on the task in struct vhost_task. Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_sync: Fix hci_resume_advertising_sync Petr Malat <oss(a)malat.biz> ethernet: rvu-af: Remove slash from the driver name Sidraya Jayagond <sidraya(a)linux.ibm.com> net/smc: fix warning in smc_rx_splice() when calling get_page() Wang Liang <wangliang74(a)huawei.com> net: tun: Update napi->skb after XDP process Stéphane Grosjean <stephane.grosjean(a)hms-networks.com> can: peak_usb: fix shift-out-of-bounds issue Vincent Mailhol <mailhol(a)kernel.org> can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: hi311x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow Sabrina Dubroca <sd(a)queasysnail.net> xfrm: xfrm_alloc_spi shouldn't use 0 as SPI Leon Hwang <leon.hwang(a)linux.dev> bpf: Reject bpf_timer for PREEMPT_RT Geert Uytterhoeven <geert+renesas(a)glider.be> can: rcar_can: rcar_can_resume(): fix s2ram with PSCI James Guan <guan_yufei(a)163.com> wifi: virt_wifi: Fix page fault on connect Mark Harmstone <mark(a)harmstone.com> btrfs: don't allow adding block device of less than 1 MB Jiri Olsa <olsajiri(a)gmail.com> bpf: Check the helper function is valid in get_helper_proto Stefan Metzmacher <metze(a)samba.org> smb: server: use disable_work_sync in transport_rdma.c Stefan Metzmacher <metze(a)samba.org> smb: server: don't use delayed_work for post_recv_credits_work Christian Loehle <christian.loehle(a)arm.com> cpufreq: Initialize cpufreq-based invariance before subsys Jihed Chaibi <jihed.chaibi.dev(a)gmail.com> ARM: dts: kirkwood: Fix sound DAI cells for OpenRD clients Peng Fan <peng.fan(a)nxp.com> arm64: dts: imx8mp: Correct thermal sensor index Peng Fan <peng.fan(a)nxp.com> firmware: imx: Add stub functions for SCMI MISC API Basavaraj Natikar <Basavaraj.Natikar(a)amd.com> HID: amd_sfh: Add sync across amd sfh work functions Or Har-Toov <ohartoov(a)nvidia.com> IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Aleksander Jan Bajkowski <olek2(a)wp.pl> net: sfp: add quirk for FLYPRO copper SFP+ module qaqland <anguoli(a)uniontech.com> ALSA: usb-audio: Add mute TLV for playback volumes on more devices Cryolitia PukNgae <cryolitia(a)uniontech.com> ALSA: usb-audio: move mixer_quirks' min_mute into common quirk noble.yang <noble.yang(a)comtrue-inc.com> ALSA: usb-audio: Add DSD support for Comtrue USB Audio device Heikki Krogerus <heikki.krogerus(a)linux.intel.com> i2c: designware: Add quirk for Intel Xe Benoît Monin <benoit.monin(a)bootlin.com> mmc: sdhci-cadence: add Mobileye eyeQ support Chris Morgan <macromorgan(a)hotmail.com> net: sfp: add quirk for Potron SFP+ XGSPON ONU Stick Marc Kleine-Budde <mkl(a)pengutronix.de> net: fec: rename struct fec_devinfo fec_imx6x_info -> fec_imx6sx_info Jiayi Li <lijiayi(a)kylinos.cn> usb: core: Add 0x prefix to quirks debug output Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix build with CONFIG_INPUT=n Stefan Binding <sbinding(a)opensource.cirrus.com> ALSA: hda/realtek: Add support for ASUS NUC using CS35L41 HDA Chen Ni <nichen(a)iscas.ac.cn> ALSA: usb-audio: Convert comma to semicolon Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: specify that Apple Touch Bar is direct Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: take cls->maxcontacts into account for Apple Touch Bar even without a HID_DG_CONTACTMAX field Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: support getting the tip state from HID_DG_TOUCH fields in Apple Touch Bar Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Simplify NULL comparison in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Avoid multiple assignments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix block comments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix code alignment in mixer_quirks Takashi Sakamoto <o-takashi(a)sakamocchi.jp> firewire: core: fix overlooked update of subsystem ABI version Alok Tiwari <alok.a.tiwari(a)oracle.com> scsi: ufs: mcq: Fix memory allocation checks for SQE and CQE ------------- Diffstat: Documentation/admin-guide/laptops/lg-laptop.rst | 4 +- Makefile | 4 +- .../dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 +- .../boot/dts/marvell/kirkwood-openrd-client.dts | 2 +- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 +- arch/arm64/boot/dts/marvell/cn9132-clearfog.dts | 16 +- arch/arm64/boot/dts/marvell/cn9132-sr-cex7.dtsi | 8 + drivers/cpufreq/cpufreq.c | 20 +- drivers/firewire/core-cdev.c | 2 +- drivers/gpio/gpiolib.c | 21 +- drivers/gpu/drm/ast/ast_dp.c | 2 +- drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 +- drivers/gpu/drm/panthor/panthor_sched.c | 8 +- drivers/hid/amd-sfh-hid/amd_sfh_client.c | 12 +- drivers/hid/amd-sfh-hid/amd_sfh_common.h | 3 + drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | 4 + drivers/hid/hid-asus.c | 3 + drivers/hid/hid-multitouch.c | 45 +- drivers/i2c/busses/i2c-designware-platdrv.c | 7 +- drivers/infiniband/hw/mlx5/devx.c | 1 + drivers/iommu/iommufd/fault.c | 4 +- drivers/iommu/iommufd/main.c | 34 +- drivers/mmc/host/sdhci-cadence.c | 11 + drivers/net/can/rcar/rcar_can.c | 8 +- drivers/net/can/spi/hi311x.c | 1 + drivers/net/can/sun4i_can.c | 1 + drivers/net/can/usb/etas_es58x/es58x_core.c | 3 +- drivers/net/can/usb/mcba_usb.c | 1 + drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- drivers/net/dsa/lantiq_gswip.c | 21 +- drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +- drivers/net/ethernet/freescale/fec_main.c | 4 +- drivers/net/ethernet/intel/i40e/i40e.h | 3 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 26 +- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 +++-- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 +- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 +- .../net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 +- drivers/net/phy/sfp.c | 24 +- drivers/net/tun.c | 3 + drivers/net/wireless/virtual/virt_wifi.c | 4 +- drivers/platform/x86/lg-laptop.c | 34 +- drivers/ufs/core/ufs-mcq.c | 4 +- drivers/usb/core/quirks.c | 2 +- drivers/usb/host/xhci-dbgcap.c | 2 +- drivers/usb/host/xhci-mem.c | 50 +- drivers/usb/host/xhci.c | 2 +- drivers/usb/host/xhci.h | 6 +- drivers/video/fbdev/core/fbcon.c | 13 +- fs/afs/server.c | 3 +- fs/btrfs/volumes.c | 5 + fs/hugetlbfs/inode.c | 10 +- fs/proc/task_mmu.c | 3 + fs/smb/client/smb2inode.c | 2 +- fs/smb/server/transport_rdma.c | 22 +- include/crypto/if_alg.h | 2 +- include/linux/firmware/imx/sm.h | 12 + include/linux/swap.h | 10 + include/net/bluetooth/hci_core.h | 21 + kernel/bpf/core.c | 5 +- kernel/bpf/verifier.c | 6 +- kernel/futex/requeue.c | 6 +- kernel/trace/trace_dynevent.c | 4 + kernel/vhost_task.c | 3 +- mm/gup.c | 15 +- mm/kmsan/core.c | 10 +- mm/kmsan/kmsan_test.c | 16 + mm/mlock.c | 6 +- mm/swap.c | 51 +- net/bluetooth/hci_event.c | 26 +- net/bluetooth/hci_sync.c | 7 + net/core/skbuff.c | 2 +- net/ipv4/nexthop.c | 7 + net/smc/smc_loopback.c | 14 +- net/xfrm/xfrm_state.c | 3 + sound/pci/hda/patch_realtek.c | 11 + sound/usb/mixer_quirks.c | 545 +++++++++++++++------ sound/usb/quirks.c | 24 +- sound/usb/usbaudio.h | 4 + tools/testing/selftests/net/fib_nexthops.sh | 12 +- 80 files changed, 1037 insertions(+), 387 deletions(-)

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Linux-stable-mirror September 2025