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[PATCH OLK-5.10] iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid
by Jiacheng Yu 28 Nov '25

28 Nov '25

From: Pavel Paklov <Pavel.Paklov(a)cyberprotect.ru> stable inclusion from stable-v5.15.182 commit 466d9da267079a8d3b69fa72dfa3a732e1f6dbb5 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IC991Z CVE: CVE-2025-37927 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 8dee308e4c01dea48fc104d37f92d5b58c50b96c upstream. There is a string parsing logic error which can lead to an overflow of hid or uid buffers. Comparing ACPIID_LEN against a total string length doesn't take into account the lengths of individual hid and uid buffers so the check is insufficient in some cases. For example if the length of hid string is 4 and the length of the uid string is 260, the length of str will be equal to ACPIID_LEN + 1 but uid string will overflow uid buffer which size is 256. The same applies to the hid string with length 13 and uid string with length 250. Check the length of hid and uid strings separately to prevent buffer overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: ca3bf5d47cec ("iommu/amd: Introduces ivrs_acpihid kernel parameter") Cc: stable(a)vger.kernel.org Signed-off-by: Pavel Paklov <Pavel.Paklov(a)cyberprotect.ru> Link: https://lore.kernel.org/r/20250325092259.392844-1-Pavel.Paklov@cyberprotect… Signed-off-by: Joerg Roedel <jroedel(a)suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Jiacheng Yu <yujiacheng3(a)huawei.com> --- drivers/iommu/amd/init.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 3c9e01a5a558..d0a4ec42fd12 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -3280,6 +3280,14 @@ static int __init parse_ivrs_acpihid(char *str) while (*uid == '0' && *(uid + 1)) uid++; + if (strlen(hid) >= ACPIHID_HID_LEN) { + pr_err("Invalid command line: hid is too long\n"); + return 1; + } else if (strlen(uid) >= ACPIHID_UID_LEN) { + pr_err("Invalid command line: uid is too long\n"); + return 1; + } + i = early_acpihid_map_size++; memcpy(early_acpihid_map[i].hid, hid, strlen(hid)); memcpy(early_acpihid_map[i].uid, uid, strlen(uid)); -- 2.43.0

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[PATCH OLK-6.6] iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid
by Jiacheng Yu 28 Nov '25

28 Nov '25

From: Pavel Paklov <Pavel.Paklov(a)cyberprotect.ru> stable inclusion from stable-v6.6.90 commit 13d67528e1ae4486e9ab24b70122fab104c73c29 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IC991Z CVE: CVE-2025-37927 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 8dee308e4c01dea48fc104d37f92d5b58c50b96c upstream. There is a string parsing logic error which can lead to an overflow of hid or uid buffers. Comparing ACPIID_LEN against a total string length doesn't take into account the lengths of individual hid and uid buffers so the check is insufficient in some cases. For example if the length of hid string is 4 and the length of the uid string is 260, the length of str will be equal to ACPIID_LEN + 1 but uid string will overflow uid buffer which size is 256. The same applies to the hid string with length 13 and uid string with length 250. Check the length of hid and uid strings separately to prevent buffer overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: ca3bf5d47cec ("iommu/amd: Introduces ivrs_acpihid kernel parameter") Cc: stable(a)vger.kernel.org Signed-off-by: Pavel Paklov <Pavel.Paklov(a)cyberprotect.ru> Link: https://lore.kernel.org/r/20250325092259.392844-1-Pavel.Paklov@cyberprotect… Signed-off-by: Joerg Roedel <jroedel(a)suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Jiacheng Yu <yujiacheng3(a)huawei.com> --- drivers/iommu/amd/init.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 4beddd8cc420..e3d4a23b66fd 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -3690,6 +3690,14 @@ static int __init parse_ivrs_acpihid(char *str) while (*uid == '0' && *(uid + 1)) uid++; + if (strlen(hid) >= ACPIHID_HID_LEN) { + pr_err("Invalid command line: hid is too long\n"); + return 1; + } else if (strlen(uid) >= ACPIHID_UID_LEN) { + pr_err("Invalid command line: uid is too long\n"); + return 1; + } + i = early_acpihid_map_size++; memcpy(early_acpihid_map[i].hid, hid, strlen(hid)); memcpy(early_acpihid_map[i].uid, uid, strlen(uid)); -- 2.43.0

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[PATCH OLK-6.6 v7 0/5] bugfix for xcall2.0
by Xinyu Zheng 28 Nov '25

28 Nov '25

Xinyu Zheng (5): xcall2.0: prefetch: fix value name typos in __do_sys_epoll_pwait xcall2.0: prefetch: keep prefetch module name same with file name xcall2.0: add xcall_subdir_create help to create subdir below /proc/xcall xcall2.0: Fix mem leak in proc_xcall_command xcall2.0: prefetch: introduce struct prefetch_mm_data arch/arm64/include/asm/xcall.h | 4 +- arch/arm64/kernel/xcall/core.c | 25 ++++- arch/arm64/kernel/xcall/proc.c | 61 ++---------- drivers/staging/xcall/prefetch.c | 159 +++++++++++++++++++++---------- include/linux/xcall.h | 1 + 5 files changed, 143 insertions(+), 107 deletions(-) -- 2.34.1

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[openeuler:OLK-6.6 3406/3406] htmldocs: ./include/ub/ubus/ubus.h:387: warning: Function parameter or member 'KABI_RESERVE(1' not described in 'ub_driver'
by kernel test robot 28 Nov '25

28 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: c246f2d81b5390b10c50870d9ef40337e9a5cb86 commit: e40360b68c42fb79a086799873391e728c29c0de [3406/3406] ub:ubus: Add ubus and ubfi opensource document reproduce: (https://download.01.org/0day-ci/archive/20251128/202511280356.zz3MdyMr-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511280356.zz3MdyMr-lkp@intel.com/ All warnings (new ones prefixed by >>): ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ctp_resp_vl_offset' not described in 'ubase_adev_qos' ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ctp_req_vl' not described in 'ubase_adev_qos' ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'dscp_vl' not described in 'ubase_adev_qos' ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ue_max_vl_id' not described in 'ubase_adev_qos' ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ue_sl_vl' not described in 'ubase_adev_qos' >> ./include/ub/ubus/ubus.h:387: warning: Function parameter or member 'KABI_RESERVE(1' not described in 'ub_driver' ./drivers/usb/dwc3/core.h:1370: warning: Function parameter or member 'gfladj_refclk_lpm_sel' not described in 'dwc3' Error: Cannot open file ./include/linux/usb/gadget.h Error: Cannot open file ./include/linux/usb/gadget.h Error: Cannot open file ./include/linux/usb/composite.h Error: Cannot open file ./include/linux/usb/composite.h -- Error: Cannot open file ./include/linux/energy_model.h Error: Cannot open file ./include/linux/energy_model.h Error: Cannot open file ./include/linux/fprobe.h Error: Cannot open file ./include/linux/mutex.h Error: Cannot open file ./include/linux/mutex.h >> ./drivers/ub/ubfi/ubc.h:91: warning: Function parameter or member 'reserved' not described in 'ubrt_ubc_table' >> ./drivers/ub/ubfi/ubc.h:91: warning: Function parameter or member 'ubcs' not described in 'ubrt_ubc_table' >> ./drivers/ub/ubfi/ubc.h:60: warning: Function parameter or member 'reserved' not described in 'ubc_node' >> ./drivers/ub/ubfi/ubc.h:60: warning: Function parameter or member 'reserved2' not described in 'ubc_node' >> ./drivers/ub/ubfi/ubc.h:60: warning: Function parameter or member 'ubc_guid_low' not described in 'ubc_node' >> ./drivers/ub/ubfi/ubc.h:60: warning: Function parameter or member 'ubc_guid_high' not described in 'ubc_node' >> ./include/ub/ubus/ubus.h:387: warning: Function parameter or member 'KABI_RESERVE(1' not described in 'ub_driver' Error: Cannot open file ./include/linux/mod_devicetable.h Error: Cannot open file ./include/linux/fwctl.h ./include/uapi/linux/iommufd.h:615: warning: Enum value 'IOMMU_HW_CAP_PCI_PASID_EXEC' not described in enum 'iommufd_hw_capabilities' ./include/uapi/linux/iommufd.h:615: warning: Enum value 'IOMMU_HW_CAP_PCI_PASID_PRIV' not described in enum 'iommufd_hw_capabilities' ./include/uapi/linux/iommufd.h:615: warning: Excess enum value 'IOMMU_HW_CAP_PASID_EXEC' description in 'iommufd_hw_capabilities' -- WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -function tty_port_operations ./include/linux/tty_port.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -function tty_kref_get ./include/linux/tty.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -function TTY Struct Flags ./include/linux/tty.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -function tty_struct ./include/linux/tty.h' failed with return code 1 Documentation/driver-api/ub/index.rst:3: ERROR: Undefined substitution referenced: "copy". [docutils] >> Documentation/driver-api/ub/ubus:6: ./include/ub/ubus/ubus.h:317: WARNING: Inline emphasis start-string without end-string. [docutils] WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -internal ./include/linux/usb/gadget.h' failed with return code 2 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -internal ./include/linux/usb/composite.h' failed with return code 2 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -function typec_altmode_driver -function typec_altmode_ops ./include/linux/usb/typec_altmode.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -function typec_altmode_register_driver -function typec_altmode_unregister_driver ./include/linux/usb/typec_altmode.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -internal ./include/linux/usb.h' failed with return code 2 -- Documentation/ub/ubase/ubase.rst:185: ERROR: Unexpected indentation. [docutils] Documentation/ub/ubase/ubase.rst:204: ERROR: Unexpected indentation. [docutils] Documentation/ub/ubase/ubase.rst:246: ERROR: Unexpected indentation. [docutils] Documentation/ub/ubus/ubus:112: ./include/ub/ubus/ubus.h:3: WARNING: Duplicate C declaration, also defined at driver-api/ub/ubus:3. Declaration is '.. c:struct:: ub_driver'. [duplicate_declaration.c] >> Documentation/ub/ubus/ubus:112: ./include/ub/ubus/ubus.h:317: WARNING: Inline emphasis start-string without end-string. [docutils] WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -function ub_device_id ./include/linux/mod_devicetable.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 ./include/linux/fwctl.h' failed with return code 1 Documentation/arch/x86/hygon-secure-virtualization.rst: WARNING: document isn't included in any toctree [toc.not_included] Documentation/misc-devices/zcopy.rst: WARNING: document isn't included in any toctree [toc.not_included] Documentation/mm/dynamic_hugetlb.rst: WARNING: document isn't included in any toctree [toc.not_included] vim +387 ./include/ub/ubus/ubus.h e42bc00975898c Junlong Zheng 2025-09-18 308 e42bc00975898c Junlong Zheng 2025-09-18 309 /** e42bc00975898c Junlong Zheng 2025-09-18 310 * struct ub_driver - UB driver structure e42bc00975898c Junlong Zheng 2025-09-18 311 * @node: List of driver structures. e42bc00975898c Junlong Zheng 2025-09-18 312 * @name: Driver name. e42bc00975898c Junlong Zheng 2025-09-18 313 * @id_table: Pointer to table of device IDs the driver is e42bc00975898c Junlong Zheng 2025-09-18 314 * interested in. Most drivers should export this e42bc00975898c Junlong Zheng 2025-09-18 315 * table using MODULE_DEVICE_TABLE(ub,...). e42bc00975898c Junlong Zheng 2025-09-18 316 * @probe: This probing function gets called (during execution e42bc00975898c Junlong Zheng 2025-09-18 317 * of ub_register_driver() for already existing e42bc00975898c Junlong Zheng 2025-09-18 318 * entities or later if a new entity gets inserted) for e42bc00975898c Junlong Zheng 2025-09-18 319 * all UB entities which match the ID table and are not e42bc00975898c Junlong Zheng 2025-09-18 320 * "owned" by the other drivers yet. This function gets e42bc00975898c Junlong Zheng 2025-09-18 321 * passed a "struct ub_entity *" for each entity whose e42bc00975898c Junlong Zheng 2025-09-18 322 * entry in the ID table matches the entity. The probe e42bc00975898c Junlong Zheng 2025-09-18 323 * function returns zero when the driver chooses to e42bc00975898c Junlong Zheng 2025-09-18 324 * take "ownership" of the entity or an error code e42bc00975898c Junlong Zheng 2025-09-18 325 * (negative number) otherwise. e42bc00975898c Junlong Zheng 2025-09-18 326 * The probe function always gets called from process e42bc00975898c Junlong Zheng 2025-09-18 327 * context, so it can sleep. e42bc00975898c Junlong Zheng 2025-09-18 328 * @remove: The remove() function gets called whenever an entity e42bc00975898c Junlong Zheng 2025-09-18 329 * being handled by this driver is removed (either during e42bc00975898c Junlong Zheng 2025-09-18 330 * deregistration of the driver or when it's manually e42bc00975898c Junlong Zheng 2025-09-18 331 * removed from a hot-pluggable slot). e42bc00975898c Junlong Zheng 2025-09-18 332 * The remove function always gets called from process e42bc00975898c Junlong Zheng 2025-09-18 333 * context, so it can sleep. e42bc00975898c Junlong Zheng 2025-09-18 334 * @shutdown: Hook into reboot_notifier_list (kernel/sys.c). e42bc00975898c Junlong Zheng 2025-09-18 335 * Intended to stop any idling operations. 9039065cf6d07a Junlong Zheng 2025-09-20 336 * @virt_configure: Optional driver callback to allow configuration of 59de5029039dc2 Yahui Liu 2025-11-14 337 * UEs. This function is called to enable or disable UEs. 9039065cf6d07a Junlong Zheng 2025-09-20 338 * @virt_notify: Optional driver callback to notify the driver about 59de5029039dc2 Yahui Liu 2025-11-14 339 * changes in UE status. This function is called 59de5029039dc2 Yahui Liu 2025-11-14 340 * when the status of a UE changes. ce21d74812eca9 Junlong Zheng 2025-09-20 341 * @activate: Activate a specific entity. This function is called to ce21d74812eca9 Junlong Zheng 2025-09-20 342 * activate an entity by its index. ce21d74812eca9 Junlong Zheng 2025-09-20 343 * @deactivate: Deactivate a specific entity. This function is called to ce21d74812eca9 Junlong Zheng 2025-09-20 344 * deactivate an entity by its index. 0f0c155e2bb76b Yahui Liu 2025-10-13 345 * @err_handler: Error handling callbacks. 41aa93731e2382 Junlong Zheng 2025-09-18 346 * @groups: Sysfs attribute groups. 41aa93731e2382 Junlong Zheng 2025-09-18 347 * @dev_groups: Attributes attached to the device that will be 41aa93731e2382 Junlong Zheng 2025-09-18 348 * created once it is bound to the driver. e42bc00975898c Junlong Zheng 2025-09-18 349 * @driver: Driver model structure. 41aa93731e2382 Junlong Zheng 2025-09-18 350 * @dynids: List of dynamically added device IDs. fae045218cb429 Junlong Zheng 2025-09-19 351 * @driver_managed_dma: Device driver doesn't use kernel DMA API for DMA. fae045218cb429 Junlong Zheng 2025-09-19 352 * For most device drivers, no need to care about this flag fae045218cb429 Junlong Zheng 2025-09-19 353 * as long as all DMAs are handled through the kernel DMA API. fae045218cb429 Junlong Zheng 2025-09-19 354 * For some special ones, for example VFIO drivers, they know fae045218cb429 Junlong Zheng 2025-09-19 355 * how to manage the DMA themselves and set this flag so that fae045218cb429 Junlong Zheng 2025-09-19 356 * the IOMMU layer will allow them to setup and manage their fae045218cb429 Junlong Zheng 2025-09-19 357 * own I/O address space. e42bc00975898c Junlong Zheng 2025-09-18 358 */ e42bc00975898c Junlong Zheng 2025-09-18 359 struct ub_driver { e42bc00975898c Junlong Zheng 2025-09-18 360 struct list_head node; e42bc00975898c Junlong Zheng 2025-09-18 361 const char *name; e42bc00975898c Junlong Zheng 2025-09-18 362 const struct ub_device_id *id_table; /* Must be non-NULL for probe to be called */ e42bc00975898c Junlong Zheng 2025-09-18 363 /* New entity inserted */ e42bc00975898c Junlong Zheng 2025-09-18 364 int (*probe)(struct ub_entity *uent, const struct ub_device_id *id); e42bc00975898c Junlong Zheng 2025-09-18 365 /* entity removed (NULL if not a hot-plug capable driver) */ e42bc00975898c Junlong Zheng 2025-09-18 366 void (*remove)(struct ub_entity *uent); e42bc00975898c Junlong Zheng 2025-09-18 367 void (*shutdown)(struct ub_entity *uent); 9039065cf6d07a Junlong Zheng 2025-09-20 368 int (*virt_configure)(struct ub_entity *uent, int entity_idx, bool is_en); 9039065cf6d07a Junlong Zheng 2025-09-20 369 int (*virt_notify)(struct ub_entity *uent, int entity_idx, bool is_en); ce21d74812eca9 Junlong Zheng 2025-09-20 370 int (*activate)(struct ub_entity *uent, u32 entity_idx); ce21d74812eca9 Junlong Zheng 2025-09-20 371 int (*deactivate)(struct ub_entity *uent, u32 entity_idx); 0f0c155e2bb76b Yahui Liu 2025-10-13 372 const struct ub_error_handlers *err_handler; 41aa93731e2382 Junlong Zheng 2025-09-18 373 const struct attribute_group **groups; 41aa93731e2382 Junlong Zheng 2025-09-18 374 const struct attribute_group **dev_groups; e42bc00975898c Junlong Zheng 2025-09-18 375 struct device_driver driver; 41aa93731e2382 Junlong Zheng 2025-09-18 376 struct ub_dynids dynids; fae045218cb429 Junlong Zheng 2025-09-19 377 bool driver_managed_dma; f1ef7b8acf16ea Junlong Zheng 2025-09-25 378 f1ef7b8acf16ea Junlong Zheng 2025-09-25 379 KABI_RESERVE(1) f1ef7b8acf16ea Junlong Zheng 2025-09-25 380 KABI_RESERVE(2) f1ef7b8acf16ea Junlong Zheng 2025-09-25 381 KABI_RESERVE(3) f1ef7b8acf16ea Junlong Zheng 2025-09-25 382 KABI_RESERVE(4) f1ef7b8acf16ea Junlong Zheng 2025-09-25 383 KABI_RESERVE(5) f1ef7b8acf16ea Junlong Zheng 2025-09-25 384 KABI_RESERVE(6) f1ef7b8acf16ea Junlong Zheng 2025-09-25 385 KABI_RESERVE(7) f1ef7b8acf16ea Junlong Zheng 2025-09-25 386 KABI_RESERVE(8) e42bc00975898c Junlong Zheng 2025-09-18 @387 }; e42bc00975898c Junlong Zheng 2025-09-18 388 :::::: The code at line 387 was first introduced by commit :::::: e42bc00975898c42b4b9f1dc88fbb3f0748de8a5 ub:ubus: Support for ub bus driver framework :::::: TO: Junlong Zheng <zhengjunlong(a)huawei.com> :::::: CC: Jianquan Lin <linjianquan2(a)huawei.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-5.10] mm: proc: fix compile warning when CONFIG_NUMA=n
by Qi Xi 28 Nov '25

28 Nov '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ID980J -------------------------------- Fix compile warning: 'numa_maps_next' defined but not used. The function use is controlled by CONFIG_NUMA, so its definition should be compiled under the same config option. Fixes: 094a76ab06c3 ("mm: proc: use per_vma mmap_lock for vma traversal.") Signed-off-by: Qi Xi <xiqi2(a)huawei.com> --- fs/proc/task_mmu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 4370eb895e76..2dbc954ec8e7 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -182,6 +182,7 @@ static void *m_next(struct seq_file *m, void *v, loff_t *ppos) return next; } +#ifdef CONFIG_NUMA static void *numa_maps_next(struct seq_file *m, void *v, loff_t *ppos) { struct proc_maps_private *priv = m->private; @@ -277,6 +278,7 @@ static void *numa_maps_next(struct seq_file *m, void *v, loff_t *ppos) *ppos = next ? next->vm_start : -1UL; return next; } +#endif /* CONFIG_NUMA */ static void m_stop(struct seq_file *m, void *v) { -- 2.33.0

2 1

[openeuler:OLK-6.6 3355/3355] block/blk-cgroup.c:2320:18: warning: no previous prototype for function 'bpf_blkcg_get_dev_iostat'
by kernel test robot 28 Nov '25

28 Nov '25

Hi GONG, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: c246f2d81b5390b10c50870d9ef40337e9a5cb86 commit: 969159a7bdeceb8bf814c6e0bf3b5360d9d9b167 [3355/3355] bpf-rvi: blk-cgroup: Add bpf_blkcg_get_dev_iostat() kfunc config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20251128/202511280702.XVMyBDu0-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9e9fe08b16ea2c4d9867fb4974edf2a3776d6ece) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251128/202511280702.XVMyBDu0-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511280702.XVMyBDu0-lkp@intel.com/ All warnings (new ones prefixed by >>): >> block/blk-cgroup.c:2320:18: warning: no previous prototype for function 'bpf_blkcg_get_dev_iostat' [-Wmissing-prototypes] 2320 | __bpf_kfunc void bpf_blkcg_get_dev_iostat(struct blkcg *blkcg, int major, int minor, | ^ block/blk-cgroup.c:2320:13: note: declare 'static' if the function is not intended to be used outside of this translation unit 2320 | __bpf_kfunc void bpf_blkcg_get_dev_iostat(struct blkcg *blkcg, int major, int minor, | ^ | static 1 warning generated. vim +/bpf_blkcg_get_dev_iostat +2320 block/blk-cgroup.c 2306 2307 /* 2308 * Basically inmitating: 2309 * 2310 * - v1: 2311 * - tg_print_rwstat_recursive() in block/blk-throttle.c 2312 * - bfqg_print_rwstat_recursive() in block/bfq-cgroup.c 2313 * - v2: 2314 * - blkcg_print_stat() 2315 * 2316 * without the final printing (e.g. the __blkg_prfill_rwstat() part). 2317 * 2318 * Note that a subsystem can only exist in either cgroup v1 or v2 at the same time. 2319 */ > 2320 __bpf_kfunc void bpf_blkcg_get_dev_iostat(struct blkcg *blkcg, int major, int minor, 2321 struct blkg_rw_iostat *iostat, bool is_v2) 2322 { 2323 struct blkcg_gq *blkg; 2324 char dev_name[64]; 2325 2326 if (!blkcg || !iostat) 2327 return; 2328 2329 if (is_v2) { 2330 if (blkcg == &blkcg_root) 2331 blkcg_fill_root_iostats(); 2332 else 2333 cgroup_rstat_flush_atomic(blkcg->css.cgroup); 2334 } 2335 2336 snprintf(dev_name, sizeof(dev_name), "%d:%d", major, minor); 2337 rcu_read_lock(); 2338 hlist_for_each_entry_rcu(blkg, &blkcg->blkg_list, blkcg_node) { 2339 if (strcmp(dev_name, blkg_dev_name(blkg))) 2340 continue; 2341 spin_lock_irq(&blkg->q->queue_lock); 2342 if (is_v2) 2343 blkcg_get_one_stat_v2(blkg, iostat); 2344 else 2345 blkcg_get_one_stat_v1(blkg, iostat); 2346 spin_unlock_irq(&blkg->q->queue_lock); 2347 break; 2348 } 2349 rcu_read_unlock(); 2350 } 2351 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1938/1938] block/blk-io-hierarchy/stats.o: warning: objtool: missing symbol for section .text
by kernel test robot 28 Nov '25

28 Nov '25

Hi Yu, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: d495515f012a96ae472e8ee75c66680fbdabaddb commit: 17e60c04404d52f58c2233ea5b72014f0d834e75 [1938/1938] block-io-hierarchy: core hierarchy stats implementation config: x86_64-buildonly-randconfig-005-20251127 (https://download.01.org/0day-ci/archive/20251128/202511280607.8AfuGdNA-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9e9fe08b16ea2c4d9867fb4974edf2a3776d6ece) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251128/202511280607.8AfuGdNA-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511280607.8AfuGdNA-lkp@intel.com/ All warnings (new ones prefixed by >>): >> block/blk-io-hierarchy/stats.o: warning: objtool: missing symbol for section .text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1938/1938] drivers/gpio/gpio-phytium-core.o: warning: objtool: missing symbol for section .text
by kernel test robot 28 Nov '25

28 Nov '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: d495515f012a96ae472e8ee75c66680fbdabaddb commit: 00711bad7e372a30c4975ba43811ffa666aff0e1 [1938/1938] gpio: add phytium gpio driver config: x86_64-buildonly-randconfig-005-20251127 (https://download.01.org/0day-ci/archive/20251128/202511280322.yR8eUCYF-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9e9fe08b16ea2c4d9867fb4974edf2a3776d6ece) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251128/202511280322.yR8eUCYF-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511280322.yR8eUCYF-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpio/gpio-phytium-core.o: warning: objtool: missing symbol for section .text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3392/3392] htmldocs: ./include/ub/ubase/ubase_comm_ctrlq.h:90: warning: Function parameter or member 'is_async' not described in 'ubase_ctrlq_msg'
by kernel test robot 27 Nov '25

27 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 344a2673d58146148c1454c968f3f3dadd3b8cd5 commit: c7286df8de9606db5221782319ac1a0e103f9524 [3392/3392] ub: ubase: Introduces the functions and data structures exposed by the ubase driver reproduce: (https://download.01.org/0day-ci/archive/20251127/202511271621.CZZ36bxq-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511271621.CZZ36bxq-lkp@intel.com/ All warnings (new ones prefixed by >>): Error: Cannot open file ./include/linux/tty_port.h Error: Cannot open file ./include/linux/tty_port.h Error: Cannot open file ./include/linux/tty.h Error: Cannot open file ./include/linux/tty.h Error: Cannot open file ./include/linux/tty.h >> ./include/ub/ubase/ubase_comm_ctrlq.h:90: warning: Function parameter or member 'is_async' not described in 'ubase_ctrlq_msg' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'sl_num' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'sl' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'tp_sl_num' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'tp_sl' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ctp_sl_num' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ctp_sl' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'vl_num' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'vl' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'tp_vl_num' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'tp_resp_vl_offset' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'tp_req_vl' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ctp_vl_num' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ctp_resp_vl_offset' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ctp_req_vl' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'dscp_vl' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ue_max_vl_id' not described in 'ubase_adev_qos' >> ./include/ub/ubase/ubase_comm_dev.h:318: warning: Function parameter or member 'ue_sl_vl' not described in 'ubase_adev_qos' ./drivers/usb/dwc3/core.h:1370: warning: Function parameter or member 'gfladj_refclk_lpm_sel' not described in 'dwc3' Error: Cannot open file ./include/linux/usb/gadget.h Error: Cannot open file ./include/linux/usb/gadget.h Error: Cannot open file ./include/linux/usb/composite.h Error: Cannot open file ./include/linux/usb/composite.h vim +90 ./include/ub/ubase/ubase_comm_ctrlq.h 727362c0978ca7 Xiongchuan Zhou 2025-09-20 60 c7286df8de9606 Fengyan Mu 2025-11-21 61 /** c7286df8de9606 Fengyan Mu 2025-11-21 62 * struct ubase_ctrlq_msg - ubase ctrlq msg structure c7286df8de9606 Fengyan Mu 2025-11-21 63 * @service_ver: ctrlq service version c7286df8de9606 Fengyan Mu 2025-11-21 64 * @service_type: ctrlq service type c7286df8de9606 Fengyan Mu 2025-11-21 65 * @opcode: ctrlq opcode c7286df8de9606 Fengyan Mu 2025-11-21 66 * @need_resp: whether the message need a response c7286df8de9606 Fengyan Mu 2025-11-21 67 * @is_resp: whether the message is a response c7286df8de9606 Fengyan Mu 2025-11-21 68 * @resv: reserved bits c7286df8de9606 Fengyan Mu 2025-11-21 69 * @resp_ret: the return value of response message c7286df8de9606 Fengyan Mu 2025-11-21 70 * @resp_seq: response message sequence c7286df8de9606 Fengyan Mu 2025-11-21 71 * @in_size: input data buffer size c7286df8de9606 Fengyan Mu 2025-11-21 72 * @out_size: output data buffer size c7286df8de9606 Fengyan Mu 2025-11-21 73 * @in: input data buffer c7286df8de9606 Fengyan Mu 2025-11-21 74 * @out: output data buffer c7286df8de9606 Fengyan Mu 2025-11-21 75 */ d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 76 struct ubase_ctrlq_msg { d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 77 enum ubase_ctrlq_ser_ver service_ver; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 78 enum ubase_ctrlq_ser_type service_type; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 79 u8 opcode; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 80 u8 need_resp : 1; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 81 u8 is_resp : 1; 0ee149f4767688 Fengyan Mu 2025-11-12 82 u8 is_async : 1; 0ee149f4767688 Fengyan Mu 2025-11-12 83 u8 resv : 5; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 84 u8 resp_ret; /* must set when the is_resp field is true. */ d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 85 u16 resp_seq; /* must set when the is_resp field is true. */ d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 86 u16 in_size; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 87 u16 out_size; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 88 void *in; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 89 void *out; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 @90 }; d7ce08663cc5bc Xiongchuan Zhou 2025-09-17 91 :::::: The code at line 90 was first introduced by commit :::::: d7ce08663cc5bc33993af7b046eb09e98640c404 ub: ubase: Supports for ctrl queue management. :::::: TO: Xiongchuan Zhou <zhouxiongchuan(a)h-partners.com> :::::: CC: Fengyan Mu <mufengyan(a)huawei.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6 0/1] zcopy: Fix context switch within RCU read-side
by Liu Mingrui 27 Nov '25

27 Nov '25

zcopy: Fix context switch within RCU read-side Liu Mingrui (1): zcopy: Fix context switch within RCU read-side error drivers/misc/zcopy/zcopy.c | 5 +++++ 1 file changed, 5 insertions(+) -- 2.25.1

2 2