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[PATCH OLK-6.6 0/2] Fix CVE-2025-40123
by Tengda Wu 20 Nov '25

20 Nov '25

Fix CVE-2025-40123. Daniel Borkmann (2): bpf: Enforce expected_attach_type for tailcall compatibility selftests/bpf: Add test case for different expected_attach_type include/linux/bpf.h | 1 + kernel/bpf/core.c | 5 +++ .../bpf/prog_tests/xdp_devmap_attach.c | 31 ++++++++++++++++++- .../bpf/progs/test_xdp_devmap_tailcall.c | 29 +++++++++++++++++ 4 files changed, 65 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/bpf/progs/test_xdp_devmap_tailcall.c -- 2.34.1

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[PATCH OLK-5.10 0/2] Fix CVE-2025-40123
by Tengda Wu 20 Nov '25

20 Nov '25

Fix CVE-2025-40123. Daniel Borkmann (2): bpf: Enforce expected_attach_type for tailcall compatibility selftests/bpf: Add test case for different expected_attach_type include/linux/bpf.h | 1 + kernel/bpf/core.c | 5 ++ .../bpf/prog_tests/xdp_devmap_attach.c | 62 ++++++++++++++++++- .../bpf/progs/test_xdp_devmap_tailcall.c | 18 ++++++ .../selftests/bpf/progs/xdp_tailcall_devmap.c | 19 ++++++ 5 files changed, 104 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/bpf/progs/test_xdp_devmap_tailcall.c create mode 100644 tools/testing/selftests/bpf/progs/xdp_tailcall_devmap.c -- 2.34.1

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[openeuler:OLK-6.6 3281/3281] drivers/crypto/ccp/hygon/ccp-mdev.c:226:9: error: call to undeclared function 'pci_user_read_config_byte'; ISO C99 and later do not support implicit function declarations
by kernel test robot 20 Nov '25

20 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: dfb9bd9242c2350c127d51a126976ed386e9cc48 commit: 592817a30ddc0ef43c7f5b5fe906ae37cf3bea3b [3281/3281] crypto: ccp: add ccp-mdev functionality to the ccp module. config: arm64-randconfig-003-20251120 (https://download.01.org/0day-ci/archive/20251120/202511200645.o5HzMq38-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251120/202511200645.o5HzMq38-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/202511200645.o5HzMq38-lkp@intel.com/ All errors (new ones prefixed by >>): >> drivers/crypto/ccp/hygon/ccp-mdev.c:226:9: error: call to undeclared function 'pci_user_read_config_byte'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 226 | ret = pci_user_read_config_byte(pdev, offset, &tmp); | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:226:9: note: did you mean 'pci_read_config_byte'? include/linux/pci.h:1962:1: note: 'pci_read_config_byte' declared here 1962 | _PCI_NOP_ALL(read, *) | ^ include/linux/pci.h:1959:28: note: expanded from macro '_PCI_NOP_ALL' 1959 | #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ | ^ include/linux/pci.h:1955:20: note: expanded from macro '_PCI_NOP' 1955 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ | ^ <scratch space>:32:1: note: expanded from here 32 | pci_read_config_byte | ^ >> drivers/crypto/ccp/hygon/ccp-mdev.c:231:9: error: call to undeclared function 'pci_user_read_config_word'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 231 | ret = pci_user_read_config_word(pdev, offset, &tmp); | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:231:9: note: did you mean 'pci_read_config_word'? include/linux/pci.h:1962:1: note: 'pci_read_config_word' declared here 1962 | _PCI_NOP_ALL(read, *) | ^ include/linux/pci.h:1960:5: note: expanded from macro '_PCI_NOP_ALL' 1960 | _PCI_NOP(o, word, u16 x) \ | ^ include/linux/pci.h:1955:20: note: expanded from macro '_PCI_NOP' 1955 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ | ^ <scratch space>:35:1: note: expanded from here 35 | pci_read_config_word | ^ >> drivers/crypto/ccp/hygon/ccp-mdev.c:234:9: error: call to undeclared function 'pci_user_read_config_dword'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 234 | ret = pci_user_read_config_dword(pdev, offset, (u32 *)&tmp_val); | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:234:9: note: did you mean 'pci_read_config_dword'? include/linux/pci.h:1962:1: note: 'pci_read_config_dword' declared here 1962 | _PCI_NOP_ALL(read, *) | ^ include/linux/pci.h:1961:5: note: expanded from macro '_PCI_NOP_ALL' 1961 | _PCI_NOP(o, dword, u32 x) | ^ include/linux/pci.h:1955:20: note: expanded from macro '_PCI_NOP' 1955 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ | ^ <scratch space>:38:1: note: expanded from here 38 | pci_read_config_dword | ^ >> drivers/crypto/ccp/hygon/ccp-mdev.c:255:9: error: call to undeclared function 'pci_user_write_config_byte'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 255 | ret = pci_user_write_config_byte(pdev, offset, tmp_val); | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:255:9: note: did you mean 'pci_write_config_byte'? include/linux/pci.h:1963:1: note: 'pci_write_config_byte' declared here 1963 | _PCI_NOP_ALL(write,) | ^ include/linux/pci.h:1959:28: note: expanded from macro '_PCI_NOP_ALL' 1959 | #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ | ^ include/linux/pci.h:1955:20: note: expanded from macro '_PCI_NOP' 1955 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ | ^ <scratch space>:41:1: note: expanded from here 41 | pci_write_config_byte | ^ >> drivers/crypto/ccp/hygon/ccp-mdev.c:257:9: error: call to undeclared function 'pci_user_write_config_word'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 257 | ret = pci_user_write_config_word(pdev, offset, tmp_val); | ^ >> drivers/crypto/ccp/hygon/ccp-mdev.c:259:9: error: call to undeclared function 'pci_user_write_config_dword'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 259 | ret = pci_user_write_config_dword(pdev, offset, tmp_val); | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:1144:15: warning: no previous prototype for function 'ccp_pin_memory' [-Wmissing-prototypes] 1144 | struct page **ccp_pin_memory(struct ccp_private *private, unsigned long uaddr, | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:1144:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1144 | struct page **ccp_pin_memory(struct ccp_private *private, unsigned long uaddr, | ^ | static >> drivers/crypto/ccp/hygon/ccp-mdev.c:1788:46: error: use of undeclared identifier 'pci_bus_type'; did you mean 'pci_pcie_type'? 1788 | ccp_mdev_data.domain = iommu_domain_alloc(&pci_bus_type); | ^~~~~~~~~~~~ | pci_pcie_type include/linux/pci.h:2489:19: note: 'pci_pcie_type' declared here 2489 | static inline int pci_pcie_type(const struct pci_dev *dev) | ^ >> drivers/crypto/ccp/hygon/ccp-mdev.c:1788:45: error: incompatible pointer types passing 'int (*)(const struct pci_dev *)' to parameter of type 'const struct bus_type *' [-Wincompatible-pointer-types] 1788 | ccp_mdev_data.domain = iommu_domain_alloc(&pci_bus_type); | ^~~~~~~~~~~~~ include/linux/iommu.h:970:71: note: passing argument to parameter 'bus' here 970 | extern struct iommu_domain *iommu_domain_alloc(const struct bus_type *bus); | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:1977:22: error: use of undeclared identifier 'pci_bus_type'; did you mean 'pci_pcie_type'? 1977 | if (!iommu_present(&pci_bus_type)) { | ^~~~~~~~~~~~ | pci_pcie_type include/linux/pci.h:2489:19: note: 'pci_pcie_type' declared here 2489 | static inline int pci_pcie_type(const struct pci_dev *dev) | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:1977:21: error: incompatible pointer types passing 'int (*)(const struct pci_dev *)' to parameter of type 'const struct bus_type *' [-Wincompatible-pointer-types] 1977 | if (!iommu_present(&pci_bus_type)) { | ^~~~~~~~~~~~~ include/linux/iommu.h:967:50: note: passing argument to parameter 'bus' here 967 | extern bool iommu_present(const struct bus_type *bus); | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:2018:22: error: use of undeclared identifier 'pci_bus_type'; did you mean 'pci_pcie_type'? 2018 | if (!iommu_present(&pci_bus_type)) { | ^~~~~~~~~~~~ | pci_pcie_type include/linux/pci.h:2489:19: note: 'pci_pcie_type' declared here 2489 | static inline int pci_pcie_type(const struct pci_dev *dev) | ^ drivers/crypto/ccp/hygon/ccp-mdev.c:2018:21: error: incompatible pointer types passing 'int (*)(const struct pci_dev *)' to parameter of type 'const struct bus_type *' [-Wincompatible-pointer-types] 2018 | if (!iommu_present(&pci_bus_type)) { | ^~~~~~~~~~~~~ include/linux/iommu.h:967:50: note: passing argument to parameter 'bus' here 967 | extern bool iommu_present(const struct bus_type *bus); | ^ 1 warning and 12 errors generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y] Selected by [y]: - ARM64 [=y] vim +/pci_user_read_config_byte +226 drivers/crypto/ccp/hygon/ccp-mdev.c 208 209 static int handle_pci_cfg_read(struct mdev_state *mdev_state, int offset, 210 __le32 *val, int count) 211 { 212 struct pci_dev *pdev = NULL; 213 u32 tmp_val = 0; 214 int ret = -EINVAL; 215 216 if (!mdev_state || !mdev_state->iommu) { 217 pr_err("ccp: invalid mdev_state.\n"); 218 return ret; 219 } 220 221 pdev = mdev_state->iommu->pdev; 222 223 if (count == 1) { 224 u8 tmp; 225 > 226 ret = pci_user_read_config_byte(pdev, offset, &tmp); 227 tmp_val = tmp; 228 } else if (count == 2) { 229 u16 tmp; 230 > 231 ret = pci_user_read_config_word(pdev, offset, &tmp); 232 tmp_val = tmp; 233 } else if (count == 4) > 234 ret = pci_user_read_config_dword(pdev, offset, (u32 *)&tmp_val); 235 236 *val = cpu_to_le32(tmp_val); 237 return ret; 238 } 239 240 static int handle_pci_cfg_write(struct mdev_state *mdev_state, u16 offset, 241 u8 *buf, u32 count) 242 { 243 u32 tmp_val = le32_to_cpu(*(u32 *)buf); 244 struct pci_dev *pdev = NULL; 245 int ret = -EINVAL; 246 247 if (!mdev_state || !mdev_state->iommu) { 248 pr_err("ccp: invalid mdev_state.\n"); 249 return ret; 250 } 251 252 pdev = mdev_state->iommu->pdev; 253 254 if (count == 1) > 255 ret = pci_user_write_config_byte(pdev, offset, tmp_val); 256 else if (count == 2) > 257 ret = pci_user_write_config_word(pdev, offset, tmp_val); 258 else if (count == 4) > 259 ret = pci_user_write_config_dword(pdev, offset, tmp_val); 260 261 return ret; 262 } 263 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1935/1935] mm/share_pool.c:1043:2: error: implicit declaration of function 'sysctl_compaction_handler'; did you mean 'compaction_failed'?
by kernel test robot 19 Nov '25

19 Nov '25

Hi Zhou, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 6c5657aecca1857be6ea39f789159c9acfde2f9e commit: d45b33b72c530e64219ad997947a33f6e07d339c [1935/1935] share pool: Try to compact when memory is insufficient config: arm64-randconfig-r132-20251119 (https://download.01.org/0day-ci/archive/20251119/202511192140.dgf3lMX3-lkp@…) compiler: aarch64-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251119/202511192140.dgf3lMX3-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/202511192140.dgf3lMX3-lkp@intel.com/ All errors (new ones prefixed by >>): mm/share_pool.c:59:5: sparse: sparse: symbol 'enable_mdc_default_group' was not declared. Should it be static? mm/share_pool.c:1043:9: sparse: sparse: undefined identifier 'sysctl_compaction_handler' mm/share_pool.c:1772:21: sparse: sparse: undefined identifier 'huge_ptep_get' mm/share_pool.c:1772:34: sparse: sparse: invalid initializer mm/share_pool.c:2524:30: sparse: sparse: undefined identifier 'huge_pte_none' mm/share_pool.c:2537:23: sparse: sparse: undefined identifier 'huge_add_to_page_cache' mm/share_pool.c:2553:14: sparse: sparse: undefined identifier 'huge_pte_none' mm/share_pool.c:2559:9: sparse: sparse: undefined identifier 'set_huge_pte_at' mm/share_pool.c:2561:9: sparse: sparse: undefined identifier 'hugetlb_count_add' mm/share_pool.c:2597:24: sparse: sparse: undefined identifier 'hugetlb_alloc_hugepage' mm/share_pool.c: In function 'sp_compact_nodes': >> mm/share_pool.c:1043:2: error: implicit declaration of function 'sysctl_compaction_handler'; did you mean 'compaction_failed'? [-Werror=implicit-function-declaration] sysctl_compaction_handler(NULL, 1, NULL, NULL, NULL); ^~~~~~~~~~~~~~~~~~~~~~~~~ compaction_failed mm/share_pool.c: In function 'sp_hugetlb_entry': mm/share_pool.c:1772:14: error: implicit declaration of function 'huge_ptep_get'; did you mean 'huge_pte_lock'? [-Werror=implicit-function-declaration] pte_t pte = huge_ptep_get(ptep); ^~~~~~~~~~~~~ huge_pte_lock mm/share_pool.c:1772:14: error: invalid initializer mm/share_pool.c: In function 'sharepool_no_page': mm/share_pool.c:2524:9: error: implicit declaration of function 'huge_pte_none'; did you mean 'huge_pte_lock'? [-Werror=implicit-function-declaration] if (!huge_pte_none(huge_ptep_get(ptep))) { ^~~~~~~~~~~~~ huge_pte_lock mm/share_pool.c:2537:9: error: implicit declaration of function 'huge_add_to_page_cache'; did you mean 'add_to_page_cache'? [-Werror=implicit-function-declaration] err = huge_add_to_page_cache(page, mapping, idx); ^~~~~~~~~~~~~~~~~~~~~~ add_to_page_cache mm/share_pool.c:2559:2: error: implicit declaration of function 'set_huge_pte_at'; did you mean 'set_huge_swap_pte_at'? [-Werror=implicit-function-declaration] set_huge_pte_at(mm, haddr, ptep, new_pte); ^~~~~~~~~~~~~~~ set_huge_swap_pte_at mm/share_pool.c:2561:2: error: implicit declaration of function 'hugetlb_count_add'; did you mean 'hugetlb_count_sub'? [-Werror=implicit-function-declaration] hugetlb_count_add(pages_per_huge_page(h), mm); ^~~~~~~~~~~~~~~~~ hugetlb_count_sub mm/share_pool.c: In function 'sp_alloc_pages': mm/share_pool.c:2597:10: error: implicit declaration of function 'hugetlb_alloc_hugepage'; did you mean 'vmalloc_hugepage'? [-Werror=implicit-function-declaration] return hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE); ^~~~~~~~~~~~~~~~~~~~~~ vmalloc_hugepage mm/share_pool.c:2597:47: error: 'HUGETLB_ALLOC_NONE' undeclared (first use in this function); did you mean 'HUGETLB_ANON_FILE'? return hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE); ^~~~~~~~~~~~~~~~~~ HUGETLB_ANON_FILE mm/share_pool.c:2597:47: note: each undeclared identifier is reported only once for each function it appears in mm/share_pool.c:2600:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ cc1: some warnings being treated as errors -- mm/share_pool.c: In function 'sp_compact_nodes': >> mm/share_pool.c:1043:2: error: implicit declaration of function 'sysctl_compaction_handler'; did you mean 'compaction_failed'? [-Werror=implicit-function-declaration] sysctl_compaction_handler(NULL, 1, NULL, NULL, NULL); ^~~~~~~~~~~~~~~~~~~~~~~~~ compaction_failed mm/share_pool.c: In function 'sp_hugetlb_entry': mm/share_pool.c:1772:14: error: implicit declaration of function 'huge_ptep_get'; did you mean 'huge_pte_lock'? [-Werror=implicit-function-declaration] pte_t pte = huge_ptep_get(ptep); ^~~~~~~~~~~~~ huge_pte_lock mm/share_pool.c:1772:14: error: invalid initializer mm/share_pool.c: In function 'sharepool_no_page': mm/share_pool.c:2524:9: error: implicit declaration of function 'huge_pte_none'; did you mean 'huge_pte_lock'? [-Werror=implicit-function-declaration] if (!huge_pte_none(huge_ptep_get(ptep))) { ^~~~~~~~~~~~~ huge_pte_lock mm/share_pool.c:2537:9: error: implicit declaration of function 'huge_add_to_page_cache'; did you mean 'add_to_page_cache'? [-Werror=implicit-function-declaration] err = huge_add_to_page_cache(page, mapping, idx); ^~~~~~~~~~~~~~~~~~~~~~ add_to_page_cache mm/share_pool.c:2559:2: error: implicit declaration of function 'set_huge_pte_at'; did you mean 'set_huge_swap_pte_at'? [-Werror=implicit-function-declaration] set_huge_pte_at(mm, haddr, ptep, new_pte); ^~~~~~~~~~~~~~~ set_huge_swap_pte_at mm/share_pool.c:2561:2: error: implicit declaration of function 'hugetlb_count_add'; did you mean 'hugetlb_count_sub'? [-Werror=implicit-function-declaration] hugetlb_count_add(pages_per_huge_page(h), mm); ^~~~~~~~~~~~~~~~~ hugetlb_count_sub mm/share_pool.c: In function 'sp_alloc_pages': mm/share_pool.c:2597:10: error: implicit declaration of function 'hugetlb_alloc_hugepage'; did you mean 'vmalloc_hugepage'? [-Werror=implicit-function-declaration] return hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE); ^~~~~~~~~~~~~~~~~~~~~~ vmalloc_hugepage mm/share_pool.c:2597:47: error: 'HUGETLB_ALLOC_NONE' undeclared (first use in this function); did you mean 'HUGETLB_ANON_FILE'? return hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE); ^~~~~~~~~~~~~~~~~~ HUGETLB_ANON_FILE mm/share_pool.c:2597:47: note: each undeclared identifier is reported only once for each function it appears in mm/share_pool.c:2600:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ cc1: some warnings being treated as errors Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for HARDLOCKUP_DETECTOR Depends on [n]: DEBUG_KERNEL [=n] && !S390 && (HAVE_HARDLOCKUP_DETECTOR_PERF [=n] || HAVE_HARDLOCKUP_DETECTOR_ARCH [=y]) Selected by [y]: - SDEI_WATCHDOG [=y] && <choice> && ARM_SDE_INTERFACE [=y] && !HARDLOCKUP_CHECK_TIMESTAMP [=n] vim +1043 mm/share_pool.c 1039 1040 static unsigned long last_jiffies; 1041 static void sp_compact_nodes(struct work_struct *work) 1042 { > 1043 sysctl_compaction_handler(NULL, 1, NULL, NULL, NULL); 1044 1045 kfree(work); 1046 } 1047 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3278/3278] include/linux/xsched.h:309:28: error: array type has incomplete element type 'struct cgroup_file'
by kernel test robot 19 Nov '25

19 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: dfb9bd9242c2350c127d51a126976ed386e9cc48 commit: aafde051ac61687823976cc892fb3c416101d694 [3278/3278] xsched: Add support for CFS quota for cgroups config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20251119/202511192040.YIPXCVFH-lkp@…) compiler: aarch64-linux-gcc (GCC) 15.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251119/202511192040.YIPXCVFH-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/202511192040.YIPXCVFH-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from kernel/xsched/vstream.c:23: include/linux/xsched.h:276:36: error: field 'css' has incomplete type 276 | struct cgroup_subsys_state css; | ^~~ >> include/linux/xsched.h:309:28: error: array type has incomplete element type 'struct cgroup_file' 309 | struct cgroup_file xcu_file[NR_XCU_FILE_TYPES]; | ^~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for ARCH_SUPPORTS_SCHED_SOFT_QUOTA Depends on [n]: CGROUPS [=n] Selected by [y]: - ARM64 [=y] WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y] Selected by [y]: - ARM64 [=y] vim +309 include/linux/xsched.h 272 273 /* Xsched scheduling control group */ 274 struct xsched_group { 275 /* Cgroups controller structure */ 276 struct cgroup_subsys_state css; 277 278 /* Control group settings: */ 279 int sched_class; 280 int prio; 281 282 /* Bandwidth setting: shares value set by user */ 283 u64 shares_cfg; 284 u64 shares_cfg_red; 285 u32 weight; 286 u64 children_shares_sum; 287 288 /* Bandwidth setting: maximal quota in period */ 289 s64 quota; 290 /* record the runtime of operators during the period */ 291 s64 runtime; 292 s64 period; 293 struct hrtimer quota_timeout; 294 struct work_struct refill_work; 295 296 struct xsched_group_xcu_priv perxcu_priv[XSCHED_NR_CUS]; 297 298 /* Groups hierarchcy */ 299 struct xsched_group *parent; 300 struct list_head children_groups; 301 struct list_head group_node; 302 303 spinlock_t lock; 304 305 /* for XSE to move in perxcu */ 306 struct list_head members; 307 308 /* to control the xcu.{period, quota, shares} files shown or not */ > 309 struct cgroup_file xcu_file[NR_XCU_FILE_TYPES]; 310 struct work_struct file_show_work; 311 }; 312 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3278/3278] include/linux/xsched.h:309:29: error: array has incomplete element type 'struct cgroup_file'
by kernel test robot 19 Nov '25

19 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: dfb9bd9242c2350c127d51a126976ed386e9cc48 commit: aafde051ac61687823976cc892fb3c416101d694 [3278/3278] xsched: Add support for CFS quota for cgroups config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20251119/202511191942.8hZlsAYZ-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251119/202511191942.8hZlsAYZ-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/202511191942.8hZlsAYZ-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from kernel/xsched/vstream.c:23: include/linux/xsched.h:276:29: error: field has incomplete type 'struct cgroup_subsys_state' 276 | struct cgroup_subsys_state css; | ^ include/linux/kthread.h:219:8: note: forward declaration of 'struct cgroup_subsys_state' 219 | struct cgroup_subsys_state; | ^ In file included from kernel/xsched/vstream.c:23: >> include/linux/xsched.h:309:29: error: array has incomplete element type 'struct cgroup_file' 309 | struct cgroup_file xcu_file[NR_XCU_FILE_TYPES]; | ^ include/linux/xsched.h:309:9: note: forward declaration of 'struct cgroup_file' 309 | struct cgroup_file xcu_file[NR_XCU_FILE_TYPES]; | ^ 2 errors generated. vim +309 include/linux/xsched.h 272 273 /* Xsched scheduling control group */ 274 struct xsched_group { 275 /* Cgroups controller structure */ 276 struct cgroup_subsys_state css; 277 278 /* Control group settings: */ 279 int sched_class; 280 int prio; 281 282 /* Bandwidth setting: shares value set by user */ 283 u64 shares_cfg; 284 u64 shares_cfg_red; 285 u32 weight; 286 u64 children_shares_sum; 287 288 /* Bandwidth setting: maximal quota in period */ 289 s64 quota; 290 /* record the runtime of operators during the period */ 291 s64 runtime; 292 s64 period; 293 struct hrtimer quota_timeout; 294 struct work_struct refill_work; 295 296 struct xsched_group_xcu_priv perxcu_priv[XSCHED_NR_CUS]; 297 298 /* Groups hierarchcy */ 299 struct xsched_group *parent; 300 struct list_head children_groups; 301 struct list_head group_node; 302 303 spinlock_t lock; 304 305 /* for XSE to move in perxcu */ 306 struct list_head members; 307 308 /* to control the xcu.{period, quota, shares} files shown or not */ > 309 struct cgroup_file xcu_file[NR_XCU_FILE_TYPES]; 310 struct work_struct file_show_work; 311 }; 312 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-5.10 0/1] zcopy: Remove the dump_pagetable interface
by Liu Mingrui 19 Nov '25

19 Nov '25

zcopy: Remove the dump_pagetable interface Liu Mingrui (1): zcopy: Remove the dump_pagetable interface drivers/misc/zcopy/zcopy.c | 24 ------------------------ 1 file changed, 24 deletions(-) -- 2.25.1

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[PATCH OLK-6.6 0/2] some minor bugfix about zcopy
by Liu Mingrui 19 Nov '25

19 Nov '25

Fix some minor bugs. Liu Mingrui (2): zcopy: Fix the incorrect mapping size passed in attach_pte_range zcopy: Remove the dump_pagetable interface drivers/misc/zcopy/zcopy.c | 25 +------------------------ 1 file changed, 1 insertion(+), 24 deletions(-) -- 2.25.1

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[openeuler:OLK-6.6 3278/3278] include/linux/xsched.h:265:29: error: field has incomplete type 'struct cgroup_subsys_state'
by kernel test robot 19 Nov '25

19 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 4552257bd9515ad6f78bd3691c7379beb42dc3cd commit: 43bbefc53356009d3603faa2c6e6a2858f724e4d [3278/3278] xsched: Add XCU control group implementation and its backend in xsched CFS config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20251119/202511191801.j34oMzNw-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251119/202511191801.j34oMzNw-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/202511191801.j34oMzNw-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from kernel/xsched/vstream.c:23: >> include/linux/xsched.h:265:29: error: field has incomplete type 'struct cgroup_subsys_state' 265 | struct cgroup_subsys_state css; | ^ include/linux/kthread.h:219:8: note: forward declaration of 'struct cgroup_subsys_state' 219 | struct cgroup_subsys_state; | ^ 1 error generated. vim +265 include/linux/xsched.h 261 262 /* Xsched scheduling control group */ 263 struct xsched_group { 264 /* Cgroups controller structure */ > 265 struct cgroup_subsys_state css; 266 267 /* Control group settings: */ 268 int sched_class; 269 int prio; 270 271 /* Bandwidth setting: shares value set by user */ 272 u64 shares_cfg; 273 u64 shares_cfg_red; 274 u32 weight; 275 u64 children_shares_sum; 276 277 struct xsched_group_xcu_priv perxcu_priv[XSCHED_NR_CUS]; 278 279 /* Groups hierarchcy */ 280 struct xsched_group *parent; 281 struct list_head children_groups; 282 struct list_head group_node; 283 284 spinlock_t lock; 285 286 /* for XSE to move in perxcu */ 287 struct list_head members; 288 }; 289 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3278/3278] include/linux/xsched.h:265:36: error: field 'css' has incomplete type
by kernel test robot 19 Nov '25

19 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 4552257bd9515ad6f78bd3691c7379beb42dc3cd commit: 43bbefc53356009d3603faa2c6e6a2858f724e4d [3278/3278] xsched: Add XCU control group implementation and its backend in xsched CFS config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20251119/202511191730.FhCbWCm7-lkp@…) compiler: aarch64-linux-gcc (GCC) 15.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251119/202511191730.FhCbWCm7-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/202511191730.FhCbWCm7-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from kernel/xsched/vstream.c:23: >> include/linux/xsched.h:265:36: error: field 'css' has incomplete type 265 | struct cgroup_subsys_state css; | ^~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for ARCH_SUPPORTS_SCHED_SOFT_QUOTA Depends on [n]: CGROUPS [=n] Selected by [y]: - ARM64 [=y] WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y] Selected by [y]: - ARM64 [=y] vim +/css +265 include/linux/xsched.h 261 262 /* Xsched scheduling control group */ 263 struct xsched_group { 264 /* Cgroups controller structure */ > 265 struct cgroup_subsys_state css; 266 267 /* Control group settings: */ 268 int sched_class; 269 int prio; 270 271 /* Bandwidth setting: shares value set by user */ 272 u64 shares_cfg; 273 u64 shares_cfg_red; 274 u32 weight; 275 u64 children_shares_sum; 276 277 struct xsched_group_xcu_priv perxcu_priv[XSCHED_NR_CUS]; 278 279 /* Groups hierarchcy */ 280 struct xsched_group *parent; 281 struct list_head children_groups; 282 struct list_head group_node; 283 284 spinlock_t lock; 285 286 /* for XSE to move in perxcu */ 287 struct list_head members; 288 }; 289 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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