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[PATCH OLK-6.6 0/2] CVE-2025-40198
by Yongjian Sun 20 Nov '25

20 Nov '25

Fedor Pchelkin (1): ext4: fix string copying in parse_apply_sb_mount_options() Theodore Ts'o (1): ext4: avoid potential buffer over-read in parse_apply_sb_mount_options() fs/ext4/super.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) -- 2.39.2

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[PATCH OLK-6.6 0/3] CVE-2025-40179
by Yongjian Sun 20 Nov '25

20 Nov '25

Jan Kara (2): ext4: verify orphan file size is not too big ext4: free orphan info with kvfree Liao Yuanhong (1): ext4: use kmalloc_array() for array space allocation fs/ext4/orphan.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) -- 2.39.2

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[PATCH OLK-6.6 0/3] CVE-2025-40179
by Yongjian Sun 20 Nov '25

20 Nov '25

Jan Kara (2): ext4: verify orphan file size is not too big ext4: free orphan info with kvfree Liao Yuanhong (1): ext4: use kmalloc_array() for array space allocation fs/ext4/orphan.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) -- 2.39.2

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[openeuler:OLK-6.6 3269/3269] htmldocs: Documentation/misc-devices/zcopy.rst:18: WARNING: Title underline too short.
by kernel test robot 20 Nov '25

20 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: dfb9bd9242c2350c127d51a126976ed386e9cc48 commit: 3a1e43e597d3d6f872dd786af8dad22947c8239a [3269/3269] zcopy: Add ZCOPY documentation reproduce: (https://download.01.org/0day-ci/archive/20251120/202511200347.5qevtABT-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/202511200347.5qevtABT-lkp@intel.com/ All warnings (new ones prefixed by >>): WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -function HID quirks ./include/linux/hid.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 ./include/linux/i2c-atr.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -internal ./include/linux/mutex.h' failed with return code 2 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -function klp_patch -function klp_object -function klp_func -function klp_callbacks -function klp_state ./include/linux/livepatch.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 ./include/linux/seqlock.h' failed with return code 1 >> Documentation/misc-devices/zcopy.rst:18: WARNING: Title underline too short. -- Key features ----------- [docutils] >> Documentation/misc-devices/zcopy.rst:18: WARNING: Title underline too short. -- WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 ./include/linux/fprobe.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 -internal ./include/linux/mutex.h' failed with return code 2 Documentation/translations/zh_TW/dev-tools/index.rst:21: WARNING: toctree contains reference to nonexisting document 'translations/zh_TW/dev-tools/sparse' [toc.not_readable] 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] Documentation/networking/device_drivers/ethernet/nebula-matrix/m18120.rst: WARNING: document isn't included in any toctree [toc.not_included] Documentation/networking/hinic3.rst: WARNING: document isn't included in any toctree [toc.not_included] Documentation/scsi/hisi_raid.rst: WARNING: document isn't included in any toctree [toc.not_included] Documentation/scsi/sssraid.rst: WARNING: document isn't included in any toctree [toc.not_included] -- Important constraints and requirements --------------------- [docutils] Documentation/misc-devices/zcopy.rst:61: ERROR: Unexpected indentation. [docutils] >> Documentation/misc-devices/zcopy.rst:58: WARNING: Inline emphasis start-string without end-string. [docutils] Documentation/misc-devices/zcopy.rst:61: WARNING: Inline emphasis start-string without end-string. [docutils] >> Documentation/misc-devices/zcopy.rst:64: WARNING: Block quote ends without a blank line; unexpected unindent. [docutils] WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 ./include/linux/damon.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 ./include/linux/highmem.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 ./include/linux/highmem-internal.h' failed with return code 1 WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.2.3 ./include/linux/migrate.h' failed with return code 1 Documentation/networking/device_drivers/ethernet/3snic/sssnic.rst:42: WARNING: Enumerated list ends without a blank line; unexpected unindent. [docutils] vim +18 Documentation/misc-devices/zcopy.rst 15 16 17 Key features > 18 ----------- 19 - Supports zero-copy communication between intra-node processes. 20 - Handles both PTE-level small pages and PMD-level huge pages. 21 - Preserves the read/write permissions of the source page in the target address space. 22 23 24 Important constraints and requirements 25 --------------------- 26 1. Callers must ensure the source address is already mapped to physical pages, 27 while the destination address is unused (no existing mappings). If exists 28 old mappings, the return value is -EAGAIN. For this case, caller should free 29 the old dst_addr, and alloc a new one to try again. 30 31 2. No internal locking is implemented in the PageAttach interface; Callers 32 must manage memory mapping and release order to avoid race conditions. 33 34 3. Source and destination must be different processes (not threads of the same process). 35 36 4. Only user-space addresses are supported; kernel addresses cannot be mapped. 37 38 5. Both source and destination processes must remain alive during the mapping operation. 39 40 6. PUD-level huge pages are not supported in current implementation. 41 42 7. The start address and size of both source and destination must be PMD-size-aligned. 43 44 8. Callers are responsible for ensuring safe access to mapped pages after attachment, 45 as permissions are inherited from the source. 46 47 48 Use 49 --- 50 Process a 51 src_addr= aligned_alloc(ALIGN_SIZE_2M, size); 52 memset(src_addr, 0, size); 53 54 Process b 55 #define ALIGN_SIZE_2M 2097152 56 int fd = open(SLS_DEVICE, O_RDWR); 57 > 58 dst_addr= aligned_alloc(ALIGN_SIZE_2M, size); 59 res = zcopy(fd, (void *)src_addr, dst_addr, src_pid, dst_pid, size); 60 while(res.ret == -EAGAIN && retry--) { 61 free(dst_addr); 62 dst_addr= aligned_alloc(ALIGN_SIZE_2M, size); 63 res = zcopy(fd, (void *)src_addr, dst_addr, src_pid, dst_pid, aligned_size); > 64 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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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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