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[openeuler:openEuler-1.0-LTS 1605/1605] fs/btrfs/super.c:1643:10: warning: variable 'mode' set but not used
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 890108d01fde2c3b6dde4d169b695ce64362f135 commit: 93b9bcdf9fbcb683d4e8c44ee8cec0989053d4de [1605/1605] btrfs: remove unused parameter from btrfs_parse_subvol_options config: x86_64-buildonly-randconfig-2001-20250501 (https://download.01.org/0day-ci/archive/20250701/202507011948.EYIcVkOC-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250701/202507011948.EYIcVkOC-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/202507011948.EYIcVkOC-lkp@intel.com/ All warnings (new ones prefixed by >>): >> fs/btrfs/super.c:1643:10: warning: variable 'mode' set but not used [-Wunused-but-set-variable] 1643 | fmode_t mode = FMODE_READ; | ^ 1 warning generated. vim +/mode +1643 fs/btrfs/super.c 312c89fbca06896 Misono, Tomohiro 2017-12-14 1615 edf24abe51493cc Christoph Hellwig 2008-06-10 1616 /* 312c89fbca06896 Misono, Tomohiro 2017-12-14 1617 * Mount function which is called by VFS layer. edf24abe51493cc Christoph Hellwig 2008-06-10 1618 * 312c89fbca06896 Misono, Tomohiro 2017-12-14 1619 * In order to allow mounting a subvolume directly, btrfs uses mount_subtree() 312c89fbca06896 Misono, Tomohiro 2017-12-14 1620 * which needs vfsmount* of device's root (/). This means device's root has to 312c89fbca06896 Misono, Tomohiro 2017-12-14 1621 * be mounted internally in any case. 312c89fbca06896 Misono, Tomohiro 2017-12-14 1622 * 312c89fbca06896 Misono, Tomohiro 2017-12-14 1623 * Operation flow: 312c89fbca06896 Misono, Tomohiro 2017-12-14 1624 * 1. Parse subvol id related options for later use in mount_subvol(). 312c89fbca06896 Misono, Tomohiro 2017-12-14 1625 * 312c89fbca06896 Misono, Tomohiro 2017-12-14 1626 * 2. Mount device's root (/) by calling vfs_kern_mount(). 312c89fbca06896 Misono, Tomohiro 2017-12-14 1627 * 312c89fbca06896 Misono, Tomohiro 2017-12-14 1628 * NOTE: vfs_kern_mount() is used by VFS to call btrfs_mount() in the 312c89fbca06896 Misono, Tomohiro 2017-12-14 1629 * first place. In order to avoid calling btrfs_mount() again, we use 312c89fbca06896 Misono, Tomohiro 2017-12-14 1630 * different file_system_type which is not registered to VFS by 312c89fbca06896 Misono, Tomohiro 2017-12-14 1631 * register_filesystem() (btrfs_root_fs_type). As a result, 312c89fbca06896 Misono, Tomohiro 2017-12-14 1632 * btrfs_mount_root() is called. The return value will be used by 312c89fbca06896 Misono, Tomohiro 2017-12-14 1633 * mount_subtree() in mount_subvol(). 312c89fbca06896 Misono, Tomohiro 2017-12-14 1634 * 312c89fbca06896 Misono, Tomohiro 2017-12-14 1635 * 3. Call mount_subvol() to get the dentry of subvolume. Since there is 312c89fbca06896 Misono, Tomohiro 2017-12-14 1636 * "btrfs subvolume set-default", mount_subvol() is called always. edf24abe51493cc Christoph Hellwig 2008-06-10 1637 */ 061dbc6b9010bc1 Al Viro 2010-07-26 1638 static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, 306e16ce13c0f3d David Sterba 2011-04-19 1639 const char *device_name, void *data) 4b82d6e4a592016 Yan 2007-08-29 1640 { 312c89fbca06896 Misono, Tomohiro 2017-12-14 1641 struct vfsmount *mnt_root; 312c89fbca06896 Misono, Tomohiro 2017-12-14 1642 struct dentry *root; 97288f2c71e4696 Christoph Hellwig 2008-12-02 @1643 fmode_t mode = FMODE_READ; 73f73415caddbc0 Josef Bacik 2009-12-04 1644 char *subvol_name = NULL; 73f73415caddbc0 Josef Bacik 2009-12-04 1645 u64 subvol_objectid = 0; 4b82d6e4a592016 Yan 2007-08-29 1646 int error = 0; 4b82d6e4a592016 Yan 2007-08-29 1647 1751e8a6cb935e5 Linus Torvalds 2017-11-27 1648 if (!(flags & SB_RDONLY)) 97288f2c71e4696 Christoph Hellwig 2008-12-02 1649 mode |= FMODE_WRITE; 97288f2c71e4696 Christoph Hellwig 2008-12-02 1650 93b9bcdf9fbcb68 Gu Jinxiang 2018-07-09 1651 error = btrfs_parse_subvol_options(data, &subvol_name, 93b9bcdf9fbcb68 Gu Jinxiang 2018-07-09 1652 &subvol_objectid); f23c8af8ca2789e Ilya Dryomov 2011-11-08 1653 if (error) { f23c8af8ca2789e Ilya Dryomov 2011-11-08 1654 kfree(subvol_name); 061dbc6b9010bc1 Al Viro 2010-07-26 1655 return ERR_PTR(error); f23c8af8ca2789e Ilya Dryomov 2011-11-08 1656 } edf24abe51493cc Christoph Hellwig 2008-06-10 1657 312c89fbca06896 Misono, Tomohiro 2017-12-14 1658 /* mount device's root (/) */ 312c89fbca06896 Misono, Tomohiro 2017-12-14 1659 mnt_root = vfs_kern_mount(&btrfs_root_fs_type, flags, device_name, data); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1660 if (PTR_ERR_OR_ZERO(mnt_root) == -EBUSY) { 312c89fbca06896 Misono, Tomohiro 2017-12-14 1661 if (flags & SB_RDONLY) { 312c89fbca06896 Misono, Tomohiro 2017-12-14 1662 mnt_root = vfs_kern_mount(&btrfs_root_fs_type, 312c89fbca06896 Misono, Tomohiro 2017-12-14 1663 flags & ~SB_RDONLY, device_name, data); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1664 } else { 312c89fbca06896 Misono, Tomohiro 2017-12-14 1665 mnt_root = vfs_kern_mount(&btrfs_root_fs_type, 312c89fbca06896 Misono, Tomohiro 2017-12-14 1666 flags | SB_RDONLY, device_name, data); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1667 if (IS_ERR(mnt_root)) { 312c89fbca06896 Misono, Tomohiro 2017-12-14 1668 root = ERR_CAST(mnt_root); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1669 goto out; f667aef6af626d0 Qu Wenruo 2014-09-23 1670 } 04d21a244fdf79d Ilya Dryomov 2011-11-09 1671 312c89fbca06896 Misono, Tomohiro 2017-12-14 1672 down_write(&mnt_root->mnt_sb->s_umount); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1673 error = btrfs_remount(mnt_root->mnt_sb, &flags, NULL); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1674 up_write(&mnt_root->mnt_sb->s_umount); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1675 if (error < 0) { 312c89fbca06896 Misono, Tomohiro 2017-12-14 1676 root = ERR_PTR(error); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1677 mntput(mnt_root); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1678 goto out; 04d21a244fdf79d Ilya Dryomov 2011-11-09 1679 } 6c41761fc6efe15 David Sterba 2011-04-13 1680 } 830c4adbd04a79f Josef Bacik 2011-07-25 1681 } 312c89fbca06896 Misono, Tomohiro 2017-12-14 1682 if (IS_ERR(mnt_root)) { 312c89fbca06896 Misono, Tomohiro 2017-12-14 1683 root = ERR_CAST(mnt_root); 312c89fbca06896 Misono, Tomohiro 2017-12-14 1684 goto out; f667aef6af626d0 Qu Wenruo 2014-09-23 1685 } 4b82d6e4a592016 Yan 2007-08-29 1686 312c89fbca06896 Misono, Tomohiro 2017-12-14 1687 /* mount_subvol() will free subvol_name and mnt_root */ 5bedc48a8f9e1d6 David Sterba 2018-01-02 1688 root = mount_subvol(subvol_name, subvol_objectid, device_name, mnt_root); 4b82d6e4a592016 Yan 2007-08-29 1689 312c89fbca06896 Misono, Tomohiro 2017-12-14 1690 out: 312c89fbca06896 Misono, Tomohiro 2017-12-14 1691 return root; 4b82d6e4a592016 Yan 2007-08-29 1692 } 2e635a278354a1a Chris Mason 2007-03-21 1693 :::::: The code at line 1643 was first introduced by commit :::::: 97288f2c71e46965a2010baea10548fcb5f3af73 Btrfs: corret fmode_t annotations :::::: TO: Christoph Hellwig <hch(a)lst.de> :::::: CC: Chris Mason <chris.mason(a)oracle.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS] BUILD REGRESSION 890108d01fde2c3b6dde4d169b695ce64362f135
by kernel test robot 01 Jul '25

01 Jul '25

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: 890108d01fde2c3b6dde4d169b695ce64362f135 !16854 ftrace: Fix UAF when lookup kallsym after ftrace disabled Error/Warning (recently discovered and may have been fixed): https://lore.kernel.org/oe-kbuild-all/202506061449.nBm6oAvj-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202506061633.Zsp5yfyi-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202506061637.CVNqsEqf-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202506061755.yar1Fr9d-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202506071856.LxaA5NHF-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202506182031.ldH7VynO-lkp@intel.com /kbuild/src/headers/Makefile:626: include/config/auto.conf.cmd: No such file or directory kernel/sched/core.c:5989:29: error: 'root_task_group' undeclared (first use in this function); did you mean 'task_group'? mm/memcontrol.c:5000:6: warning: no previous prototype for function 'dhugetlb_pool_is_free' [-Wmissing-prototypes] mm/memory.c:4803:3: warning: cast from 'int (*)(unsigned long, unsigned long, struct cgp_args *)' to 'ktask_thread_func' (aka 'int (*)(void *, void *, void *)') converts to incompatible function type [-Wcast-function-type-mismatch] mm/memory_hotplug.c:970:13: warning: 'rollback_node_hotadd' defined but not used [-Wunused-function] mm/page_alloc.c:3123: warning: Function parameter or member 'mt' not described in '__putback_isolated_page' mm/vmalloc.c:231:16: warning: variable 'start' set but not used [-Wunused-but-set-variable] mm/vmalloc.c:231:23: warning: variable 'start' set but not used [-Wunused-but-set-variable] Unverified Error/Warning (likely false positive, kindly check if interested): mm/shmem.c: linux/share_pool.h is included more than once. mm/swap.c: linux/memremap.h is included more than once. Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allmodconfig | |-- include-asm-generic-bitops-non-atomic.h:error:array-subscript-long-unsigned-int-is-partly-outside-array-bounds-of-u32-aka-unsigned-int | |-- include-uapi-linux-sctp.h:error:alignment-of-struct-sctp_paddr_change-is-less-than | |-- include-uapi-linux-sctp.h:error:alignment-of-struct-sctp_paddrinfo-is-less-than | |-- include-uapi-linux-sctp.h:error:alignment-of-struct-sctp_paddrparams-is-less-than | |-- include-uapi-linux-sctp.h:error:alignment-of-struct-sctp_prim-is-less-than | |-- include-uapi-linux-sctp.h:error:alignment-of-struct-sctp_setpeerprim-is-less-than | |-- include-uapi-linux-sctp.h:error:spinfo_address-offset-in-struct-sctp_paddrinfo-isn-t-aligned-to | |-- include-uapi-linux-sctp.h:error:spp_address-offset-in-struct-sctp_paddrparams-isn-t-aligned-to | |-- include-uapi-linux-sctp.h:error:ssp_addr-offset-in-struct-sctp_prim-isn-t-aligned-to | |-- include-uapi-linux-sctp.h:error:sspp_addr-offset-in-struct-sctp_setpeerprim-isn-t-aligned-to | |-- mm-memory_hotplug.c:warning:rollback_node_hotadd-defined-but-not-used | |-- mm-memory_hotplug.c:warning:unused-variable-start_pfn | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- arm64-allnoconfig | |-- kernel-sched-core.c:error:root_task_group-undeclared-(first-use-in-this-function) | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- arm64-defconfig | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- arm64-randconfig-001-20250701 | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- arm64-randconfig-002-20250701 | |-- mm-memory_hotplug.c:warning:rollback_node_hotadd-defined-but-not-used | |-- mm-memory_hotplug.c:warning:unused-variable-start_pfn | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- arm64-randconfig-003-20250701 | |-- mm-memory_hotplug.c:warning:rollback_node_hotadd-defined-but-not-used | |-- mm-memory_hotplug.c:warning:unused-variable-start_pfn | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- x86_64-allnoconfig | |-- Makefile:include-config-auto.conf.cmd:No-such-file-or-directory | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | |-- mm-shmem.c:linux-share_pool.h-is-included-more-than-once. | |-- mm-swap.c:linux-memremap.h-is-included-more-than-once. | |-- mm-vmalloc.c:warning:variable-start-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-allyesconfig | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-memory_hotplug.c:warning:unused-variable-start_pfn | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- x86_64-buildonly-randconfig-005-20250701 | |-- kernel-hung_task.c:error:use-of-undeclared-identifier-sysctl_hung_task_all_cpu_backtrace | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-memory_hotplug.c:warning:unused-variable-start_pfn | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- x86_64-buildonly-randconfig-006-20250701 | |-- mm-memory_hotplug.c:warning:unused-variable-start_pfn | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- x86_64-defconfig | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | `-- mm-vmalloc.c:warning:variable-start-set-but-not-used |-- x86_64-randconfig-161-20250701 | |-- kernel-hung_task.c:error:use-of-undeclared-identifier-sysctl_hung_task_all_cpu_backtrace | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memcontrol.c:warning:no-previous-prototype-for-function-dhugetlb_pool_is_free | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page | |-- mm-vmalloc.c:warning:variable-start-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration `-- x86_64-rhel-9.4-rust |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool |-- mm-memcontrol.c:warning:no-previous-prototype-for-function-dhugetlb_pool_is_free |-- mm-memory_hotplug.c:warning:unused-variable-start_pfn |-- mm-page_alloc.c:warning:Function-parameter-or-member-mt-not-described-in-__putback_isolated_page `-- mm-vmalloc.c:warning:variable-start-set-but-not-used elapsed time: 737m configs tested: 17 configs skipped: 129 tested configs: arm64 allmodconfig gcc-15.1.0 arm64 allnoconfig gcc-15.1.0 arm64 defconfig gcc-15.1.0 arm64 randconfig-001-20250701 gcc-15.1.0 arm64 randconfig-002-20250701 gcc-15.1.0 arm64 randconfig-003-20250701 gcc-12.3.0 arm64 randconfig-004-20250701 gcc-5.5.0 x86_64 allnoconfig clang-20 x86_64 allyesconfig clang-20 x86_64 buildonly-randconfig-001-20250701 gcc-12 x86_64 buildonly-randconfig-002-20250701 gcc-12 x86_64 buildonly-randconfig-003-20250701 gcc-12 x86_64 buildonly-randconfig-004-20250701 gcc-12 x86_64 buildonly-randconfig-005-20250701 clang-20 x86_64 buildonly-randconfig-006-20250701 clang-20 x86_64 defconfig gcc-11 x86_64 rhel-9.4-rust clang-18 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 2882/2882] kernel/crash_core.c:380:13: warning: no previous prototype for function 'reserve_crashkernel_high'
by kernel test robot 01 Jul '25

01 Jul '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: c90dc8f5217147c6c3cfb99d952cfdcaf7e194e1 commit: baac34dd89ca15da7d7f0736fd0e69e13f315ae9 [2882/2882] arm64: kdump: Use page-level mapping for the high memory of crashkernel config: x86_64-randconfig-2002-20250501 (https://download.01.org/0day-ci/archive/20250701/202507011754.bARO1PJL-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250701/202507011754.bARO1PJL-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/202507011754.bARO1PJL-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/crash_core.c:380:13: warning: no previous prototype for function 'reserve_crashkernel_high' [-Wmissing-prototypes] 380 | void __init reserve_crashkernel_high(void) | ^ kernel/crash_core.c:380:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 380 | void __init reserve_crashkernel_high(void) | ^ | static 1 warning generated. vim +/reserve_crashkernel_high +380 kernel/crash_core.c 379 > 380 void __init reserve_crashkernel_high(void) 381 { 382 unsigned long long crash_base, crash_size; 383 char *cmdline = boot_command_line; 384 int ret; 385 386 if (!IS_ENABLED(CONFIG_KEXEC_CORE)) 387 return; 388 389 /* crashkernel=X[@offset] */ 390 ret = parse_crashkernel(cmdline, memblock_phys_mem_size(), 391 &crash_size, &crash_base); 392 if (ret || !crash_size) { 393 ret = parse_crashkernel_high(cmdline, 0, &crash_size, &crash_base); 394 if (ret || !crash_size) 395 return; 396 } 397 398 crash_size = PAGE_ALIGN(crash_size); 399 400 /* 401 * For the case crashkernel=X, may fall back to reserve memory above 402 * 4G, make reservations here in advance. It will be released later if 403 * the region is successfully reserved under 4G. 404 */ 405 if (!crash_base) { 406 crash_base = memblock_phys_alloc_range(crash_size, CRASH_ALIGN, 407 crash_base, CRASH_ADDR_HIGH_MAX); 408 if (!crash_base) 409 return; 410 411 crash_high_mem_reserved = true; 412 } 413 414 /* Mark the memory range that requires page-level mappings */ 415 crashk_res.start = crash_base; 416 crashk_res.end = crash_base + crash_size - 1; 417 } 418 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-5.10] bpf: fix potential 32-bit overflow when accessing ARRAY map element
by Pu Lehui 01 Jul '25

01 Jul '25

From: Andrii Nakryiko <andrii(a)kernel.org> mainline inclusion from mainline-v6.0-rc1 commit 87ac0d600943994444e24382a87aa19acc4cd3d4 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICGA1J CVE: CVE-2022-50167 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- If BPF array map is bigger than 4GB, element pointer calculation can overflow because both index and elem_size are u32. Fix this everywhere by forcing 64-bit multiplication. Extract this formula into separate small helper and use it consistently in various places. Speculative-preventing formula utilizing index_mask trick is left as is, but explicit u64 casts are added in both places. Fixes: c85d69135a91 ("bpf: move memory size checks to bpf_map_charge_init()") Signed-off-by: Andrii Nakryiko <andrii(a)kernel.org> Link: https://lore.kernel.org/r/20220715053146.1291891-2-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Conflicts: kernel/bpf/arraymap.c [The conflicts were due to not merge bpf timer and bpf_for_each_map_elem features] Signed-off-by: Pu Lehui <pulehui(a)huawei.com> --- kernel/bpf/arraymap.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c index dfabf842f830..779297cad45b 100644 --- a/kernel/bpf/arraymap.c +++ b/kernel/bpf/arraymap.c @@ -171,6 +171,11 @@ static struct bpf_map *array_map_alloc(union bpf_attr *attr) return &array->map; } +static void *array_map_elem_ptr(struct bpf_array *array, u32 index) +{ + return array->value + (u64)array->elem_size * index; +} + /* Called from syscall or from eBPF program */ static void *array_map_lookup_elem(struct bpf_map *map, void *key) { @@ -180,7 +185,7 @@ static void *array_map_lookup_elem(struct bpf_map *map, void *key) if (unlikely(index >= array->map.max_entries)) return NULL; - return array->value + array->elem_size * (index & array->index_mask); + return array->value + (u64)array->elem_size * (index & array->index_mask); } static int array_map_direct_value_addr(const struct bpf_map *map, u64 *imm, @@ -332,7 +337,7 @@ static int array_map_update_elem(struct bpf_map *map, void *key, void *value, value, map->value_size); } else { val = array->value + - array->elem_size * (index & array->index_mask); + (u64)array->elem_size * (index & array->index_mask); if (map_flags & BPF_F_LOCK) copy_map_value_locked(map, val, value, false); else @@ -527,7 +532,7 @@ static void *bpf_array_map_seq_start(struct seq_file *seq, loff_t *pos) index = info->index & array->index_mask; if (info->percpu_value_buf) return array->pptrs[index]; - return array->value + array->elem_size * index; + return array_map_elem_ptr(array, index); } static void *bpf_array_map_seq_next(struct seq_file *seq, void *v, loff_t *pos) @@ -546,7 +551,7 @@ static void *bpf_array_map_seq_next(struct seq_file *seq, void *v, loff_t *pos) index = info->index & array->index_mask; if (info->percpu_value_buf) return array->pptrs[index]; - return array->value + array->elem_size * index; + return array_map_elem_ptr(array, index); } static int __bpf_array_map_seq_show(struct seq_file *seq, void *v) -- 2.34.1

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[PATCH OLK-5.10 v4 00/13] HiSock Redirect Framework
by Pu Lehui 01 Jul '25

01 Jul '25

HiSock Redirect Framework, which bypasses net filter rules for specific connections selected by bpf prog on both TX and RX directions. Julien Thierry (1): arm64: insn: Add some opcodes to instruction decoder Pu Lehui (11): bpf: Add CONFIG_HISOCK bpf: Add XDP_HISOCK_REDIRECT action bpf: Add BPF_PROG_TYPE_HISOCK prog type bpf: Add HISOCK_EGRESS hook on network egress path bpf: Add bpf_get_ingress_dst helper bpf: Add hisock_xdp_buff wrapper for xdp_buff bpf: Add bpf_set_ingress_dst helper bpf: Add bpf_change_skb_dev helper bpf: Add bpf_ext_memcpy helper openeuler_defconfig: Enable CONFIG_HISOCK samples/bpf: Add HiSock Redirect Framework sample Xu Kuohai (1): bpf, arm64: Fixup bpf_ext_memcpy extension helper arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/include/asm/insn.h | 13 + arch/arm64/kernel/insn.c | 8 + arch/arm64/net/bpf_jit.h | 15 + arch/arm64/net/bpf_jit_comp.c | 266 ++++++++++++++++ arch/x86/configs/openeuler_defconfig | 1 + include/linux/bpf-cgroup.h | 35 +++ include/linux/bpf_types.h | 4 + include/linux/filter.h | 3 + include/net/xdp.h | 5 + include/uapi/linux/bpf.h | 45 +++ kernel/bpf/cgroup.c | 43 +++ kernel/bpf/core.c | 7 + kernel/bpf/helpers.c | 27 ++ kernel/bpf/syscall.c | 19 ++ kernel/bpf/verifier.c | 28 ++ net/Kconfig | 10 + net/core/dev.c | 77 ++++- net/core/filter.c | 184 +++++++++++ net/ipv4/ip_output.c | 66 ++++ samples/bpf/.gitignore | 1 + samples/bpf/Makefile | 3 + samples/bpf/hisock/bpf.c | 246 +++++++++++++++ samples/bpf/hisock/hisock_cmd.c | 405 +++++++++++++++++++++++++ tools/bpf/bpftool/common.c | 1 + tools/bpf/bpftool/prog.c | 1 + tools/include/uapi/linux/bpf.h | 45 +++ tools/lib/bpf/libbpf.c | 2 + 28 files changed, 1558 insertions(+), 3 deletions(-) create mode 100644 samples/bpf/hisock/bpf.c create mode 100644 samples/bpf/hisock/hisock_cmd.c -- 2.34.1

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[PATCH OLK-5.10 0/2] fs: Backport two namespace fix patches
by Wang Zhaolong 01 Jul '25

01 Jul '25

Al Viro (2): do_change_type(): refuse to operate on unmounted/not ours mounts clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN in the right userns fs/namespace.c | 9 +++++++++ 1 file changed, 9 insertions(+) -- 2.34.3

2 3

[PATCH OLK-6.6 0/4] fs: Backport four namespace fix patches
by Wang Zhaolong 01 Jul '25

01 Jul '25

Al Viro (4): path_overmount(): avoid false negatives fix propagation graph breakage by MOVE_MOUNT_SET_GROUP move_mount(2) do_change_type(): refuse to operate on unmounted/not ours mounts clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN in the right userns fs/namespace.c | 30 +++++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-) -- 2.34.3

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[openeuler:openEuler-1.0-LTS 1605/1605] fs/btrfs/inode.c:6717:6: warning: variable 'drop_on_err' set but not used
by kernel test robot 01 Jul '25

01 Jul '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 890108d01fde2c3b6dde4d169b695ce64362f135 commit: 32955c5422a8a5460bbefe2a6fc51eadcafff4c9 [1605/1605] btrfs: switch to discard_new_inode() config: x86_64-buildonly-randconfig-2001-20250501 (https://download.01.org/0day-ci/archive/20250701/202507011545.DJDFFl5d-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250701/202507011545.DJDFFl5d-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/202507011545.DJDFFl5d-lkp@intel.com/ All warnings (new ones prefixed by >>): fs/btrfs/inode.c:2776:16: warning: variable 'inode' set but not used [-Wunused-but-set-variable] 2776 | struct inode *inode; | ^ fs/btrfs/inode.c:6474:7: warning: variable 'err' set but not used [-Wunused-but-set-variable] 6474 | int err; | ^ fs/btrfs/inode.c:6481:7: warning: variable 'err' set but not used [-Wunused-but-set-variable] 6481 | int err; | ^ >> fs/btrfs/inode.c:6717:6: warning: variable 'drop_on_err' set but not used [-Wunused-but-set-variable] 6717 | int drop_on_err = 0; | ^ 4 warnings generated. vim +/drop_on_err +6717 fs/btrfs/inode.c 39279cc3d2704c Chris Mason 2007-06-12 6709 18bb1db3e7607e Al Viro 2011-07-26 6710 static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 39279cc3d2704c Chris Mason 2007-06-12 6711 { 2ff7e61e0d30ff Jeff Mahoney 2016-06-22 6712 struct btrfs_fs_info *fs_info = btrfs_sb(dir->i_sb); b9d86667c94e5f Chris Mason 2008-05-02 6713 struct inode *inode = NULL; 39279cc3d2704c Chris Mason 2007-06-12 6714 struct btrfs_trans_handle *trans; 39279cc3d2704c Chris Mason 2007-06-12 6715 struct btrfs_root *root = BTRFS_I(dir)->root; 39279cc3d2704c Chris Mason 2007-06-12 6716 int err = 0; 39279cc3d2704c Chris Mason 2007-06-12 @6717 int drop_on_err = 0; b9d86667c94e5f Chris Mason 2008-05-02 6718 u64 objectid = 0; 00e4e6b33a0f78 Chris Mason 2008-08-05 6719 u64 index = 0; 39279cc3d2704c Chris Mason 2007-06-12 6720 9ed74f2dba6ebf Josef Bacik 2009-09-11 6721 /* 9ed74f2dba6ebf Josef Bacik 2009-09-11 6722 * 2 items for inode and ref 9ed74f2dba6ebf Josef Bacik 2009-09-11 6723 * 2 items for dir items 9ed74f2dba6ebf Josef Bacik 2009-09-11 6724 * 1 for xattr if selinux is on 9ed74f2dba6ebf Josef Bacik 2009-09-11 6725 */ a22285a6a32390 Yan, Zheng 2010-05-16 6726 trans = btrfs_start_transaction(root, 5); a22285a6a32390 Yan, Zheng 2010-05-16 6727 if (IS_ERR(trans)) a22285a6a32390 Yan, Zheng 2010-05-16 6728 return PTR_ERR(trans); 39279cc3d2704c Chris Mason 2007-06-12 6729 581bb050941b4f Li Zefan 2011-04-20 6730 err = btrfs_find_free_ino(root, &objectid); 581bb050941b4f Li Zefan 2011-04-20 6731 if (err) 581bb050941b4f Li Zefan 2011-04-20 6732 goto out_fail; 581bb050941b4f Li Zefan 2011-04-20 6733 aec7477b3b0e8e Josef Bacik 2008-07-24 6734 inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name, 4a0cc7ca6c40b6 Nikolay Borisov 2017-01-10 6735 dentry->d_name.len, btrfs_ino(BTRFS_I(dir)), objectid, d82a6f1d7e8b61 Josef Bacik 2011-05-11 6736 S_IFDIR | mode, &index); 39279cc3d2704c Chris Mason 2007-06-12 6737 if (IS_ERR(inode)) { 39279cc3d2704c Chris Mason 2007-06-12 6738 err = PTR_ERR(inode); 32955c5422a8a5 Al Viro 2018-05-16 6739 inode = NULL; 39279cc3d2704c Chris Mason 2007-06-12 6740 goto out_fail; 39279cc3d2704c Chris Mason 2007-06-12 6741 } 5f39d397dfbe14 Chris Mason 2007-10-15 6742 39279cc3d2704c Chris Mason 2007-06-12 6743 drop_on_err = 1; b0d5d10f41a0f1 Chris Mason 2014-09-08 6744 /* these must be set before we unlock the inode */ b0d5d10f41a0f1 Chris Mason 2014-09-08 6745 inode->i_op = &btrfs_dir_inode_operations; b0d5d10f41a0f1 Chris Mason 2014-09-08 6746 inode->i_fop = &btrfs_dir_file_operations; 33268eaf0b3db5 Josef Bacik 2008-07-24 6747 2a7dba391e5628 Eric Paris 2011-02-01 6748 err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); 33268eaf0b3db5 Josef Bacik 2008-07-24 6749 if (err) 32955c5422a8a5 Al Viro 2018-05-16 6750 goto out_fail; 39279cc3d2704c Chris Mason 2007-06-12 6751 6ef06d27903d9c Nikolay Borisov 2017-02-20 6752 btrfs_i_size_write(BTRFS_I(inode), 0); 39279cc3d2704c Chris Mason 2007-06-12 6753 err = btrfs_update_inode(trans, root, inode); 39279cc3d2704c Chris Mason 2007-06-12 6754 if (err) 32955c5422a8a5 Al Viro 2018-05-16 6755 goto out_fail; 5f39d397dfbe14 Chris Mason 2007-10-15 6756 db0a669fb00241 Nikolay Borisov 2017-02-20 6757 err = btrfs_add_link(trans, BTRFS_I(dir), BTRFS_I(inode), db0a669fb00241 Nikolay Borisov 2017-02-20 6758 dentry->d_name.name, e02119d5a7b439 Chris Mason 2008-09-05 6759 dentry->d_name.len, 0, index); 39279cc3d2704c Chris Mason 2007-06-12 6760 if (err) 32955c5422a8a5 Al Viro 2018-05-16 6761 goto out_fail; 5f39d397dfbe14 Chris Mason 2007-10-15 6762 1e2e547a93a00e Al Viro 2018-05-04 6763 d_instantiate_new(dentry, inode); 39279cc3d2704c Chris Mason 2007-06-12 6764 drop_on_err = 0; 39279cc3d2704c Chris Mason 2007-06-12 6765 39279cc3d2704c Chris Mason 2007-06-12 6766 out_fail: 3a45bb207ee2c5 Jeff Mahoney 2016-09-09 6767 btrfs_end_transaction(trans); 32955c5422a8a5 Al Viro 2018-05-16 6768 if (err && inode) { c7cfb8a5405a34 Wang Shilong 2014-12-24 6769 inode_dec_link_count(inode); 32955c5422a8a5 Al Viro 2018-05-16 6770 discard_new_inode(inode); c7cfb8a5405a34 Wang Shilong 2014-12-24 6771 } 2ff7e61e0d30ff Jeff Mahoney 2016-06-22 6772 btrfs_btree_balance_dirty(fs_info); 39279cc3d2704c Chris Mason 2007-06-12 6773 return err; 39279cc3d2704c Chris Mason 2007-06-12 6774 } 39279cc3d2704c Chris Mason 2007-06-12 6775 :::::: The code at line 6717 was first introduced by commit :::::: 39279cc3d2704cfbf9c35dcb5bdd392159ae4625 Btrfs: split up super.c :::::: TO: Chris Mason <chris.mason(a)oracle.com> :::::: CC: David Woodhouse <dwmw2(a)hera.kernel.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH openEuler-25.03 00/18] XSCHED FOR XPU
by Liu Kai 01 Jul '25

01 Jul '25

XSCHD FOR XPU Alekseev Dmitry (2): xsched: Add XCU control group implementation and its backend in xsched CFS xsched: Add support for CFS quota for cgroups Dmitriy Alekseev (2): xsched/core: Add xcu_wait() implementation xsched/core: refactor xcu->xrq.nr_running Konstantin Meskhidze (14): xsched: Add base vstream support xcu: Add base NPU driver support xsched: Add debug prints in XSched mechanism xsched: Add XCU initialization support xsched: Add vstream_alloc() implementation xsched: Add vstream_free() implementation xsched: Add vstream_kick() implementation xsched: Add xsched_ctx_init_xse() implementation xsched: Add XCU xsched_schedule() implementation xsched: Add xsched RT class xsched: Add RT class callbacks implementation and support xsched: Add xsched_submit() implementation xsched: Add xsched CFS class basic framework xsched: Add cfs class callbacks implementation arch/x86/entry/syscalls/syscall_64.tbl | 2 +- drivers/Makefile | 1 + drivers/xcu/Makefile | 2 + drivers/xcu/xcu_group.c | 284 ++++++++ include/linux/cgroup_subsys.h | 4 + include/linux/syscalls.h | 3 + include/linux/vstream.h | 81 +++ include/linux/xcu_group.h | 123 ++++ include/linux/xsched.h | 650 ++++++++++++++++++ include/uapi/asm-generic/unistd.h | 4 +- include/uapi/linux/xcu_vstream.h | 57 ++ init/Kconfig | 1 + kernel/Makefile | 1 + kernel/cgroup/cgroup.c | 2 +- kernel/xsched/Kconfig | 62 ++ kernel/xsched/Makefile | 4 + kernel/xsched/cfs.c | 236 +++++++ kernel/xsched/cfs_quota.c | 96 +++ kernel/xsched/cgroup.c | 654 ++++++++++++++++++ kernel/xsched/core.c | 880 +++++++++++++++++++++++++ kernel/xsched/rt.c | 242 +++++++ kernel/xsched/vstream.c | 570 ++++++++++++++++ 22 files changed, 3955 insertions(+), 4 deletions(-) create mode 100644 drivers/xcu/Makefile create mode 100644 drivers/xcu/xcu_group.c create mode 100644 include/linux/vstream.h create mode 100644 include/linux/xcu_group.h create mode 100644 include/linux/xsched.h create mode 100644 include/uapi/linux/xcu_vstream.h create mode 100644 kernel/xsched/Kconfig create mode 100644 kernel/xsched/Makefile create mode 100644 kernel/xsched/cfs.c create mode 100644 kernel/xsched/cfs_quota.c create mode 100644 kernel/xsched/cgroup.c create mode 100644 kernel/xsched/core.c create mode 100644 kernel/xsched/rt.c create mode 100644 kernel/xsched/vstream.c -- 2.34.1

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[openeuler:OLK-5.10 2882/2882] arch/x86/lib/copy_highpages.c:20:5: warning: no previous prototype for function 'sysctl_hugepage_nocache_copy'
by kernel test robot 01 Jul '25

01 Jul '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: c90dc8f5217147c6c3cfb99d952cfdcaf7e194e1 commit: 50d5bf1b6da9f74bf93f9dec601c09d45d6d8406 [2882/2882] x86: hugepage: use nt copy hugepage to AEP in x86 config: x86_64-randconfig-2002-20250501 (https://download.01.org/0day-ci/archive/20250701/202507011441.j7rBaRlC-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250701/202507011441.j7rBaRlC-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/202507011441.j7rBaRlC-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/lib/copy_highpages.c:20:5: warning: no previous prototype for function 'sysctl_hugepage_nocache_copy' [-Wmissing-prototypes] 20 | int sysctl_hugepage_nocache_copy(struct ctl_table *table, int write, | ^ arch/x86/lib/copy_highpages.c:20:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 20 | int sysctl_hugepage_nocache_copy(struct ctl_table *table, int write, | ^ | static 1 warning generated. vim +/sysctl_hugepage_nocache_copy +20 arch/x86/lib/copy_highpages.c 19 > 20 int sysctl_hugepage_nocache_copy(struct ctl_table *table, int write, 21 void __user *buffer, size_t *lenp, loff_t *ppos) 22 { 23 struct ctl_table t; 24 int err; 25 int state; 26 27 if (write && !capable(CAP_SYS_ADMIN)) 28 return -EPERM; 29 30 state = static_branch_unlikely(&hugepage_nocache_copy); 31 t = *table; 32 t.data = &state; 33 err = proc_dointvec_minmax(&t, write, buffer, lenp, ppos); 34 if (err < 0) 35 return err; 36 if (write) 37 set_hugepage_nocache_copy(state); 38 return err; 39 } 40 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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