August 2024 - Kernel - mailweb.openeuler.org

[openeuler:openEuler-1.0-LTS 18174/23490] mm/vmalloc.o: warning: objtool: vmap_pages_range_noflush()+0x51e: unreachable instruction
by kernel test robot 14 Aug '24

14 Aug '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: ffc1b506e4066379411520003b9c59e509b05252 commit: 562117a9ad867364248d8bde9c05962e3f97a751 [18174/23490] mm/vmalloc: Hugepage vmalloc mappings config: x86_64-buildonly-randconfig-001-20240812 (https://download.01.org/0day-ci/archive/20240814/202408140906.DDO6C5al-lkp@…) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240814/202408140906.DDO6C5al-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/202408140906.DDO6C5al-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from mm/vmalloc.c:42: In file included from mm/internal.h:16: include/linux/pagemap.h:425:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict] 425 | filler_t *filler = (filler_t *)mapping->a_ops->readpage; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/vmalloc.c:230:16: warning: variable 'start' set but not used [-Wunused-but-set-variable] 230 | unsigned long start; | ^ 2 warnings generated. mm/vmalloc.c:3278: warning: Function parameter or member 'align' not described in 'pvm_determine_end_from_reverse' >> mm/vmalloc.o: warning: objtool: vmap_pages_range_noflush()+0x51e: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6] BUILD REGRESSION 5a99607769d0ce08b673edf85e1a8127ce87f816
by kernel test robot 14 Aug '24

14 Aug '24

tree/branch: https://gitee.com/openeuler/kernel.git OLK-6.6 branch HEAD: 5a99607769d0ce08b673edf85e1a8127ce87f816 !10899 selftests/bpf: Add netlink helper library Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allmodconfig | |-- arch-arm64-kvm-arm.c:warning:variable-r-is-used-uninitialized-whenever-if-condition-is-false | |-- arch-arm64-kvm-tmi.c:warning:no-previous-prototype-for-function-tmi_tmm_inf_test | |-- arch-arm64-kvm-virtcca_cvm.c:warning:no-previous-prototype-for-function-kvm_cvm_create_ttt_levels | |-- arch-arm64-kvm-virtcca_cvm.c:warning:no-previous-prototype-for-function-kvm_cvm_get_num_brps | |-- arch-arm64-kvm-virtcca_cvm.c:warning:no-previous-prototype-for-function-kvm_cvm_get_num_wrps | |-- arch-arm64-kvm-virtcca_cvm.c:warning:no-previous-prototype-for-function-kvm_cvm_ipa_limit | |-- arch-arm64-kvm-virtcca_cvm.c:warning:no-previous-prototype-for-function-kvm_cvm_populate_par_region | |-- arch-arm64-kvm-virtcca_cvm.c:warning:no-previous-prototype-for-function-kvm_cvm_supports_pmu | `-- arch-arm64-kvm-virtcca_cvm.c:warning:no-previous-prototype-for-function-kvm_cvm_supports_sve |-- x86_64-buildonly-randconfig-001-20240813 | `-- kernel-sched-isolation.c:error:use-of-undeclared-identifier-setup_max_cpus `-- x86_64-buildonly-randconfig-006-20240813 `-- kernel-sched-isolation.c:error:setup_max_cpus-undeclared-(first-use-in-this-function) elapsed time: 728m configs tested: 38 configs skipped: 107 tested configs: arm64 allmodconfig clang-20 arm64 allnoconfig gcc-14.1.0 arm64 randconfig-001-20240813 gcc-14.1.0 arm64 randconfig-002-20240813 gcc-14.1.0 arm64 randconfig-003-20240813 clang-20 arm64 randconfig-004-20240813 gcc-14.1.0 loongarch allmodconfig gcc-14.1.0 loongarch allnoconfig gcc-14.1.0 loongarch randconfig-001-20240813 gcc-14.1.0 loongarch randconfig-002-20240813 gcc-14.1.0 x86_64 allnoconfig clang-18 x86_64 allyesconfig clang-18 x86_64 buildonly-randconfig-001-20240813 clang-18 x86_64 buildonly-randconfig-002-20240813 gcc-11 x86_64 buildonly-randconfig-003-20240813 clang-18 x86_64 buildonly-randconfig-004-20240813 gcc-12 x86_64 buildonly-randconfig-005-20240813 gcc-12 x86_64 buildonly-randconfig-006-20240813 gcc-12 x86_64 defconfig gcc-11 x86_64 randconfig-001-20240813 gcc-12 x86_64 randconfig-002-20240813 clang-18 x86_64 randconfig-003-20240813 gcc-12 x86_64 randconfig-004-20240813 gcc-12 x86_64 randconfig-005-20240813 gcc-12 x86_64 randconfig-006-20240813 clang-18 x86_64 randconfig-011-20240813 gcc-12 x86_64 randconfig-012-20240813 gcc-12 x86_64 randconfig-013-20240813 gcc-12 x86_64 randconfig-014-20240813 gcc-11 x86_64 randconfig-015-20240813 gcc-11 x86_64 randconfig-016-20240813 gcc-12 x86_64 randconfig-071-20240813 clang-18 x86_64 randconfig-072-20240813 clang-18 x86_64 randconfig-073-20240813 gcc-11 x86_64 randconfig-074-20240813 gcc-12 x86_64 randconfig-075-20240813 gcc-12 x86_64 randconfig-076-20240813 clang-18 x86_64 rhel-8.3-rust clang-18 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 18043/23490] mm/page_alloc.o: warning: objtool: __putback_isolated_page()+0x3c4: unreachable instruction
by kernel test robot 14 Aug '24

14 Aug '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: ffc1b506e4066379411520003b9c59e509b05252 commit: 91bac2310ae7eca9d9869222c96fcc3d02851eea [18043/23490] mm: add function __putback_isolated_page config: x86_64-buildonly-randconfig-001-20240812 (https://download.01.org/0day-ci/archive/20240814/202408140708.dRZedKqV-lkp@…) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240814/202408140708.dRZedKqV-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/202408140708.dRZedKqV-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from mm/page_alloc.c:21: include/linux/pagemap.h:425:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict] 425 | filler_t *filler = (filler_t *)mapping->a_ops->readpage; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/page_alloc.c:2304:5: warning: no previous prototype for function 'find_suitable_fallback' [-Wmissing-prototypes] 2304 | int find_suitable_fallback(struct free_area *area, unsigned int order, | ^ mm/page_alloc.c:2304:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2304 | int find_suitable_fallback(struct free_area *area, unsigned int order, | ^ | static 2 warnings generated. mm/page_alloc.c:3005: warning: Function parameter or member 'mt' not described in '__putback_isolated_page' >> mm/page_alloc.o: warning: objtool: __putback_isolated_page()+0x3c4: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 17746/23490] drivers/dax/bus.o: warning: objtool: __dax_driver_register()+0xb7: unreachable instruction
by kernel test robot 14 Aug '24

14 Aug '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: ffc1b506e4066379411520003b9c59e509b05252 commit: 9bb67bd58e6a7e3ef00793b4966be7bb0a346830 [17746/23490] Intel: device-dax: Add support for a dax override driver config: x86_64-buildonly-randconfig-001-20240812 (https://download.01.org/0day-ci/archive/20240814/202408140445.JxTfcbDB-lkp@…) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240814/202408140445.JxTfcbDB-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/202408140445.JxTfcbDB-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/dax/bus.o: warning: objtool: __dax_driver_register()+0xb7: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS] BUILD REGRESSION ffc1b506e4066379411520003b9c59e509b05252
by kernel test robot 14 Aug '24

14 Aug '24

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: ffc1b506e4066379411520003b9c59e509b05252 !10858 v4 powerpc/pseries: Whitelist dtl slub object for copying to userspace Error/Warning reports: https://lore.kernel.org/oe-kbuild-all/202408132002.WTqihNUY-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202408132328.mUpBPGqi-lkp@intel.com https://lore.kernel.org/oe-kbuild-all/202408140248.c4tdhQh1-lkp@intel.com Error/Warning ids grouped by kconfigs: recent_errors |-- x86_64-buildonly-randconfig-001-20240812 | |-- fs-io-wq.o:warning:objtool:io_wq_create:unreachable-instruction | |-- fs-pipe.o:warning:objtool:generic_pipe_buf_get:unreachable-instruction | `-- kernel-sched-fair.o:warning:objtool:propagate_entity_cfs_rq:unreachable-instruction `-- x86_64-randconfig-075-20240813 `-- multiple-definition-of-debug-arch-x86-entry-entry_64.o:arch-x86-entry-entry_64.S:first-defined-here elapsed time: 722m configs tested: 34 configs skipped: 111 tested configs: arm64 allmodconfig gcc-14.1.0 arm64 allnoconfig gcc-14.1.0 arm64 randconfig-001-20240813 gcc-14.1.0 arm64 randconfig-002-20240813 gcc-14.1.0 arm64 randconfig-003-20240813 gcc-14.1.0 arm64 randconfig-004-20240813 gcc-14.1.0 x86_64 allnoconfig clang-18 x86_64 allyesconfig clang-18 x86_64 buildonly-randconfig-001-20240813 clang-18 x86_64 buildonly-randconfig-002-20240813 gcc-11 x86_64 buildonly-randconfig-003-20240813 clang-18 x86_64 buildonly-randconfig-004-20240813 gcc-12 x86_64 buildonly-randconfig-005-20240813 gcc-12 x86_64 buildonly-randconfig-006-20240813 gcc-12 x86_64 defconfig gcc-11 x86_64 randconfig-001-20240813 gcc-12 x86_64 randconfig-002-20240813 clang-18 x86_64 randconfig-003-20240813 gcc-12 x86_64 randconfig-004-20240813 gcc-12 x86_64 randconfig-005-20240813 gcc-12 x86_64 randconfig-006-20240813 clang-18 x86_64 randconfig-011-20240813 gcc-12 x86_64 randconfig-012-20240813 gcc-12 x86_64 randconfig-013-20240813 gcc-12 x86_64 randconfig-014-20240813 gcc-11 x86_64 randconfig-015-20240813 gcc-11 x86_64 randconfig-016-20240813 gcc-12 x86_64 randconfig-071-20240813 clang-18 x86_64 randconfig-072-20240813 clang-18 x86_64 randconfig-073-20240813 gcc-11 x86_64 randconfig-074-20240813 gcc-12 x86_64 randconfig-075-20240813 gcc-12 x86_64 randconfig-076-20240813 clang-18 x86_64 rhel-8.3-rust clang-18 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 17019/23490] kernel/sched/fair.o: warning: objtool: propagate_entity_cfs_rq()+0x35b: unreachable instruction
by kernel test robot 14 Aug '24

14 Aug '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: ffc1b506e4066379411520003b9c59e509b05252 commit: 909ad0a4afdeff3577ce657881b7668cc8de1c72 [17019/23490] sched/fair: Fix unfairness caused by missing load decay config: x86_64-buildonly-randconfig-001-20240812 (https://download.01.org/0day-ci/archive/20240814/202408140248.c4tdhQh1-lkp@…) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240814/202408140248.c4tdhQh1-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/202408140248.c4tdhQh1-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from kernel/sched/fair.c:23: In file included from kernel/sched/sched.h:52: In file included from include/linux/migrate.h:6: In file included from include/linux/mempolicy.h:16: include/linux/pagemap.h:425:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict] 425 | filler_t *filler = (filler_t *)mapping->a_ops->readpage; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:6878:16: warning: variable 'time' set but not used [-Wunused-but-set-variable] 6878 | unsigned long time; | ^ 2 warnings generated. >> kernel/sched/fair.o: warning: objtool: propagate_entity_cfs_rq()+0x35b: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 16132/23490] fs/io-wq.o: warning: objtool: io_wq_create()+0x221: unreachable instruction
by kernel test robot 13 Aug '24

13 Aug '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: ffc1b506e4066379411520003b9c59e509b05252 commit: 3cad26766f962aaea098fe3b51863a44878af8d8 [16132/23490] io_uring/io-wq: forward submission ref to async config: x86_64-buildonly-randconfig-001-20240812 (https://download.01.org/0day-ci/archive/20240813/202408132328.mUpBPGqi-lkp@…) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240813/202408132328.mUpBPGqi-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/202408132328.mUpBPGqi-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from fs/io-wq.c:14: In file included from include/linux/mmu_context.h:5: In file included from arch/x86/include/asm/mmu_context.h:12: In file included from arch/x86/include/asm/pgalloc.h:7: include/linux/pagemap.h:425:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict] 425 | filler_t *filler = (filler_t *)mapping->a_ops->readpage; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. >> fs/io-wq.o: warning: objtool: io_wq_create()+0x221: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 13169/23490] fs/pipe.o: warning: objtool: generic_pipe_buf_get()+0xc0: unreachable instruction
by kernel test robot 13 Aug '24

13 Aug '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: ffc1b506e4066379411520003b9c59e509b05252 commit: 8b9ea9010139596e71aae4be5264c3dd901b13cb [13169/23490] pagecache: support percpu refcount to imporve performance config: x86_64-buildonly-randconfig-001-20240812 (https://download.01.org/0day-ci/archive/20240813/202408132002.WTqihNUY-lkp@…) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240813/202408132002.WTqihNUY-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/202408132002.WTqihNUY-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from fs/pipe.c:21: include/linux/pagemap.h:425:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict] 425 | filler_t *filler = (filler_t *)mapping->a_ops->readpage; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. >> fs/pipe.o: warning: objtool: generic_pipe_buf_get()+0xc0: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6] selftests/bpf: Add netlink helper library
by Pu Lehui 13 Aug '24

13 Aug '24

From: Daniel Borkmann <daniel(a)iogearbox.net> mainline inclusion from mainline-v6.7-rc1 commit 51f1892b5289f0c09745d3bedb36493555d6d90c category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAJQI1 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Add a minimal netlink helper library for the BPF selftests. This has been taken and cut down and cleaned up from iproute2. This covers basics such as netdevice creation which we need for BPF selftests / BPF CI given iproute2 package cannot cover it yet. Stanislav Fomichev suggested that this could be replaced in future by ynl tool generated C code once it has RTNL support to create devices. Once we get to this point the BPF CI would also need to add libmnl. If no further extensions are needed, a second option could be that we remove this code again once iproute2 package has support. Signed-off-by: Daniel Borkmann <daniel(a)iogearbox.net> Acked-by: Martin KaFai Lau <martin.lau(a)kernel.org> Link: https://lore.kernel.org/r/20231024214904.29825-7-daniel@iogearbox.net Signed-off-by: Martin KaFai Lau <martin.lau(a)kernel.org> Signed-off-by: Pu Lehui <pulehui(a)huawei.com> --- tools/testing/selftests/bpf/Makefile | 19 +- tools/testing/selftests/bpf/netlink_helpers.c | 358 ++++++++++++++++++ tools/testing/selftests/bpf/netlink_helpers.h | 46 +++ 3 files changed, 418 insertions(+), 5 deletions(-) create mode 100644 tools/testing/selftests/bpf/netlink_helpers.c create mode 100644 tools/testing/selftests/bpf/netlink_helpers.h diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index c521fb5928c4..12180cdea9e6 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -579,11 +579,20 @@ endef # Define test_progs test runner. TRUNNER_TESTS_DIR := prog_tests TRUNNER_BPF_PROGS_DIR := progs -TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \ - network_helpers.c testing_helpers.c \ - btf_helpers.c flow_dissector_load.h \ - cap_helpers.c test_loader.c xsk.c disasm.c \ - json_writer.c unpriv_helpers.c \ +TRUNNER_EXTRA_SOURCES := test_progs.c \ + cgroup_helpers.c \ + trace_helpers.c \ + network_helpers.c \ + testing_helpers.c \ + btf_helpers.c \ + cap_helpers.c \ + unpriv_helpers.c \ + netlink_helpers.c \ + test_loader.c \ + xsk.c \ + disasm.c \ + json_writer.c \ + flow_dissector_load.h \ ip_check_defrag_frags.h TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \ $(OUTPUT)/liburandom_read.so \ diff --git a/tools/testing/selftests/bpf/netlink_helpers.c b/tools/testing/selftests/bpf/netlink_helpers.c new file mode 100644 index 000000000000..caf36eb1d032 --- /dev/null +++ b/tools/testing/selftests/bpf/netlink_helpers.c @@ -0,0 +1,358 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Taken & modified from iproute2's libnetlink.c + * Authors: Alexey Kuznetsov, <kuznet(a)ms2.inr.ac.ru> + */ +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> +#include <time.h> +#include <sys/socket.h> + +#include "netlink_helpers.h" + +static int rcvbuf = 1024 * 1024; + +void rtnl_close(struct rtnl_handle *rth) +{ + if (rth->fd >= 0) { + close(rth->fd); + rth->fd = -1; + } +} + +int rtnl_open_byproto(struct rtnl_handle *rth, unsigned int subscriptions, + int protocol) +{ + socklen_t addr_len; + int sndbuf = 32768; + int one = 1; + + memset(rth, 0, sizeof(*rth)); + rth->proto = protocol; + rth->fd = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, protocol); + if (rth->fd < 0) { + perror("Cannot open netlink socket"); + return -1; + } + if (setsockopt(rth->fd, SOL_SOCKET, SO_SNDBUF, + &sndbuf, sizeof(sndbuf)) < 0) { + perror("SO_SNDBUF"); + goto err; + } + if (setsockopt(rth->fd, SOL_SOCKET, SO_RCVBUF, + &rcvbuf, sizeof(rcvbuf)) < 0) { + perror("SO_RCVBUF"); + goto err; + } + + /* Older kernels may no support extended ACK reporting */ + setsockopt(rth->fd, SOL_NETLINK, NETLINK_EXT_ACK, + &one, sizeof(one)); + + memset(&rth->local, 0, sizeof(rth->local)); + rth->local.nl_family = AF_NETLINK; + rth->local.nl_groups = subscriptions; + + if (bind(rth->fd, (struct sockaddr *)&rth->local, + sizeof(rth->local)) < 0) { + perror("Cannot bind netlink socket"); + goto err; + } + addr_len = sizeof(rth->local); + if (getsockname(rth->fd, (struct sockaddr *)&rth->local, + &addr_len) < 0) { + perror("Cannot getsockname"); + goto err; + } + if (addr_len != sizeof(rth->local)) { + fprintf(stderr, "Wrong address length %d\n", addr_len); + goto err; + } + if (rth->local.nl_family != AF_NETLINK) { + fprintf(stderr, "Wrong address family %d\n", + rth->local.nl_family); + goto err; + } + rth->seq = time(NULL); + return 0; +err: + rtnl_close(rth); + return -1; +} + +int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions) +{ + return rtnl_open_byproto(rth, subscriptions, NETLINK_ROUTE); +} + +static int __rtnl_recvmsg(int fd, struct msghdr *msg, int flags) +{ + int len; + + do { + len = recvmsg(fd, msg, flags); + } while (len < 0 && (errno == EINTR || errno == EAGAIN)); + if (len < 0) { + fprintf(stderr, "netlink receive error %s (%d)\n", + strerror(errno), errno); + return -errno; + } + if (len == 0) { + fprintf(stderr, "EOF on netlink\n"); + return -ENODATA; + } + return len; +} + +static int rtnl_recvmsg(int fd, struct msghdr *msg, char **answer) +{ + struct iovec *iov = msg->msg_iov; + char *buf; + int len; + + iov->iov_base = NULL; + iov->iov_len = 0; + + len = __rtnl_recvmsg(fd, msg, MSG_PEEK | MSG_TRUNC); + if (len < 0) + return len; + if (len < 32768) + len = 32768; + buf = malloc(len); + if (!buf) { + fprintf(stderr, "malloc error: not enough buffer\n"); + return -ENOMEM; + } + iov->iov_base = buf; + iov->iov_len = len; + len = __rtnl_recvmsg(fd, msg, 0); + if (len < 0) { + free(buf); + return len; + } + if (answer) + *answer = buf; + else + free(buf); + return len; +} + +static void rtnl_talk_error(struct nlmsghdr *h, struct nlmsgerr *err, + nl_ext_ack_fn_t errfn) +{ + fprintf(stderr, "RTNETLINK answers: %s\n", + strerror(-err->error)); +} + +static int __rtnl_talk_iov(struct rtnl_handle *rtnl, struct iovec *iov, + size_t iovlen, struct nlmsghdr **answer, + bool show_rtnl_err, nl_ext_ack_fn_t errfn) +{ + struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK }; + struct iovec riov; + struct msghdr msg = { + .msg_name = &nladdr, + .msg_namelen = sizeof(nladdr), + .msg_iov = iov, + .msg_iovlen = iovlen, + }; + unsigned int seq = 0; + struct nlmsghdr *h; + int i, status; + char *buf; + + for (i = 0; i < iovlen; i++) { + h = iov[i].iov_base; + h->nlmsg_seq = seq = ++rtnl->seq; + if (answer == NULL) + h->nlmsg_flags |= NLM_F_ACK; + } + status = sendmsg(rtnl->fd, &msg, 0); + if (status < 0) { + perror("Cannot talk to rtnetlink"); + return -1; + } + /* change msg to use the response iov */ + msg.msg_iov = &riov; + msg.msg_iovlen = 1; + i = 0; + while (1) { +next: + status = rtnl_recvmsg(rtnl->fd, &msg, &buf); + ++i; + if (status < 0) + return status; + if (msg.msg_namelen != sizeof(nladdr)) { + fprintf(stderr, + "Sender address length == %d!\n", + msg.msg_namelen); + exit(1); + } + for (h = (struct nlmsghdr *)buf; status >= sizeof(*h); ) { + int len = h->nlmsg_len; + int l = len - sizeof(*h); + + if (l < 0 || len > status) { + if (msg.msg_flags & MSG_TRUNC) { + fprintf(stderr, "Truncated message!\n"); + free(buf); + return -1; + } + fprintf(stderr, + "Malformed message: len=%d!\n", + len); + exit(1); + } + if (nladdr.nl_pid != 0 || + h->nlmsg_pid != rtnl->local.nl_pid || + h->nlmsg_seq > seq || h->nlmsg_seq < seq - iovlen) { + /* Don't forget to skip that message. */ + status -= NLMSG_ALIGN(len); + h = (struct nlmsghdr *)((char *)h + NLMSG_ALIGN(len)); + continue; + } + if (h->nlmsg_type == NLMSG_ERROR) { + struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h); + int error = err->error; + + if (l < sizeof(struct nlmsgerr)) { + fprintf(stderr, "ERROR truncated\n"); + free(buf); + return -1; + } + if (error) { + errno = -error; + if (rtnl->proto != NETLINK_SOCK_DIAG && + show_rtnl_err) + rtnl_talk_error(h, err, errfn); + } + if (i < iovlen) { + free(buf); + goto next; + } + if (error) { + free(buf); + return -i; + } + if (answer) + *answer = (struct nlmsghdr *)buf; + else + free(buf); + return 0; + } + if (answer) { + *answer = (struct nlmsghdr *)buf; + return 0; + } + fprintf(stderr, "Unexpected reply!\n"); + status -= NLMSG_ALIGN(len); + h = (struct nlmsghdr *)((char *)h + NLMSG_ALIGN(len)); + } + free(buf); + if (msg.msg_flags & MSG_TRUNC) { + fprintf(stderr, "Message truncated!\n"); + continue; + } + if (status) { + fprintf(stderr, "Remnant of size %d!\n", status); + exit(1); + } + } +} + +static int __rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, + struct nlmsghdr **answer, bool show_rtnl_err, + nl_ext_ack_fn_t errfn) +{ + struct iovec iov = { + .iov_base = n, + .iov_len = n->nlmsg_len, + }; + + return __rtnl_talk_iov(rtnl, &iov, 1, answer, show_rtnl_err, errfn); +} + +int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, + struct nlmsghdr **answer) +{ + return __rtnl_talk(rtnl, n, answer, true, NULL); +} + +int addattr(struct nlmsghdr *n, int maxlen, int type) +{ + return addattr_l(n, maxlen, type, NULL, 0); +} + +int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data) +{ + return addattr_l(n, maxlen, type, &data, sizeof(__u8)); +} + +int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data) +{ + return addattr_l(n, maxlen, type, &data, sizeof(__u16)); +} + +int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data) +{ + return addattr_l(n, maxlen, type, &data, sizeof(__u32)); +} + +int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data) +{ + return addattr_l(n, maxlen, type, &data, sizeof(__u64)); +} + +int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *str) +{ + return addattr_l(n, maxlen, type, str, strlen(str)+1); +} + +int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, + int alen) +{ + int len = RTA_LENGTH(alen); + struct rtattr *rta; + + if (NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len) > maxlen) { + fprintf(stderr, "%s: Message exceeded bound of %d\n", + __func__, maxlen); + return -1; + } + rta = NLMSG_TAIL(n); + rta->rta_type = type; + rta->rta_len = len; + if (alen) + memcpy(RTA_DATA(rta), data, alen); + n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len); + return 0; +} + +int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len) +{ + if (NLMSG_ALIGN(n->nlmsg_len) + NLMSG_ALIGN(len) > maxlen) { + fprintf(stderr, "%s: Message exceeded bound of %d\n", + __func__, maxlen); + return -1; + } + + memcpy(NLMSG_TAIL(n), data, len); + memset((void *) NLMSG_TAIL(n) + len, 0, NLMSG_ALIGN(len) - len); + n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + NLMSG_ALIGN(len); + return 0; +} + +struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type) +{ + struct rtattr *nest = NLMSG_TAIL(n); + + addattr_l(n, maxlen, type, NULL, 0); + return nest; +} + +int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest) +{ + nest->rta_len = (void *)NLMSG_TAIL(n) - (void *)nest; + return n->nlmsg_len; +} diff --git a/tools/testing/selftests/bpf/netlink_helpers.h b/tools/testing/selftests/bpf/netlink_helpers.h new file mode 100644 index 000000000000..68116818a47e --- /dev/null +++ b/tools/testing/selftests/bpf/netlink_helpers.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef NETLINK_HELPERS_H +#define NETLINK_HELPERS_H + +#include <string.h> +#include <linux/netlink.h> +#include <linux/rtnetlink.h> + +struct rtnl_handle { + int fd; + struct sockaddr_nl local; + struct sockaddr_nl peer; + __u32 seq; + __u32 dump; + int proto; + FILE *dump_fp; +#define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01 +#define RTNL_HANDLE_F_SUPPRESS_NLERR 0x02 +#define RTNL_HANDLE_F_STRICT_CHK 0x04 + int flags; +}; + +#define NLMSG_TAIL(nmsg) \ + ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) + +typedef int (*nl_ext_ack_fn_t)(const char *errmsg, uint32_t off, + const struct nlmsghdr *inner_nlh); + +int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions) + __attribute__((warn_unused_result)); +void rtnl_close(struct rtnl_handle *rth); +int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, + struct nlmsghdr **answer) + __attribute__((warn_unused_result)); + +int addattr(struct nlmsghdr *n, int maxlen, int type); +int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); +int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data); +int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); +int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data); +int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data); +int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen); +int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); +struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); +int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); +#endif /* NETLINK_HELPERS_H */ -- 2.34.1

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[openeuler:openEuler-1.0-LTS 7089/23486] drivers/fpga/dfl.o: warning: objtool: build_info_commit_dev()+0x238: unreachable instruction
by kernel test robot 13 Aug '24

13 Aug '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 314cc4a8c77c14af0637ae2d7bff746d8002cfab commit: 99e28159a079ea6af5a5b789e83b68240d67f9ff [7089/23486] fpga: dfl: Add lockdep classes for pdata->lock config: x86_64-buildonly-randconfig-001-20240812 (https://download.01.org/0day-ci/archive/20240813/202408131241.MUQOf023-lkp@…) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240813/202408131241.MUQOf023-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/202408131241.MUQOf023-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/fpga/dfl.c:57: warning: cannot understand function prototype: 'struct dfl_dev_info ' drivers/fpga/dfl.c:77: warning: cannot understand function prototype: 'struct dfl_chardev_info ' >> drivers/fpga/dfl.o: warning: objtool: build_info_commit_dev()+0x238: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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