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udmabuf.c:30:17: warning: implicit declaration of function 'open'

by Naresh Kamboju

Following build warnings noticed while building stable-rc Linux 5.14.1-rc1 with gcc-11 for arm64 architecture. aarch64-linux-gnu-gcc -I../../../../../usr/include/ udmabuf.c -o kselftest/drivers/dma-buf/udmabuf udmabuf.c: In function 'main': udmabuf.c:30:17: warning: implicit declaration of function 'open'; did you mean 'popen'? [-Wimplicit-function-declaration] 30 | devfd = open(/dev/udmabuf, O_RDWR); | ^~~~ | popen udmabuf.c:42:15: warning: implicit declaration of function 'fcntl' [-Wimplicit-function-declaration] 42 | ret = fcntl(memfd, F_ADD_SEALS, F_SEAL_SHRINK); | ^~~~~ make[3]: Leaving directory '/builds/linux/tools/testing/selftests/drivers/dma-buf' Build config: https://builds.tuxbuild.com/1xXcUtI2INra8KaHjOXXQMOyAD0/config Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> meta data: ----------- git_describe: v5.14-rc6-389-g95dc72bb9c03, git_repo: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc, git_sha: 95dc72bb9c032093e79e628a98c927b3db73a6c3, git_short_log: 95dc72bb9c03 (\Linux 5.14.1-rc1\), kconfig: [ defconfig, https://raw.githubusercontent.com/Linaro/meta-lkft/sumo/recipes-kernel/linu…, https://raw.githubusercontent.com/Linaro/meta-lkft/sumo/recipes-kernel/linu…, https://raw.githubusercontent.com/Linaro/meta-lkft/sumo/recipes-kernel/linu…, https://raw.githubusercontent.com/Linaro/meta-lkft/sumo/recipes-kernel/linu…, https://raw.githubusercontent.com/Linaro/meta-lkft/sumo/recipes-kernel/linu…, CONFIG_ARM64_MODULE_PLTS=y ], kernel_version: 5.14.1-rc1, target_arch: arm64, targets: [ dtbs, dtbs-legacy, headers, kernel, kselftest, kselftest-merge, modules ], toolchain: gcc-11, steps to reproduce: https://builds.tuxbuild.com/1xXcUtI2INra8KaHjOXXQMOyAD0/tuxmake_reproducer.… -- Linaro LKFT https://lkft.linaro.org

4 years

1
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[REGRESSION] lkft kselftest for next-20210903

by lkft＠linaro.org

## Build * kernel: 5.14.0 * git: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next * git branch: master * git commit: 14c6345e6e6ca0570f3897214f24748ef6009761 * git describe: next-20210903 * test details: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20210903 ## Regressions (compared to next-20210902) * i386, kselftest-net - net.ip_defrag.sh * i386, kselftest-rtc - rtc.rtctest * qemu_arm64, kselftest-timers - timers.rtcpie * qemu_x86_64, kselftest-rtc - rtc.rtctest Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> ## Fixes (compared to next-20210902) * i386, kselftest-net - net.so_txtime.sh * qemu-arm64-gic-version2, kselftest-cgroup - cgroup.test_freezer - cgroup.test_freezer.test_cgfreezer_ptrace * qemu-arm64-gic-version3, kselftest-cgroup - cgroup.test_freezer - cgroup.test_freezer.test_cgfreezer_ptrace * qemu-arm64-mte, kselftest-timers - timers.rtcpie * qemu_arm, kselftest-cgroup - cgroup.test_freezer - cgroup.test_freezer.test_cgfreezer_migrate * qemu_arm, kselftest-rtc - rtc.rtctest * qemu_x86_64, kselftest-timers - timers.rtcpie ## Test result summary total: 5548, pass: 3276, fail: 566, skip: 1706, xfail: 0 ## Build Summary ## Test suites summary * kselftest- * kselftest-android * kselftest-arm64 * kselftest-arm64/arm64.btitest.bti_c_func * kselftest-arm64/arm64.btitest.bti_j_func * kselftest-arm64/arm64.btitest.bti_jc_func * kselftest-arm64/arm64.btitest.bti_none_func * kselftest-arm64/arm64.btitest.nohint_func * kselftest-arm64/arm64.btitest.paciasp_func * kselftest-arm64/arm64.nobtitest.bti_c_func * kselftest-arm64/arm64.nobtitest.bti_j_func * kselftest-arm64/arm64.nobtitest.bti_jc_func * kselftest-arm64/arm64.nobtitest.bti_none_func * kselftest-arm64/arm64.nobtitest.nohint_func * kselftest-arm64/arm64.nobtitest.paciasp_func * kselftest-bpf * kselftest-breakpoints * kselftest-capabilities * kselftest-cgroup * kselftest-clone3 * kselftest-core * kselftest-cpu-hotplug * kselftest-cpufreq * kselftest-drivers * kselftest-efivarfs * kselftest-filesystems * kselftest-firmware * kselftest-fpu * kselftest-futex * kselftest-gpio * kselftest-intel_pstate * kselftest-ipc * kselftest-ir * kselftest-kcmp * kselftest-kexec * kselftest-kvm * kselftest-lib * kselftest-livepatch * kselftest-lkdtm * kselftest-membarrier * kselftest-memfd * kselftest-memory-hotplug * kselftest-mincore * kselftest-mount * kselftest-mqueue * kselftest-net * kselftest-netfilter * kselftest-nsfs * kselftest-openat2 * kselftest-pid_namespace * kselftest-pidfd * kselftest-proc * kselftest-pstore * kselftest-ptrace * kselftest-rseq * kselftest-rtc * kselftest-seccomp * kselftest-sigaltstack * kselftest-size * kselftest-splice * kselftest-static_keys * kselftest-sync * kselftest-sysctl * kselftest-tc-testing * kselftest-timens * kselftest-timers * kselftest-tmpfs * kselftest-tpm2 * kselftest-user * kselftest-vm * kselftest-x86 * kselftest-zram -- Linaro LKFT https://lkft.linaro.org

4 years

1
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[GIT PULL] Kselftest update for Linux 5.15-rc1

by Shuah Khan

Hi Linus, Please pull the following Kselftest update for Linux 5.15-rc1. This Kselftest update for Linux 5.15-rc1 consists of fixes to build and test failures. -- openat2 test failure for O_LARGEFILE flag on ARM64 -- x86 test build failures related to glibc 2.34 adding support for variable sized MINSIGSTKSZ and SIGSTKSZ -- removing obsolete configs in sync and cpufreq config files -- minor spelling and duplicate header include cleanups diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 2734d6c1b1a089fb593ef6a23d4b70903526fe0c: Linux 5.14-rc2 (2021-07-18 14:13:49 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux-kselftest-next-5.15-rc1 for you to fetch changes up to 67d6d80d90fb27b3cc7659f464fa3b87fd67bc14: selftests/cpufreq: Rename DEBUG_PI_LIST to DEBUG_PLIST (2021-08-31 11:00:02 -0600) ---------------------------------------------------------------- linux-kselftest-next-5.15-rc1 This Kselftest update for Linux 5.15-rc1 consists of fixes to build and test failures. -- openat2 test failure for O_LARGEFILE flag on ARM64 -- x86 test build failures related to glibc 2.34 adding support for variable sized MINSIGSTKSZ and SIGSTKSZ -- removing obsolete configs in sync and cpufreq config files -- minor spelling and duplicate header include cleanups ---------------------------------------------------------------- Baolin Wang (1): selftests: openat2: Fix testing failure for O_LARGEFILE flag Changcheng Deng (1): kselftest:sched: remove duplicate include in cs_prctl_test.c Colin Ian King (1): selftests: safesetid: Fix spelling mistake "cant" -> "can't" Jun Miao (1): selftests/x86: Fix error: variably modified 'altstack_data' at file scope Li Zhijian (2): selftests/sync: Remove the deprecated config SYNC selftests/cpufreq: Rename DEBUG_PI_LIST to DEBUG_PLIST tools/testing/selftests/cpufreq/config | 2 +- tools/testing/selftests/openat2/openat2_test.c | 4 ++++ tools/testing/selftests/safesetid/safesetid-test.c | 2 +- tools/testing/selftests/sched/cs_prctl_test.c | 2 -- tools/testing/selftests/sync/config | 1 - tools/testing/selftests/x86/mov_ss_trap.c | 4 ++-- tools/testing/selftests/x86/sigreturn.c | 7 +++---- tools/testing/selftests/x86/single_step_syscall.c | 4 ++-- tools/testing/selftests/x86/syscall_arg_fault.c | 7 +++---- 9 files changed, 16 insertions(+), 17 deletions(-) ----------------------------------------------------------------

4 years

2
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[PATCH bpf-next] selftests/bpf: Fix build of task_pt_regs tests for arm64

by Jean-Philippe Brucker

struct pt_regs is not exported to userspace on all archs. arm64 and s390 export "user_pt_regs" instead, which causes build failure at the moment: progs/test_task_pt_regs.c:8:16: error: variable has incomplete type 'struct pt_regs' struct pt_regs current_regs = {}; Use the multi-arch macros defined by tools/lib/bpf/bpf_tracing.h to copy the pt_regs into a locally-defined struct. Copying the user_pt_regs struct on arm64 wouldn't work because the struct is too large and the compiler complains about using too much stack. Fixes: 576d47bb1a92 ("bpf: selftests: Add bpf_task_pt_regs() selftest") Signed-off-by: Jean-Philippe Brucker <jean-philippe(a)linaro.org> --- .../selftests/bpf/bpf_pt_regs_helpers.h | 30 +++++++++++++++++++ .../selftests/bpf/prog_tests/task_pt_regs.c | 1 + .../selftests/bpf/progs/test_task_pt_regs.c | 10 ++++--- 3 files changed, 37 insertions(+), 4 deletions(-) create mode 100644 tools/testing/selftests/bpf/bpf_pt_regs_helpers.h diff --git a/tools/testing/selftests/bpf/bpf_pt_regs_helpers.h b/tools/testing/selftests/bpf/bpf_pt_regs_helpers.h new file mode 100644 index 000000000000..7531f4824ead --- /dev/null +++ b/tools/testing/selftests/bpf/bpf_pt_regs_helpers.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __BPF_PT_REGS_HELPERS +#define __BPF_PT_REGS_HELPERS + +#include <bpf/bpf_tracing.h> + +struct bpf_pt_regs { + unsigned long long parm[5]; + unsigned long long ret; + unsigned long long fp; + unsigned long long rc; + unsigned long long sp; + unsigned long long ip; +}; + +static inline void bpf_copy_pt_regs(struct bpf_pt_regs *dest, struct pt_regs *src) +{ + dest->parm[0] = PT_REGS_PARM1(src); + dest->parm[1] = PT_REGS_PARM2(src); + dest->parm[2] = PT_REGS_PARM3(src); + dest->parm[3] = PT_REGS_PARM4(src); + dest->parm[4] = PT_REGS_PARM5(src); + dest->ret = PT_REGS_RET(src); + dest->fp = PT_REGS_FP(src); + dest->rc = PT_REGS_RC(src); + dest->sp = PT_REGS_SP(src); + dest->ip = PT_REGS_IP(src); +} + +#endif /* __BPF_PT_REGS_HELPERS */ diff --git a/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c b/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c index 53f0e0fa1a53..196453b75937 100644 --- a/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c +++ b/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c @@ -2,6 +2,7 @@ #define _GNU_SOURCE #include <test_progs.h> #include <linux/ptrace.h> +#include "bpf_pt_regs_helpers.h" #include "test_task_pt_regs.skel.h" void test_task_pt_regs(void) diff --git a/tools/testing/selftests/bpf/progs/test_task_pt_regs.c b/tools/testing/selftests/bpf/progs/test_task_pt_regs.c index 6c059f1cfa1b..348da3509093 100644 --- a/tools/testing/selftests/bpf/progs/test_task_pt_regs.c +++ b/tools/testing/selftests/bpf/progs/test_task_pt_regs.c @@ -5,8 +5,10 @@ #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> -struct pt_regs current_regs = {}; -struct pt_regs ctx_regs = {}; +#include "bpf_pt_regs_helpers.h" + +struct bpf_pt_regs current_regs = {}; +struct bpf_pt_regs ctx_regs = {}; int uprobe_res = 0; SEC("uprobe/trigger_func") @@ -17,8 +19,8 @@ int handle_uprobe(struct pt_regs *ctx) current = bpf_get_current_task_btf(); regs = (struct pt_regs *) bpf_task_pt_regs(current); - __builtin_memcpy(&current_regs, regs, sizeof(*regs)); - __builtin_memcpy(&ctx_regs, ctx, sizeof(*ctx)); + bpf_copy_pt_regs(&current_regs, regs); + bpf_copy_pt_regs(&ctx_regs, ctx); /* Prove that uprobe was run */ uprobe_res = 1; -- 2.33.0

4 years

4
4
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[RFCv3 00/15] tcp: Initial support for RFC5925 auth option

by Leonard Crestez

This is similar to TCP MD5 in functionality but it's sufficiently different that wire formats are incompatible. Compared to TCP-MD5 more algorithms are supported and multiple keys can be used on the same connection but there is still no negotiation mechanism. Expected use-case is protecting long-duration BGP/LDP connections between routers using pre-shared keys. This version is mostly functional, it incorporates ABI feedback from previous versions and adds tests to kselftests. More discussion and testing is required and obvious optimizations were skipped in favor of adding functionality. Here are several flaws: * RST and TIMEWAIT are mostly unhandled * Locking is lockdep-clean but need to be revised * Sequence Number Extension not implemented * User is responsible for ensuring keys do not overlap * Traffic key is not cached (reducing performance) Not all ABI suggestions were incorporated, they can be discussed further. However I very much want to avoid supporting algorithms beyond RFC5926. Test suite was added to tools/selftests/tcp_authopt. Tests are written in python using pytest and scapy and check the API in some detail and validate packet captures. Python code is already in linux and in kselftests but virtualenvs not very much. This test suite uses `tox` to create a private virtualenv and hide dependencies. Let me know if this is OK or how it can be improved. Limited testing support is also included in nettest and fcnal-test.sh, those tests are slow and cover much less. Changes for frr: https://github.com/FRRouting/frr/pull/9442 That PR was made early for ABI feedback, it has many issues. Changes for yabgp: https://github.com/cdleonard/yabgp/commits/tcp_authopt The patched version of yabgp can establish a BGP session protected by TCP Authentication Option with a Cisco IOS-XR router. It old now. Changes since RFCv2: * Removed local_id from ABI and match on send_id/recv_id/addr * Add all relevant out-of-tree tests to tools/testing/selftests * Return an error instead of ignoring unknown flags, hopefully this makes it easier to extend. * Check sk_family before __tcp_authopt_info_get_or_create in tcp_set_authopt_key * Use sock_owned_by_me instead of WARN_ON(!lockdep_sock_is_held(sk)) * Fix some intermediate build failures reported by kbuild robot * Improve documentation Link: https://lore.kernel.org/netdev/cover.1628544649.git.cdleonard@gmail.com/ Changes since RFC: * Split into per-topic commits for ease of review. The intermediate commits compile with a few "unused function" warnings and don't do anything useful by themselves. * Add ABI documention including kernel-doc on uapi * Fix lockdep warnings from crypto by creating pools with one shash for each cpu * Accept short options to setsockopt by padding with zeros; this approach allows increasing the size of the structs in the future. * Support for aes-128-cmac-96 * Support for binding addresses to keys in a way similar to old tcp_md5 * Add support for retrieving received keyid/rnextkeyid and controling the keyid/rnextkeyid being sent. Link: https://lore.kernel.org/netdev/01383a8751e97ef826ef2adf93bfde3a08195a43.162… Leonard Crestez (15): tcp: authopt: Initial support and key management docs: Add user documentation for tcp_authopt selftests: Initial tcp_authopt test module selftests: tcp_authopt: Initial sockopt manipulation tcp: authopt: Add crypto initialization tcp: authopt: Compute packet signatures tcp: authopt: Hook into tcp core tcp: authopt: Add snmp counters selftests: tcp_authopt: Test key address binding selftests: tcp_authopt: Capture and verify packets selftests: Initial tcp_authopt support for nettest selftests: Initial tcp_authopt support for fcnal-test selftests: Add -t tcp_authopt option for fcnal-test.sh tcp: authopt: Add key selection controls selftests: tcp_authopt: Add tests for rollover Documentation/networking/index.rst | 1 + Documentation/networking/tcp_authopt.rst | 69 + include/linux/tcp.h | 6 + include/net/tcp.h | 1 + include/net/tcp_authopt.h | 134 ++ include/uapi/linux/snmp.h | 1 + include/uapi/linux/tcp.h | 110 ++ net/ipv4/Kconfig | 14 + net/ipv4/Makefile | 1 + net/ipv4/proc.c | 1 + net/ipv4/tcp.c | 27 + net/ipv4/tcp_authopt.c | 1168 +++++++++++++++++ net/ipv4/tcp_input.c | 17 + net/ipv4/tcp_ipv4.c | 5 + net/ipv4/tcp_minisocks.c | 2 + net/ipv4/tcp_output.c | 74 +- net/ipv6/tcp_ipv6.c | 4 + tools/testing/selftests/net/fcnal-test.sh | 34 + tools/testing/selftests/net/nettest.c | 34 +- tools/testing/selftests/tcp_authopt/Makefile | 5 + .../testing/selftests/tcp_authopt/README.rst | 15 + tools/testing/selftests/tcp_authopt/config | 6 + tools/testing/selftests/tcp_authopt/run.sh | 11 + tools/testing/selftests/tcp_authopt/setup.cfg | 17 + tools/testing/selftests/tcp_authopt/setup.py | 5 + .../tcp_authopt/tcp_authopt_test/__init__.py | 0 .../tcp_authopt/tcp_authopt_test/conftest.py | 21 + .../full_tcp_sniff_session.py | 53 + .../tcp_authopt_test/linux_tcp_authopt.py | 198 +++ .../tcp_authopt_test/netns_fixture.py | 63 + .../tcp_authopt/tcp_authopt_test/server.py | 82 ++ .../tcp_authopt/tcp_authopt_test/sockaddr.py | 101 ++ .../tcp_authopt_test/tcp_authopt_alg.py | 276 ++++ .../tcp_authopt/tcp_authopt_test/test_bind.py | 143 ++ .../tcp_authopt_test/test_rollover.py | 181 +++ .../tcp_authopt_test/test_sockopt.py | 74 ++ .../tcp_authopt_test/test_vectors.py | 359 +++++ .../tcp_authopt_test/test_verify_capture.py | 123 ++ .../tcp_authopt/tcp_authopt_test/utils.py | 154 +++ .../tcp_authopt/tcp_authopt_test/validator.py | 158 +++ 40 files changed, 3746 insertions(+), 2 deletions(-) create mode 100644 Documentation/networking/tcp_authopt.rst create mode 100644 include/net/tcp_authopt.h create mode 100644 net/ipv4/tcp_authopt.c create mode 100644 tools/testing/selftests/tcp_authopt/Makefile create mode 100644 tools/testing/selftests/tcp_authopt/README.rst create mode 100644 tools/testing/selftests/tcp_authopt/config create mode 100755 tools/testing/selftests/tcp_authopt/run.sh create mode 100644 tools/testing/selftests/tcp_authopt/setup.cfg create mode 100644 tools/testing/selftests/tcp_authopt/setup.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/__init__.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/conftest.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/full_tcp_sniff_session.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/linux_tcp_authopt.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/netns_fixture.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/server.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/sockaddr.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/tcp_authopt_alg.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/test_bind.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/test_rollover.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/test_sockopt.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/test_vectors.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/test_verify_capture.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/utils.py create mode 100644 tools/testing/selftests/tcp_authopt/tcp_authopt_test/validator.py base-commit: 3a62c333497b164868fdcd241842a1dd4e331825 -- 2.25.1

4 years

7
30
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[PATCH v5] lib: add basic KUnit test for lib/math

by Daniel Latypov

Add basic test coverage for files that don't require any config options: * part of math.h (what seem to be the most commonly used macros) * gcd.c * lcm.c * int_sqrt.c * reciprocal_div.c (Ignored int_pow.c since it's a simple textbook algorithm.) These tests aren't particularly interesting, but they * provide short and simple examples of parameterized tests * provide a place to add tests for any new files in this dir * are written so adding new test cases to cover edge cases should be easy * looking at code coverage, we hit all the branches in the .c files Signed-off-by: Daniel Latypov <dlatypov(a)google.com> --- Changes since v4: * add in test cases for some math.h macros (abs, round_up/round_down, div_round_down/closest) * use parameterized testing less to keep things terser Changes since v3: * fix `checkpatch.pl --strict` warnings * add test cases for gcd(0,0) and lcm(0,0) * minor: don't test both gcd(a,b) and gcd(b,a) when a == b Changes since v2: mv math_test.c => math_kunit.c Changes since v1: * Rebase and rewrite to use the new parameterized testing support. * misc: fix overflow in literal and inline int_sqrt format string. * related: commit 1f0e943df68a ("Documentation: kunit: provide guidance for testing many inputs") was merged explaining the patterns shown here. * there's an in-flight patch to update it for parameterized testing. v1: https://lore.kernel.org/lkml/20201019224556.3536790-1-dlatypov@google.com/ --- lib/math/Kconfig | 5 + lib/math/Makefile | 2 + lib/math/math_kunit.c | 264 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 271 insertions(+) create mode 100644 lib/math/math_kunit.c diff --git a/lib/math/Kconfig b/lib/math/Kconfig index f19bc9734fa7..6ba8680439c1 100644 --- a/lib/math/Kconfig +++ b/lib/math/Kconfig @@ -15,3 +15,8 @@ config PRIME_NUMBERS config RATIONAL bool + +config MATH_KUNIT_TEST + tristate "KUnit test for lib/math" if !KUNIT_ALL_TESTS + default KUNIT_ALL_TESTS + depends on KUNIT diff --git a/lib/math/Makefile b/lib/math/Makefile index be6909e943bd..30abb7a8d564 100644 --- a/lib/math/Makefile +++ b/lib/math/Makefile @@ -4,3 +4,5 @@ obj-y += div64.o gcd.o lcm.o int_pow.o int_sqrt.o reciprocal_div.o obj-$(CONFIG_CORDIC) += cordic.o obj-$(CONFIG_PRIME_NUMBERS) += prime_numbers.o obj-$(CONFIG_RATIONAL) += rational.o + +obj-$(CONFIG_MATH_KUNIT_TEST) += math_kunit.o diff --git a/lib/math/math_kunit.c b/lib/math/math_kunit.c new file mode 100644 index 000000000000..80a087a32884 --- /dev/null +++ b/lib/math/math_kunit.c @@ -0,0 +1,264 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Simple KUnit suite for math helper funcs that are always enabled. + * + * Copyright (C) 2020, Google LLC. + * Author: Daniel Latypov <dlatypov(a)google.com> + */ + +#include <kunit/test.h> +#include <linux/gcd.h> +#include <linux/kernel.h> +#include <linux/lcm.h> +#include <linux/reciprocal_div.h> + +static void abs_test(struct kunit *test) +{ + KUNIT_EXPECT_EQ(test, abs('\0'), '\0'); + KUNIT_EXPECT_EQ(test, abs('a'), 'a'); + KUNIT_EXPECT_EQ(test, abs(-'a'), 'a'); + + /* The expression in the macro is actually promoted to an int. */ + KUNIT_EXPECT_EQ(test, abs((short)0), 0); + KUNIT_EXPECT_EQ(test, abs((short)42), 42); + KUNIT_EXPECT_EQ(test, abs((short)-42), 42); + + KUNIT_EXPECT_EQ(test, abs(0), 0); + KUNIT_EXPECT_EQ(test, abs(42), 42); + KUNIT_EXPECT_EQ(test, abs(-42), 42); + + KUNIT_EXPECT_EQ(test, abs(0L), 0L); + KUNIT_EXPECT_EQ(test, abs(42L), 42L); + KUNIT_EXPECT_EQ(test, abs(-42L), 42L); + + KUNIT_EXPECT_EQ(test, abs(0LL), 0LL); + KUNIT_EXPECT_EQ(test, abs(42LL), 42LL); + KUNIT_EXPECT_EQ(test, abs(-42LL), 42LL); + + /* Unsigned types get casted to signed. */ + KUNIT_EXPECT_EQ(test, abs(0ULL), 0LL); + KUNIT_EXPECT_EQ(test, abs(42ULL), 42LL); +} + +static void int_sqrt_test(struct kunit *test) +{ + KUNIT_EXPECT_EQ(test, int_sqrt(0UL), 0UL); + KUNIT_EXPECT_EQ(test, int_sqrt(1UL), 1UL); + KUNIT_EXPECT_EQ(test, int_sqrt(4UL), 2UL); + KUNIT_EXPECT_EQ(test, int_sqrt(5UL), 2UL); + KUNIT_EXPECT_EQ(test, int_sqrt(8UL), 2UL); + KUNIT_EXPECT_EQ(test, int_sqrt(1UL << 30), 1UL << 15); +} + +static void round_up_test(struct kunit *test) +{ + KUNIT_EXPECT_EQ(test, round_up(0, 1), 0); + KUNIT_EXPECT_EQ(test, round_up(1, 2), 2); + KUNIT_EXPECT_EQ(test, round_up(3, 2), 4); + KUNIT_EXPECT_EQ(test, round_up((1 << 30) - 1, 2), 1 << 30); + KUNIT_EXPECT_EQ(test, round_up((1 << 30) - 1, 1 << 29), 1 << 30); +} + +static void round_down_test(struct kunit *test) +{ + KUNIT_EXPECT_EQ(test, round_down(0, 1), 0); + KUNIT_EXPECT_EQ(test, round_down(1, 2), 0); + KUNIT_EXPECT_EQ(test, round_down(3, 2), 2); + KUNIT_EXPECT_EQ(test, round_down((1 << 30) - 1, 2), (1 << 30) - 2); + KUNIT_EXPECT_EQ(test, round_down((1 << 30) - 1, 1 << 29), 1 << 29); +} + +static void div_round_up_test(struct kunit *test) +{ + KUNIT_EXPECT_EQ(test, DIV_ROUND_UP(0, 1), 0); + KUNIT_EXPECT_EQ(test, DIV_ROUND_UP(20, 10), 2); + KUNIT_EXPECT_EQ(test, DIV_ROUND_UP(21, 10), 3); + KUNIT_EXPECT_EQ(test, DIV_ROUND_UP(21, 20), 2); + KUNIT_EXPECT_EQ(test, DIV_ROUND_UP(21, 99), 1); +} + +static void div_round_closest_test(struct kunit *test) +{ + KUNIT_EXPECT_EQ(test, DIV_ROUND_CLOSEST(0, 1), 0); + KUNIT_EXPECT_EQ(test, DIV_ROUND_CLOSEST(20, 10), 2); + KUNIT_EXPECT_EQ(test, DIV_ROUND_CLOSEST(21, 10), 2); + KUNIT_EXPECT_EQ(test, DIV_ROUND_CLOSEST(25, 10), 3); +} + +/* Generic test case for unsigned long inputs. */ +struct test_case { + unsigned long a, b; + unsigned long result; +}; + +static struct test_case gcd_cases[] = { + { + .a = 0, .b = 0, + .result = 0, + }, + { + .a = 0, .b = 1, + .result = 1, + }, + { + .a = 2, .b = 2, + .result = 2, + }, + { + .a = 2, .b = 4, + .result = 2, + }, + { + .a = 3, .b = 5, + .result = 1, + }, + { + .a = 3 * 9, .b = 3 * 5, + .result = 3, + }, + { + .a = 3 * 5 * 7, .b = 3 * 5 * 11, + .result = 15, + }, + { + .a = 1 << 21, + .b = (1 << 21) - 1, + .result = 1, + }, +}; + +KUNIT_ARRAY_PARAM(gcd, gcd_cases, NULL); + +static void gcd_test(struct kunit *test) +{ + const char *message_fmt = "gcd(%lu, %lu)"; + const struct test_case *test_param = test->param_value; + + KUNIT_EXPECT_EQ_MSG(test, test_param->result, + gcd(test_param->a, test_param->b), + message_fmt, test_param->a, + test_param->b); + + if (test_param->a == test_param->b) + return; + + /* gcd(a,b) == gcd(b,a) */ + KUNIT_EXPECT_EQ_MSG(test, test_param->result, + gcd(test_param->b, test_param->a), + message_fmt, test_param->b, + test_param->a); +} + +static struct test_case lcm_cases[] = { + { + .a = 0, .b = 0, + .result = 0, + }, + { + .a = 0, .b = 1, + .result = 0, + }, + { + .a = 1, .b = 2, + .result = 2, + }, + { + .a = 2, .b = 2, + .result = 2, + }, + { + .a = 3 * 5, .b = 3 * 7, + .result = 3 * 5 * 7, + }, +}; + +KUNIT_ARRAY_PARAM(lcm, lcm_cases, NULL); + +static void lcm_test(struct kunit *test) +{ + const char *message_fmt = "lcm(%lu, %lu)"; + const struct test_case *test_param = test->param_value; + + KUNIT_EXPECT_EQ_MSG(test, test_param->result, + lcm(test_param->a, test_param->b), + message_fmt, test_param->a, + test_param->b); + + if (test_param->a == test_param->b) + return; + + /* lcm(a,b) == lcm(b,a) */ + KUNIT_EXPECT_EQ_MSG(test, test_param->result, + lcm(test_param->b, test_param->a), + message_fmt, test_param->b, + test_param->a); +} + +struct u32_test_case { + u32 a, b; + u32 result; +}; + +static struct u32_test_case reciprocal_div_cases[] = { + { + .a = 0, .b = 1, + .result = 0, + }, + { + .a = 42, .b = 20, + .result = 2, + }, + { + .a = 42, .b = 9999, + .result = 0, + }, + { + .a = (1 << 16), .b = (1 << 14), + .result = 1 << 2, + }, +}; + +KUNIT_ARRAY_PARAM(reciprocal_div, reciprocal_div_cases, NULL); + +static void reciprocal_div_test(struct kunit *test) +{ + const struct u32_test_case *test_param = test->param_value; + struct reciprocal_value rv = reciprocal_value(test_param->b); + + KUNIT_EXPECT_EQ_MSG(test, test_param->result, + reciprocal_divide(test_param->a, rv), + "reciprocal_divide(%u, %u)", + test_param->a, test_param->b); +} + +static void reciprocal_scale_test(struct kunit *test) +{ + KUNIT_EXPECT_EQ(test, reciprocal_scale(0u, 100), 0u); + KUNIT_EXPECT_EQ(test, reciprocal_scale(1u, 100), 0u); + KUNIT_EXPECT_EQ(test, reciprocal_scale(1u << 4, 1 << 28), 1u); + KUNIT_EXPECT_EQ(test, reciprocal_scale(1u << 16, 1 << 28), 1u << 12); + KUNIT_EXPECT_EQ(test, reciprocal_scale(~0u, 1 << 28), (1u << 28) - 1); +} + +static struct kunit_case math_test_cases[] = { + KUNIT_CASE(abs_test), + KUNIT_CASE(int_sqrt_test), + KUNIT_CASE(round_up_test), + KUNIT_CASE(round_down_test), + KUNIT_CASE(div_round_up_test), + KUNIT_CASE(div_round_closest_test), + KUNIT_CASE_PARAM(gcd_test, gcd_gen_params), + KUNIT_CASE_PARAM(lcm_test, lcm_gen_params), + KUNIT_CASE_PARAM(reciprocal_div_test, reciprocal_div_gen_params), + KUNIT_CASE(reciprocal_scale_test), + {} +}; + +static struct kunit_suite math_test_suite = { + .name = "lib-math", + .test_cases = math_test_cases, +}; + +kunit_test_suites(&math_test_suite); + +MODULE_LICENSE("GPL v2"); base-commit: 4fa56ad0d12e24df768c98bffe9039f915d1bc02 -- 2.31.1.295.g9ea45b61b8-goog

4 years

2
4
0 0

[PATCH] selftests/gpio: Fix gpio compiling error

by Li Zhijian

[root@iaas-rpma gpio]# make gcc gpio-mockup-cdev.c -o /home/lizhijian/linux/tools/testing/selftests/gpio/gpio-mockup-cdev gpio-mockup-cdev.c: In function ‘request_line_v2’: gpio-mockup-cdev.c:24:30: error: storage size of ‘req’ isn’t known 24 | struct gpio_v2_line_request req; | ^~~ gpio-mockup-cdev.c:32:14: error: ‘GPIO_V2_LINE_FLAG_OUTPUT’ undeclared (first use in this function); did you mean ‘GPIOLINE_FLAG_IS_OUT’? 32 | if (flags & GPIO_V2_LINE_FLAG_OUTPUT) { | ^~~~~~~~~~~~~~~~~~~~~~~~ Search headers from linux tree like others, such as sched CC: Philip Li <philip.li(a)intel.com> Reported-by: kernel test robot <lkp(a)intel.com> Signed-off-by: Li Zhijian <lizhijian(a)cn.fujitsu.com> --- tools/testing/selftests/gpio/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/gpio/Makefile b/tools/testing/selftests/gpio/Makefile index 39f2bbe8dd3d..42ea7d2aa844 100644 --- a/tools/testing/selftests/gpio/Makefile +++ b/tools/testing/selftests/gpio/Makefile @@ -3,5 +3,6 @@ TEST_PROGS := gpio-mockup.sh TEST_FILES := gpio-mockup-sysfs.sh TEST_GEN_PROGS_EXTENDED := gpio-mockup-cdev +CFLAGS += -I../../../../usr/include include ../lib.mk -- 2.31.1

4 years

3
3
0 0

[V3][PATCH] selftests/x86: Fix error: variably modified 'altstack_data' at file scope

by Jun Miao

Based on glibc 2.33 -> 2.34, there is one new feature: NEWS for version 2.34 ===================== Major new features: * Add _SC_MINSIGSTKSZ and _SC_SIGSTKSZ. When _DYNAMIC_STACK_SIZE_SOURCE or _GNU_SOURCE are defined, MINSIGSTKSZ and SIGSTKSZ are no longer constant on Linux. MINSIGSTKSZ is redefined to sysconf(_SC_MINSIGSTKSZ) and SIGSTKSZ is redefined to sysconf (_SC_SIGSTKSZ). This supports dynamic sized register sets for modern architectural features like Arm SVE. ===================== If _SC_SIGSTKSZ_SOURCE or _GNU_SOURCE are defined, MINSIGSTKSZ and SIGSTKSZ are redefined as: /* Default stack size for a signal handler: sysconf (SC_SIGSTKSZ). */ # undef SIGSTKSZ # define SIGSTKSZ sysconf (_SC_SIGSTKSZ) /* Minimum stack size for a signal handler: SIGSTKSZ. */ # undef MINSIGSTKSZ # define MINSIGSTKSZ SIGSTKSZ Compilation will fail if the source assumes constant MINSIGSTKSZ or SIGSTKSZ. Build error with the GNU C Library 2.34: DEBUG: | sigreturn.c:150:13: error: variably modified 'altstack_data' at file scope | sigreturn.c:150:13: error: variably modified 'altstack_data' at file scope DEBUG: | 150 | static char altstack_data[SIGSTKSZ]; | 150 | static char altstack_data[SIGSTKSZ]; DEBUG: | | ^~~~~~~~~~~~~ DEBUG: | single_step_syscall.c:60:22: error: variably modified 'altstack_data' at file scope DEBUG: | 60 | static unsigned char altstack_data[SIGSTKSZ]; DEBUG: | | ^~~~~~~~~~~~~ Link: https://sourceware.org/pipermail/libc-alpha/2021-January/121996.html Link: https://sourceware.org/pipermail/libc-alpha/2021-August/129718.html Suggested-by: Jianwei Hu <jianwei.hu(a)windriver.com> Signed-off-by: Jun Miao <jun.miao(a)windriver.com> --- tools/testing/selftests/x86/mov_ss_trap.c | 4 ++-- tools/testing/selftests/x86/sigreturn.c | 7 +++---- tools/testing/selftests/x86/single_step_syscall.c | 4 ++-- tools/testing/selftests/x86/syscall_arg_fault.c | 7 +++---- 4 files changed, 10 insertions(+), 12 deletions(-) diff --git a/tools/testing/selftests/x86/mov_ss_trap.c b/tools/testing/selftests/x86/mov_ss_trap.c index 6da0ac3f0135..cc3de6ff9fba 100644 --- a/tools/testing/selftests/x86/mov_ss_trap.c +++ b/tools/testing/selftests/x86/mov_ss_trap.c @@ -47,7 +47,6 @@ unsigned short ss; extern unsigned char breakpoint_insn[]; sigjmp_buf jmpbuf; -static unsigned char altstack_data[SIGSTKSZ]; static void enable_watchpoint(void) { @@ -250,13 +249,14 @@ int main() if (sigsetjmp(jmpbuf, 1) == 0) { printf("[RUN]\tMOV SS; SYSENTER\n"); stack_t stack = { - .ss_sp = altstack_data, + .ss_sp = malloc(sizeof(char) * SIGSTKSZ), .ss_size = SIGSTKSZ, }; if (sigaltstack(&stack, NULL) != 0) err(1, "sigaltstack"); sethandler(SIGSEGV, handle_and_longjmp, SA_RESETHAND | SA_ONSTACK); nr = SYS_getpid; + free(stack.ss_sp); /* Clear EBP first to make sure we segfault cleanly. */ asm volatile ("xorl %%ebp, %%ebp; mov %[ss], %%ss; SYSENTER" : "+a" (nr) : [ss] "m" (ss) : "flags", "rcx" diff --git a/tools/testing/selftests/x86/sigreturn.c b/tools/testing/selftests/x86/sigreturn.c index 57c4f67f16ef..5d7961a5f7f6 100644 --- a/tools/testing/selftests/x86/sigreturn.c +++ b/tools/testing/selftests/x86/sigreturn.c @@ -138,9 +138,6 @@ static unsigned short LDT3(int idx) return (idx << 3) | 7; } -/* Our sigaltstack scratch space. */ -static char altstack_data[SIGSTKSZ]; - static void sethandler(int sig, void (*handler)(int, siginfo_t *, void *), int flags) { @@ -771,7 +768,8 @@ int main() setup_ldt(); stack_t stack = { - .ss_sp = altstack_data, + /* Our sigaltstack scratch space. */ + .ss_sp = malloc(sizeof(char) * SIGSTKSZ), .ss_size = SIGSTKSZ, }; if (sigaltstack(&stack, NULL) != 0) @@ -872,5 +870,6 @@ int main() total_nerrs += test_nonstrict_ss(); #endif + free(stack.ss_sp); return total_nerrs ? 1 : 0; } diff --git a/tools/testing/selftests/x86/single_step_syscall.c b/tools/testing/selftests/x86/single_step_syscall.c index 120ac741fe44..9a30f443e928 100644 --- a/tools/testing/selftests/x86/single_step_syscall.c +++ b/tools/testing/selftests/x86/single_step_syscall.c @@ -57,7 +57,6 @@ static void clearhandler(int sig) static volatile sig_atomic_t sig_traps, sig_eflags; sigjmp_buf jmpbuf; -static unsigned char altstack_data[SIGSTKSZ]; #ifdef __x86_64__ # define REG_IP REG_RIP @@ -210,7 +209,7 @@ int main() unsigned long nr = SYS_getpid; printf("[RUN]\tSet TF and check SYSENTER\n"); stack_t stack = { - .ss_sp = altstack_data, + .ss_sp = malloc(sizeof(char) * SIGSTKSZ), .ss_size = SIGSTKSZ, }; if (sigaltstack(&stack, NULL) != 0) @@ -219,6 +218,7 @@ int main() SA_RESETHAND | SA_ONSTACK); sethandler(SIGILL, print_and_longjmp, SA_RESETHAND); set_eflags(get_eflags() | X86_EFLAGS_TF); + free(stack.ss_sp); /* Clear EBP first to make sure we segfault cleanly. */ asm volatile ("xorl %%ebp, %%ebp; SYSENTER" : "+a" (nr) :: "flags", "rcx" #ifdef __x86_64__ diff --git a/tools/testing/selftests/x86/syscall_arg_fault.c b/tools/testing/selftests/x86/syscall_arg_fault.c index bff474b5efc6..461fa41a4d02 100644 --- a/tools/testing/selftests/x86/syscall_arg_fault.c +++ b/tools/testing/selftests/x86/syscall_arg_fault.c @@ -17,9 +17,6 @@ #include "helpers.h" -/* Our sigaltstack scratch space. */ -static unsigned char altstack_data[SIGSTKSZ]; - static void sethandler(int sig, void (*handler)(int, siginfo_t *, void *), int flags) { @@ -104,7 +101,8 @@ static void sigill(int sig, siginfo_t *info, void *ctx_void) int main() { stack_t stack = { - .ss_sp = altstack_data, + /* Our sigaltstack scratch space. */ + .ss_sp = malloc(sizeof(char) * SIGSTKSZ), .ss_size = SIGSTKSZ, }; if (sigaltstack(&stack, NULL) != 0) @@ -233,5 +231,6 @@ int main() set_eflags(get_eflags() & ~X86_EFLAGS_TF); #endif + free(stack.ss_sp); return 0; } -- 2.32.0

4 years

2
2
0 0

KernelCI Hackfest #2 - Sept 6-10 2021

by Guillaume Tucker

The first KernelCI hackfest[1] early June was successful in getting a number of kernel developers to work alongside the core KernelCI team. Test coverage was increased in particular with kselftest, LTP, KUnit and a new test suite for libcamera. We're now improving documentation and tooling to make it easier for anyone to get started. Find out more about KernelCI on https://kernelci.org. The second hackfest is scheduled for the 6th-10th September. It should be a good opportunity to start discussing and working on upstream kernel testing topics ahead of the Linux Plumbers Conference[2]. Here's the project board where anyone can already add some ideas: https://github.com/orgs/kernelci/projects/5 There is no registration system, but please reply to this email or send a message on IRC (#kernelci libera.chat) or kernelci.slack.com if you would like to take part so you'll get email updates and invitations to the meetings and open hours sessions online. You may just drop in and out at any point during the hackfest as you see fit. The hackfest features: * Daily open hours online using Big Blue Button to discuss things and get support from the KernelCI team * KernelCI team members available across most time zones to provide quick feedback * A curated list of topics and a project board to help set objectives and coordinate efforts between all contributors As always, KernelCI is at the service of the kernel community so please share any feedback you may have to help shape this upcoming hackfest in the best possible way. Thanks, Guillaume [1] https://foundation.kernelci.org/blog/2021/06/24/the-first-ever-kernelci-hac… [2] https://www.linuxplumbersconf.org/event/11/page/104-accepted-microconferenc…

4 years

2
2
0 0

Re: KernelCI Hackfest #2 - Sept 6-10 2021

by Guillaume Tucker

On 02/08/2021 10:00, Guillaume Tucker wrote: > The first KernelCI hackfest[1] early June was successful in getting > a number of kernel developers to work alongside the core KernelCI > team. Test coverage was increased in particular with kselftest, > LTP, KUnit and a new test suite for libcamera. We're now improving > documentation and tooling to make it easier for anyone to get > started. Find out more about KernelCI on https://kernelci.org. > > The second hackfest is scheduled for the 6th-10th September. It > should be a good opportunity to start discussing and working on > upstream kernel testing topics ahead of the Linux Plumbers > Conference[2]. Please find below some extra information for the KernelCI Hackfest which is taking place next week. We're expecting at least some contributors from the Civil Infrastructure Platform project, the Google Chrome OS kernel team, Collabora kernel developers and a few more from the wider Linux kernel community. If you need any direct support, please reply to this email or ask on kernelci.slack.com or IRC #kernelci (libera.chat). > Here's the project board where anyone can already add some ideas: > > https://github.com/orgs/kernelci/projects/5 In order to add an issue to the workboard, please first create one in a KernelCI GitHub repository such as kernelci-core: https://github.com/kernelci/kernelci-core/issues Each contributor to the hackfest should be added to the KernelCI "hackers" team, which has permission to edit the workboard. If you aren't part of this team yet, please ask and you'll be invited. Note: Having a GitHub account is not mandatory for taking part in the hackfest. It's mainly there to facilitate coordination, even though it is required in order to contribute to the KernelCI GitHub repositories. Contributions as part of the hackfest may also be in the kernel tree such as improvements to kselftest, KUnit or bug fixes, or other test suites such as LTP etc. > The hackfest features: > > * Daily open hours online using Big Blue Button to discuss things > and get support from the KernelCI team > > * KernelCI team members available across most time zones to provide > quick feedback > > * A curated list of topics and a project board to help set > objectives and coordinate efforts between all contributors Please see the table below with the proposed daily open hours to accommodate most time zones: Region Zone Time 1 Time 2 East Asia GMT+10 17:00-19:00 03:00-05:00 Europe GMT+2 09:00-11:00 19:00-21:00 UTC 07:00-09:00 17:00-19:00 West America GMT-7 00:00-02:00 10:00-12:00 They will be held as a Big Blue Button virtual conference with the same URL as the last hackfest. It's not being shared publicly to avoid any potential abuse, so please ask if you don't have it already. On Monday, the focus should be put on getting started and reviewing the backlog on the hackfest workboard to distribute things among people or help new contributors find topics suitable for them. Open hours are otherwise opportunities to get more direct support from the KernelCI team or discuss any topic. See you there! Best wishes, Guillaume > [1] https://foundation.kernelci.org/blog/2021/06/24/the-first-ever-kernelci-hac… > [2] https://www.linuxplumbersconf.org/event/11/page/104-accepted-microconferenc…

4 years

1
0
0 0

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