July 2024 - Linux-kselftest-mirror

[PATCH v7] mm, memcg: cg2 memory{.swap,}.peak write handlers

by David Finkel

This revision only updates the tests from the previous revision[1], and integrates an Acked-by[2] and a Reviewed-By[3] into the first commit message. Documentation/admin-guide/cgroup-v2.rst | 22 ++- include/linux/cgroup-defs.h | 5 + include/linux/cgroup.h | 3 + include/linux/memcontrol.h | 5 + include/linux/page_counter.h | 11 +- kernel/cgroup/cgroup-internal.h | 2 + kernel/cgroup/cgroup.c | 7 + mm/memcontrol.c | 116 +++++++++++++-- mm/page_counter.c | 30 +++- tools/testing/selftests/cgroup/cgroup_util.c | 22 +++ tools/testing/selftests/cgroup/cgroup_util.h | 2 + tools/testing/selftests/cgroup/test_memcontrol.c | 264 ++++++++++++++++++++++++++++++++- 12 files changed, 454 insertions(+), 35 deletions(-) [1]: https://lore.kernel.org/cgroups/20240729143743.34236-1-davidf@vimeo.com/T/ [2]: https://lore.kernel.org/cgroups/20240729143743.34236-1-davidf@vimeo.com/T/#… [3]: https://lore.kernel.org/cgroups/20240729143743.34236-1-davidf@vimeo.com/T/#… Thank you all for the support and reviews so far! David Finkel Senior Principal Software Engineer Vimeo Inc.

1 month, 1 week

4
9
0 0

[PATCH v2 0/2] selftests: harness: refactor __constructor_order

by Masahiro Yamada

This series refactors __constructor_order because __constructor_order_last() is unneeded. No code change since v1. I reworded "reverse-order" to "backward-order" in commit description. Masahiro Yamada (2): selftests: harness: remove unneeded __constructor_order_last() selftests: harness: rename __constructor_order for clarification .../drivers/s390x/uvdevice/test_uvdevice.c | 6 ------ tools/testing/selftests/hid/hid_bpf.c | 6 ------ tools/testing/selftests/kselftest_harness.h | 18 ++++-------------- tools/testing/selftests/rtc/rtctest.c | 7 ------- 4 files changed, 4 insertions(+), 33 deletions(-) -- 2.43.0

1 month, 1 week

3
4
0 0

[PATCH v3] lib: Convert test_user_copy to KUnit test

by Vitor Massaru Iha

This adds the conversion of the runtime tests of test_user_copy fuctions, from `lib/test_user_copy.c`to KUnit tests. Signed-off-by: Vitor Massaru Iha <vitor(a)massaru.org> --- v2: * splitted patch in 3: - Allows to install and load modules in root filesystem; - Provides an userspace memory context when tests are compiled as module; - Convert test_user_copy to KUnit test; * removed entry for CONFIG_TEST_USER_COPY; * replaced pr_warn to KUNIT_EXPECT_FALSE_MSG in test macro to decrease the diff; v3: * rebased with last kunit branch * Please apply this commit from kunit-fixes: 3f37d14b8a3152441f36b6bc74000996679f0998 And these from patchwork: https://patchwork.kernel.org/patch/11676331/ https://patchwork.kernel.org/patch/11676335/ --- lib/Kconfig.debug | 28 ++++++++------ lib/Makefile | 2 +- lib/{test_user_copy.c => user_copy_kunit.c} | 42 +++++++++------------ 3 files changed, 35 insertions(+), 37 deletions(-) rename lib/{test_user_copy.c => user_copy_kunit.c} (91%) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 9ad9210d70a1..f699a3624ae7 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2078,18 +2078,6 @@ config TEST_VMALLOC If unsure, say N. -config TEST_USER_COPY - tristate "Test user/kernel boundary protections" - depends on m - help - This builds the "test_user_copy" module that runs sanity checks - on the copy_to/from_user infrastructure, making sure basic - user/kernel boundary testing is working. If it fails to load, - a regression has been detected in the user/kernel memory boundary - protections. - - If unsure, say N. - config TEST_BPF tristate "Test BPF filter functionality" depends on m && NET @@ -2154,6 +2142,22 @@ config SYSCTL_KUNIT_TEST If unsure, say N. +config USER_COPY_KUNIT + tristate "KUnit Test for user/kernel boundary protections" + depends on KUNIT + depends on m + help + This builds the "user_copy_kunit" module that runs sanity checks + on the copy_to/from_user infrastructure, making sure basic + user/kernel boundary testing is working. If it fails to load, + a regression has been detected in the user/kernel memory boundary + protections. + + For more information on KUnit and unit tests in general please refer + to the KUnit documentation in Documentation/dev-tools/kunit/. + + If unsure, say N. + config LIST_KUNIT_TEST tristate "KUnit Test for Kernel Linked-list structures" if !KUNIT_ALL_TESTS depends on KUNIT diff --git a/lib/Makefile b/lib/Makefile index b1c42c10073b..8c145f85accc 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -78,7 +78,6 @@ obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o obj-$(CONFIG_TEST_OVERFLOW) += test_overflow.o obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o obj-$(CONFIG_TEST_SORT) += test_sort.o -obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o obj-$(CONFIG_TEST_PRINTF) += test_printf.o @@ -318,3 +317,4 @@ obj-$(CONFIG_OBJAGG) += objagg.o # KUnit tests obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o +obj-$(CONFIG_USER_COPY_KUNIT) += user_copy_kunit.o diff --git a/lib/test_user_copy.c b/lib/user_copy_kunit.c similarity index 91% rename from lib/test_user_copy.c rename to lib/user_copy_kunit.c index 5ff04d8fe971..a10ddd15b4cd 100644 --- a/lib/test_user_copy.c +++ b/lib/user_copy_kunit.c @@ -16,6 +16,7 @@ #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/vmalloc.h> +#include <kunit/test.h> /* * Several 32-bit architectures support 64-bit {get,put}_user() calls. @@ -35,7 +36,7 @@ ({ \ int cond = (condition); \ if (cond) \ - pr_warn("[%d] " msg "\n", __LINE__, ##__VA_ARGS__); \ + KUNIT_EXPECT_FALSE_MSG(test, cond, msg, ##__VA_ARGS__); \ cond; \ }) @@ -44,7 +45,7 @@ static bool is_zeroed(void *from, size_t size) return memchr_inv(from, 0x0, size) == NULL; } -static int test_check_nonzero_user(char *kmem, char __user *umem, size_t size) +static int test_check_nonzero_user(struct kunit *test, char *kmem, char __user *umem, size_t size) { int ret = 0; size_t start, end, i, zero_start, zero_end; @@ -102,7 +103,7 @@ static int test_check_nonzero_user(char *kmem, char __user *umem, size_t size) return ret; } -static int test_copy_struct_from_user(char *kmem, char __user *umem, +static int test_copy_struct_from_user(struct kunit *test, char *kmem, char __user *umem, size_t size) { int ret = 0; @@ -177,7 +178,7 @@ static int test_copy_struct_from_user(char *kmem, char __user *umem, return ret; } -static int __init test_user_copy_init(void) +static void user_copy_test(struct kunit *test) { int ret = 0; char *kmem; @@ -192,16 +193,14 @@ static int __init test_user_copy_init(void) #endif kmem = kmalloc(PAGE_SIZE * 2, GFP_KERNEL); - if (!kmem) - return -ENOMEM; + KUNIT_EXPECT_FALSE_MSG(test, kmem == NULL, "kmalloc failed"); user_addr = vm_mmap(NULL, 0, PAGE_SIZE * 2, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS | MAP_PRIVATE, 0); if (user_addr >= (unsigned long)(TASK_SIZE)) { - pr_warn("Failed to allocate user memory\n"); kfree(kmem); - return -ENOMEM; + KUNIT_FAIL(test, "Failed to allocate user memory"); } usermem = (char __user *)user_addr; @@ -245,9 +244,9 @@ static int __init test_user_copy_init(void) #undef test_legit /* Test usage of check_nonzero_user(). */ - ret |= test_check_nonzero_user(kmem, usermem, 2 * PAGE_SIZE); + ret |= test_check_nonzero_user(test, kmem, usermem, 2 * PAGE_SIZE); /* Test usage of copy_struct_from_user(). */ - ret |= test_copy_struct_from_user(kmem, usermem, 2 * PAGE_SIZE); + ret |= test_copy_struct_from_user(test, kmem, usermem, 2 * PAGE_SIZE); /* * Invalid usage: none of these copies should succeed. @@ -309,23 +308,18 @@ static int __init test_user_copy_init(void) vm_munmap(user_addr, PAGE_SIZE * 2); kfree(kmem); - - if (ret == 0) { - pr_info("tests passed.\n"); - return 0; - } - - return -EINVAL; } -module_init(test_user_copy_init); - -static void __exit test_user_copy_exit(void) -{ - pr_info("unloaded.\n"); -} +static struct kunit_case user_copy_test_cases[] = { + KUNIT_CASE(user_copy_test), + {} +}; -module_exit(test_user_copy_exit); +static struct kunit_suite user_copy_test_suite = { + .name = "user_copy", + .test_cases = user_copy_test_cases, +}; +kunit_test_suites(&user_copy_test_suite); MODULE_AUTHOR("Kees Cook <keescook(a)chromium.org>"); MODULE_LICENSE("GPL"); base-commit: d43c7fb05765152d4d4a39a8ef957c4ea14d8847 -- 2.26.2

1 month, 1 week

4
11
0 0

[PATCH bpf-next 0/4] selftests/bpf: convert three other cgroup tests to test_progs

by Alexis Lothoré (eBPF Foundation)

Hello, this series brings a new set of test converted to the test_progs framework. Since the tests are quite small, I chose to group three tests conversion in the same series, but feel free to let me know if I should keep one series per test. The series focuses on cgroup testing and converts the following tests: - get_cgroup_id_user - cgroup_storage - test_skb_cgroup_id_user Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore(a)bootlin.com> --- Alexis Lothoré (eBPF Foundation) (4): selftests/bpf: convert get_current_cgroup_id_user to test_progs selftests/bpf: convert test_cgroup_storage to test_progs selftests/bpf: add proper section name to bpf prog and rename it selftests/bpf: convert test_skb_cgroup_id_user to test_progs tools/testing/selftests/bpf/.gitignore | 3 - tools/testing/selftests/bpf/Makefile | 8 +- tools/testing/selftests/bpf/get_cgroup_id_user.c | 151 ----------------- .../selftests/bpf/prog_tests/cgroup_ancestor.c | 159 ++++++++++++++++++ .../bpf/prog_tests/cgroup_get_current_cgroup_id.c | 58 +++++++ .../selftests/bpf/prog_tests/cgroup_storage.c | 65 ++++++++ ...test_skb_cgroup_id_kern.c => cgroup_ancestor.c} | 2 +- tools/testing/selftests/bpf/progs/cgroup_storage.c | 24 +++ tools/testing/selftests/bpf/test_cgroup_storage.c | 174 -------------------- tools/testing/selftests/bpf/test_skb_cgroup_id.sh | 63 ------- .../selftests/bpf/test_skb_cgroup_id_user.c | 183 --------------------- 11 files changed, 309 insertions(+), 581 deletions(-) --- base-commit: 0e2eaf4b33f65e904b69bae6b956f3f610dbba9a change-id: 20240725-convert_cgroup_tests-d07c66053225 Best regards, -- Alexis Lothoré, Bootlin Embedded Linux and Kernel engineering https://bootlin.com

1 month, 1 week

3
18
0 0

[PATCH] kunit: Device wrappers should also manage driver name

by David Gow

kunit_driver_create() accepts a name for the driver, but does not copy it, so if that name is either on the stack, or otherwise freed, we end up with a use-after-free when the driver is cleaned up. Instead, strdup() the name, and manage it as another KUnit allocation. As there was no existing kunit_kstrdup(), we add one. Further, add a kunit_ variant of strdup_const() and kfree_const(), so we don't need to allocate and manage the string in the majority of cases where it's a constant. This fixes a KASAN splat with overflow.overflow_allocation_test, when built as a module. Fixes: d03c720e03bd ("kunit: Add APIs for managing devices") Reported-by: Nico Pache <npache(a)redhat.com> Closes: https://groups.google.com/g/kunit-dev/c/81V9b9QYON0 Signed-off-by: David Gow <davidgow(a)google.com> Reviewed-by: Kees Cook <kees(a)kernel.org> --- There's some more serious changes since the RFC I sent, so please take a closer look. Thanks, -- David Changes since RFC: https://groups.google.com/g/kunit-dev/c/81V9b9QYON0/m/PFKNKDKAAAAJ - Add and use the kunit_kstrdup_const() and kunit_free_const() functions. - Fix a typo in the doc comments. --- include/kunit/test.h | 58 ++++++++++++++++++++++++++++++++++++++++++++ lib/kunit/device.c | 7 ++++-- 2 files changed, 63 insertions(+), 2 deletions(-) diff --git a/include/kunit/test.h b/include/kunit/test.h index e2a1f0928e8b..da9e84de14c0 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -28,6 +28,7 @@ #include <linux/types.h> #include <asm/rwonce.h> +#include <asm/sections.h> /* Static key: true if any KUnit tests are currently running */ DECLARE_STATIC_KEY_FALSE(kunit_running); @@ -480,6 +481,63 @@ static inline void *kunit_kcalloc(struct kunit *test, size_t n, size_t size, gfp return kunit_kmalloc_array(test, n, size, gfp | __GFP_ZERO); } + +/** + * kunit_kfree_const() - conditionally free test managed memory + * @x: pointer to the memory + * + * Calls kunit_kfree() only if @x is not in .rodata section. + * See kunit_kstrdup_const() for more information. + */ +static inline void kunit_kfree_const(struct kunit *test, const void *x) +{ + if (!is_kernel_rodata((unsigned long)x)) + kunit_kfree(test, x); +} + +/** + * kunit_kstrdup() - Duplicates a string into a test managed allocation. + * + * @test: The test context object. + * @str: The NULL-terminated string to duplicate. + * @gfp: flags passed to underlying kmalloc(). + * + * See kstrdup() and kunit_kmalloc_array() for more information. + */ +static inline char *kunit_kstrdup(struct kunit *test, const char *str, gfp_t gfp) +{ + size_t len; + char *buf; + + if (!str) + return NULL; + + len = strlen(str) + 1; + buf = kunit_kmalloc(test, len, gfp); + if (buf) + memcpy(buf, str, len); + return buf; +} + +/** + * kunit_kstrdup_const() - Conditionally duplicates a string into a test managed allocation. + * + * @test: The test context object. + * @str: The NULL-terminated string to duplicate. + * @gfp: flags passed to underlying kmalloc(). + * + * Calls kunit_kstrdup() only if @str is not in the rodata section. Must be freed with + * kunit_free_const() -- not kunit_free(). + * See kstrdup_const() and kunit_kmalloc_array() for more information. + */ +static inline const char *kunit_kstrdup_const(struct kunit *test, const char *str, gfp_t gfp) +{ + if (is_kernel_rodata((unsigned long)str)) + return str; + + return kunit_kstrdup(test, str, gfp); +} + /** * kunit_vm_mmap() - Allocate KUnit-tracked vm_mmap() area * @test: The test context object. diff --git a/lib/kunit/device.c b/lib/kunit/device.c index 25c81ed465fb..520c1fccee8a 100644 --- a/lib/kunit/device.c +++ b/lib/kunit/device.c @@ -89,7 +89,7 @@ struct device_driver *kunit_driver_create(struct kunit *test, const char *name) if (!driver) return ERR_PTR(err); - driver->name = name; + driver->name = kunit_kstrdup_const(test, name, GFP_KERNEL); driver->bus = &kunit_bus_type; driver->owner = THIS_MODULE; @@ -192,8 +192,11 @@ void kunit_device_unregister(struct kunit *test, struct device *dev) const struct device_driver *driver = to_kunit_device(dev)->driver; kunit_release_action(test, device_unregister_wrapper, dev); - if (driver) + if (driver) { + const char *driver_name = driver->name; kunit_release_action(test, driver_unregister_wrapper, (void *)driver); + kunit_kfree_const(test, driver_name); + } } EXPORT_SYMBOL_GPL(kunit_device_unregister); -- 2.46.0.rc1.232.g9752f9e123-goog

1 month, 1 week

4
4
0 0

[PATCH RFC 0/5] mm/gup: Introduce exclusive GUP pinning

by Elliot Berman

In arm64 pKVM and QuIC's Gunyah protected VM model, we want to support grabbing shmem user pages instead of using KVM's guestmemfd. These hypervisors provide a different isolation model than the CoCo implementations from x86. KVM's guest_memfd is focused on providing memory that is more isolated than AVF requires. Some specific examples include ability to pre-load data onto guest-private pages, dynamically sharing/isolating guest pages without copy, and (future) migrating guest-private pages. In sum of those differences after a discussion in [1] and at PUCK, we want to try to stick with existing shmem and extend GUP to support the isolation needs for arm64 pKVM and Gunyah. To that end, we introduce the concept of "exclusive GUP pinning", which enforces that only one pin of any kind is allowed when using the FOLL_EXCLUSIVE flag is set. This behavior doesn't affect FOLL_GET or any other folio refcount operations that don't go through the FOLL_PIN path. [1]: https://lore.kernel.org/all/20240319143119.GA2736@willie-the-truck/ Tree with patches at: https://git.codelinaro.org/clo/linux-kernel/gunyah-linux/-/tree/sent/exclus… anup(a)brainfault.org, paul.walmsley(a)sifive.com, palmer(a)dabbelt.com, aou(a)eecs.berkeley.edu, seanjc(a)google.com, viro(a)zeniv.linux.org.uk, brauner(a)kernel.org, willy(a)infradead.org, akpm(a)linux-foundation.org, xiaoyao.li(a)intel.com, yilun.xu(a)intel.com, chao.p.peng(a)linux.intel.com, jarkko(a)kernel.org, amoorthy(a)google.com, dmatlack(a)google.com, yu.c.zhang(a)linux.intel.com, isaku.yamahata(a)intel.com, mic(a)digikod.net, vbabka(a)suse.cz, vannapurve(a)google.com, ackerleytng(a)google.com, mail(a)maciej.szmigiero.name, david(a)redhat.com, michael.roth(a)amd.com, wei.w.wang(a)intel.com, liam.merwick(a)oracle.com, isaku.yamahata(a)gmail.com, kirill.shutemov(a)linux.intel.com, suzuki.poulose(a)arm.com, steven.price(a)arm.com, quic_eberman(a)quicinc.com, quic_mnalajal(a)quicinc.com, quic_tsoni(a)quicinc.com, quic_svaddagi(a)quicinc.com, quic_cvanscha(a)quicinc.com, quic_pderrin(a)quicinc.com, quic_pheragu(a)quicinc.com, catalin.marinas(a)arm.com, james.morse(a)arm.com, yuzenghui(a)huawei.com, oliver.upton(a)linux.dev, maz(a)kernel.org, will(a)kernel.org, qperret(a)google.com, keirf(a)google.com, tabba(a)google.com Signed-off-by: Elliot Berman <quic_eberman(a)quicinc.com> --- Elliot Berman (2): mm/gup-test: Verify exclusive pinned mm/gup_test: Verify GUP grabs same pages twice Fuad Tabba (3): mm/gup: Move GUP_PIN_COUNTING_BIAS to page_ref.h mm/gup: Add an option for obtaining an exclusive pin mm/gup: Add support for re-pinning a normal pinned page as exclusive include/linux/mm.h | 57 ++++---- include/linux/mm_types.h | 2 + include/linux/page_ref.h | 74 ++++++++++ mm/Kconfig | 5 + mm/gup.c | 265 ++++++++++++++++++++++++++++++---- mm/gup_test.c | 108 ++++++++++++++ mm/gup_test.h | 1 + tools/testing/selftests/mm/gup_test.c | 5 +- 8 files changed, 457 insertions(+), 60 deletions(-) --- base-commit: 6ba59ff4227927d3a8530fc2973b80e94b54d58f change-id: 20240509-exclusive-gup-66259138bbff Best regards, -- Elliot Berman <quic_eberman(a)quicinc.com>

1 month, 1 week

13
68
0 0

[PATCH net-next] selftests: net: py: support verbose printing, display executed commands

by Mohsin Bashir

Add verbosity support to show the commands executed while running tests. Enable verbosity if either an environment variable 'VERBOSE' is set to a non-zero number or it is defined in a config file under driver tests as discussed here: https://github.com/linux-netdev/nipa/wiki/Running-driver-tests. Signed-off-by: Mohsin Bashir <mohsin.bashr(a)gmail.com> --- tools/testing/selftests/drivers/net/lib/py/env.py | 14 +++++++++++++- tools/testing/selftests/net/lib/py/__init__.py | 7 +++++++ tools/testing/selftests/net/lib/py/utils.py | 14 ++++++++++++++ 3 files changed, 34 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/lib/py/env.py b/tools/testing/selftests/drivers/net/lib/py/env.py index a5e800b8f103..ec53cf59e104 100644 --- a/tools/testing/selftests/drivers/net/lib/py/env.py +++ b/tools/testing/selftests/drivers/net/lib/py/env.py @@ -4,7 +4,7 @@ import os import time from pathlib import Path from lib.py import KsftSkipEx, KsftXfailEx -from lib.py import cmd, ethtool, ip +from lib.py import cmd, ethtool, ip, verbosity_ctl from lib.py import NetNS, NetdevSimDev from .remote import Remote @@ -42,6 +42,12 @@ class NetDrvEnv: self.env = _load_env_file(src_path) + try: + verbosity_ctl(level=int(self.env.get('VERBOSE', 0))) + except ValueError as e: + print(f'Ignoring \'VERBOSE\'. Unknown value \'{self.env.get("VERBOSE")}\'') + verbosity_ctl(level=0) + if 'NETIF' in self.env: self.dev = ip("link show dev " + self.env['NETIF'], json=True)[0] else: @@ -92,6 +98,12 @@ class NetDrvEpEnv: self._ns = None self._ns_peer = None + try: + verbosity_ctl(level=int(self.env.get('VERBOSE', 0))) + except ValueError as e: + print(f'Ignoring \'VERBOSE\'. Unknown value \'{self.env.get("VERBOSE")}\'') + verbosity_ctl(level=0) + if "NETIF" in self.env: if nsim_test is True: raise KsftXfailEx("Test only works on netdevsim") diff --git a/tools/testing/selftests/net/lib/py/__init__.py b/tools/testing/selftests/net/lib/py/__init__.py index b6d498d125fe..1541079fadce 100644 --- a/tools/testing/selftests/net/lib/py/__init__.py +++ b/tools/testing/selftests/net/lib/py/__init__.py @@ -1,8 +1,15 @@ # SPDX-License-Identifier: GPL-2.0 +import os from .consts import KSRC from .ksft import * from .netns import NetNS from .nsim import * from .utils import * from .ynl import NlError, YnlFamily, EthtoolFamily, NetdevFamily, RtnlFamily + +try: + verbosity_ctl(level=int(os.environ.get('VERBOSE', 0))) +except ValueError as e: + print(f'Ignoring \'VERBOSE\'. Unknown value \'{os.environ.get("VERBOSE")}\'') + verbosity_ctl(level=0) diff --git a/tools/testing/selftests/net/lib/py/utils.py b/tools/testing/selftests/net/lib/py/utils.py index 72590c3f90f1..4a59958649be 100644 --- a/tools/testing/selftests/net/lib/py/utils.py +++ b/tools/testing/selftests/net/lib/py/utils.py @@ -9,6 +9,18 @@ import subprocess import time +def verbosity_ctl(level=None): + global VERBOSITY_LEVEL + if level is not None: + VERBOSITY_LEVEL = level + return VERBOSITY_LEVEL + + +def verbose(*objs, **kwargs): + if verbosity_ctl() >= 1: + print(*objs, **kwargs) + + class CmdExitFailure(Exception): pass @@ -22,6 +34,8 @@ class cmd: self.stderr = None self.ret = None + verbose("#cmd|", comm) + self.comm = comm if host: self.proc = host.cmd(comm) -- 2.43.0

1 month, 1 week

2
3
0 0

[PATCH 00/12] tools/nolibc: improve LLVM/clang support

by Thomas Weißschuh

The current support for LLVM and clang in nolibc and its testsuite is very limited. * Various architectures plain do not compile * The user *has* to specify "-Os" otherwise the program crashes * Cross-compilation of the tests does not work * Using clang is not wired up in run-tests.sh This series extends this support. Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net> --- Thomas Weißschuh (12): tools/nolibc: use clang-compatible asm syntax in arch-arm.h tools/nolibc: limit powerpc stack-protector workaround to GCC tools/nolibc: move entrypoint specifics to compiler.h tools/nolibc: use attribute((naked)) if available selftests/nolibc: report failure if no testcase passed selftests/nolibc: avoid passing NULL to printf("%s") selftests/nolibc: determine $(srctree) first selftests/nolibc: setup objtree without Makefile.include selftests/nolibc: add support for LLVM= parameter selftests/nolibc: add cc-option compatible with clang cross builds selftests/nolibc: run-tests.sh: avoid overwriting CFLAGS_EXTRA selftests/nolibc: run-tests.sh: allow building through LLVM tools/include/nolibc/arch-aarch64.h | 4 ++-- tools/include/nolibc/arch-arm.h | 8 ++++---- tools/include/nolibc/arch-i386.h | 4 ++-- tools/include/nolibc/arch-loongarch.h | 4 ++-- tools/include/nolibc/arch-mips.h | 4 ++-- tools/include/nolibc/arch-powerpc.h | 6 +++--- tools/include/nolibc/arch-riscv.h | 4 ++-- tools/include/nolibc/arch-s390.h | 4 ++-- tools/include/nolibc/arch-x86_64.h | 4 ++-- tools/include/nolibc/compiler.h | 12 ++++++++++++ tools/testing/selftests/nolibc/Makefile | 27 ++++++++++++++++----------- tools/testing/selftests/nolibc/nolibc-test.c | 4 ++-- tools/testing/selftests/nolibc/run-tests.sh | 20 ++++++++++++++++---- 13 files changed, 67 insertions(+), 38 deletions(-) --- base-commit: 0db287736bc586fcd5a2925518ef09eec6924803 change-id: 20240727-nolibc-llvm-3fad68590d4c Best regards, -- Thomas Weißschuh <linux(a)weissschuh.net>

1 month, 1 week

4
28
0 0

[PATCH] tools/nolibc: pass argc, argv and envp to constructors

by Thomas Weißschuh

Mirror glibc behavior for compatibility. Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net> --- tools/include/nolibc/crt.h | 23 ++++++++++++----------- tools/testing/selftests/nolibc/nolibc-test.c | 5 +++-- 2 files changed, 15 insertions(+), 13 deletions(-) diff --git a/tools/include/nolibc/crt.h b/tools/include/nolibc/crt.h index 43b551468c2a..ac291574f6c0 100644 --- a/tools/include/nolibc/crt.h +++ b/tools/include/nolibc/crt.h @@ -13,11 +13,11 @@ const unsigned long *_auxv __attribute__((weak)); static void __stack_chk_init(void); static void exit(int); -extern void (*const __preinit_array_start[])(void) __attribute__((weak)); -extern void (*const __preinit_array_end[])(void) __attribute__((weak)); +extern void (*const __preinit_array_start[])(int, char **, char**) __attribute__((weak)); +extern void (*const __preinit_array_end[])(int, char **, char**) __attribute__((weak)); -extern void (*const __init_array_start[])(void) __attribute__((weak)); -extern void (*const __init_array_end[])(void) __attribute__((weak)); +extern void (*const __init_array_start[])(int, char **, char**) __attribute__((weak)); +extern void (*const __init_array_end[])(int, char **, char**) __attribute__((weak)); extern void (*const __fini_array_start[])(void) __attribute__((weak)); extern void (*const __fini_array_end[])(void) __attribute__((weak)); @@ -29,7 +29,8 @@ void _start_c(long *sp) char **argv; char **envp; int exitcode; - void (* const *func)(void); + void (* const *ctor_func)(int, char **, char **); + void (* const *dtor_func)(void); const unsigned long *auxv; /* silence potential warning: conflicting types for 'main' */ int _nolibc_main(int, char **, char **) __asm__ ("main"); @@ -66,16 +67,16 @@ void _start_c(long *sp) ; _auxv = auxv; - for (func = __preinit_array_start; func < __preinit_array_end; func++) - (*func)(); - for (func = __init_array_start; func < __init_array_end; func++) - (*func)(); + for (ctor_func = __preinit_array_start; ctor_func < __preinit_array_end; ctor_func++) + (*ctor_func)(argc, argv, envp); + for (ctor_func = __init_array_start; ctor_func < __init_array_end; ctor_func++) + (*ctor_func)(argc, argv, envp); /* go to application */ exitcode = _nolibc_main(argc, argv, envp); - for (func = __fini_array_end; func > __fini_array_start;) - (*--func)(); + for (dtor_func = __fini_array_end; dtor_func > __fini_array_start;) + (*--dtor_func)(); exit(exitcode); } diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c index 093d0512f4c5..0800b10fc3f7 100644 --- a/tools/testing/selftests/nolibc/nolibc-test.c +++ b/tools/testing/selftests/nolibc/nolibc-test.c @@ -686,9 +686,10 @@ static void constructor1(void) } __attribute__((constructor)) -static void constructor2(void) +static void constructor2(int argc, char **argv, char **envp) { - constructor_test_value *= 2; + if (argc && argv && envp) + constructor_test_value *= 2; } int run_startup(int min, int max) --- base-commit: 0db287736bc586fcd5a2925518ef09eec6924803 change-id: 20240728-nolibc-constructor-args-68bf56ff7438 Best regards, -- Thomas Weißschuh <linux(a)weissschuh.net>

1 month, 1 week

3
2
0 0

[PATCH 0/2] tools/nolibc: add support for [v]sscanf()

by Thomas Weißschuh

The implementation is limited and only supports numeric arguments. Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net> --- Thomas Weißschuh (2): tools/nolibc: add support for [v]sscanf() Revert "selftests: kselftest: Fix build failure with NOLIBC" tools/include/nolibc/stdio.h | 93 ++++++++++++++++++++++++++++ tools/testing/selftests/kselftest.h | 5 -- tools/testing/selftests/nolibc/nolibc-test.c | 59 ++++++++++++++++++ 3 files changed, 152 insertions(+), 5 deletions(-) --- base-commit: ae1f550efc11eaf1496c431d9c6e784cb49124c5 change-id: 20240414-nolibc-scanf-f1db6930d0c6 Best regards, -- Thomas Weißschuh <linux(a)weissschuh.net>

1 month, 1 week

3
7
0 0

2024

2023

2022

2021

2020

2019

2018

2017

Linux-kselftest-mirror July 2024