- Linux-kselftest-mirror - lists.linaro.org

[PATCH] PMCR_EL0.N is RAZ/WI. At least a build failes in Ubuntu 22.04 LTS. Remove the set function.

by Itaru Kitayama

Signed-off-by: Itaru Kitayama <itaru.kitayama(a)fujitsu.com> --- Seen a build failure with old Ubuntu 22.04 LTS, while the latest release has no build issue, a write to the bit fields is RAZ/WI, remove the function. --- tools/testing/selftests/kvm/arm64/vpmu_counter_access.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/tools/testing/selftests/kvm/arm64/vpmu_counter_access.c b/tools/testing/selftests/kvm/arm64/vpmu_counter_access.c index f16b3b27e32ed7ca57481f27d689d47783aa0345..56214a4430be90b3e1d840f2719b22dd44f0b49b 100644 --- a/tools/testing/selftests/kvm/arm64/vpmu_counter_access.c +++ b/tools/testing/selftests/kvm/arm64/vpmu_counter_access.c @@ -45,11 +45,6 @@ static uint64_t get_pmcr_n(uint64_t pmcr) return FIELD_GET(ARMV8_PMU_PMCR_N, pmcr); } -static void set_pmcr_n(uint64_t *pmcr, uint64_t pmcr_n) -{ - u64p_replace_bits((__u64 *) pmcr, pmcr_n, ARMV8_PMU_PMCR_N); -} - static uint64_t get_counters_mask(uint64_t n) { uint64_t mask = BIT(ARMV8_PMU_CYCLE_IDX); @@ -490,7 +485,6 @@ static void test_create_vpmu_vm_with_pmcr_n(uint64_t pmcr_n, bool expect_fail) * Setting a larger value of PMCR.N should not modify the field, and * return a success. */ - set_pmcr_n(&pmcr, pmcr_n); vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0), pmcr); pmcr = vcpu_get_reg(vcpu, KVM_ARM64_SYS_REG(SYS_PMCR_EL0)); --- base-commit: aae5a9834b388860844b294c70c8770dd26e528c change-id: 20250912-selftest-fix3-27f285e79d82 Best regards, -- Itaru Kitayama <itaru.kitayama(a)linux.dev>

2 months

3
6
0 0

[PATCH v3 1/1] selftests/mm: skip soft-dirty tests when CONFIG_MEM_SOFT_DIRTY is disabled

by Lance Yang

From: Lance Yang <lance.yang(a)linux.dev> The madv_populate and soft-dirty kselftests currently fail on systems where CONFIG_MEM_SOFT_DIRTY is disabled. Introduce a new helper softdirty_supported() into vm_util.c/h to ensure tests are properly skipped when the feature is not enabled. Acked-by: David Hildenbrand <david(a)redhat.com> Suggested-by: David Hildenbrand <david(a)redhat.com> Signed-off-by: Lance Yang <lance.yang(a)linux.dev> --- v2 -> v3: - Optimize softdirty_supported() by directly assigning check_vmflag() result (per David) - Pick AB from David - thanks! - https://lore.kernel.org/lkml/20250917122750.36608-1-lance.yang@linux.dev v1 -> v2: - Rename softdirty_is_supported() to softdirty_supported() (per David) - Drop aarch64 specific handling (per David) - https://lore.kernel.org/lkml/20250917055913.49759-1-lance.yang@linux.dev tools/testing/selftests/mm/madv_populate.c | 21 ++------------------- tools/testing/selftests/mm/soft-dirty.c | 5 ++++- tools/testing/selftests/mm/vm_util.c | 17 +++++++++++++++++ tools/testing/selftests/mm/vm_util.h | 1 + 4 files changed, 24 insertions(+), 20 deletions(-) diff --git a/tools/testing/selftests/mm/madv_populate.c b/tools/testing/selftests/mm/madv_populate.c index b6fabd5c27ed..d8d11bc67ddc 100644 --- a/tools/testing/selftests/mm/madv_populate.c +++ b/tools/testing/selftests/mm/madv_populate.c @@ -264,23 +264,6 @@ static void test_softdirty(void) munmap(addr, SIZE); } -static int system_has_softdirty(void) -{ - /* - * There is no way to check if the kernel supports soft-dirty, other - * than by writing to a page and seeing if the bit was set. But the - * tests are intended to check that the bit gets set when it should, so - * doing that check would turn a potentially legitimate fail into a - * skip. Fortunately, we know for sure that arm64 does not support - * soft-dirty. So for now, let's just use the arch as a corse guide. - */ -#if defined(__aarch64__) - return 0; -#else - return 1; -#endif -} - int main(int argc, char **argv) { int nr_tests = 16; @@ -288,7 +271,7 @@ int main(int argc, char **argv) pagesize = getpagesize(); - if (system_has_softdirty()) + if (softdirty_supported()) nr_tests += 5; ksft_print_header(); @@ -300,7 +283,7 @@ int main(int argc, char **argv) test_holes(); test_populate_read(); test_populate_write(); - if (system_has_softdirty()) + if (softdirty_supported()) test_softdirty(); err = ksft_get_fail_cnt(); diff --git a/tools/testing/selftests/mm/soft-dirty.c b/tools/testing/selftests/mm/soft-dirty.c index 8a3f2b4b2186..4ee4db3750c1 100644 --- a/tools/testing/selftests/mm/soft-dirty.c +++ b/tools/testing/selftests/mm/soft-dirty.c @@ -200,8 +200,11 @@ int main(int argc, char **argv) int pagesize; ksft_print_header(); - ksft_set_plan(15); + if (!softdirty_supported()) + ksft_exit_skip("soft-dirty is not support\n"); + + ksft_set_plan(15); pagemap_fd = open(PAGEMAP_FILE_PATH, O_RDONLY); if (pagemap_fd < 0) ksft_exit_fail_msg("Failed to open %s\n", PAGEMAP_FILE_PATH); diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c index 56e9bd541edd..e33cda301dad 100644 --- a/tools/testing/selftests/mm/vm_util.c +++ b/tools/testing/selftests/mm/vm_util.c @@ -449,6 +449,23 @@ bool check_vmflag_pfnmap(void *addr) return check_vmflag(addr, "pf"); } +bool softdirty_supported(void) +{ + char *addr; + bool supported = false; + const size_t pagesize = getpagesize(); + + /* New mappings are expected to be marked with VM_SOFTDIRTY (sd). */ + addr = mmap(0, pagesize, PROT_READ | PROT_WRITE, + MAP_ANONYMOUS | MAP_PRIVATE, 0, 0); + if (!addr) + ksft_exit_fail_msg("mmap failed\n"); + + supported = check_vmflag(addr, "sd"); + munmap(addr, pagesize); + return supported; +} + /* * Open an fd at /proc/$pid/maps and configure procmap_out ready for * PROCMAP_QUERY query. Returns 0 on success, or an error code otherwise. diff --git a/tools/testing/selftests/mm/vm_util.h b/tools/testing/selftests/mm/vm_util.h index 07c4acfd84b6..26c30fdc0241 100644 --- a/tools/testing/selftests/mm/vm_util.h +++ b/tools/testing/selftests/mm/vm_util.h @@ -104,6 +104,7 @@ bool find_vma_procmap(struct procmap_fd *procmap, void *address); int close_procmap(struct procmap_fd *procmap); int write_sysfs(const char *file_path, unsigned long val); int read_sysfs(const char *file_path, unsigned long *val); +bool softdirty_supported(void); static inline int open_self_procmap(struct procmap_fd *procmap_out) { -- 2.49.0

2 months

2
2
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[PATCH 0/3] selftests: ublk: kublk: fix feature list

by Uday Shankar

This patch simplifies kublk's implementation of the feature list command, fixes a bug where a feature was missing, and adds a test to ensure that similar bugs do not happen in the future. Signed-off-by: Uday Shankar <ushankar(a)purestorage.com> --- Uday Shankar (3): selftests: ublk: kublk: simplify feat_map definition selftests: ublk: kublk: add UBLK_F_BUF_REG_OFF_DAEMON to feat_map selftests: ublk: add test to verify that feat_map is complete tools/testing/selftests/ublk/Makefile | 1 + tools/testing/selftests/ublk/kublk.c | 32 +++++++++++++------------ tools/testing/selftests/ublk/test_generic_13.sh | 16 +++++++++++++ 3 files changed, 34 insertions(+), 15 deletions(-) --- base-commit: da7b97ba0d219a14a83e9cc93f98b53939f12944 change-id: 20250916-ublk_features-07af4e321e5a Best regards, -- Uday Shankar <ushankar(a)purestorage.com>

2 months

2
8
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[PATCHv4 net 1/2] bonding: don't set oif to bond dev when getting NS target destination

by Hangbin Liu

Unlike IPv4, IPv6 routing strictly requires the source address to be valid on the outgoing interface. If the NS target is set to a remote VLAN interface, and the source address is also configured on a VLAN over a bond interface, setting the oif to the bond device will fail to retrieve the correct destination route. Fix this by not setting the oif to the bond device when retrieving the NS target destination. This allows the correct destination device (the VLAN interface) to be determined, so that bond_verify_device_path can return the proper VLAN tags for sending NS messages. Reported-by: David Wilder <wilder(a)us.ibm.com> Closes: https://lore.kernel.org/netdev/aGOKggdfjv0cApTO@fedora/ Suggested-by: Jay Vosburgh <jv(a)jvosburgh.net> Tested-by: David Wilder <wilder(a)us.ibm.com> Acked-by: Jay Vosburgh <jv(a)jvosburgh.net> Fixes: 4e24be018eb9 ("bonding: add new parameter ns_targets") Signed-off-by: Hangbin Liu <liuhangbin(a)gmail.com> --- v4: rebase to latest net v3: no update v2: split the patch into 2 parts, the kernel change and test update (Jay Vosburgh) --- drivers/net/bonding/bond_main.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 8832bc9f107b..57be04f6cb11 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -3356,7 +3356,6 @@ static void bond_ns_send_all(struct bonding *bond, struct slave *slave) /* Find out through which dev should the packet go */ memset(&fl6, 0, sizeof(struct flowi6)); fl6.daddr = targets[i]; - fl6.flowi6_oif = bond->dev->ifindex; dst = ip6_route_output(dev_net(bond->dev), NULL, &fl6); if (dst->error) { -- 2.50.1

2 months

2
2
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[PATCH v3 00/15] selftests/futex: Refactor tests to use kselftest_harness.h

by André Almeida

This patch series refactors all futex selftests to use kselftest_harness.h instead of futex's logging.h, as discussed here [1]. This allows to remove a lot of boilerplate code and to simplify some parts of the test logic, mainly when the test needs to exit early. The result of this is more than 500 lines removed from tools/testing/selftests/futex/. Also, this enables new tests to use kselftest.h features like ASSERT_s and such. There are some caveats around this refactor: - logging.h had verbosity levels, while kselftest_harness.h doesn't. I created a new print function called ksft_print_dbg_msg() that prints the message if the user uses the -d flag, so now there's an equivalent of this feature. - futex_requeue_pi test accepted command line arguments to be used as test parameters (e.g. ./futex_requeue_pi -b -l -t 500000). This doesn't work with kselftest_harness.h because there's no straightforward way to send command line arguments to the test. I used FIXTURE_VARIANT() to achieve the same result, but now the parameters live inside of the test file, instead of on functional/run.sh. This increased a little bit the number of test cases for futex_requeue_pi, from 22 to 24. Although there are a lot of patches, they follow a simple pattern: - The usage() function, options parsing, kseftest setup (ksft_print_header(), ksft_set_plan(), ksft_print_cnts()), are all gone - info() is replaced with ksft_print_dbg_msg() - Exit on error paths are replaced with ksft_exit_fail_msg() - fail/pass replaced with their ksft_ equivalents. I have compared the results of run.sh before and after this patchset and didn't find any regression from the test results. Thanks, André [1] https://lore.kernel.org/lkml/87ecv6p364.ffs@tglx/ --- Changes in v3: - Rebased on top of tip/locking/futex - Link to v2: https://lore.kernel.org/r/20250720-tonyk-robust_test_cleanup-v2-0-1f9bcb5b7… Changes in v2: - Rebased on top of tip/master - Dropped priv_hash global test variant now that this feature was dropped - Added include <stdbool.h> in the first patch - Link to v1: https://lore.kernel.org/r/20250704-tonyk-robust_test_cleanup-v1-0-c0ff4f24c… --- André Almeida (15): selftests: kselftest: Create ksft_print_dbg_msg() selftests/futex: Refactor futex_requeue_pi with kselftest_harness.h selftests/futex: Refactor futex_requeue_pi_mismatched_ops with kselftest_harness.h selftests/futex: Refactor futex_requeue_pi_signal_restart with kselftest_harness.h selftests/futex: Refactor futex_wait_timeout with kselftest_harness.h selftests/futex: Refactor futex_wait_wouldblock with kselftest_harness.h selftests/futex: Refactor futex_wait_unitialized_heap with kselftest_harness.h selftests/futex: Refactor futex_wait_private_mapped_file with kselftest_harness.h selftests/futex: Refactor futex_wait with kselftest_harness.h selftests/futex: Refactor futex_requeue with kselftest_harness.h selftests/futex: Refactor futex_waitv with kselftest_harness.h selftests/futex: Refactor futex_priv_hash with kselftest_harness.h selftests/futex: Refactor futex_numa_mpol with kselftest_harness.h selftests/futex: Drop logging.h include from futex_numa selftests/futex: Remove logging.h file tools/testing/selftests/futex/functional/Makefile | 3 +- .../selftests/futex/functional/futex_numa.c | 3 +- .../selftests/futex/functional/futex_numa_mpol.c | 39 +-- .../selftests/futex/functional/futex_priv_hash.c | 48 +--- .../selftests/futex/functional/futex_requeue.c | 76 ++---- .../selftests/futex/functional/futex_requeue_pi.c | 261 ++++++++++----------- .../functional/futex_requeue_pi_mismatched_ops.c | 86 ++----- .../functional/futex_requeue_pi_signal_restart.c | 129 +++------- .../selftests/futex/functional/futex_wait.c | 103 +++----- .../functional/futex_wait_private_mapped_file.c | 83 ++----- .../futex/functional/futex_wait_timeout.c | 139 +++++------ .../functional/futex_wait_uninitialized_heap.c | 76 ++---- .../futex/functional/futex_wait_wouldblock.c | 75 ++---- .../selftests/futex/functional/futex_waitv.c | 98 ++++---- tools/testing/selftests/futex/functional/run.sh | 61 +---- tools/testing/selftests/futex/include/logging.h | 148 ------------ tools/testing/selftests/kselftest.h | 14 ++ tools/testing/selftests/kselftest_harness.h | 13 +- 18 files changed, 456 insertions(+), 999 deletions(-) --- base-commit: ed323aeda5e09fa1ab95946673939c8c425c329c change-id: 20250703-tonyk-robust_test_cleanup-d1f3406365d9 Best regards, -- André Almeida <andrealmeid(a)igalia.com>

2 months

1
15
0 0

[PATCH net v4 0/4] net: netpoll: fix memory leak and add comprehensive selftests

by Breno Leitao

Fix a memory leak in netpoll and introduce netconsole selftests that expose the issue when running with kmemleak detection enabled. This patchset includes a selftest for netpoll with multiple concurrent users (netconsole + bonding), which simulates the scenario from test[1] that originally demonstrated the issue allegedly fixed by commit efa95b01da18 ("netpoll: fix use after free") - a commit that is now being reverted. Sending this to "net" branch because this is a fix, and the selftest might help with the backports validation. Link: https://lore.kernel.org/lkml/96b940137a50e5c387687bb4f57de8b0435a653f.14048… [1] Signed-off-by: Breno Leitao <leitao(a)debian.org> --- Changes in v4: - Added an additional selftest to test multiple netpoll users in parallel - Link to v3: https://lore.kernel.org/r/20250905-netconsole_torture-v3-0-875c7febd316@deb… Changes in v3: - This patchset is a merge of the fix and the selftest together as recommended by Jakub. Changes in v2: - Reuse the netconsole creation from lib_netcons.sh. Thus, refactoring the create_dynamic_target() (Jakub) - Move the "wait" to after all the messages has been sent. - Link to v1: https://lore.kernel.org/r/20250902-netconsole_torture-v1-1-03c6066598e9@deb… --- Breno Leitao (4): net: netpoll: fix incorrect refcount handling causing incorrect cleanup selftest: netcons: refactor target creation selftest: netcons: create a torture test selftest: netcons: add test for netconsole over bonded interfaces net/core/netpoll.c | 7 +- tools/testing/selftests/drivers/net/Makefile | 2 + .../selftests/drivers/net/lib/sh/lib_netcons.sh | 197 ++++++++++++++++++--- .../selftests/drivers/net/netcons_over_bonding.sh | 76 ++++++++ .../selftests/drivers/net/netcons_torture.sh | 127 +++++++++++++ 5 files changed, 384 insertions(+), 25 deletions(-) --- base-commit: 5e87fdc37f8dc619549d49ba5c951b369ce7c136 change-id: 20250902-netconsole_torture-8fc23f0aca99 Best regards, -- Breno Leitao <leitao(a)debian.org>

2 months

2
6
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[PATCH v2 00/16] selftests: vDSO: parse_vdso: Make compatible with nolibc

by Thomas Weißschuh

For testing the functionality of the vDSO, it is necessary to build userspace programs for multiple different architectures. It is additional work to acquire matching userspace cross-compilers with full C libraries and then building root images out of those. The kernel tree already contains nolibc, a small, header-only C library. By using it, it is possible to build userspace programs without any additional dependencies. For example the kernel.org crosstools or multi-target clang can be used to build test programs for a multitude of architectures. While nolibc is very limited, it is enough for many selftests. With some minor adjustments it is possible to make parse_vdso.c compatible with nolibc. As an example, vdso_standalone_test_x86 is now built from the same C code as the regular vdso_test_gettimeofday, while still being completely standalone. Also drop the dependency of parse_vdso.c on the elf.h header from libc and only use the one from the kernel's UAPI. While this series is useful on its own now, it will also integrate with the kunit UAPI framework currently under development: https://lore.kernel.org/lkml/20250217-kunit-kselftests-v1-0-42b4524c3b0a@li… Signed-off-by: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> --- Changes in v2: - Provide a limits.h header in nolibc - Pick up Reviewed-by tags from Kees - Link to v1: https://lore.kernel.org/r/20250203-parse_vdso-nolibc-v1-0-9cb6268d77be@linu… --- Thomas Weißschuh (16): MAINTAINERS: Add vDSO selftests elf, uapi: Add definition for STN_UNDEF elf, uapi: Add definition for DT_GNU_HASH elf, uapi: Add definitions for VER_FLG_BASE and VER_FLG_WEAK elf, uapi: Add type ElfXX_Versym elf, uapi: Add types ElfXX_Verdef and ElfXX_Veraux tools/include: Add uapi/linux/elf.h selftests: Add headers target tools/nolibc: add limits.h shim header selftests: vDSO: vdso_standalone_test_x86: Use vdso_init_form_sysinfo_ehdr selftests: vDSO: parse_vdso: Drop vdso_init_from_auxv() selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers selftests: vDSO: parse_vdso: Test __SIZEOF_LONG__ instead of ULONG_MAX selftests: vDSO: vdso_test_gettimeofday: Clean up includes selftests: vDSO: vdso_test_gettimeofday: Make compatible with nolibc selftests: vDSO: vdso_standalone_test_x86: Switch to nolibc MAINTAINERS | 1 + include/uapi/linux/elf.h | 38 ++ tools/include/nolibc/Makefile | 1 + tools/include/nolibc/limits.h | 7 + tools/include/uapi/linux/elf.h | 524 +++++++++++++++++++++ tools/testing/selftests/lib.mk | 5 +- tools/testing/selftests/vDSO/Makefile | 11 +- tools/testing/selftests/vDSO/parse_vdso.c | 19 +- tools/testing/selftests/vDSO/parse_vdso.h | 1 - .../selftests/vDSO/vdso_standalone_test_x86.c | 143 +----- .../selftests/vDSO/vdso_test_gettimeofday.c | 4 +- 11 files changed, 590 insertions(+), 164 deletions(-) --- base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b change-id: 20241017-parse_vdso-nolibc-e069baa7ff48 Best regards, -- Thomas Weißschuh <thomas.weissschuh(a)linutronix.de>

2 months

7
42
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[PATCH v2 1/1] selftests/mm: skip soft-dirty tests when CONFIG_MEM_SOFT_DIRTY is disabled

by Lance Yang

From: Lance Yang <lance.yang(a)linux.dev> The madv_populate and soft-dirty kselftests currently fail on systems where CONFIG_MEM_SOFT_DIRTY is disabled. Introduce a new helper softdirty_supported() into vm_util.c/h to ensure tests are properly skipped when the feature is not enabled. Signed-off-by: Lance Yang <lance.yang(a)linux.dev> --- v1 -> v2: - Rename softdirty_is_supported() to softdirty_supported() (per David) - Drop aarch64 specific handling (per David) - https://lore.kernel.org/lkml/20250917055913.49759-1-lance.yang@linux.dev tools/testing/selftests/mm/madv_populate.c | 21 ++------------------- tools/testing/selftests/mm/soft-dirty.c | 5 ++++- tools/testing/selftests/mm/vm_util.c | 19 +++++++++++++++++++ tools/testing/selftests/mm/vm_util.h | 1 + 4 files changed, 26 insertions(+), 20 deletions(-) diff --git a/tools/testing/selftests/mm/madv_populate.c b/tools/testing/selftests/mm/madv_populate.c index b6fabd5c27ed..d8d11bc67ddc 100644 --- a/tools/testing/selftests/mm/madv_populate.c +++ b/tools/testing/selftests/mm/madv_populate.c @@ -264,23 +264,6 @@ static void test_softdirty(void) munmap(addr, SIZE); } -static int system_has_softdirty(void) -{ - /* - * There is no way to check if the kernel supports soft-dirty, other - * than by writing to a page and seeing if the bit was set. But the - * tests are intended to check that the bit gets set when it should, so - * doing that check would turn a potentially legitimate fail into a - * skip. Fortunately, we know for sure that arm64 does not support - * soft-dirty. So for now, let's just use the arch as a corse guide. - */ -#if defined(__aarch64__) - return 0; -#else - return 1; -#endif -} - int main(int argc, char **argv) { int nr_tests = 16; @@ -288,7 +271,7 @@ int main(int argc, char **argv) pagesize = getpagesize(); - if (system_has_softdirty()) + if (softdirty_supported()) nr_tests += 5; ksft_print_header(); @@ -300,7 +283,7 @@ int main(int argc, char **argv) test_holes(); test_populate_read(); test_populate_write(); - if (system_has_softdirty()) + if (softdirty_supported()) test_softdirty(); err = ksft_get_fail_cnt(); diff --git a/tools/testing/selftests/mm/soft-dirty.c b/tools/testing/selftests/mm/soft-dirty.c index 8a3f2b4b2186..4ee4db3750c1 100644 --- a/tools/testing/selftests/mm/soft-dirty.c +++ b/tools/testing/selftests/mm/soft-dirty.c @@ -200,8 +200,11 @@ int main(int argc, char **argv) int pagesize; ksft_print_header(); - ksft_set_plan(15); + if (!softdirty_supported()) + ksft_exit_skip("soft-dirty is not support\n"); + + ksft_set_plan(15); pagemap_fd = open(PAGEMAP_FILE_PATH, O_RDONLY); if (pagemap_fd < 0) ksft_exit_fail_msg("Failed to open %s\n", PAGEMAP_FILE_PATH); diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c index 56e9bd541edd..ac41d10454a5 100644 --- a/tools/testing/selftests/mm/vm_util.c +++ b/tools/testing/selftests/mm/vm_util.c @@ -449,6 +449,25 @@ bool check_vmflag_pfnmap(void *addr) return check_vmflag(addr, "pf"); } +bool softdirty_supported(void) +{ + char *addr; + bool supported = false; + const size_t pagesize = getpagesize(); + + /* New mappings are expected to be marked with VM_SOFTDIRTY (sd). */ + addr = mmap(0, pagesize, PROT_READ | PROT_WRITE, + MAP_ANONYMOUS | MAP_PRIVATE, 0, 0); + if (!addr) + ksft_exit_fail_msg("mmap failed\n"); + + if (check_vmflag(addr, "sd")) + supported = true; + + munmap(addr, pagesize); + return supported; +} + /* * Open an fd at /proc/$pid/maps and configure procmap_out ready for * PROCMAP_QUERY query. Returns 0 on success, or an error code otherwise. diff --git a/tools/testing/selftests/mm/vm_util.h b/tools/testing/selftests/mm/vm_util.h index 07c4acfd84b6..26c30fdc0241 100644 --- a/tools/testing/selftests/mm/vm_util.h +++ b/tools/testing/selftests/mm/vm_util.h @@ -104,6 +104,7 @@ bool find_vma_procmap(struct procmap_fd *procmap, void *address); int close_procmap(struct procmap_fd *procmap); int write_sysfs(const char *file_path, unsigned long val); int read_sysfs(const char *file_path, unsigned long *val); +bool softdirty_supported(void); static inline int open_self_procmap(struct procmap_fd *procmap_out) { -- 2.49.0

2 months

2
2
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[PATCH RESEND 1/1] selftests/mm: skip soft-dirty tests when CONFIG_MEM_SOFT_DIRTY is disabled

by Lance Yang

From: Lance Yang <lance.yang(a)linux.dev> The madv_populate and soft-dirty kselftests currently fail on systems where CONFIG_MEM_SOFT_DIRTY is disabled. Introduce a new helper softdirty_is_supported() into vm_util.c/h to ensure tests are properly skipped when the feature is not enabled. Suggested-by: David Hildenbrand <david(a)redhat.com> Signed-off-by: Lance Yang <lance.yang(a)linux.dev> --- tools/testing/selftests/mm/madv_populate.c | 21 ++-------------- tools/testing/selftests/mm/soft-dirty.c | 5 +++- tools/testing/selftests/mm/vm_util.c | 28 ++++++++++++++++++++++ tools/testing/selftests/mm/vm_util.h | 1 + 4 files changed, 35 insertions(+), 20 deletions(-) diff --git a/tools/testing/selftests/mm/madv_populate.c b/tools/testing/selftests/mm/madv_populate.c index b6fabd5c27ed..43dac7783004 100644 --- a/tools/testing/selftests/mm/madv_populate.c +++ b/tools/testing/selftests/mm/madv_populate.c @@ -264,23 +264,6 @@ static void test_softdirty(void) munmap(addr, SIZE); } -static int system_has_softdirty(void) -{ - /* - * There is no way to check if the kernel supports soft-dirty, other - * than by writing to a page and seeing if the bit was set. But the - * tests are intended to check that the bit gets set when it should, so - * doing that check would turn a potentially legitimate fail into a - * skip. Fortunately, we know for sure that arm64 does not support - * soft-dirty. So for now, let's just use the arch as a corse guide. - */ -#if defined(__aarch64__) - return 0; -#else - return 1; -#endif -} - int main(int argc, char **argv) { int nr_tests = 16; @@ -288,7 +271,7 @@ int main(int argc, char **argv) pagesize = getpagesize(); - if (system_has_softdirty()) + if (softdirty_is_supported()) nr_tests += 5; ksft_print_header(); @@ -300,7 +283,7 @@ int main(int argc, char **argv) test_holes(); test_populate_read(); test_populate_write(); - if (system_has_softdirty()) + if (softdirty_is_supported()) test_softdirty(); err = ksft_get_fail_cnt(); diff --git a/tools/testing/selftests/mm/soft-dirty.c b/tools/testing/selftests/mm/soft-dirty.c index 8a3f2b4b2186..98e42d2ac32a 100644 --- a/tools/testing/selftests/mm/soft-dirty.c +++ b/tools/testing/selftests/mm/soft-dirty.c @@ -200,8 +200,11 @@ int main(int argc, char **argv) int pagesize; ksft_print_header(); - ksft_set_plan(15); + if (!softdirty_is_supported()) + ksft_exit_skip("soft-dirty is not support\n"); + + ksft_set_plan(15); pagemap_fd = open(PAGEMAP_FILE_PATH, O_RDONLY); if (pagemap_fd < 0) ksft_exit_fail_msg("Failed to open %s\n", PAGEMAP_FILE_PATH); diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c index 56e9bd541edd..3173335df775 100644 --- a/tools/testing/selftests/mm/vm_util.c +++ b/tools/testing/selftests/mm/vm_util.c @@ -449,6 +449,34 @@ bool check_vmflag_pfnmap(void *addr) return check_vmflag(addr, "pf"); } +bool softdirty_is_supported(void) +{ + char *addr; + int ret = 0; + size_t pagesize; + + /* We know for sure that arm64 does not support soft-dirty. */ +#if defined(__aarch64__) + return ret; +#endif + pagesize = getpagesize(); + /* + * __mmap_complete() always sets VM_SOFTDIRTY for new VMAs, so we + * just mmap a small region and check its VmFlags in /proc/self/smaps + * for the "sd" flag. + */ + addr = mmap(0, pagesize, PROT_READ | PROT_WRITE, + MAP_ANONYMOUS | MAP_PRIVATE, 0, 0); + if (!addr) + ksft_exit_fail_msg("mmap failed\n"); + + if (check_vmflag(addr, "sd")) + ret = 1; + + munmap(addr, pagesize); + return ret; +} + /* * Open an fd at /proc/$pid/maps and configure procmap_out ready for * PROCMAP_QUERY query. Returns 0 on success, or an error code otherwise. diff --git a/tools/testing/selftests/mm/vm_util.h b/tools/testing/selftests/mm/vm_util.h index 07c4acfd84b6..87ad8e0d92c0 100644 --- a/tools/testing/selftests/mm/vm_util.h +++ b/tools/testing/selftests/mm/vm_util.h @@ -104,6 +104,7 @@ bool find_vma_procmap(struct procmap_fd *procmap, void *address); int close_procmap(struct procmap_fd *procmap); int write_sysfs(const char *file_path, unsigned long val); int read_sysfs(const char *file_path, unsigned long *val); +bool softdirty_is_supported(void); static inline int open_self_procmap(struct procmap_fd *procmap_out) { -- 2.49.0

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[PATCH v3 0/3] HID: hidraw: rework ioctls

by Benjamin Tissoires

Arnd sent the v1 of the series in July, and it was bogus. So with a little help from claude-sonnet I built up the missing ioctls tests and tried to figure out a way to apply Arnd's logic without breaking the existing ioctls. The end result is in patch 3/3, which makes use of subfunctions to keep the main ioctl code path clean. Signed-off-by: Benjamin Tissoires <bentiss(a)kernel.org> --- Changes in v3: - dropped the co-developed-by tag and put a blurb instead - change the attribution of patch 3/3 to me as requested by Arnd. - Link to v2: https://lore.kernel.org/r/20250826-b4-hidraw-ioctls-v2-0-c7726b236719@kerne… changes in v2: - add new hidraw ioctls tests - refactor Arnd's patch to keep the existing error path logic - link to v1: https://lore.kernel.org/linux-input/20250711072847.2836962-1-arnd@kernel.or… --- Benjamin Tissoires (3): selftests/hid: hidraw: add more coverage for hidraw ioctls selftests/hid: hidraw: forge wrong ioctls and tests them HID: hidraw: tighten ioctl command parsing drivers/hid/hidraw.c | 224 ++++++++------- include/uapi/linux/hidraw.h | 2 + tools/testing/selftests/hid/hid_common.h | 6 + tools/testing/selftests/hid/hidraw.c | 473 +++++++++++++++++++++++++++++++ 4 files changed, 603 insertions(+), 102 deletions(-) --- base-commit: 02d6eeedbc36d4b309d5518778071a749ef79c4e change-id: 20250825-b4-hidraw-ioctls-66f34297032a Best regards, -- Benjamin Tissoires <bentiss(a)kernel.org>

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