October 2024 - Linux-kselftest-mirror

[PATCH net] selftests: rds: move include.sh to TEST_FILES

by Hangbin Liu

The include.sh file is generated for inclusion and should not be executable. Otherwise, it will be added to kselftest-list.txt. Additionally, add the executable bit for test.py at the same time to ensure proper functionality. Fixes: 3ade6ce1255e ("selftests: rds: add testing infrastructure") Signed-off-by: Hangbin Liu <liuhangbin(a)gmail.com> --- tools/testing/selftests/net/rds/Makefile | 3 ++- tools/testing/selftests/net/rds/test.py | 0 2 files changed, 2 insertions(+), 1 deletion(-) mode change 100644 => 100755 tools/testing/selftests/net/rds/test.py diff --git a/tools/testing/selftests/net/rds/Makefile b/tools/testing/selftests/net/rds/Makefile index da9714bc7aad..cf30307a829b 100644 --- a/tools/testing/selftests/net/rds/Makefile +++ b/tools/testing/selftests/net/rds/Makefile @@ -4,9 +4,10 @@ all: @echo mk_build_dir="$(shell pwd)" > include.sh TEST_PROGS := run.sh \ - include.sh \ test.py +TEST_FILES := include.sh + EXTRA_CLEAN := /tmp/rds_logs include ../../lib.mk diff --git a/tools/testing/selftests/net/rds/test.py b/tools/testing/selftests/net/rds/test.py old mode 100644 new mode 100755 -- 2.39.3 (Apple Git-146)

1 year

3
3
0 0

[RFC] Test catalog template

by Donald Zickus

Hi, At Linux Plumbers, a few dozen of us gathered together to discuss how to expose what tests subsystem maintainers would like to run for every patch submitted or when CI runs tests. We agreed on a mock up of a yaml template to start gathering info. The yaml file could be temporarily stored on kernelci.org until a more permanent home could be found. Attached is a template to start the conversation. Longer story. The current problem is CI systems are not unanimous about what tests they run on submitted patches or git branches. This makes it difficult to figure out why a test failed or how to reproduce. Further, it isn't always clear what tests a normal contributor should run before posting patches. It has been long communicated that the tests LTP, xfstest and/or kselftests should be the tests to run. However, not all maintainers use those tests for their subsystems. I am hoping to either capture those tests or find ways to convince them to add their tests to the preferred locations. The goal is for a given subsystem (defined in MAINTAINERS), define a set of tests that should be run for any contributions to that subsystem. The hope is the collective CI results can be triaged collectively (because they are related) and even have the numerous flakes waived collectively (same reason) improving the ability to find and debug new test failures. Because the tests and process are known, having a human help debug any failures becomes easier. The plan is to put together a minimal yaml template that gets us going (even if it is not optimized yet) and aim for about a dozen or so subsystems. At that point we should have enough feedback to promote this more seriously and talk optimizations. Feedback encouraged. Cheers, Don --- # List of tests by subsystem # # Tests should adhere to KTAP definitions for results # # Description of section entries # # maintainer: test maintainer - name <email> # list: mailing list for discussion # version: stable version of the test # dependency: necessary distro package for testing # test: # path: internal git path or url to fetch from # cmd: command to run; ability to run locally # param: additional param necessary to run test # hardware: hardware necessary for validation # # Subsystems (alphabetical) KUNIT TEST: maintainer: - name: name1 email: email1 - name: name2 email: email2 list: version: dependency: - dep1 - dep2 test: - path: tools/testing/kunit cmd: param: - path: cmd: param: hardware: none

1 year

7
16
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[PATCH v2 0/5] Improve arm64 pkeys handling in signal delivery

by Kevin Brodsky

This series is a follow-up to Joey's Permission Overlay Extension (POE) series [1] that recently landed on mainline. The goal is to improve the way we handle the register that governs which pkeys/POIndex are accessible (POR_EL0) during signal delivery. As things stand, we may unexpectedly fail to write the signal frame on the stack because POR_EL0 is not reset before the uaccess operations. See patch 3 for more details and the main changes this series brings. A similar series landed recently for x86/MPK [2]; the present series aims at aligning arm64 with x86. Worth noting: once the signal frame is written, POR_EL0 is still set to POR_EL0_INIT, granting access to pkey 0 only. This means that a program that sets up an alternate signal stack with a non-zero pkey will need some assembly trampoline to set POR_EL0 before invoking the real signal handler, as discussed here [3]. This is not ideal, but it makes experimentation with pkeys in signal handlers possible while waiting for a potential interface to control the pkey state when delivering a signal. See Pierre's reply [4] for more information about use-cases and a potential interface. The x86 series also added kselftests to ensure that no spurious SIGSEGV occurs during signal delivery regardless of which pkey is accessible at the point where the signal is delivered. This series adapts those kselftests to allow running them on arm64 (patch 4-5). Finally patch 2 is a clean-up following feedback on Joey's series [5]. I have tested this series on arm64 and x86_64 (booting and running the protection_keys and pkey_sighandler_tests mm kselftests). v1..v2: * In setup_rt_frame(), ensured that POR_EL0 is reset to its original value if we fail to deliver the signal (addresses Catalin's concern [6]). * Renamed *unpriv_access* to *user_access* in patch 3 (suggestion from Dave). * Made what patch 1-2 do explicit in the commit message body (suggestion from Dave). - Kevin [1] https://lore.kernel.org/linux-arm-kernel/20240822151113.1479789-1-joey.goul… [2] https://lore.kernel.org/lkml/20240802061318.2140081-1-aruna.ramakrishna@ora… [3] https://lore.kernel.org/lkml/CABi2SkWxNkP2O7ipkP67WKz0-LV33e5brReevTTtba6oK… [4] https://lore.kernel.org/linux-arm-kernel/87plns8owh.fsf@arm.com/ [5] https://lore.kernel.org/linux-arm-kernel/20241015114116.GA19334@willie-the-… [6] https://lore.kernel.org/linux-arm-kernel/Zw6D2waVyIwYE7wd@arm.com/ Cc: akpm(a)linux-foundation.org Cc: anshuman.khandual(a)arm.com Cc: aruna.ramakrishna(a)oracle.com Cc: broonie(a)kernel.org Cc: catalin.marinas(a)arm.com Cc: dave.hansen(a)linux.intel.com Cc: dave.martin(a)arm.com Cc: jeffxu(a)chromium.org Cc: joey.gouly(a)arm.com Cc: pierre.langlois(a)arm.com Cc: shuah(a)kernel.org Cc: sroettger(a)google.com Cc: will(a)kernel.org Cc: linux-kselftest(a)vger.kernel.org Cc: x86(a)kernel.org Kevin Brodsky (5): arm64: signal: Remove unused macro arm64: signal: Remove unnecessary check when saving POE state arm64: signal: Improve POR_EL0 handling to avoid uaccess failures selftests/mm: Use generic pkey register manipulation selftests/mm: Enable pkey_sighandler_tests on arm64 arch/arm64/kernel/signal.c | 95 +++++++++++++--- tools/testing/selftests/mm/Makefile | 8 +- tools/testing/selftests/mm/pkey-arm64.h | 1 + tools/testing/selftests/mm/pkey-x86.h | 2 + .../selftests/mm/pkey_sighandler_tests.c | 101 +++++++++++++----- 5 files changed, 162 insertions(+), 45 deletions(-) -- 2.43.0

1 year, 1 month

4
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[PATCH v2] selftests/powerpc: Remove the path after initialization.

by zhangjiao2

From: zhang jiao <zhangjiao2(a)cmss.chinamobile.com> If there were no anamolies noted, then we can simply remove the log file and return. Signed-off-by: zhang jiao <zhangjiao2(a)cmss.chinamobile.com> --- v1->v2: Remove the path after initialization. tools/testing/selftests/powerpc/mm/tlbie_test.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/powerpc/mm/tlbie_test.c b/tools/testing/selftests/powerpc/mm/tlbie_test.c index 48344a74b212..35f0098399cc 100644 --- a/tools/testing/selftests/powerpc/mm/tlbie_test.c +++ b/tools/testing/selftests/powerpc/mm/tlbie_test.c @@ -313,16 +313,16 @@ static inline void end_verification_log(unsigned int tid, unsigned nr_anamolies) fclose(f); - if (nr_anamolies == 0) { - remove(path); - return; - } - sprintf(logfile, logfilename, tid); strcpy(path, logdir); strcat(path, separator); strcat(path, logfile); + if (nr_anamolies == 0) { + remove(path); + return; + } + printf("Thread %02d chunk has %d corrupted words. For details check %s\n", tid, nr_anamolies, path); } -- 2.33.0

1 year, 1 month

3
2
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[PATCH net-next v23 1/7] mm: page_frag: add a test module for page_frag

by Yunsheng Lin

The testing is done by ensuring that the fragment allocated from a frag_frag_cache instance is pushed into a ptr_ring instance in a kthread binded to a specified cpu, and a kthread binded to a specified cpu will pop the fragment from the ptr_ring and free the fragment. CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Alexander Duyck <alexander.duyck(a)gmail.com> CC: Linux-MM <linux-mm(a)kvack.org> Signed-off-by: Yunsheng Lin <linyunsheng(a)huawei.com> Reviewed-by: Alexander Duyck <alexanderduyck(a)fb.com> --- tools/testing/selftests/mm/Makefile | 3 + tools/testing/selftests/mm/page_frag/Makefile | 18 ++ .../selftests/mm/page_frag/page_frag_test.c | 198 ++++++++++++++++++ tools/testing/selftests/mm/run_vmtests.sh | 8 + tools/testing/selftests/mm/test_page_frag.sh | 175 ++++++++++++++++ 5 files changed, 402 insertions(+) create mode 100644 tools/testing/selftests/mm/page_frag/Makefile create mode 100644 tools/testing/selftests/mm/page_frag/page_frag_test.c create mode 100755 tools/testing/selftests/mm/test_page_frag.sh diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile index 02e1204971b0..acec529baaca 100644 --- a/tools/testing/selftests/mm/Makefile +++ b/tools/testing/selftests/mm/Makefile @@ -36,6 +36,8 @@ MAKEFLAGS += --no-builtin-rules CFLAGS = -Wall -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES) $(TOOLS_INCLUDES) LDLIBS = -lrt -lpthread -lm +TEST_GEN_MODS_DIR := page_frag + TEST_GEN_FILES = cow TEST_GEN_FILES += compaction_test TEST_GEN_FILES += gup_longterm @@ -126,6 +128,7 @@ TEST_FILES += test_hmm.sh TEST_FILES += va_high_addr_switch.sh TEST_FILES += charge_reserved_hugetlb.sh TEST_FILES += hugetlb_reparenting_test.sh +TEST_FILES += test_page_frag.sh # required by charge_reserved_hugetlb.sh TEST_FILES += write_hugetlb_memory.sh diff --git a/tools/testing/selftests/mm/page_frag/Makefile b/tools/testing/selftests/mm/page_frag/Makefile new file mode 100644 index 000000000000..58dda74d50a3 --- /dev/null +++ b/tools/testing/selftests/mm/page_frag/Makefile @@ -0,0 +1,18 @@ +PAGE_FRAG_TEST_DIR := $(realpath $(dir $(abspath $(lastword $(MAKEFILE_LIST))))) +KDIR ?= $(abspath $(PAGE_FRAG_TEST_DIR)/../../../../..) + +ifeq ($(V),1) +Q = +else +Q = @ +endif + +MODULES = page_frag_test.ko + +obj-m += page_frag_test.o + +all: + +$(Q)make -C $(KDIR) M=$(PAGE_FRAG_TEST_DIR) modules + +clean: + +$(Q)make -C $(KDIR) M=$(PAGE_FRAG_TEST_DIR) clean diff --git a/tools/testing/selftests/mm/page_frag/page_frag_test.c b/tools/testing/selftests/mm/page_frag/page_frag_test.c new file mode 100644 index 000000000000..912d97b99107 --- /dev/null +++ b/tools/testing/selftests/mm/page_frag/page_frag_test.c @@ -0,0 +1,198 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Test module for page_frag cache + * + * Copyright (C) 2024 Yunsheng Lin <linyunsheng(a)huawei.com> + */ + +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/cpumask.h> +#include <linux/completion.h> +#include <linux/ptr_ring.h> +#include <linux/kthread.h> + +#define TEST_FAILED_PREFIX "page_frag_test failed: " + +static struct ptr_ring ptr_ring; +static int nr_objs = 512; +static atomic_t nthreads; +static struct completion wait; +static struct page_frag_cache test_nc; +static int test_popped; +static int test_pushed; +static bool force_exit; + +static int nr_test = 2000000; +module_param(nr_test, int, 0); +MODULE_PARM_DESC(nr_test, "number of iterations to test"); + +static bool test_align; +module_param(test_align, bool, 0); +MODULE_PARM_DESC(test_align, "use align API for testing"); + +static int test_alloc_len = 2048; +module_param(test_alloc_len, int, 0); +MODULE_PARM_DESC(test_alloc_len, "alloc len for testing"); + +static int test_push_cpu; +module_param(test_push_cpu, int, 0); +MODULE_PARM_DESC(test_push_cpu, "test cpu for pushing fragment"); + +static int test_pop_cpu; +module_param(test_pop_cpu, int, 0); +MODULE_PARM_DESC(test_pop_cpu, "test cpu for popping fragment"); + +static int page_frag_pop_thread(void *arg) +{ + struct ptr_ring *ring = arg; + + pr_info("page_frag pop test thread begins on cpu %d\n", + smp_processor_id()); + + while (test_popped < nr_test) { + void *obj = __ptr_ring_consume(ring); + + if (obj) { + test_popped++; + page_frag_free(obj); + } else { + if (force_exit) + break; + + cond_resched(); + } + } + + if (atomic_dec_and_test(&nthreads)) + complete(&wait); + + pr_info("page_frag pop test thread exits on cpu %d\n", + smp_processor_id()); + + return 0; +} + +static int page_frag_push_thread(void *arg) +{ + struct ptr_ring *ring = arg; + + pr_info("page_frag push test thread begins on cpu %d\n", + smp_processor_id()); + + while (test_pushed < nr_test && !force_exit) { + void *va; + int ret; + + if (test_align) { + va = page_frag_alloc_align(&test_nc, test_alloc_len, + GFP_KERNEL, SMP_CACHE_BYTES); + + if ((unsigned long)va & (SMP_CACHE_BYTES - 1)) { + force_exit = true; + WARN_ONCE(true, TEST_FAILED_PREFIX "unaligned va returned\n"); + } + } else { + va = page_frag_alloc(&test_nc, test_alloc_len, GFP_KERNEL); + } + + if (!va) + continue; + + ret = __ptr_ring_produce(ring, va); + if (ret) { + page_frag_free(va); + cond_resched(); + } else { + test_pushed++; + } + } + + pr_info("page_frag push test thread exits on cpu %d\n", + smp_processor_id()); + + if (atomic_dec_and_test(&nthreads)) + complete(&wait); + + return 0; +} + +static int __init page_frag_test_init(void) +{ + struct task_struct *tsk_push, *tsk_pop; + int last_pushed = 0, last_popped = 0; + ktime_t start; + u64 duration; + int ret; + + test_nc.va = NULL; + atomic_set(&nthreads, 2); + init_completion(&wait); + + if (test_alloc_len > PAGE_SIZE || test_alloc_len <= 0 || + !cpu_active(test_push_cpu) || !cpu_active(test_pop_cpu)) + return -EINVAL; + + ret = ptr_ring_init(&ptr_ring, nr_objs, GFP_KERNEL); + if (ret) + return ret; + + tsk_push = kthread_create_on_cpu(page_frag_push_thread, &ptr_ring, + test_push_cpu, "page_frag_push"); + if (IS_ERR(tsk_push)) + return PTR_ERR(tsk_push); + + tsk_pop = kthread_create_on_cpu(page_frag_pop_thread, &ptr_ring, + test_pop_cpu, "page_frag_pop"); + if (IS_ERR(tsk_pop)) { + kthread_stop(tsk_push); + return PTR_ERR(tsk_pop); + } + + start = ktime_get(); + wake_up_process(tsk_push); + wake_up_process(tsk_pop); + + pr_info("waiting for test to complete\n"); + + while (!wait_for_completion_timeout(&wait, msecs_to_jiffies(10000))) { + /* exit if there is no progress for push or pop size */ + if (last_pushed == test_pushed || last_popped == test_popped) { + WARN_ONCE(true, TEST_FAILED_PREFIX "no progress\n"); + force_exit = true; + continue; + } + + last_pushed = test_pushed; + last_popped = test_popped; + pr_info("page_frag_test progress: pushed = %d, popped = %d\n", + test_pushed, test_popped); + } + + if (force_exit) { + pr_err(TEST_FAILED_PREFIX "exit with error\n"); + goto out; + } + + duration = (u64)ktime_us_delta(ktime_get(), start); + pr_info("%d of iterations for %s testing took: %lluus\n", nr_test, + test_align ? "aligned" : "non-aligned", duration); + +out: + ptr_ring_cleanup(&ptr_ring, NULL); + page_frag_cache_drain(&test_nc); + + return -EAGAIN; +} + +static void __exit page_frag_test_exit(void) +{ +} + +module_init(page_frag_test_init); +module_exit(page_frag_test_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Yunsheng Lin <linyunsheng(a)huawei.com>"); +MODULE_DESCRIPTION("Test module for page_frag"); diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index c5797ad1d37b..2c5394584af4 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -75,6 +75,8 @@ separated by spaces: read-only VMAs - mdwe test prctl(PR_SET_MDWE, ...) +- page_frag + test handling of page fragment allocation and freeing example: ./run_vmtests.sh -t "hmm mmap ksm" EOF @@ -456,6 +458,12 @@ CATEGORY="mkdirty" run_test ./mkdirty CATEGORY="mdwe" run_test ./mdwe_test +CATEGORY="page_frag" run_test ./test_page_frag.sh smoke + +CATEGORY="page_frag" run_test ./test_page_frag.sh aligned + +CATEGORY="page_frag" run_test ./test_page_frag.sh nonaligned + echo "SUMMARY: PASS=${count_pass} SKIP=${count_skip} FAIL=${count_fail}" | tap_prefix echo "1..${count_total}" | tap_output diff --git a/tools/testing/selftests/mm/test_page_frag.sh b/tools/testing/selftests/mm/test_page_frag.sh new file mode 100755 index 000000000000..f55b105084cf --- /dev/null +++ b/tools/testing/selftests/mm/test_page_frag.sh @@ -0,0 +1,175 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (C) 2024 Yunsheng Lin <linyunsheng(a)huawei.com> +# Copyright (C) 2018 Uladzislau Rezki (Sony) <urezki(a)gmail.com> +# +# This is a test script for the kernel test driver to test the +# correctness and performance of page_frag's implementation. +# Therefore it is just a kernel module loader. You can specify +# and pass different parameters in order to: +# a) analyse performance of page fragment allocations; +# b) stressing and stability check of page_frag subsystem. + +DRIVER="./page_frag/page_frag_test.ko" +CPU_LIST=$(grep -m 2 processor /proc/cpuinfo | cut -d ' ' -f 2) +TEST_CPU_0=$(echo $CPU_LIST | awk '{print $1}') + +if [ $(echo $CPU_LIST | wc -w) -gt 1 ]; then + TEST_CPU_1=$(echo $CPU_LIST | awk '{print $2}') + NR_TEST=100000000 +else + TEST_CPU_1=$TEST_CPU_0 + NR_TEST=1000000 +fi + +# 1 if fails +exitcode=1 + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +check_test_failed_prefix() { + if dmesg | grep -q 'page_frag_test failed:';then + echo "page_frag_test failed, please check dmesg" + exit $exitcode + fi +} + +# +# Static templates for testing of page_frag APIs. +# Also it is possible to pass any supported parameters manually. +# +SMOKE_PARAM="test_push_cpu=$TEST_CPU_0 test_pop_cpu=$TEST_CPU_1" +NONALIGNED_PARAM="$SMOKE_PARAM test_alloc_len=75 nr_test=$NR_TEST" +ALIGNED_PARAM="$NONALIGNED_PARAM test_align=1" + +check_test_requirements() +{ + uid=$(id -u) + if [ $uid -ne 0 ]; then + echo "$0: Must be run as root" + exit $ksft_skip + fi + + if ! which insmod > /dev/null 2>&1; then + echo "$0: You need insmod installed" + exit $ksft_skip + fi + + if [ ! -f $DRIVER ]; then + echo "$0: You need to compile page_frag_test module" + exit $ksft_skip + fi +} + +run_nonaligned_check() +{ + echo "Run performance tests to evaluate how fast nonaligned alloc API is." + + insmod $DRIVER $NONALIGNED_PARAM > /dev/null 2>&1 +} + +run_aligned_check() +{ + echo "Run performance tests to evaluate how fast aligned alloc API is." + + insmod $DRIVER $ALIGNED_PARAM > /dev/null 2>&1 +} + +run_smoke_check() +{ + echo "Run smoke test." + + insmod $DRIVER $SMOKE_PARAM > /dev/null 2>&1 +} + +usage() +{ + echo -n "Usage: $0 [ aligned ] | [ nonaligned ] | | [ smoke ] | " + echo "manual parameters" + echo + echo "Valid tests and parameters:" + echo + modinfo $DRIVER + echo + echo "Example usage:" + echo + echo "# Shows help message" + echo "$0" + echo + echo "# Smoke testing" + echo "$0 smoke" + echo + echo "# Performance testing for nonaligned alloc API" + echo "$0 nonaligned" + echo + echo "# Performance testing for aligned alloc API" + echo "$0 aligned" + echo + exit 0 +} + +function validate_passed_args() +{ + VALID_ARGS=`modinfo $DRIVER | awk '/parm:/ {print $2}' | sed 's/:.*//'` + + # + # Something has been passed, check it. + # + for passed_arg in $@; do + key=${passed_arg//=*/} + valid=0 + + for valid_arg in $VALID_ARGS; do + if [[ $key = $valid_arg ]]; then + valid=1 + break + fi + done + + if [[ $valid -ne 1 ]]; then + echo "Error: key is not correct: ${key}" + exit $exitcode + fi + done +} + +function run_manual_check() +{ + # + # Validate passed parameters. If there is wrong one, + # the script exists and does not execute further. + # + validate_passed_args $@ + + echo "Run the test with following parameters: $@" + insmod $DRIVER $@ > /dev/null 2>&1 +} + +function run_test() +{ + if [ $# -eq 0 ]; then + usage + else + if [[ "$1" = "smoke" ]]; then + run_smoke_check + elif [[ "$1" = "nonaligned" ]]; then + run_nonaligned_check + elif [[ "$1" = "aligned" ]]; then + run_aligned_check + else + run_manual_check $@ + fi + fi + + check_test_failed_prefix + + echo "Done." + echo "Check the kernel ring buffer to see the summary." +} + +check_test_requirements +run_test $@ + +exit 0 -- 2.33.0

1 year, 1 month

4
6
0 0

[RFC PATCH v3 0/6] Direct Map Removal for guest_memfd

by Patrick Roy

Unmapping virtual machine guest memory from the host kernel's direct map is a successful mitigation against Spectre-style transient execution issues: If the kernel page tables do not contain entries pointing to guest memory, then any attempted speculative read through the direct map will necessarily be blocked by the MMU before any observable microarchitectural side-effects happen. This means that Spectre-gadgets and similar cannot be used to target virtual machine memory. Roughly 60% of speculative execution issues fall into this category [1, Table 1]. This patch series extends guest_memfd with the ability to remove its memory from the host kernel's direct map, to be able to attain the above protection for KVM guests running inside guest_memfd. === Changes to v2 === - Handle direct map removal for physically contiguous pages in arch code (Mike R.) - Track the direct map state in guest_memfd itself instead of at the folio level, to prepare for huge pages support (Sean C.) - Allow configuring direct map state of not-yet faulted in memory (Vishal A.) - Pay attention to alignment in ftrace structs (Steven R.) Most significantly, I've reduced the patch series to focus only on direct map removal for guest_memfd for now, leaving the whole "how to do non-CoCo VMs in guest_memfd" for later. If this separation is acceptable, then I think I can drop the RFC tag in the next revision (I've mainly kept it here because I'm not entirely sure what to do with patches 3 and 4). === Implementation === This patch series introduces a new flag to the KVM_CREATE_GUEST_MEMFD that causes guest_memfd to remove its pages from the host kernel's direct map immediately after population/preparation. It also adds infrastructure for tracking the direct map state of all gmem folios inside the guest_memfd inode. Storing this information in the inode has the advantage that the code is ready for future hugepages extensions, where only removing/reinserting direct map entries for sub-ranges of a huge folio is a valid usecase, and it allows pre-configuring the direct map state of not-yet faulted in parts of memory (for example, when the VMM is receiving a RX virtio buffer from the guest). === Summary === Patch 1 (from Mike Rapoport) adds arch APIs for manipulating the direct map for ranges of physically contiguous pages, which are used by guest_memfd in follow up patches. Patch 2 adds the KVM_GMEM_NO_DIRECT_MAP flag and the logic for configuring direct map state of freshly prepared folios. Patches 3 and 4 mainly serve an illustrative purpose, to show how the framework from patch 2 can be extended with routines for runtime direct map manipulation. Patches 5 and 6 deal with documentation and self-tests respectively. [1]: https://download.vusec.net/papers/quarantine_raid23.pdf [RFC v1]: https://lore.kernel.org/kvm/20240709132041.3625501-1-roypat@amazon.co.uk/ [RFC v2]: https://lore.kernel.org/kvm/20240910163038.1298452-1-roypat@amazon.co.uk/ Mike Rapoport (Microsoft) (1): arch: introduce set_direct_map_valid_noflush() Patrick Roy (5): kvm: gmem: add flag to remove memory from kernel direct map kvm: gmem: implement direct map manipulation routines kvm: gmem: add trace point for direct map state changes kvm: document KVM_GMEM_NO_DIRECT_MAP flag kvm: selftests: run gmem tests with KVM_GMEM_NO_DIRECT_MAP set Documentation/virt/kvm/api.rst | 14 + arch/arm64/include/asm/set_memory.h | 1 + arch/arm64/mm/pageattr.c | 10 + arch/loongarch/include/asm/set_memory.h | 1 + arch/loongarch/mm/pageattr.c | 21 ++ arch/riscv/include/asm/set_memory.h | 1 + arch/riscv/mm/pageattr.c | 15 + arch/s390/include/asm/set_memory.h | 1 + arch/s390/mm/pageattr.c | 11 + arch/x86/include/asm/set_memory.h | 1 + arch/x86/mm/pat/set_memory.c | 8 + include/linux/set_memory.h | 6 + include/trace/events/kvm.h | 22 ++ include/uapi/linux/kvm.h | 2 + .../testing/selftests/kvm/guest_memfd_test.c | 2 +- .../kvm/x86_64/private_mem_conversions_test.c | 7 +- virt/kvm/guest_memfd.c | 280 +++++++++++++++++- 17 files changed, 384 insertions(+), 19 deletions(-) base-commit: 5cb1659f412041e4780f2e8ee49b2e03728a2ba6 -- 2.47.0

1 year, 1 month

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[PATCH 1/2] kunit: tool: Only print the summary

by Rae Moar

From: David Gow <davidgow(a)google.com> Allow only printing the summary at the end of a test run, rather than all individual test results. This summary will list a few failing tests if there are any. To use: ./tools/testing/kunit/kunit.py run --summary Signed-off-by: Rae Moar <rmoar(a)google.com> Signed-off-by: David Gow <davidgow(a)google.com> --- tools/testing/kunit/kunit.py | 18 +++- tools/testing/kunit/kunit_parser.py | 109 +++++++++++++------------ tools/testing/kunit/kunit_printer.py | 7 +- tools/testing/kunit/kunit_tool_test.py | 55 +++++++------ 4 files changed, 107 insertions(+), 82 deletions(-) diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py index bc74088c458a..27c55a7fc1a0 100755 --- a/tools/testing/kunit/kunit.py +++ b/tools/testing/kunit/kunit.py @@ -23,7 +23,7 @@ from typing import Iterable, List, Optional, Sequence, Tuple import kunit_json import kunit_kernel import kunit_parser -from kunit_printer import stdout +from kunit_printer import stdout, null_printer class KunitStatus(Enum): SUCCESS = auto() @@ -49,6 +49,7 @@ class KunitBuildRequest(KunitConfigRequest): class KunitParseRequest: raw_output: Optional[str] json: Optional[str] + summary: bool @dataclass class KunitExecRequest(KunitParseRequest): @@ -235,11 +236,16 @@ def parse_tests(request: KunitParseRequest, metadata: kunit_json.Metadata, input parse_time = time.time() - parse_start return KunitResult(KunitStatus.SUCCESS, parse_time), fake_test + default_printer = stdout + if request.summary: + default_printer = null_printer # Actually parse the test results. - test = kunit_parser.parse_run_tests(input_data) + test = kunit_parser.parse_run_tests(input_data, default_printer) parse_time = time.time() - parse_start + kunit_parser.print_summary_line(test, stdout) + if request.json: json_str = kunit_json.get_json_result( test=test, @@ -413,6 +419,10 @@ def add_parse_opts(parser: argparse.ArgumentParser) -> None: help='Prints parsed test results as JSON to stdout or a file if ' 'a filename is specified. Does nothing if --raw_output is set.', type=str, const='stdout', default=None, metavar='FILE') + parser.add_argument('--summary', + help='Prints only the summary line for parsed test results.' + 'Does nothing if --raw_output is set.', + action='store_true') def tree_from_args(cli_args: argparse.Namespace) -> kunit_kernel.LinuxSourceTree: @@ -448,6 +458,7 @@ def run_handler(cli_args: argparse.Namespace) -> None: jobs=cli_args.jobs, raw_output=cli_args.raw_output, json=cli_args.json, + summary=cli_args.summary, timeout=cli_args.timeout, filter_glob=cli_args.filter_glob, filter=cli_args.filter, @@ -495,6 +506,7 @@ def exec_handler(cli_args: argparse.Namespace) -> None: exec_request = KunitExecRequest(raw_output=cli_args.raw_output, build_dir=cli_args.build_dir, json=cli_args.json, + summary=cli_args.summary, timeout=cli_args.timeout, filter_glob=cli_args.filter_glob, filter=cli_args.filter, @@ -520,7 +532,7 @@ def parse_handler(cli_args: argparse.Namespace) -> None: # We know nothing about how the result was created! metadata = kunit_json.Metadata() request = KunitParseRequest(raw_output=cli_args.raw_output, - json=cli_args.json) + json=cli_args.json, summary=cli_args.summary) result, _ = parse_tests(request, metadata, kunit_output) if result.status != KunitStatus.SUCCESS: sys.exit(1) diff --git a/tools/testing/kunit/kunit_parser.py b/tools/testing/kunit/kunit_parser.py index ce34be15c929..732f448263de 100644 --- a/tools/testing/kunit/kunit_parser.py +++ b/tools/testing/kunit/kunit_parser.py @@ -17,7 +17,7 @@ import textwrap from enum import Enum, auto from typing import Iterable, Iterator, List, Optional, Tuple -from kunit_printer import stdout +from kunit_printer import Printer, stdout class Test: """ @@ -54,10 +54,10 @@ class Test: """Returns string representation of a Test class object.""" return str(self) - def add_error(self, error_message: str) -> None: + def add_error(self, printer: Printer, error_message: str) -> None: """Records an error that occurred while parsing this test.""" self.counts.errors += 1 - stdout.print_with_timestamp(stdout.red('[ERROR]') + f' Test: {self.name}: {error_message}') + printer.print_with_timestamp(stdout.red('[ERROR]') + f' Test: {self.name}: {error_message}') def ok_status(self) -> bool: """Returns true if the status was ok, i.e. passed or skipped.""" @@ -251,7 +251,7 @@ KTAP_VERSIONS = [1] TAP_VERSIONS = [13, 14] def check_version(version_num: int, accepted_versions: List[int], - version_type: str, test: Test) -> None: + version_type: str, test: Test, printer: Printer) -> None: """ Adds error to test object if version number is too high or too low. @@ -263,13 +263,14 @@ def check_version(version_num: int, accepted_versions: List[int], version_type - 'KTAP' or 'TAP' depending on the type of version line. test - Test object for current test being parsed + printer - Printer object to output error """ if version_num < min(accepted_versions): - test.add_error(f'{version_type} version lower than expected!') + test.add_error(printer, f'{version_type} version lower than expected!') elif version_num > max(accepted_versions): - test.add_error(f'{version_type} version higer than expected!') + test.add_error(printer, f'{version_type} version higer than expected!') -def parse_ktap_header(lines: LineStream, test: Test) -> bool: +def parse_ktap_header(lines: LineStream, test: Test, printer: Printer) -> bool: """ Parses KTAP/TAP header line and checks version number. Returns False if fails to parse KTAP/TAP header line. @@ -281,6 +282,7 @@ def parse_ktap_header(lines: LineStream, test: Test) -> bool: Parameters: lines - LineStream of KTAP output to parse test - Test object for current test being parsed + printer - Printer object to output results Return: True if successfully parsed KTAP/TAP header line @@ -289,10 +291,10 @@ def parse_ktap_header(lines: LineStream, test: Test) -> bool: tap_match = TAP_START.match(lines.peek()) if ktap_match: version_num = int(ktap_match.group(1)) - check_version(version_num, KTAP_VERSIONS, 'KTAP', test) + check_version(version_num, KTAP_VERSIONS, 'KTAP', test, printer) elif tap_match: version_num = int(tap_match.group(1)) - check_version(version_num, TAP_VERSIONS, 'TAP', test) + check_version(version_num, TAP_VERSIONS, 'TAP', test, printer) else: return False lines.pop() @@ -380,7 +382,7 @@ def peek_test_name_match(lines: LineStream, test: Test) -> bool: return name == test.name def parse_test_result(lines: LineStream, test: Test, - expected_num: int) -> bool: + expected_num: int, printer: Printer) -> bool: """ Parses test result line and stores the status and name in the test object. Reports an error if the test number does not match expected @@ -398,6 +400,7 @@ def parse_test_result(lines: LineStream, test: Test, lines - LineStream of KTAP output to parse test - Test object for current test being parsed expected_num - expected test number for current test + printer - Printer object to output results Return: True if successfully parsed a test result line. @@ -420,7 +423,7 @@ def parse_test_result(lines: LineStream, test: Test, # Check test num num = int(match.group(2)) if num != expected_num: - test.add_error(f'Expected test number {expected_num} but found {num}') + test.add_error(printer, f'Expected test number {expected_num} but found {num}') # Set status of test object status = match.group(1) @@ -486,7 +489,7 @@ def format_test_divider(message: str, len_message: int) -> str: len_2 = difference - len_1 return ('=' * len_1) + f' {message} ' + ('=' * len_2) -def print_test_header(test: Test) -> None: +def print_test_header(test: Test, printer: Printer) -> None: """ Prints test header with test name and optionally the expected number of subtests. @@ -496,6 +499,7 @@ def print_test_header(test: Test) -> None: Parameters: test - Test object representing current test being printed + printer - Printer object to output results """ message = test.name if message != "": @@ -507,15 +511,15 @@ def print_test_header(test: Test) -> None: message += '(1 subtest)' else: message += f'({test.expected_count} subtests)' - stdout.print_with_timestamp(format_test_divider(message, len(message))) + printer.print_with_timestamp(format_test_divider(message, len(message))) -def print_log(log: Iterable[str]) -> None: +def print_log(log: Iterable[str], printer: Printer) -> None: """Prints all strings in saved log for test in yellow.""" formatted = textwrap.dedent('\n'.join(log)) for line in formatted.splitlines(): - stdout.print_with_timestamp(stdout.yellow(line)) + printer.print_with_timestamp(printer.yellow(line)) -def format_test_result(test: Test) -> str: +def format_test_result(test: Test, printer: Printer) -> str: """ Returns string with formatted test result with colored status and test name. @@ -525,23 +529,24 @@ def format_test_result(test: Test) -> str: Parameters: test - Test object representing current test being printed + printer - Printer object to output results Return: String containing formatted test result """ if test.status == TestStatus.SUCCESS: - return stdout.green('[PASSED] ') + test.name + return printer.green('[PASSED] ') + test.name if test.status == TestStatus.SKIPPED: - return stdout.yellow('[SKIPPED] ') + test.name + return printer.yellow('[SKIPPED] ') + test.name if test.status == TestStatus.NO_TESTS: - return stdout.yellow('[NO TESTS RUN] ') + test.name + return printer.yellow('[NO TESTS RUN] ') + test.name if test.status == TestStatus.TEST_CRASHED: - print_log(test.log) + print_log(test.log, printer) return stdout.red('[CRASHED] ') + test.name - print_log(test.log) - return stdout.red('[FAILED] ') + test.name + print_log(test.log, printer) + return printer.red('[FAILED] ') + test.name -def print_test_result(test: Test) -> None: +def print_test_result(test: Test, printer: Printer) -> None: """ Prints result line with status of test. @@ -550,10 +555,11 @@ def print_test_result(test: Test) -> None: Parameters: test - Test object representing current test being printed + printer - Printer object """ - stdout.print_with_timestamp(format_test_result(test)) + printer.print_with_timestamp(format_test_result(test, printer)) -def print_test_footer(test: Test) -> None: +def print_test_footer(test: Test, printer: Printer) -> None: """ Prints test footer with status of test. @@ -562,10 +568,11 @@ def print_test_footer(test: Test) -> None: Parameters: test - Test object representing current test being printed + printer - Printer object to output results """ - message = format_test_result(test) - stdout.print_with_timestamp(format_test_divider(message, - len(message) - stdout.color_len())) + message = format_test_result(test, printer) + printer.print_with_timestamp(format_test_divider(message, + len(message) - printer.color_len())) @@ -601,7 +608,7 @@ def _summarize_failed_tests(test: Test) -> str: return 'Failures: ' + ', '.join(failures) -def print_summary_line(test: Test) -> None: +def print_summary_line(test: Test, printer: Printer) -> None: """ Prints summary line of test object. Color of line is dependent on status of test. Color is green if test passes, yellow if test is @@ -614,6 +621,7 @@ def print_summary_line(test: Test) -> None: Errors: 0" test - Test object representing current test being printed + printer - Printer object to output results """ if test.status == TestStatus.SUCCESS: color = stdout.green @@ -621,7 +629,7 @@ def print_summary_line(test: Test) -> None: color = stdout.yellow else: color = stdout.red - stdout.print_with_timestamp(color(f'Testing complete. {test.counts}')) + printer.print_with_timestamp(color(f'Testing complete. {test.counts}')) # Summarize failures that might have gone off-screen since we had a lot # of tests (arbitrarily defined as >=100 for now). @@ -630,7 +638,7 @@ def print_summary_line(test: Test) -> None: summarized = _summarize_failed_tests(test) if not summarized: return - stdout.print_with_timestamp(color(summarized)) + printer.print_with_timestamp(color(summarized)) # Other methods: @@ -654,7 +662,7 @@ def bubble_up_test_results(test: Test) -> None: elif test.counts.get_status() == TestStatus.TEST_CRASHED: test.status = TestStatus.TEST_CRASHED -def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: bool) -> Test: +def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: bool, printer: Printer) -> Test: """ Finds next test to parse in LineStream, creates new Test object, parses any subtests of the test, populates Test object with all @@ -710,6 +718,7 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: log - list of strings containing any preceding diagnostic lines corresponding to the current test is_subtest - boolean indicating whether test is a subtest + printer - Printer object to output results Return: Test object populated with characteristics and any subtests @@ -725,14 +734,14 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: # If parsing the main/top-level test, parse KTAP version line and # test plan test.name = "main" - ktap_line = parse_ktap_header(lines, test) + ktap_line = parse_ktap_header(lines, test, printer) test.log.extend(parse_diagnostic(lines)) parse_test_plan(lines, test) parent_test = True else: # If not the main test, attempt to parse a test header containing # the KTAP version line and/or subtest header line - ktap_line = parse_ktap_header(lines, test) + ktap_line = parse_ktap_header(lines, test, printer) subtest_line = parse_test_header(lines, test) parent_test = (ktap_line or subtest_line) if parent_test: @@ -740,7 +749,7 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: # to parse test plan and print test header test.log.extend(parse_diagnostic(lines)) parse_test_plan(lines, test) - print_test_header(test) + print_test_header(test, printer) expected_count = test.expected_count subtests = [] test_num = 1 @@ -758,16 +767,16 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: # If parser reaches end of test before # parsing expected number of subtests, print # crashed subtest and record error - test.add_error('missing expected subtest!') + test.add_error(printer, 'missing expected subtest!') sub_test.log.extend(sub_log) test.counts.add_status( TestStatus.TEST_CRASHED) - print_test_result(sub_test) + print_test_result(sub_test, printer) else: test.log.extend(sub_log) break else: - sub_test = parse_test(lines, test_num, sub_log, True) + sub_test = parse_test(lines, test_num, sub_log, True, printer) subtests.append(sub_test) test_num += 1 test.subtests = subtests @@ -775,51 +784,51 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: # If not main test, look for test result line test.log.extend(parse_diagnostic(lines)) if test.name != "" and not peek_test_name_match(lines, test): - test.add_error('missing subtest result line!') + test.add_error(printer, 'missing subtest result line!') else: - parse_test_result(lines, test, expected_num) + parse_test_result(lines, test, expected_num, printer) # Check for there being no subtests within parent test if parent_test and len(subtests) == 0: # Don't override a bad status if this test had one reported. # Assumption: no subtests means CRASHED is from Test.__init__() if test.status in (TestStatus.TEST_CRASHED, TestStatus.SUCCESS): - print_log(test.log) + print_log(test.log, printer) test.status = TestStatus.NO_TESTS - test.add_error('0 tests run!') + test.add_error(printer, '0 tests run!') # Add statuses to TestCounts attribute in Test object bubble_up_test_results(test) if parent_test and is_subtest: # If test has subtests and is not the main test object, print # footer. - print_test_footer(test) + print_test_footer(test, printer) elif is_subtest: - print_test_result(test) + print_test_result(test, printer) return test -def parse_run_tests(kernel_output: Iterable[str]) -> Test: +def parse_run_tests(kernel_output: Iterable[str], printer: Printer) -> Test: """ Using kernel output, extract KTAP lines, parse the lines for test results and print condensed test results and summary line. Parameters: kernel_output - Iterable object contains lines of kernel output + printer - Printer object to output results Return: Test - the main test object with all subtests. """ - stdout.print_with_timestamp(DIVIDER) + printer.print_with_timestamp(DIVIDER) lines = extract_tap_lines(kernel_output) test = Test() if not lines: test.name = '<missing>' - test.add_error('Could not find any KTAP output. Did any KUnit tests run?') + test.add_error(printer, 'Could not find any KTAP output. Did any KUnit tests run?') test.status = TestStatus.FAILURE_TO_PARSE_TESTS else: - test = parse_test(lines, 0, [], False) + test = parse_test(lines, 0, [], False, printer) if test.status != TestStatus.NO_TESTS: test.status = test.counts.get_status() - stdout.print_with_timestamp(DIVIDER) - print_summary_line(test) + printer.print_with_timestamp(DIVIDER) return test diff --git a/tools/testing/kunit/kunit_printer.py b/tools/testing/kunit/kunit_printer.py index 015adf87dc2c..2c55b4b67bfc 100644 --- a/tools/testing/kunit/kunit_printer.py +++ b/tools/testing/kunit/kunit_printer.py @@ -17,10 +17,12 @@ class Printer: def __init__(self, output: typing.IO[str]): self._output = output - self._use_color = output.isatty() + if output is not None: + self._use_color = output.isatty() def print(self, message: str) -> None: - print(message, file=self._output) + if self._output is not None: + print(message, file=self._output) def print_with_timestamp(self, message: str) -> None: ts = datetime.datetime.now().strftime('%H:%M:%S') @@ -46,3 +48,4 @@ class Printer: # Provides a default instance that prints to stdout stdout = Printer(sys.stdout) +null_printer = Printer(None) diff --git a/tools/testing/kunit/kunit_tool_test.py b/tools/testing/kunit/kunit_tool_test.py index 2beb7327e53f..02aa296d8850 100755 --- a/tools/testing/kunit/kunit_tool_test.py +++ b/tools/testing/kunit/kunit_tool_test.py @@ -23,6 +23,7 @@ import kunit_parser import kunit_kernel import kunit_json import kunit +from kunit_printer import stdout test_tmpdir = '' abs_test_data_dir = '' @@ -139,28 +140,28 @@ class KUnitParserTest(unittest.TestCase): def test_parse_successful_test_log(self): all_passed_log = test_data_path('test_is_test_passed-all_passed.log') with open(all_passed_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) self.assertEqual(result.counts.errors, 0) def test_parse_successful_nested_tests_log(self): all_passed_log = test_data_path('test_is_test_passed-all_passed_nested.log') with open(all_passed_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) self.assertEqual(result.counts.errors, 0) def test_kselftest_nested(self): kselftest_log = test_data_path('test_is_test_passed-kselftest.log') with open(kselftest_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) self.assertEqual(result.counts.errors, 0) def test_parse_failed_test_log(self): failed_log = test_data_path('test_is_test_passed-failure.log') with open(failed_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.FAILURE, result.status) self.assertEqual(result.counts.errors, 0) @@ -168,7 +169,7 @@ class KUnitParserTest(unittest.TestCase): empty_log = test_data_path('test_is_test_passed-no_tests_run_no_header.log') with open(empty_log) as file: result = kunit_parser.parse_run_tests( - kunit_parser.extract_tap_lines(file.readlines())) + kunit_parser.extract_tap_lines(file.readlines()), stdout) self.assertEqual(0, len(result.subtests)) self.assertEqual(kunit_parser.TestStatus.FAILURE_TO_PARSE_TESTS, result.status) self.assertEqual(result.counts.errors, 1) @@ -179,7 +180,7 @@ class KUnitParserTest(unittest.TestCase): with open(missing_plan_log) as file: result = kunit_parser.parse_run_tests( kunit_parser.extract_tap_lines( - file.readlines())) + file.readlines()), stdout) # A missing test plan is not an error. self.assertEqual(result.counts, kunit_parser.TestCounts(passed=10, errors=0)) self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) @@ -188,7 +189,7 @@ class KUnitParserTest(unittest.TestCase): header_log = test_data_path('test_is_test_passed-no_tests_run_with_header.log') with open(header_log) as file: result = kunit_parser.parse_run_tests( - kunit_parser.extract_tap_lines(file.readlines())) + kunit_parser.extract_tap_lines(file.readlines()), stdout) self.assertEqual(0, len(result.subtests)) self.assertEqual(kunit_parser.TestStatus.NO_TESTS, result.status) self.assertEqual(result.counts.errors, 1) @@ -197,7 +198,7 @@ class KUnitParserTest(unittest.TestCase): no_plan_log = test_data_path('test_is_test_passed-no_tests_no_plan.log') with open(no_plan_log) as file: result = kunit_parser.parse_run_tests( - kunit_parser.extract_tap_lines(file.readlines())) + kunit_parser.extract_tap_lines(file.readlines()), stdout) self.assertEqual(0, len(result.subtests[0].subtests[0].subtests)) self.assertEqual( kunit_parser.TestStatus.NO_TESTS, @@ -210,7 +211,7 @@ class KUnitParserTest(unittest.TestCase): print_mock = mock.patch('kunit_printer.Printer.print').start() with open(crash_log) as file: result = kunit_parser.parse_run_tests( - kunit_parser.extract_tap_lines(file.readlines())) + kunit_parser.extract_tap_lines(file.readlines()), stdout) print_mock.assert_any_call(StrContains('Could not find any KTAP output.')) print_mock.stop() self.assertEqual(0, len(result.subtests)) @@ -219,7 +220,7 @@ class KUnitParserTest(unittest.TestCase): def test_skipped_test(self): skipped_log = test_data_path('test_skip_tests.log') with open(skipped_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) # A skipped test does not fail the whole suite. self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) @@ -228,7 +229,7 @@ class KUnitParserTest(unittest.TestCase): def test_skipped_all_tests(self): skipped_log = test_data_path('test_skip_all_tests.log') with open(skipped_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.SKIPPED, result.status) self.assertEqual(result.counts, kunit_parser.TestCounts(skipped=5)) @@ -236,7 +237,7 @@ class KUnitParserTest(unittest.TestCase): def test_ignores_hyphen(self): hyphen_log = test_data_path('test_strip_hyphen.log') with open(hyphen_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) # A skipped test does not fail the whole suite. self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) @@ -250,7 +251,7 @@ class KUnitParserTest(unittest.TestCase): def test_ignores_prefix_printk_time(self): prefix_log = test_data_path('test_config_printk_time.log') with open(prefix_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) self.assertEqual('kunit-resource-test', result.subtests[0].name) self.assertEqual(result.counts.errors, 0) @@ -258,7 +259,7 @@ class KUnitParserTest(unittest.TestCase): def test_ignores_multiple_prefixes(self): prefix_log = test_data_path('test_multiple_prefixes.log') with open(prefix_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) self.assertEqual('kunit-resource-test', result.subtests[0].name) self.assertEqual(result.counts.errors, 0) @@ -266,7 +267,7 @@ class KUnitParserTest(unittest.TestCase): def test_prefix_mixed_kernel_output(self): mixed_prefix_log = test_data_path('test_interrupted_tap_output.log') with open(mixed_prefix_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) self.assertEqual('kunit-resource-test', result.subtests[0].name) self.assertEqual(result.counts.errors, 0) @@ -274,7 +275,7 @@ class KUnitParserTest(unittest.TestCase): def test_prefix_poundsign(self): pound_log = test_data_path('test_pound_sign.log') with open(pound_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) self.assertEqual('kunit-resource-test', result.subtests[0].name) self.assertEqual(result.counts.errors, 0) @@ -282,7 +283,7 @@ class KUnitParserTest(unittest.TestCase): def test_kernel_panic_end(self): panic_log = test_data_path('test_kernel_panic_interrupt.log') with open(panic_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.TEST_CRASHED, result.status) self.assertEqual('kunit-resource-test', result.subtests[0].name) self.assertGreaterEqual(result.counts.errors, 1) @@ -290,7 +291,7 @@ class KUnitParserTest(unittest.TestCase): def test_pound_no_prefix(self): pound_log = test_data_path('test_pound_no_prefix.log') with open(pound_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) self.assertEqual('kunit-resource-test', result.subtests[0].name) self.assertEqual(result.counts.errors, 0) @@ -310,7 +311,7 @@ class KUnitParserTest(unittest.TestCase): not ok 2 - test2 not ok 1 - some_failed_suite """ - result = kunit_parser.parse_run_tests(output.splitlines()) + result = kunit_parser.parse_run_tests(output.splitlines(), stdout) self.assertEqual(kunit_parser.TestStatus.FAILURE, result.status) self.assertEqual(kunit_parser._summarize_failed_tests(result), @@ -319,7 +320,7 @@ class KUnitParserTest(unittest.TestCase): def test_ktap_format(self): ktap_log = test_data_path('test_parse_ktap_output.log') with open(ktap_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) self.assertEqual(result.counts, kunit_parser.TestCounts(passed=3)) self.assertEqual('suite', result.subtests[0].name) self.assertEqual('case_1', result.subtests[0].subtests[0].name) @@ -328,13 +329,13 @@ class KUnitParserTest(unittest.TestCase): def test_parse_subtest_header(self): ktap_log = test_data_path('test_parse_subtest_header.log') with open(ktap_log) as file: - kunit_parser.parse_run_tests(file.readlines()) + kunit_parser.parse_run_tests(file.readlines(), stdout) self.print_mock.assert_any_call(StrContains('suite (1 subtest)')) def test_parse_attributes(self): ktap_log = test_data_path('test_parse_attributes.log') with open(ktap_log) as file: - result = kunit_parser.parse_run_tests(file.readlines()) + result = kunit_parser.parse_run_tests(file.readlines(), stdout) # Test should pass with no errors self.assertEqual(result.counts, kunit_parser.TestCounts(passed=1, errors=0)) @@ -355,7 +356,7 @@ class KUnitParserTest(unittest.TestCase): Indented more. not ok 1 test1 """ - result = kunit_parser.parse_run_tests(output.splitlines()) + result = kunit_parser.parse_run_tests(output.splitlines(), stdout) self.assertEqual(kunit_parser.TestStatus.FAILURE, result.status) self.print_mock.assert_any_call(StrContains('Test output.')) @@ -544,7 +545,7 @@ class KUnitJsonTest(unittest.TestCase): def _json_for(self, log_file): with open(test_data_path(log_file)) as file: - test_result = kunit_parser.parse_run_tests(file) + test_result = kunit_parser.parse_run_tests(file, stdout) json_obj = kunit_json.get_json_result( test=test_result, metadata=kunit_json.Metadata()) @@ -810,7 +811,7 @@ class KUnitMainTest(unittest.TestCase): self.linux_source_mock.run_kernel.return_value = ['TAP version 14', 'init: random output'] + want got = kunit._list_tests(self.linux_source_mock, - kunit.KunitExecRequest(None, None, '.kunit', 300, 'suite*', '', None, None, 'suite', False, False)) + kunit.KunitExecRequest(None, None, False, '.kunit', 300, 'suite*', '', None, None, 'suite', False, False)) self.assertEqual(got, want) # Should respect the user's filter glob when listing tests. self.linux_source_mock.run_kernel.assert_called_once_with( @@ -823,7 +824,7 @@ class KUnitMainTest(unittest.TestCase): # Should respect the user's filter glob when listing tests. mock_tests.assert_called_once_with(mock.ANY, - kunit.KunitExecRequest(None, None, '.kunit', 300, 'suite*.test*', '', None, None, 'suite', False, False)) + kunit.KunitExecRequest(None, None, False, '.kunit', 300, 'suite*.test*', '', None, None, 'suite', False, False)) self.linux_source_mock.run_kernel.assert_has_calls([ mock.call(args=None, build_dir='.kunit', filter_glob='suite.test*', filter='', filter_action=None, timeout=300), mock.call(args=None, build_dir='.kunit', filter_glob='suite2.test*', filter='', filter_action=None, timeout=300), @@ -836,7 +837,7 @@ class KUnitMainTest(unittest.TestCase): # Should respect the user's filter glob when listing tests. mock_tests.assert_called_once_with(mock.ANY, - kunit.KunitExecRequest(None, None, '.kunit', 300, 'suite*', '', None, None, 'test', False, False)) + kunit.KunitExecRequest(None, None, False, '.kunit', 300, 'suite*', '', None, None, 'test', False, False)) self.linux_source_mock.run_kernel.assert_has_calls([ mock.call(args=None, build_dir='.kunit', filter_glob='suite.test1', filter='', filter_action=None, timeout=300), mock.call(args=None, build_dir='.kunit', filter_glob='suite.test2', filter='', filter_action=None, timeout=300), base-commit: 9852d85ec9d492ebef56dc5f229416c925758edc -- 2.47.0.163.g1226f6d8fa-goog

1 year, 1 month

2
2
0 0

[PATCH 0/3] KVM: x86: Small changes to support VMware guests

by Zack Rusin

To be able to switch VMware products running on Linux to KVM some minor changes are required to let KVM run/resume unmodified VMware guests. First allow enabling of the VMware backdoor via an api. Currently the setting of the VMware backdoor is limited to kernel boot parameters, which forces all VM's running on a host to either run with or without the VMware backdoor. Add a simple cap to allow enabling of the VMware backdoor on a per VM basis. The default for that setting remains the kvm.enable_vmware_backdoor boot parameter (which is false by default) and can be changed on a per-vm basis via the KVM_CAP_X86_VMWARE_BACKDOOR cap. Second add a cap to forward hypercalls to userspace. I know that in general that's frowned upon but VMwre guests send quite a few hypercalls from userspace and it would be both impractical and largelly impossible to handle all in the kernel. The change is trivial and I'd be maintaining this code so I hope it's not a big deal. The third commit just adds a self-test for the "forward VMware hypercalls to userspace" functionality. Cc: Doug Covelli <doug.covelli(a)broadcom.com> Cc: Paolo Bonzini <pbonzini(a)redhat.com> Cc: Jonathan Corbet <corbet(a)lwn.net> Cc: Sean Christopherson <seanjc(a)google.com> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: Borislav Petkov <bp(a)alien8.de> Cc: Dave Hansen <dave.hansen(a)linux.intel.com> Cc: x86(a)kernel.org Cc: "H. Peter Anvin" <hpa(a)zytor.com> Cc: Shuah Khan <shuah(a)kernel.org> Cc: Namhyung Kim <namhyung(a)kernel.org> Cc: Arnaldo Carvalho de Melo <acme(a)redhat.com> Cc: Isaku Yamahata <isaku.yamahata(a)intel.com> Cc: Joel Stanley <joel(a)jms.id.au> Cc: Zack Rusin <zack.rusin(a)broadcom.com> Cc: kvm(a)vger.kernel.org Cc: linux-doc(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Cc: linux-kselftest(a)vger.kernel.org Zack Rusin (3): KVM: x86: Allow enabling of the vmware backdoor via a cap KVM: x86: Add support for VMware guest specific hypercalls KVM: selftests: x86: Add a test for KVM_CAP_X86_VMWARE_HYPERCALL Documentation/virt/kvm/api.rst | 56 ++++++++- arch/x86/include/asm/kvm_host.h | 2 + arch/x86/kvm/emulate.c | 5 +- arch/x86/kvm/svm/svm.c | 6 +- arch/x86/kvm/vmx/vmx.c | 4 +- arch/x86/kvm/x86.c | 47 ++++++++ arch/x86/kvm/x86.h | 7 +- include/uapi/linux/kvm.h | 2 + tools/include/uapi/linux/kvm.h | 2 + tools/testing/selftests/kvm/Makefile | 1 + .../kvm/x86_64/vmware_hypercall_test.c | 108 ++++++++++++++++++ 11 files changed, 227 insertions(+), 13 deletions(-) create mode 100644 tools/testing/selftests/kvm/x86_64/vmware_hypercall_test.c -- 2.43.0

1 year, 1 month

4
14
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[PATCH] kunit: string-stream: Fix a UAF bug in kunit_init_suite()

by Jinjie Ruan

In kunit_debugfs_create_suite(), if alloc_string_stream() fails in the kunit_suite_for_each_test_case() loop, the "suite->log = stream" has assigned before, and the error path only free the suite->log's stream memory but not set it to NULL in string_stream_destroy(), so the later string_stream_clear() of suite->log in kunit_init_suite() will cause below UAF bug. Set stream pointer to NULL after free in string_stream_destroy() to fix it. Unable to handle kernel paging request at virtual address 006440150000030d Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [006440150000030d] address between user and kernel address ranges Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: iio_test_gts industrialio_gts_helper cfg80211 rfkill ipv6 [last unloaded: iio_test_gts] CPU: 5 UID: 0 PID: 6253 Comm: modprobe Tainted: G B W N 6.12.0-rc4+ #458 Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST Hardware name: linux,dummy-virt (DT) pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : string_stream_clear+0x54/0x1ac lr : string_stream_clear+0x1a8/0x1ac sp : ffffffc080b47410 x29: ffffffc080b47410 x28: 006440550000030d x27: ffffff80c96b5e98 x26: ffffff80c96b5e80 x25: ffffffe461b3f6c0 x24: 0000000000000003 x23: ffffff80c96b5e88 x22: 1ffffff019cdf4fc x21: dfffffc000000000 x20: ffffff80ce6fa7e0 x19: 032202a80000186d x18: 0000000000001840 x17: 0000000000000000 x16: 0000000000000000 x15: ffffffe45c355cb4 x14: ffffffe45c35589c x13: ffffffe45c03da78 x12: ffffffb810168e75 x11: 1ffffff810168e74 x10: ffffffb810168e74 x9 : dfffffc000000000 x8 : 0000000000000004 x7 : 0000000000000003 x6 : 0000000000000001 x5 : ffffffc080b473a0 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000001 x1 : ffffffe462fbf620 x0 : dfffffc000000000 Call trace: string_stream_clear+0x54/0x1ac __kunit_test_suites_init+0x108/0x1d8 kunit_exec_run_tests+0xb8/0x100 kunit_module_notify+0x400/0x55c notifier_call_chain+0xfc/0x3b4 blocking_notifier_call_chain+0x68/0x9c do_init_module+0x24c/0x5c8 load_module+0x4acc/0x4e90 init_module_from_file+0xd4/0x128 idempotent_init_module+0x2d4/0x57c __arm64_sys_finit_module+0xac/0x100 invoke_syscall+0x6c/0x258 el0_svc_common.constprop.0+0x160/0x22c do_el0_svc+0x44/0x5c el0_svc+0x48/0xb8 el0t_64_sync_handler+0x13c/0x158 el0t_64_sync+0x190/0x194 Code: f9400753 d2dff800 f2fbffe0 d343fe7c (38e06b80) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Oops: Fatal exception Cc: stable(a)vger.kernel.org Fixes: a3fdf784780c ("kunit: string-stream: Decouple string_stream from kunit") Signed-off-by: Jinjie Ruan <ruanjinjie(a)huawei.com> --- lib/kunit/string-stream.c | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/kunit/string-stream.c b/lib/kunit/string-stream.c index 54f4fdcbfac8..00ad518b730b 100644 --- a/lib/kunit/string-stream.c +++ b/lib/kunit/string-stream.c @@ -178,6 +178,7 @@ void string_stream_destroy(struct string_stream *stream) string_stream_clear(stream); kfree(stream); + stream = NULL; } static void resource_free_string_stream(void *p) -- 2.34.1

1 year, 1 month

3
6
0 0

[PATCH v3] lib/math: Add int_sqrt test suite

by Luis Felipe Hernandez

Adds test suite for integer based square root function. The test suite is designed to verify the correctness of the int_sqrt() math library function. Signed-off-by: Luis Felipe Hernandez <luis.hernandez093(a)gmail.com> --- Changes in v2 - Add new line at the end of int_sqrt_kunit.c - Add explicit header includes for MODULE_* macros, strscpy, and ULONG_MAX Changes in v3 - Remove unnecesary new line after Kconfig entry for INT_SQRT_KUNIT_TEST - Correct int_sqrt instances with int_sqrt() in commit message and kconfig entry desc - Fix limits.h header include path --- lib/Kconfig.debug | 15 ++++++++++ lib/math/Makefile | 1 + lib/math/tests/Makefile | 1 + lib/math/tests/int_sqrt_kunit.c | 51 +++++++++++++++++++++++++++++++++ 4 files changed, 68 insertions(+) create mode 100644 lib/math/tests/int_sqrt_kunit.c diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 7312ae7c3cc5..c83f5dc9bb48 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2993,6 +2993,21 @@ config TEST_OBJPOOL If unsure, say N. +config INT_SQRT_KUNIT_TEST + tristate "Integer square root test test" if !KUNIT_ALL_TESTS + depends on KUNIT + default KUNIT_ALL_TESTS + help + This option enables the KUnit test suite for the int_sqrt() function, + which performs square root calculation. The test suite checks + various scenarios, including edge cases, to ensure correctness. + + Enabling this option will include tests that check various scenarios + and edge cases to ensure the accuracy and reliability of the square root + function. + + If unsure, say N + endif # RUNTIME_TESTING_MENU config ARCH_USE_MEMTEST diff --git a/lib/math/Makefile b/lib/math/Makefile index 3ef11305f8d2..25bcb968b369 100644 --- a/lib/math/Makefile +++ b/lib/math/Makefile @@ -9,3 +9,4 @@ obj-$(CONFIG_INT_POW_TEST) += tests/int_pow_kunit.o obj-$(CONFIG_TEST_DIV64) += test_div64.o obj-$(CONFIG_TEST_MULDIV64) += test_mul_u64_u64_div_u64.o obj-$(CONFIG_RATIONAL_KUNIT_TEST) += rational-test.o +obj-y += tests/ diff --git a/lib/math/tests/Makefile b/lib/math/tests/Makefile index 6a169123320a..e1a79f093b2d 100644 --- a/lib/math/tests/Makefile +++ b/lib/math/tests/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_INT_POW_TEST) += int_pow_kunit.o +obj-$(CONFIG_INT_SQRT_KUNIT_TEST) += int_sqrt_kunit.o diff --git a/lib/math/tests/int_sqrt_kunit.c b/lib/math/tests/int_sqrt_kunit.c new file mode 100644 index 000000000000..3590142d2012 --- /dev/null +++ b/lib/math/tests/int_sqrt_kunit.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <kunit/test.h> +#include <linux/limits.h> +#include <linux/math.h> +#include <linux/module.h> +#include <linux/string.h> + +struct test_case_params { + unsigned long x; + unsigned long expected_result; + const char *name; +}; + +static const struct test_case_params params[] = { + { 0, 0, "edge-case: square root of 0" }, + { 4, 2, "perfect square: square root of 4" }, + { 81, 9, "perfect square: square root of 9" }, + { 2, 1, "non-perfect square: square root of 2" }, + { 5, 2, "non-perfect square: square root of 5"}, + { ULONG_MAX, 4294967295, "large input"}, +}; + +static void get_desc(const struct test_case_params *tc, char *desc) +{ + strscpy(desc, tc->name, KUNIT_PARAM_DESC_SIZE); +} + +KUNIT_ARRAY_PARAM(int_sqrt, params, get_desc); + +static void int_sqrt_test(struct kunit *test) +{ + const struct test_case_params *tc = (const struct test_case_params *)test->param_value; + + KUNIT_EXPECT_EQ(test, tc->expected_result, int_sqrt(tc->x)); +} + +static struct kunit_case math_int_sqrt_test_cases[] = { + KUNIT_CASE_PARAM(int_sqrt_test, int_sqrt_gen_params), + {} +}; + +static struct kunit_suite int_sqrt_test_suite = { + .name = "math-int_sqrt", + .test_cases = math_int_sqrt_test_cases, +}; + +kunit_test_suites(&int_sqrt_test_suite); + +MODULE_DESCRIPTION("math.int_sqrt KUnit test suite"); +MODULE_LICENSE("GPL"); -- 2.47.0

1 year, 1 month

3
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