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[PATCH printk v1] printk: ringbuffer: Add KUnit test

by John Ogness

From: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> The KUnit test validates the correct operation of the ringbuffer. A separate dedicated ringbuffer is used so that the global printk ringbuffer is not touched. Co-developed-by: John Ogness <john.ogness(a)linutronix.de> Signed-off-by: John Ogness <john.ogness(a)linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> --- For those not familiar with KUnit, you can easily run this test doing something like this: $ ./tools/testing/kunit/kunit.py run \ --arch=x86_64 \ --qemu_args "-enable-kvm -smp 8" \ --kunitconfig kernel/printk init/Kconfig | 12 + kernel/printk/.kunitconfig | 3 + kernel/printk/Makefile | 2 + kernel/printk/printk_ringbuffer.c | 4 + kernel/printk/printk_ringbuffer_test.c | 350 +++++++++++++++++++++++++ 5 files changed, 371 insertions(+) create mode 100644 kernel/printk/.kunitconfig create mode 100644 kernel/printk/printk_ringbuffer_test.c diff --git a/init/Kconfig b/init/Kconfig index 3b6ca7cce03b..46d144908191 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1576,6 +1576,18 @@ config PRINTK very difficult to diagnose system problems, saying N here is strongly discouraged. +config PRINTK_RINGBUFFER_TEST + tristate "Test for the printk ringbuffer" if !KUNIT_ALL_TESTS + depends on PRINTK && KUNIT + default KUNIT_ALL_TESTS + help + This builds the printk ringbuffer KUnit test suite. + + For more information on KUnit and unit tests in general, please refer + to the KUnit documentation. + + If unsure, say N. + config BUG bool "BUG() support" if EXPERT default y diff --git a/kernel/printk/.kunitconfig b/kernel/printk/.kunitconfig new file mode 100644 index 000000000000..8d31a5c19053 --- /dev/null +++ b/kernel/printk/.kunitconfig @@ -0,0 +1,3 @@ +CONFIG_KUNIT=y +CONFIG_SMP=y +CONFIG_PRINTK_RINGBUFFER_TEST=y diff --git a/kernel/printk/Makefile b/kernel/printk/Makefile index 39a2b61c7232..edb5a4cacf67 100644 --- a/kernel/printk/Makefile +++ b/kernel/printk/Makefile @@ -7,3 +7,5 @@ obj-$(CONFIG_PRINTK_INDEX) += index.o obj-$(CONFIG_PRINTK) += printk_support.o printk_support-y := printk_ringbuffer.o printk_support-$(CONFIG_SYSCTL) += sysctl.o + +obj-$(CONFIG_PRINTK_RINGBUFFER_TEST) += printk_ringbuffer_test.o diff --git a/kernel/printk/printk_ringbuffer.c b/kernel/printk/printk_ringbuffer.c index 88e8f3a61922..57b80d262cb7 100644 --- a/kernel/printk/printk_ringbuffer.c +++ b/kernel/printk/printk_ringbuffer.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 +#include <kunit/visibility.h> #include <linux/kernel.h> #include <linux/irqflags.h> #include <linux/string.h> @@ -1685,6 +1686,7 @@ bool prb_reserve(struct prb_reserved_entry *e, struct printk_ringbuffer *rb, memset(r, 0, sizeof(*r)); return false; } +EXPORT_SYMBOL_IF_KUNIT(prb_reserve); /* Commit the data (possibly finalizing it) and restore interrupts. */ static void _prb_commit(struct prb_reserved_entry *e, unsigned long state_val) @@ -1759,6 +1761,7 @@ void prb_commit(struct prb_reserved_entry *e) if (head_id != e->id) desc_make_final(e->rb, e->id); } +EXPORT_SYMBOL_IF_KUNIT(prb_commit); /** * prb_final_commit() - Commit and finalize (previously reserved) data to @@ -2181,6 +2184,7 @@ bool prb_read_valid(struct printk_ringbuffer *rb, u64 seq, { return _prb_read_valid(rb, &seq, r, NULL); } +EXPORT_SYMBOL_IF_KUNIT(prb_read_valid); /** * prb_read_valid_info() - Non-blocking read of meta data for a requested diff --git a/kernel/printk/printk_ringbuffer_test.c b/kernel/printk/printk_ringbuffer_test.c new file mode 100644 index 000000000000..79331ea2b739 --- /dev/null +++ b/kernel/printk/printk_ringbuffer_test.c @@ -0,0 +1,350 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/kthread.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/random.h> +#include <linux/sched/clock.h> +#include <linux/slab.h> +#include <linux/wait.h> + +#include <kunit/test.h> + +#include "printk_ringbuffer.h" + +/* + * This KUnit tests the data integrity of the lockless printk_ringbuffer. + * From multiple CPUs it writes messages of varying length and content while + * a reader validates the correctness of the messages. + * + * IMPORTANT: The more CPUs you can use for this KUnit, the better! + * + * The test works by starting "num_online_cpus() - 1" writer threads, each + * pinned to their own CPU. Each writer thread loops, writing data of varying + * length into a printk_ringbuffer as fast as possible. The data content is + * an embedded data struct followed by string content repeating the byte: + * + * 'A' + CPUID + * + * A reader thread is started on the remaining online CPU and ensures that + * embedded struct content is consistent with the string and that the string + * is terminated and is composed of the same repeating byte as its first byte. + * + * Because the threads are running in such tight loops, they will call + * schedule() from time to time so the system stays functional. + * + * If the reader encounters an error, the test is aborted and some + * information about the error is provided via printk. The runtime of + * the test can be configured with the runtime_ms module parameter. + * + * Note that the test is performed on a separate printk_ringbuffer instance + * and not the instance used by printk(). + */ + +static unsigned long runtime_ms = 10000; +module_param(runtime_ms, ulong, 0400); + +/* used by writers to signal reader of new records */ +static DECLARE_WAIT_QUEUE_HEAD(test_wait); + +/* test data structure */ +struct rbdata { + unsigned int len; + char text[] __counted_by(len); +}; + +#define MAX_RBDATA_LEN (0x7f + 1) +#define MAX_RECORD_SIZE (sizeof(struct rbdata) + MAX_RBDATA_LEN + 1) + +static struct test_running { + int runstate; + unsigned long num; + struct kunit *test; +} *test_running; +static int halt_test; + +static void fail_record(struct kunit *test, struct rbdata *dat, u64 seq) +{ + char buf[MAX_RBDATA_LEN + 1]; + + snprintf(buf, sizeof(buf), "%s", dat->text); + buf[sizeof(buf) - 1] = 0; + + KUNIT_FAIL(test, "BAD RECORD: seq=%llu len=%u text=%s\n", + seq, dat->len, dat->len < sizeof(buf) ? buf : "<invalid>"); +} + +static bool check_data(struct rbdata *dat) +{ + unsigned int len; + + len = strnlen(dat->text, MAX_RBDATA_LEN + 1); + + /* Sane length? */ + if (len != dat->len || !len || len > MAX_RBDATA_LEN) + return false; + + /* String repeats with the same character? */ + while (len) { + len--; + if (dat->text[len] != dat->text[0]) + return false; + } + + return true; +} + +/* Equivalent to CONFIG_LOG_BUF_SHIFT=13 */ +DEFINE_PRINTKRB(test_rb, 8, 5); + +static int prbtest_writer(void *data) +{ + struct test_running *tr = data; + char text_id = 'A' + tr->num; + struct prb_reserved_entry e; + unsigned long count = 0; + struct printk_record r; + u64 min_ns = (u64)-1; + struct rbdata *dat; + u64 total_ns = 0; + u64 max_ns = 0; + u64 post_ns; + u64 pre_ns; + int len; + + set_cpus_allowed_ptr(current, cpumask_of(tr->num)); + + kunit_info(tr->test, "start thread %03lu (writer)\n", tr->num); + + tr->runstate = 1; + + for (;;) { + /* +2 to ensure at least 1 character + terminator. */ + len = sizeof(struct rbdata) + (get_random_u32() & 0x7f) + 2; + + /* specify the text sizes for reservation */ + prb_rec_init_wr(&r, len); + + pre_ns = local_clock(); + + if (prb_reserve(&e, &test_rb, &r)) { + r.info->text_len = len; + + len -= sizeof(struct rbdata) + 1; + + dat = (struct rbdata *)&r.text_buf[0]; + dat->len = len; + memset(&dat->text[0], text_id, len); + dat->text[len] = 0; + + prb_commit(&e); + + post_ns = local_clock(); + + wake_up_interruptible(&test_wait); + + post_ns -= pre_ns; + if (post_ns < min_ns) + min_ns = post_ns; + if (post_ns > max_ns) + max_ns = post_ns; + total_ns += post_ns; + } + + if ((count++ & 0x3fff) == 0) + schedule(); + + if (READ_ONCE(halt_test) == 1) + break; + } + + kunit_info(tr->test, "end thread %03lu: wrote=%lu min_ns=%llu avg_ns=%llu max_ns=%llu\n", + tr->num, count, min_ns, total_ns / (u64)count, max_ns); + + tr->runstate = 2; + + return 0; +} + +static int prbtest_reader(void *data) +{ + struct test_running *tr = data; + char text_buf[MAX_RECORD_SIZE]; + unsigned long total_lost = 0; + unsigned long max_lost = 0; + unsigned long count = 0; + struct printk_info info; + struct printk_record r; + int did_sched = 1; + u64 seq = 0; + + set_cpus_allowed_ptr(current, cpumask_of(tr->num)); + + prb_rec_init_rd(&r, &info, &text_buf[0], sizeof(text_buf)); + + kunit_info(tr->test, "start thread %03lu (reader)\n", tr->num); + + tr->runstate = 1; + + while (!wait_event_interruptible(test_wait, + kthread_should_stop() || + prb_read_valid(&test_rb, seq, &r))) { + bool error = false; + + if (kthread_should_stop()) + break; + /* check/track the sequence */ + if (info.seq < seq) { + KUNIT_FAIL(tr->test, "BAD SEQ READ: request=%llu read=%llu\n", + seq, info.seq); + error = true; + } else if (info.seq != seq && !did_sched) { + total_lost += info.seq - seq; + if (max_lost < info.seq - seq) + max_lost = info.seq - seq; + } + + if (!check_data((struct rbdata *)&r.text_buf[0])) { + fail_record(tr->test, (struct rbdata *)&r.text_buf[0], info.seq); + error = true; + } + + if (error) + WRITE_ONCE(halt_test, 1); + + did_sched = 0; + if ((count++ & 0x3fff) == 0) { + did_sched = 1; + schedule(); + } + + if (READ_ONCE(halt_test) == 1) + break; + + seq = info.seq + 1; + } + + kunit_info(tr->test, + "end thread %03lu: read=%lu seq=%llu total_lost=%lu max_lost=%lu\n", + tr->num, count, info.seq, total_lost, max_lost); + + while (!kthread_should_stop()) + msleep(1000); + tr->runstate = 2; + + return 0; +} + +static int module_test_running; +static struct task_struct *reader_thread; + +static int start_test(void *arg) +{ + struct kunit *test = arg; + struct task_struct *thread; + unsigned long i; + int num_cpus; + + num_cpus = num_online_cpus(); + if (num_cpus == 1) + kunit_skip(test, "need >1 CPUs for at least one reader and writer"); + + test_running = kcalloc(num_cpus, sizeof(*test_running), GFP_KERNEL); + KUNIT_ASSERT_NOT_NULL(test, test_running); + + module_test_running = 1; + + kunit_info(test, "starting test\n"); + + for (i = 0; i < num_cpus; i++) { + test_running[i].test = test; + test_running[i].num = i; + if (i < num_cpus - 1) { + thread = kthread_run(prbtest_writer, &test_running[i], + "prbtest writer"); + } else { + thread = kthread_run(prbtest_reader, &test_running[i], + "prbtest reader"); + reader_thread = thread; + } + if (IS_ERR(thread)) { + kunit_err(test, "unable to create thread %lu\n", i); + test_running[i].runstate = 2; + } + } + + /* wait until all threads finish */ + for (;;) { + msleep(1000); + + for (i = 0; i < num_cpus; i++) { + if (test_running[i].runstate < 2) + break; + } + if (i == num_cpus) + break; + } + + kunit_info(test, "completed test\n"); + + module_test_running = 0; + + return 0; +} + +static void test_readerwriter(struct kunit *test) +{ + static bool already_run; + int num_cpus; + int i; + + if (already_run) + KUNIT_FAIL_AND_ABORT(test, "test can only be run once"); + already_run = true; + + kunit_info(test, "running for %lu ms\n", runtime_ms); + + kthread_run(start_test, test, "prbtest"); + + /* wait until all threads active */ + num_cpus = num_online_cpus(); + for (;;) { + msleep(1000); + + for (i = 0; i < num_cpus; i++) { + if (test_running[i].runstate == 0) + break; + } + if (i == num_cpus) + break; + } + + msleep(runtime_ms); + + if (reader_thread && !IS_ERR(reader_thread)) + kthread_stop(reader_thread); + + WRITE_ONCE(halt_test, 1); + + while (module_test_running) + msleep(1000); + kfree(test_running); +} + +static struct kunit_case prb_test_cases[] = { + KUNIT_CASE_SLOW(test_readerwriter), + {} +}; + +static struct kunit_suite prb_test_suite = { + .name = "printk-ringbuffer", + .test_cases = prb_test_cases, +}; +kunit_test_suite(prb_test_suite); + +MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING); +MODULE_AUTHOR("John Ogness <john.ogness(a)linutronix.de>"); +MODULE_DESCRIPTION("printk_ringbuffer test"); +MODULE_LICENSE("GPL"); base-commit: 4022ef25504db2fb79a2acac0afe9bac934f8dd6 -- 2.39.5

1 year, 1 month

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[PATCHv2 net 0/2] ipv6: fix temporary address not removed correctly

by Hangbin Liu

Currently the temporary address is not removed when mngtmpaddr is deleted or becomes unmanaged. The patch set fixed this issue and add a related test. v2: 1) delete the tempaddrs directly instead of remove them in addrconf_verify_rtnl(Sam Edwards) 2) Update the test case by checking the address including, add Sam in SOB (Sam Edwards) Hangbin Liu (2): net/ipv6: delete temporary address if mngtmpaddr is removed or unmanaged selftests/rtnetlink.sh: add mngtempaddr test net/ipv6/addrconf.c | 41 +++++++--- tools/testing/selftests/net/rtnetlink.sh | 95 ++++++++++++++++++++++++ 2 files changed, 124 insertions(+), 12 deletions(-) -- 2.46.0

1 year, 1 month

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[PATCH v2] selftests: Warn about skipped tests in result summary

by Laura Nao

Update the functions that print the test totals at the end of a selftest to include a warning message when skipped tests are detected. The message advises users that skipped tests may indicate missing configuration options and suggests enabling them to improve coverage. Signed-off-by: Laura Nao <laura.nao(a)collabora.com> --- Changes in v2: - Included count of skipped tests in the warning message --- tools/testing/selftests/kselftest.h | 5 +++++ tools/testing/selftests/kselftest/ksft.py | 3 +++ tools/testing/selftests/kselftest/ktap_helpers.sh | 4 ++++ 3 files changed, 12 insertions(+) diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h index 29fedf609611..249201664bcb 100644 --- a/tools/testing/selftests/kselftest.h +++ b/tools/testing/selftests/kselftest.h @@ -147,6 +147,11 @@ static inline void ksft_set_plan(unsigned int plan) static inline void ksft_print_cnts(void) { + if (ksft_cnt.ksft_xskip > 0) + printf( + "# %u skipped test(s) detected. Consider enabling relevant config options to improve coverage.\n", + ksft_cnt.ksft_xskip + ); if (ksft_plan != ksft_test_num()) printf("# Planned tests != run tests (%u != %u)\n", ksft_plan, ksft_test_num()); diff --git a/tools/testing/selftests/kselftest/ksft.py b/tools/testing/selftests/kselftest/ksft.py index bf215790a89d..0e030837fc17 100644 --- a/tools/testing/selftests/kselftest/ksft.py +++ b/tools/testing/selftests/kselftest/ksft.py @@ -27,6 +27,9 @@ def set_plan(num_tests): def print_cnts(): + if ksft_cnt['skip'] > 0: + print(f"# {ksft_cnt['skip']} skipped test(s) detected. Consider enabling relevant config options to improve coverage.") + print( f"# Totals: pass:{ksft_cnt['pass']} fail:{ksft_cnt['fail']} xfail:0 xpass:0 skip:{ksft_cnt['skip']} error:0" ) diff --git a/tools/testing/selftests/kselftest/ktap_helpers.sh b/tools/testing/selftests/kselftest/ktap_helpers.sh index 79a125eb24c2..531094d81f03 100644 --- a/tools/testing/selftests/kselftest/ktap_helpers.sh +++ b/tools/testing/selftests/kselftest/ktap_helpers.sh @@ -107,5 +107,9 @@ ktap_finished() { } ktap_print_totals() { + if [ "$KTAP_CNT_SKIP" -gt 0 ]; then + echo "# $KTAP_CNT_SKIP skipped test(s) detected. " \ + "Consider enabling relevant config options to improve coverage." + fi echo "# Totals: pass:$KTAP_CNT_PASS fail:$KTAP_CNT_FAIL xfail:0 xpass:0 skip:$KTAP_CNT_SKIP error:0" } -- 2.30.2

1 year, 1 month

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[PATCH v1] selftests/bpf: Fix unnecessary conversion to bool in 'run_subtest'

by guanjing

Fixes the following coccicheck: tools/testing/selftests/bpf/test_loader.c:1033:64-69: WARNING: conversion to bool not needed here Fixes: 80a4129fcf20 ("selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages") Signed-off-by: guanjing <guanjing(a)cmss.chinamobile.com> --- tools/testing/selftests/bpf/test_loader.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/test_loader.c b/tools/testing/selftests/bpf/test_loader.c index 3e9b009580d4..400f56f81272 100644 --- a/tools/testing/selftests/bpf/test_loader.c +++ b/tools/testing/selftests/bpf/test_loader.c @@ -1030,7 +1030,7 @@ void run_subtest(struct test_loader *tester, } do_prog_test_run(bpf_program__fd(tprog), &retval, - bpf_program__type(tprog) == BPF_PROG_TYPE_SYSCALL ? true : false); + bpf_program__type(tprog) == BPF_PROG_TYPE_SYSCALL); if (retval != subspec->retval && subspec->retval != POINTER_VALUE) { PRINT_FAIL("Unexpected retval: %d != %d\n", retval, subspec->retval); goto tobj_cleanup; -- 2.33.0

1 year, 1 month

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[PATCH bpf 0/4] bpf, vsock: Fix poll() and close()

by Michal Luczaj

Two small fixes for vsock: poll() missing a queue check, and close() not invoking sockmap cleanup. Signed-off-by: Michal Luczaj <mhal(a)rbox.co> --- Michal Luczaj (4): bpf, vsock: Fix poll() missing a queue selftest/bpf: Add test for af_vsock poll() bpf, vsock: Invoke proto::close on close() selftest/bpf: Add test for vsock removal from sockmap on close() net/vmw_vsock/af_vsock.c | 70 ++++++++++++-------- .../selftests/bpf/prog_tests/sockmap_basic.c | 77 ++++++++++++++++++++++ 2 files changed, 120 insertions(+), 27 deletions(-) --- base-commit: 6c4139b0f19b7397286897caee379f8321e78272 change-id: 20241118-vsock-bpf-poll-close-64f432e682ec Best regards, -- Michal Luczaj <mhal(a)rbox.co>

1 year, 1 month

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[PATCH for-next v3] selftests/mm: Add a few missing gitignore files

by Li Zhijian

Compiled binary files should be added to .gitignore 'git status' complains: Untracked files: (use "git add <file>..." to include in what will be committed) mm/hugetlb_dio mm/pkey_sighandler_tests_32 mm/pkey_sighandler_tests_64 Cc: Donet Tom <donettom(a)linux.ibm.com> Cc: Andrew Morton <akpm(a)linux-foundation.org> Cc: Shuah Khan <shuah(a)kernel.org> Signed-off-by: Li Zhijian <lizhijian(a)fujitsu.com> --- Cc: linux-mm(a)kvack.org --- Hello, Cover letter is here. This patch set aims to make 'git status' clear after 'make' and 'make run_tests' for kselftests. --- V3: nothing change, just resend it (This .gitignore have not sorted, so I appended new files to the end) V2: split as seperate patch from a small one [0] [0] https://lore.kernel.org/linux-kselftest/20241015010817.453539-1-lizhijian@f… --- tools/testing/selftests/mm/.gitignore | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/mm/.gitignore b/tools/testing/selftests/mm/.gitignore index da030b43e43b..2ac11b7fcb26 100644 --- a/tools/testing/selftests/mm/.gitignore +++ b/tools/testing/selftests/mm/.gitignore @@ -51,3 +51,5 @@ hugetlb_madv_vs_map mseal_test seal_elf droppable +hugetlb_dio +pkey_sighandler_tests* -- 2.44.0

1 year, 1 month

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Comunicado. Valide seu telemovel para continuar a utilizar. Montepio em 25/11 16:8

by Net24 Empresas

1 year, 1 month

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[PATCH kselftest] fix single bpf test

by Jiayuan Chen

Currently, when testing a certain target in selftests, executing the command 'make TARGETS=XX -C tools/testing/selftests' succeeds for non-BPF, but a similar command fails for BPF: ''' make TARGETS=bpf -C tools/testing/selftests make: Entering directory '/linux-kselftest/tools/testing/selftests' make: *** [Makefile:197: all] Error 1 make: Leaving directory '/linux-kselftest/tools/testing/selftests' ''' The reason is that the previous commit: commit 7a6eb7c34a78 ("selftests: Skip BPF seftests by default") led to the default filtering of bpf in TARGETS which make TARGETS empty. That commit also mentioned that building BPF tests requires external commands to run. This caused target like 'bpf' or 'sched_ext' defined in SKIP_TARGETS to need an additional specification of SKIP_TARGETS as empty to avoid skipping it, for example: ''' make TARGETS=bpf SKIP_TARGETS="" -C tools/testing/selftests ''' If special steps are required to execute certain test, it is extremely unfair. We need a fairer way to treat different test targets. This commit provider a way: If a user has specified a single TARGETS, it indicates an expectation to run the specified target, and thus the object should not be skipped. Another way is to change TARGETS to DEFAULT_TARGETS in the Makefile and then check if the user specified TARGETS and decide whether filter or not, though this approach requires too many modifications. Signed-off-by: Jiayuan Chen <mrpre(a)163.com> --- tools/testing/selftests/Makefile | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 363d031a16f7..d76c1781ec09 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -116,7 +116,7 @@ TARGETS += vDSO TARGETS += mm TARGETS += x86 TARGETS += zram -#Please keep the TARGETS list alphabetically sorted +# Please keep the TARGETS list alphabetically sorted # Run "make quicktest=1 run_tests" or # "make quicktest=1 kselftest" from top level Makefile @@ -132,12 +132,15 @@ endif # User can optionally provide a TARGETS skiplist. By default we skip # targets using BPF since it has cutting edge build time dependencies -# which require more effort to install. +# If user provide custom TARGETS, we just ignore SKIP_TARGETS so that +# user can easy to test single target which defined in SKIP_TARGETS SKIP_TARGETS ?= bpf sched_ext ifneq ($(SKIP_TARGETS),) +ifneq ($(words $(TARGETS)), 1) TMP := $(filter-out $(SKIP_TARGETS), $(TARGETS)) override TARGETS := $(TMP) endif +endif # User can set FORCE_TARGETS to 1 to require all targets to be successfully # built; make will fail if any of the targets cannot be built. If base-commit: 67b6d342fb6d5abfbeb71e0f23141b9b96cf7bb1 -- 2.43.5

1 year, 1 month

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[PATCH] selftests: Warn about skipped tests in result summary

by Laura Nao

Update the functions that print the test totals at the end of a selftest to include a warning message when skipped tests are detected. The message advises users that skipped tests may indicate missing configuration options and suggests enabling them to improve coverage. Signed-off-by: Laura Nao <laura.nao(a)collabora.com> --- This patch follows up on a previous discussion[1] and aims to highlight skipped tests for the user's attention. [1] https://lore.kernel.org/lkml/2bb2d338-cd00-4ac2-b8bd-5579eae82637@linuxfoun… --- tools/testing/selftests/kselftest.h | 4 ++++ tools/testing/selftests/kselftest/ksft.py | 3 +++ tools/testing/selftests/kselftest/ktap_helpers.sh | 4 ++++ 3 files changed, 11 insertions(+) diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h index 29fedf609611..d3f64b333acd 100644 --- a/tools/testing/selftests/kselftest.h +++ b/tools/testing/selftests/kselftest.h @@ -147,6 +147,10 @@ static inline void ksft_set_plan(unsigned int plan) static inline void ksft_print_cnts(void) { + if (ksft_cnt.ksft_xskip > 0) + printf( + "# Skipped tests detected. Consider enabling relevant config options to improve coverage.\n" + ); if (ksft_plan != ksft_test_num()) printf("# Planned tests != run tests (%u != %u)\n", ksft_plan, ksft_test_num()); diff --git a/tools/testing/selftests/kselftest/ksft.py b/tools/testing/selftests/kselftest/ksft.py index bf215790a89d..7675a15a1264 100644 --- a/tools/testing/selftests/kselftest/ksft.py +++ b/tools/testing/selftests/kselftest/ksft.py @@ -27,6 +27,9 @@ def set_plan(num_tests): def print_cnts(): + if ksft_cnt['skip'] > 0: + print("# Skipped tests detected. Consider enabling relevant config options to improve coverage.") + print( f"# Totals: pass:{ksft_cnt['pass']} fail:{ksft_cnt['fail']} xfail:0 xpass:0 skip:{ksft_cnt['skip']} error:0" ) diff --git a/tools/testing/selftests/kselftest/ktap_helpers.sh b/tools/testing/selftests/kselftest/ktap_helpers.sh index 79a125eb24c2..a4211221ccd6 100644 --- a/tools/testing/selftests/kselftest/ktap_helpers.sh +++ b/tools/testing/selftests/kselftest/ktap_helpers.sh @@ -107,5 +107,9 @@ ktap_finished() { } ktap_print_totals() { + if [ "$KTAP_CNT_SKIP" -gt 0 ]; then + echo "# Skipped tests detected. " \ + "Consider enabling relevant config options to improve coverage." + fi echo "# Totals: pass:$KTAP_CNT_PASS fail:$KTAP_CNT_FAIL xfail:0 xpass:0 skip:$KTAP_CNT_SKIP error:0" } -- 2.30.2

1 year, 1 month

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[PATCH AUTOSEL 6.6 14/16] selftests/resctrl: Protect against array overflow when reading strings

by Sasha Levin

From: Reinette Chatre <reinette.chatre(a)intel.com> [ Upstream commit 46058430fc5d39c114f7e1b9c6ff14c9f41bd531 ] resctrl selftests discover system properties via a variety of sysfs files. The MBM and MBA tests need to discover the event and umask with which to configure the performance event used to measure read memory bandwidth. This is done by parsing the contents of /sys/bus/event_source/devices/uncore_imc_<imc instance>/events/cas_count_read Similarly, the resctrl selftests discover the cache size via /sys/bus/cpu/devices/cpu<id>/cache/index<index>/size. Take care to do bounds checking when using fscanf() to read the contents of files into a string buffer because by default fscanf() assumes arbitrarily long strings. If the file contains more bytes than the array can accommodate then an overflow will occur. Provide a maximum field width to the conversion specifier to protect against array overflow. The maximum is one less than the array size because string input stores a terminating null byte that is not covered by the maximum field width. Signed-off-by: Reinette Chatre <reinette.chatre(a)intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen(a)linux.intel.com> Signed-off-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/resctrl/resctrl_val.c | 4 ++-- tools/testing/selftests/resctrl/resctrlfs.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 45439e726e79c..438dd86f2704c 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -179,7 +179,7 @@ static int read_from_imc_dir(char *imc_dir, int count) return -1; } - if (fscanf(fp, "%s", cas_count_cfg) <= 0) { + if (fscanf(fp, "%1023s", cas_count_cfg) <= 0) { ksft_perror("Could not get iMC cas count read"); fclose(fp); @@ -197,7 +197,7 @@ static int read_from_imc_dir(char *imc_dir, int count) return -1; } - if (fscanf(fp, "%s", cas_count_cfg) <= 0) { + if (fscanf(fp, "%1023s", cas_count_cfg) <= 0) { ksft_perror("Could not get iMC cas count write"); fclose(fp); diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index 71ad2b335b83f..fe3241799841b 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -160,7 +160,7 @@ int get_cache_size(int cpu_no, char *cache_type, unsigned long *cache_size) return -1; } - if (fscanf(fp, "%s", cache_str) <= 0) { + if (fscanf(fp, "%63s", cache_str) <= 0) { ksft_perror("Could not get cache_size"); fclose(fp); -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 6.11 18/20] selftests/resctrl: Protect against array overflow when reading strings

by Sasha Levin

From: Reinette Chatre <reinette.chatre(a)intel.com> [ Upstream commit 46058430fc5d39c114f7e1b9c6ff14c9f41bd531 ] resctrl selftests discover system properties via a variety of sysfs files. The MBM and MBA tests need to discover the event and umask with which to configure the performance event used to measure read memory bandwidth. This is done by parsing the contents of /sys/bus/event_source/devices/uncore_imc_<imc instance>/events/cas_count_read Similarly, the resctrl selftests discover the cache size via /sys/bus/cpu/devices/cpu<id>/cache/index<index>/size. Take care to do bounds checking when using fscanf() to read the contents of files into a string buffer because by default fscanf() assumes arbitrarily long strings. If the file contains more bytes than the array can accommodate then an overflow will occur. Provide a maximum field width to the conversion specifier to protect against array overflow. The maximum is one less than the array size because string input stores a terminating null byte that is not covered by the maximum field width. Signed-off-by: Reinette Chatre <reinette.chatre(a)intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen(a)linux.intel.com> Signed-off-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/resctrl/resctrl_val.c | 4 ++-- tools/testing/selftests/resctrl/resctrlfs.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 8c275f6b4dd77..1bba85e4c0675 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -160,7 +160,7 @@ static int read_from_imc_dir(char *imc_dir, int count) return -1; } - if (fscanf(fp, "%s", cas_count_cfg) <= 0) { + if (fscanf(fp, "%1023s", cas_count_cfg) <= 0) { ksft_perror("Could not get iMC cas count read"); fclose(fp); @@ -178,7 +178,7 @@ static int read_from_imc_dir(char *imc_dir, int count) return -1; } - if (fscanf(fp, "%s", cas_count_cfg) <= 0) { + if (fscanf(fp, "%1023s", cas_count_cfg) <= 0) { ksft_perror("Could not get iMC cas count write"); fclose(fp); diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index 250c320349a78..a53cd1cb6e0c6 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -182,7 +182,7 @@ int get_cache_size(int cpu_no, const char *cache_type, unsigned long *cache_size return -1; } - if (fscanf(fp, "%s", cache_str) <= 0) { + if (fscanf(fp, "%63s", cache_str) <= 0) { ksft_perror("Could not get cache_size"); fclose(fp); -- 2.43.0

1 year, 1 month

1
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[PATCH AUTOSEL 6.12 20/23] selftests/resctrl: Protect against array overflow when reading strings

by Sasha Levin

From: Reinette Chatre <reinette.chatre(a)intel.com> [ Upstream commit 46058430fc5d39c114f7e1b9c6ff14c9f41bd531 ] resctrl selftests discover system properties via a variety of sysfs files. The MBM and MBA tests need to discover the event and umask with which to configure the performance event used to measure read memory bandwidth. This is done by parsing the contents of /sys/bus/event_source/devices/uncore_imc_<imc instance>/events/cas_count_read Similarly, the resctrl selftests discover the cache size via /sys/bus/cpu/devices/cpu<id>/cache/index<index>/size. Take care to do bounds checking when using fscanf() to read the contents of files into a string buffer because by default fscanf() assumes arbitrarily long strings. If the file contains more bytes than the array can accommodate then an overflow will occur. Provide a maximum field width to the conversion specifier to protect against array overflow. The maximum is one less than the array size because string input stores a terminating null byte that is not covered by the maximum field width. Signed-off-by: Reinette Chatre <reinette.chatre(a)intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen(a)linux.intel.com> Signed-off-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/resctrl/resctrl_val.c | 4 ++-- tools/testing/selftests/resctrl/resctrlfs.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 8c275f6b4dd77..1bba85e4c0675 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -160,7 +160,7 @@ static int read_from_imc_dir(char *imc_dir, int count) return -1; } - if (fscanf(fp, "%s", cas_count_cfg) <= 0) { + if (fscanf(fp, "%1023s", cas_count_cfg) <= 0) { ksft_perror("Could not get iMC cas count read"); fclose(fp); @@ -178,7 +178,7 @@ static int read_from_imc_dir(char *imc_dir, int count) return -1; } - if (fscanf(fp, "%s", cas_count_cfg) <= 0) { + if (fscanf(fp, "%1023s", cas_count_cfg) <= 0) { ksft_perror("Could not get iMC cas count write"); fclose(fp); diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c index 250c320349a78..a53cd1cb6e0c6 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -182,7 +182,7 @@ int get_cache_size(int cpu_no, const char *cache_type, unsigned long *cache_size return -1; } - if (fscanf(fp, "%s", cache_str) <= 0) { + if (fscanf(fp, "%63s", cache_str) <= 0) { ksft_perror("Could not get cache_size"); fclose(fp); -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 5.10 5/5] kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 27141b690547da5650a420f26ec369ba142a9ebb ] The PAC exec_sign_all() test spawns some child processes, creating pipes to be stdin and stdout for the child. It cleans up most of the file descriptors that are created as part of this but neglects to clean up the parent end of the child stdin and stdout. Add the missing close() calls. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241111-arm64-pac-test-collisions-v1-1-171875f37… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/pauth/pac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/testing/selftests/arm64/pauth/pac.c b/tools/testing/selftests/arm64/pauth/pac.c index b743daa772f55..5a07b3958fbf2 100644 --- a/tools/testing/selftests/arm64/pauth/pac.c +++ b/tools/testing/selftests/arm64/pauth/pac.c @@ -182,6 +182,9 @@ int exec_sign_all(struct signatures *signed_vals, size_t val) return -1; } + close(new_stdin[1]); + close(new_stdout[0]); + return 0; } -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 5.15 6/6] kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 27141b690547da5650a420f26ec369ba142a9ebb ] The PAC exec_sign_all() test spawns some child processes, creating pipes to be stdin and stdout for the child. It cleans up most of the file descriptors that are created as part of this but neglects to clean up the parent end of the child stdin and stdout. Add the missing close() calls. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241111-arm64-pac-test-collisions-v1-1-171875f37… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/pauth/pac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/testing/selftests/arm64/pauth/pac.c b/tools/testing/selftests/arm64/pauth/pac.c index b743daa772f55..5a07b3958fbf2 100644 --- a/tools/testing/selftests/arm64/pauth/pac.c +++ b/tools/testing/selftests/arm64/pauth/pac.c @@ -182,6 +182,9 @@ int exec_sign_all(struct signatures *signed_vals, size_t val) return -1; } + close(new_stdin[1]); + close(new_stdout[0]); + return 0; } -- 2.43.0

1 year, 1 month

1
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[PATCH AUTOSEL 5.15 5/6] kselftest/arm64: Corrupt P0 in the irritator when testing SSVE

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 3e360ef0c0a1fb6ce9a302e40b8057c41ba8a9d2 ] When building for streaming SVE the irritator for SVE skips updates of both P0 and FFR. While FFR is skipped since it might not be present there is no reason to skip corrupting P0 so switch to an instruction valid in streaming mode and move the ifdef. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-3-c4b9622e3… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/fp/sve-test.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index e3e08d9c7020e..f631d17c899d2 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -459,7 +459,8 @@ function irritator_handler movi v9.16b, #2 movi v31.8b, #3 // And P0 - rdffr p0.b + ptrue p0.d +#ifndef SSVE // And FFR wrffr p15.b -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 6.1 7/7] kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 27141b690547da5650a420f26ec369ba142a9ebb ] The PAC exec_sign_all() test spawns some child processes, creating pipes to be stdin and stdout for the child. It cleans up most of the file descriptors that are created as part of this but neglects to clean up the parent end of the child stdin and stdout. Add the missing close() calls. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241111-arm64-pac-test-collisions-v1-1-171875f37… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/pauth/pac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/testing/selftests/arm64/pauth/pac.c b/tools/testing/selftests/arm64/pauth/pac.c index b743daa772f55..5a07b3958fbf2 100644 --- a/tools/testing/selftests/arm64/pauth/pac.c +++ b/tools/testing/selftests/arm64/pauth/pac.c @@ -182,6 +182,9 @@ int exec_sign_all(struct signatures *signed_vals, size_t val) return -1; } + close(new_stdin[1]); + close(new_stdout[0]); + return 0; } -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 6.1 6/7] kselftest/arm64: Corrupt P0 in the irritator when testing SSVE

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 3e360ef0c0a1fb6ce9a302e40b8057c41ba8a9d2 ] When building for streaming SVE the irritator for SVE skips updates of both P0 and FFR. While FFR is skipped since it might not be present there is no reason to skip corrupting P0 so switch to an instruction valid in streaming mode and move the ifdef. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-3-c4b9622e3… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/fp/sve-test.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index 2a18cb4c528c5..b9648daeabbb1 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -304,9 +304,9 @@ function irritator_handler movi v0.8b, #1 movi v9.16b, #2 movi v31.8b, #3 -#ifndef SSVE // And P0 - rdffr p0.b + ptrue p0.d +#ifndef SSVE // And FFR wrffr p15.b #endif -- 2.43.0

1 year, 1 month

1
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[PATCH AUTOSEL 6.6 9/9] kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 27141b690547da5650a420f26ec369ba142a9ebb ] The PAC exec_sign_all() test spawns some child processes, creating pipes to be stdin and stdout for the child. It cleans up most of the file descriptors that are created as part of this but neglects to clean up the parent end of the child stdin and stdout. Add the missing close() calls. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241111-arm64-pac-test-collisions-v1-1-171875f37… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/pauth/pac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/testing/selftests/arm64/pauth/pac.c b/tools/testing/selftests/arm64/pauth/pac.c index b743daa772f55..5a07b3958fbf2 100644 --- a/tools/testing/selftests/arm64/pauth/pac.c +++ b/tools/testing/selftests/arm64/pauth/pac.c @@ -182,6 +182,9 @@ int exec_sign_all(struct signatures *signed_vals, size_t val) return -1; } + close(new_stdin[1]); + close(new_stdout[0]); + return 0; } -- 2.43.0

1 year, 1 month

1
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[PATCH AUTOSEL 6.6 8/9] kselftest/arm64: Corrupt P0 in the irritator when testing SSVE

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 3e360ef0c0a1fb6ce9a302e40b8057c41ba8a9d2 ] When building for streaming SVE the irritator for SVE skips updates of both P0 and FFR. While FFR is skipped since it might not be present there is no reason to skip corrupting P0 so switch to an instruction valid in streaming mode and move the ifdef. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-3-c4b9622e3… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/fp/sve-test.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index 4328895dfc876..ff60360a97f80 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -304,9 +304,9 @@ function irritator_handler movi v0.8b, #1 movi v9.16b, #2 movi v31.8b, #3 -#ifndef SSVE // And P0 - rdffr p0.b + ptrue p0.d +#ifndef SSVE // And FFR wrffr p15.b #endif -- 2.43.0

1 year, 1 month

1
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[PATCH AUTOSEL 6.6 2/9] kselftest/arm64: Log fp-stress child startup errors to stdout

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit dca93d29845dfed60910ba13dbfb6ae6a0e19f6d ] Currently if we encounter an error between fork() and exec() of a child process we log the error to stderr. This means that the errors don't get annotated with the child information which makes diagnostics harder and means that if we miss the exit signal from the child we can deadlock waiting for output from the child. Improve robustness and output quality by logging to stdout instead. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241023-arm64-fp-stress-exec-fail-v1-1-ee3c62932… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/fp/fp-stress.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/arm64/fp/fp-stress.c b/tools/testing/selftests/arm64/fp/fp-stress.c index dd31647b00a22..cf9d7b2e4630c 100644 --- a/tools/testing/selftests/arm64/fp/fp-stress.c +++ b/tools/testing/selftests/arm64/fp/fp-stress.c @@ -79,7 +79,7 @@ static void child_start(struct child_data *child, const char *program) */ ret = dup2(pipefd[1], 1); if (ret == -1) { - fprintf(stderr, "dup2() %d\n", errno); + printf("dup2() %d\n", errno); exit(EXIT_FAILURE); } @@ -89,7 +89,7 @@ static void child_start(struct child_data *child, const char *program) */ ret = dup2(startup_pipe[0], 3); if (ret == -1) { - fprintf(stderr, "dup2() %d\n", errno); + printf("dup2() %d\n", errno); exit(EXIT_FAILURE); } @@ -107,16 +107,15 @@ static void child_start(struct child_data *child, const char *program) */ ret = read(3, &i, sizeof(i)); if (ret < 0) - fprintf(stderr, "read(startp pipe) failed: %s (%d)\n", - strerror(errno), errno); + printf("read(startp pipe) failed: %s (%d)\n", + strerror(errno), errno); if (ret > 0) - fprintf(stderr, "%d bytes of data on startup pipe\n", - ret); + printf("%d bytes of data on startup pipe\n", ret); close(3); ret = execl(program, program, NULL); - fprintf(stderr, "execl(%s) failed: %d (%s)\n", - program, errno, strerror(errno)); + printf("execl(%s) failed: %d (%s)\n", + program, errno, strerror(errno)); exit(EXIT_FAILURE); } else { -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 6.11 15/16] kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 27141b690547da5650a420f26ec369ba142a9ebb ] The PAC exec_sign_all() test spawns some child processes, creating pipes to be stdin and stdout for the child. It cleans up most of the file descriptors that are created as part of this but neglects to clean up the parent end of the child stdin and stdout. Add the missing close() calls. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241111-arm64-pac-test-collisions-v1-1-171875f37… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/pauth/pac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/testing/selftests/arm64/pauth/pac.c b/tools/testing/selftests/arm64/pauth/pac.c index b743daa772f55..5a07b3958fbf2 100644 --- a/tools/testing/selftests/arm64/pauth/pac.c +++ b/tools/testing/selftests/arm64/pauth/pac.c @@ -182,6 +182,9 @@ int exec_sign_all(struct signatures *signed_vals, size_t val) return -1; } + close(new_stdin[1]); + close(new_stdout[0]); + return 0; } -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 6.11 14/16] kselftest/arm64: Corrupt P0 in the irritator when testing SSVE

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 3e360ef0c0a1fb6ce9a302e40b8057c41ba8a9d2 ] When building for streaming SVE the irritator for SVE skips updates of both P0 and FFR. While FFR is skipped since it might not be present there is no reason to skip corrupting P0 so switch to an instruction valid in streaming mode and move the ifdef. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-3-c4b9622e3… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/fp/sve-test.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index fff60e2a25add..4fcb492aee1fb 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -304,9 +304,9 @@ function irritator_handler movi v0.8b, #1 movi v9.16b, #2 movi v31.8b, #3 -#ifndef SSVE // And P0 - rdffr p0.b + ptrue p0.d +#ifndef SSVE // And FFR wrffr p15.b #endif -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 6.11 05/16] kselftest/arm64: Log fp-stress child startup errors to stdout

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit dca93d29845dfed60910ba13dbfb6ae6a0e19f6d ] Currently if we encounter an error between fork() and exec() of a child process we log the error to stderr. This means that the errors don't get annotated with the child information which makes diagnostics harder and means that if we miss the exit signal from the child we can deadlock waiting for output from the child. Improve robustness and output quality by logging to stdout instead. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241023-arm64-fp-stress-exec-fail-v1-1-ee3c62932… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/fp/fp-stress.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/arm64/fp/fp-stress.c b/tools/testing/selftests/arm64/fp/fp-stress.c index faac24bdefeb9..80f22789504d6 100644 --- a/tools/testing/selftests/arm64/fp/fp-stress.c +++ b/tools/testing/selftests/arm64/fp/fp-stress.c @@ -79,7 +79,7 @@ static void child_start(struct child_data *child, const char *program) */ ret = dup2(pipefd[1], 1); if (ret == -1) { - fprintf(stderr, "dup2() %d\n", errno); + printf("dup2() %d\n", errno); exit(EXIT_FAILURE); } @@ -89,7 +89,7 @@ static void child_start(struct child_data *child, const char *program) */ ret = dup2(startup_pipe[0], 3); if (ret == -1) { - fprintf(stderr, "dup2() %d\n", errno); + printf("dup2() %d\n", errno); exit(EXIT_FAILURE); } @@ -107,16 +107,15 @@ static void child_start(struct child_data *child, const char *program) */ ret = read(3, &i, sizeof(i)); if (ret < 0) - fprintf(stderr, "read(startp pipe) failed: %s (%d)\n", - strerror(errno), errno); + printf("read(startp pipe) failed: %s (%d)\n", + strerror(errno), errno); if (ret > 0) - fprintf(stderr, "%d bytes of data on startup pipe\n", - ret); + printf("%d bytes of data on startup pipe\n", ret); close(3); ret = execl(program, program, NULL); - fprintf(stderr, "execl(%s) failed: %d (%s)\n", - program, errno, strerror(errno)); + printf("execl(%s) failed: %d (%s)\n", + program, errno, strerror(errno)); exit(EXIT_FAILURE); } else { -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 6.12 18/19] kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 27141b690547da5650a420f26ec369ba142a9ebb ] The PAC exec_sign_all() test spawns some child processes, creating pipes to be stdin and stdout for the child. It cleans up most of the file descriptors that are created as part of this but neglects to clean up the parent end of the child stdin and stdout. Add the missing close() calls. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241111-arm64-pac-test-collisions-v1-1-171875f37… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/pauth/pac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/testing/selftests/arm64/pauth/pac.c b/tools/testing/selftests/arm64/pauth/pac.c index b743daa772f55..5a07b3958fbf2 100644 --- a/tools/testing/selftests/arm64/pauth/pac.c +++ b/tools/testing/selftests/arm64/pauth/pac.c @@ -182,6 +182,9 @@ int exec_sign_all(struct signatures *signed_vals, size_t val) return -1; } + close(new_stdin[1]); + close(new_stdout[0]); + return 0; } -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 6.12 17/19] kselftest/arm64: Corrupt P0 in the irritator when testing SSVE

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit 3e360ef0c0a1fb6ce9a302e40b8057c41ba8a9d2 ] When building for streaming SVE the irritator for SVE skips updates of both P0 and FFR. While FFR is skipped since it might not be present there is no reason to skip corrupting P0 so switch to an instruction valid in streaming mode and move the ifdef. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241107-arm64-fp-stress-irritator-v2-3-c4b9622e3… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/fp/sve-test.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index fff60e2a25add..4fcb492aee1fb 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -304,9 +304,9 @@ function irritator_handler movi v0.8b, #1 movi v9.16b, #2 movi v31.8b, #3 -#ifndef SSVE // And P0 - rdffr p0.b + ptrue p0.d +#ifndef SSVE // And FFR wrffr p15.b #endif -- 2.43.0

1 year, 1 month

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[PATCH AUTOSEL 6.12 05/19] kselftest/arm64: Log fp-stress child startup errors to stdout

by Sasha Levin

From: Mark Brown <broonie(a)kernel.org> [ Upstream commit dca93d29845dfed60910ba13dbfb6ae6a0e19f6d ] Currently if we encounter an error between fork() and exec() of a child process we log the error to stderr. This means that the errors don't get annotated with the child information which makes diagnostics harder and means that if we miss the exit signal from the child we can deadlock waiting for output from the child. Improve robustness and output quality by logging to stdout instead. Signed-off-by: Mark Brown <broonie(a)kernel.org> Link: https://lore.kernel.org/r/20241023-arm64-fp-stress-exec-fail-v1-1-ee3c62932… Signed-off-by: Catalin Marinas <catalin.marinas(a)arm.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/arm64/fp/fp-stress.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/arm64/fp/fp-stress.c b/tools/testing/selftests/arm64/fp/fp-stress.c index faac24bdefeb9..80f22789504d6 100644 --- a/tools/testing/selftests/arm64/fp/fp-stress.c +++ b/tools/testing/selftests/arm64/fp/fp-stress.c @@ -79,7 +79,7 @@ static void child_start(struct child_data *child, const char *program) */ ret = dup2(pipefd[1], 1); if (ret == -1) { - fprintf(stderr, "dup2() %d\n", errno); + printf("dup2() %d\n", errno); exit(EXIT_FAILURE); } @@ -89,7 +89,7 @@ static void child_start(struct child_data *child, const char *program) */ ret = dup2(startup_pipe[0], 3); if (ret == -1) { - fprintf(stderr, "dup2() %d\n", errno); + printf("dup2() %d\n", errno); exit(EXIT_FAILURE); } @@ -107,16 +107,15 @@ static void child_start(struct child_data *child, const char *program) */ ret = read(3, &i, sizeof(i)); if (ret < 0) - fprintf(stderr, "read(startp pipe) failed: %s (%d)\n", - strerror(errno), errno); + printf("read(startp pipe) failed: %s (%d)\n", + strerror(errno), errno); if (ret > 0) - fprintf(stderr, "%d bytes of data on startup pipe\n", - ret); + printf("%d bytes of data on startup pipe\n", ret); close(3); ret = execl(program, program, NULL); - fprintf(stderr, "execl(%s) failed: %d (%s)\n", - program, errno, strerror(errno)); + printf("execl(%s) failed: %d (%s)\n", + program, errno, strerror(errno)); exit(EXIT_FAILURE); } else { -- 2.43.0

1 year, 1 month

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[PATCH for-next v3] selftests/alsa: Add a few missing gitignore files

by Li Zhijian

Compiled binary files should be added to .gitignore 'git status' complains: Untracked files: (use "git add <file>..." to include in what will be committed) alsa/global-timer alsa/utimer-test Cc: Mark Brown <broonie(a)kernel.org> Cc: Jaroslav Kysela <perex(a)perex.cz> Cc: Takashi Iwai <tiwai(a)suse.com> Cc: Shuah Khan <shuah(a)kernel.org> Signed-off-by: Li Zhijian <lizhijian(a)fujitsu.com> --- Cc: linux-sound(a)vger.kernel.org --- Hello, Cover letter is here. This patch set aims to make 'git status' clear after 'make' and 'make run_tests' for kselftests. --- V3: sorted the ignore files V2: split as a separate patch from a small one [0] [0] https://lore.kernel.org/linux-kselftest/20241015010817.453539-1-lizhijian@f… Signed-off-by: Li Zhijian <lizhijian(a)fujitsu.com> --- tools/testing/selftests/alsa/.gitignore | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/alsa/.gitignore b/tools/testing/selftests/alsa/.gitignore index 12dc3fcd3456..3dd8e1176b89 100644 --- a/tools/testing/selftests/alsa/.gitignore +++ b/tools/testing/selftests/alsa/.gitignore @@ -1,3 +1,5 @@ +global-timer mixer-test pcm-test test-pcmtest-driver +utimer-test -- 2.44.0

1 year, 1 month

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[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, 1 month

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[GIT PULL] KUnit update for Linux 6.13-rc1-fixed

by Shuah Khan

Hi Linus, Please pull the following kunit update for Linux 6.13-rc1. This pull request is fixed up with the right fix for the UAF bug and includes other fixes. linux_kselftest-kunit-6.13-rc1-fixed kunit update for Linux 6.13-rc1 -- fixes user-after-free (UAF) bug in kunit_init_suite() -- adds option to kunit tool to print just the summary of test results -- adds option to kunit tool to print just the failed test results -- fixes kunit_zalloc_skb() to use user passed in gfp value instead of hardcoding GFP_KERNEL -- fixes kunit_zalloc_skb() kernel doc to include allocation flags variable -- updates KUnit email address for Brendan Higgins -- adds LoongArch config to qemu_configs -- changes tool to allow overriding the shutdown mode from qemu config -- enables shutdown in loongarch qemu_config -- fixes potential null dereference in kunit_device_driver_test() -- fixes debugfs to use IS_ERR() for alloc_string_stream() error check diff is attached. Tests passed on my kunit repo & linux-next: - Build make allmodconfig ./tools/testing/kunit/kunit.py run ./tools/testing/kunit/kunit.py run --alltests ./tools/testing/kunit/kunit.py run --arch x86_64 ./tools/testing/kunit/kunit.py run --alltests --arch x86_64 thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 2d5404caa8c7bb5c4e0435f94b28834ae5456623: Linux 6.12-rc7 (2024-11-10 14:19:35 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-kunit-6.13-rc1-fixed for you to fetch changes up to 62adcae479fe5bc04fa3b6c3f93bd340441f8b25: kunit: qemu_configs: loongarch: Enable shutdown (2024-11-19 15:26:30 -0700) ---------------------------------------------------------------- linux_kselftest-kunit-6.13-rc1-fixed kunit update for Linux 6.13-rc1 -- fixes user-after-free (UAF) bug in kunit_init_suite() -- adds option to kunit tool to print just the summary of test results -- adds option to kunit tool to print just the failed test results -- fixes kunit_zalloc_skb() to use user passed in gfp value instead of hardcoding GFP_KERNEL -- fixes kunit_zalloc_skb() kernel doc to include allocation flags variable -- updates KUnit email address for Brendan Higgins -- adds LoongArch config to qemu_configs -- changes tool to allow overriding the shutdown mode from qemu config -- enables shutdown in loongarch qemu_config -- fixes potential null dereference in kunit_device_driver_test() -- fixes debugfs to use IS_ERR() for alloc_string_stream() error check ---------------------------------------------------------------- Brendan Higgins (1): MAINTAINERS: Update KUnit email address for Brendan Higgins Dan Carpenter (2): kunit: skb: use "gfp" variable instead of hardcoding GFP_KERNEL kunit: skb: add gfp to kernel doc for kunit_zalloc_skb() David Gow (1): kunit: tool: Only print the summary Jinjie Ruan (1): kunit: string-stream: Fix a UAF bug in kunit_init_suite() Kuan-Wei Chiu (1): kunit: debugfs: Use IS_ERR() for alloc_string_stream() error check Rae Moar (1): kunit: tool: print failed tests only Thomas Weißschuh (3): kunit: qemu_configs: Add LoongArch config kunit: tool: Allow overriding the shutdown mode from qemu config kunit: qemu_configs: loongarch: Enable shutdown Zichen Xie (1): kunit: Fix potential null dereference in kunit_device_driver_test() MAINTAINERS | 2 +- include/kunit/skbuff.h | 5 +- lib/kunit/debugfs.c | 9 +- lib/kunit/kunit-test.c | 2 + tools/testing/kunit/kunit.py | 28 +++++- tools/testing/kunit/kunit_kernel.py | 4 +- tools/testing/kunit/kunit_parser.py | 134 ++++++++++++++++---------- tools/testing/kunit/kunit_printer.py | 14 ++- tools/testing/kunit/kunit_tool_test.py | 55 +++++------ tools/testing/kunit/qemu_configs/loongarch.py | 21 ++++ 10 files changed, 183 insertions(+), 91 deletions(-) create mode 100644 tools/testing/kunit/qemu_configs/loongarch.py ----------------------------------------------------------------

1 year, 1 month

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[RFC v2] MAINTAINERS: split kselftest entry into 'framework' and 'all'

by Jakub Kicinski

The testing effort is increasing throughout the community. The tests are generally merged into the subsystem trees, and are of relatively narrow interest. The patch volume on linux-kselftest(a)vger.kernel.org makes it hard to follow the changes to the framework, and discuss proposals. Create a new ML focused on the framework of kselftests, which will hopefully be similarly low volume to the workflows@ mailing list. From the responses to v1 I gather that the preference is to keep the existing list for all (or create an alias to it); the framework-only section should be the one to have a new list created. Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- Sorry for the delay, the responses to v1 weren't super positive but I keep thinking this would be very useful :) Or at the very least I find workflows@ very useful and informative as a maintainer. Posting as an RFC because we need to create the new ML. v1: https://lore.kernel.org/20241003142328.622730-1-kuba@kernel.org CC: shuah(a)kernel.org CC: Tim.Bird(a)sony.com CC: linux-kselftest(a)vger.kernel.org CC: workflows(a)vger.kernel.org --- MAINTAINERS | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index f245573722ef..345a0657ba1d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12395,7 +12395,7 @@ S: Supported F: Documentation/admin-guide/reporting-regressions.rst F: Documentation/process/handling-regressions.rst -KERNEL SELFTEST FRAMEWORK +KERNEL SELFTEST M: Shuah Khan <shuah(a)kernel.org> M: Shuah Khan <skhan(a)linuxfoundation.org> L: linux-kselftest(a)vger.kernel.org @@ -12405,6 +12405,19 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git F: Documentation/dev-tools/kselftest* F: tools/testing/selftests/ +KERNEL SELFTEST FRAMEWORK +M: Shuah Khan <shuah(a)kernel.org> +M: Shuah Khan <skhan(a)linuxfoundation.org> +L: linux-kselftest-core(a)vger.kernel.org +S: Maintained +F: Documentation/dev-tools/kselftest* +F: tools/testing/selftests/kselftest/ +F: tools/testing/selftests/lib/ +F: tools/testing/selftests/lib.mk +F: tools/testing/selftests/Makefile +F: tools/testing/selftests/*.sh +F: tools/testing/selftests/*.h + KERNEL SMB3 SERVER (KSMBD) M: Namjae Jeon <linkinjeon(a)kernel.org> M: Steve French <sfrench(a)samba.org> -- 2.47.0

1 year, 1 month

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[PATCH net-next v3] af_unix: pass pidfd flags via SCM_PIDFD cmsg

by Stas Sergeev

Currently SCM_PIDFD cmsg cannot be sent via unix socket (returns -EINVAL) and SO_PASSPIDFD doesn't support flags. The created pidfd always has flags set to 0. This patch implements SCM_PIDFD cmsg in AF_UNIX socket, which can be used to send flags to SO_PASSPIDFD-enabled recipient. Self-test is added for the propagation of PIDFD_NONBLOCK flag. This is mainly needed for the future extensions, like eg this one: https://lore.kernel.org/lkml/8288a08e-448b-43c2-82dc-59f87d0d9072@yandex.ru… where it was suggested to try solving the supplementary groups problem with pidfd. Changes in v3: specify target tree in patch subject Changes in v2: remove flags validation in scm_pidfd_recv(), as suggested by Kuniyuki Iwashima <kuniyu(a)amazon.com> Signed-off-by: Stas Sergeev <stsp2(a)yandex.ru> CC: "David S. Miller" <davem(a)davemloft.net> CC: Eric Dumazet <edumazet(a)google.com> CC: Jakub Kicinski <kuba(a)kernel.org> CC: Paolo Abeni <pabeni(a)redhat.com> CC: Simon Horman <horms(a)kernel.org> CC: Shuah Khan <shuah(a)kernel.org> CC: Christian Brauner <brauner(a)kernel.org> CC: Jens Axboe <axboe(a)kernel.dk> CC: Willem de Bruijn <willemb(a)google.com> CC: Pavel Begunkov <asml.silence(a)gmail.com> CC: Gabriel Krisman Bertazi <krisman(a)suse.de> CC: Mina Almasry <almasrymina(a)google.com> CC: Oleg Nesterov <oleg(a)redhat.com> CC: Tycho Andersen <tandersen(a)netflix.com> CC: Al Viro <viro(a)zeniv.linux.org.uk> CC: Kuniyuki Iwashima <kuniyu(a)amazon.com> CC: Gou Hao <gouhao(a)uniontech.com> CC: Abhishek Chauhan <quic_abchauha(a)quicinc.com> CC: Michal Luczaj <mhal(a)rbox.co> CC: Kees Cook <kees(a)kernel.org> CC: Aleksa Sarai <cyphar(a)cyphar.com> CC: linux-kernel(a)vger.kernel.org CC: netdev(a)vger.kernel.org CC: linux-kselftest(a)vger.kernel.org --- include/linux/pidfs.h | 9 +++ include/linux/socket.h | 2 +- include/net/af_unix.h | 1 + include/net/scm.h | 3 +- kernel/pid.c | 6 +- net/core/scm.c | 14 ++++ net/core/sock.c | 1 + net/unix/af_unix.c | 3 + .../testing/selftests/net/af_unix/scm_pidfd.c | 70 +++++++++++++++++-- 9 files changed, 99 insertions(+), 10 deletions(-) diff --git a/include/linux/pidfs.h b/include/linux/pidfs.h index 75bdf9807802..c4c5c1a0c2ad 100644 --- a/include/linux/pidfs.h +++ b/include/linux/pidfs.h @@ -2,7 +2,16 @@ #ifndef _LINUX_PID_FS_H #define _LINUX_PID_FS_H +#include <uapi/linux/pidfd.h> + struct file *pidfs_alloc_file(struct pid *pid, unsigned int flags); void __init pidfs_init(void); +static inline int pidfd_validate_flags(unsigned int flags) +{ + if (flags & ~(PIDFD_NONBLOCK | PIDFD_THREAD)) + return -EINVAL; + return 0; +} + #endif /* _LINUX_PID_FS_H */ diff --git a/include/linux/socket.h b/include/linux/socket.h index d18cc47e89bd..ee27d391e5aa 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -178,7 +178,7 @@ static inline size_t msg_data_left(struct msghdr *msg) #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ #define SCM_SECURITY 0x03 /* rw: security label */ -#define SCM_PIDFD 0x04 /* ro: pidfd (int) */ +#define SCM_PIDFD 0x04 /* r: pidfd, w: pidfd_flags (int) */ struct ucred { __u32 pid; diff --git a/include/net/af_unix.h b/include/net/af_unix.h index 63129c79b8cb..4bc197548c2f 100644 --- a/include/net/af_unix.h +++ b/include/net/af_unix.h @@ -62,6 +62,7 @@ struct unix_skb_parms { #ifdef CONFIG_SECURITY_NETWORK u32 secid; /* Security ID */ #endif + u32 pidfd_flags; u32 consumed; } __randomize_layout; diff --git a/include/net/scm.h b/include/net/scm.h index 0d35c7c77a74..1326edcacacb 100644 --- a/include/net/scm.h +++ b/include/net/scm.h @@ -48,6 +48,7 @@ struct scm_cookie { #ifdef CONFIG_SECURITY_NETWORK u32 secid; /* Passed security ID */ #endif + u32 pidfd_flags; }; void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm); @@ -154,7 +155,7 @@ static __inline__ void scm_pidfd_recv(struct msghdr *msg, struct scm_cookie *scm if (!scm->pid) return; - pidfd = pidfd_prepare(scm->pid, 0, &pidfd_file); + pidfd = pidfd_prepare(scm->pid, scm->pidfd_flags, &pidfd_file); if (put_cmsg(msg, SOL_SOCKET, SCM_PIDFD, sizeof(int), &pidfd)) { if (pidfd_file) { diff --git a/kernel/pid.c b/kernel/pid.c index 2715afb77eab..b1100ae8ea63 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -629,10 +629,12 @@ static int pidfd_create(struct pid *pid, unsigned int flags) SYSCALL_DEFINE2(pidfd_open, pid_t, pid, unsigned int, flags) { int fd; + int err; struct pid *p; - if (flags & ~(PIDFD_NONBLOCK | PIDFD_THREAD)) - return -EINVAL; + err = pidfd_validate_flags(flags); + if (err) + return err; if (pid <= 0) return -EINVAL; diff --git a/net/core/scm.c b/net/core/scm.c index 4f6a14babe5a..3bcdecdacd7e 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -23,6 +23,7 @@ #include <linux/security.h> #include <linux/pid_namespace.h> #include <linux/pid.h> +#include <linux/pidfs.h> #include <linux/nsproxy.h> #include <linux/slab.h> #include <linux/errqueue.h> @@ -210,6 +211,19 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p) p->creds.gid = gid; break; } + case SCM_PIDFD: + { + unsigned int flags; + + if (cmsg->cmsg_len != CMSG_LEN(sizeof(flags))) + goto error; + memcpy(&flags, CMSG_DATA(cmsg), sizeof(flags)); + err = pidfd_validate_flags(flags); + if (err) + goto error; + p->pidfd_flags = flags; + break; + } default: goto error; } diff --git a/net/core/sock.c b/net/core/sock.c index 039be95c40cf..d1fce437c035 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -2930,6 +2930,7 @@ int __sock_cmsg_send(struct sock *sk, struct cmsghdr *cmsg, /* SCM_RIGHTS and SCM_CREDENTIALS are semantically in SOL_UNIX. */ case SCM_RIGHTS: case SCM_CREDENTIALS: + case SCM_PIDFD: break; default: return -EINVAL; diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 001ccc55ef0f..8b19dfec0221 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1892,6 +1892,7 @@ static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool sen UNIXCB(skb).uid = scm->creds.uid; UNIXCB(skb).gid = scm->creds.gid; UNIXCB(skb).fp = NULL; + UNIXCB(skb).pidfd_flags = scm->pidfd_flags; unix_get_secdata(scm, skb); if (scm->fp && send_fds) err = unix_attach_fds(scm, skb); @@ -2486,6 +2487,7 @@ int __unix_dgram_recvmsg(struct sock *sk, struct msghdr *msg, size_t size, memset(&scm, 0, sizeof(scm)); scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid); + scm.pidfd_flags = UNIXCB(skb).pidfd_flags; unix_set_secdata(&scm, skb); if (!(flags & MSG_PEEK)) { @@ -2873,6 +2875,7 @@ static int unix_stream_read_generic(struct unix_stream_read_state *state, test_bit(SOCK_PASSPIDFD, &sock->flags)) { /* Copy credentials */ scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid); + scm.pidfd_flags = UNIXCB(skb).pidfd_flags; unix_set_secdata(&scm, skb); check_creds = true; } diff --git a/tools/testing/selftests/net/af_unix/scm_pidfd.c b/tools/testing/selftests/net/af_unix/scm_pidfd.c index 7e534594167e..1e70ff253a1d 100644 --- a/tools/testing/selftests/net/af_unix/scm_pidfd.c +++ b/tools/testing/selftests/net/af_unix/scm_pidfd.c @@ -5,6 +5,7 @@ #include <stddef.h> #include <stdio.h> #include <stdlib.h> +#include <fcntl.h> #include <sys/socket.h> #include <linux/socket.h> #include <unistd.h> @@ -15,6 +16,11 @@ #include <sys/types.h> #include <sys/wait.h> +/* There are problems including linux/pidfd.h, so define. */ +#ifndef PIDFD_NONBLOCK +#define PIDFD_NONBLOCK O_NONBLOCK +#endif + #include "../../kselftest_harness.h" #define clean_errno() (errno == 0 ? "None" : strerror(errno)) @@ -126,7 +132,7 @@ static pid_t get_pid_from_fdinfo_file(int pidfd, const char *key, size_t keylen) return result; } -static int cmsg_check(int fd) +static int cmsg_check(int fd, unsigned int pidfd_flags) { struct msghdr msg = { 0 }; struct cmsghdr *cmsg; @@ -136,6 +142,7 @@ static int cmsg_check(int fd) char control[CMSG_SPACE(sizeof(struct ucred)) + CMSG_SPACE(sizeof(int))] = { 0 }; int *pidfd = NULL; + unsigned int flags; pid_t parent_pid; int err; @@ -197,6 +204,13 @@ static int cmsg_check(int fd) return 1; } + flags = fcntl(*pidfd, F_GETFL, 0); + flags &= ~O_ACCMODE; + if (flags != pidfd_flags) { + log_err("SCM_PIDFD flags mismatch: %x != %x", flags, pidfd_flags); + return 1; + } + /* pidfd from SCM_PIDFD should point to the parent process PID */ parent_pid = get_pid_from_fdinfo_file(*pidfd, "Pid:", sizeof("Pid:") - 1); @@ -227,30 +241,49 @@ FIXTURE_VARIANT(scm_pidfd) { int type; bool abstract; + unsigned int flags; }; FIXTURE_VARIANT_ADD(scm_pidfd, stream_pathname) { .type = SOCK_STREAM, .abstract = 0, + .flags = 0, }; FIXTURE_VARIANT_ADD(scm_pidfd, stream_abstract) { .type = SOCK_STREAM, .abstract = 1, + .flags = 0, }; FIXTURE_VARIANT_ADD(scm_pidfd, dgram_pathname) { .type = SOCK_DGRAM, .abstract = 0, + .flags = 0, }; FIXTURE_VARIANT_ADD(scm_pidfd, dgram_abstract) { .type = SOCK_DGRAM, .abstract = 1, + .flags = 0, +}; + +FIXTURE_VARIANT_ADD(scm_pidfd, stream_nonblock) +{ + .type = SOCK_STREAM, + .abstract = 0, + .flags = PIDFD_NONBLOCK, +}; + +FIXTURE_VARIANT_ADD(scm_pidfd, dgram_nonblock) +{ + .type = SOCK_DGRAM, + .abstract = 0, + .flags = PIDFD_NONBLOCK, }; FIXTURE_SETUP(scm_pidfd) @@ -335,7 +368,7 @@ static void client(FIXTURE_DATA(scm_pidfd) *self, close(self->startup_pipe[1]); - if (cmsg_check(cfd)) { + if (cmsg_check(cfd, variant->flags)) { log_err("cmsg_check failed"); child_die(); } @@ -375,6 +408,27 @@ TEST_F(scm_pidfd, test) int err; int pfd; int child_status = 0; + char iobuf; + unsigned int pidfd_flags; + struct msghdr msg = { 0 }; + struct cmsghdr *cmsg; + struct iovec io = { + .iov_base = &iobuf, + .iov_len = sizeof(iobuf) + }; + union { + char buf[CMSG_SPACE(sizeof(pidfd_flags))]; + struct cmsghdr align; + } u; + + msg.msg_iov = &io; + msg.msg_iovlen = 1; + msg.msg_control = u.buf; + msg.msg_controllen = sizeof(u.buf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_PIDFD; + cmsg->cmsg_len = CMSG_LEN(sizeof(pidfd_flags)); self->server = socket(AF_UNIX, variant->type, 0); ASSERT_NE(-1, self->server); @@ -414,12 +468,16 @@ TEST_F(scm_pidfd, test) close(self->startup_pipe[0]); if (variant->type == SOCK_DGRAM) { - err = sendto(pfd, "x", sizeof(char), 0, (struct sockaddr *)&self->client_addr->listen_addr, self->client_addr->addrlen); - ASSERT_NE(-1, err); - } else { - err = send(pfd, "x", sizeof(char), 0); + err = connect(pfd, + (struct sockaddr *)&self->client_addr->listen_addr, + self->client_addr->addrlen); ASSERT_NE(-1, err); } + iobuf = 'x'; + pidfd_flags = variant->flags; + memcpy(CMSG_DATA(cmsg), &pidfd_flags, sizeof(pidfd_flags)); + err = sendmsg(pfd, &msg, 0); + ASSERT_NE(-1, err); close(pfd); waitpid(self->client_pid, &child_status, 0); -- 2.47.0

1 year, 1 month

5
5
0 0

[PATCH v3] selftests/lam: Test get_user() LAM pointer handling

by Maciej Wieczor-Retman

Recent change in how get_user() handles pointers [1] has a specific case for LAM. It assigns a different bitmask that's later used to check whether a pointer comes from userland in get_user(). While currently commented out (until LASS [2] is merged into the kernel) it's worth making changes to the LAM selftest ahead of time. Add test case to LAM that utilizes a ioctl (FIOASYNC) syscall which uses get_user() in its implementation. Execute the syscall with differently tagged pointers to verify that valid user pointers are passing through and invalid kernel/non-canonical pointers are not. Code was tested on a Sierra Forest Xeon machine that's LAM capable. The test was ran without issues with both the LAM lines from [1] untouched and commented out. The test was also ran without issues with LAM_SUP both enabled and disabled. 4/5 level pagetables code paths were also successfully tested in Simics on a 5-level capable machine. [1] https://lore.kernel.org/all/20241024013214.129639-1-torvalds@linux-foundati… [2] https://lore.kernel.org/all/20240710160655.3402786-1-alexander.shishkin@lin… Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman(a)intel.com> --- Changelog v3: - mmap the pointer passed to get_user to high address if 5 level paging is enabled and to low address if 4 level paging is enabled. Changelog v2: - Use mmap with HIGH_ADDR to check if we're in 5 or 4 level pagetables. tools/testing/selftests/x86/lam.c | 110 ++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) diff --git a/tools/testing/selftests/x86/lam.c b/tools/testing/selftests/x86/lam.c index 0ea4f6813930..616a523c3262 100644 --- a/tools/testing/selftests/x86/lam.c +++ b/tools/testing/selftests/x86/lam.c @@ -4,6 +4,7 @@ #include <stdlib.h> #include <string.h> #include <sys/syscall.h> +#include <sys/ioctl.h> #include <time.h> #include <signal.h> #include <setjmp.h> @@ -43,7 +44,15 @@ #define FUNC_INHERITE 0x20 #define FUNC_PASID 0x40 +/* get_user() pointer test cases */ +#define GET_USER_USER 0 +#define GET_USER_KERNEL_TOP 1 +#define GET_USER_KERNEL_BOT 2 +#define GET_USER_KERNEL 3 + #define TEST_MASK 0x7f +#define L5_SIGN_EXT_MASK (0xFFUL << 56) +#define L4_SIGN_EXT_MASK (0x1FFFFUL << 47) #define LOW_ADDR (0x1UL << 30) #define HIGH_ADDR (0x3UL << 48) @@ -370,6 +379,80 @@ static int handle_syscall(struct testcases *test) return ret; } +static int get_user_syscall(struct testcases *test) +{ + uint64_t ptr_address, bitmask; + void *p, *ptr; + int ret = 0; + int fd; + + p = mmap((void *)HIGH_ADDR, 1, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0); + + if (p == MAP_FAILED) { + bitmask = L4_SIGN_EXT_MASK; + ptr_address = LOW_ADDR; + + } else { + bitmask = L5_SIGN_EXT_MASK; + ptr_address = HIGH_ADDR; + } + + munmap(p, 1); + + ptr = mmap((void *)ptr_address, 1, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0); + + if (ptr == MAP_FAILED) { + perror("failed to map byte to pass into get_user"); + return 1; + } + + if (test->lam != 0) { + if (set_lam(test->lam) != 0) { + ret = 2; + goto error; + } + } + + fd = memfd_create("lam_ioctl", 0); + if (fd == -1) { + munmap(ptr, 1); + exit(EXIT_FAILURE); + } + + switch (test->later) { + case GET_USER_USER: + /* Control group - properly tagger user pointer */ + ptr = (void *)set_metadata((uint64_t)ptr, test->lam); + break; + case GET_USER_KERNEL_TOP: + /* Kernel address with top bit cleared */ + bitmask &= (bitmask >> 1); + ptr = (void *)((uint64_t)ptr | bitmask); + break; + case GET_USER_KERNEL_BOT: + /* Kernel address with bottom sign-extension bit cleared */ + bitmask &= (bitmask << 1); + ptr = (void *)((uint64_t)ptr | bitmask); + break; + case GET_USER_KERNEL: + /* Try to pass a kernel address */ + ptr = (void *)((uint64_t)ptr | bitmask); + break; + default: + printf("Invalid test case value passed!\n"); + break; + } + + if (ioctl(fd, FIOASYNC, ptr) != 0) + ret = 1; + +error: + munmap(ptr, 1); + return ret; +} + int sys_uring_setup(unsigned int entries, struct io_uring_params *p) { return (int)syscall(__NR_io_uring_setup, entries, p); @@ -883,6 +966,33 @@ static struct testcases syscall_cases[] = { .test_func = handle_syscall, .msg = "SYSCALL:[Negative] Disable LAM. Dereferencing pointer with metadata.\n", }, + { + .later = GET_USER_USER, + .lam = LAM_U57_BITS, + .test_func = get_user_syscall, + .msg = "GET_USER: get_user() and pass a properly tagged user pointer.\n", + }, + { + .later = GET_USER_KERNEL_TOP, + .expected = 1, + .lam = LAM_U57_BITS, + .test_func = get_user_syscall, + .msg = "GET_USER:[Negative] get_user() with a kernel pointer and the top bit cleared.\n", + }, + { + .later = GET_USER_KERNEL_BOT, + .expected = 1, + .lam = LAM_U57_BITS, + .test_func = get_user_syscall, + .msg = "GET_USER:[Negative] get_user() with a kernel pointer and the bottom sign-extension bit cleared.\n", + }, + { + .later = GET_USER_KERNEL, + .expected = 1, + .lam = LAM_U57_BITS, + .test_func = get_user_syscall, + .msg = "GET_USER:[Negative] get_user() and pass a kernel pointer.\n", + }, }; static struct testcases mmap_cases[] = { -- 2.46.2

1 year, 1 month

2
2
0 0

[PATCH v5] Kunit to check the longest symbol length

by Sergio González Collado

The longest length of a symbol (KSYM_NAME_LEN) was increased to 512 in the reference [1]. This patch adds kunit test suite to check the longest symbol length. These tests verify that the longest symbol length defined is supported. This test can also help other efforts for longer symbol length, like [2]. The test suite defines two symbols, one with the longest length defined, and other one whit the longest length defined +1. In the test suite there are four tests, three positive and one negative. The first and third tests, verify that functions with names of the created symbols, can be called or not. The second and fourth tests, verify that the symbols are created (or not) in the kernel symbol table. [1] https://lore.kernel.org/lkml/20220802015052.10452-6-ojeda@kernel.org/ [2] https://lore.kernel.org/lkml/20240605032120.3179157-1-song@kernel.org/ Tested-by: Martin Rodriguez Reboredo <yakoyoku(a)gmail.com> Reviewed-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Sergio González Collado <sergio.collado(a)gmail.com> Link: https://github.com/Rust-for-Linux/linux/issues/504 --- V1 -> V2: corrected CI tests. Added fix proposed at [3] [3] https://lore.kernel.org/lkml/Y9ES4UKl%2F+DtvAVS@gmail.com/T/#m3ef0e12bb834d… --- V2 -> V3: updated base and added MODULE_DESCRIPTION() and MODULE_AUTHOR() --- V3 -> V4: add x86 mantainers, add new reference. --- V4 -> V5: fixed typo, added improved description The test execution shoud result in something like: ``` [20:04:35] =============== longest-symbol (4 subtests) ================ [20:04:35] [PASSED] test_longest_symbol [20:04:35] [PASSED] test_longest_symbol_kallsyms [20:04:35] [PASSED] test_longest_symbol_plus1 [20:04:35] [PASSED] test_longest_symbol_plus1_kallsyms [20:04:35] ================= [PASSED] longest-symbol ================== [20:04:35] ============================================================ [20:04:35] Testing complete. Ran 4 tests: passed: 4 ``` But also there are two warnings like: ``` Symbol snnnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnnnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nnng1h2i3j4k5l6m7ng1h2i3j4k5l6m7nng1h2i3j4k5l6m7ng1h2i3j4k5l6m7ne too long for kallsyms (512 >= 512). Please increase KSYM_NAME_LEN both in kernel and kallsyms.c ``` Because the tests try to generate simbols of the same length as KSYM_NAME_LEN. This is the expected outcome, as defined: https://lore.kernel.org/all/20131023130753.GO29695@two.firstfloor.org/ --- arch/x86/tools/insn_decoder_test.c | 3 +- lib/Kconfig.debug | 9 +++ lib/Makefile | 2 + lib/longest_symbol_kunit.c | 125 +++++++++++++++++++++++++++++ 4 files changed, 138 insertions(+), 1 deletion(-) create mode 100644 lib/longest_symbol_kunit.c diff --git a/arch/x86/tools/insn_decoder_test.c b/arch/x86/tools/insn_decoder_test.c index 472540aeabc2..3bde35ea4188 100644 --- a/arch/x86/tools/insn_decoder_test.c +++ b/arch/x86/tools/insn_decoder_test.c @@ -10,6 +10,7 @@ #include <assert.h> #include <unistd.h> #include <stdarg.h> +#include <linux/kallsysms.h> #define unlikely(cond) (cond) @@ -106,7 +107,7 @@ static void parse_args(int argc, char **argv) } } -#define BUFSIZE 256 +#define BUFSIZE (256 + KSYM_NAME_LEN) int main(int argc, char **argv) { diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 7312ae7c3cc5..1f3059176637 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2820,6 +2820,15 @@ config FORTIFY_KUNIT_TEST by the str*() and mem*() family of functions. For testing runtime traps of FORTIFY_SOURCE, see LKDTM's "FORTIFY_*" tests. +config LONGEST_SYM_KUNIT_TEST + tristate "Test the longest symbol possible" if !KUNIT_ALL_TESTS + depends on KUNIT && KPROBES + default KUNIT_ALL_TESTS + help + Tests the longest symbol possible + + If unsure, say N. + config HW_BREAKPOINT_KUNIT_TEST bool "Test hw_breakpoint constraints accounting" if !KUNIT_ALL_TESTS depends on HAVE_HW_BREAKPOINT diff --git a/lib/Makefile b/lib/Makefile index 773adf88af41..fc878e716825 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -389,6 +389,8 @@ CFLAGS_fortify_kunit.o += $(DISABLE_STRUCTLEAK_PLUGIN) obj-$(CONFIG_FORTIFY_KUNIT_TEST) += fortify_kunit.o obj-$(CONFIG_SIPHASH_KUNIT_TEST) += siphash_kunit.o obj-$(CONFIG_USERCOPY_KUNIT_TEST) += usercopy_kunit.o +obj-$(CONFIG_LONGEST_SYM_KUNIT_TEST) += longest_symbol_kunit.o +CFLAGS_longest_symbol_kunit.o += $(call cc-disable-warning, missing-prototypes) obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o diff --git a/lib/longest_symbol_kunit.c b/lib/longest_symbol_kunit.c new file mode 100644 index 000000000000..ebd26eedbf7b --- /dev/null +++ b/lib/longest_symbol_kunit.c @@ -0,0 +1,125 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test the longest symbol length. Execute with: + * ./tools/testing/kunit/kunit.py run longest-symbol + * --arch=x86_64 --kconfig_add CONFIG_KPROBES=y --kconfig_add CONFIG_MODULES=y + * --kconfig_add CONFIG_RETPOLINE=n --kconfig_add CONFIG_CFI_CLANG=n + * --kconfig_add CONFIG_MITIGATION_RETPOLINE=n + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <kunit/test.h> +#include <linux/stringify.h> +#include <linux/kprobes.h> +#include <linux/kallsyms.h> + +#define DI(name) s##name##name +#define DDI(name) DI(n##name##name) +#define DDDI(name) DDI(n##name##name) +#define DDDDI(name) DDDI(n##name##name) +#define DDDDDI(name) DDDDI(n##name##name) + +#define PLUS1(name) __PASTE(name, e) + +/*Generate a symbol whose name length is 511 */ +#define LONGEST_SYM_NAME DDDDDI(g1h2i3j4k5l6m7n) + +/*Generate a symbol whose name length is 512 */ +#define LONGEST_SYM_NAME_PLUS1 PLUS1(LONGEST_SYM_NAME) + +#define RETURN_LONGEST_SYM 0xAAAAA +#define RETURN_LONGEST_SYM_PLUS1 0x55555 + +noinline int LONGEST_SYM_NAME(void); +noinline int LONGEST_SYM_NAME(void) +{ + return RETURN_LONGEST_SYM; +} + +noinline int LONGEST_SYM_NAME_PLUS1(void); +noinline int LONGEST_SYM_NAME_PLUS1(void) +{ + return RETURN_LONGEST_SYM_PLUS1; +} + +_Static_assert(sizeof(__stringify(LONGEST_SYM_NAME)) == KSYM_NAME_LEN, +"Incorrect symbol length found. Expected KSYM_NAME_LEN: " +__stringify(KSYM_NAME) ", but found: " +__stringify(sizeof(LONGEST_SYM_NAME))); + +static void test_longest_symbol(struct kunit *test) +{ + KUNIT_EXPECT_EQ(test, RETURN_LONGEST_SYM, LONGEST_SYM_NAME()); +}; + +static void test_longest_symbol_kallsyms(struct kunit *test) +{ + unsigned long (*kallsyms_lookup_name)(const char *name); + static int (*longest_sym)(void); + + struct kprobe kp = { + .symbol_name = "kallsyms_lookup_name", + }; + + if (register_kprobe(&kp) < 0) { + pr_info("%s: kprobe not registered\n", __func__); + KUNIT_FAIL(test, "test_longest_symbol kallsysms: kprobe not registered\n"); + return; + } + + kunit_warn(test, "test_longest_symbol kallsyms: kprobe registered\n"); + kallsyms_lookup_name = (unsigned long (*)(const char *name))kp.addr; + unregister_kprobe(&kp); + + longest_sym = + (void *) kallsyms_lookup_name(__stringify(LONGEST_SYM_NAME)); + KUNIT_EXPECT_EQ(test, RETURN_LONGEST_SYM, longest_sym()); +}; + +static void test_longest_symbol_plus1(struct kunit *test) +{ + KUNIT_EXPECT_EQ(test, RETURN_LONGEST_SYM_PLUS1, LONGEST_SYM_NAME_PLUS1()); +}; + +static void test_longest_symbol_plus1_kallsyms(struct kunit *test) +{ + unsigned long (*kallsyms_lookup_name)(const char *name); + static int (*longest_sym_plus1)(void); + + struct kprobe kp = { + .symbol_name = "kallsyms_lookup_name", + }; + + if (register_kprobe(&kp) < 0) { + pr_info("%s: kprobe not registered\n", __func__); + KUNIT_FAIL(test, "test_longest_symbol kallsysms: kprobe not registered\n"); + return; + } + + kunit_warn(test, "test_longest_symbol_plus1 kallsyms: kprobe registered\n"); + kallsyms_lookup_name = (unsigned long (*)(const char *name))kp.addr; + unregister_kprobe(&kp); + + longest_sym_plus1 = + (void *) kallsyms_lookup_name(__stringify(LONGEST_SYM_NAME_PLUS1)); + KUNIT_EXPECT_NULL(test, longest_sym_plus1); +}; + +static struct kunit_case longest_symbol_test_cases[] = { + KUNIT_CASE(test_longest_symbol), + KUNIT_CASE(test_longest_symbol_kallsyms), + KUNIT_CASE(test_longest_symbol_plus1), + KUNIT_CASE(test_longest_symbol_plus1_kallsyms), + {} +}; + +static struct kunit_suite longest_symbol_test_suite = { + .name = "longest-symbol", + .test_cases = longest_symbol_test_cases, +}; +kunit_test_suite(longest_symbol_test_suite); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Test the longest symbol length"); +MODULE_AUTHOR("Sergio González Collado"); -- 2.39.2

1 year, 1 month

2
2
0 0

[PATCH net-next v4 0/5] net: Improve netns handling in RTNL and ip_tunnel

by Xiao Liang

This patch series includes some netns-related improvements and fixes for RTNL and ip_tunnel, to make link creation more intuitive: - Creating link in another net namespace doesn't conflict with link names in current one. - Refector rtnetlink link creation. Create link in target namespace directly. Pass both source and link netns to drivers via newlink() callback. So that # ip link add netns ns1 link-netns ns2 tun0 type gre ... will create tun0 in ns1, rather than create it in ns2 and move to ns1. And don't conflict with another interface named "tun0" in current netns. --- v4: - Pack newlink() parameters to a single struct. - Use ynl async_msg_queue.empty() in selftest. v3: link: https://lore.kernel.org/all/20241113125715.150201-1-shaw.leon@gmail.com/ - Drop "netns_atomic" flag and module parameter. Add netns parameter to newlink() instead, and convert drivers accordingly. - Move python NetNSEnter helper to net selftest lib. v2: link: https://lore.kernel.org/all/20241107133004.7469-1-shaw.leon@gmail.com/ - Check NLM_F_EXCL to ensure only link creation is affected. - Add self tests for link name/ifindex conflict and notifications in different netns. - Changes in dummy driver and ynl in order to add the test case. v1: link: https://lore.kernel.org/all/20241023023146.372653-1-shaw.leon@gmail.com/ Xiao Liang (5): net: ip_tunnel: Build flow in underlay net namespace rtnetlink: Lookup device in target netns when creating link rtnetlink: Decouple net namespaces in rtnl_newlink_create() selftests: net: Add python context manager for netns entering selftests: net: Add two test cases for link netns drivers/infiniband/ulp/ipoib/ipoib_netlink.c | 11 ++++-- drivers/net/amt.c | 13 ++++--- drivers/net/bareudp.c | 11 ++++-- drivers/net/bonding/bond_netlink.c | 8 ++-- drivers/net/can/dev/netlink.c | 4 +- drivers/net/can/vxcan.c | 11 ++++-- .../ethernet/qualcomm/rmnet/rmnet_config.c | 11 ++++-- drivers/net/geneve.c | 11 ++++-- drivers/net/gtp.c | 9 +++-- drivers/net/ipvlan/ipvlan.h | 4 +- drivers/net/ipvlan/ipvlan_main.c | 11 ++++-- drivers/net/ipvlan/ipvtap.c | 7 ++-- drivers/net/macsec.c | 11 ++++-- drivers/net/macvlan.c | 8 ++-- drivers/net/macvtap.c | 8 ++-- drivers/net/netkit.c | 11 ++++-- drivers/net/pfcp.c | 8 ++-- drivers/net/ppp/ppp_generic.c | 10 +++-- drivers/net/team/team_core.c | 7 ++-- drivers/net/veth.c | 11 ++++-- drivers/net/vrf.c | 7 ++-- drivers/net/vxlan/vxlan_core.c | 11 ++++-- drivers/net/wireguard/device.c | 8 ++-- drivers/net/wireless/virtual/virt_wifi.c | 10 +++-- drivers/net/wwan/wwan_core.c | 15 +++++-- include/net/ip_tunnels.h | 5 ++- include/net/rtnetlink.h | 34 +++++++++++++--- net/8021q/vlan_netlink.c | 11 ++++-- net/batman-adv/soft-interface.c | 8 ++-- net/bridge/br_netlink.c | 8 ++-- net/caif/chnl_net.c | 6 +-- net/core/rtnetlink.c | 29 +++++++++----- net/hsr/hsr_netlink.c | 14 ++++--- net/ieee802154/6lowpan/core.c | 9 +++-- net/ipv4/ip_gre.c | 27 ++++++++----- net/ipv4/ip_tunnel.c | 16 ++++---- net/ipv4/ip_vti.c | 10 +++-- net/ipv4/ipip.c | 10 +++-- net/ipv6/ip6_gre.c | 28 +++++++------ net/ipv6/ip6_tunnel.c | 16 ++++---- net/ipv6/ip6_vti.c | 15 ++++--- net/ipv6/sit.c | 16 ++++---- net/xfrm/xfrm_interface_core.c | 14 +++---- tools/testing/selftests/net/Makefile | 1 + .../testing/selftests/net/lib/py/__init__.py | 2 +- tools/testing/selftests/net/lib/py/netns.py | 18 +++++++++ tools/testing/selftests/net/netns-name.sh | 10 +++++ tools/testing/selftests/net/netns_atomic.py | 39 +++++++++++++++++++ 48 files changed, 377 insertions(+), 205 deletions(-) create mode 100755 tools/testing/selftests/net/netns_atomic.py -- 2.47.0

1 year, 1 month

3
7
0 0

[PATCH net v2 2/2] selftests: net: test extacks in netlink dumps

by Jakub Kicinski

Test that extacks in dumps work. The test fills up the receive buffer to test both the inline dump (as part of sendmsg()) and delayed one (run during recvmsg()). Use YNL helpers to parse the messages. We need to add the test to YNL file to make sure the right include path are used. Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: linux-kselftest(a)vger.kernel.org --- tools/testing/selftests/net/Makefile | 3 +- tools/testing/selftests/net/netlink-dumps.c | 129 ++++++++++++++++++++ 2 files changed, 130 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index 5e86f7a51b43..c427ee32b193 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -78,7 +78,6 @@ TEST_PROGS += test_vxlan_vnifiltering.sh TEST_GEN_FILES += io_uring_zerocopy_tx TEST_PROGS += io_uring_zerocopy_tx.sh TEST_GEN_FILES += bind_bhash -TEST_GEN_PROGS += netlink-dumps TEST_GEN_PROGS += sk_bind_sendto_listen TEST_GEN_PROGS += sk_connect_zero_addr TEST_GEN_PROGS += sk_so_peek_off @@ -100,7 +99,7 @@ TEST_PROGS += bpf_offload.py # YNL files, must be before "include ..lib.mk" EXTRA_CLEAN += $(OUTPUT)/libynl.a -YNL_GEN_FILES := ncdevmem +YNL_GEN_FILES := ncdevmem netlink-dumps TEST_GEN_FILES += $(YNL_GEN_FILES) TEST_FILES := settings diff --git a/tools/testing/selftests/net/netlink-dumps.c b/tools/testing/selftests/net/netlink-dumps.c index 7ee6dcd334df..195febbf6a61 100644 --- a/tools/testing/selftests/net/netlink-dumps.c +++ b/tools/testing/selftests/net/netlink-dumps.c @@ -12,11 +12,140 @@ #include <unistd.h> #include <linux/genetlink.h> +#include <linux/neighbour.h> +#include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/mqueue.h> +#include <linux/rtnetlink.h> #include "../kselftest_harness.h" +#include <ynl.h> + +struct ext_ack { + int err; + + __u32 attr_offs; + __u32 miss_type; + __u32 miss_nest; + const char *str; +}; + +/* 0: no done, 1: done found, 2: extack found, -1: error */ +static int nl_get_extack(char *buf, size_t n, struct ext_ack *ea) +{ + const struct nlmsghdr *nlh; + const struct nlattr *attr; + ssize_t rem; + + for (rem = n; rem > 0; NLMSG_NEXT(nlh, rem)) { + nlh = (struct nlmsghdr *)&buf[n - rem]; + if (!NLMSG_OK(nlh, rem)) + return -1; + + if (nlh->nlmsg_type != NLMSG_DONE) + continue; + + ea->err = -*(int *)NLMSG_DATA(nlh); + + if (!(nlh->nlmsg_flags & NLM_F_ACK_TLVS)) + return 1; + + ynl_attr_for_each(attr, nlh, sizeof(int)) { + switch (ynl_attr_type(attr)) { + case NLMSGERR_ATTR_OFFS: + ea->attr_offs = ynl_attr_get_u32(attr); + break; + case NLMSGERR_ATTR_MISS_TYPE: + ea->miss_type = ynl_attr_get_u32(attr); + break; + case NLMSGERR_ATTR_MISS_NEST: + ea->miss_nest = ynl_attr_get_u32(attr); + break; + case NLMSGERR_ATTR_MSG: + ea->str = ynl_attr_get_str(attr); + break; + } + } + + return 2; + } + + return 0; +} + +static const struct { + struct nlmsghdr nlhdr; + struct ndmsg ndm; + struct nlattr ahdr; + __u32 val; +} dump_neigh_bad = { + .nlhdr = { + .nlmsg_len = sizeof(dump_neigh_bad), + .nlmsg_type = RTM_GETNEIGH, + .nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP, + .nlmsg_seq = 1, + }, + .ndm = { + .ndm_family = 123, + }, + .ahdr = { + .nla_len = 4 + 4, + .nla_type = NDA_FLAGS_EXT, + }, + .val = -1, // should fail MASK validation +}; + +TEST(dump_extack) +{ + int netlink_sock; + char buf[8192]; + int one = 1; + int i, cnt; + ssize_t n; + + netlink_sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); + ASSERT_GE(netlink_sock, 0); + + n = setsockopt(netlink_sock, SOL_NETLINK, NETLINK_CAP_ACK, + &one, sizeof(one)); + ASSERT_EQ(n, 0); + n = setsockopt(netlink_sock, SOL_NETLINK, NETLINK_EXT_ACK, + &one, sizeof(one)); + ASSERT_EQ(n, 0); + n = setsockopt(netlink_sock, SOL_NETLINK, NETLINK_GET_STRICT_CHK, + &one, sizeof(one)); + ASSERT_EQ(n, 0); + + /* Dump so many times we fill up the buffer */ + cnt = 64; + for (i = 0; i < cnt; i++) { + n = send(netlink_sock, &dump_neigh_bad, + sizeof(dump_neigh_bad), 0); + ASSERT_EQ(n, sizeof(dump_neigh_bad)); + } + + /* Read out the ENOBUFS */ + n = recv(netlink_sock, buf, sizeof(buf), MSG_DONTWAIT); + EXPECT_EQ(n, -1); + EXPECT_EQ(errno, ENOBUFS); + + for (i = 0; i < cnt; i++) { + struct ext_ack ea = {}; + + n = recv(netlink_sock, buf, sizeof(buf), MSG_DONTWAIT); + if (n < 0) { + ASSERT_GE(i, 10); + break; + } + ASSERT_GE(n, (ssize_t)sizeof(struct nlmsghdr)); + + EXPECT_EQ(nl_get_extack(buf, n, &ea), 2); + EXPECT_EQ(ea.attr_offs, + sizeof(struct nlmsghdr) + sizeof(struct ndmsg)); + } +} + static const struct { struct nlmsghdr nlhdr; struct genlmsghdr genlhdr; -- 2.47.0

1 year, 1 month

2
1
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, 1 month

7
16
0 0

[PATCH livepatch/master v1 1/6] selftests/livepatch: fix test-callbacks.sh execution error

by George Guo

From: George Guo <guodongtai(a)kylinos.cn> The script test-callbacks.sh fails with the following error: $ sudo ./test-callbacks.sh TEST: target module before livepatch ... not ok - expected + result test_klp_callbacks_mod: test_klp_callbacks_mod_init % insmod test_modules/test_klp_callbacks_demo.ko livepatch: enabling patch 'test_klp_callbacks_demo' -livepatch: 'test_klp_callbacks_demo': initializing patching transition +transition: 'test_klp_callbacks_demo': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux test_klp_callbacks_demo: pre_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state -livepatch: 'test_klp_callbacks_demo': starting patching transition -livepatch: 'test_klp_callbacks_demo': completing patching transition +transition: 'test_klp_callbacks_demo': starting patching transition +transition: 'test_klp_callbacks_demo': completing patching transition test_klp_callbacks_demo: post_patch_callback: vmlinux test_klp_callbacks_demo: post_patch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state -livepatch: 'test_klp_callbacks_demo': patching complete +transition: 'test_klp_callbacks_demo': patching complete % echo 0 > /sys/kernel/livepatch/test_klp_callbacks_demo/enabled -livepatch: 'test_klp_callbacks_demo': initializing unpatching transition +transition: 'test_klp_callbacks_demo': initializing unpatching transition test_klp_callbacks_demo: pre_unpatch_callback: vmlinux test_klp_callbacks_demo: pre_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state -livepatch: 'test_klp_callbacks_demo': starting unpatching transition -livepatch: 'test_klp_callbacks_demo': completing unpatching transition +transition: 'test_klp_callbacks_demo': starting unpatching transition +transition: 'test_klp_callbacks_demo': completing unpatching transition test_klp_callbacks_demo: post_unpatch_callback: vmlinux test_klp_callbacks_demo: post_unpatch_callback: test_klp_callbacks_mod -> [MODULE_STATE_LIVE] Normal state -livepatch: 'test_klp_callbacks_demo': unpatching complete +transition: 'test_klp_callbacks_demo': unpatching complete % rmmod test_klp_callbacks_demo % rmmod test_klp_callbacks_mod test_klp_callbacks_mod: test_klp_callbacks_mod_exit ERROR: livepatch kselftest(s) failed The issue arises due to a mismatch in expected log output during livepatch transition. Specifically, the logs previously contained "livepatch:" but have now been updated to "transition:". This results in test failures when comparing the output with the expected values. This patch updates the expected test output to reflect the new log format. Signed-off-by: George Guo <guodongtai(a)kylinos.cn> --- .../selftests/livepatch/test-callbacks.sh | 188 +++++++++--------- 1 file changed, 94 insertions(+), 94 deletions(-) diff --git a/tools/testing/selftests/livepatch/test-callbacks.sh b/tools/testing/selftests/livepatch/test-callbacks.sh index 32b150e25b10..08a33c15bb29 100755 --- a/tools/testing/selftests/livepatch/test-callbacks.sh +++ b/tools/testing/selftests/livepatch/test-callbacks.sh @@ -38,23 +38,23 @@ check_result "% insmod test_modules/$MOD_TARGET.ko $MOD_TARGET: ${MOD_TARGET}_init % insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': starting patching transition -livepatch: '$MOD_LIVEPATCH': completing patching transition +transition: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux $MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': patching complete +transition: '$MOD_LIVEPATCH': patching complete % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled -livepatch: '$MOD_LIVEPATCH': initializing unpatching transition +transition: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': starting unpatching transition -livepatch: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': starting unpatching transition +transition: '$MOD_LIVEPATCH': completing unpatching transition $MOD_LIVEPATCH: post_unpatch_callback: vmlinux $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH % rmmod $MOD_TARGET $MOD_TARGET: ${MOD_TARGET}_exit" @@ -83,26 +83,26 @@ unload_mod $MOD_TARGET check_result "% insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting patching transition -livepatch: '$MOD_LIVEPATCH': completing patching transition +transition: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': patching complete +transition: '$MOD_LIVEPATCH': patching complete % insmod test_modules/$MOD_TARGET.ko livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init $MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init $MOD_TARGET: ${MOD_TARGET}_init % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled -livepatch: '$MOD_LIVEPATCH': initializing unpatching transition +transition: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': starting unpatching transition -livepatch: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': starting unpatching transition +transition: '$MOD_LIVEPATCH': completing unpatching transition $MOD_LIVEPATCH: post_unpatch_callback: vmlinux $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH % rmmod $MOD_TARGET $MOD_TARGET: ${MOD_TARGET}_exit" @@ -133,26 +133,26 @@ check_result "% insmod test_modules/$MOD_TARGET.ko $MOD_TARGET: ${MOD_TARGET}_init % insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': starting patching transition -livepatch: '$MOD_LIVEPATCH': completing patching transition +transition: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux $MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': patching complete +transition: '$MOD_LIVEPATCH': patching complete % rmmod $MOD_TARGET $MOD_TARGET: ${MOD_TARGET}_exit $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled -livepatch: '$MOD_LIVEPATCH': initializing unpatching transition +transition: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting unpatching transition -livepatch: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': starting unpatching transition +transition: '$MOD_LIVEPATCH': completing unpatching transition $MOD_LIVEPATCH: post_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH" @@ -179,12 +179,12 @@ unload_lp $MOD_LIVEPATCH check_result "% insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting patching transition -livepatch: '$MOD_LIVEPATCH': completing patching transition +transition: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': patching complete +transition: '$MOD_LIVEPATCH': patching complete % insmod test_modules/$MOD_TARGET.ko livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init @@ -196,12 +196,12 @@ $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled -livepatch: '$MOD_LIVEPATCH': initializing unpatching transition +transition: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting unpatching transition -livepatch: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': starting unpatching transition +transition: '$MOD_LIVEPATCH': completing unpatching transition $MOD_LIVEPATCH: post_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH" @@ -221,19 +221,19 @@ unload_lp $MOD_LIVEPATCH check_result "% insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting patching transition -livepatch: '$MOD_LIVEPATCH': completing patching transition +transition: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': patching complete +transition: '$MOD_LIVEPATCH': patching complete % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled -livepatch: '$MOD_LIVEPATCH': initializing unpatching transition +transition: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting unpatching transition -livepatch: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': starting unpatching transition +transition: '$MOD_LIVEPATCH': completing unpatching transition $MOD_LIVEPATCH: post_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH" @@ -258,13 +258,13 @@ check_result "% insmod test_modules/$MOD_TARGET.ko $MOD_TARGET: ${MOD_TARGET}_init % insmod test_modules/$MOD_LIVEPATCH.ko pre_patch_ret=-19 livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition test_klp_callbacks_demo: pre_patch_callback: vmlinux livepatch: pre-patch callback failed for object 'vmlinux' livepatch: failed to enable patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': canceling patching transition, going to unpatch -livepatch: '$MOD_LIVEPATCH': completing unpatching transition -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': canceling patching transition, going to unpatch +transition: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': unpatching complete insmod: ERROR: could not insert module test_modules/$MOD_LIVEPATCH.ko: No such device % rmmod $MOD_TARGET $MOD_TARGET: ${MOD_TARGET}_exit" @@ -297,12 +297,12 @@ unload_lp $MOD_LIVEPATCH check_result "% insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting patching transition -livepatch: '$MOD_LIVEPATCH': completing patching transition +transition: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': patching complete +transition: '$MOD_LIVEPATCH': patching complete % echo -19 > /sys/module/$MOD_LIVEPATCH/parameters/pre_patch_ret % insmod test_modules/$MOD_TARGET.ko livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' @@ -311,12 +311,12 @@ livepatch: pre-patch callback failed for object '$MOD_TARGET' livepatch: patch '$MOD_LIVEPATCH' failed for module '$MOD_TARGET', refusing to load module '$MOD_TARGET' insmod: ERROR: could not insert module test_modules/$MOD_TARGET.ko: No such device % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled -livepatch: '$MOD_LIVEPATCH': initializing unpatching transition +transition: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting unpatching transition -livepatch: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': starting unpatching transition +transition: '$MOD_LIVEPATCH': completing unpatching transition $MOD_LIVEPATCH: post_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH" @@ -346,14 +346,14 @@ $MOD_TARGET_BUSY: busymod_work_func enter $MOD_TARGET_BUSY: busymod_work_func exit % insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': starting patching transition -livepatch: '$MOD_LIVEPATCH': completing patching transition +transition: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux $MOD_LIVEPATCH: post_patch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': patching complete +transition: '$MOD_LIVEPATCH': patching complete % insmod test_modules/$MOD_TARGET.ko livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init @@ -365,14 +365,14 @@ $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled -livepatch: '$MOD_LIVEPATCH': initializing unpatching transition +transition: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux $MOD_LIVEPATCH: pre_unpatch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': starting unpatching transition -livepatch: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': starting unpatching transition +transition: '$MOD_LIVEPATCH': completing unpatching transition $MOD_LIVEPATCH: post_unpatch_callback: vmlinux $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH % rmmod $MOD_TARGET_BUSY $MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_exit" @@ -426,10 +426,10 @@ $MOD_TARGET_BUSY: ${MOD_TARGET_BUSY}_init $MOD_TARGET_BUSY: busymod_work_func enter % insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': starting patching transition % insmod test_modules/$MOD_TARGET.ko livepatch: applying patch '$MOD_LIVEPATCH' to loading module '$MOD_TARGET' $MOD_LIVEPATCH: pre_patch_callback: $MOD_TARGET -> [MODULE_STATE_COMING] Full formed, running module_init @@ -439,12 +439,12 @@ $MOD_TARGET: ${MOD_TARGET}_exit livepatch: reverting patch '$MOD_LIVEPATCH' on unloading module '$MOD_TARGET' $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET -> [MODULE_STATE_GOING] Going away % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled -livepatch: '$MOD_LIVEPATCH': reversing transition from patching to unpatching -livepatch: '$MOD_LIVEPATCH': starting unpatching transition -livepatch: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': reversing transition from patching to unpatching +transition: '$MOD_LIVEPATCH': starting unpatching transition +transition: '$MOD_LIVEPATCH': completing unpatching transition $MOD_LIVEPATCH: post_unpatch_callback: vmlinux $MOD_LIVEPATCH: post_unpatch_callback: $MOD_TARGET_BUSY -> [MODULE_STATE_LIVE] Normal state -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH % rmmod $MOD_TARGET_BUSY $MOD_TARGET_BUSY: busymod_work_func exit @@ -469,34 +469,34 @@ unload_lp $MOD_LIVEPATCH check_result "% insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting patching transition -livepatch: '$MOD_LIVEPATCH': completing patching transition +transition: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': patching complete +transition: '$MOD_LIVEPATCH': patching complete % insmod test_modules/$MOD_LIVEPATCH2.ko livepatch: enabling patch '$MOD_LIVEPATCH2' -livepatch: '$MOD_LIVEPATCH2': initializing patching transition +transition: '$MOD_LIVEPATCH2': initializing patching transition $MOD_LIVEPATCH2: pre_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH2': starting patching transition -livepatch: '$MOD_LIVEPATCH2': completing patching transition +transition: '$MOD_LIVEPATCH2': starting patching transition +transition: '$MOD_LIVEPATCH2': completing patching transition $MOD_LIVEPATCH2: post_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH2': patching complete +transition: '$MOD_LIVEPATCH2': patching complete % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled -livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition +transition: '$MOD_LIVEPATCH2': initializing unpatching transition $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH2': starting unpatching transition -livepatch: '$MOD_LIVEPATCH2': completing unpatching transition +transition: '$MOD_LIVEPATCH2': starting unpatching transition +transition: '$MOD_LIVEPATCH2': completing unpatching transition $MOD_LIVEPATCH2: post_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH2': unpatching complete +transition: '$MOD_LIVEPATCH2': unpatching complete % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH/enabled -livepatch: '$MOD_LIVEPATCH': initializing unpatching transition +transition: '$MOD_LIVEPATCH': initializing unpatching transition $MOD_LIVEPATCH: pre_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting unpatching transition -livepatch: '$MOD_LIVEPATCH': completing unpatching transition +transition: '$MOD_LIVEPATCH': starting unpatching transition +transition: '$MOD_LIVEPATCH': completing unpatching transition $MOD_LIVEPATCH: post_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': unpatching complete +transition: '$MOD_LIVEPATCH': unpatching complete % rmmod $MOD_LIVEPATCH2 % rmmod $MOD_LIVEPATCH" @@ -525,27 +525,27 @@ unload_lp $MOD_LIVEPATCH check_result "% insmod test_modules/$MOD_LIVEPATCH.ko livepatch: enabling patch '$MOD_LIVEPATCH' -livepatch: '$MOD_LIVEPATCH': initializing patching transition +transition: '$MOD_LIVEPATCH': initializing patching transition $MOD_LIVEPATCH: pre_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': starting patching transition -livepatch: '$MOD_LIVEPATCH': completing patching transition +transition: '$MOD_LIVEPATCH': starting patching transition +transition: '$MOD_LIVEPATCH': completing patching transition $MOD_LIVEPATCH: post_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH': patching complete +transition: '$MOD_LIVEPATCH': patching complete % insmod test_modules/$MOD_LIVEPATCH2.ko replace=1 livepatch: enabling patch '$MOD_LIVEPATCH2' -livepatch: '$MOD_LIVEPATCH2': initializing patching transition +transition: '$MOD_LIVEPATCH2': initializing patching transition $MOD_LIVEPATCH2: pre_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH2': starting patching transition -livepatch: '$MOD_LIVEPATCH2': completing patching transition +transition: '$MOD_LIVEPATCH2': starting patching transition +transition: '$MOD_LIVEPATCH2': completing patching transition $MOD_LIVEPATCH2: post_patch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH2': patching complete +transition: '$MOD_LIVEPATCH2': patching complete % echo 0 > /sys/kernel/livepatch/$MOD_LIVEPATCH2/enabled -livepatch: '$MOD_LIVEPATCH2': initializing unpatching transition +transition: '$MOD_LIVEPATCH2': initializing unpatching transition $MOD_LIVEPATCH2: pre_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH2': starting unpatching transition -livepatch: '$MOD_LIVEPATCH2': completing unpatching transition +transition: '$MOD_LIVEPATCH2': starting unpatching transition +transition: '$MOD_LIVEPATCH2': completing unpatching transition $MOD_LIVEPATCH2: post_unpatch_callback: vmlinux -livepatch: '$MOD_LIVEPATCH2': unpatching complete +transition: '$MOD_LIVEPATCH2': unpatching complete % rmmod $MOD_LIVEPATCH2 % rmmod $MOD_LIVEPATCH" -- 2.39.2

1 year, 1 month

2
6
0 0

[PATCH v1] selftests: mm: Fix conversion specifiers in transact_test()

by guanjing

Lots of incorrect conversion specifiers. Fix them. Fixes: 46fd75d4a3c9 ("selftests: mm: add pagemap ioctl tests") Signed-off-by: guanjing <guanjing(a)cmss.chinamobile.com> --- tools/testing/selftests/mm/pagemap_ioctl.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/mm/pagemap_ioctl.c b/tools/testing/selftests/mm/pagemap_ioctl.c index bcc73b4e805c..fdafce0654e9 100644 --- a/tools/testing/selftests/mm/pagemap_ioctl.c +++ b/tools/testing/selftests/mm/pagemap_ioctl.c @@ -1405,9 +1405,9 @@ static void transact_test(int page_size) memset(mem, 0, 0x1000 * nthreads * pages_per_thread); count = get_dirty_pages_reset(mem, nthreads * pages_per_thread, 1, page_size); - ksft_test_result(count > 0, "%s count %d\n", __func__, count); + ksft_test_result(count > 0, "%s count %u\n", __func__, count); count = get_dirty_pages_reset(mem, nthreads * pages_per_thread, 1, page_size); - ksft_test_result(count == 0, "%s count %d\n", __func__, count); + ksft_test_result(count == 0, "%s count %u\n", __func__, count); finish = 0; for (i = 0; i < nthreads; ++i) @@ -1429,7 +1429,7 @@ static void transact_test(int page_size) ksft_exit_fail_msg("pthread_barrier_wait\n"); if (count > nthreads * access_per_thread) - ksft_exit_fail_msg("Too big count %d expected %d, iter %d\n", + ksft_exit_fail_msg("Too big count %u expected %u, iter %u\n", count, nthreads * access_per_thread, i); c = get_dirty_pages_reset(mem, nthreads * pages_per_thread, 1, page_size); @@ -1454,7 +1454,7 @@ static void transact_test(int page_size) * access and application gets page fault again for the same write. */ if (count < nthreads * access_per_thread) { - ksft_test_result_fail("Lost update, iter %d, %d vs %d.\n", i, count, + ksft_test_result_fail("Lost update, iter %u, %u vs %u.\n", i, count, nthreads * access_per_thread); return; } @@ -1467,7 +1467,7 @@ static void transact_test(int page_size) finish = 1; pthread_barrier_wait(&end_barrier); - ksft_test_result_pass("%s Extra pages %u (%.1lf%%), extra thread faults %d.\n", __func__, + ksft_test_result_pass("%s Extra pages %u (%.1lf%%), extra thread faults %u.\n", __func__, extra_pages, 100.0 * extra_pages / (iter_count * nthreads * access_per_thread), extra_thread_faults); -- 2.33.0

1 year, 1 month

2
2
0 0

[PATCH v2] selftests/lam: Test get_user() LAM pointer handling

by Maciej Wieczor-Retman

Recent change in how get_user() handles pointers [1] has a specific case for LAM. It assigns a different bitmask that's later used to check whether a pointer comes from userland in get_user(). While currently commented out (until LASS [2] is merged into the kernel) it's worth making changes to the LAM selftest ahead of time. Add test case to LAM that utilizes a ioctl (FIOASYNC) syscall which uses get_user() in its implementation. Execute the syscall with differently tagged pointers to verify that valid user pointers are passing through and invalid kernel/non-canonical pointers are not. Code was tested on a Sierra Forest Xeon machine that's LAM capable. The test was ran without issues with both the LAM lines from [1] untouched and commented out. The test was also ran without issues with LAM_SUP both enabled and disabled. 4/5 level pagetables code paths were also successfully tested in Simics on a 5-level capable machine. [1] https://lore.kernel.org/all/20241024013214.129639-1-torvalds@linux-foundati… [2] https://lore.kernel.org/all/20240710160655.3402786-1-alexander.shishkin@lin… Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman(a)intel.com> --- Changelog v2: - Use mmap with HIGH_ADDR to check if we're in 5 or 4 level pagetables. tools/testing/selftests/x86/lam.c | 89 +++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) diff --git a/tools/testing/selftests/x86/lam.c b/tools/testing/selftests/x86/lam.c index 0ea4f6813930..5818c075e1cd 100644 --- a/tools/testing/selftests/x86/lam.c +++ b/tools/testing/selftests/x86/lam.c @@ -4,6 +4,7 @@ #include <stdlib.h> #include <string.h> #include <sys/syscall.h> +#include <sys/ioctl.h> #include <time.h> #include <signal.h> #include <setjmp.h> @@ -43,7 +44,15 @@ #define FUNC_INHERITE 0x20 #define FUNC_PASID 0x40 +/* get_user() pointer test cases */ +#define GET_USER_USER 0 +#define GET_USER_KERNEL_TOP 1 +#define GET_USER_KERNEL_BOT 2 +#define GET_USER_KERNEL 3 + #define TEST_MASK 0x7f +#define L5_SIGN_EXT_MASK (0xFFUL << 56) +#define L4_SIGN_EXT_MASK (0x1FFFFUL << 47) #define LOW_ADDR (0x1UL << 30) #define HIGH_ADDR (0x3UL << 48) @@ -370,6 +379,59 @@ static int handle_syscall(struct testcases *test) return ret; } +static int get_user_syscall(struct testcases *test) +{ + int ptr_value = 0; + int ret = 0; + int fd; + void *p, *ptr = &ptr_value; + + p = mmap((void *)HIGH_ADDR, 1, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0); + + uint64_t bitmask = (p == MAP_FAILED) ? L4_SIGN_EXT_MASK : + L5_SIGN_EXT_MASK; + + munmap(p, 1); + + if (test->lam != 0) + if (set_lam(test->lam) != 0) + return 2; + + fd = memfd_create("lam_ioctl", 0); + if (fd == -1) + exit(EXIT_FAILURE); + + switch (test->later) { + case GET_USER_USER: + /* Control group - properly tagger user pointer */ + ptr = (void *)set_metadata((uint64_t)ptr, test->lam); + break; + case GET_USER_KERNEL_TOP: + /* Kernel address with top bit cleared */ + bitmask &= (bitmask >> 1); + ptr = (void *)((uint64_t)ptr | bitmask); + break; + case GET_USER_KERNEL_BOT: + /* Kernel address with bottom sign-extension bit cleared */ + bitmask &= (bitmask << 1); + ptr = (void *)((uint64_t)ptr | bitmask); + break; + case GET_USER_KERNEL: + /* Try to pass a kernel address */ + ptr = (void *)((uint64_t)ptr | bitmask); + break; + default: + printf("Invalid test case value passed!\n"); + break; + } + + if (ioctl(fd, FIOASYNC, ptr) != 0) + ret = 1; + + return ret; +} + int sys_uring_setup(unsigned int entries, struct io_uring_params *p) { return (int)syscall(__NR_io_uring_setup, entries, p); @@ -883,6 +945,33 @@ static struct testcases syscall_cases[] = { .test_func = handle_syscall, .msg = "SYSCALL:[Negative] Disable LAM. Dereferencing pointer with metadata.\n", }, + { + .later = GET_USER_USER, + .lam = LAM_U57_BITS, + .test_func = get_user_syscall, + .msg = "GET_USER: get_user() and pass a properly tagged user pointer.\n", + }, + { + .later = GET_USER_KERNEL_TOP, + .expected = 1, + .lam = LAM_U57_BITS, + .test_func = get_user_syscall, + .msg = "GET_USER:[Negative] get_user() with a kernel pointer and the top bit cleared.\n", + }, + { + .later = GET_USER_KERNEL_BOT, + .expected = 1, + .lam = LAM_U57_BITS, + .test_func = get_user_syscall, + .msg = "GET_USER:[Negative] get_user() with a kernel pointer and the bottom sign-extension bit cleared.\n", + }, + { + .later = GET_USER_KERNEL, + .expected = 1, + .lam = LAM_U57_BITS, + .test_func = get_user_syscall, + .msg = "GET_USER:[Negative] get_user() and pass a kernel pointer.\n", + }, }; static struct testcases mmap_cases[] = { -- 2.46.2

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[PATCH net-next] selftests: net/psock_lib: Handle EINTR and EAGAIN

by Leo Stone

Make pair_udp_send_char handle EAGAIN, EINTR, and partial reads or writes. Signed-off-by: Leo Stone <leocstone(a)gmail.com> --- tools/testing/selftests/net/psock_lib.h | 39 +++++++++++++++++++------ 1 file changed, 30 insertions(+), 9 deletions(-) diff --git a/tools/testing/selftests/net/psock_lib.h b/tools/testing/selftests/net/psock_lib.h index 6e4fef560873..e28bff95c8e2 100644 --- a/tools/testing/selftests/net/psock_lib.h +++ b/tools/testing/selftests/net/psock_lib.h @@ -13,6 +13,7 @@ #include <string.h> #include <arpa/inet.h> #include <unistd.h> +#include <stdbool.h> #include "kselftest.h" @@ -110,21 +111,41 @@ static __maybe_unused void pair_udp_open(int fds[], uint16_t port) } } +static void read_write_checked(int fd, char *buf, size_t sz, bool is_write) +{ + int bytes_processed = 0; + int ret; + + do { + if (is_write) + ret = write(fd, buf + bytes_processed, + sz - bytes_processed); + else + ret = read(fd, buf + bytes_processed, + sz - bytes_processed); + if (ret == -1) { + if (errno == EAGAIN || errno == EINTR) { + continue; + } else { + fprintf(stderr, "ERROR: %s failed, bytes left=%lu\n", + is_write ? "send" : "recv", + sz - bytes_processed); + exit(1); + } + } + bytes_processed += ret; + } while (bytes_processed < sz); +} + static __maybe_unused void pair_udp_send_char(int fds[], int num, char payload) { char buf[DATA_LEN], rbuf[DATA_LEN]; memset(buf, payload, sizeof(buf)); while (num--) { - /* Should really handle EINTR and EAGAIN */ - if (write(fds[0], buf, sizeof(buf)) != sizeof(buf)) { - fprintf(stderr, "ERROR: send failed left=%d\n", num); - exit(1); - } - if (read(fds[1], rbuf, sizeof(rbuf)) != sizeof(rbuf)) { - fprintf(stderr, "ERROR: recv failed left=%d\n", num); - exit(1); - } + read_write_checked(fds[0], buf, sizeof(buf), true); + read_write_checked(fds[1], rbuf, sizeof(rbuf), false); + if (memcmp(buf, rbuf, sizeof(buf))) { fprintf(stderr, "ERROR: data failed left=%d\n", num); exit(1); -- 2.39.5

1 year, 1 month

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[PATCH] kunit: tool: add ability to parse test metadata

by Rae Moar

Add ability for kunit parser to parse test metadata introduced in KTAPv2. Example of test metadata: KTAP version 2 #:ktap_test: test_name_example #:ktap_speed: slow #:ktap_test_file: /sys/kernel/... 1..1 ok 1 test Also add tests for this feature. Note this patch would no longer allow the case where the main test is missing a test plan and the subtest does not use a KTAP version line in the header. However, this is also not an accepted KTAP format. Example: KTAP version 2 // missing test plan // missing KTAP version line # Subtest: test_suite 1..1 ok 1 test ok 1 test_suite Signed-off-by: Rae Moar <rmoar(a)google.com> --- lib/kunit/attributes.c | 23 ++++-- lib/kunit/debugfs.c | 2 +- lib/kunit/test.c | 9 +-- tools/testing/kunit/kunit_parser.py | 79 +++++++++++++------ tools/testing/kunit/kunit_tool_test.py | 12 ++- .../test_is_test_passed-missing_plan.log | 2 + .../kunit/test_data/test_parse_attributes.log | 6 +- .../kunit/test_data/test_parse_metadata.log | 11 +++ 8 files changed, 106 insertions(+), 38 deletions(-) create mode 100644 tools/testing/kunit/test_data/test_parse_metadata.log diff --git a/lib/kunit/attributes.c b/lib/kunit/attributes.c index 2cf04cc09372..85db4555d332 100644 --- a/lib/kunit/attributes.c +++ b/lib/kunit/attributes.c @@ -286,11 +286,17 @@ void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level { int i; bool to_free = false; + bool printed = false; void *attr; const char *attr_name, *attr_str; struct kunit_suite *suite = is_test ? NULL : test_or_suite; struct kunit_case *test = is_test ? test_or_suite : NULL; + if (suite) { + kunit_log(KERN_INFO, suite, "%*s#:ktap_test: %s", + KUNIT_INDENT_LEN * test_level, "", suite->name); + } + for (i = 0; i < ARRAY_SIZE(kunit_attr_list); i++) { if (kunit_attr_list[i].print == PRINT_NEVER || (test && kunit_attr_list[i].print == PRINT_SUITE)) @@ -300,12 +306,19 @@ void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level attr_name = kunit_attr_list[i].name; attr_str = kunit_attr_list[i].to_string(attr, &to_free); if (test) { - kunit_log(KERN_INFO, test, "%*s# %s.%s: %s", - KUNIT_INDENT_LEN * test_level, "", test->name, - attr_name, attr_str); + if (!printed) { + kunit_log(KERN_INFO, test, "%*s#:ktap_test: %s", + KUNIT_INDENT_LEN * test_level, "", + test->name); + printed = true; + } + kunit_log(KERN_INFO, test, "%*s#:ktap_%s: %s", + KUNIT_INDENT_LEN * test_level, "", + attr_name, attr_str); } else { - kunit_log(KERN_INFO, suite, "%*s# %s: %s", - KUNIT_INDENT_LEN * test_level, "", attr_name, attr_str); + kunit_log(KERN_INFO, suite, "%*s#:ktap_%s: %s", + KUNIT_INDENT_LEN * test_level, "", + attr_name, attr_str); } /* Free to_string of attribute if needed */ diff --git a/lib/kunit/debugfs.c b/lib/kunit/debugfs.c index af71911f4a07..035cdae9d8b8 100644 --- a/lib/kunit/debugfs.c +++ b/lib/kunit/debugfs.c @@ -78,7 +78,7 @@ static int debugfs_print_results(struct seq_file *seq, void *v) /* Print suite header because it is not stored in the test logs. */ seq_puts(seq, KUNIT_SUBTEST_INDENT "KTAP version 1\n"); - seq_printf(seq, KUNIT_SUBTEST_INDENT "# Subtest: %s\n", suite->name); + seq_printf(seq, KUNIT_SUBTEST_INDENT "#:ktap_test: %s\n", suite->name); seq_printf(seq, KUNIT_SUBTEST_INDENT "1..%zd\n", kunit_suite_num_test_cases(suite)); kunit_suite_for_each_test_case(suite, test_case) diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 089c832e3cdb..4fcc39e87983 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -158,8 +158,6 @@ static void kunit_print_suite_start(struct kunit_suite *suite) * representation. */ pr_info(KUNIT_SUBTEST_INDENT "KTAP version 1\n"); - pr_info(KUNIT_SUBTEST_INDENT "# Subtest: %s\n", - suite->name); kunit_print_attr((void *)suite, false, KUNIT_LEVEL_CASE); pr_info(KUNIT_SUBTEST_INDENT "1..%zd\n", kunit_suite_num_test_cases(suite)); @@ -627,9 +625,11 @@ int kunit_run_tests(struct kunit_suite *suite) if (test_case->status == KUNIT_SKIPPED) { /* Test marked as skip */ test.status = KUNIT_SKIPPED; + kunit_print_attr((void *)test_case, true, KUNIT_LEVEL_CASE); kunit_update_stats(&param_stats, test.status); } else if (!test_case->generate_params) { /* Non-parameterised test. */ + kunit_print_attr((void *)test_case, true, KUNIT_LEVEL_CASE); test_case->status = KUNIT_SKIPPED; kunit_run_case_catch_errors(suite, test_case, &test); kunit_update_stats(&param_stats, test.status); @@ -641,7 +641,8 @@ int kunit_run_tests(struct kunit_suite *suite) kunit_log(KERN_INFO, &test, KUNIT_SUBTEST_INDENT KUNIT_SUBTEST_INDENT "KTAP version 1\n"); kunit_log(KERN_INFO, &test, KUNIT_SUBTEST_INDENT KUNIT_SUBTEST_INDENT - "# Subtest: %s", test_case->name); + "#:ktap_test: %s", test_case->name); + kunit_print_attr((void *)test_case, true, KUNIT_LEVEL_CASE); while (test.param_value) { kunit_run_case_catch_errors(suite, test_case, &test); @@ -669,8 +670,6 @@ int kunit_run_tests(struct kunit_suite *suite) } } - kunit_print_attr((void *)test_case, true, KUNIT_LEVEL_CASE); - kunit_print_test_stats(&test, param_stats); kunit_print_ok_not_ok(&test, KUNIT_LEVEL_CASE, test_case->status, diff --git a/tools/testing/kunit/kunit_parser.py b/tools/testing/kunit/kunit_parser.py index 29fc27e8949b..52dcbad52ade 100644 --- a/tools/testing/kunit/kunit_parser.py +++ b/tools/testing/kunit/kunit_parser.py @@ -247,7 +247,7 @@ def extract_tap_lines(kernel_output: Iterable[str]) -> LineStream: yield line_num, line return LineStream(lines=isolate_ktap_output(kernel_output)) -KTAP_VERSIONS = [1] +KTAP_VERSIONS = [1, 2] TAP_VERSIONS = [13, 14] def check_version(version_num: int, accepted_versions: List[int], @@ -324,6 +324,39 @@ def parse_test_header(lines: LineStream, test: Test) -> bool: lines.pop() return True +TEST_METADATA_HEADER = re.compile(r'^\s*#:ktap_test: (.*)$') +TEST_METADATA = re.compile(r'^\s*#:(ktap_.*): (.*)$') + +def parse_test_metadata(lines: LineStream, test: Test) -> bool: + """ + Parses test metadata and stores test information in test object. + Returns False if fails to parse test metadata lines + + Accepted format: + - '# [metadata_category]: [metadata]' + + Recognized metadata categories: + - 'ktap_test' to indicate test name + + Parameters: + lines - LineStream of KTAP output to parse + test - Test object for current test being parsed + + Return: + True if successfully parsed test metadata + """ + match = TEST_METADATA_HEADER.match(lines.peek()) + if not match: + return False + test.name = match.group(1) + test.log.append(lines.pop()) + non_metadata_lines = [TEST_PLAN, TEST_RESULT, KTAP_START] + while lines and not any(re.match(lines.peek()) + for re in non_metadata_lines): + # Add checks for metadata cateories here: Attributes, Files, Other... + test.log.append(lines.pop()) + return True + TEST_PLAN = re.compile(r'^\s*1\.\.([0-9]+)') def parse_test_plan(lines: LineStream, test: Test) -> bool: @@ -442,6 +475,7 @@ def parse_diagnostic(lines: LineStream) -> List[str]: Line formats that are not parsed: - '# Subtest: [test name]' + - '#:ktap_test: [test name]' - '[ok|not ok] [test number] [-] [test name] [optional skip directive]' - 'KTAP version [version number]' @@ -453,7 +487,8 @@ def parse_diagnostic(lines: LineStream) -> List[str]: Log of diagnostic lines """ log = [] # type: List[str] - non_diagnostic_lines = [TEST_RESULT, TEST_HEADER, KTAP_START, TAP_START, TEST_PLAN] + non_diagnostic_lines = [TEST_RESULT, TEST_HEADER, KTAP_START, TAP_START, + TEST_PLAN, TEST_METADATA_HEADER] while lines and not any(re.match(lines.peek()) for re in non_diagnostic_lines): log.append(lines.pop()) @@ -504,7 +539,7 @@ def print_test_header(test: Test, printer: Printer) -> None: message = test.name if message != "": # Add a leading space before the subtest counts only if a test name - # is provided using a "# Subtest" header line. + # is provided using a "#:ktap_test" or "# Subtest" header line. message += " " if test.expected_count: if test.expected_count == 1: @@ -702,6 +737,7 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: Example: KTAP version 1 + [test metadata] 1..4 [subtests] @@ -709,10 +745,11 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: "# Subtest" header line) Example (preferred format with both KTAP version line and - "# Subtest" line): + "#:ktap_test" line): KTAP version 1 - # Subtest: name + #:ktap_test: name + [test metadata] 1..3 [subtests] ok 1 name @@ -727,6 +764,7 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: Example (only KTAP version line, compliant with KTAP v1 spec): KTAP version 1 + [test metadata] 1..3 [subtests] ok 1 name @@ -755,26 +793,23 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest: err_log = parse_diagnostic(lines) test.log.extend(err_log) - if not 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, 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, printer) - subtest_line = parse_test_header(lines, test) + # If parsing the main/top-level test, parse KTAP version line, any + # test metadata, and test plan + ktap_line = parse_ktap_header(lines, test, printer) + subtest_line = parse_test_header(lines, test) + parse_test_metadata(lines, test) + parse_test_plan(lines, test) + + # Determine if the test is a parent test + if is_subtest: parent_test = (ktap_line or subtest_line) if parent_test: - # If KTAP version line and/or subtest header is found, attempt - # to parse test plan and print test header - test.log.extend(parse_diagnostic(lines)) - parse_test_plan(lines, test) print_test_header(test, printer) + else: + parent_test = True + if test.name == "": + test.name = "main" + expected_count = test.expected_count subtests = [] test_num = 1 diff --git a/tools/testing/kunit/kunit_tool_test.py b/tools/testing/kunit/kunit_tool_test.py index 0bcb0cc002f8..6ff422399130 100755 --- a/tools/testing/kunit/kunit_tool_test.py +++ b/tools/testing/kunit/kunit_tool_test.py @@ -345,8 +345,8 @@ class KUnitParserTest(unittest.TestCase): self.print_mock.assert_any_call(StrContains('suite (1 subtest)')) # Ensure attributes in correct test log - self.assertContains('# module: example', result.subtests[0].log) - self.assertContains('# test.speed: slow', result.subtests[0].subtests[0].log) + self.assertContains('#:ktap_module: example', result.subtests[0].log) + self.assertContains('#:ktap_speed: slow', result.subtests[0].subtests[0].log) def test_show_test_output_on_failure(self): output = """ @@ -363,6 +363,14 @@ class KUnitParserTest(unittest.TestCase): self.print_mock.assert_any_call(StrContains(' Indented more.')) self.noPrintCallContains('not ok 1 test1') + def test_metadata(self): + name_log = test_data_path('test_parse_metadata.log') + with open(name_log) as file: + result = kunit_parser.parse_run_tests(file.readlines(), stdout) + self.assertEqual(kunit_parser.TestStatus.SUCCESS, result.status) + self.assertEqual("main_test", result.name) + self.assertContains("#:ktap_speed: slow", result.subtests[0].log) + def line_stream_from_strs(strs: Iterable[str]) -> kunit_parser.LineStream: return kunit_parser.LineStream(enumerate(strs, start=1)) diff --git a/tools/testing/kunit/test_data/test_is_test_passed-missing_plan.log b/tools/testing/kunit/test_data/test_is_test_passed-missing_plan.log index 5cd17b7f818a..1e952b0430e1 100644 --- a/tools/testing/kunit/test_data/test_is_test_passed-missing_plan.log +++ b/tools/testing/kunit/test_data/test_is_test_passed-missing_plan.log @@ -1,4 +1,5 @@ KTAP version 1 + KTAP version 1 # Subtest: sysctl_test # sysctl_test_dointvec_null_tbl_data: sysctl_test_dointvec_null_tbl_data passed ok 1 - sysctl_test_dointvec_null_tbl_data @@ -18,6 +19,7 @@ KTAP version 1 ok 8 - sysctl_test_dointvec_single_greater_int_max kunit sysctl_test: all tests passed ok 1 - sysctl_test + KTAP version 1 # Subtest: example 1..2 init_suite diff --git a/tools/testing/kunit/test_data/test_parse_attributes.log b/tools/testing/kunit/test_data/test_parse_attributes.log index 1a13c371fe9d..d7961422c66f 100644 --- a/tools/testing/kunit/test_data/test_parse_attributes.log +++ b/tools/testing/kunit/test_data/test_parse_attributes.log @@ -1,9 +1,9 @@ KTAP version 1 1..1 KTAP version 1 - # Subtest: suite - # module: example + #:ktap_test: suite + #:ktap_module: example 1..1 - # test.speed: slow + #:ktap_speed: slow ok 1 test ok 1 suite \ No newline at end of file diff --git a/tools/testing/kunit/test_data/test_parse_metadata.log b/tools/testing/kunit/test_data/test_parse_metadata.log new file mode 100644 index 000000000000..2094867110e5 --- /dev/null +++ b/tools/testing/kunit/test_data/test_parse_metadata.log @@ -0,0 +1,11 @@ +KTAP version 2 +#:ktap_test: main_test +#:ktap_module: example +1..2 + KTAP version 2 + #:ktap_test: test_1 + #:ktap_speed: slow + 1..1 + ok 1 subtest_1 +ok 1 test_1 +ok 2 test_2 \ No newline at end of file base-commit: 62adcae479fe5bc04fa3b6c3f93bd340441f8b25 -- 2.47.0.338.g60cca15819-goog

1 year, 1 month

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[GIT PULL] Kselftest update for Linux 6.13-rc1

by Shuah Khan

Hi Linus, Please pull the following kselftest fixes update for Linux 6.13-rc1. kselftest update for Linux 6.13-rc1 -- timers test - removes duplicates defines -- timers test - fixes to improve error reporting -- rtc test - adds check rtc alarm status to alarm test -- resctrl test - adds array overrun checks during iMC config parsing code -- resctrl test - adds array overflow checks when reading strings -- resctrl test - fixes and reorganizing code Looks like I forgot to mention signal test changes in my tag message. :( diff is attached. Tests passed on my kselftest next branch: - Individual test runs of signal, timers, rtc, and resctrl thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 8e929cb546ee42c9a61d24fae60605e9e3192354: Linux 6.12-rc3 (2024-10-13 14:33:32 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-next-6.13-rc1 for you to fetch changes up to a44c26d7fa74a5f4d2795a5c55a2d6ec1ebf1e38: selftests/resctrl: Replace magic constants used as array size (2024-11-04 17:02:03 -0700) ---------------------------------------------------------------- linux_kselftest-next-6.13-rc1 kselftest update for Linux 6.13-rc1 -- timers test - removes duplicates defines -- timers test - fixes to improve error reporting -- rtc test - adds check rtc alarm status to alarm test -- resctrl test - adds array overrun checks during iMC config parsing code -- resctrl test - adds array overflow checks when reading strings -- resctrl test - fixes and reorganizing code ---------------------------------------------------------------- Chen Ni (1): selftests: timers: Remove unneeded semicolon Dev Jain (2): selftests: Rename sigaltstack to generic signal selftests: Add a test mangling with uc_sigmask Gianfranco Trad (1): selftests: timers: improve timer_create failure message Joseph Jang (1): selftest: rtc: Add to check rtc alarm status for alarm related test Nícolas F. R. A. Prado (1): docs: dev-tools: Add documentation for the device focused kselftests Reinette Chatre (15): selftests/resctrl: Make functions only used in same file static selftests/resctrl: Print accurate buffer size as part of MBM results selftests/resctrl: Fix memory overflow due to unhandled wraparound selftests/resctrl: Protect against array overrun during iMC config parsing selftests/resctrl: Protect against array overflow when reading strings selftests/resctrl: Make wraparound handling obvious selftests/resctrl: Remove "once" parameter required to be false selftests/resctrl: Only support measured read operation selftests/resctrl: Remove unused measurement code selftests/resctrl: Make benchmark parameter passing robust selftests/resctrl: Ensure measurements skip initialization of default benchmark selftests/resctrl: Use cache size to determine "fill_buf" buffer size selftests/resctrl: Do not compare performance counters and resctrl at low bandwidth selftests/resctrl: Keep results from first test run selftests/resctrl: Replace magic constants used as array size Shuah Khan (2): selftests: timers: Remove local NSEC_PER_SEC and USEC_PER_SEC defines selftests:timers: remove local CLOCKID defines Documentation/dev-tools/kselftest.rst | 9 + Documentation/dev-tools/testing-devices.rst | 47 +++ tools/testing/selftests/Makefile | 2 +- tools/testing/selftests/resctrl/cmt_test.c | 37 +- tools/testing/selftests/resctrl/fill_buf.c | 45 +-- tools/testing/selftests/resctrl/mba_test.c | 54 ++- tools/testing/selftests/resctrl/mbm_test.c | 37 +- tools/testing/selftests/resctrl/resctrl.h | 79 +++- tools/testing/selftests/resctrl/resctrl_tests.c | 95 ++++- tools/testing/selftests/resctrl/resctrl_val.c | 447 ++++++--------------- tools/testing/selftests/resctrl/resctrlfs.c | 19 +- tools/testing/selftests/rtc/Makefile | 2 +- tools/testing/selftests/rtc/rtctest.c | 64 +++ .../selftests/{sigaltstack => signal}/.gitignore | 1 + .../selftests/{sigaltstack => signal}/Makefile | 3 +- .../current_stack_pointer.h | 0 tools/testing/selftests/signal/mangle_uc_sigmask.c | 184 +++++++++ .../selftests/{sigaltstack => signal}/sas.c | 0 tools/testing/selftests/timers/Makefile | 2 +- tools/testing/selftests/timers/adjtick.c | 6 +- .../testing/selftests/timers/alarmtimer-suspend.c | 22 +- .../testing/selftests/timers/inconsistency-check.c | 21 +- tools/testing/selftests/timers/leap-a-day.c | 2 +- tools/testing/selftests/timers/mqueue-lat.c | 2 +- tools/testing/selftests/timers/nanosleep.c | 21 +- tools/testing/selftests/timers/nsleep-lat.c | 22 +- tools/testing/selftests/timers/posix_timers.c | 15 +- tools/testing/selftests/timers/raw_skew.c | 4 +- tools/testing/selftests/timers/set-2038.c | 3 +- tools/testing/selftests/timers/set-timer-lat.c | 21 +- tools/testing/selftests/timers/valid-adjtimex.c | 4 +- 31 files changed, 701 insertions(+), 569 deletions(-) create mode 100644 Documentation/dev-tools/testing-devices.rst rename tools/testing/selftests/{sigaltstack => signal}/.gitignore (70%) rename tools/testing/selftests/{sigaltstack => signal}/Makefile (56%) rename tools/testing/selftests/{sigaltstack => signal}/current_stack_pointer.h (100%) create mode 100644 tools/testing/selftests/signal/mangle_uc_sigmask.c rename tools/testing/selftests/{sigaltstack => signal}/sas.c (100%) ----------------------------------------------------------------

1 year, 1 month

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[RFCv1 0/6] Page Detective

by Pasha Tatashin

Page Detective is a new kernel debugging tool that provides detailed information about the usage and mapping of physical memory pages. It is often known that a particular page is corrupted, but it is hard to extract more information about such a page from live system. Examples are: - Checksum failure during live migration - Filesystem journal failure - dump_page warnings on the console log - Unexcpected segfaults Page Detective helps to extract more information from the kernel, so it can be used by developers to root cause the associated problem. It operates through the Linux debugfs interface, with two files: "virt" and "phys". The "virt" file takes a virtual address and PID and outputs information about the corresponding page. The "phys" file takes a physical address and outputs information about that page. The output is presented via kernel log messages (can be accessed with dmesg), and includes information such as the page's reference count, mapping, flags, and memory cgroup. It also shows whether the page is mapped in the kernel page table, and if so, how many times. Pasha Tatashin (6): mm: Make get_vma_name() function public pagewalk: Add a page table walker for init_mm page table mm: Add a dump_page variant that accept log level argument misc/page_detective: Introduce Page Detective misc/page_detective: enable loadable module selftests/page_detective: Introduce self tests for Page Detective Documentation/misc-devices/index.rst | 1 + Documentation/misc-devices/page_detective.rst | 78 ++ MAINTAINERS | 8 + drivers/misc/Kconfig | 11 + drivers/misc/Makefile | 1 + drivers/misc/page_detective.c | 808 ++++++++++++++++++ fs/inode.c | 18 +- fs/kernfs/dir.c | 1 + fs/proc/task_mmu.c | 61 -- include/linux/fs.h | 5 +- include/linux/mmdebug.h | 1 + include/linux/pagewalk.h | 2 + kernel/pid.c | 1 + mm/debug.c | 53 +- mm/memcontrol.c | 1 + mm/oom_kill.c | 1 + mm/pagewalk.c | 32 + mm/vma.c | 60 ++ tools/testing/selftests/Makefile | 1 + .../selftests/page_detective/.gitignore | 1 + .../testing/selftests/page_detective/Makefile | 7 + tools/testing/selftests/page_detective/config | 4 + .../page_detective/page_detective_test.c | 727 ++++++++++++++++ 23 files changed, 1787 insertions(+), 96 deletions(-) create mode 100644 Documentation/misc-devices/page_detective.rst create mode 100644 drivers/misc/page_detective.c create mode 100644 tools/testing/selftests/page_detective/.gitignore create mode 100644 tools/testing/selftests/page_detective/Makefile create mode 100644 tools/testing/selftests/page_detective/config create mode 100644 tools/testing/selftests/page_detective/page_detective_test.c -- 2.47.0.338.g60cca15819-goog

1 year, 1 month

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KUnit expectations in atomic context

by Brendan Jackman

Hi all, Another rather vague question from me - does anyone know any reasons why we couldn't support KUNIT_EXPECT in atomic contexts? For Address Space Isolation we have some tests that want to disable preemption. I guess this is not a totally insane thing to want to do - am I missing anything there? You can see some examples here: https://github.com/googleprodkernel/linux-kvm/blob/asi-lpc-24/arch/x86/mm/a… (Actually, looks like in that code we just started doing KUNIT_EXPECT in preempt-disabled regions anyway, and I never suffered any consequences until recently. Probably we just never had those assertions fail under DEBUG_ATOMIC_SLEEP). From a very quick look, it seems like the only reason you can't KUNIT_EXPECT from atomic right now is the GFP_KERNEL allocations. So... what if we just made them GFP_ATOMIC? In general I think that's a pretty ropey approach, but maybe fine in the context of unit tests? Or, we could have variants of the assertions, or a test attribute, to just use GFP_ATOMIC in the cases where it's needed. Is there anything else missing that would need to be done? Alternatively, we could expose the whole context concern to the user in such a way that KUNIT_ASSERT can be used too, something like: struct kunit_defer defer = KUNIT_INIT_DEFER(test); preempt_disable(); KUNIT_EXPECT_DEFERRED_TRUE(&defer, ...); KUNIT_ASSERT_DEFERRED_EQ(&defer, ...); preempt_enable(); // Prints failures from above, aborts if the ASSERT failed: kunit_defer_finish(&defer); I hope that wouldn't be necessary though, it seems like a lot of API surface.

1 year, 1 month

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[PATCH] selftests/mount_setattr: Fix failures on 64K PAGE_SIZE kernels

by Michael Ellerman

Currently the mount_setattr_test fails on machines with a 64K PAGE_SIZE, with errors such as: # RUN mount_setattr_idmapped.invalid_fd_negative ... mkfs.ext4: No space left on device while writing out and closing file system # mount_setattr_test.c:1055:invalid_fd_negative:Expected system("mkfs.ext4 -q /mnt/C/ext4.img") (256) == 0 (0) # invalid_fd_negative: Test terminated by assertion # FAIL mount_setattr_idmapped.invalid_fd_negative not ok 12 mount_setattr_idmapped.invalid_fd_negative The code creates a 100,000 byte tmpfs: ASSERT_EQ(mount("testing", "/mnt", "tmpfs", MS_NOATIME | MS_NODEV, "size=100000,mode=700"), 0); And then a little later creates a 2MB ext4 filesystem in that tmpfs: ASSERT_EQ(ftruncate(img_fd, 1024 * 2048), 0); ASSERT_EQ(system("mkfs.ext4 -q /mnt/C/ext4.img"), 0); At first glance it seems like that should never work, after all 2MB is larger than 100,000 bytes. However the filesystem image doesn't actually occupy 2MB on "disk" (actually RAM, due to tmpfs). On 4K kernels the ext4.img uses ~84KB of actual space (according to du), which just fits. However on 64K PAGE_SIZE kernels the ext4.img takes at least 256KB, which is too large to fit in the tmpfs, hence the errors. It seems fraught to rely on the ext4.img taking less space on disk than the allocated size, so instead create the tmpfs with a size of 2MB. With that all 21 tests pass on 64K PAGE_SIZE kernels. Fixes: 01eadc8dd96d ("tests: add mount_setattr() selftests") Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> --- tools/testing/selftests/mount_setattr/mount_setattr_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/mount_setattr/mount_setattr_test.c b/tools/testing/selftests/mount_setattr/mount_setattr_test.c index 68801e1a9ec2..70f65eb320a7 100644 --- a/tools/testing/selftests/mount_setattr/mount_setattr_test.c +++ b/tools/testing/selftests/mount_setattr/mount_setattr_test.c @@ -1026,7 +1026,7 @@ FIXTURE_SETUP(mount_setattr_idmapped) "size=100000,mode=700"), 0); ASSERT_EQ(mount("testing", "/mnt", "tmpfs", MS_NOATIME | MS_NODEV, - "size=100000,mode=700"), 0); + "size=2m,mode=700"), 0); ASSERT_EQ(mkdir("/mnt/A", 0777), 0); -- 2.47.0

1 year, 1 month

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[GIT PULL] KUnit update for Linux 6.13-rc1

by Shuah Khan

Hi Linus, Please pull the following kunit update for Linux 6.13-rc1. kunit update for Linux 6.13-rc1 -- fixes user-after-free (UAF) bug in kunit_init_suite() -- adds option to kunit tool to print just the summary of test results -- adds option to kunit tool to print just the failed test results -- fixes kunit_zalloc_skb() to use user passed in gfp value instead of hardcoding GFP_KERNEL -- fixes kunit_zalloc_skb() kernel doc to include allocation flags variable diff is attached. Tests passed on my kunit repo: - Build make allmodconfig ./tools/testing/kunit/kunit.py run ./tools/testing/kunit/kunit.py run --alltests ./tools/testing/kunit/kunit.py run --arch x86_64 ./tools/testing/kunit/kunit.py run --alltests --arch x86_64 thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 2d5404caa8c7bb5c4e0435f94b28834ae5456623: Linux 6.12-rc7 (2024-11-10 14:19:35 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux_kselftest-kunit-6.13-rc1 for you to fetch changes up to 67b6d342fb6d5abfbeb71e0f23141b9b96cf7bb1: kunit: tool: print failed tests only (2024-11-14 09:38:19 -0700) ---------------------------------------------------------------- linux_kselftest-kunit-6.13-rc1 kunit update for Linux 6.13-rc1 -- fixes user-after-free (UAF) bug in kunit_init_suite() -- adds option to kunit tool to print just the summary of test results -- adds option to kunit tool to print just the failed test results -- fixes kunit_zalloc_skb() to use user passed in gfp value instead of hardcoding GFP_KERNEL -- fixes kunit_zalloc_skb() kernel doc to include allocation flags variable ---------------------------------------------------------------- Dan Carpenter (2): kunit: skb: use "gfp" variable instead of hardcoding GFP_KERNEL kunit: skb: add gfp to kernel doc for kunit_zalloc_skb() David Gow (1): kunit: tool: Only print the summary Jinjie Ruan (1): kunit: string-stream: Fix a UAF bug in kunit_init_suite() Rae Moar (1): kunit: tool: print failed tests only include/kunit/skbuff.h | 5 +- lib/kunit/string-stream.c | 1 + tools/testing/kunit/kunit.py | 28 ++++++- tools/testing/kunit/kunit_parser.py | 134 +++++++++++++++++++++------------ tools/testing/kunit/kunit_printer.py | 14 +++- tools/testing/kunit/kunit_tool_test.py | 55 +++++++------- 6 files changed, 151 insertions(+), 86 deletions(-) ----------------------------------------------------------------

1 year, 1 month

2
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[PATCHv2 net-next] selftests: wireguards: use nft by default

by Hangbin Liu

Use nft by default if it's supported, as nft is the replacement for iptables, which is used by default in some releases. Additionally, iptables is dropped in some releases. Signed-off-by: Hangbin Liu <liuhangbin(a)gmail.com> --- v2: use one nft table for testing (Phil Sutter) --- tools/testing/selftests/wireguard/netns.sh | 63 ++++++++++++++++++---- 1 file changed, 53 insertions(+), 10 deletions(-) diff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh index 405ff262ca93..be4e3b13ed22 100755 --- a/tools/testing/selftests/wireguard/netns.sh +++ b/tools/testing/selftests/wireguard/netns.sh @@ -44,6 +44,7 @@ sleep() { read -t "$1" -N 1 || true; } waitiperf() { pretty "${1//*-}" "wait for iperf:${3:-5201} pid $2"; while [[ $(ss -N "$1" -tlpH "sport = ${3:-5201}") != *\"iperf3\",pid=$2,fd=* ]]; do sleep 0.1; done; } waitncatudp() { pretty "${1//*-}" "wait for udp:1111 pid $2"; while [[ $(ss -N "$1" -ulpH 'sport = 1111') != *\"ncat\",pid=$2,fd=* ]]; do sleep 0.1; done; } waitiface() { pretty "${1//*-}" "wait for $2 to come up"; ip netns exec "$1" bash -c "while [[ \$(< \"/sys/class/net/$2/operstate\") != up ]]; do read -t .1 -N 0 || true; done;"; } +use_nft() { nft --version &> /dev/null; } cleanup() { set +e @@ -75,6 +76,12 @@ pp ip netns add $netns1 pp ip netns add $netns2 ip0 link set up dev lo +if use_nft; then + n0 nft add table ip wgtest + n1 nft add table ip wgtest + n2 nft add table ip wgtest +fi + ip0 link add dev wg0 type wireguard ip0 link set wg0 netns $netns1 ip0 link add dev wg0 type wireguard @@ -196,13 +203,22 @@ ip1 link set wg0 mtu 1300 ip2 link set wg0 mtu 1300 n1 wg set wg0 peer "$pub2" endpoint 127.0.0.1:2 n2 wg set wg0 peer "$pub1" endpoint 127.0.0.1:1 -n0 iptables -A INPUT -m length --length 1360 -j DROP +if use_nft; then + n0 nft add chain ip wgtest INPUT { type filter hook input priority filter \; policy accept \; } + n0 nft add rule ip wgtest INPUT meta length 1360 counter drop +else + n0 iptables -A INPUT -m length --length 1360 -j DROP +fi n1 ip route add 192.168.241.2/32 dev wg0 mtu 1299 n2 ip route add 192.168.241.1/32 dev wg0 mtu 1299 n2 ping -c 1 -W 1 -s 1269 192.168.241.1 n2 ip route delete 192.168.241.1/32 dev wg0 mtu 1299 n1 ip route delete 192.168.241.2/32 dev wg0 mtu 1299 -n0 iptables -F INPUT +if use_nft; then + n0 nft flush table ip wgtest +else + n0 iptables -F INPUT +fi ip1 link set wg0 mtu $orig_mtu ip2 link set wg0 mtu $orig_mtu @@ -334,7 +350,12 @@ waitiface $netns2 veths n0 bash -c 'printf 1 > /proc/sys/net/ipv4/ip_forward' n0 bash -c 'printf 2 > /proc/sys/net/netfilter/nf_conntrack_udp_timeout' n0 bash -c 'printf 2 > /proc/sys/net/netfilter/nf_conntrack_udp_timeout_stream' -n0 iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -d 10.0.0.0/24 -j SNAT --to 10.0.0.1 +if use_nft; then + n0 nft add chain ip wgtest POSTROUTING { type nat hook postrouting priority srcnat\; policy accept \; } + n0 nft add rule ip wgtest POSTROUTING ip saddr 192.168.1.0/24 ip daddr 10.0.0.0/24 counter snat to 10.0.0.1 +else + n0 iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -d 10.0.0.0/24 -j SNAT --to 10.0.0.1 +fi n1 wg set wg0 peer "$pub2" endpoint 10.0.0.100:2 persistent-keepalive 1 n1 ping -W 1 -c 1 192.168.241.2 @@ -348,10 +369,19 @@ n1 wg set wg0 peer "$pub2" persistent-keepalive 0 # Test that sk_bound_dev_if works n1 ping -I wg0 -c 1 -W 1 192.168.241.2 # What about when the mark changes and the packet must be rerouted? -n1 iptables -t mangle -I OUTPUT -j MARK --set-xmark 1 +if use_nft; then + n1 nft add chain ip wgtest OUTPUT { type route hook output priority mangle\; policy accept \; } + n1 nft add rule ip wgtest OUTPUT counter meta mark set 0x1 +else + n1 iptables -t mangle -I OUTPUT -j MARK --set-xmark 1 +fi n1 ping -c 1 -W 1 192.168.241.2 # First the boring case n1 ping -I wg0 -c 1 -W 1 192.168.241.2 # Then the sk_bound_dev_if case -n1 iptables -t mangle -D OUTPUT -j MARK --set-xmark 1 +if use_nft; then + n1 nft flush table ip wgtest +else + n1 iptables -t mangle -D OUTPUT -j MARK --set-xmark 1 +fi # Test that onion routing works, even when it loops n1 wg set wg0 peer "$pub3" allowed-ips 192.168.242.2/32 endpoint 192.168.241.2:5 @@ -385,16 +415,29 @@ n1 ping -W 1 -c 100 -f 192.168.99.7 n1 ping -W 1 -c 100 -f abab::1111 # Have ns2 NAT into wg0 packets from ns0, but return an icmp error along the right route. -n2 iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -d 192.168.241.0/24 -j SNAT --to 192.168.241.2 -n0 iptables -t filter -A INPUT \! -s 10.0.0.0/24 -i vethrs -j DROP # Manual rpfilter just to be explicit. +if use_nft; then + n2 nft add chain ip wgtest POSTROUTING { type nat hook postrouting priority srcnat\; policy accept \; } + n2 nft add rule ip wgtest POSTROUTING ip saddr 10.0.0.0/24 ip daddr 192.168.241.0/24 counter snat to 192.168.241.2 + + n0 nft add chain ip wgtest INPUT { type filter hook input priority filter \; policy accept \; } + n0 nft add rule ip wgtest INPUT iifname "vethrs" ip saddr != 10.0.0.0/24 counter drop +else + n2 iptables -t nat -A POSTROUTING -s 10.0.0.0/24 -d 192.168.241.0/24 -j SNAT --to 192.168.241.2 + n0 iptables -t filter -A INPUT \! -s 10.0.0.0/24 -i vethrs -j DROP # Manual rpfilter just to be explicit. +fi n2 bash -c 'printf 1 > /proc/sys/net/ipv4/ip_forward' ip0 -4 route add 192.168.241.1 via 10.0.0.100 n2 wg set wg0 peer "$pub1" remove [[ $(! n0 ping -W 1 -c 1 192.168.241.1 || false) == *"From 10.0.0.100 icmp_seq=1 Destination Host Unreachable"* ]] -n0 iptables -t nat -F -n0 iptables -t filter -F -n2 iptables -t nat -F +if use_nft; then + n0 nft flush table ip wgtest + n2 nft flush table ip wgtest +else + n0 iptables -t nat -F + n0 iptables -t filter -F + n2 iptables -t nat -F +fi ip0 link del vethrc ip0 link del vethrs ip1 link del wg0 -- 2.39.5 (Apple Git-154)

1 year, 1 month

3
4
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[PATCH net-next v2] mm: page_frag: fix a compile error when kernel is not compiled

by Yunsheng Lin

page_frag test module is an out of tree module, but built using KDIR as the main kernel tree, the mm test suite is just getting skipped if newly added page_frag test module fails to compile due to kernel not yet compiled. Fix the above problem by ensuring both kernel is built first and a newer kernel which has page_frag_cache.h is used. CC: Andrew Morton <akpm(a)linux-foundation.org> CC: Alexander Duyck <alexanderduyck(a)fb.com> CC: Linux-MM <linux-mm(a)kvack.org> Fixes: 7fef0dec415c ("mm: page_frag: add a test module for page_frag") Fixes: 65941f10caf2 ("mm: move the page fragment allocator from page_alloc into its own file") Reported-by: Mark Brown <broonie(a)kernel.org> Signed-off-by: Yunsheng Lin <linyunsheng(a)huawei.com> Tested-by: Mark Brown <broonie(a)kernel.org> --- V2: Repost by adding net-next ML. Note, page_frag test module is only in the net-next tree for now, so target the net-next tree. --- tools/testing/selftests/mm/Makefile | 18 ++++++++++++++++++ tools/testing/selftests/mm/page_frag/Makefile | 2 +- 2 files changed, 19 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile index acec529baaca..04e04733fc8a 100644 --- a/tools/testing/selftests/mm/Makefile +++ b/tools/testing/selftests/mm/Makefile @@ -36,7 +36,16 @@ MAKEFLAGS += --no-builtin-rules CFLAGS = -Wall -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES) $(TOOLS_INCLUDES) LDLIBS = -lrt -lpthread -lm +KDIR ?= /lib/modules/$(shell uname -r)/build +ifneq (,$(wildcard $(KDIR)/Module.symvers)) +ifneq (,$(wildcard $(KDIR)/include/linux/page_frag_cache.h)) TEST_GEN_MODS_DIR := page_frag +else +PAGE_FRAG_WARNING = "missing page_frag_cache.h, please use a newer kernel" +endif +else +PAGE_FRAG_WARNING = "missing Module.symvers, please have the kernel built first" +endif TEST_GEN_FILES = cow TEST_GEN_FILES += compaction_test @@ -214,3 +223,12 @@ warn_missing_liburing: echo "Warning: missing liburing support. Some tests will be skipped." ; \ echo endif + +ifneq ($(PAGE_FRAG_WARNING),) +all: warn_missing_page_frag + +warn_missing_page_frag: + @echo ; \ + echo "Warning: $(PAGE_FRAG_WARNING). page_frag test will be skipped." ; \ + echo +endif diff --git a/tools/testing/selftests/mm/page_frag/Makefile b/tools/testing/selftests/mm/page_frag/Makefile index 58dda74d50a3..8c8bb39ffa28 100644 --- a/tools/testing/selftests/mm/page_frag/Makefile +++ b/tools/testing/selftests/mm/page_frag/Makefile @@ -1,5 +1,5 @@ PAGE_FRAG_TEST_DIR := $(realpath $(dir $(abspath $(lastword $(MAKEFILE_LIST))))) -KDIR ?= $(abspath $(PAGE_FRAG_TEST_DIR)/../../../../..) +KDIR ?= /lib/modules/$(shell uname -r)/build ifeq ($(V),1) Q = -- 2.33.0

1 year, 1 month

3
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[PATCH v2] net/unix: pass pidfd flags via SCM_PIDFD cmsg

by Stas Sergeev

Currently SCM_PIDFD cmsg cannot be sent via unix socket (returns -EINVAL) and SO_PASSPIDFD doesn't support flags. The created pidfd always has flags set to 0. This patch implements SCM_PIDFD cmsg in AF_UNIX socket, which can be used to send flags to SO_PASSPIDFD-enabled recipient. Self-test is added for the propagation of PIDFD_NONBLOCK flag. This is mainly needed for the future extensions, like eg this one: https://lore.kernel.org/lkml/8288a08e-448b-43c2-82dc-59f87d0d9072@yandex.ru… where it was suggested to try solving the supplementary groups problem with pidfd. Changes in v2: remove flags validation in scm_pidfd_recv(), as suggested by Kuniyuki Iwashima <kuniyu(a)amazon.com> Signed-off-by: Stas Sergeev <stsp2(a)yandex.ru> CC: "David S. Miller" <davem(a)davemloft.net> CC: Eric Dumazet <edumazet(a)google.com> CC: Jakub Kicinski <kuba(a)kernel.org> CC: Paolo Abeni <pabeni(a)redhat.com> CC: Simon Horman <horms(a)kernel.org> CC: Shuah Khan <shuah(a)kernel.org> CC: Christian Brauner <brauner(a)kernel.org> CC: Jens Axboe <axboe(a)kernel.dk> CC: Willem de Bruijn <willemb(a)google.com> CC: Pavel Begunkov <asml.silence(a)gmail.com> CC: Gabriel Krisman Bertazi <krisman(a)suse.de> CC: Mina Almasry <almasrymina(a)google.com> CC: Oleg Nesterov <oleg(a)redhat.com> CC: Tycho Andersen <tandersen(a)netflix.com> CC: Al Viro <viro(a)zeniv.linux.org.uk> CC: Kuniyuki Iwashima <kuniyu(a)amazon.com> CC: Gou Hao <gouhao(a)uniontech.com> CC: Abhishek Chauhan <quic_abchauha(a)quicinc.com> CC: Michal Luczaj <mhal(a)rbox.co> CC: Kees Cook <kees(a)kernel.org> CC: Aleksa Sarai <cyphar(a)cyphar.com> CC: linux-kernel(a)vger.kernel.org CC: netdev(a)vger.kernel.org CC: linux-kselftest(a)vger.kernel.org --- include/linux/pidfs.h | 9 +++ include/linux/socket.h | 2 +- include/net/af_unix.h | 1 + include/net/scm.h | 3 +- kernel/pid.c | 6 +- net/core/scm.c | 14 ++++ net/core/sock.c | 1 + net/unix/af_unix.c | 3 + .../testing/selftests/net/af_unix/scm_pidfd.c | 70 +++++++++++++++++-- 9 files changed, 99 insertions(+), 10 deletions(-) diff --git a/include/linux/pidfs.h b/include/linux/pidfs.h index 75bdf9807802..c4c5c1a0c2ad 100644 --- a/include/linux/pidfs.h +++ b/include/linux/pidfs.h @@ -2,7 +2,16 @@ #ifndef _LINUX_PID_FS_H #define _LINUX_PID_FS_H +#include <uapi/linux/pidfd.h> + struct file *pidfs_alloc_file(struct pid *pid, unsigned int flags); void __init pidfs_init(void); +static inline int pidfd_validate_flags(unsigned int flags) +{ + if (flags & ~(PIDFD_NONBLOCK | PIDFD_THREAD)) + return -EINVAL; + return 0; +} + #endif /* _LINUX_PID_FS_H */ diff --git a/include/linux/socket.h b/include/linux/socket.h index d18cc47e89bd..ee27d391e5aa 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -178,7 +178,7 @@ static inline size_t msg_data_left(struct msghdr *msg) #define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */ #define SCM_CREDENTIALS 0x02 /* rw: struct ucred */ #define SCM_SECURITY 0x03 /* rw: security label */ -#define SCM_PIDFD 0x04 /* ro: pidfd (int) */ +#define SCM_PIDFD 0x04 /* r: pidfd, w: pidfd_flags (int) */ struct ucred { __u32 pid; diff --git a/include/net/af_unix.h b/include/net/af_unix.h index 63129c79b8cb..4bc197548c2f 100644 --- a/include/net/af_unix.h +++ b/include/net/af_unix.h @@ -62,6 +62,7 @@ struct unix_skb_parms { #ifdef CONFIG_SECURITY_NETWORK u32 secid; /* Security ID */ #endif + u32 pidfd_flags; u32 consumed; } __randomize_layout; diff --git a/include/net/scm.h b/include/net/scm.h index 0d35c7c77a74..1326edcacacb 100644 --- a/include/net/scm.h +++ b/include/net/scm.h @@ -48,6 +48,7 @@ struct scm_cookie { #ifdef CONFIG_SECURITY_NETWORK u32 secid; /* Passed security ID */ #endif + u32 pidfd_flags; }; void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm); @@ -154,7 +155,7 @@ static __inline__ void scm_pidfd_recv(struct msghdr *msg, struct scm_cookie *scm if (!scm->pid) return; - pidfd = pidfd_prepare(scm->pid, 0, &pidfd_file); + pidfd = pidfd_prepare(scm->pid, scm->pidfd_flags, &pidfd_file); if (put_cmsg(msg, SOL_SOCKET, SCM_PIDFD, sizeof(int), &pidfd)) { if (pidfd_file) { diff --git a/kernel/pid.c b/kernel/pid.c index 2715afb77eab..b1100ae8ea63 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -629,10 +629,12 @@ static int pidfd_create(struct pid *pid, unsigned int flags) SYSCALL_DEFINE2(pidfd_open, pid_t, pid, unsigned int, flags) { int fd; + int err; struct pid *p; - if (flags & ~(PIDFD_NONBLOCK | PIDFD_THREAD)) - return -EINVAL; + err = pidfd_validate_flags(flags); + if (err) + return err; if (pid <= 0) return -EINVAL; diff --git a/net/core/scm.c b/net/core/scm.c index 4f6a14babe5a..3bcdecdacd7e 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -23,6 +23,7 @@ #include <linux/security.h> #include <linux/pid_namespace.h> #include <linux/pid.h> +#include <linux/pidfs.h> #include <linux/nsproxy.h> #include <linux/slab.h> #include <linux/errqueue.h> @@ -210,6 +211,19 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p) p->creds.gid = gid; break; } + case SCM_PIDFD: + { + unsigned int flags; + + if (cmsg->cmsg_len != CMSG_LEN(sizeof(flags))) + goto error; + memcpy(&flags, CMSG_DATA(cmsg), sizeof(flags)); + err = pidfd_validate_flags(flags); + if (err) + goto error; + p->pidfd_flags = flags; + break; + } default: goto error; } diff --git a/net/core/sock.c b/net/core/sock.c index 039be95c40cf..d1fce437c035 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -2930,6 +2930,7 @@ int __sock_cmsg_send(struct sock *sk, struct cmsghdr *cmsg, /* SCM_RIGHTS and SCM_CREDENTIALS are semantically in SOL_UNIX. */ case SCM_RIGHTS: case SCM_CREDENTIALS: + case SCM_PIDFD: break; default: return -EINVAL; diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 001ccc55ef0f..8b19dfec0221 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1892,6 +1892,7 @@ static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool sen UNIXCB(skb).uid = scm->creds.uid; UNIXCB(skb).gid = scm->creds.gid; UNIXCB(skb).fp = NULL; + UNIXCB(skb).pidfd_flags = scm->pidfd_flags; unix_get_secdata(scm, skb); if (scm->fp && send_fds) err = unix_attach_fds(scm, skb); @@ -2486,6 +2487,7 @@ int __unix_dgram_recvmsg(struct sock *sk, struct msghdr *msg, size_t size, memset(&scm, 0, sizeof(scm)); scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid); + scm.pidfd_flags = UNIXCB(skb).pidfd_flags; unix_set_secdata(&scm, skb); if (!(flags & MSG_PEEK)) { @@ -2873,6 +2875,7 @@ static int unix_stream_read_generic(struct unix_stream_read_state *state, test_bit(SOCK_PASSPIDFD, &sock->flags)) { /* Copy credentials */ scm_set_cred(&scm, UNIXCB(skb).pid, UNIXCB(skb).uid, UNIXCB(skb).gid); + scm.pidfd_flags = UNIXCB(skb).pidfd_flags; unix_set_secdata(&scm, skb); check_creds = true; } diff --git a/tools/testing/selftests/net/af_unix/scm_pidfd.c b/tools/testing/selftests/net/af_unix/scm_pidfd.c index 7e534594167e..1e70ff253a1d 100644 --- a/tools/testing/selftests/net/af_unix/scm_pidfd.c +++ b/tools/testing/selftests/net/af_unix/scm_pidfd.c @@ -5,6 +5,7 @@ #include <stddef.h> #include <stdio.h> #include <stdlib.h> +#include <fcntl.h> #include <sys/socket.h> #include <linux/socket.h> #include <unistd.h> @@ -15,6 +16,11 @@ #include <sys/types.h> #include <sys/wait.h> +/* There are problems including linux/pidfd.h, so define. */ +#ifndef PIDFD_NONBLOCK +#define PIDFD_NONBLOCK O_NONBLOCK +#endif + #include "../../kselftest_harness.h" #define clean_errno() (errno == 0 ? "None" : strerror(errno)) @@ -126,7 +132,7 @@ static pid_t get_pid_from_fdinfo_file(int pidfd, const char *key, size_t keylen) return result; } -static int cmsg_check(int fd) +static int cmsg_check(int fd, unsigned int pidfd_flags) { struct msghdr msg = { 0 }; struct cmsghdr *cmsg; @@ -136,6 +142,7 @@ static int cmsg_check(int fd) char control[CMSG_SPACE(sizeof(struct ucred)) + CMSG_SPACE(sizeof(int))] = { 0 }; int *pidfd = NULL; + unsigned int flags; pid_t parent_pid; int err; @@ -197,6 +204,13 @@ static int cmsg_check(int fd) return 1; } + flags = fcntl(*pidfd, F_GETFL, 0); + flags &= ~O_ACCMODE; + if (flags != pidfd_flags) { + log_err("SCM_PIDFD flags mismatch: %x != %x", flags, pidfd_flags); + return 1; + } + /* pidfd from SCM_PIDFD should point to the parent process PID */ parent_pid = get_pid_from_fdinfo_file(*pidfd, "Pid:", sizeof("Pid:") - 1); @@ -227,30 +241,49 @@ FIXTURE_VARIANT(scm_pidfd) { int type; bool abstract; + unsigned int flags; }; FIXTURE_VARIANT_ADD(scm_pidfd, stream_pathname) { .type = SOCK_STREAM, .abstract = 0, + .flags = 0, }; FIXTURE_VARIANT_ADD(scm_pidfd, stream_abstract) { .type = SOCK_STREAM, .abstract = 1, + .flags = 0, }; FIXTURE_VARIANT_ADD(scm_pidfd, dgram_pathname) { .type = SOCK_DGRAM, .abstract = 0, + .flags = 0, }; FIXTURE_VARIANT_ADD(scm_pidfd, dgram_abstract) { .type = SOCK_DGRAM, .abstract = 1, + .flags = 0, +}; + +FIXTURE_VARIANT_ADD(scm_pidfd, stream_nonblock) +{ + .type = SOCK_STREAM, + .abstract = 0, + .flags = PIDFD_NONBLOCK, +}; + +FIXTURE_VARIANT_ADD(scm_pidfd, dgram_nonblock) +{ + .type = SOCK_DGRAM, + .abstract = 0, + .flags = PIDFD_NONBLOCK, }; FIXTURE_SETUP(scm_pidfd) @@ -335,7 +368,7 @@ static void client(FIXTURE_DATA(scm_pidfd) *self, close(self->startup_pipe[1]); - if (cmsg_check(cfd)) { + if (cmsg_check(cfd, variant->flags)) { log_err("cmsg_check failed"); child_die(); } @@ -375,6 +408,27 @@ TEST_F(scm_pidfd, test) int err; int pfd; int child_status = 0; + char iobuf; + unsigned int pidfd_flags; + struct msghdr msg = { 0 }; + struct cmsghdr *cmsg; + struct iovec io = { + .iov_base = &iobuf, + .iov_len = sizeof(iobuf) + }; + union { + char buf[CMSG_SPACE(sizeof(pidfd_flags))]; + struct cmsghdr align; + } u; + + msg.msg_iov = &io; + msg.msg_iovlen = 1; + msg.msg_control = u.buf; + msg.msg_controllen = sizeof(u.buf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_PIDFD; + cmsg->cmsg_len = CMSG_LEN(sizeof(pidfd_flags)); self->server = socket(AF_UNIX, variant->type, 0); ASSERT_NE(-1, self->server); @@ -414,12 +468,16 @@ TEST_F(scm_pidfd, test) close(self->startup_pipe[0]); if (variant->type == SOCK_DGRAM) { - err = sendto(pfd, "x", sizeof(char), 0, (struct sockaddr *)&self->client_addr->listen_addr, self->client_addr->addrlen); - ASSERT_NE(-1, err); - } else { - err = send(pfd, "x", sizeof(char), 0); + err = connect(pfd, + (struct sockaddr *)&self->client_addr->listen_addr, + self->client_addr->addrlen); ASSERT_NE(-1, err); } + iobuf = 'x'; + pidfd_flags = variant->flags; + memcpy(CMSG_DATA(cmsg), &pidfd_flags, sizeof(pidfd_flags)); + err = sendmsg(pfd, &msg, 0); + ASSERT_NE(-1, err); close(pfd); waitpid(self->client_pid, &child_status, 0); -- 2.47.0

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