August 2023 - Linux-kselftest-mirror

[PATCH] selftests: prctl: Add prctl test for PR_GET_NAME

by Osama Muhammad

This patch covers the testing of PR_GET_NAME by reading it's value from proc/self/task/pid/comm and matching it by the value returned by PR_GET_NAME. Signed-off-by: Osama Muhammad <osmtendev(a)gmail.com> --- .../selftests/prctl/set-process-name.c | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/tools/testing/selftests/prctl/set-process-name.c b/tools/testing/selftests/prctl/set-process-name.c index 3bc5e0e09..41f4b105d 100644 --- a/tools/testing/selftests/prctl/set-process-name.c +++ b/tools/testing/selftests/prctl/set-process-name.c @@ -47,6 +47,28 @@ int check_null_pointer(char *check_name) return res; } +int check_name(void) +{ + + int pid; + + pid = getpid(); + FILE *fptr; + char path[50] = {}; + int j; + + j = snprintf(path, 50, "/proc/self/task/%d/comm", pid); + fptr = fopen(path, "r"); + char name[TASK_COMM_LEN] = {}; + int res = prctl(PR_GET_NAME, name, NULL, NULL, NULL); + char output[TASK_COMM_LEN] = {}; + + fscanf(fptr, "%s", output); + + return !strcmp(output, name); + +} + TEST(rename_process) { EXPECT_GE(set_name(CHANGE_NAME), 0); @@ -57,6 +79,9 @@ TEST(rename_process) { EXPECT_GE(set_name(CHANGE_NAME), 0); EXPECT_LT(check_null_pointer(CHANGE_NAME), 0); + + EXPECT_TRUE(check_name()); + } TEST_HARNESS_MAIN -- 2.34.1

1 year, 4 months

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[PATCH v3 00/14] tools/nolibc: enable compiler warnings

by Thomas Weißschuh

To help the developers to avoid mistakes and keep the code smaller let's enable compiler warnings. I stuck with __attribute__((unused)) over __maybe_unused in nolibc-test.c for consistency with nolibc proper. If we want to add a define it needs to be added twice once for nolibc proper and once for nolibc-test otherwise libc-test wouldn't build anymore. Signed-off-by: Thomas Weißschuh <linux(a)weissschuh.net> --- Changes in v3: - Make getpagesize() return "int" - Simplify validation of read() return value - Don't make functions static that are to be used as breakpoints - Drop -s from LDFLAGS - Use proper types for read()/write() return values - Fix unused parameter warnings in new setvbuf() - Link to v2: https://lore.kernel.org/r/20230801-nolibc-warnings-v2-0-1ba5ca57bd9b@weisss… Changes in v2: - Don't drop unused test helpers, mark them as __attribute__((unused)) - Make some function in nolibc-test static - Also handle -W and -Wextra - Link to v1: https://lore.kernel.org/r/20230731-nolibc-warnings-v1-0-74973d2a52d7@weisss… --- Thomas Weißschuh (14): tools/nolibc: drop unused variables tools/nolibc: fix return type of getpagesize() tools/nolibc: setvbuf: avoid unused parameter warnings tools/nolibc: sys: avoid implicit sign cast tools/nolibc: stdint: use int for size_t on 32bit selftests/nolibc: drop unused variables selftests/nolibc: mark test helpers as potentially unused selftests/nolibc: make functions static if possible selftests/nolibc: avoid unused parameter warnings selftests/nolibc: avoid sign-compare warnings selftests/nolibc: use correct return type for read() and write() selftests/nolibc: prevent out of bounds access in expect_vfprintf selftests/nolibc: don't strip nolibc-test selftests/nolibc: enable compiler warnings tools/include/nolibc/stdint.h | 4 + tools/include/nolibc/stdio.h | 5 +- tools/include/nolibc/sys.h | 7 +- tools/testing/selftests/nolibc/Makefile | 4 +- tools/testing/selftests/nolibc/nolibc-test.c | 111 ++++++++++++++++----------- 5 files changed, 80 insertions(+), 51 deletions(-) --- base-commit: bc87f9562af7b2b4cb07dcaceccfafcf05edaff8 change-id: 20230731-nolibc-warnings-c6e47284ac03 Best regards, -- Thomas Weißschuh <linux(a)weissschuh.net>

1 year, 4 months

2
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[PATCH v2 0/2] tracing: Fix cpu buffers unavailable problem and add its testcase

by Zheng Yejian

Hi, This is the v2 to fix cpu buffers unavailable problem after some operations on file 'tracing_cpumask' and 'snapshot', also upload its testcase. Changes show as below. v2: - Fix compile issue reported-by kernel test robot <lkp(a)intel.com> with suggestion from Steve: - Link: https://lore.kernel.org/all/202308050731.PQutr3r0-lkp@intel.com/ - Link: https://lore.kernel.org/all/20230804125107.41d6cdb1@gandalf.local.home/ - Add a step to set tracing_on in testcase (see patch 2) and add descriptions of each step. v1: - Link: https://lore.kernel.org/all/20230804124549.2562977-1-zhengyejian1@huawei.co… Zheng Yejian (2): tracing: Fix cpu buffers unavailable due to 'record_disabled' messed selftests/ftrace: Add a basic testcase for snapshot kernel/trace/trace.c | 6 ++++ .../ftrace/test.d/00basic/snapshot1.tc | 31 +++++++++++++++++++ 2 files changed, 37 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc -- 2.25.1

1 year, 4 months

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[PATCH 0/2] tracing: Fix cpu buffers unavailable problem and add its testcase

by Zheng Yejian

Hi, steve, after some operations on file 'tracing_cpumask' and 'snapshot', trace ring buffer can no longer record anything. This series contain a patch to fix it and a constrived testcase to reproduce it. I think the reproduction testcase is useful to help others to check if their version has this problem and verify the bugfix. However, currently in "tools/testing/selftests/ftrace/test.d", there seems no appropriate subdirectory to put this kind reproductions. So I now put the testcase in "00basic" because it is basicly simple. Or would there be a new directory to collect simple reproduction testcases? Zheng Yejian (2): tracing: Fix cpu buffers unavailable due to 'record_disabled' messed selftests/ftrace: Add a basic testcase for snapshot kernel/trace/trace.c | 2 ++ .../ftrace/test.d/00basic/snapshot1.tc | 17 +++++++++++++++++ 2 files changed, 19 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc -- 2.25.1

1 year, 4 months

3
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[PATCH net 0/4] mptcp: more fixes for v6.5

by Matthieu Baerts

Here is a new batch of fixes related to MPTCP for v6.5 and older. Patches 1 and 2 fix issues with MPTCP Join selftest when manually launched with '-i' parameter to use 'ip mptcp' tool instead of the dedicated one (pm_nl_ctl). The issues have been there since v5.18. Thank you Andrea for your first contributions to MPTCP code in the upstream kernel! Patch 3 avoids corrupting the data stream when trying to reset connections that have fallen back to TCP. This can happen from v6.1. Patch 4 fixes a race when doing a disconnect() and an accept() in parallel on a listener socket. The issue only happens in rare cases if the user is really unlucky since a fix that landed in v6.3 but backported up to v6.1. Signed-off-by: Matthieu Baerts <matthieu.baerts(a)tessares.net> --- Andrea Claudi (2): selftests: mptcp: join: fix 'delete and re-add' test selftests: mptcp: join: fix 'implicit EP' test Paolo Abeni (2): mptcp: avoid bogus reset on fallback close mptcp: fix disconnect vs accept race net/mptcp/protocol.c | 2 +- net/mptcp/protocol.h | 1 - net/mptcp/subflow.c | 60 ++++++++++++------------- tools/testing/selftests/net/mptcp/mptcp_join.sh | 6 ++- 4 files changed, 35 insertions(+), 34 deletions(-) --- base-commit: 0f71c9caf26726efea674646f566984e735cc3b9 change-id: 20230803-upstream-net-20230803-misc-fixes-6-5-6046c6ca74b6 Best regards, -- Matthieu Baerts <matthieu.baerts(a)tessares.net>

1 year, 4 months

2
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[PATCH v4 0/3] kunit: Expose some built-in features to modules

by Janusz Krzysztofik

Submit the top-level headers also from the kunit test module notifier initialization callback, so external tools that are parsing dmesg for kunit test output are able to tell how many test suites should be expected and whether to continue parsing after complete output from the first test suite is collected. Extend kunit module notifier initialization callback with a processing path for only listing the tests provided by a module if the kunit action parameter is set to "list", so external tools can obtain a list of test cases to be executed in advance and can make a better job on assigning kernel messages interleaved with kunit output to specific tests. Use test filtering functions in kunit module notifier callback functions, so external tools are able to execute individual test cases from kunit test modules in order to still better isolate their potential impact on kernel messages that appear interleaved with output from other tests. v4: Use kunit_exec_run_tests() (Mauro, Rae), but prevent it from emitting the headers when called on load of non-test modules, - don't use a different list format, use kunit_exec_list_tests() (Rae), - refresh on top of newly introduced attributes patches, handle newly introduced kunit.action=list_attr case (Rae). v3: Fix CONFIG_GLOB, required by filtering functions, not selected when building as a module. v2: Fix new name of a structure moved to kunit namespace not updated across all uses. Janusz Krzysztofik (3): kunit: Report the count of test suites in a module kunit: Make 'list' action available to kunit test modules kunit: Allow kunit test modules to use test filtering include/kunit/test.h | 21 ++++++++ lib/kunit/Kconfig | 2 +- lib/kunit/executor.c | 115 +++++++++++++++++++++++++------------------ lib/kunit/test.c | 40 ++++++++++++++- 4 files changed, 128 insertions(+), 50 deletions(-) base-commit: 5a175d369c702ce08c9feb630125c9fc7a9e1370 -- 2.41.0

1 year, 4 months

2
4
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[PATCH] selftests/rseq: Fix build with undefined __weak

by Mark Brown

Commit 3bcbc20942db ("selftests/rseq: Play nice with binaries statically linked against glibc 2.35+") which is now in Linus' tree introduced uses of __weak but did nothing to ensure that a definition is provided for it resulting in build failures for the rseq tests: rseq.c:41:1: error: unknown type name '__weak' __weak ptrdiff_t __rseq_offset; ^ rseq.c:41:17: error: expected ';' after top level declarator __weak ptrdiff_t __rseq_offset; ^ ; rseq.c:42:1: error: unknown type name '__weak' __weak unsigned int __rseq_size; ^ rseq.c:43:1: error: unknown type name '__weak' __weak unsigned int __rseq_flags; Fix this by using the definition from tools/include compiler.h. Fixes: 3bcbc20942db ("selftests/rseq: Play nice with binaries statically linked against glibc 2.35+") Signed-off-by: Mark Brown <broonie(a)kernel.org> --- It'd be good if the KVM testing could include builds of the rseq selftests, the KVM tests pull in code from rseq but not the build system which has resulted in multiple failures like this. --- tools/testing/selftests/rseq/Makefile | 4 +++- tools/testing/selftests/rseq/rseq.c | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile index b357ba24af06..7a957c7d459a 100644 --- a/tools/testing/selftests/rseq/Makefile +++ b/tools/testing/selftests/rseq/Makefile @@ -4,8 +4,10 @@ ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) CLANG_FLAGS += -no-integrated-as endif +top_srcdir = ../../../.. + CFLAGS += -O2 -Wall -g -I./ $(KHDR_INCLUDES) -L$(OUTPUT) -Wl,-rpath=./ \ - $(CLANG_FLAGS) + $(CLANG_FLAGS) -I$(top_srcdir)/tools/include LDLIBS += -lpthread -ldl # Own dependencies because we only want to build against 1st prerequisite, but diff --git a/tools/testing/selftests/rseq/rseq.c b/tools/testing/selftests/rseq/rseq.c index a723da253244..96e812bdf8a4 100644 --- a/tools/testing/selftests/rseq/rseq.c +++ b/tools/testing/selftests/rseq/rseq.c @@ -31,6 +31,8 @@ #include <sys/auxv.h> #include <linux/auxvec.h> +#include <linux/compiler.h> + #include "../kselftest.h" #include "rseq.h" --- base-commit: 5d0c230f1de8c7515b6567d9afba1f196fb4e2f4 change-id: 20230804-kselftest-rseq-build-9d537942b1de Best regards, -- Mark Brown <broonie(a)kernel.org>

1 year, 4 months

2
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[PATCH v3] selftests: cgroup: fix test_kmem_basic less than error

by Lucas Karpinski

test_kmem_basic creates 100,000 negative dentries, with each one mapping to a slab object. After memory.high is set, these are reclaimed through the shrink_slab function call which reclaims all 100,000 entries. The test passes the majority of the time because when slab1 or current is calculated, it is often above 0, however, 0 is also an acceptable value. Signed-off-by: Lucas Karpinski <lkarpins(a)redhat.com> --- In the previous patch, I missed a change to the variable 'current' even after some testing as the issue was so sporadic. Current takes the slab size into account and can also face the same issue where it fails since the reported value is 0, which is an acceptable value. Drop: b4abfc19 in mm-unstable V2: https://lore.kernel.org/all/ix6vzgjqay2x7bskle7pypoint4nj66fwq7odvd5hektatv… tools/testing/selftests/cgroup/test_kmem.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/cgroup/test_kmem.c b/tools/testing/selftests/cgroup/test_kmem.c index 1b2cec9d18a4..ed2e50bb1e76 100644 --- a/tools/testing/selftests/cgroup/test_kmem.c +++ b/tools/testing/selftests/cgroup/test_kmem.c @@ -75,11 +75,11 @@ static int test_kmem_basic(const char *root) sleep(1); slab1 = cg_read_key_long(cg, "memory.stat", "slab "); - if (slab1 <= 0) + if (slab1 < 0) goto cleanup; current = cg_read_long(cg, "memory.current"); - if (current <= 0) + if (current < 0) goto cleanup; if (slab1 < slab0 / 2 && current < slab0 / 2) -- 2.41.0

1 year, 4 months

1
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[PATCH v1 0/3] selftests/nolibc: add misc improvments

by Zhangjin Wu

Hi, Willy Here is last 3 patches for v6.6 from me. It includes two generic patches from the tinyconfig part1 series and one static related patch derived from Thomas' series. Best regards, Zhangjin Zhangjin Wu (3): selftests/nolibc: allow report with existing test log selftests/nolibc: fix up O= option support tools/nolibc: stackprotector.h: make __stack_chk_init static tools/include/nolibc/crt.h | 2 +- tools/include/nolibc/stackprotector.h | 5 ++--- tools/testing/selftests/nolibc/Makefile | 11 +++++++++-- 3 files changed, 12 insertions(+), 6 deletions(-) -- 2.25.1

1 year, 4 months

3
16
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[PATCH v2] kselftest/arm64: add RCpc load-acquire to hwcap test

by Zeng Heng

Add the RCpc and various features check in the set of hwcap tests. Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- v1 -> v2: - sort features by name tools/testing/selftests/arm64/abi/hwcap.c | 26 +++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index d4ad813fed10..6a0adf916028 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -39,6 +39,18 @@ static void cssc_sigill(void) asm volatile(".inst 0xdac01c00" : : : "x0"); } +static void ilrcpc_sigill(void) +{ + /* LDAPUR W0, [SP, #8] */ + asm volatile(".inst 0x994083e0" : : : ); +} + +static void lrcpc_sigill(void) +{ + /* LDAPR W0, [SP, #0] */ + asm volatile(".inst 0xb8bfc3e0" : : : ); +} + static void mops_sigill(void) { char dst[1], src[1]; @@ -223,6 +235,20 @@ static const struct hwcap_data { .cpuinfo = "cssc", .sigill_fn = cssc_sigill, }, + { + .name = "LRCPC", + .at_hwcap = AT_HWCAP, + .hwcap_bit = HWCAP_LRCPC, + .cpuinfo = "lrcpc", + .sigill_fn = lrcpc_sigill, + }, + { + .name = "LRCPC2", + .at_hwcap = AT_HWCAP, + .hwcap_bit = HWCAP_ILRCPC, + .cpuinfo = "ilrcpc", + .sigill_fn = ilrcpc_sigill, + }, { .name = "MOPS", .at_hwcap = AT_HWCAP2, -- 2.25.1

1 year, 4 months

3
2
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Linux-kselftest-mirror August 2023