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

preemptirq_delay_test module can trigger crash on arm64 vm

by Xiao Yang

Hi Steve, Joel Sorry to bother you. On my slow arm64 vm, inserting and removing preemptirq_delay_test module in loops triggers kernel panic sometimes. Reproduce steps: Do the following steps in loops(more than 10 times): [root@CentOS81-aarch64 ]# modprobe preemptirq_delay_test test_mode=preempt delay=500000; rmmod preemptirq_delay_test Call Trace: ------------------------------------------------------------------- [172413.750294] Unable to handle kernel paging request at virtual address fffffe0009010280 [172413.790511] Mem abort info: [172413.791129] ESR = 0x86000007 [172413.791656] EC = 0x21: IABT (current EL), IL = 32 bits [172413.792322] SET = 0, FnV = 0 [172413.792793] EA = 0, S1PTW = 0 [172413.794082] swapper pgtable: 64k pages, 42-bit VAs, pgdp=0000000040ef0000 [172413.794556] [fffffe0009010280] pgd=00000000bfff0003, pud=00000000bfff0003, pmd=00000000bfff0003, pte=0000000000000000 [172413.795690] Internal error: Oops: 86000007 [#1] PREEMPT SMP [172413.796285] Modules linked in: sunrpc vfat fat ext4 mbcache jbd2 crct10dif_ce ghash_ce sha2_ce sha256_arm64 sha1_ce ip_tables xfs libcrc32c virtio_net net_failover failover virtio_blk virtio_mmio [last unloaded: preemptirq_delay_test] [172413.797797] CPU: 1 PID: 15750 Comm: preempt_test Not tainted 5.6.0-rc7 #17 [172413.798275] Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015 [172413.799049] pstate: 40000005 (nZcv daif -PAN -UAO) [172413.799934] pc : 0xfffffe0009010280 [172413.800230] lr : 0xfffffe0009010280 [172413.800497] sp : fffffe001390fe00 [172413.800799] x29: fffffe001390fe00 x28: 0000000000000000 [172413.801263] x27: 0000000000000000 x26: fffffe0009010000 [172413.801726] x25: 0000000000000000 x24: fffffe00114a3670 [172413.802164] x23: fffffe0010d1d150 x22: fffffe0016b2f9e8 [172413.802635] x21: 0000000000000000 x20: fffffe0009030008 [172413.803191] x19: fffffe0009030000 x18: 0000000000000000 [172413.803672] x17: 0000000000000000 x16: 0000000000000000 [172413.804118] x15: 0000000000000000 x14: 0000000000000000 [172413.804558] x13: 0000000000000000 x12: 0000000000000000 [172413.805013] x11: 0000000000000000 x10: 0000000000000d50 [172413.805441] x9 : fffffe001390fd10 x8 : fffffc00762930b0 [172413.805944] x7 : 00000000fa83b2da x6 : 0000000000000000 [172413.806455] x5 : fffffe001127c000 x4 : fffffe006ed00000 [172413.806874] x3 : fffffe001127cf50 x2 : 0000000000000002 [172413.807312] x1 : 0000000000000000 x0 : 0000000000000228 [172413.807869] Call trace: [172413.808146] 0xfffffe0009010280 [172413.808436] 0xfffffe0009010294 [172413.808723] 0xfffffe0009010050 [172413.809519] kthread+0x110/0x118 [172413.809734] ret_from_fork+0x10/0x18 [172413.810338] Code: bad PC value [172413.811203] ---[ end trace 69c688402fdc8bb1 ]--- [172413.811670] Kernel panic - not syncing: Fatal exception [172413.812108] SMP: stopping secondary CPUs [172413.812733] Kernel Offset: disabled [172413.813043] CPU features: 0x10002,20006082 [172413.813387] Memory Limit: none [172413.813849] ---[ end Kernel panic - not syncing: Fatal exception]--- ------------------------------------------------------------------- Do you have any suggestion about the issue. Thanks, Xiao Yang

5 years, 2 months

3
2
0 0

[PATCH] selftests: add build/cross-build dependency check script

by Shuah Khan

Add build/cross-build dependency check script kselftest_deps.sh This script does the following: Usage: ./kselftest_deps.sh -[p] <compiler> [test_name] kselftest_deps.sh [-p] gcc kselftest_deps.sh [-p] gcc vm kselftest_deps.sh [-p] aarch64-linux-gnu-gcc kselftest_deps.sh [-p] aarch64-linux-gnu-gcc vm - Should be run in selftests directory in the kernel repo. - Checks if Kselftests can be built/cross-built on a system. - Parses all test/sub-test Makefile to find library dependencies. - Runs compile test on a trivial C file with LDLIBS specified in the test Makefiles to identify missing library dependencies. - Prints suggested target list for a system filtering out tests failed the build dependency check from the TARGETS in Selftests the main Makefile when optional -p is specified. - Prints pass/fail dependency check for each tests/sub-test. - Prints pass/fail targets and libraries. - Default: runs dependency checks on all tests. - Optional test name can be specified to check dependencies for it. To make LDLIBS parsing easier - change gpio and memfd Makefiles to use the same temporary variable used to find and add libraries to LDLIBS. - simlify LDLIBS append logic in intel_pstate/Makefile. Results from run on x86_64 system (trimmed detailed pass/fail list): ======================================================== Kselftest Dependency Check for [./kselftest_deps.sh gcc ] results... ======================================================== Checked tests defining LDLIBS dependencies -------------------------------------------------------- Total tests with Dependencies: 55 Pass: 53 Fail: 2 -------------------------------------------------------- Targets passed build dependency check on system: bpf capabilities filesystems futex gpio intel_pstate membarrier memfd mqueue net powerpc ptp rseq rtc safesetid timens timers vDSO vm -------------------------------------------------------- FAIL: netfilter/Makefile dependency check: -lmnl FAIL: gpio/Makefile dependency check: -lmount -------------------------------------------------------- Targets failed build dependency check on system: gpio netfilter -------------------------------------------------------- Missing libraries system -lmnl -lmount -------------------------------------------------------- ======================================================== Results from run on x86_64 system with aarch64-linux-gnu-gcc: (trimmed detailed pass/fail list): ======================================================== Kselftest Dependency Check for [./kselftest_deps.sh aarch64-linux-gnu-gcc ] results... ======================================================== Checked tests defining LDLIBS dependencies -------------------------------------------------------- Total tests with Dependencies: 55 Pass: 41 Fail: 14 -------------------------------------------------------- Targets failed build dependency check on system: bpf capabilities filesystems futex gpio intel_pstate membarrier memfd mqueue net powerpc ptp rseq rtc timens timers vDSO vm -------------------------------------------------------- -------------------------------------------------------- Targets failed build dependency check on system: bpf capabilities gpio memfd mqueue net netfilter safesetid vm -------------------------------------------------------- Missing libraries system -lcap -lcap-ng -lelf -lfuse -lmnl -lmount -lnuma -lpopt -lz -------------------------------------------------------- ======================================================== Signed-off-by: Shuah Khan <skhan(a)linuxfoundation.org> --- tools/testing/selftests/gpio/Makefile | 12 +- tools/testing/selftests/intel_pstate/Makefile | 2 +- tools/testing/selftests/kselftest_deps.sh | 272 ++++++++++++++++++ tools/testing/selftests/memfd/Makefile | 14 +- 4 files changed, 291 insertions(+), 9 deletions(-) create mode 100755 tools/testing/selftests/kselftest_deps.sh diff --git a/tools/testing/selftests/gpio/Makefile b/tools/testing/selftests/gpio/Makefile index 0bb80619db58..32bdc978a711 100644 --- a/tools/testing/selftests/gpio/Makefile +++ b/tools/testing/selftests/gpio/Makefile @@ -1,13 +1,13 @@ # SPDX-License-Identifier: GPL-2.0 -MOUNT_CFLAGS := $(shell pkg-config --cflags mount 2>/dev/null) -MOUNT_LDLIBS := $(shell pkg-config --libs mount 2>/dev/null) -ifeq ($(MOUNT_LDLIBS),) -MOUNT_LDLIBS := -lmount -I/usr/include/libmount +VAR_CFLAGS := $(shell pkg-config --cflags mount 2>/dev/null) +VAR_LDLIBS := $(shell pkg-config --libs mount 2>/dev/null) +ifeq ($(VAR_LDLIBS),) +VAR_LDLIBS := -lmount -I/usr/include/libmount endif -CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/ $(MOUNT_CFLAGS) -LDLIBS += $(MOUNT_LDLIBS) +CFLAGS += -O2 -g -std=gnu99 -Wall -I../../../../usr/include/ $(VAR_CFLAGS) +LDLIBS += $(VAR_LDLIBS) TEST_PROGS := gpio-mockup.sh TEST_FILES := gpio-mockup-sysfs.sh diff --git a/tools/testing/selftests/intel_pstate/Makefile b/tools/testing/selftests/intel_pstate/Makefile index 7340fd6a9a9f..39f0fa2a8fd6 100644 --- a/tools/testing/selftests/intel_pstate/Makefile +++ b/tools/testing/selftests/intel_pstate/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 CFLAGS := $(CFLAGS) -Wall -D_GNU_SOURCE -LDLIBS := $(LDLIBS) -lm +LDLIBS += -lm uname_M := $(shell uname -m 2>/dev/null || echo not) ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/) diff --git a/tools/testing/selftests/kselftest_deps.sh b/tools/testing/selftests/kselftest_deps.sh new file mode 100755 index 000000000000..bb9c22e7af0e --- /dev/null +++ b/tools/testing/selftests/kselftest_deps.sh @@ -0,0 +1,272 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# kselftest_deps.sh +# +# Checks for kselftest build dependencies on the build system. +# Copyright (c) 2020 Shuah Khan <skhan(a)linuxfoundation.org> +# +# + +usage() +{ + +echo -e "Usage: $0 -[p] <compiler> [test_name]\n" +echo -e "\tkselftest_deps.sh [-p] gcc" +echo -e "\tkselftest_deps.sh [-p] gcc vm" +echo -e "\tkselftest_deps.sh [-p] aarch64-linux-gnu-gcc" +echo -e "\tkselftest_deps.sh [-p] aarch64-linux-gnu-gcc vm\n" +echo "- Should be run in selftests directory in the kernel repo." +echo "- Checks if Kselftests can be built/cross-built on a system." +echo "- Parses all test/sub-test Makefile to find library dependencies." +echo "- Runs compile test on a trivial C file with LDLIBS specified" +echo " in the test Makefiles to identify missing library dependencies." +echo "- Prints suggested target list for a system filtering out tests" +echo " failed the build dependency check from the TARGETS in Selftests" +echo " main Makefile when optional -p is specified." +echo "- Prints pass/fail dependency check for each tests/sub-test." +echo "- Prints pass/fail targets and libraries." +echo "- Default: runs dependency checks on all tests." +echo "- Optional test name can be specified to check dependencies for it." +exit 1 + +} + +# Start main() +main() +{ + +base_dir=`pwd` +# Make sure we're in the selftests top-level directory. +if [ $(basename "$base_dir") != "selftests" ]; then + echo -e "\tPlease run $0 in" + echo -e "\ttools/testing/selftests directory ..." + exit 1 +fi + +print_targets=0 + +while getopts "p" arg; do + case $arg in + p) + print_targets=1 + shift;; + esac +done + +if [ $# -eq 0 ] +then + usage +fi + +# Compiler +CC=$1 + +tmp_file=$(mktemp).c +trap "rm -f $tmp_file.o $tmp_file $tmp_file.bin" EXIT +#echo $tmp_file + +pass=$(mktemp).out +trap "rm -f $pass" EXIT +#echo $pass + +fail=$(mktemp).out +trap "rm -f $fail" EXIT +#echo $fail + +# Generate tmp source fire for compile test +cat << "EOF" > $tmp_file +int main() +{ +} +EOF + +# Save results +total_cnt=0 +fail_trgts=() +fail_libs=() +fail_cnt=0 +pass_trgts=() +pass_libs=() +pass_cnt=0 + +# Get all TARGETS from selftests Makefile +targets=$(egrep "^TARGETS +|^TARGETS =" Makefile | cut -d "=" -f2) + +# Single test case +if [ $# -eq 2 ] +then + test=$2/Makefile + + l1_test $test + l2_test $test + l3_test $test + + print_results $1 $2 + exit $? +fi + +# Level 1: LDLIBS set static. +# +# Find all LDLIBS set statically for all executables built by a Makefile +# and filter out VAR_LDLIBS to discard the following: +# gpio/Makefile:LDLIBS += $(VAR_LDLIBS) +# Append space at the end of the list to append more tests. + +l1_tests=$(grep -r --include=Makefile "^LDLIBS" | \ + grep -v "VAR_LDLIBS" | awk -F: '{print $1}') + +# Level 2: LDLIBS set dynamically. +# +# Level 2 +# Some tests have multiple valid LDLIBS lines for individual sub-tests +# that need dependency checks. Find them and append them to the tests +# e.g: vm/Makefile:$(OUTPUT)/userfaultfd: LDLIBS += -lpthread +# Filter out VAR_LDLIBS to discard the following: +# memfd/Makefile:$(OUTPUT)/fuse_mnt: LDLIBS += $(VAR_LDLIBS) +# Append space at the end of the list to append more tests. + +l2_tests=$(grep -r --include=Makefile ": LDLIBS" | \ + grep -v "VAR_LDLIBS" | awk -F: '{print $1}') + +# Level 3 +# gpio, memfd and others use pkg-config to find mount and fuse libs +# respectively and save it in VAR_LDLIBS. If pkg-config doesn't find +# any, VAR_LDLIBS set to default. +# Use the default value and filter out pkg-config for dependency check. +# e.g: +# gpio/Makefile +# VAR_LDLIBS := $(shell pkg-config --libs mount) 2>/dev/null) +# memfd/Makefile +# VAR_LDLIBS := $(shell pkg-config fuse --libs 2>/dev/null) + +l3_tests=$(grep -r --include=Makefile "^VAR_LDLIBS" | \ + grep -v "pkg-config" | awk -F: '{print $1}') + +#echo $l1_tests +#echo $l2_1_tests +#echo $l3_tests + +all_tests +print_results $1 $2 + +exit $? +} +# end main() + +all_tests() +{ + for test in $l1_tests; do + l1_test $test + done + + for test in $l2_tests; do + l2_test $test + done + + for test in $l3_tests; do + l3_test $test + done +} + +# Use same parsing used for l1_tests and pick libraries this time. +l1_test() +{ + test_libs=$(grep --include=Makefile "^LDLIBS" $test | \ + grep -v "VAR_LDLIBS" | \ + sed -e 's/\:/ /' | \ + sed -e 's/+/ /' | cut -d "=" -f 2) + + check_libs $test $test_libs +} + +# Use same parsing used for l2__tests and pick libraries this time. +l2_test() +{ + test_libs=$(grep --include=Makefile ": LDLIBS" $test | \ + grep -v "VAR_LDLIBS" | \ + sed -e 's/\:/ /' | sed -e 's/+/ /' | \ + cut -d "=" -f 2) + + check_libs $test $test_libs +} + +l3_test() +{ + test_libs=$(grep --include=Makefile "^VAR_LDLIBS" $test | \ + grep -v "pkg-config" | sed -e 's/\:/ /' | + sed -e 's/+/ /' | cut -d "=" -f 2) + + check_libs $test $test_libs +} + +check_libs() +{ + +if [[ ! -z "${test_libs// }" ]] +then + + #echo $test_libs + + for lib in $test_libs; do + + let total_cnt+=1 + $CC -o $tmp_file.bin $lib $tmp_file > /dev/null 2>&1 + if [ $? -ne 0 ]; then + echo "FAIL: $test dependency check: $lib" >> $fail + let fail_cnt+=1 + fail_libs+="$lib " + fail_target=$(echo "$test" | cut -d "/" -f1) + fail_trgts+="$fail_target " + targets=$(echo "$targets" | grep -v "$fail_target") + else + echo "PASS: $test dependency check passed $lib" >> $pass + let pass_cnt+=1 + pass_libs+="$lib " + pass_trgts+="$(echo "$test" | cut -d "/" -f1) " + fi + + done +fi +} + +print_results() +{ + echo -e "========================================================"; + echo -e "Kselftest Dependency Check for [$0 $1 $2] results..." + + if [ $print_targets -ne 0 ] + then + echo -e "Suggested Selftest Targets for your configuration:" + echo -e "$targets"; + fi + + echo -e "========================================================"; + echo -e "Checked tests defining LDLIBS dependencies" + echo -e "--------------------------------------------------------"; + echo -e "Total tests with Dependencies:" + echo -e "$total_cnt Pass: $pass_cnt Fail: $fail_cnt"; + + if [ $pass_cnt -ne 0 ]; then + echo -e "--------------------------------------------------------"; + cat $pass + echo -e "--------------------------------------------------------"; + echo -e "Targets passed build dependency check on system:" + echo -e "$(echo "$pass_trgts" | xargs -n1 | sort -u | xargs)" + fi + + if [ $fail_cnt -ne 0 ]; then + echo -e "--------------------------------------------------------"; + cat $fail + echo -e "--------------------------------------------------------"; + echo -e "Targets failed build dependency check on system:" + echo -e "$(echo "$fail_trgts" | xargs -n1 | sort -u | xargs)" + echo -e "--------------------------------------------------------"; + echo -e "Missing libraries system" + echo -e "$(echo "$fail_libs" | xargs -n1 | sort -u | xargs)" + fi + + echo -e "--------------------------------------------------------"; + echo -e "========================================================"; +} + +main "$@" diff --git a/tools/testing/selftests/memfd/Makefile b/tools/testing/selftests/memfd/Makefile index 187b14cad00c..4da8b565fa32 100644 --- a/tools/testing/selftests/memfd/Makefile +++ b/tools/testing/selftests/memfd/Makefile @@ -8,11 +8,21 @@ TEST_GEN_PROGS := memfd_test TEST_PROGS := run_fuse_test.sh run_hugetlbfs_test.sh TEST_GEN_FILES := fuse_test fuse_mnt -fuse_mnt.o: CFLAGS += $(shell pkg-config fuse --cflags) +VAR_CFLAGS := $(shell pkg-config fuse --cflags 2>/dev/null) +ifeq ($(VAR_CFLAGS),) +VAR_CFLAGS := -D_FILE_OFFSET_BITS=64 -I/usr/include/fuse +endif + +VAR_LDLIBS := $(shell pkg-config fuse --libs 2>/dev/null) +ifeq ($(VAR_LDLIBS),) +VAR_LDLIBS := -lfuse -pthread +endif + +fuse_mnt.o: CFLAGS += $(VAR_CFLAGS) include ../lib.mk -$(OUTPUT)/fuse_mnt: LDLIBS += $(shell pkg-config fuse --libs) +$(OUTPUT)/fuse_mnt: LDLIBS += $(VAR_LDLIBS) $(OUTPUT)/memfd_test: memfd_test.c common.c $(OUTPUT)/fuse_test: fuse_test.c common.c -- 2.20.1

5 years, 2 months

3
4
0 0

[PATCH] selftests/ftrace: Check the first record for kprobe_args_type.tc

by Xiao Yang

It is possible to get multiple records from trace during test and then more than 4 arguments are assigned to ARGS. This situation results in the failure of kprobe_args_type.tc. For example: ----------------------------------------------------------- grep testprobe trace ftracetest-5902 [001] d... 111195.682227: testprobe: (_do_fork+0x0/0x460) arg1=334823024 arg2=334823024 arg3=0x13f4fe70 arg4=7 pmlogger-5949 [000] d... 111195.709898: testprobe: (_do_fork+0x0/0x460) arg1=345308784 arg2=345308784 arg3=0x1494fe70 arg4=7 grep testprobe trace sed -e 's/.* arg1=$.*$ arg2=$.*$ arg3=$.*$ arg4=$.*$/\1 \2 \3 \4/' ARGS='334823024 334823024 0x13f4fe70 7 345308784 345308784 0x1494fe70 7' ----------------------------------------------------------- We don't care which process calls do_fork so just check the first record to fix the issue. Signed-off-by: Xiao Yang <yangx.jy(a)cn.fujitsu.com> --- .../testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc index 1bcb67dcae26..81490ecaaa92 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc @@ -38,7 +38,7 @@ for width in 64 32 16 8; do echo 0 > events/kprobes/testprobe/enable : "Confirm the arguments is recorded in given types correctly" - ARGS=`grep "testprobe" trace | sed -e 's/.* arg1=$.*$ arg2=$.*$ arg3=$.*$ arg4=$.*$/\1 \2 \3 \4/'` + ARGS=`grep "testprobe" trace | head -n 1 | sed -e 's/.* arg1=$.*$ arg2=$.*$ arg3=$.*$ arg4=$.*$/\1 \2 \3 \4/'` check_types $ARGS $width : "Clear event for next loop" -- 2.25.1

5 years, 2 months

4
7
0 0

Re: [PATCH v6 0/5] KUnit-KASAN Integration

by David Gow

On Sat, Apr 18, 2020 at 11:28 PM Alan Maguire <alan.maguire(a)oracle.com> wrote: > > > On Fri, 17 Apr 2020, David Gow wrote: > > > This patchset contains everything needed to integrate KASAN and KUnit. > > > > KUnit will be able to: > > (1) Fail tests when an unexpected KASAN error occurs > > (2) Pass tests when an expected KASAN error occurs > > > > Convert KASAN tests to KUnit with the exception of copy_user_test > > because KUnit is unable to test those. > > > > I tried building and running and things look good but I am > still seeing the three failures I reported before, even with > CONFIG_AMD_MEM_ENCRYPT not set. My config is attached if you > want to try and reproduce at your end. Oddly this config was > working before IIRC (once CONFIG_AMD_MEM_ENCRYPT was not set). > > Here's the failures: > > # kasan_memchr: EXPECTATION FAILED at lib/test_kasan.c:545 > Expected fail_data.report_expected == fail_data.report_found, but > fail_data.report_expected == 1 > fail_data.report_found == 0 > not ok 31 - kasan_memchr > # kasan_memcmp: EXPECTATION FAILED at lib/test_kasan.c:566 > Expected fail_data.report_expected == fail_data.report_found, but > fail_data.report_expected == 1 > fail_data.report_found == 0 > not ok 32 - kasan_memcmp I was able to reproduce these (along with a kasan_strings) failure, and the cause seems to be some combination of __builtin functions being inlined by the compiler and potentially dead code elimination, as fixed by Daniel Axtens here: https://lkml.org/lkml/2020/4/23/708 I've sent out v7 of the patchset[1], which I've rebased on top of Daniel's patches, and can no longer reproduce those test failures with your .config. Cheers, -- David [1]: https://lkml.org/lkml/2020/4/24/80

5 years, 2 months

1
0
0 0

[PATCH] kunit: Add missing newline in summary message

by Marco Elver

Add missing newline, as otherwise flushing of the final summary message to the console log can be delayed. Fixes: e2219db280e3 ("kunit: add debugfs /sys/kernel/debug/kunit/<suite>/results display") Signed-off-by: Marco Elver <elver(a)google.com> --- lib/kunit/test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 7a6430a7fca0..ccb2ffad8dcf 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -93,7 +93,7 @@ static void kunit_print_ok_not_ok(void *test_or_suite, * representation. */ if (suite) - pr_info("%s %zd - %s", + pr_info("%s %zd - %s\n", kunit_status_to_string(is_ok), test_number, description); else -- 2.26.1.301.g55bc3eb7cb9-goog

5 years, 2 months

5
6
0 0

bpf: test_progs run failed on debian 9

by Ma Xinjian

Hi Andrii. sorry to bother you again. I run bpf: test_progs on debian 9, and failed with"Segmentation fault". CONFIG_DEBUG_INFO_BTF was enabled in kconfig. Testing env: "Debian GNU/Linux 9 (stretch)" kernel: v5.7-rc2 v5.6 both failed Whole run log and kconfig please see the attatchment. Error info ``` root@vm-snb-42 /usr/src/perf_selftests-x86_64-rhel-7.6-kselftests-ae83d0b416db002fe95601e7f97f64b59514d936/tools/testing/selftests/bpf# ./test_progs #1 attach_probe:OK #2 bpf_obj_id:OK #3/1 dctcp:OK [snip] libbpf: bpf_fentry_test1 is not found in vmlinux BTF libbpf: failed to load object 'fentry_test' libbpf: failed to load BPF skeleton 'fentry_test': -2 test_fentry_fexit:FAIL:fentry_skel_load fentry skeleton failed #13 fentry_fexit:FAIL libbpf: bpf_fentry_test1 is not found in vmlinux BTF libbpf: failed to load object 'fentry_test' libbpf: failed to load BPF skeleton 'fentry_test': -2 test_fentry_test:FAIL:fentry_skel_load fentry skeleton failed #14 fentry_test:FAIL #15 fexit_bpf2bpf:OK libbpf: bpf_fentry_test1 is not found in vmlinux BTF test_fexit_stress:FAIL:find_vmlinux_btf_id failed: -2 #16 fexit_stress:FAIL libbpf: bpf_fentry_test1 is not found in vmlinux BTF libbpf: failed to load object 'fexit_test' libbpf: failed to load BPF skeleton 'fexit_test': -2 test_fexit_test:FAIL:fexit_skel_load fexit skeleton failed #17 fexit_test:FAIL #18 flow_dissector:OK #19 flow_dissector_load_bytes:OK #20 flow_dissector_reattach:OK #21 get_stack_raw_tp:OK #22 global_data:OK #23 global_data_init:OK test_kfree_skb:PASS:prog_load sched cls 0 nsec libbpf: eth_type_trans is not found in vmlinux BTF libbpf: failed to load object './kfree_skb.o' test_kfree_skb:FAIL:prog_load raw tp err -22 errno 1 #24 kfree_skb:FAIL #25 l4lb_all:OK #26/1 pin_raw_tp:OK #26/2 pin_tp_btf:OK #26 link_pinning:OK #27 map_lock:OK Segmentation fault ``` -- Best Regards. Ma Xinjian

5 years, 2 months

1
0
0 0

bpf: test_btf run failed on debian9

by Ma Xinjian

Hi Andrii. I noticed you add tools/testing/selftests/bpf/progs/test_btf_*, so drop this problem to you. I failed to run bpf: test_btf on debian9(stretch), hope you can give me some suggestion. Testing env: "Debian GNU/Linux 9 (stretch)" kernel: 5.7.0-rc2 5.6 both failed Description: run bpf: test_btf failed with ""Arg#0 type PTR in test_long_fname_2() is not supported yet."" Whole run log and kconfig please see the attatchment. Error info ``` root@vm-snb-42 /usr/src/perf_selftests-x86_64-rhel-7.6-kselftests-ae83d0b416db002fe95601e7f97f64b59514d936/tools/testing/selftests/bpf# ./test_btf BTF raw test[1] (struct test #1): OK BTF raw test[2] (struct test #2): OK BTF raw test[3] (struct test #3 Invalid member offset): OK [snip] BTF libbpf test[1] (test_btf_haskv.o): libbpf: load bpf program failed: Invalid argument libbpf: -- BEGIN DUMP LOG --- libbpf: Validating test_long_fname_2() func#1... Arg#0 type PTR in test_long_fname_2() is not supported yet. processed 0 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0 libbpf: -- END LOG -- libbpf: failed to load program 'dummy_tracepoint' libbpf: failed to load object 'test_btf_haskv.o' do_test_file:4201:FAIL bpf_object__load: -4007 BTF libbpf test[2] (test_btf_newkv.o): libbpf: load bpf program failed: Invalid argument libbpf: -- BEGIN DUMP LOG --- libbpf: Validating test_long_fname_2() func#1... Arg#0 type PTR in test_long_fname_2() is not supported yet. processed 0 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0 libbpf: -- END LOG -- libbpf: failed to load program 'dummy_tracepoint' libbpf: failed to load object 'test_btf_newkv.o' do_test_file:4201:FAIL bpf_object__load: -4007 BTF libbpf test[3] (test_btf_nokv.o): libbpf: load bpf program failed: Invalid argument libbpf: -- BEGIN DUMP LOG --- libbpf: Validating test_long_fname_2() func#1... Arg#0 type PTR in test_long_fname_2() is not supported yet. processed 0 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0 libbpf: -- END LOG -- libbpf: failed to load program 'dummy_tracepoint' libbpf: failed to load object 'test_btf_nokv.o' do_test_file:4201:FAIL bpf_object__load: -4007 [snip] ``` -- Best Regards. Ma Xinjian

5 years, 2 months

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[GIT PULL] Kselftest update for Linux 5.7-rc3

by Shuah Khan

Hi Linus, Please pull the following Kselftest update for Linux 5.7-rc3. This kselftest update for Linux 5.7-rc3 consists of fixes to runner scripts and individual test run-time bugs. Includes fixes to tpm2 and memfd test run-time regressions. diff is attached. thanks, -- Shuah ---------------------------------------------------------------- The following changes since commit 8f3d9f354286745c751374f5f1fcafee6b3f3136: Linux 5.7-rc1 (2020-04-12 12:35:55 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest tags/linux-kselftest-5.7-rc3 for you to fetch changes up to b87080eab4c1377706c113fc9c0157f19ea8fed1: selftests/ipc: Fix test failure seen after initial test run (2020-04-14 10:24:28 -0600) ---------------------------------------------------------------- linux-kselftest-5.7-rc3 This kselftest update for Linux 5.7-rc3 consists of fixes to runner scripts and individual test run-time bugs. Includes fixes to tpm2 and memfd test run-time regressions. ---------------------------------------------------------------- Andrea Righi (1): kselftest/runner: allow to properly deliver signals to tests Colin Ian King (1): selftests/harness: fix spelling mistake "SIGARLM" -> "SIGALRM" Jarkko Sakkinen (1): Revert "Kernel selftests: tpm2: check for tpm support" Sandipan Das (2): selftests: vm: Do not override definition of ARCH selftests: vm: Fix 64-bit test builds for powerpc64le Shuah Khan (1): selftests: Fix memfd test run-time regression Thadeu Lima de Souza Cascardo (1): selftests/seccomp: allow clock_nanosleep instead of nanosleep Tyler Hicks (1): selftests/ipc: Fix test failure seen after initial test run Xiao Yang (1): selftests/ftrace: Add CONFIG_SAMPLE_FTRACE_DIRECT=m kconfig tools/testing/selftests/ftrace/config | 1 + tools/testing/selftests/ipc/msgque.c | 2 +- tools/testing/selftests/kselftest/runner.sh | 2 +- tools/testing/selftests/kselftest_harness.h | 6 +++--- tools/testing/selftests/memfd/Makefile | 3 ++- tools/testing/selftests/seccomp/seccomp_bpf.c | 14 ++++++++------ tools/testing/selftests/tpm2/test_smoke.sh | 13 ++----------- tools/testing/selftests/tpm2/test_space.sh | 9 +-------- tools/testing/selftests/vm/Makefile | 4 ++-- tools/testing/selftests/vm/run_vmtests | 2 +- 10 files changed, 22 insertions(+), 34 deletions(-) ----------------------------------------------------------------

5 years, 2 months

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[PATCH v3] um: ensure `make ARCH=um mrproper` removes arch/$(SUBARCH)/include/generated/

by Vitor Massaru Iha

In this workflow: $ make ARCH=um defconfig && make ARCH=um -j8 [snip] $ make ARCH=um mrproper [snip] $ make ARCH=um defconfig O=./build_um && make ARCH=um -j8 O=./build_um [snip] CC scripts/mod/empty.o In file included from ../include/linux/types.h:6, from ../include/linux/mod_devicetable.h:12, from ../scripts/mod/devicetable-offsets.c:3: ../include/uapi/linux/types.h:5:10: fatal error: asm/types.h: No such file or directory 5 | #include <asm/types.h> | ^~~~~~~~~~~~~ compilation terminated. make[2]: *** [../scripts/Makefile.build:100: scripts/mod/devicetable-offsets.s] Error 1 make[2]: *** Waiting for unfinished jobs.... make[1]: *** [/home/iha/sdb/opensource/lkmp/linux-kselftest.git/Makefile:1140: prepare0] Error 2 make[1]: Leaving directory '/home/iha/sdb/opensource/lkmp/linux-kselftest.git/build_um' make: *** [Makefile:180: sub-make] Error 2 The cause of the error was because arch/$(SUBARCH)/include/generated files weren't properly cleaned by `make ARCH=um mrproper`. Fixes: a788b2ed81ab ("kbuild: check arch/$(SRCARCH)/include/generated before out-of-tree build"). Reported-by: Theodore Ts'o <tytso(a)mit.edu> Signed-off-by: Vitor Massaru Iha <vitor(a)massaru.org> Reviewed-by: Brendan Higgins <brendanhiggins(a)google.com> Tested-by: Brendan Higgins <brendanhiggins(a)google.com> Suggested-by: Masahiro Yamada <masahiroy(a)kernel.org> Link: https://groups.google.com/forum/#!msg/kunit-dev/QmA27YEgEgI/hvS1kiz2CwAJ --- v2: * Explains what this PATCH does and the importance as suggested by Brendan Higgins. v3: * This problem only affects ARCH=um builds then arch/um/Makefile has been changed as suggested by Masahiro Yamada; * And with that the description has also been changed, and also to explain missing points and correct the tags as suggested by Masahiro Yamada: - Fix missing command `make ARCH=um mrproper`; - Add build error message; - Add "Fixes" tag instead of "This bug was ..."; - Add "Link" tag instead of "Related bug ..."; - Add Reported-by and Suggested-by; --- arch/um/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/um/Makefile b/arch/um/Makefile index d2daa206872d..275f5ffdf6f0 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -140,6 +140,7 @@ export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) # When cleaning we don't include .config, so we don't include # TT or skas makefiles and don't clean skas_ptregs.h. CLEAN_FILES += linux x.i gmon.out +MRPROPER_DIRS += arch/$(SUBARCH)/include/generated archclean: @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ -- 2.25.1

5 years, 2 months

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[PATCH] selftests/ftrace: Check required filter files before running test

by Xiao Yang

Without CONFIG_DYNAMIC_FTRACE, some tests get failure because required filter files(set_ftrace_filter/available_filter_functions/stack_trace_filter) are missing. So implement check_filter_file() and make all related tests check required filter files by it. BTW: set_ftrace_filter and available_filter_functions are introduced together so just check either of them. Signed-off-by: Xiao Yang <yangx.jy(a)cn.fujitsu.com> --- .../selftests/ftrace/test.d/ftrace/fgraph-filter-stack.tc | 5 +---- .../testing/selftests/ftrace/test.d/ftrace/fgraph-filter.tc | 2 ++ .../selftests/ftrace/test.d/ftrace/func-filter-glob.tc | 2 ++ .../ftrace/test.d/ftrace/func-filter-notrace-pid.tc | 5 +---- .../selftests/ftrace/test.d/ftrace/func-filter-pid.tc | 5 +---- .../ftrace/test.d/ftrace/func-filter-stacktrace.tc | 2 +- .../selftests/ftrace/test.d/ftrace/func_event_triggers.tc | 5 +---- .../selftests/ftrace/test.d/ftrace/func_mod_trace.tc | 2 +- .../testing/selftests/ftrace/test.d/ftrace/func_profiler.tc | 5 +---- .../selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc | 5 +---- .../selftests/ftrace/test.d/ftrace/func_stack_tracer.tc | 2 ++ .../ftrace/test.d/ftrace/func_traceonoff_triggers.tc | 5 +---- tools/testing/selftests/ftrace/test.d/functions | 6 ++++++ .../testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc | 2 ++ 14 files changed, 23 insertions(+), 30 deletions(-) diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-filter-stack.tc b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-filter-stack.tc index aefab0c66d54..f59853857ad2 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-filter-stack.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-filter-stack.tc @@ -10,10 +10,7 @@ if ! grep -q function_graph available_tracers; then exit_unsupported fi -if [ ! -f set_ftrace_filter ]; then - echo "set_ftrace_filter not found? Is dynamic ftrace not set?" - exit_unsupported -fi +check_filter_file set_ftrace_filter do_reset() { if [ -e /proc/sys/kernel/stack_tracer_enabled ]; then diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-filter.tc b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-filter.tc index c8a5209f2119..d610f47edd90 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-filter.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/fgraph-filter.tc @@ -9,6 +9,8 @@ if ! grep -q function_graph available_tracers; then exit_unsupported fi +check_filter_file set_ftrace_filter + fail() { # msg echo $1 exit_fail diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc index f4e92afab14b..28936f434ee5 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-glob.tc @@ -9,6 +9,8 @@ if ! grep -q function available_tracers; then exit_unsupported fi +check_filter_file set_ftrace_filter + disable_tracing clear_trace diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-notrace-pid.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-notrace-pid.tc index 8aa46a2ea133..71db68a7975f 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-notrace-pid.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-notrace-pid.tc @@ -15,10 +15,7 @@ if [ ! -f set_ftrace_notrace_pid ]; then exit_unsupported fi -if [ ! -f set_ftrace_filter ]; then - echo "set_ftrace_filter not found? Is function tracer not set?" - exit_unsupported -fi +check_filter_file set_ftrace_filter do_function_fork=1 diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc index f2ee1e889e13..d58403c4b7cd 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-pid.tc @@ -16,10 +16,7 @@ if [ ! -f set_ftrace_pid ]; then exit_unsupported fi -if [ ! -f set_ftrace_filter ]; then - echo "set_ftrace_filter not found? Is function tracer not set?" - exit_unsupported -fi +check_filter_file set_ftrace_filter do_function_fork=1 diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-stacktrace.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-stacktrace.tc index 1a52f2883fe0..b2aff786c1a2 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-stacktrace.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func-filter-stacktrace.tc @@ -3,7 +3,7 @@ # description: ftrace - stacktrace filter command # flags: instance -[ ! -f set_ftrace_filter ] && exit_unsupported +check_filter_file set_ftrace_filter echo _do_fork:stacktrace >> set_ftrace_filter diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc index ca2ffd7957f9..e9b1fd534e96 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_event_triggers.tc @@ -11,10 +11,7 @@ # # The triggers are set within the set_ftrace_filter file -if [ ! -f set_ftrace_filter ]; then - echo "set_ftrace_filter not found? Is dynamic ftrace not set?" - exit_unsupported -fi +check_filter_file set_ftrace_filter do_reset() { reset_ftrace_filter diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc index 9330c873f9fe..1a4b4a442d33 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_mod_trace.tc @@ -2,7 +2,7 @@ # SPDX-License-Identifier: GPL-2.0 # description: ftrace - function trace on module -[ ! -f set_ftrace_filter ] && exit_unsupported +check_filter_file set_ftrace_filter : "mod: allows to filter a non exist function" echo 'non_exist_func:mod:non_exist_module' > set_ftrace_filter diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_profiler.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_profiler.tc index dfbae637c60c..a3dadb6b93b4 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_profiler.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_profiler.tc @@ -18,10 +18,7 @@ if ! grep -q function_graph available_tracers; then exit_unsupported; fi -if [ ! -f set_ftrace_filter ]; then - echo "set_ftrace_filter not found? Is dynamic ftrace not set?" - exit_unsupported -fi +check_filter_file set_ftrace_filter if [ ! -f function_profile_enabled ]; then echo "function_profile_enabled not found, function profiling enabled?" diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc index 51f6e6146bd9..70bad441fa7d 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc @@ -10,10 +10,7 @@ # # The triggers are set within the set_ftrace_filter file -if [ ! -f set_ftrace_filter ]; then - echo "set_ftrace_filter not found? Is dynamic ftrace not set?" - exit_unsupported -fi +check_filter_file set_ftrace_filter fail() { # mesg echo $1 diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_stack_tracer.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_stack_tracer.tc index b414f0e3c646..51e9e80bc0e6 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_stack_tracer.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_stack_tracer.tc @@ -8,6 +8,8 @@ if [ ! -f stack_trace ]; then exit_unsupported fi +check_filter_file stack_trace_filter + echo > stack_trace_filter echo 0 > stack_max_size echo 1 > /proc/sys/kernel/stack_tracer_enabled diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc index 1947387fe976..3ed173f2944a 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc @@ -11,10 +11,7 @@ # # The triggers are set within the set_ftrace_filter file -if [ ! -f set_ftrace_filter ]; then - echo "set_ftrace_filter not found? Is dynamic ftrace not set?" - exit_unsupported -fi +check_filter_file set_ftrace_filter fail() { # mesg echo $1 diff --git a/tools/testing/selftests/ftrace/test.d/functions b/tools/testing/selftests/ftrace/test.d/functions index 5d4550591ff9..61a3c7e2634d 100644 --- a/tools/testing/selftests/ftrace/test.d/functions +++ b/tools/testing/selftests/ftrace/test.d/functions @@ -1,3 +1,9 @@ +check_filter_file() { # check filter file introduced by dynamic ftrace + if [ ! -f "$1" ]; then + echo "$1 not found? Is dynamic ftrace not set?" + exit_unsupported + fi +} clear_trace() { # reset trace output echo > trace diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc index 7650a82db3f5..df5072815b87 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc @@ -5,6 +5,8 @@ [ -f kprobe_events ] || exit_unsupported # this is configurable grep "function" available_tracers || exit_unsupported # this is configurable +check_filter_file set_ftrace_filter + # prepare echo nop > current_tracer echo _do_fork > set_ftrace_filter -- 2.25.1

5 years, 2 months

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