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

[PATCH] selftests/ftrace: Fix test to handle both old and new kernels

by Steven Rostedt

From: "Steven Rostedt (Google)" <rostedt(a)goodmis.org> The function "scheduler_tick" was renamed to "sched_tick" and a selftest that used that function for testing function trace filtering used that function as part of the test. But the change causes it to fail when run on older kernels. As tests should not fail on older kernels, add a check to see which name is available before testing. Fixes: 86dd6c04ef9f2 ("sched/balancing: Rename scheduler_tick() => sched_tick()") Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> --- .../ftrace/test.d/ftrace/func_set_ftrace_file.tc | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) 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 073a748b9380..263f6b798c85 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 @@ -19,7 +19,14 @@ fail() { # mesg FILTER=set_ftrace_filter FUNC1="schedule" -FUNC2="sched_tick" +if grep '^sched_tick\b' available_filter_functions; then + FUNC2="sched_tick" +elif grep '^scheduler_tick\b' available_filter_functions; then + FUNC2="scheduler_tick" +else + exit_unresolved +fi + ALL_FUNCS="#### all functions enabled ####" -- 2.43.0

8 months, 1 week

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[PATCH net-next v2] selftests: net: add helper for checking if nettest is available

by Jakub Kicinski

A few tests check if nettest exists in the $PATH before adding $PWD to $PATH and re-checking. They don't discard stderr on the first check (and nettest is built as part of selftests, so it's pretty normal for it to not be available in system $PATH). This leads to output noise: which: no nettest in (/home/virtme/tools/fs/bin:/home/virtme/tools/fs/sbin:/home/virtme/tools/fs/usr/bin:/home/virtme/tools/fs/usr/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin) Add a common helper for the check which does silence stderr. There is another small functional change hiding here, because pmtu.sh and fib_rule_tests.sh used to return from the test case rather than completely exit. Building nettest is not hard, there should be no need to maintain the ability to selectively skip cases in its absence. Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- v2: - fold in the changes from Ido v1: https://lore.kernel.org/20240817183848.658443-1-kuba@kernel.org CC: shuah(a)kernel.org CC: linux-kselftest(a)vger.kernel.org CC: Ido Schimmel <idosch(a)idosch.org> --- tools/testing/selftests/net/fcnal-test.sh | 9 +---- tools/testing/selftests/net/fib_rule_tests.sh | 37 +------------------ tools/testing/selftests/net/lib.sh | 15 ++++++++ tools/testing/selftests/net/pmtu.sh | 8 +--- tools/testing/selftests/net/settings | 1 + .../selftests/net/unicast_extensions.sh | 9 +---- .../selftests/net/vrf_route_leaking.sh | 3 +- 7 files changed, 23 insertions(+), 59 deletions(-) diff --git a/tools/testing/selftests/net/fcnal-test.sh b/tools/testing/selftests/net/fcnal-test.sh index 386ebd829df5..899dbad0104b 100755 --- a/tools/testing/selftests/net/fcnal-test.sh +++ b/tools/testing/selftests/net/fcnal-test.sh @@ -4304,14 +4304,7 @@ elif [ "$TESTS" = "ipv6" ]; then TESTS="$TESTS_IPV6" fi -# nettest can be run from PATH or from same directory as this selftest -if ! which nettest >/dev/null; then - PATH=$PWD:$PATH - if ! which nettest >/dev/null; then - echo "'nettest' command not found; skipping tests" - exit $ksft_skip - fi -fi +check_gen_prog "nettest" declare -i nfail=0 declare -i nsuccess=0 diff --git a/tools/testing/selftests/net/fib_rule_tests.sh b/tools/testing/selftests/net/fib_rule_tests.sh index 89034c5b69dc..53c5c1ad437e 100755 --- a/tools/testing/selftests/net/fib_rule_tests.sh +++ b/tools/testing/selftests/net/fib_rule_tests.sh @@ -51,31 +51,6 @@ log_test() fi } -check_nettest() -{ - if which nettest > /dev/null 2>&1; then - return 0 - fi - - # Add the selftest directory to PATH if not already done - if [ "${SELFTEST_PATH}" = "" ]; then - SELFTEST_PATH="$(dirname $0)" - PATH="${PATH}:${SELFTEST_PATH}" - - # Now retry with the new path - if which nettest > /dev/null 2>&1; then - return 0 - fi - - if [ "${ret}" -eq 0 ]; then - ret="${ksft_skip}" - fi - echo "nettest not found (try 'make -C ${SELFTEST_PATH} nettest')" - fi - - return 1 -} - setup() { set -e @@ -317,11 +292,6 @@ fib_rule6_connect_test() echo echo "IPv6 FIB rule connect tests" - if ! check_nettest; then - echo "SKIP: Could not run test without nettest tool" - return - fi - setup_peer $IP -6 rule add dsfield 0x04 table $RTABLE_PEER @@ -516,11 +486,6 @@ fib_rule4_connect_test() echo echo "IPv4 FIB rule connect tests" - if ! check_nettest; then - echo "SKIP: Could not run test without nettest tool" - return - fi - setup_peer $IP -4 rule add dsfield 0x04 table $RTABLE_PEER @@ -584,6 +549,8 @@ if [ ! -x "$(command -v ip)" ]; then exit $ksft_skip fi +check_gen_prog "nettest" + # start clean cleanup &> /dev/null setup diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh index 8ee4489238ca..be8707bfb46e 100644 --- a/tools/testing/selftests/net/lib.sh +++ b/tools/testing/selftests/net/lib.sh @@ -125,6 +125,21 @@ slowwait_for_counter() slowwait "$timeout" until_counter_is ">= $((base + delta))" "$@" } +# Check for existence of tools which are built as part of selftests +# but may also already exist in $PATH +check_gen_prog() +{ + local prog_name=$1; shift + + if ! which $prog_name >/dev/null 2>/dev/null; then + PATH=$PWD:$PATH + if ! which $prog_name >/dev/null; then + echo "'$prog_name' command not found; skipping tests" + exit $ksft_skip + fi + fi +} + remove_ns_list() { local item=$1 diff --git a/tools/testing/selftests/net/pmtu.sh b/tools/testing/selftests/net/pmtu.sh index 24a50622406c..569bce8b6383 100755 --- a/tools/testing/selftests/net/pmtu.sh +++ b/tools/testing/selftests/net/pmtu.sh @@ -681,13 +681,7 @@ setup_xfrm() { } setup_nettest_xfrm() { - if ! which nettest >/dev/null; then - PATH=$PWD:$PATH - if ! which nettest >/dev/null; then - echo "'nettest' command not found; skipping tests" - return 1 - fi - fi + check_gen_prog "nettest" [ ${1} -eq 6 ] && proto="-6" || proto="" port=${2} diff --git a/tools/testing/selftests/net/settings b/tools/testing/selftests/net/settings index ed8418e8217a..a38764182822 100644 --- a/tools/testing/selftests/net/settings +++ b/tools/testing/selftests/net/settings @@ -1 +1,2 @@ timeout=3600 +profile=1 diff --git a/tools/testing/selftests/net/unicast_extensions.sh b/tools/testing/selftests/net/unicast_extensions.sh index f52aa5f7da52..3e751234ccfe 100755 --- a/tools/testing/selftests/net/unicast_extensions.sh +++ b/tools/testing/selftests/net/unicast_extensions.sh @@ -30,14 +30,7 @@ source lib.sh -# nettest can be run from PATH or from same directory as this selftest -if ! which nettest >/dev/null; then - PATH=$PWD:$PATH - if ! which nettest >/dev/null; then - echo "'nettest' command not found; skipping tests" - exit $ksft_skip - fi -fi +check_gen_prog "nettest" result=0 diff --git a/tools/testing/selftests/net/vrf_route_leaking.sh b/tools/testing/selftests/net/vrf_route_leaking.sh index 152171fb1fc8..e9c2f71da207 100755 --- a/tools/testing/selftests/net/vrf_route_leaking.sh +++ b/tools/testing/selftests/net/vrf_route_leaking.sh @@ -59,7 +59,6 @@ # while it is forwarded between different vrfs. source lib.sh -PATH=$PWD:$PWD/tools/testing/selftests/net:$PATH VERBOSE=0 PAUSE_ON_FAIL=no DEFAULT_TTYPE=sym @@ -636,6 +635,8 @@ EOF # Some systems don't have a ping6 binary anymore command -v ping6 > /dev/null 2>&1 && ping6=$(command -v ping6) || ping6=$(command -v ping) +check_gen_prog "nettest" + TESTS_IPV4="ipv4_ping_ttl ipv4_traceroute ipv4_ping_frag ipv4_ping_local ipv4_tcp_local ipv4_udp_local ipv4_ping_ttl_asym ipv4_traceroute_asym" TESTS_IPV6="ipv6_ping_ttl ipv6_traceroute ipv6_ping_local ipv6_tcp_local ipv6_udp_local -- 2.46.0

8 months, 1 week

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[PATCH net 00/14] mptcp: pm: fix IDs not being reusable

by Matthieu Baerts (NGI0)

Here are more fixes for the MPTCP in-kernel path-manager. In this series, the fixes are around the endpoint IDs not being reusable for on-going connections when re-creating endpoints with previously used IDs. - Patch 1 fixes this case for endpoints being used to send ADD_ADDR. Patch 2 validates this fix. The issue is present since v5.10. - Patch 3 fixes this case for endpoints being used to establish new subflows. Patch 4 validates this fix. The issue is present since v5.10. - Patch 5 fixes this case when all endpoints are flushed. Patch 6 validates this fix. The issue is present since v5.13. - Patch 7 removes a helper that is confusing, and introduced in v5.10. It helps simplifying the next patches. - Patch 8 makes sure a 'subflow' counter is only decremented when removing a 'subflow' endpoint. Can be backported up to v5.13. - Patch 9 is similar, but for a 'signal' counter. Can be backported up to v5.10. - Patch 10 checks the last max accepted ADD_ADDR limit before accepting new ADD_ADDR. For v5.10 as well. - Patch 11 removes a wrong restriction for the userspace PM, added during a refactoring in v6.5. - Patch 12 makes sure the fullmesh mode sets the ID 0 when a new subflow using the source address of the initial subflow is created. Patch 13 covers this case. This issue is present since v5.15. - Patch 14 avoid possible UaF when selecting an address from the endpoints list. Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> --- Matthieu Baerts (NGI0) (14): mptcp: pm: re-using ID of unused removed ADD_ADDR selftests: mptcp: join: check re-using ID of unused ADD_ADDR mptcp: pm: re-using ID of unused removed subflows selftests: mptcp: join: check re-using ID of closed subflow mptcp: pm: re-using ID of unused flushed subflows selftests: mptcp: join: test for flush/re-add endpoints mptcp: pm: remove mptcp_pm_remove_subflow() mptcp: pm: only mark 'subflow' endp as available mptcp: pm: only decrement add_addr_accepted for MPJ req mptcp: pm: check add_addr_accept_max before accepting new ADD_ADDR mptcp: pm: only in-kernel cannot have entries with ID 0 mptcp: pm: fullmesh: select the right ID later selftests: mptcp: join: validate fullmesh endp on 1st sf mptcp: pm: avoid possible UaF when selecting endp net/mptcp/pm.c | 13 --- net/mptcp/pm_netlink.c | 142 ++++++++++++++++-------- net/mptcp/protocol.h | 3 - tools/testing/selftests/net/mptcp/mptcp_join.sh | 76 +++++++++++-- 4 files changed, 160 insertions(+), 74 deletions(-) --- base-commit: 565d121b69980637f040eb4d84289869cdaabedf change-id: 20240819-net-mptcp-pm-reusing-id-eb08827b7be6 Best regards, -- Matthieu Baerts (NGI0) <matttbe(a)kernel.org>

8 months, 1 week

2
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kselftest/next kselftest-lib: 1 runs, 1 regressions (v6.11-rc1-13-g41f37c852ac3f)

by kernelci.org bot

kselftest/next kselftest-lib: 1 runs, 1 regressions (v6.11-rc1-13-g41f37c852ac3f) Regressions Summary ------------------- platform | arch | lab | compiler | defconfig | regressions ----------------------------+------+-------------+----------+------------------------------+------------ stm32mp157a-dhcor-avenger96 | arm | lab-broonie | gcc-12 | multi_v7_defconfig+kselftest | 1 Details: https://kernelci.org/test/job/kselftest/branch/next/kernel/v6.11-rc1-13-g41… Test: kselftest-lib Tree: kselftest Branch: next Describe: v6.11-rc1-13-g41f37c852ac3f URL: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git SHA: 41f37c852ac3fbfd072a00281b60dc7ba056be8c Test Regressions ---------------- platform | arch | lab | compiler | defconfig | regressions ----------------------------+------+-------------+----------+------------------------------+------------ stm32mp157a-dhcor-avenger96 | arm | lab-broonie | gcc-12 | multi_v7_defconfig+kselftest | 1 Details: https://kernelci.org/test/plan/id/66c5140122b4b11599c8685e Results: 0 PASS, 1 FAIL, 0 SKIP Full config: multi_v7_defconfig+kselftest Compiler: gcc-12 (arm-linux-gnueabihf-gcc (Debian 12.2.0-14) 12.2.0) Plain log: https://storage.kernelci.org//kselftest/next/v6.11-rc1-13-g41f37c852ac3f/ar… HTML log: https://storage.kernelci.org//kselftest/next/v6.11-rc1-13-g41f37c852ac3f/ar… Rootfs: http://storage.kernelci.org/images/rootfs/debian/bookworm-kselftest/2024031… * kselftest-lib.login: https://kernelci.org/test/case/id/66c5140122b4b11599c8685f failing since 21 days (last pass: v6.10-rc7-29-gdf09b0bb09ea, first fail: v6.11-rc1)

8 months, 1 week

1
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kselftest/next kselftest-lkdtm: 1 runs, 1 regressions (v6.11-rc1-13-g41f37c852ac3f)

by kernelci.org bot

kselftest/next kselftest-lkdtm: 1 runs, 1 regressions (v6.11-rc1-13-g41f37c852ac3f) Regressions Summary ------------------- platform | arch | lab | compiler | defconfig | regressions ----------------------------+------+-------------+----------+------------------------------+------------ stm32mp157a-dhcor-avenger96 | arm | lab-broonie | gcc-12 | multi_v7_defconfig+kselftest | 1 Details: https://kernelci.org/test/job/kselftest/branch/next/kernel/v6.11-rc1-13-g41… Test: kselftest-lkdtm Tree: kselftest Branch: next Describe: v6.11-rc1-13-g41f37c852ac3f URL: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git SHA: 41f37c852ac3fbfd072a00281b60dc7ba056be8c Test Regressions ---------------- platform | arch | lab | compiler | defconfig | regressions ----------------------------+------+-------------+----------+------------------------------+------------ stm32mp157a-dhcor-avenger96 | arm | lab-broonie | gcc-12 | multi_v7_defconfig+kselftest | 1 Details: https://kernelci.org/test/plan/id/66c5128498efe3795cc86925 Results: 0 PASS, 1 FAIL, 0 SKIP Full config: multi_v7_defconfig+kselftest Compiler: gcc-12 (arm-linux-gnueabihf-gcc (Debian 12.2.0-14) 12.2.0) Plain log: https://storage.kernelci.org//kselftest/next/v6.11-rc1-13-g41f37c852ac3f/ar… HTML log: https://storage.kernelci.org//kselftest/next/v6.11-rc1-13-g41f37c852ac3f/ar… Rootfs: http://storage.kernelci.org/images/rootfs/debian/bookworm-kselftest/2024031… * kselftest-lkdtm.login: https://kernelci.org/test/case/id/66c5128498efe3795cc86926 failing since 21 days (last pass: v6.10-rc7-29-gdf09b0bb09ea, first fail: v6.11-rc1)

8 months, 1 week

1
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kselftest/next kselftest-seccomp: 1 runs, 1 regressions (v6.11-rc1-13-g41f37c852ac3f)

by kernelci.org bot

kselftest/next kselftest-seccomp: 1 runs, 1 regressions (v6.11-rc1-13-g41f37c852ac3f) Regressions Summary ------------------- platform | arch | lab | compiler | defconfig | regressions ----------------------------+------+-------------+----------+------------------------------+------------ stm32mp157a-dhcor-avenger96 | arm | lab-broonie | gcc-12 | multi_v7_defconfig+kselftest | 1 Details: https://kernelci.org/test/job/kselftest/branch/next/kernel/v6.11-rc1-13-g41… Test: kselftest-seccomp Tree: kselftest Branch: next Describe: v6.11-rc1-13-g41f37c852ac3f URL: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git SHA: 41f37c852ac3fbfd072a00281b60dc7ba056be8c Test Regressions ---------------- platform | arch | lab | compiler | defconfig | regressions ----------------------------+------+-------------+----------+------------------------------+------------ stm32mp157a-dhcor-avenger96 | arm | lab-broonie | gcc-12 | multi_v7_defconfig+kselftest | 1 Details: https://kernelci.org/test/plan/id/66c5157c7ea50df009c86855 Results: 0 PASS, 1 FAIL, 0 SKIP Full config: multi_v7_defconfig+kselftest Compiler: gcc-12 (arm-linux-gnueabihf-gcc (Debian 12.2.0-14) 12.2.0) Plain log: https://storage.kernelci.org//kselftest/next/v6.11-rc1-13-g41f37c852ac3f/ar… HTML log: https://storage.kernelci.org//kselftest/next/v6.11-rc1-13-g41f37c852ac3f/ar… Rootfs: http://storage.kernelci.org/images/rootfs/debian/bookworm-kselftest/2024031… * kselftest-seccomp.login: https://kernelci.org/test/case/id/66c5157c7ea50df009c86856 failing since 21 days (last pass: v6.10-rc7-29-gdf09b0bb09ea, first fail: v6.11-rc1)

8 months, 1 week

1
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[PATCH net-next] selftests: net/forwarding: spawn sh inside vrf to speed up ping loop

by Jakub Kicinski

Looking at timestamped output of netdev CI reveals that most of the time in forwarding tests for custom route hashing is spent on a single case, namely the test which uses ping (mausezahn does not support flow labels). On a non-debug kernel we spend 714 of 730 total test runtime (97%) on this test case. While having flow label support in a traffic gen tool / mausezahn would be best, we can significantly speed up the loop by putting ip vrf exec outside of the iteration. In a test of 1000 pings using a normal loop takes 50 seconds to finish. While using: ip vrf exec $vrf sh -c "$loop-body" takes 12 seconds (1/4 of the time). Some of the slowness is likely due to our inefficient virtualization setup, but even on my laptop running "ip link help" 16k times takes 25-30 seconds, so I think it's worth optimizing even for fastest setups. Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> --- CC: shuah(a)kernel.org CC: idosch(a)nvidia.com CC: linux-kselftest(a)vger.kernel.org --- .../selftests/net/forwarding/custom_multipath_hash.sh | 8 ++++---- .../selftests/net/forwarding/gre_custom_multipath_hash.sh | 8 ++++---- .../net/forwarding/ip6gre_custom_multipath_hash.sh | 8 ++++---- 3 files changed, 12 insertions(+), 12 deletions(-) diff --git a/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh b/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh index 1783c10215e5..7d531f7091e6 100755 --- a/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh +++ b/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh @@ -224,10 +224,10 @@ send_dst_ipv6() send_flowlabel() { # Generate 16384 echo requests, each with a random flow label. - for _ in $(seq 1 16384); do - ip vrf exec v$h1 \ - $PING6 2001:db8:4::2 -F 0 -c 1 -q >/dev/null 2>&1 - done + ip vrf exec v$h1 sh -c \ + "for _ in {1..16384}; do \ + $PING6 2001:db8:4::2 -F 0 -c 1 -q >/dev/null 2>&1; \ + done" } send_src_udp6() diff --git a/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh b/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh index 9788bd0f6e8b..dda11a4a9450 100755 --- a/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh +++ b/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh @@ -319,10 +319,10 @@ send_dst_ipv6() send_flowlabel() { # Generate 16384 echo requests, each with a random flow label. - for _ in $(seq 1 16384); do - ip vrf exec v$h1 \ - $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1 - done + ip vrf exec v$h1 sh -c \ + "for _ in {1..16384}; do \ + $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1; \ + done" } send_src_udp6() diff --git a/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh b/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh index 2ab9eaaa5532..e28b4a079e52 100755 --- a/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh +++ b/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh @@ -321,10 +321,10 @@ send_dst_ipv6() send_flowlabel() { # Generate 16384 echo requests, each with a random flow label. - for _ in $(seq 1 16384); do - ip vrf exec v$h1 \ - $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1 - done + ip vrf exec v$h1 sh -c \ + "for _ in {1..16384}; do \ + $PING6 2001:db8:2::2 -F 0 -c 1 -q >/dev/null 2>&1; \ + done" } send_src_udp6() -- 2.46.0

8 months, 1 week

4
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[PATCH v2] kunit: Device wrappers should also manage driver name

by David Gow

kunit_driver_create() accepts a name for the driver, but does not copy it, so if that name is either on the stack, or otherwise freed, we end up with a use-after-free when the driver is cleaned up. Instead, strdup() the name, and manage it as another KUnit allocation. As there was no existing kunit_kstrdup(), we add one. Further, add a kunit_ variant of strdup_const() and kfree_const(), so we don't need to allocate and manage the string in the majority of cases where it's a constant. However, these are inline functions, and is_kernel_rodata() only works for built-in code. This causes problems in two cases: - If kunit is built as a module, __{start,end}_rodata is not defined. - If a kunit test using these functions is built as a module, it will suffer the same fate. This fixes a KASAN splat with overflow.overflow_allocation_test, when built as a module. Restrict the is_kernel_rodata() case to when KUnit is built as a module, which fixes the first case, at the cost of losing the optimisation. Also, make kunit_{kstrdup,kfree}_const non-inline, so that other modules using them will not accidentally depend on is_kernel_rodata(). If KUnit is built-in, they'll benefit from the optimisation, if KUnit is not, they won't, but the string will be properly duplicated. Fixes: d03c720e03bd ("kunit: Add APIs for managing devices") Reported-by: Nico Pache <npache(a)redhat.com> Closes: https://groups.google.com/g/kunit-dev/c/81V9b9QYON0 Reviewed-by: Kees Cook <kees(a)kernel.org> Reviewed-by: Maxime Ripard <mripard(a)kernel.org> Reviewed-by: Rae Moar <rmoar(a)google.com> Signed-off-by: David Gow <davidgow(a)google.com> --- This is a combination of the previous version of this patch with the follow-up fix "kunit: Fix kunit_kstrdup_const() with modules". kunit_kstrdup_const() now falls back to kstrdup() if KUnit is built as a module, and is no longer inlined. This should fix the issues we'd seen before. I've not tried doing something fancy by looking at module rodata sections: it might be a possible optimisation, but it seems like it'd overcomplicate things for this initial change. If we hit a KUnit test where this is a bottleneck (or if I have some more spare time), we can look into it. The overflow_kunit test has been fixed independently to not rely on this anyway, so there shouldn't be any current cases of this causing issues, but it's worth making the API robust regardless. Changes since previous version: https://lore.kernel.org/linux-kselftest/20240731070207.3918687-1-davidgow@g… - Fix module support by integrating: https://lore.kernel.org/linux-kselftest/20240806020136.3481593-1-davidgow@g… --- include/kunit/test.h | 48 ++++++++++++++++++++++++++++++++++++++++++++ lib/kunit/device.c | 7 +++++-- lib/kunit/test.c | 19 ++++++++++++++++++ 3 files changed, 72 insertions(+), 2 deletions(-) diff --git a/include/kunit/test.h b/include/kunit/test.h index e2a1f0928e8b..5ac237c949a0 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -28,6 +28,7 @@ #include <linux/types.h> #include <asm/rwonce.h> +#include <asm/sections.h> /* Static key: true if any KUnit tests are currently running */ DECLARE_STATIC_KEY_FALSE(kunit_running); @@ -480,6 +481,53 @@ static inline void *kunit_kcalloc(struct kunit *test, size_t n, size_t size, gfp return kunit_kmalloc_array(test, n, size, gfp | __GFP_ZERO); } + +/** + * kunit_kfree_const() - conditionally free test managed memory + * @x: pointer to the memory + * + * Calls kunit_kfree() only if @x is not in .rodata section. + * See kunit_kstrdup_const() for more information. + */ +void kunit_kfree_const(struct kunit *test, const void *x); + +/** + * kunit_kstrdup() - Duplicates a string into a test managed allocation. + * + * @test: The test context object. + * @str: The NULL-terminated string to duplicate. + * @gfp: flags passed to underlying kmalloc(). + * + * See kstrdup() and kunit_kmalloc_array() for more information. + */ +static inline char *kunit_kstrdup(struct kunit *test, const char *str, gfp_t gfp) +{ + size_t len; + char *buf; + + if (!str) + return NULL; + + len = strlen(str) + 1; + buf = kunit_kmalloc(test, len, gfp); + if (buf) + memcpy(buf, str, len); + return buf; +} + +/** + * kunit_kstrdup_const() - Conditionally duplicates a string into a test managed allocation. + * + * @test: The test context object. + * @str: The NULL-terminated string to duplicate. + * @gfp: flags passed to underlying kmalloc(). + * + * Calls kunit_kstrdup() only if @str is not in the rodata section. Must be freed with + * kunit_kfree_const() -- not kunit_kfree(). + * See kstrdup_const() and kunit_kmalloc_array() for more information. + */ +const char *kunit_kstrdup_const(struct kunit *test, const char *str, gfp_t gfp); + /** * kunit_vm_mmap() - Allocate KUnit-tracked vm_mmap() area * @test: The test context object. diff --git a/lib/kunit/device.c b/lib/kunit/device.c index 25c81ed465fb..520c1fccee8a 100644 --- a/lib/kunit/device.c +++ b/lib/kunit/device.c @@ -89,7 +89,7 @@ struct device_driver *kunit_driver_create(struct kunit *test, const char *name) if (!driver) return ERR_PTR(err); - driver->name = name; + driver->name = kunit_kstrdup_const(test, name, GFP_KERNEL); driver->bus = &kunit_bus_type; driver->owner = THIS_MODULE; @@ -192,8 +192,11 @@ void kunit_device_unregister(struct kunit *test, struct device *dev) const struct device_driver *driver = to_kunit_device(dev)->driver; kunit_release_action(test, device_unregister_wrapper, dev); - if (driver) + if (driver) { + const char *driver_name = driver->name; kunit_release_action(test, driver_unregister_wrapper, (void *)driver); + kunit_kfree_const(test, driver_name); + } } EXPORT_SYMBOL_GPL(kunit_device_unregister); diff --git a/lib/kunit/test.c b/lib/kunit/test.c index e8b1b52a19ab..089c832e3cdb 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -874,6 +874,25 @@ void kunit_kfree(struct kunit *test, const void *ptr) } EXPORT_SYMBOL_GPL(kunit_kfree); +void kunit_kfree_const(struct kunit *test, const void *x) +{ +#if !IS_MODULE(CONFIG_KUNIT) + if (!is_kernel_rodata((unsigned long)x)) +#endif + kunit_kfree(test, x); +} +EXPORT_SYMBOL_GPL(kunit_kfree_const); + +const char *kunit_kstrdup_const(struct kunit *test, const char *str, gfp_t gfp) +{ +#if !IS_MODULE(CONFIG_KUNIT) + if (is_kernel_rodata((unsigned long)str)) + return str; +#endif + return kunit_kstrdup(test, str, gfp); +} +EXPORT_SYMBOL_GPL(kunit_kstrdup_const); + void kunit_cleanup(struct kunit *test) { struct kunit_resource *res; -- 2.46.0.184.g6999bdac58-goog

8 months, 1 week

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kselftest/next build: 7 builds: 2 failed, 5 passed, 1 warning (v6.11-rc1-13-g41f37c852ac3f)

by kernelci.org bot

kselftest/next build: 7 builds: 2 failed, 5 passed, 1 warning (v6.11-rc1-13-g41f37c852ac3f) Full Build Summary: https://kernelci.org/build/kselftest/branch/next/kernel/v6.11-rc1-13-g41f37… Tree: kselftest Branch: next Git Describe: v6.11-rc1-13-g41f37c852ac3f Git Commit: 41f37c852ac3fbfd072a00281b60dc7ba056be8c Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git Built: 4 unique architectures Build Failures Detected: arm64: defconfig+kselftest+arm64-chromebook: (clang-16) FAIL defconfig+kselftest+arm64-chromebook: (gcc-12) FAIL Warnings Detected: arm64: arm: i386: x86_64: x86_64_defconfig+kselftest (clang-16): 1 warning Warnings summary: 1 vmlinux.o: warning: objtool: set_ftrace_ops_ro+0x39: relocation to !ENDBR: .text+0x14ef94 ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- defconfig+kselftest (arm64, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+kselftest+arm64-chromebook (arm64, gcc-12) — FAIL, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig+kselftest+arm64-chromebook (arm64, clang-16) — FAIL, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig+kselftest (i386, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig+kselftest (arm, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig+kselftest (x86_64, clang-16) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: vmlinux.o: warning: objtool: set_ftrace_ops_ro+0x39: relocation to !ENDBR: .text+0x14ef94 -------------------------------------------------------------------------------- x86_64_defconfig+kselftest (x86_64, gcc-12) — PASS, 0 errors, 0 warnings, 0 section mismatches --- For more info write to <info(a)kernelci.org>

8 months, 1 week

1
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[PATCH v9 00/13] riscv: Add support for xtheadvector

by Charlie Jenkins

xtheadvector is a custom extension that is based upon riscv vector version 0.7.1 [1]. All of the vector routines have been modified to support this alternative vector version based upon whether xtheadvector was determined to be supported at boot. vlenb is not supported on the existing xtheadvector hardware, so a devicetree property thead,vlenb is added to provide the vlenb to Linux. There is a new hwprobe key RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0 that is used to request which thead vendor extensions are supported on the current platform. This allows future vendors to allocate hwprobe keys for their vendor. Support for xtheadvector is also added to the vector kselftests. Signed-off-by: Charlie Jenkins <charlie(a)rivosinc.com> [1] https://github.com/T-head-Semi/thead-extension-spec/blob/95358cb2cca9489361… --- This series is a continuation of a different series that was fragmented into two other series in an attempt to get part of it merged in the 6.10 merge window. The split-off series did not get merged due to a NAK on the series that added the generic riscv,vlenb devicetree entry. This series has converted riscv,vlenb to thead,vlenb to remedy this issue. The original series is titled "riscv: Support vendor extensions and xtheadvector" [3]. The series titled "riscv: Extend cpufeature.c to detect vendor extensions" is still under development and this series is based on that series! [4] I have tested this with an Allwinner Nezha board. I ran into issues booting the board after 6.9-rc1 so I applied these patches to 6.8. There are a couple of minor merge conflicts that do arrise when doing that, so please let me know if you have been able to boot this board with a 6.9 kernel. I used SkiffOS [1] to manage building the image, but upgraded the U-Boot version to Samuel Holland's more up-to-date version [2] and changed out the device tree used by U-Boot with the device trees that are present in upstream linux and this series. Thank you Samuel for all of the work you did to make this task possible. [1] https://github.com/skiffos/SkiffOS/tree/master/configs/allwinner/nezha [2] https://github.com/smaeul/u-boot/commit/2e89b706f5c956a70c989cd31665f1429e9… [3] https://lore.kernel.org/all/20240503-dev-charlie-support_thead_vector_6_9-v… [4] https://lore.kernel.org/lkml/20240719-support_vendor_extensions-v3-4-0af758… --- Changes in v9: - Rebase onto palmer's for-next - Fix sparse error in arch/riscv/kernel/vendor_extensions/thead.c - Fix maybe-uninitialized warning in arch/riscv/include/asm/vendor_extensions/vendor_hwprobe.h - Wrap some long lines - Link to v8: https://lore.kernel.org/r/20240724-xtheadvector-v8-0-cf043168e137@rivosinc.… Changes in v8: - Rebase onto palmer's for-next - Link to v7: https://lore.kernel.org/r/20240724-xtheadvector-v7-0-b741910ada3e@rivosinc.… Changes in v7: - Add defs for has_xtheadvector_no_alternatives() and has_xtheadvector() when vector disabled. (Palmer) - Link to v6: https://lore.kernel.org/r/20240722-xtheadvector-v6-0-c9af0130fa00@rivosinc.… Changes in v6: - Fix return type of is_vector_supported()/is_xthead_supported() to be bool - Link to v5: https://lore.kernel.org/r/20240719-xtheadvector-v5-0-4b485fc7d55f@rivosinc.… Changes in v5: - Rebase on for-next - Link to v4: https://lore.kernel.org/r/20240702-xtheadvector-v4-0-2bad6820db11@rivosinc.… Changes in v4: - Replace inline asm with C (Samuel) - Rename VCSRs to CSRs (Samuel) - Replace .insn directives with .4byte directives - Link to v3: https://lore.kernel.org/r/20240619-xtheadvector-v3-0-bff39eb9668e@rivosinc.… Changes in v3: - Add back Heiko's signed-off-by (Conor) - Mark RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0 as a bitmask - Link to v2: https://lore.kernel.org/r/20240610-xtheadvector-v2-0-97a48613ad64@rivosinc.… Changes in v2: - Removed extraneous references to "riscv,vlenb" (Jess) - Moved declaration of "thead,vlenb" into cpus.yaml and added restriction that it's only applicable to thead cores (Conor) - Check CONFIG_RISCV_ISA_XTHEADVECTOR instead of CONFIG_RISCV_ISA_V for thead,vlenb (Jess) - Fix naming of hwprobe variables (Evan) - Link to v1: https://lore.kernel.org/r/20240609-xtheadvector-v1-0-3fe591d7f109@rivosinc.… --- Charlie Jenkins (12): dt-bindings: riscv: Add xtheadvector ISA extension description dt-bindings: cpus: add a thead vlen register length property riscv: dts: allwinner: Add xtheadvector to the D1/D1s devicetree riscv: Add thead and xtheadvector as a vendor extension riscv: vector: Use vlenb from DT for thead riscv: csr: Add CSR encodings for CSR_VXRM/CSR_VXSAT riscv: Add xtheadvector instruction definitions riscv: vector: Support xtheadvector save/restore riscv: hwprobe: Add thead vendor extension probing riscv: hwprobe: Document thead vendor extensions and xtheadvector extension selftests: riscv: Fix vector tests selftests: riscv: Support xtheadvector in vector tests Heiko Stuebner (1): RISC-V: define the elements of the VCSR vector CSR Documentation/arch/riscv/hwprobe.rst | 10 + Documentation/devicetree/bindings/riscv/cpus.yaml | 19 ++ .../devicetree/bindings/riscv/extensions.yaml | 10 + arch/riscv/Kconfig.vendor | 26 ++ arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi | 3 +- arch/riscv/include/asm/cpufeature.h | 2 + arch/riscv/include/asm/csr.h | 15 + arch/riscv/include/asm/hwprobe.h | 3 +- arch/riscv/include/asm/switch_to.h | 2 +- arch/riscv/include/asm/vector.h | 225 +++++++++++---- arch/riscv/include/asm/vendor_extensions/thead.h | 42 +++ .../include/asm/vendor_extensions/thead_hwprobe.h | 19 ++ .../include/asm/vendor_extensions/vendor_hwprobe.h | 37 +++ arch/riscv/include/uapi/asm/hwprobe.h | 3 +- arch/riscv/include/uapi/asm/vendor/thead.h | 3 + arch/riscv/kernel/cpufeature.c | 52 +++- arch/riscv/kernel/kernel_mode_vector.c | 8 +- arch/riscv/kernel/process.c | 4 +- arch/riscv/kernel/signal.c | 6 +- arch/riscv/kernel/sys_hwprobe.c | 5 + arch/riscv/kernel/vector.c | 24 +- arch/riscv/kernel/vendor_extensions.c | 10 + arch/riscv/kernel/vendor_extensions/Makefile | 2 + arch/riscv/kernel/vendor_extensions/thead.c | 18 ++ .../riscv/kernel/vendor_extensions/thead_hwprobe.c | 19 ++ tools/testing/selftests/riscv/vector/.gitignore | 3 +- tools/testing/selftests/riscv/vector/Makefile | 17 +- .../selftests/riscv/vector/v_exec_initval_nolibc.c | 94 +++++++ tools/testing/selftests/riscv/vector/v_helpers.c | 68 +++++ tools/testing/selftests/riscv/vector/v_helpers.h | 8 + tools/testing/selftests/riscv/vector/v_initval.c | 22 ++ .../selftests/riscv/vector/v_initval_nolibc.c | 68 ----- .../selftests/riscv/vector/vstate_exec_nolibc.c | 20 +- .../testing/selftests/riscv/vector/vstate_prctl.c | 305 +++++++++++++-------- 34 files changed, 901 insertions(+), 271 deletions(-) --- base-commit: 7c08a2615f149f64fb1bb4660997e152fb3a11a7 change-id: 20240530-xtheadvector-833d3d17b423 -- - Charlie

8 months, 1 week

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