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

[PATCH v3 0/4] selftests/resctrl: Enable MBM and MBA tests on AMD

by Babu Moger

The MBM (Memory Bandwidth Monitoring) and MBA (Memory Bandwidth Allocation) features are not enabled for AMD systems. The reason was lack of perf counters to compare the resctrl test results. Starting with the commit 25e56847821f ("perf/x86/amd/uncore: Add memory controller support"), AMD now supports the UMC (Unified Memory Controller) perf events. These events can be used to compare the test results. This series adds the support to detect the UMC events and enable MBM/MBA tests for AMD systems. v3: Note: Based the series on top of latest kselftests/master 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 (tag: v6.10-rc1). Also applied the patches from the series https://lore.kernel.org/lkml/20240531131142.1716-1-ilpo.jarvinen@linux.inte… Separated the fix patch. Renamed the imc to just mc to make it generic. Changed the search string "uncore_imc_" and "amd_umc_" Changes related rebase to latest kselftest tree. v2: Changes. a. Rebased on top of tip/master (Apr 25, 2024) b. Addressed Ilpo comments except the one about close call. It seems more clear to keep READ and WRITE separate. https://lore.kernel.org/lkml/8e4badb7-6cc5-61f1-e041-d902209a90d5@linux.int… c. Used ksft_perror call when applicable. d. Added vendor check for non contiguous CBM check. v1: https://lore.kernel.org/lkml/cover.1708637563.git.babu.moger@amd.com/ Babu Moger (4): selftests/resctrl: Rename variables and functions to generic names selftests/resctrl: Pass sysfs controller name of the vendor selftests/resctrl: Add support for MBM and MBA tests on AMD selftests/resctrl: Enable MBA/MBA tests on AMD tools/testing/selftests/resctrl/mba_test.c | 25 +- tools/testing/selftests/resctrl/mbm_test.c | 23 +- tools/testing/selftests/resctrl/resctrl.h | 2 +- tools/testing/selftests/resctrl/resctrl_val.c | 305 ++++++++++-------- tools/testing/selftests/resctrl/resctrlfs.c | 2 +- 5 files changed, 191 insertions(+), 166 deletions(-) -- 2.34.1

15 minutes

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[PATCH 0/2] KVM: arm64: selftests: Cover ID_AA64ISAR3_EL1 in set_id_regs

by Mark Brown

The set_id_regs selftest lacks coverag for ID_AA64ISR3_EL1 which has several features exposed to KVM guests in it. Add coverage, and while we're here adjust the test to improve maintainability a bit. The test will fail without the recently applied change adding FEAT_LSFE: https://lore.kernel.org/r/175829303126.1764550.939188785634158487.b4-ty@ker… Signed-off-by: Mark Brown <broonie(a)kernel.org> --- Mark Brown (2): KVM: arm64: selftests: Remove a duplicate register listing in set_id_regs KVM: arm64: selftests: Cover ID_AA64ISAR3_EL1 in set_id_regs tools/testing/selftests/kvm/arm64/set_id_regs.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) --- base-commit: 5db15c998c390efbe5c82f6cda77cb896a3a6a3e change-id: 20250919-kvm-arm64-id-aa64isar3-el1-f0bd8ab3d36b Best regards, -- Mark Brown <broonie(a)kernel.org>

24 minutes

4
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[PATCH v3 0/5] tracing: fprobe: list-style filters,

by Ryan Chung

This series aims to extend fprobe with list-style filters and a clear entry/exist qualifier. Users can now specify a comma-separated symbol list with ! exclusions, and use a spec-level suffix to select probe type: - funcA*, !funcAB, funcC -> entry probes - funcA*, !funcAB, funcC:entry -> explicit entry - funcA*, !funcAB, funcC:exit -> return/exit across the whole list For compatibility, %return remains supported for single, literal symbols. When a list or wildcard is used, an explicit [GROUP/EVENT is required and autogeneration is disabled. Autogen names are kept for single-symbol specs, with wildcard sanitization. For list/wildcard forms we set ctx->funcname = NULL so BTF lookups are not attempted. The series moves parsing to the parse path, documents the new syntax, and adds selftests that accept valid list cases and reject empty tokens, stray commas, and %return mixed with lists or wildcards. Selftests also verify enable/disable flow and that entry+exit on the same set do not double-count attached functions. Help wanted: This is my first time contributing ftrace selftests. I would appreciate comments and recommendations on test structure and coverage. Basic coverage is included, but this likely needs broader testing across architectures. Feedback and additional test ideas are welcome. Changes since v2: - Introduce spec-level: :entry/:exit; reject %return with lists/wildcards - Require explict [GROUP/]EVENT for list/wildcard; keep autogen only for single literal. - Sanitize autogen names for single-symbol wildcards - Set ctx->funcname = NULL for list/wildcard to bypass BTF - Move list parsing out of __register_trace_fprobe() and into the parse path - Update docs and tracefs README and add dynevent selftests for accept/reject and enable/disable flow Link: https://lore.kernel.org/lkml/20250904103219.f4937968362bfff1ecd3f004@kernel… Ryan Chung (5): docs: tracing: fprobe: document list filters and :entry/:exit tracing: fprobe: require explicit [GROUP/]EVENT for list/wildcard tracing: fprobe: support comma-separated symbols and :entry/:exit selftests/ftrace: dynevent: add reject cases for list/:entry/:exit selftests/ftrace: dynevent: add reject cases Documentation/trace/fprobetrace.rst | 27 +- kernel/trace/trace.c | 3 +- kernel/trace/trace_fprobe.c | 247 ++++++++++++++---- .../test.d/dynevent/add_remove_fprobe.tc | 121 +++++++++ .../test.d/dynevent/fprobe_syntax_errors.tc | 13 + 5 files changed, 349 insertions(+), 62 deletions(-) -- 2.43.0

43 minutes

3
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[PATCH net-next] selftests: net: check jq command is supported

by Wang Liang

The jq command is used in vlan_bridge_binding.sh, if it is not supported, the test will spam the following log. # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # ./vlan_bridge_binding.sh: line 51: jq: command not found # TEST: Test bridge_binding on->off when lower down [FAIL] # Got operstate of , expected 0 The rtnetlink.sh has the same problem. It makes sense to check if jq is installed before running these tests. After this patch, the vlan_bridge_binding.sh skipped if jq is not supported: # timeout set to 3600 # selftests: net: vlan_bridge_binding.sh # TEST: jq not installed [SKIP] Signed-off-by: Wang Liang <wangliang74(a)huawei.com> --- tools/testing/selftests/net/rtnetlink.sh | 2 ++ tools/testing/selftests/net/vlan_bridge_binding.sh | 2 ++ 2 files changed, 4 insertions(+) diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh index dbf77513f617..163a084d525d 100755 --- a/tools/testing/selftests/net/rtnetlink.sh +++ b/tools/testing/selftests/net/rtnetlink.sh @@ -1466,6 +1466,8 @@ usage: ${0##*/} OPTS EOF } +require_command jq + #check for needed privileges if [ "$(id -u)" -ne 0 ];then end_test "SKIP: Need root privileges" diff --git a/tools/testing/selftests/net/vlan_bridge_binding.sh b/tools/testing/selftests/net/vlan_bridge_binding.sh index db481af9b6b3..e8c02c64e03a 100755 --- a/tools/testing/selftests/net/vlan_bridge_binding.sh +++ b/tools/testing/selftests/net/vlan_bridge_binding.sh @@ -249,6 +249,8 @@ test_binding_toggle_off_when_upper_down() do_test_binding_off : "on->off when upper down" } +require_command jq + trap defer_scopes_cleanup EXIT setup_prepare tests_run -- 2.34.1

57 minutes

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[PATCH v4 net-next 00/13] AccECN protocol case handling series

by chia-yu.chang＠nokia-bell-labs.com

From: Chia-Yu Chang <chia-yu.chang(a)nokia-bell-labs.com> Hello, Plesae find the v4 AccECN case handling patch series, which covers several excpetional case handling of Accurate ECN spec (RFC9768), adds new identifiers to be used by CC modules, adds ecn_delta into rate_sample, and keeps the ACE counter for computation, etc. This patch series is part of the full AccECN patch series, which is available at https://github.com/L4STeam/linux-net-next/commits/upstream_l4steam/ Best regards, Chia-Yu --- v4: - Add previous #13 in v2 back after dicussion with the RFC author. - Add TCP_ACCECN_OPTION_PERSIST to tcp_ecn_option sysctl to ignore AccECN fallback policy on sending AccECN option. v3: - Add additional min() check if pkts_acked_ewma is not initialized in #1. - Change TCP_CONG_WANTS_ECT_1 into individual flag add helper function INET_ECN_xmit_wants_ect_1() in #3. - Add empty line between variable declarations and code in #4. - Update commit message to fix old AccECN commits in #5. - Remove unnecessary brackets in #10. - Move patch #3 in v2 to a later Prague patch serise and remove patch #13 in v2. --- Chia-Yu Chang (11): tcp: L4S ECT(1) identifier and NEEDS_ACCECN for CC modules tcp: disable RFC3168 fallback identifier for CC modules tcp: accecn: handle unexpected AccECN negotiation feedback tcp: accecn: retransmit downgraded SYN in AccECN negotiation tcp: move increment of num_retrans tcp: accecn: retransmit SYN/ACK without AccECN option or non-AccECN SYN/ACK tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion tcp: accecn: fallback outgoing half link to non-AccECN tcp: accecn: verify ACE counter in 1st ACK after AccECN negotiation tcp: accecn: detect loss ACK w/ AccECN option and add TCP_ACCECN_OPTION_PERSIST tcp: accecn: enable AccECN Ilpo Järvinen (2): tcp: try to avoid safer when ACKs are thinned gro: flushing when CWR is set negatively affects AccECN Documentation/networking/ip-sysctl.rst | 2 + .../networking/net_cachelines/tcp_sock.rst | 1 + include/linux/tcp.h | 4 +- include/net/inet_ecn.h | 20 +++- include/net/tcp.h | 32 ++++++- include/net/tcp_ecn.h | 92 ++++++++++++++----- net/ipv4/sysctl_net_ipv4.c | 4 +- net/ipv4/tcp.c | 2 + net/ipv4/tcp_cong.c | 10 +- net/ipv4/tcp_input.c | 58 ++++++++++-- net/ipv4/tcp_minisocks.c | 40 +++++--- net/ipv4/tcp_offload.c | 3 +- net/ipv4/tcp_output.c | 42 ++++++--- 13 files changed, 240 insertions(+), 70 deletions(-) -- 2.34.1

58 minutes

3
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[PATCH] selftests: livepatch: use canonical ftrace path

by Fushuai Wang

Since v4.1 kernel, a new interface for ftrace called "tracefs" was introduced, which is usually mounted in /sys/kernel/tracing. Therefore, tracing files can now be accessed via either the legacy path /sys/kernel/debug/tracing or the newer path /sys/kernel/tracing. Signed-off-by: Fushuai Wang <wangfushuai(a)baidu.com> --- tools/testing/selftests/livepatch/functions.sh | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh index 46991a029f7c..8ec0cb64ad94 100644 --- a/tools/testing/selftests/livepatch/functions.sh +++ b/tools/testing/selftests/livepatch/functions.sh @@ -10,7 +10,11 @@ SYSFS_KERNEL_DIR="/sys/kernel" SYSFS_KLP_DIR="$SYSFS_KERNEL_DIR/livepatch" SYSFS_DEBUG_DIR="$SYSFS_KERNEL_DIR/debug" SYSFS_KPROBES_DIR="$SYSFS_DEBUG_DIR/kprobes" -SYSFS_TRACING_DIR="$SYSFS_DEBUG_DIR/tracing" +if [[ -e /sys/kernel/tracing/trace ]]; then + SYSFS_TRACING_DIR="$SYSFS_KERNEL_DIR/tracing" +else + SYSFS_TRACING_DIR="$SYSFS_DEBUG_DIR/tracing" +fi # Kselftest framework requirement - SKIP code is 4 ksft_skip=4 -- 2.36.1

3 hours, 46 minutes

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[PATCH] selftests/run_kselftest.sh: Add --error-on-fail flag

by Brendan Jackman

Parsing KTAP is quite an inconvenience, but most of the time the thing you really want to know is "did anything fail"? Let's give the user the ability to get this information without needing to parse anything. Because of the use of subshells and namespaces, this needs to be communicated via a file. Just write arbitrary data into the file and treat non-emppty content as a signal that something failed. Signed-off-by: Brendan Jackman <jackmanb(a)google.com> --- tools/testing/selftests/kselftest/runner.sh | 14 ++++++++++---- tools/testing/selftests/run_kselftest.sh | 14 ++++++++++++++ 2 files changed, 24 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/kselftest/runner.sh b/tools/testing/selftests/kselftest/runner.sh index 2c3c58e65a419f5ee8d7dc51a37671237a07fa0b..fd1e0f9b1cef48c5df1afaaedc0c97bee1c12dc5 100644 --- a/tools/testing/selftests/kselftest/runner.sh +++ b/tools/testing/selftests/kselftest/runner.sh @@ -44,6 +44,12 @@ tap_timeout() fi } +report_failure() +{ + echo "not ok $*" >> "$kselftest_failures_file" + echo "$*" >> "$kselftest_failures_file" +} + run_one() { DIR="$1" @@ -105,7 +111,7 @@ run_one() echo "# $TEST_HDR_MSG" if [ ! -e "$TEST" ]; then echo "# Warning: file $TEST is missing!" - echo "not ok $test_num $TEST_HDR_MSG" + report_failure "$test_num $TEST_HDR_MSG" else if [ -x /usr/bin/stdbuf ]; then stdbuf="/usr/bin/stdbuf --output=L " @@ -123,7 +129,7 @@ run_one() interpreter=$(head -n 1 "$TEST" | cut -c 3-) cmd="$stdbuf $interpreter ./$BASENAME_TEST" else - echo "not ok $test_num $TEST_HDR_MSG" + report_failure "$test_num $TEST_HDR_MSG" return fi fi @@ -137,9 +143,9 @@ run_one() echo "ok $test_num $TEST_HDR_MSG # SKIP" elif [ $rc -eq $timeout_rc ]; then \ echo "#" - echo "not ok $test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds" + report_failure "$test_num $TEST_HDR_MSG # TIMEOUT $kselftest_timeout seconds" else - echo "not ok $test_num $TEST_HDR_MSG # exit=$rc" + report_failure "$test_num $TEST_HDR_MSG # exit=$rc" fi) cd - >/dev/null fi diff --git a/tools/testing/selftests/run_kselftest.sh b/tools/testing/selftests/run_kselftest.sh index 0443beacf3621ae36cb12ffd57f696ddef3526b5..c345f38ad424029bfe50d19b26bdd1d4bda29316 100755 --- a/tools/testing/selftests/run_kselftest.sh +++ b/tools/testing/selftests/run_kselftest.sh @@ -36,6 +36,7 @@ Usage: $0 [OPTIONS] -n | --netns Run each test in namespace -h | --help Show this usage info -o | --override-timeout Number of seconds after which we timeout + -e | --error-on-fail After finishing all tests, exit with code 1 if any failed. EOF exit $1 } @@ -44,6 +45,7 @@ COLLECTIONS="" TESTS="" dryrun="" kselftest_override_timeout="" +ERROR_ON_FAIL=false while true; do case "$1" in -s | --summary) @@ -71,6 +73,9 @@ while true; do -o | --override-timeout) kselftest_override_timeout="$2" shift 2 ;; + -e | --error-on-fail) + ERROR_ON_FAIL="true" + shift ;; -h | --help) usage 0 ;; "") @@ -105,9 +110,18 @@ if [ -n "$TESTS" ]; then available="$(echo "$valid" | sed -e 's/ /\n/g')" fi +kselftest_failures_file=$(mktemp --tmpdir kselftest-failures-XXXXXX) +export kselftest_failures_file + collections=$(echo "$available" | cut -d: -f1 | sort | uniq) for collection in $collections ; do [ -w /dev/kmsg ] && echo "kselftest: Running tests in $collection" >> /dev/kmsg tests=$(echo "$available" | grep "^$collection:" | cut -d: -f2) ($dryrun cd "$collection" && $dryrun run_many $tests) done + +failures="$(cat "$kselftest_failures_file")" +rm "$kselftest_failures_file" +if "$ERROR_ON_FAIL" && [ "$failures" ]; then + exit 1 +fi --- base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 change-id: 20251007-b4-ksft-error-on-fail-0c2cb3246041 Best regards, -- Brendan Jackman <jackmanb(a)google.com>

6 hours, 21 minutes

2
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[PATCH net v3] selftests: drv-net: update remaining Python init files

by Stanislav Fomichev

From: Jakub Kicinski <kuba(a)kernel.org> Convert remaining __init__ files similar to what we did in commit b615879dbfea ("selftests: drv-net: make linters happy with our imports") Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Signed-off-by: Stanislav Fomichev <sdf(a)fomichev.me> --- v3: - add my SoB (sending on behalf of Jakub) v2: - remove tool from imports in driver __init__s it's not actually used v1: https://lore.kernel.org/20251007144326.1763309-1-kuba@kernel.org CC: shuah(a)kernel.org CC: willemb(a)google.com CC: daniel.zahka(a)gmail.com CC: linux-kselftest(a)vger.kernel.org --- .../drivers/net/hw/lib/py/__init__.py | 40 ++++++++++++++----- .../selftests/drivers/net/lib/py/__init__.py | 4 +- .../testing/selftests/net/lib/py/__init__.py | 29 ++++++++++++-- 3 files changed, 57 insertions(+), 16 deletions(-) diff --git a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py index 0ceb297e7757..fb010a48a5a1 100644 --- a/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/hw/lib/py/__init__.py @@ -1,5 +1,13 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Driver test environment (hardware-only tests). +NetDrvEnv and NetDrvEpEnv are the main environment classes. +Former is for local host only tests, latter creates / connects +to a remote endpoint. See NIPA wiki for more information about +running and writing driver tests. +""" + import sys from pathlib import Path @@ -8,26 +16,36 @@ KSFT_DIR = (Path(__file__).parent / "../../../../..").resolve() try: sys.path.append(KSFT_DIR.as_posix()) - from net.lib.py import * - from drivers.net.lib.py import * - # Import one by one to avoid pylint false positives + from net.lib.py import NetNS, NetNSEnter, NetdevSimDev from net.lib.py import EthtoolFamily, NetdevFamily, NetshaperFamily, \ NlError, RtnlFamily, DevlinkFamily, PSPFamily from net.lib.py import CmdExitFailure - from net.lib.py import bkg, cmd, defer, ethtool, fd_read_timeout, ip, \ - rand_port, tool, wait_port_listen - from net.lib.py import fd_read_timeout + from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ + fd_read_timeout, ip, rand_port, wait_port_listen, wait_file from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ ksft_setup from net.lib.py import ksft_eq, ksft_ge, ksft_in, ksft_is, ksft_lt, \ ksft_ne, ksft_not_in, ksft_raises, ksft_true, ksft_gt, ksft_not_none - from net.lib.py import NetNSEnter - from drivers.net.lib.py import GenerateTraffic + from drivers.net.lib.py import GenerateTraffic, Remote from drivers.net.lib.py import NetDrvEnv, NetDrvEpEnv + + __all__ = ["NetNS", "NetNSEnter", "NetdevSimDev", + "EthtoolFamily", "NetdevFamily", "NetshaperFamily", + "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", + "CmdExitFailure", + "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", + "fd_read_timeout", "ip", "rand_port", + "wait_port_listen", "wait_file", + "KsftSkipEx", "KsftFailEx", "KsftXfailEx", + "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", + "ksft_setup", + "ksft_eq", "ksft_ge", "ksft_in", "ksft_is", "ksft_lt", + "ksft_ne", "ksft_not_in", "ksft_raises", "ksft_true", "ksft_gt", + "ksft_not_none", "ksft_not_none", + "NetDrvEnv", "NetDrvEpEnv", "GenerateTraffic", "Remote"] except ModuleNotFoundError as e: - ksft_pr("Failed importing `net` library from kernel sources") - ksft_pr(str(e)) - ktap_result(True, comment="SKIP") + print("Failed importing `net` library from kernel sources") + print(str(e)) sys.exit(4) diff --git a/tools/testing/selftests/drivers/net/lib/py/__init__.py b/tools/testing/selftests/drivers/net/lib/py/__init__.py index e6c070f32f51..b0c6300150fb 100644 --- a/tools/testing/selftests/drivers/net/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/lib/py/__init__.py @@ -22,7 +22,7 @@ KSFT_DIR = (Path(__file__).parent / "../../../..").resolve() NlError, RtnlFamily, DevlinkFamily, PSPFamily from net.lib.py import CmdExitFailure from net.lib.py import bkg, cmd, bpftool, bpftrace, defer, ethtool, \ - fd_read_timeout, ip, rand_port, tool, wait_port_listen, wait_file + fd_read_timeout, ip, rand_port, wait_port_listen, wait_file from net.lib.py import KsftSkipEx, KsftFailEx, KsftXfailEx from net.lib.py import ksft_disruptive, ksft_exit, ksft_pr, ksft_run, \ ksft_setup @@ -34,7 +34,7 @@ KSFT_DIR = (Path(__file__).parent / "../../../..").resolve() "NlError", "RtnlFamily", "DevlinkFamily", "PSPFamily", "CmdExitFailure", "bkg", "cmd", "bpftool", "bpftrace", "defer", "ethtool", - "fd_read_timeout", "ip", "rand_port", "tool", + "fd_read_timeout", "ip", "rand_port", "wait_port_listen", "wait_file", "KsftSkipEx", "KsftFailEx", "KsftXfailEx", "ksft_disruptive", "ksft_exit", "ksft_pr", "ksft_run", diff --git a/tools/testing/selftests/net/lib/py/__init__.py b/tools/testing/selftests/net/lib/py/__init__.py index 997b85cc216a..97b7cf2b20eb 100644 --- a/tools/testing/selftests/net/lib/py/__init__.py +++ b/tools/testing/selftests/net/lib/py/__init__.py @@ -1,9 +1,32 @@ # SPDX-License-Identifier: GPL-2.0 +""" +Python selftest helpers for netdev. +""" + from .consts import KSRC -from .ksft import * +from .ksft import KsftFailEx, KsftSkipEx, KsftXfailEx, ksft_pr, ksft_eq, \ + ksft_ne, ksft_true, ksft_not_none, ksft_in, ksft_not_in, ksft_is, \ + ksft_ge, ksft_gt, ksft_lt, ksft_raises, ksft_busy_wait, \ + ktap_result, ksft_disruptive, ksft_setup, ksft_run, ksft_exit from .netns import NetNS, NetNSEnter -from .nsim import * -from .utils import * +from .nsim import NetdevSim, NetdevSimDev +from .utils import CmdExitFailure, fd_read_timeout, cmd, bkg, defer, \ + bpftool, ip, ethtool, bpftrace, rand_port, wait_port_listen, wait_file from .ynl import NlError, YnlFamily, EthtoolFamily, NetdevFamily, RtnlFamily, RtnlAddrFamily from .ynl import NetshaperFamily, DevlinkFamily, PSPFamily + +__all__ = ["KSRC", + "KsftFailEx", "KsftSkipEx", "KsftXfailEx", "ksft_pr", "ksft_eq", + "ksft_ne", "ksft_true", "ksft_not_none", "ksft_in", "ksft_not_in", + "ksft_is", "ksft_ge", "ksft_gt", "ksft_lt", "ksft_raises", + "ksft_busy_wait", "ktap_result", "ksft_disruptive", "ksft_setup", + "ksft_run", "ksft_exit", + "NetNS", "NetNSEnter", + "CmdExitFailure", "fd_read_timeout", "cmd", "bkg", "defer", + "bpftool", "ip", "ethtool", "bpftrace", "rand_port", + "wait_port_listen", "wait_file", + "NetdevSim", "NetdevSimDev", + "NetshaperFamily", "DevlinkFamily", "PSPFamily", "NlError", + "YnlFamily", "EthtoolFamily", "NetdevFamily", "RtnlFamily", + "RtnlAddrFamily"] -- 2.51.0

8 hours, 22 minutes

2
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[PATCH bpf-next v2 0/3] Add overwrite mode for bpf ring buffer

by Xu Kuohai

When the bpf ring buffer is full, new events can not be recorded util the consumer consumes some events to free space. This may cause critical events to be discarded, such as in fault diagnostic, where recent events are more critical than older ones. So add ovewrite mode for bpf ring buffer. In this mode, the new event overwrites the oldest event when the buffer is full. v2: - remove libbpf changes (Andrii) - update overwrite benchmark v1: https://lore.kernel.org/bpf/20250804022101.2171981-1-xukuohai@huaweicloud.c… Xu Kuohai (3): bpf: Add overwrite mode for bpf ring buffer selftests/bpf: Add test for overwrite ring buffer selftests/bpf/benchs: Add producer and overwrite bench for ring buffer include/uapi/linux/bpf.h | 4 + kernel/bpf/ringbuf.c | 159 +++++++++++++++--- tools/include/uapi/linux/bpf.h | 4 + tools/testing/selftests/bpf/Makefile | 3 +- tools/testing/selftests/bpf/bench.c | 2 + .../selftests/bpf/benchs/bench_ringbufs.c | 95 ++++++++++- .../bpf/benchs/run_bench_ringbufs.sh | 4 + .../selftests/bpf/prog_tests/ringbuf.c | 74 ++++++++ .../selftests/bpf/progs/ringbuf_bench.c | 10 ++ .../bpf/progs/test_ringbuf_overwrite.c | 98 +++++++++++ 10 files changed, 418 insertions(+), 35 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/test_ringbuf_overwrite.c -- 2.43.0

8 hours, 45 minutes

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[linux-next20251003] tmp2 selftests resulting in Kernel OOPs

by Venkat Rao Bagalkote

Greetings!!! IBM CI has reported a kernel OOPs while running TPM2selftests on IBM Power11 system with linux-next20251002 kernel. Test Case: make run_tests TAP version 13 1..3 # timeout set to 600 # selftests: tpm2: test_smoke.sh # test_read_partial_overwrite (tpm2_tests.SmokeTest) ... ok # test_read_partial_resp (tpm2_tests.SmokeTest) ... ok # test_seal_with_auth (tpm2_tests.SmokeTest) ... ok # test_seal_with_policy (tpm2_tests.SmokeTest) ... ok # test_seal_with_too_long_auth (tpm2_tests.SmokeTest) ... ok # test_send_two_cmds (tpm2_tests.SmokeTest) ... ok # test_too_short_cmd (tpm2_tests.SmokeTest) ... ok # test_unseal_with_wrong_auth (tpm2_tests.SmokeTest) ... ok # test_unseal_with_wrong_policy (tpm2_tests.SmokeTest) ... ERROR # # ====================================================================== # ERROR: test_unseal_with_wrong_policy (tpm2_tests.SmokeTest) # ----------------------------------------------------- Traces: [ 452.604333] BUG: KASAN: slab-use-after-free in tpmrm_release+0x78/0xa8 [ 452.604345] Read of size 8 at addr c00000001c650000 by task python3/1856 [ 452.604353] [ 452.604358] CPU: 24 UID: 0 PID: 1856 Comm: python3 Kdump: loaded Not tainted 6.17.0-next-20251003 #1 VOLUNTARY [ 452.604364] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries [ 452.604368] Call Trace: [ 452.604370] [c0000000c1867840] [c00000000187ea4c] dump_stack_lvl+0x84/0xe8 (unreliable) [ 452.604380] [c0000000c1867870] [c000000000803754] print_address_description.constprop.0+0x11c/0x56c [ 452.604388] [c0000000c1867910] [c000000000803c84] print_report+0xe0/0x358 [ 452.604394] [c0000000c18679e0] [c000000000804124] kasan_report+0x128/0x1f4 [ 452.604400] [c0000000c1867af0] [c0000000008062b4] __asan_load8+0xa8/0xe0 [ 452.604406] [c0000000c1867b10] [c000000000f2ec18] tpmrm_release+0x78/0xa8 [ 452.604412] [c0000000c1867b40] [c0000000008b6a2c] __fput+0x21c/0x60c [ 452.604417] [c0000000c1867bc0] [c0000000008ada70] sys_close+0x74/0xd0 [ 452.604424] [c0000000c1867bf0] [c000000000039270] system_call_exception+0x1e0/0x460 [ 452.604431] [c0000000c1867e50] [c00000000000d05c] system_call_vectored_common+0x15c/0x2ec [ 452.604438] ---- interrupt: 3000 at 0x7fffb7534ab4 [ 452.604443] NIP: 00007fffb7534ab4 LR: 00007fffb7534ab4 CTR: 0000000000000000 [ 452.604446] REGS: c0000000c1867e80 TRAP: 3000 Not tainted (6.17.0-next-20251003) [ 452.604449] MSR: 800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE> CR: 44284422 XER: 00000000 [ 452.604466] IRQMASK: 0 [ 452.604466] GPR00: 0000000000000006 00007ffff65d76b0 00007fffb7c17700 0000000000000006 [ 452.604466] GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000000000004 [ 452.604466] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 452.604466] GPR12: 0000000000000000 00007fffb7e6b8e0 00000000000000a1 00007fffb67acec0 [ 452.604466] GPR16: 0000000164032ad0 00007fffb67aceb0 00007fffb76f6a90 0000000000000000 [ 452.604466] GPR20: 00007fffb6f21850 0000000000000000 00007fffb71062c0 0000000164034490 [ 452.604466] GPR24: 00007fffb6f2fea0 00007fffb67acea8 0000000164032b18 00007fffb7c45b32 [ 452.604466] GPR28: 00007fffb7c678e0 00007fffb67aceb8 0000000000000006 0000000164034490 [ 452.604510] NIP [00007fffb7534ab4] 0x7fffb7534ab4 [ 452.604513] LR [00007fffb7534ab4] 0x7fffb7534ab4 [ 452.604516] ---- interrupt: 3000 [ 452.604518] [ 452.604601] Allocated by task 1856: [ 452.604607] kasan_save_stack+0x34/0x64 [ 452.604614] kasan_save_track+0x2c/0x50 [ 452.604621] kasan_save_alloc_info+0x58/0x74 [ 452.604628] __kasan_kmalloc+0x12c/0x168 [ 452.604635] __kmalloc_cache_noprof+0x1d8/0x71c [ 452.604643] tpmrm_open+0x88/0x168 [ 452.604649] chrdev_open+0x1f4/0x484 [ 452.604656] do_dentry_open+0x578/0x9cc [ 452.604663] vfs_open+0x68/0x23c [ 452.604670] do_open+0x514/0x74c [ 452.604676] path_openat+0x16c/0x380 [ 452.604682] do_filp_open+0x104/0x230 [ 452.604689] do_sys_openat2+0xb8/0x154 [ 452.604696] sys_openat+0xcc/0x130 [ 452.604703] system_call_exception+0x1e0/0x460 [ 452.604710] system_call_vectored_common+0x15c/0x2ec [ 452.604718] [ 452.604722] Freed by task 1856: [ 452.604726] kasan_save_stack+0x34/0x64 [ 452.604733] kasan_save_track+0x2c/0x50 [ 452.604739] __kasan_save_free_info+0x64/0x110 [ 452.604747] __kasan_slab_free+0xb0/0x10c [ 452.604753] kfree+0x220/0x624 [ 452.604760] tpmrm_release+0x6c/0xa8 [ 452.604766] __fput+0x21c/0x60c [ 452.604772] sys_close+0x74/0xd0 [ 452.604779] system_call_exception+0x1e0/0x460 [ 452.604786] system_call_vectored_common+0x15c/0x2ec [ 452.604794] [ 452.604797] The buggy address belongs to the object at c00000001c650000 [ 452.604797] which belongs to the cache kmalloc-8k of size 8192 [ 452.604806] The buggy address is located 0 bytes inside of [ 452.604806] freed 8192-byte region [c00000001c650000, c00000001c652000) [ 452.604815] [ 452.604818] The buggy address belongs to the physical page: [ 452.604824] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xc00000001c644000 pfn:0x1c60 [ 452.604833] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 452.604840] flags: 0x3ffffe00000040(head|node=0|zone=0|lastcpupid=0x1fffff) [ 452.604849] page_type: f5(slab) [ 452.604856] raw: 003ffffe00000040 c000000007012300 5deadbeef0000122 0000000000000000 [ 452.604864] raw: c00000001c644000 000000008020001e 00000000f5000000 0000000000000000 [ 452.604872] head: 003ffffe00000040 c000000007012300 5deadbeef0000122 0000000000000000 [ 452.604879] head: c00000001c644000 000000008020001e 00000000f5000000 0000000000000000 [ 452.604887] head: 003ffffe00000003 c00c000000071801 00000000ffffffff 00000000ffffffff [ 452.604894] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 452.604900] page dumped because: kasan: bad access detected [ 452.604905] [ 452.604908] Memory state around the buggy address: [ 452.604914] c00000001c64ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 452.604920] c00000001c64ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 452.604927] >c00000001c650000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 452.604933] ^ [ 452.604937] c00000001c650080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 452.604944] c00000001c650100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 452.604950] ================================================================== [ 452.604955] Disabling lock debugging due to kernel taint [ 452.604961] Kernel attempted to read user page (770) - exploit attempt? (uid: 0) [ 452.604969] BUG: Kernel NULL pointer dereference on read at 0x00000770 [ 452.604975] Faulting instruction address: 0xc0000000002b2e0c [ 452.604982] Oops: Kernel access of bad area, sig: 11 [#1] [ 452.604987] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=8192 NUMA pSeries [ 452.604996] Modules linked in: nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat bonding nf_conntrack tls nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set nf_tables nfnetlink sunrpc pseries_rng vmx_crypto fuse ext4 crc16 mbcache jbd2 sd_mod sg ibmvscsi ibmveth scsi_transport_srp pseries_wdt [ 452.605073] CPU: 24 UID: 0 PID: 1856 Comm: python3 Kdump: loaded Tainted: G B 6.17.0-next-20251003 #1 VOLUNTARY [ 452.605084] Tainted: [B]=BAD_PAGE [ 452.605089] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries [ 452.605096] NIP: c0000000002b2e0c LR: c0000000002b2e08 CTR: 0000000000000000 [ 452.605103] REGS: c0000000c1867820 TRAP: 0300 Tainted: G B (6.17.0-next-20251003) [ 452.605110] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28284420 XER: 0000000d [ 452.605132] CFAR: c000000000807920 DAR: 0000000000000770 DSISR: 40000000 IRQMASK: 0 [ 452.605132] GPR00: c0000000002b2e08 c0000000c1867ac0 c00000000234a500 0000000000000001 [ 452.605132] GPR04: 0000000000000008 0000000000000000 c0000000002b2e08 0000000000000001 [ 452.605132] GPR08: 0000000000000020 0000000000000001 0000000000000001 a80e000000000000 [ 452.605132] GPR12: c00e0000009b1c8c c000000d0ddeb700 0000000000000000 0000000000000000 [ 452.605132] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 452.605132] GPR20: 0000000000000008 0000000000000000 c000000008202f00 c00000007b9ff620 [ 452.605132] GPR24: c00000008a76cb20 c00000008a76cb40 c00000008a76cb08 c000000002201e80 [ 452.605132] GPR28: c000000061569248 0000000000000770 c00000008a76cb00 0000000000000768 [ 452.605227] NIP [c0000000002b2e0c] up_read+0x50/0x17c [ 452.605237] LR [c0000000002b2e08] up_read+0x4c/0x17c [ 452.605245] Call Trace: [ 452.605249] [c0000000c1867ac0] [c0000000002b2e08] up_read+0x4c/0x17c (unreliable) [ 452.605261] [c0000000c1867b10] [c000000000f2ec28] tpmrm_release+0x88/0xa8 [ 452.605271] [c0000000c1867b40] [c0000000008b6a2c] __fput+0x21c/0x60c [ 452.605280] [c0000000c1867bc0] [c0000000008ada70] sys_close+0x74/0xd0 [ 452.605291] [c0000000c1867bf0] [c000000000039270] system_call_exception+0x1e0/0x460 [ 452.605301] [c0000000c1867e50] [c00000000000d05c] system_call_vectored_common+0x15c/0x2ec [ 452.605312] ---- interrupt: 3000 at 0x7fffb7534ab4 [ 452.605319] NIP: 00007fffb7534ab4 LR: 00007fffb7534ab4 CTR: 0000000000000000 [ 452.605326] REGS: c0000000c1867e80 TRAP: 3000 Tainted: G B (6.17.0-next-20251003) [ 452.605333] MSR: 800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE> CR: 44284422 XER: 00000000 [ 452.605362] IRQMASK: 0 [ 452.605362] GPR00: 0000000000000006 00007ffff65d76b0 00007fffb7c17700 0000000000000006 [ 452.605362] GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000000000004 [ 452.605362] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 452.605362] GPR12: 0000000000000000 00007fffb7e6b8e0 00000000000000a1 00007fffb67acec0 [ 452.605362] GPR16: 0000000164032ad0 00007fffb67aceb0 00007fffb76f6a90 0000000000000000 [ 452.605362] GPR20: 00007fffb6f21850 0000000000000000 00007fffb71062c0 0000000164034490 [ 452.605362] GPR24: 00007fffb6f2fea0 00007fffb67acea8 0000000164032b18 00007fffb7c45b32 [ 452.605362] GPR28: 00007fffb7c678e0 00007fffb67aceb8 0000000000000006 0000000164034490 [ 452.605450] NIP [00007fffb7534ab4] 0x7fffb7534ab4 [ 452.605456] LR [00007fffb7534ab4] 0x7fffb7534ab4 [ 452.605462] ---- interrupt: 3000 [ 452.605467] Code: fbc1fff0 7c7f1b78 f8010010 f821ffb1 e92d0c78 f9210028 39200000 3ba30008 38800008 7fa3eb78 48554af5 60000000 <ebdf0008> eb8d0908 7bc90764 fbc10020 [ 452.605501] ---[ end trace 0000000000000000 ]--- [ 452.613685] pstore: backend (nvram) writing error (-1) [ 452.613691] If you happen to fix this, please add below tag. Reported-by: Venkat Rao Bagalkote <venkat88(a)linux.ibm.com> Regards, Venkat.

12 hours, 21 minutes

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