February 2025 - Linux-kselftest-mirror

by Ujwal Kundur

Fix misspellings flagged by codespell. Signed-off-by: Ujwal Kundur <ujwal.kundur(a)gmail.com> --- tools/testing/selftests/mm/uffd-common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/mm/uffd-common.c b/tools/testing/selftests/mm/uffd-common.c index 717539eddf98..254409972ddb 100644 --- a/tools/testing/selftests/mm/uffd-common.c +++ b/tools/testing/selftests/mm/uffd-common.c @@ -323,7 +323,7 @@ int uffd_test_ctx_init(uint64_t features, const char **errmsg) ret = userfaultfd_open(&features); if (ret) { if (errmsg) - *errmsg = "possible lack of priviledge"; + *errmsg = "possible lack of privilege"; return ret; } @@ -348,7 +348,7 @@ int uffd_test_ctx_init(uint64_t features, const char **errmsg) /* * After initialization of area_src, we must explicitly release pages * for area_dst to make sure it's fully empty. Otherwise we could have - * some area_dst pages be errornously initialized with zero pages, + * some area_dst pages be erroneously initialized with zero pages, * hence we could hit memory corruption later in the test. * * One example is when THP is globally enabled, above allocate_area() -- 2.20.1

8 months, 1 week

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[PATCH] kunit: qemu_configs: sparc: use Zilog console

by Thomas Weißschuh

The driver for the 8250 console is not used, as no port is found. Instead the prom0 bootconsole is used the whole time. The prom driver translates '\n' to '\r\n' before handing of the message off to the firmware. The firmware performs the same translation again. In the final output produced by QEMU each line ends with '\r\r\n'. This breaks the kunit parser, which can only handle '\r\n' and '\n'. Use the Zilog console instead. It works correctly, is the one documented by the QEMU manual and also saves a bit of codesize: Before=4051011, After=4023326, chg -0.68% Observed on QEMU 9.2.0. Fixes: 87c9c1631788 ("kunit: tool: add support for QEMU") Signed-off-by: Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> --- tools/testing/kunit/qemu_configs/sparc.py | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/testing/kunit/qemu_configs/sparc.py b/tools/testing/kunit/qemu_configs/sparc.py index e975c4331a7c2a74f8ade61c3f31ff0d37314545..256d9573b44646533d1a6f768976628adc87921e 100644 --- a/tools/testing/kunit/qemu_configs/sparc.py +++ b/tools/testing/kunit/qemu_configs/sparc.py @@ -2,8 +2,9 @@ from ..qemu_config import QemuArchParams QEMU_ARCH = QemuArchParams(linux_arch='sparc', kconfig=''' -CONFIG_SERIAL_8250=y -CONFIG_SERIAL_8250_CONSOLE=y''', +CONFIG_SERIAL_SUNZILOG=y +CONFIG_SERIAL_SUNZILOG_CONSOLE=y +''', qemu_arch='sparc', kernel_path='arch/sparc/boot/zImage', kernel_command_line='console=ttyS0 mem=256M', --- base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b change-id: 20250214-kunit-qemu-sparc-console-73ece282d867 Best regards, -- Thomas Weißschuh <thomas.weissschuh(a)linutronix.de>

8 months, 1 week

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[PATCH bpf-next v3 0/3] bpf: Fix array bounds error with may_goto and add selftest

by Jiayuan Chen

Syzbot caught an array out-of-bounds bug [1]. It turns out that when the BPF program runs through do_misc_fixups(), it allocates an extra 8 bytes on the call stack, which eventually causes stack_depth to exceed 512. I was able to reproduce this issue probabilistically by enabling CONFIG_UBSAN=y and disabling CONFIG_BPF_JIT_ALWAYS_ON with the selfttest I provide in second patch(although it doesn't happen every time - I didn't dig deeper into why UBSAN behaves this way). Furthermore, if I set /proc/sys/net/core/bpf_jit_enable to 0 to disable the jit, a panic occurs, and the reason is the same, that bpf_func is assigned an incorrect address. [---[ end trace ]--- [Oops: general protection fault, probably for non-canonical address 0x100f0e0e0d090808: 0000 [#1] PREEMPT SMP NOPTI [Tainted: [W]=WARN, [O]=OOT_MODULE [RIP: 0010:bpf_test_run+0x1d2/0x360 [RSP: 0018:ffffafc7955178a0 EFLAGS: 00010246 [RAX: 100f0e0e0d090808 RBX: ffff8e9fdb2c4100 RCX: 0000000000000018 [RDX: 00000000002b5b18 RSI: ffffafc780497048 RDI: ffff8ea04d601700 [RBP: ffffafc780497000 R08: ffffafc795517a0c R09: 0000000000000000 [R10: 0000000000000000 R11: fefefefefefefeff R12: ffff8ea04d601700 [R13: ffffafc795517928 R14: ffffafc795517928 R15: 0000000000000000 [CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [CR2: 00007f181c064648 CR3: 00000001aa2be003 CR4: 0000000000770ef0 [DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [PKRU: 55555554 [Call Trace: [ <TASK> [ ? die_addr+0x36/0x90 [ ? exc_general_protection+0x237/0x430 [ ? asm_exc_general_protection+0x26/0x30 [ ? bpf_test_run+0x1d2/0x360 [ ? bpf_test_run+0x10d/0x360 [ ? __link_object+0x12a/0x1e0 [ ? slab_build_skb+0x23/0x130 [ ? kmem_cache_alloc_noprof+0x2ea/0x3f0 [ ? sk_prot_alloc+0xc2/0x120 [ bpf_prog_test_run_skb+0x21b/0x590 [ __sys_bpf+0x340/0xa80 [ __x64_sys_bpf+0x1e/0x30 --- v2 -> v3: Optimized some code naming and conditional judgment logic. https://lore.kernel.org/bpf/20250213131214.164982-1-mrpre@163.com/T/ v1 -> v2: Directly reject loading programs with a stack size greater than 512 when jit disabled.(Suggested by Alexei Starovoitov) https://lore.kernel.org/bpf/20250212135251.85487-1-mrpre@163.com/T/ Jiayuan Chen (3): bpf: Fix array bounds error with may_goto selftests/bpf: Introduce __load_if_JITed annotation for tests selftests/bpf: Add selftest for may_goto kernel/bpf/core.c | 19 +++++-- kernel/bpf/verifier.c | 7 +++ tools/testing/selftests/bpf/progs/bpf_misc.h | 2 + .../selftests/bpf/progs/verifier_stack_ptr.c | 52 +++++++++++++++++++ tools/testing/selftests/bpf/test_loader.c | 26 ++++++++++ 5 files changed, 102 insertions(+), 4 deletions(-) -- 2.47.1

8 months, 1 week

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[PATCH] selftests: mptcp: connect: Use more formal wording in error message

by Marcelo Moreira

Update error message in mptcp_connect.sh to use a more formal and consistent wording. The phrase "not able to" was replaced with "Unable to" for better clarity. Signed-off-by: Marcelo Moreira <marcelomoreira1905(a)gmail.com> --- tools/testing/selftests/net/mptcp/mptcp_connect.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/testing/selftests/net/mptcp/mptcp_connect.sh index 5e3c56253274..bdc9c22af6be 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_connect.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh @@ -261,8 +261,8 @@ check_mptcp_disabled() # mainly to cover more code if ! ip netns exec ${disabled_ns} sysctl net.mptcp >/dev/null; then - mptcp_lib_pr_fail "not able to list net.mptcp sysctl knobs" - mptcp_lib_result_fail "not able to list net.mptcp sysctl knobs" + mptcp_lib_pr_fail "Unable to list net.mptcp sysctl knobs" + mptcp_lib_result_fail "Unable to list net.mptcp sysctl knobs" ret=${KSFT_FAIL} return 1 fi -- 2.48.1

8 months, 1 week

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[PATCH] Adds colors to kselftest output

by Marcelo Moreira

This commit improves the readability of kselftest results by adding ANSI color codes to the [ OK ] and FAIL messages. Signed-off-by: Marcelo Moreira <marcelomoreira1905(a)gmail.com> --- tools/testing/selftests/net/mptcp/mptcp_lib.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/mptcp/mptcp_lib.sh b/tools/testing/selftests/net/mptcp/mptcp_lib.sh index 051e289d7967..7b55855ff788 100644 --- a/tools/testing/selftests/net/mptcp/mptcp_lib.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_lib.sh @@ -83,7 +83,7 @@ mptcp_lib_print_err() { # shellcheck disable=SC2120 # parameters are optional mptcp_lib_pr_ok() { - mptcp_lib_print_ok "[ OK ]${1:+ ${*}}" + mptcp_lib_print_ok "\033[32m[ OK ]\033[0m${1:+ ${*}}" } mptcp_lib_pr_skip() { @@ -97,7 +97,7 @@ mptcp_lib_pr_fail() { title="IGNO" cmt=" (flaky)" else - title="FAIL" + title="\033[31mFAIL\033[0m" fi mptcp_lib_print_err "[${title}]${cmt}${1:+ ${*}}" -- 2.48.1

8 months, 1 week

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[PATCH v3 0/2] printf: convert self-test to KUnit

by Tamir Duberstein

This is one of just 3 remaining "Test Module" kselftests (the others being bitmap and scanf), the rest having been converted to KUnit. I tested this using: $ tools/testing/kunit/kunit.py run --arch arm64 --make_options LLVM=1 printf I have also sent out a series converting scanf[0]. Link: https://lore.kernel.org/all/20250204-scanf-kunit-convert-v3-0-386d7c3ee714@… [0] Signed-off-by: Tamir Duberstein <tamird(a)gmail.com> --- Changes in v3: - Remove extraneous trailing newlines from failure messages. - Replace `pr_warn` with `kunit_warn`. - Drop arch changes. - Remove KUnit boilerplate from CONFIG_PRINTF_KUNIT_TEST help text. - Restore `total_tests` counting. - Remove tc_fail macro in last patch. - Link to v2: https://lore.kernel.org/r/20250207-printf-kunit-convert-v2-0-057b23860823@g… Changes in v2: - Incorporate code review from prior work[0] by Arpitha Raghunandan. - Link to v1: https://lore.kernel.org/r/20250204-printf-kunit-convert-v1-0-ecf1b846a4de@g… Link: https://lore.kernel.org/lkml/20200817043028.76502-1-98.arpi@gmail.com/t/#u [0] --- Tamir Duberstein (2): printf: convert self-test to KUnit printf: break kunit into test cases Documentation/core-api/printk-formats.rst | 2 +- MAINTAINERS | 2 +- lib/Kconfig.debug | 12 +- lib/Makefile | 2 +- lib/{test_printf.c => printf_kunit.c} | 429 +++++++++++++----------------- tools/testing/selftests/lib/config | 1 - tools/testing/selftests/lib/printf.sh | 4 - 7 files changed, 192 insertions(+), 260 deletions(-) --- base-commit: a64dcfb451e254085a7daee5fe51bf22959d52d3 change-id: 20250131-printf-kunit-convert-fd4012aa2ec6 Best regards, -- Tamir Duberstein <tamird(a)gmail.com>

8 months, 1 week

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[PATCH 1/2] misc: pci_endpoint_test: Give disabled BARs a distinct error code

by Niklas Cassel

The current code returns -ENOMEM if test->bar[barno] is NULL. There can be two reasons why test->bar[barno] is NULL: 1) The pci_ioremap_bar() call in pci_endpoint_test_probe() failed. 2) The BAR was skipped, because it is disabled by the endpoint. Many PCI endpoint controller drivers will disable all BARs in their init function. A disabled BAR will have a size of 0. A PCI endpoint function driver will be able to enable any BAR that is not marked as BAR_RESERVED (which means that the BAR should not be touched by the EPF driver). Thus, perform check if the size is 0, before checking if test->bar[barno] is NULL, such that we can return different errors. This will allow the selftests to return SKIP instead of FAIL for disabled BARs. Signed-off-by: Niklas Cassel <cassel(a)kernel.org> --- Hello PCI maintainers. This patch might give a trivial conflict with: https://lore.kernel.org/linux-pci/20250123095906.3578241-2-cassel@kernel.or… because the context lines (lines that haven't been changed) might be different. If there is a conflict, simply look at this patch by itself, and resolution should be trivial. drivers/misc/pci_endpoint_test.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index d5ac71a49386..b95980b29eb9 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -292,11 +292,13 @@ static int pci_endpoint_test_bar(struct pci_endpoint_test *test, void *read_buf __free(kfree) = NULL; struct pci_dev *pdev = test->pdev; + bar_size = pci_resource_len(pdev, barno); + if (!bar_size) + return -ENODATA; + if (!test->bar[barno]) return -ENOMEM; - bar_size = pci_resource_len(pdev, barno); - if (barno == test->test_reg_bar) bar_size = 0x4; -- 2.48.1

8 months, 1 week

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[PATCH net-next v2 5/5] selftests: test_vxlan_fdb_changelink: Add a test for MC remote change

by Petr Machata

Changes to MC remote need to be reflected in actual group memberships. Add a test to verify that it is the case. Signed-off-by: Petr Machata <petrm(a)nvidia.com> Reviewed-by: Ido Schimmel <idosch(a)nvidia.com> Reviewed-by: Nikolay Aleksandrov <razor(a)blackwall.org> --- Notes: CC: Simon Horman <horms(a)kernel.org> CC: Shuah Khan <shuah(a)kernel.org> CC: linux-kselftest(a)vger.kernel.org .../net/test_vxlan_fdb_changelink.sh | 76 +++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh b/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh index 6f2bca4b346c..062f957950af 100755 --- a/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh +++ b/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh @@ -3,6 +3,7 @@ ALL_TESTS=" test_set_remote + test_change_mc_remote " source lib.sh @@ -31,6 +32,81 @@ test_set_remote() log_test 'FDB default-remote handling across "ip link set"' } +fmt_remote() +{ + local addr=$1; shift + + if [[ $addr == 224.* ]]; then + echo "group $addr" + else + echo "remote $addr" + fi +} + +change_remote() +{ + local remote=$1; shift + + ip link set dev vx type vxlan $(fmt_remote $remote) dev v1 +} + +check_membership() +{ + local check_vec=("$@") + + local memberships + memberships=$( + netstat -n --groups | + sed -n '/^v1\b/p' | + grep -o '[^ ]*$' + ) + check_err $? "Couldn't obtain group memberships" + + local item + for item in "${check_vec[@]}"; do + eval "local $item" + echo "$memberships" | grep -q "\b$group\b" + check_err_fail $fail $? "$group is_ex reported in IGMP query response" + done +} + +test_change_mc_remote() +{ + check_command netstat || return + + ip_link_add v1 up type veth peer name v2 + ip_link_set_up v2 + + RET=0 + + ip_link_add vx up type vxlan dstport 4789 \ + local 192.0.2.1 $(fmt_remote 224.1.1.1) dev v1 vni 1000 + + check_membership "group=224.1.1.1 fail=0" \ + "group=224.1.1.2 fail=1" \ + "group=224.1.1.3 fail=1" + + log_test "MC group report after VXLAN creation" + + RET=0 + + change_remote 224.1.1.2 + check_membership "group=224.1.1.1 fail=1" \ + "group=224.1.1.2 fail=0" \ + "group=224.1.1.3 fail=1" + + log_test "MC group report after changing VXLAN remote MC->MC" + + RET=0 + + change_remote 192.0.2.2 + check_membership "group=224.1.1.1 fail=1" \ + "group=224.1.1.2 fail=1" \ + "group=224.1.1.3 fail=1" + + log_test "MC group report after changing VXLAN remote MC->UC" +} + trap defer_scopes_cleanup EXIT tests_run -- 2.47.0

8 months, 1 week

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[PATCH net-next v2 4/5] selftests: test_vxlan_fdb_changelink: Convert to lib.sh

by Petr Machata

Instead of inlining equivalents, use lib.sh-provided primitives. Use defer to manage vx lifetime. This will make it easier to extend the test in the next patch. Signed-off-by: Petr Machata <petrm(a)nvidia.com> Reviewed-by: Ido Schimmel <idosch(a)nvidia.com> Reviewed-by: Nikolay Aleksandrov <razor(a)blackwall.org> --- Notes: CC: Simon Horman <horms(a)kernel.org> CC: Shuah Khan <shuah(a)kernel.org> CC: linux-kselftest(a)vger.kernel.org .../net/test_vxlan_fdb_changelink.sh | 39 ++++++++++++------- 1 file changed, 24 insertions(+), 15 deletions(-) diff --git a/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh b/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh index 2d442cdab11e..6f2bca4b346c 100755 --- a/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh +++ b/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh @@ -1,29 +1,38 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0 -# Check FDB default-remote handling across "ip link set". +ALL_TESTS=" + test_set_remote +" +source lib.sh check_remotes() { local what=$1; shift local N=$(bridge fdb sh dev vx | grep 00:00:00:00:00:00 | wc -l) - echo -ne "expected two remotes after $what\t" - if [[ $N != 2 ]]; then - echo "[FAIL]" - EXIT_STATUS=1 - else - echo "[ OK ]" - fi + ((N == 2)) + check_err $? "expected 2 remotes after $what, got $N" } -ip link add name vx up type vxlan id 2000 dstport 4789 -bridge fdb ap dev vx 00:00:00:00:00:00 dst 192.0.2.20 self permanent -bridge fdb ap dev vx 00:00:00:00:00:00 dst 192.0.2.30 self permanent -check_remotes "fdb append" +# Check FDB default-remote handling across "ip link set". +test_set_remote() +{ + RET=0 -ip link set dev vx type vxlan remote 192.0.2.30 -check_remotes "link set" + ip_link_add vx up type vxlan id 2000 dstport 4789 + bridge fdb ap dev vx 00:00:00:00:00:00 dst 192.0.2.20 self permanent + bridge fdb ap dev vx 00:00:00:00:00:00 dst 192.0.2.30 self permanent + check_remotes "fdb append" + + ip link set dev vx type vxlan remote 192.0.2.30 + check_remotes "link set" + + log_test 'FDB default-remote handling across "ip link set"' +} + +trap defer_scopes_cleanup EXIT + +tests_run -ip link del dev vx exit $EXIT_STATUS -- 2.47.0

8 months, 1 week

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[PATCH net-next v2 3/5] selftests: forwarding: lib: Move require_command to net, generalize

by Petr Machata

This helper could be useful to more than just forwarding tests. Move it upstairs and port over to log_test_skip(). Split the function into two parts: the bit that actually checks and reports skip, which is in a new function check_command(). And a bit that exits the test script if the check fails. This allows users consistent checking behavior while giving an option to bail out from a single test without bailing out of the whole script. Signed-off-by: Petr Machata <petrm(a)nvidia.com> Reviewed-by: Ido Schimmel <idosch(a)nvidia.com> Reviewed-by: Nikolay Aleksandrov <razor(a)blackwall.org> --- Notes: CC: Simon Horman <horms(a)kernel.org> CC: Shuah Khan <shuah(a)kernel.org> CC: linux-kselftest(a)vger.kernel.org tools/testing/selftests/net/forwarding/lib.sh | 10 ---------- tools/testing/selftests/net/lib.sh | 19 +++++++++++++++++++ 2 files changed, 19 insertions(+), 10 deletions(-) diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh index 8de80acf249e..508f3c700d71 100644 --- a/tools/testing/selftests/net/forwarding/lib.sh +++ b/tools/testing/selftests/net/forwarding/lib.sh @@ -291,16 +291,6 @@ if [[ "$CHECK_TC" = "yes" ]]; then check_tc_version fi -require_command() -{ - local cmd=$1; shift - - if [[ ! -x "$(command -v "$cmd")" ]]; then - echo "SKIP: $cmd not installed" - exit $ksft_skip - fi -} - # IPv6 support was added in v3.0 check_mtools_version() { diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh index 0bd9a038a1f0..975be4fdbcdb 100644 --- a/tools/testing/selftests/net/lib.sh +++ b/tools/testing/selftests/net/lib.sh @@ -450,6 +450,25 @@ kill_process() { kill $pid && wait $pid; } 2>/dev/null } +check_command() +{ + local cmd=$1; shift + + if [[ ! -x "$(command -v "$cmd")" ]]; then + log_test_skip "$cmd not installed" + return $EXIT_STATUS + fi +} + +require_command() +{ + local cmd=$1; shift + + if ! check_command "$cmd"; then + exit $EXIT_STATUS + fi +} + ip_link_add() { local name=$1; shift -- 2.47.0

8 months, 1 week

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Linux-kselftest-mirror February 2025