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

by Geliang Tang

As is described in the "How to use MPTCP?" section in MPTCP wiki [1]: "Your app can create sockets with IPPROTO_MPTCP as the proto: ( socket(AF_INET, SOCK_STREAM, IPPROTO_MPTCP); ). Legacy apps can be forced to create and use MPTCP sockets instead of TCP ones via the mptcpize command bundled with the mptcpd daemon." But the mptcpize (LD_PRELOAD technique) command has some limitations [2]: - it doesn't work if the application is not using libc (e.g. GoLang apps) - in some envs, it might not be easy to set env vars / change the way apps are launched, e.g. on Android - mptcpize needs to be launched with all apps that want MPTCP: we could have more control from BPF to enable MPTCP only for some apps or all the ones of a netns or a cgroup, etc. - it is not in BPF, we cannot talk about it at netdev conf. So this patchset attempts to use BPF to implement functions similer to mptcpize. The main idea is add a hook in sys_socket() to change the protocol id from IPPROTO_TCP (or 0) to IPPROTO_MPTCP. [1] https://github.com/multipath-tcp/mptcp_net-next/wiki [2] https://github.com/multipath-tcp/mptcp_net-next/issues/79 v5: - add bpf_mptcpify helper. v4: - use lsm_cgroup/socket_create v3: - patch 8: char cmd[128]; -> char cmd[256]; v2: - Fix build selftests errors reported by CI Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/79 Signed-off-by: Geliang Tang <geliang.tang(a)suse.com> --- include/linux/bpf.h | 1 + include/linux/lsm_hook_defs.h | 2 +- include/linux/security.h | 6 +- include/uapi/linux/bpf.h | 7 + kernel/bpf/bpf_lsm.c | 2 + net/mptcp/bpf.c | 20 +++ net/socket.c | 4 +- security/apparmor/lsm.c | 8 +- security/security.c | 2 +- security/selinux/hooks.c | 6 +- tools/include/uapi/linux/bpf.h | 7 + .../testing/selftests/bpf/prog_tests/mptcp.c | 128 ++++++++++++++++-- tools/testing/selftests/bpf/progs/mptcpify.c | 17 +++ 13 files changed, 187 insertions(+), 23 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/mptcpify.c diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 360433f14496..77cdbe21e5c1 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -2913,6 +2913,7 @@ extern const struct bpf_func_proto bpf_skc_to_tcp_request_sock_proto; extern const struct bpf_func_proto bpf_skc_to_udp6_sock_proto; extern const struct bpf_func_proto bpf_skc_to_unix_sock_proto; extern const struct bpf_func_proto bpf_skc_to_mptcp_sock_proto; +extern const struct bpf_func_proto bpf_mptcpify_proto; extern const struct bpf_func_proto bpf_copy_from_user_proto; extern const struct bpf_func_proto bpf_snprintf_btf_proto; extern const struct bpf_func_proto bpf_snprintf_proto; diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h index 7308a1a7599b..d475e6ab20ca 100644 --- a/include/linux/lsm_hook_defs.h +++ b/include/linux/lsm_hook_defs.h @@ -288,7 +288,7 @@ LSM_HOOK(int, 0, watch_key, struct key *key) LSM_HOOK(int, 0, unix_stream_connect, struct sock *sock, struct sock *other, struct sock *newsk) LSM_HOOK(int, 0, unix_may_send, struct socket *sock, struct socket *other) -LSM_HOOK(int, 0, socket_create, int family, int type, int protocol, int kern) +LSM_HOOK(int, 0, socket_create, int *family, int *type, int *protocol, int kern) LSM_HOOK(int, 0, socket_post_create, struct socket *sock, int family, int type, int protocol, int kern) LSM_HOOK(int, 0, socket_socketpair, struct socket *socka, struct socket *sockb) diff --git a/include/linux/security.h b/include/linux/security.h index 32828502f09e..a683c10d4071 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1416,7 +1416,7 @@ static inline int security_watch_key(struct key *key) int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk); int security_unix_may_send(struct socket *sock, struct socket *other); -int security_socket_create(int family, int type, int protocol, int kern); +int security_socket_create(int *family, int *type, int *protocol, int kern); int security_socket_post_create(struct socket *sock, int family, int type, int protocol, int kern); int security_socket_socketpair(struct socket *socka, struct socket *sockb); @@ -1481,8 +1481,8 @@ static inline int security_unix_may_send(struct socket *sock, return 0; } -static inline int security_socket_create(int family, int type, - int protocol, int kern) +static inline int security_socket_create(int *family, int *type, + int *protocol, int kern) { return 0; } diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 600d0caebbd8..265077883f18 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -5583,6 +5583,12 @@ union bpf_attr { * 0 on success. * * **-ENOENT** if the bpf_local_storage cannot be found. + * + * int bpf_mptcpify(int *family, int *type, int *protocol) + * Description + * Dynamically mptcpify a TCP socket as an MPTCP one. + * Return + * 0 on success. */ #define ___BPF_FUNC_MAPPER(FN, ctx...) \ FN(unspec, 0, ##ctx) \ @@ -5797,6 +5803,7 @@ union bpf_attr { FN(user_ringbuf_drain, 209, ##ctx) \ FN(cgrp_storage_get, 210, ##ctx) \ FN(cgrp_storage_delete, 211, ##ctx) \ + FN(mptcpify, 212, ##ctx) \ /* */ /* backwards-compatibility macros for users of __BPF_FUNC_MAPPER that don't diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c index e14c822f8911..8cfa6a44f8f2 100644 --- a/kernel/bpf/bpf_lsm.c +++ b/kernel/bpf/bpf_lsm.c @@ -248,6 +248,8 @@ bpf_lsm_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) prog->aux->attach_btf_id)) return &bpf_unlocked_sk_getsockopt_proto; return NULL; + case BPF_FUNC_mptcpify: + return &bpf_mptcpify_proto; #endif default: return tracing_prog_func_proto(func_id, prog); diff --git a/net/mptcp/bpf.c b/net/mptcp/bpf.c index 5a0a84ad94af..7207f60dad76 100644 --- a/net/mptcp/bpf.c +++ b/net/mptcp/bpf.c @@ -19,3 +19,23 @@ struct mptcp_sock *bpf_mptcp_sock_from_subflow(struct sock *sk) return NULL; } + +BPF_CALL_3(bpf_mptcpify, int *, family, int *, type, int *, protocol) +{ + if ((*family == AF_INET || *family == AF_INET6) && + *type == SOCK_STREAM && + (!*protocol || *protocol == IPPROTO_TCP)) { + *protocol = IPPROTO_MPTCP; + } + + return 0; +} + +const struct bpf_func_proto bpf_mptcpify_proto = { + .func = bpf_mptcpify, + .gpl_only = false, + .ret_type = RET_INTEGER, + .arg1_type = ARG_ANYTHING, + .arg2_type = ARG_ANYTHING, + .arg3_type = ARG_ANYTHING, +}; diff --git a/net/socket.c b/net/socket.c index 2b0e54b2405c..3957e2a865ef 100644 --- a/net/socket.c +++ b/net/socket.c @@ -1328,7 +1328,7 @@ int sock_create_lite(int family, int type, int protocol, struct socket **res) int err; struct socket *sock = NULL; - err = security_socket_create(family, type, protocol, 1); + err = security_socket_create(&family, &type, &protocol, 1); if (err) goto out; @@ -1488,7 +1488,7 @@ int __sock_create(struct net *net, int family, int type, int protocol, family = PF_PACKET; } - err = security_socket_create(family, type, protocol, kern); + err = security_socket_create(&family, &type, &protocol, kern); if (err) return err; diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c index c9463bd0307d..ae823b95d304 100644 --- a/security/apparmor/lsm.c +++ b/security/apparmor/lsm.c @@ -868,7 +868,7 @@ static void apparmor_sk_clone_security(const struct sock *sk, /** * apparmor_socket_create - check perms before creating a new socket */ -static int apparmor_socket_create(int family, int type, int protocol, int kern) +static int apparmor_socket_create(int *family, int *type, int *protocol, int kern) { struct aa_label *label; int error = 0; @@ -877,10 +877,10 @@ static int apparmor_socket_create(int family, int type, int protocol, int kern) label = begin_current_label_crit_section(); if (!(kern || unconfined(label))) - error = af_select(family, - create_perm(label, family, type, protocol), + error = af_select(*family, + create_perm(label, *family, *type, *protocol), aa_af_perm(label, OP_CREATE, AA_MAY_CREATE, - family, type, protocol)); + *family, *type, *protocol)); end_current_label_crit_section(label); return error; diff --git a/security/security.c b/security/security.c index b720424ca37d..bbebcddce420 100644 --- a/security/security.c +++ b/security/security.c @@ -4078,7 +4078,7 @@ EXPORT_SYMBOL(security_unix_may_send); * * Return: Returns 0 if permission is granted. */ -int security_socket_create(int family, int type, int protocol, int kern) +int security_socket_create(int *family, int *type, int *protocol, int kern) { return call_int_hook(socket_create, 0, family, type, protocol, kern); } diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index d06e350fedee..8c2303f052f5 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -4512,8 +4512,8 @@ static int sock_has_perm(struct sock *sk, u32 perms) &ad); } -static int selinux_socket_create(int family, int type, - int protocol, int kern) +static int selinux_socket_create(int *family, int *type, + int *protocol, int kern) { const struct task_security_struct *tsec = selinux_cred(current_cred()); u32 newsid; @@ -4523,7 +4523,7 @@ static int selinux_socket_create(int family, int type, if (kern) return 0; - secclass = socket_type_to_security_class(family, type, protocol); + secclass = socket_type_to_security_class(*family, *type, *protocol); rc = socket_sockcreate_sid(tsec, secclass, &newsid); if (rc) return rc; diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 600d0caebbd8..265077883f18 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -5583,6 +5583,12 @@ union bpf_attr { * 0 on success. * * **-ENOENT** if the bpf_local_storage cannot be found. + * + * int bpf_mptcpify(int *family, int *type, int *protocol) + * Description + * Dynamically mptcpify a TCP socket as an MPTCP one. + * Return + * 0 on success. */ #define ___BPF_FUNC_MAPPER(FN, ctx...) \ FN(unspec, 0, ##ctx) \ @@ -5797,6 +5803,7 @@ union bpf_attr { FN(user_ringbuf_drain, 209, ##ctx) \ FN(cgrp_storage_get, 210, ##ctx) \ FN(cgrp_storage_delete, 211, ##ctx) \ + FN(mptcpify, 212, ##ctx) \ /* */ /* backwards-compatibility macros for users of __BPF_FUNC_MAPPER that don't diff --git a/tools/testing/selftests/bpf/prog_tests/mptcp.c b/tools/testing/selftests/bpf/prog_tests/mptcp.c index cd0c42fff7c0..93767e441e17 100644 --- a/tools/testing/selftests/bpf/prog_tests/mptcp.c +++ b/tools/testing/selftests/bpf/prog_tests/mptcp.c @@ -6,8 +6,9 @@ #include "cgroup_helpers.h" #include "network_helpers.h" #include "mptcp_sock.skel.h" +#include "mptcpify.skel.h" -#define NS_TEST "mptcp_ns" +char NS_TEST[32]; #ifndef TCP_CA_NAME_MAX #define TCP_CA_NAME_MAX 16 @@ -22,6 +23,26 @@ struct mptcp_storage { char ca_name[TCP_CA_NAME_MAX]; }; +static struct nstoken *create_netns(void) +{ + srand(time(NULL)); + snprintf(NS_TEST, sizeof(NS_TEST), "mptcp_ns_%d", rand()); + SYS(fail, "ip netns add %s", NS_TEST); + SYS(fail, "ip -net %s link set dev lo up", NS_TEST); + + return open_netns(NS_TEST); +fail: + return NULL; +} + +static void cleanup_netns(struct nstoken *nstoken) +{ + if (nstoken) + close_netns(nstoken); + + SYS_NOFAIL("ip netns del %s &> /dev/null", NS_TEST); +} + static int verify_tsk(int map_fd, int client_fd) { int err, cfd = client_fd; @@ -147,11 +168,8 @@ static void test_base(void) if (!ASSERT_GE(cgroup_fd, 0, "test__join_cgroup")) return; - SYS(fail, "ip netns add %s", NS_TEST); - SYS(fail, "ip -net %s link set dev lo up", NS_TEST); - - nstoken = open_netns(NS_TEST); - if (!ASSERT_OK_PTR(nstoken, "open_netns")) + nstoken = create_netns(); + if (!ASSERT_OK_PTR(nstoken, "create_netns")) goto fail; /* without MPTCP */ @@ -174,11 +192,101 @@ static void test_base(void) close(server_fd); fail: - if (nstoken) - close_netns(nstoken); + cleanup_netns(nstoken); + + close(cgroup_fd); +} + +static void send_byte(int fd) +{ + char b = 0x55; + + ASSERT_EQ(write(fd, &b, sizeof(b)), 1, "send single byte"); +} + +static int verify_mptcpify(void) +{ + char cmd[256]; + int err = 0; + + snprintf(cmd, sizeof(cmd), + "ip netns exec %s ss -tOni | grep -q '%s'", + NS_TEST, "tcp-ulp-mptcp"); + if (!ASSERT_OK(system(cmd), "No tcp-ulp-mptcp found!")) + err++; + + snprintf(cmd, sizeof(cmd), + "ip netns exec %s nstat -asz %s | awk '%s' | grep -q '%s'", + NS_TEST, "MPTcpExtMPCapableSYNACKRX", + "NR==1 {next} {print $2}", "1"); + if (!ASSERT_OK(system(cmd), "No MPTcpExtMPCapableSYNACKRX found!")) + err++; + + return err; +} + +static int run_mptcpify(int cgroup_fd) +{ + int server_fd, client_fd, prog_fd, err = 0; + struct mptcpify *mptcpify_skel; + + mptcpify_skel = mptcpify__open_and_load(); + if (!ASSERT_OK_PTR(mptcpify_skel, "mptcpify__open_and_load")) + return -EIO; + + prog_fd = bpf_program__fd(mptcpify_skel->progs.mptcpify); + if (!ASSERT_GE(prog_fd, 0, "bpf_program__fd")) { + err = -EIO; + goto out; + } - SYS_NOFAIL("ip netns del " NS_TEST " &> /dev/null"); + err = bpf_prog_attach(prog_fd, cgroup_fd, BPF_LSM_CGROUP, 0); + if (!ASSERT_OK(err, "attach alloc_prog_fd")) { + err = -EIO; + goto out; + } + /* without MPTCP */ + server_fd = start_server(AF_INET, SOCK_STREAM, NULL, 0, 0); + if (!ASSERT_GE(server_fd, 0, "start_server")) { + err = -EIO; + goto out; + } + + client_fd = connect_to_fd(server_fd, 0); + if (!ASSERT_GE(client_fd, 0, "connect to fd")) { + err = -EIO; + goto close_server; + } + + send_byte(client_fd); + err += verify_mptcpify(); + + close(client_fd); +close_server: + close(server_fd); +out: + mptcpify__destroy(mptcpify_skel); + return err; +} + +static void test_mptcpify(void) +{ + struct nstoken *nstoken = NULL; + int cgroup_fd; + + cgroup_fd = test__join_cgroup("/mptcpify"); + if (!ASSERT_GE(cgroup_fd, 0, "test__join_cgroup")) + return; + + nstoken = create_netns(); + if (!ASSERT_OK_PTR(nstoken, "create_netns")) + goto fail; + + ASSERT_OK(run_mptcpify(cgroup_fd), "run_mptcpify"); + +fail: + cleanup_netns(nstoken); close(cgroup_fd); } @@ -186,4 +294,6 @@ void test_mptcp(void) { if (test__start_subtest("base")) test_base(); + if (test__start_subtest("mptcpify")) + test_mptcpify(); } diff --git a/tools/testing/selftests/bpf/progs/mptcpify.c b/tools/testing/selftests/bpf/progs/mptcpify.c new file mode 100644 index 000000000000..58be68c021da --- /dev/null +++ b/tools/testing/selftests/bpf/progs/mptcpify.c @@ -0,0 +1,17 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2023, SUSE. */ + +#include <linux/bpf.h> +#include <bpf/bpf_helpers.h> +#include "bpf_tcp_helpers.h" + +char _license[] SEC("license") = "GPL"; + +SEC("lsm_cgroup/socket_create") +int BPF_PROG(mptcpify, int *family, int *type, int *protocol, int kern) +{ + if (!kern) + bpf_mptcpify(family, type, protocol); + + return 1; +} -- 2.35.3

1 year, 11 months

4
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[PATCH v3 00/11] drm: kunit: Switch to kunit actions

by Maxime Ripard

Hi, Since v6.5-rc1, kunit gained a devm/drmm-like mechanism that makes tests resources much easier to cleanup. This series converts the existing tests to use those new actions where relevant. Let me know what you think, Maxime Signed-off-by: Maxime Ripard <mripard(a)kernel.org> --- Changes in v3: - Fixed the build cast warnings by switching to wrapper functions - Link to v2: https://lore.kernel.org/r/20230720-kms-kunit-actions-rework-v2-0-175017bd56… Changes in v2: - Fix some typos - Use plaltform_device_del instead of removing the call to platform_device_put after calling platform_device_add - Link to v1: https://lore.kernel.org/r/20230710-kms-kunit-actions-rework-v1-0-722c58d72c… --- Maxime Ripard (11): drm/tests: helpers: Switch to kunit actions drm/tests: client-modeset: Remove call to drm_kunit_helper_free_device() drm/tests: modes: Remove call to drm_kunit_helper_free_device() drm/tests: probe-helper: Remove call to drm_kunit_helper_free_device() drm/tests: helpers: Create a helper to allocate a locking ctx drm/tests: helpers: Create a helper to allocate an atomic state drm/vc4: tests: pv-muxing: Remove call to drm_kunit_helper_free_device() drm/vc4: tests: mock: Use a kunit action to unregister DRM device drm/vc4: tests: pv-muxing: Switch to managed locking init drm/vc4: tests: Switch to atomic state allocation helper drm/vc4: tests: pv-muxing: Document test scenario drivers/gpu/drm/tests/drm_client_modeset_test.c | 8 -- drivers/gpu/drm/tests/drm_kunit_helpers.c | 141 +++++++++++++++++++++++- drivers/gpu/drm/tests/drm_modes_test.c | 8 -- drivers/gpu/drm/tests/drm_probe_helper_test.c | 8 -- drivers/gpu/drm/vc4/tests/vc4_mock.c | 12 ++ drivers/gpu/drm/vc4/tests/vc4_test_pv_muxing.c | 115 +++++++------------ include/drm/drm_kunit_helpers.h | 7 ++ 7 files changed, 198 insertions(+), 101 deletions(-) --- base-commit: d7b3af5a77e8d8da28f435f313e069aea5bcf172 change-id: 20230710-kms-kunit-actions-rework-5d163762c93b Best regards, -- Maxime Ripard <mripard(a)kernel.org>

1 year, 11 months

1
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[PATCH v2 00/11] drm: kunit: Switch to kunit actions

by Maxime Ripard

Hi, Since v6.5-rc1, kunit gained a devm/drmm-like mechanism that makes tests resources much easier to cleanup. This series converts the existing tests to use those new actions where relevant. Let me know what you think, Maxime Signed-off-by: Maxime Ripard <mripard(a)kernel.org> --- Changes in v2: - Fix some typos - Use plaltform_device_del instead of removing the call to platform_device_put after calling platform_device_add - Link to v1: https://lore.kernel.org/r/20230710-kms-kunit-actions-rework-v1-0-722c58d72c… --- Maxime Ripard (11): drm/tests: helpers: Switch to kunit actions drm/tests: client-modeset: Remove call to drm_kunit_helper_free_device() drm/tests: modes: Remove call to drm_kunit_helper_free_device() drm/tests: probe-helper: Remove call to drm_kunit_helper_free_device() drm/tests: helpers: Create a helper to allocate a locking ctx drm/tests: helpers: Create a helper to allocate an atomic state drm/vc4: tests: pv-muxing: Remove call to drm_kunit_helper_free_device() drm/vc4: tests: mock: Use a kunit action to unregister DRM device drm/vc4: tests: pv-muxing: Switch to managed locking init drm/vc4: tests: Switch to atomic state allocation helper drm/vc4: tests: pv-muxing: Document test scenario drivers/gpu/drm/tests/drm_client_modeset_test.c | 8 -- drivers/gpu/drm/tests/drm_kunit_helpers.c | 108 +++++++++++++++++++++- drivers/gpu/drm/tests/drm_modes_test.c | 8 -- drivers/gpu/drm/tests/drm_probe_helper_test.c | 8 -- drivers/gpu/drm/vc4/tests/vc4_mock.c | 5 ++ drivers/gpu/drm/vc4/tests/vc4_test_pv_muxing.c | 115 +++++++++--------------- include/drm/drm_kunit_helpers.h | 7 ++ 7 files changed, 158 insertions(+), 101 deletions(-) --- base-commit: c58c49dd89324b18a812762a2bfa5a0458e4f252 change-id: 20230710-kms-kunit-actions-rework-5d163762c93b Best regards, -- Maxime Ripard <mripard(a)kernel.org>

1 year, 11 months

3
17
0 0

[PATCH v5 0/9] drm: selftest: Convert to KUnit

by Maíra Canal

Hi everyone, Here is the v5 of the conversion of selftests to KUnit. Since the v4, the only fix was checking the checkpatch warnings and checks (Thank you Javier). Thanks for your attention and any feedback is welcomed! Best Regards, - Maíra Canal v1 -> v2: https://lore.kernel.org/dri-devel/20220615135824.15522-1-maira.canal@usp.br… - The suites not longer end in _tests (David Gow). - Remove the TODO entry involving the conversion of selftests to KUnit (Javier Martinez Canillas). - Change the filenames to match the documentation: use *_test.c (Javier Martinez Canillas). - Add MODULE_LICENSE to all tests (kernel test robot). - Make use of a generic symbol to group all tests - DRM_KUNIT_TEST (Javier Martinez Canillas). - Add .kunitconfig on the first patch (it was on the second patch of the series). - Straightforward conversion of the drm_cmdline_parser tests without functional changes (Shuah Khan) - Add David's Tested-by tags. v2 -> v3: https://lore.kernel.org/dri-devel/20220621200926.257002-1-maira.canal@usp.b… - Rebase it on top of the drm-misc-next with drm_format_helper KUnit tests. - Change KUNIT_EXPECT_FALSE to KUNIT_EXPECT_EQ on drm_format_test (Daniel Latypov). - Add Daniel's Acked-by tag. v3 -> v4: https://lore.kernel.org/dri-devel/9185aadb-e459-00fe-70be-3675f6f3ef4c@redh… - Add blank line after #include <kunit/test.h> (Javier Martinez Canillas). - Make the order of the tags chronological (Javier Martinez Canillas). - Add Copywrite to the tests (Javier Martinez Canillas). - Add Javier Martinez Canillas's Reviewed-By tag. v4 -> v5: https://lore.kernel.org/dri-devel/20220702131116.457444-1-maira.canal@usp.b… - Fix checkpatch warnings and checks (Javier Martinez Canillas). Arthur Grillo (1): drm: selftest: convert drm_mm selftest to KUnit Maíra Canal (8): drm: selftest: convert drm_damage_helper selftest to KUnit drm: selftest: convert drm_cmdline_parser selftest to KUnit drm: selftest: convert drm_rect selftest to KUnit drm: selftest: convert drm_format selftest to KUnit drm: selftest: convert drm_plane_helper selftest to KUnit drm: selftest: convert drm_dp_mst_helper selftest to KUnit drm: selftest: convert drm_framebuffer selftest to KUnit drm: selftest: convert drm_buddy selftest to KUnit Documentation/gpu/todo.rst | 11 - drivers/gpu/drm/Kconfig | 20 +- drivers/gpu/drm/Makefile | 1 - drivers/gpu/drm/selftests/Makefile | 8 - .../gpu/drm/selftests/drm_buddy_selftests.h | 15 - .../gpu/drm/selftests/drm_cmdline_selftests.h | 68 - drivers/gpu/drm/selftests/drm_mm_selftests.h | 28 - .../gpu/drm/selftests/drm_modeset_selftests.h | 40 - drivers/gpu/drm/selftests/drm_selftest.c | 109 -- drivers/gpu/drm/selftests/drm_selftest.h | 41 - drivers/gpu/drm/selftests/test-drm_buddy.c | 994 ------------- .../drm/selftests/test-drm_cmdline_parser.c | 1141 --------------- .../drm/selftests/test-drm_damage_helper.c | 668 --------- drivers/gpu/drm/selftests/test-drm_format.c | 280 ---- .../drm/selftests/test-drm_modeset_common.c | 32 - .../drm/selftests/test-drm_modeset_common.h | 52 - drivers/gpu/drm/selftests/test-drm_rect.c | 223 --- drivers/gpu/drm/tests/Makefile | 4 +- drivers/gpu/drm/tests/drm_buddy_test.c | 756 ++++++++++ .../gpu/drm/tests/drm_cmdline_parser_test.c | 1078 ++++++++++++++ .../gpu/drm/tests/drm_damage_helper_test.c | 634 +++++++++ .../drm_dp_mst_helper_test.c} | 89 +- drivers/gpu/drm/tests/drm_format_test.c | 287 ++++ .../drm_framebuffer_test.c} | 77 +- .../test-drm_mm.c => tests/drm_mm_test.c} | 1248 +++++++---------- .../drm_plane_helper_test.c} | 122 +- drivers/gpu/drm/tests/drm_rect_test.c | 214 +++ 27 files changed, 3652 insertions(+), 4588 deletions(-) delete mode 100644 drivers/gpu/drm/selftests/Makefile delete mode 100644 drivers/gpu/drm/selftests/drm_buddy_selftests.h delete mode 100644 drivers/gpu/drm/selftests/drm_cmdline_selftests.h delete mode 100644 drivers/gpu/drm/selftests/drm_mm_selftests.h delete mode 100644 drivers/gpu/drm/selftests/drm_modeset_selftests.h delete mode 100644 drivers/gpu/drm/selftests/drm_selftest.c delete mode 100644 drivers/gpu/drm/selftests/drm_selftest.h delete mode 100644 drivers/gpu/drm/selftests/test-drm_buddy.c delete mode 100644 drivers/gpu/drm/selftests/test-drm_cmdline_parser.c delete mode 100644 drivers/gpu/drm/selftests/test-drm_damage_helper.c delete mode 100644 drivers/gpu/drm/selftests/test-drm_format.c delete mode 100644 drivers/gpu/drm/selftests/test-drm_modeset_common.c delete mode 100644 drivers/gpu/drm/selftests/test-drm_modeset_common.h delete mode 100644 drivers/gpu/drm/selftests/test-drm_rect.c create mode 100644 drivers/gpu/drm/tests/drm_buddy_test.c create mode 100644 drivers/gpu/drm/tests/drm_cmdline_parser_test.c create mode 100644 drivers/gpu/drm/tests/drm_damage_helper_test.c rename drivers/gpu/drm/{selftests/test-drm_dp_mst_helper.c => tests/drm_dp_mst_helper_test.c} (72%) create mode 100644 drivers/gpu/drm/tests/drm_format_test.c rename drivers/gpu/drm/{selftests/test-drm_framebuffer.c => tests/drm_framebuffer_test.c} (86%) rename drivers/gpu/drm/{selftests/test-drm_mm.c => tests/drm_mm_test.c} (55%) rename drivers/gpu/drm/{selftests/test-drm_plane_helper.c => tests/drm_plane_helper_test.c} (57%) create mode 100644 drivers/gpu/drm/tests/drm_rect_test.c -- 2.35.3

1 year, 11 months

10
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[PATCH v2 0/3] kunit: Expose some built-in features to modules

by Janusz Krzysztofik

Submit the top-level headers also from the kunit test module notifier initialization callback, so external tools that are parsing dmesg for kunit test output are able to tell how many test suites should be expected and whether to continue parsing after complete output from the first test suite is collected. Extend kunit module notifier initialization callback with a processing path for only listing the tests provided by a module if the kunit action parameter is set to "list", so external tools can obtain a list of test cases to be executed in advance and can make a better job on assigning kernel messages interleaved with kunit output to specific tests. Use test filtering functions in kunit module notifier callback functions, so external tools are able to execute individual test cases from kunit test modules in order to still better isolate their potential impact on kernel messages that appear interleaved with output from other tests. v2: Fix new name of a structure moved to kunit namespace not updated across all uses. Janusz Krzysztofik (3): kunit: Report the count of test suites in a module kunit: Make 'list' action available to kunit test modules kunit: Allow kunit test modules to use test filtering include/kunit/test.h | 14 +++++++++++ lib/kunit/executor.c | 57 +++++++++++++++++++++++++------------------- lib/kunit/test.c | 57 +++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 103 insertions(+), 25 deletions(-) -- 2.41.0

1 year, 11 months

2
5
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[PATCH v3 00/12] selftests/nolibc: add minimal kernel config support - part1

by Zhangjin Wu

Hi, Willy Most of the suggestions of v2 [1] have been applied in this v3 revision, except the local menuconfig and mrproper targets, as explained in [2]. A fresh run with tinyconfig for ppc, ppc64 and ppc64le: $ for arch in ppc ppc64 ppc64le; do \ mkdir -p $PWD/kernel-$arch; time make defconfig run DEFCONFIG=tinyconfig ARCH=$arch O=$PWD/kernel-$arch RUN_OUT=$PWD/run.$arch.out; done rerun for ppc, ppc64 and ppc64le: $ for arch in ppc ppc64 ppc64le; do \ make rerun ARCH=$arch O=$PWD/kernel-$arch RUN_OUT=$PWD/run.$arch.out; done Running /labs/linux-lab/src/linux-stable/tools/testing/selftests/nolibc/kernel-ppc/vmlinux on qemu-system-ppc >> [ppc] Kernel command line: console=ttyS0 panic=-1 printk: console [ttyS0] enabled Run /init as init process Running test 'startup' Running test 'syscall' Running test 'stdlib' Running test 'vfprintf' Running test 'protection' Leaving init with final status: 0 reboot: Power down powered off, test finish qemu-system-ppc: terminating on signal 15 from pid 190248 () 165 test(s): 156 passed, 9 skipped, 0 failed => status: warning See all results in /labs/linux-lab/src/linux-stable/tools/testing/selftests/nolibc/run.ppc.out Running /labs/linux-lab/src/linux-stable/tools/testing/selftests/nolibc/kernel-ppc64/vmlinux on qemu-system-ppc64 Linux version 6.4.0+ (ubuntu@linux-lab) (powerpc64le-linux-gnu-gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #2 SMP Fri Jul 28 01:40:55 CST 2023 Kernel command line: console=hvc0 panic=-1 printk: console [hvc0] enabled printk: console [hvc0] enabled Run /init as init process Running test 'startup' Running test 'syscall' Running test 'stdlib' Running test 'vfprintf' Running test 'protection' Leaving init with final status: 0 reboot: Power down powered off, test finish 165 test(s): 156 passed, 9 skipped, 0 failed => status: warning See all results in /labs/linux-lab/src/linux-stable/tools/testing/selftests/nolibc/run.ppc64.out Running /labs/linux-lab/src/linux-stable/tools/testing/selftests/nolibc/kernel-ppc64le/arch/powerpc/boot/zImage on qemu-system-ppc64le Linux version 6.4.0+ (ubuntu@linux-lab) (powerpc64le-linux-gnu-gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #2 SMP Fri Jul 28 01:41:12 CST 2023 Kernel command line: console=hvc0 panic=-1 Run /init as init process Running test 'startup' Running test 'syscall' Running test 'stdlib' Running test 'vfprintf' Running test 'protection' Leaving init with final status: 0 reboot: Power down powered off, test finish 165 test(s): 156 passed, 9 skipped, 0 failed => status: warning See all results in /labs/linux-lab/src/linux-stable/tools/testing/selftests/nolibc/run.ppc64le.out A fast report on existing test logs: $ for arch in ppc ppc64 ppc64le; do \ make report ARCH=$arch RUN_OUT=$PWD/run.$arch.out | grep status; \ done 165 test(s): 156 passed, 9 skipped, 0 failed => status: warning 165 test(s): 156 passed, 9 skipped, 0 failed => status: warning 165 test(s): 156 passed, 9 skipped, 0 failed => status: warning Changes from v2 --> v3: * selftests/nolibc: allow report with existing test log selftests/nolibc: fix up O= option support selftests/nolibc: allow customize CROSS_COMPILE by architecture selftests/nolibc: customize CROSS_COMPILE for 32/64-bit powerpc selftests/nolibc: tinyconfig: add extra common options No Change. * selftests/nolibc: add macros to reduce duplicated changes Remove REPORT_RUN_OUT and LOG_OUT. * selftests/nolibc: string the core targets Removed extconfig target from our v3 powerpc patchset [3], the operations have been merged into the defconfig target. Let kernel depends on $(KERNEL_CONFIG) instead of the removed extconfig. * selftests/nolibc: add menuconfig and mrproper for development like the other local nolibc targets, still require local menuconfig and mrproper targets for consistent usage with the same ARCH and no -C /path/to/srctree Merge them together to reduce duplicated entries. * selftests/nolibc: allow quit qemu-system when poweroff fails Enhance timeout logic with more expected strings print and detection about the booting of bios, kernel, init and test. Add a default 10 seconds of QEMU_TIMEOUT for every architecture to detect all of the potential boog hang or failed poweroff. * selftests/nolibc: customize QEMU_TIMEOUT for ppc64/ppc64le Reduce QEMU_TIMEOUT from 60 seconds to a more normal 15 and 20 seconds for ppc64 and ppc64le respectively. the main time cost is the slow bios used. * selftests/nolibc: tinyconfig: add support for 32/64-bit powerpc Rename the file names to shorter ones as suggestions from the powerpc patchset. * selftests/nolibc: speed up some targets with multiple jobs New to speed up with -j<N> by default. Best regards, Zhangjin --- [1]: https://lore.kernel.org/lkml/cover.1689759351.git.falcon@tinylab.org/ [2]: https://lore.kernel.org/lkml/20230727132418.117924-1-falcon@tinylab.org/ [3]: https://lore.kernel.org/lkml/8e9e5ac6283c6ec2ecf10a70ce55b219028497c1.16904… Zhangjin Wu (12): selftests/nolibc: allow report with existing test log selftests/nolibc: add macros to reduce duplicated changes selftests/nolibc: fix up O= option support selftests/nolibc: string the core targets selftests/nolibc: allow customize CROSS_COMPILE by architecture selftests/nolibc: customize CROSS_COMPILE for 32/64-bit powerpc selftests/nolibc: add menuconfig and mrproper for development selftests/nolibc: allow quit qemu-system when poweroff fails selftests/nolibc: customize QEMU_TIMEOUT for ppc64/ppc64le selftests/nolibc: tinyconfig: add extra common options selftests/nolibc: tinyconfig: add support for 32/64-bit powerpc selftests/nolibc: speed up some targets with multiple jobs tools/testing/selftests/nolibc/Makefile | 102 ++++++++++++++---- .../selftests/nolibc/configs/common.config | 4 + .../selftests/nolibc/configs/ppc.config | 3 + .../selftests/nolibc/configs/ppc64.config | 3 + .../selftests/nolibc/configs/ppc64le.config | 4 + 5 files changed, 98 insertions(+), 18 deletions(-) create mode 100644 tools/testing/selftests/nolibc/configs/common.config create mode 100644 tools/testing/selftests/nolibc/configs/ppc64.config create mode 100644 tools/testing/selftests/nolibc/configs/ppc64le.config -- 2.25.1

1 year, 11 months

3
25
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[PATCH v3 0/7] tools/nolibc: add 32/64-bit powerpc support

by Zhangjin Wu

Hi, Willy, Thomas v3 here is to fix up two issues introduced in v2 powerpc patchset [1]. - One is restore the wrongly removed '\' for a '\$$ARCH' - Another is add the missing $(ARCH).config for ppc, the default variant for powerpc is renamed to ppc in v2 (as discussed with Willy in [2]), but ppc.config is missing in v2 patchset, not sure why this happen, may a 'git clean -fdx .' is required to do a new test, just did it. Btw, the v3 tinyconfig-part1 for powerpc is ready, I will send it out soon. Best regards, Zhangjin --- [1]: https://lore.kernel.org/lkml/cover.1690373704.git.falcon@tinylab.org/ [2]: https://lore.kernel.org/lkml/ZL9leVOI25S2+0+g@1wt.eu/ Zhangjin Wu (7): tools/nolibc: add support for powerpc tools/nolibc: add support for powerpc64 selftests/nolibc: add extra configs customize support selftests/nolibc: add XARCH and ARCH mapping support selftests/nolibc: add test support for ppc selftests/nolibc: add test support for ppc64le selftests/nolibc: add test support for ppc64 tools/include/nolibc/arch-powerpc.h | 202 ++++++++++++++++++ tools/include/nolibc/arch.h | 2 + tools/testing/selftests/nolibc/Makefile | 46 +++- .../selftests/nolibc/configs/ppc.config | 3 + 4 files changed, 246 insertions(+), 7 deletions(-) create mode 100644 tools/include/nolibc/arch-powerpc.h create mode 100644 tools/testing/selftests/nolibc/configs/ppc.config -- 2.25.1

1 year, 11 months

3
20
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[PATCH 0/2] tools/nolibc: add pipe() and its testcase

by Yuan Tan

Hi, Zhangjin and I are working on a tiny shell with nolibc. This patch enables the missing pipe() with its testcase. Thanks. Yuan Tan (2): tools/nolibc: add pipe() support selftests/nolibc: add testcase for pipe. tools/include/nolibc/sys.h | 17 ++++++++++ tools/testing/selftests/nolibc/nolibc-test.c | 34 ++++++++++++++++++++ 2 files changed, 51 insertions(+) -- 2.39.2

1 year, 11 months

4
12
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Re: [PATCH v5] selftests: rtc: Improve rtctest error handling

by Greg KH

Hi, This is the semi-friendly patch-bot of Greg Kroah-Hartman. Markus, you seem to have sent a nonsensical or otherwise pointless review comment to a patch submission on a Linux kernel developer mailing list. I strongly suggest that you not do this anymore. Please do not bother developers who are actively working to produce patches and features with comments that, in the end, are a waste of time. Patch submitter, please ignore Markus's suggestion; you do not need to follow it at all. The person/bot/AI that sent it is being ignored by almost all Linux kernel maintainers for having a persistent pattern of behavior of producing distracting and pointless commentary, and inability to adapt to feedback. Please feel free to also ignore emails from them. thanks, greg k-h's patch email bot

1 year, 11 months

1
0
0 0

[PATCH 0/2] mm/damon/core: fix unitialized memory error from

by SeongJae Park

damos_new_filter() is returning a damos_filter struct without initializing its ->list field. And the users of the function uses the struct without initializing the field. As a result, uninitialized memory access error is possible. Actually, a kernel NULL pointer dereference BUG can be triggered using DAMON user-space tool, like below. # damo start --damos_action stat --damos_filter anon matching # damo tune --damos_action stat --damos_filter anon matching --damos_filter anon nomatching # dmesg [...] [ 36.908136] BUG: kernel NULL pointer dereference, address: 0000000000000008 [ 36.910483] #PF: supervisor write access in kernel mode [ 36.912238] #PF: error_code(0x0002) - not-present page [ 36.913415] PGD 0 P4D 0 [ 36.913978] Oops: 0002 [#1] PREEMPT SMP PTI [ 36.914878] CPU: 32 PID: 1335 Comm: kdamond.0 Not tainted 6.5.0-rc3-mm-unstable-damon+ #1 [ 36.916621] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 [ 36.919051] RIP: 0010:damos_destroy_filter (include/linux/list.h:114 include/linux/list.h:137 include/linux/list.h:148 mm/damon/core.c:345 mm/damon/core.c:355) [...] [ 36.938247] Call Trace: [ 36.938721] <TASK> [...] [ 36.950064] ? damos_destroy_filter (include/linux/list.h:114 include/linux/list.h:137 include/linux/list.h:148 mm/damon/core.c:345 mm/damon/core.c:355) [ 36.950883] ? damon_sysfs_set_scheme_filters.isra.0 (mm/damon/sysfs-schemes.c:1573) [ 36.952019] damon_sysfs_set_schemes (mm/damon/sysfs-schemes.c:1674 mm/damon/sysfs-schemes.c:1686) [ 36.952875] damon_sysfs_apply_inputs (mm/damon/sysfs.c:1312 mm/damon/sysfs.c:1298) [ 36.953757] ? damon_pa_check_accesses (mm/damon/paddr.c:168 mm/damon/paddr.c:179) [ 36.954648] damon_sysfs_cmd_request_callback (mm/damon/sysfs.c:1329 mm/damon/sysfs.c:1359) [...] The first patch of this patchset fixes the bug by initializing the field in damos_new_filter(). The second patch adds a unit test for the problem. Note that the second patch Cc stable@ without Fixes: tag, since it would be better to be ingested together for avoiding any future regression. SeongJae Park (2): mm/damon/core: initialize damo_filter->list from damos_new_filter() mm/damon/core-test: add a test for damos_new_filter() mm/damon/core-test.h | 13 +++++++++++++ mm/damon/core.c | 1 + 2 files changed, 14 insertions(+) -- 2.25.1

1 year, 11 months

1
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