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

[bug report] selftests: cgroup: add memory controller self-tests

by Dan Carpenter

Hello Roman Gushchin, The patch 84092dbcf901: "selftests: cgroup: add memory controller self-tests" from May 11, 2018, leads to the following static checker warning: ./tools/testing/selftests/cgroup/test_memcontrol.c:76 test_memcg_subtree_control() error: uninitialized symbol 'child2'. ./tools/testing/selftests/cgroup/test_memcontrol.c 69 70 cleanup: 71 cg_destroy(child); 72 cg_destroy(parent); 73 free(parent); 74 free(child); 75 76 cg_destroy(child2); The problem with using one error label to handle all possible returns is that some stuff hasn't been initialized yet. 77 cg_destroy(parent2); 78 free(parent2); 79 free(child2); 80 81 return ret; 82 } regards, dan carpenter -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

2
3
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qemu-system-x86_64: mov_ss_trap_64 PANIC: double fault, error_code: 0x0

by Naresh Kamboju

Kselftest test case mov_ss_trap_64 is causing kernel panic on qemu-system-x86_64 and PASS on real x86_64 hardware. Test code snippet, main() { <> printf("[RUN]\tMOV SS; CS CS INT3\n"); asm volatile ("mov %[ss], %%ss; .byte 0x2e, 0x2e; int3" :: [ss] "m" (ss)); <> } Linux version 4.17.3-rc1 (buildslave@lkft-01) (gcc version 6.2.1 20161016 (Linaro GCC 6.2-2016.11)) #1 SMP Thu Jun 21 02:19:19 UTC 2018 This test was good on kernel 4.17.2 good git commit: 3816828a8cd06c5e0a0a9e0456013d61d979d975 Bad on 4.17.3-rc1 (and stable-rc 4.14.52-rc1) Bad git commit: 894caab83aab21f120cde83eb5b969b99fcf8696 git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git qemu-system-x86_64 version 2.12.0 steps to reproduce and test log, + cd tools/testing/selftests/x86 + ./mov_ss_trap_64 SS = 0x2b, &SS = 0x0x604188 Set up a watchpoint DR0 = 604188, DR1 = 400a19, DR7 = 7000a [RUN] Read from watched memory (should get SIGTRAP) Got SIGTRAP with RIP=4008ea, EFLAGS.RF=0 [RUN] MOV SS; INT3 Got SIGTRAP with RIP=4008fb, EFLAGS.RF=0 [RUN] MOV SS; INT 3 Got SIGTRAP with RIP=40090d, EFLAGS.RF=0 [RUN] M[ 20.305426] PANIC: double fault, error_code: 0x0 OV SS; CS CS INT3 Got SIGTRAP with RIP=400920,[ 20.308317] CPU: 3 PID: 2471 Comm: mov_ss_trap_64 Not tainted 4.17.3-rc1 #1 EFLAGS.RF=0 [RUN] MOV SS; CSx14 INT3 [ 20.311664] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 20.314738] RIP: 0010:error_entry+0x32/0x100 <trim> [ 20.336649] Call Trace: [ 20.337523] <ENTRY_TRAMPOLINE> [ 20.338507] ? native_iret+0x7/0x7 [ 20.339611] ? page_fault+0x8/0x30 [ 20.340693] ? error_entry+0x86/0x100 [ 20.341871] ? trace_hardirqs_off_caller+0x7/0xa0 [ 20.343212] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 20.344554] ? native_iret+0x7/0x7 [ 20.345647] ? page_fault+0x8/0x30 [ 20.346716] ? error_entry+0x86/0x100 [ 20.347853] ? page_fault+0x8/0x30 [ 20.348920] ? ist_enter+0x6/0xa0 [ 20.349961] ? do_int3+0x34/0x120 [ 20.351095] ? int3+0x14/0x20 [ 20.352047] </ENTRY_TRAMPOLINE> [ 20.353060] Code: 48 89 7c 24 08 52 31 d2 51 31 c9 50 41 50 45 31 c0 41 51 45 31 c9 41 52 45 31 d2 41 53 45 31 db 53 31 db 55 31 ed 41 54 45 31 e4 <41> 55 45 31 ed 41 56 45 31 f6 41 57 45 31 ff 56 48 8d 6c 24 09 [ 20.357895] Kernel panic - not syncing: Machine halted. Bug ink, https://bugs.linaro.org/show_bug.cgi?id=3916 Test case link, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/tre… Best regards Naresh Kamboju -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

3
2
0 0

[PATCH net-next] selftests: forwarding: mirror_gre_vlan_bridge_1q: Unset rp_filter

by Petr Machata

The IP addresses of tunnel endpoint at H3 are set at the VLAN device $h3.555. Therefore when test_gretap_untagged_egress() sets vlan 555 to egress untagged at $swp3, $h3's rp_filter rejects these packets. The test then spuriously fails. Therefore turn off net.ipv4.conf.{all, $h3}.rp_filter. Fixes: 9c7c8a82442c ("selftests: forwarding: mirror_gre_vlan_bridge_1q: Add more tests") Signed-off-by: Petr Machata <petrm(a)mellanox.com> Reviewed-by: Ido Schimmel <idosch(a)mellanox.com> --- .../selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh b/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh index 5dbc7a08f4bd..1ac5038ae256 100755 --- a/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh +++ b/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh @@ -39,6 +39,12 @@ setup_prepare() swp3=${NETIFS[p5]} h3=${NETIFS[p6]} + # gt4's remote address is at $h3.555, not $h3. Thus the packets arriving + # directly to $h3 for test_gretap_untagged_egress() are rejected by + # rp_filter and the test spuriously fails. + sysctl_set net.ipv4.conf.all.rp_filter 0 + sysctl_set net.ipv4.conf.$h3.rp_filter 0 + vrf_prepare mirror_gre_topo_create @@ -65,6 +71,9 @@ cleanup() mirror_gre_topo_destroy vrf_cleanup + + sysctl_restore net.ipv4.conf.$h3.rp_filter + sysctl_restore net.ipv4.conf.all.rp_filter } test_vlan_match() -- 2.4.11 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

2
1
0 0

[PATCH net-next v2] selftests: net: Test headroom handling of ip6_gre devices

by Petr Machata

Commit 5691484df961 ("net: ip6_gre: Fix headroom request in ip6erspan_tunnel_xmit()") and commit 01b8d064d58b ("net: ip6_gre: Request headroom in __gre6_xmit()") fix problems in reserving headroom in the packets tunneled through ip6gre/tap and ip6erspan netdevices. These two patches included snippets that reproduced the issues. This patch elevates the snippets to a full-fledged test case. Suggested-by: David Miller <davem(a)davemloft.net> Signed-off-by: Petr Machata <petrm(a)mellanox.com> --- Notes: Changes between v1 and v2: - Move tunnel construction to setup() and destruction to cleanup(). tools/testing/selftests/net/ip6_gre_headroom.sh | 65 +++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100755 tools/testing/selftests/net/ip6_gre_headroom.sh diff --git a/tools/testing/selftests/net/ip6_gre_headroom.sh b/tools/testing/selftests/net/ip6_gre_headroom.sh new file mode 100755 index 000000000000..5b41e8bb6e2d --- /dev/null +++ b/tools/testing/selftests/net/ip6_gre_headroom.sh @@ -0,0 +1,65 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Test that enough headroom is reserved for the first packet passing through an +# IPv6 GRE-like netdevice. + +setup_prepare() +{ + ip link add h1 type veth peer name swp1 + ip link add h3 type veth peer name swp3 + + ip link set dev h1 up + ip address add 192.0.2.1/28 dev h1 + + ip link add dev vh3 type vrf table 20 + ip link set dev h3 master vh3 + ip link set dev vh3 up + ip link set dev h3 up + + ip link set dev swp3 up + ip address add dev swp3 2001:db8:2::1/64 + ip address add dev swp3 2001:db8:2::3/64 + + ip link set dev swp1 up + tc qdisc add dev swp1 clsact + + ip link add name er6 type ip6erspan \ + local 2001:db8:2::1 remote 2001:db8:2::2 oseq okey 123 + ip link set dev er6 up + + ip link add name gt6 type ip6gretap \ + local 2001:db8:2::3 remote 2001:db8:2::4 + ip link set dev gt6 up + + sleep 1 +} + +cleanup() +{ + ip link del dev gt6 + ip link del dev er6 + ip link del dev swp1 + ip link del dev swp3 + ip link del dev vh3 +} + +test_headroom() +{ + local type=$1; shift + local tundev=$1; shift + + tc filter add dev swp1 ingress pref 1000 matchall skip_hw \ + action mirred egress mirror dev $tundev + ping -I h1 192.0.2.2 -c 1 -w 2 &> /dev/null + tc filter del dev swp1 ingress pref 1000 + + # If it doesn't panic, it passes. + printf "TEST: %-60s [PASS]\n" "$type headroom" +} + +trap cleanup EXIT + +setup_prepare +test_headroom ip6gretap gt6 +test_headroom ip6erspan er6 -- 2.4.11 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

2
1
0 0

[PATCH 1/1] kvm: selftests: add cr4_cpuid_sync_test

by Wei Huang

KVM is supposed to update some guest VM's CPUID bits (e.g. OSXSAVE) when CR4 is changed. A bug was found in KVM recently and it was fixed by Commit c4d2188206ba ("KVM: x86: Update cpuid properly when CR4.OSXAVE or CR4.PKE is changed"). This patch adds a test to verify the synchronization between guest VM's CR4 and CPUID bits. Signed-off-by: Wei Huang <wei(a)redhat.com> --- tools/testing/selftests/kvm/Makefile | 1 + tools/testing/selftests/kvm/cr4_cpuid_sync_test.c | 129 ++++++++++++++++++++++ 2 files changed, 130 insertions(+) create mode 100644 tools/testing/selftests/kvm/cr4_cpuid_sync_test.c diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index d9d0031..65bda4f 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -9,6 +9,7 @@ LIBKVM_x86_64 = lib/x86.c lib/vmx.c TEST_GEN_PROGS_x86_64 = set_sregs_test TEST_GEN_PROGS_x86_64 += sync_regs_test TEST_GEN_PROGS_x86_64 += vmx_tsc_adjust_test +TEST_GEN_PROGS_x86_64 += cr4_cpuid_sync_test TEST_GEN_PROGS += $(TEST_GEN_PROGS_$(UNAME_M)) LIBKVM += $(LIBKVM_$(UNAME_M)) diff --git a/tools/testing/selftests/kvm/cr4_cpuid_sync_test.c b/tools/testing/selftests/kvm/cr4_cpuid_sync_test.c new file mode 100644 index 0000000..dbbaf3c --- /dev/null +++ b/tools/testing/selftests/kvm/cr4_cpuid_sync_test.c @@ -0,0 +1,129 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * CR4 and CPUID sync test + * + * Copyright 2018, Red Hat, Inc. and/or its affiliates. + * + * Author: + * Wei Huang <wei(a)redhat.com> + */ + +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/ioctl.h> + +#include "test_util.h" + +#include "kvm_util.h" +#include "x86.h" + +#define X86_FEATURE_XSAVE (1<<26) +#define X86_FEATURE_OSXSAVE (1<<27) +#define VCPU_ID 1 + +enum { + GUEST_UPDATE_CR4 = 0x1000, + GUEST_FAILED, + GUEST_DONE, +}; + +static void exit_to_hv(uint16_t port) +{ + __asm__ __volatile__("in %[port], %%al" + : + : [port]"d"(port) + : "rax"); +} + +static inline bool cr4_cpuid_is_sync(void) +{ + int func, subfunc; + uint32_t eax, ebx, ecx, edx; + uint64_t cr4; + + func = 0x1; + subfunc = 0x0; + __asm__ __volatile__("cpuid" + : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx) + : "a"(func), "c"(subfunc)); + + cr4 = get_cr4(); + + return (!!(ecx & X86_FEATURE_OSXSAVE)) == (!!(cr4 & X86_CR4_OSXSAVE)); +} + +static void guest_code(void) +{ + uint64_t cr4; + + /* turn on CR4.OSXSAVE */ + cr4 = get_cr4(); + cr4 |= X86_CR4_OSXSAVE; + set_cr4(cr4); + + /* verify CR4.OSXSAVE == CPUID.OSXSAVE */ + if (!cr4_cpuid_is_sync()) + exit_to_hv(GUEST_FAILED); + + /* notify hypervisor to change CR4 */ + exit_to_hv(GUEST_UPDATE_CR4); + + /* check again */ + if (!cr4_cpuid_is_sync()) + exit_to_hv(GUEST_FAILED); + + exit_to_hv(GUEST_DONE); +} + +int main(int argc, char *argv[]) +{ + struct kvm_run *run; + struct kvm_vm *vm; + struct kvm_sregs sregs; + struct kvm_cpuid_entry2 *entry; + int rc; + + entry = kvm_get_supported_cpuid_entry(1); + if (!(entry->ecx & X86_FEATURE_XSAVE)) { + printf("XSAVE feature not supported, skipping test\n"); + return 0; + } + + /* Tell stdout not to buffer its content */ + setbuf(stdout, NULL); + + /* Create VM */ + vm = vm_create_default_vmx(VCPU_ID, guest_code); + vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid()); + run = vcpu_state(vm, VCPU_ID); + + while (1) { + rc = _vcpu_run(vm, VCPU_ID); + + if (run->exit_reason == KVM_EXIT_IO) { + switch (run->io.port) { + case GUEST_UPDATE_CR4: + /* emulate hypervisor clearing CR4.OSXSAVE */ + vcpu_sregs_get(vm, VCPU_ID, &sregs); + sregs.cr4 &= ~X86_CR4_OSXSAVE; + vcpu_sregs_set(vm, VCPU_ID, &sregs); + break; + case GUEST_FAILED: + TEST_ASSERT(false, "Guest CR4 bit (OSXSAVE) unsynchronized with CPUID bit."); + break; + case GUEST_DONE: + goto done; + default: + TEST_ASSERT(false, "Unknown port 0x%x.", + run->io.port); + } + } + } + + kvm_vm_free(vm); + +done: + return 0; +} -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

2
1
0 0

[PATCH] selftests: bpf: notification about privilege required to run test_lirc_mode2.sh testing script

by Jeffrin Jose T

The test_lirc_mode2.sh script require root privilege for the successful execution of the test. This patch is to notify the user about the privilege the script demands for the successful execution of the test. Signed-off-by: Jeffrin Jose T (Rajagiri SET) <ahiliation(a)gmail.com> --- tools/testing/selftests/bpf/test_lirc_mode2.sh | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/testing/selftests/bpf/test_lirc_mode2.sh b/tools/testing/selftests/bpf/test_lirc_mode2.sh index ce2e15e4f976..51184f8f9e64 100755 --- a/tools/testing/selftests/bpf/test_lirc_mode2.sh +++ b/tools/testing/selftests/bpf/test_lirc_mode2.sh @@ -1,6 +1,15 @@ #!/bin/bash # SPDX-License-Identifier: GPL-2.0 +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +msg="skip all tests:" +if [ $UID != 0 ]; then + echo $msg please run this as root >&2 + exit $ksft_skip +fi + GREEN='\033[0;92m' RED='\033[0;31m' NC='\033[0m' # No Color -- 2.17.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

3
2
0 0

[PATCH v2] selftests: bpf: notification about privilege required to run test_lwt_seg6local.sh testing script

by Jeffrin Jose T

This test needs root privilege for it's successful execution. This patch is atleast used to notify the user about the privilege the script demands for the smooth execution of the test. Signed-off-by: Jeffrin Jose T (Rajagiri SET) <ahiliation(a)gmail.com> --- tools/testing/selftests/bpf/test_lwt_seg6local.sh | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/testing/selftests/bpf/test_lwt_seg6local.sh b/tools/testing/selftests/bpf/test_lwt_seg6local.sh index 1c77994b5e71..30575577a8b2 100755 --- a/tools/testing/selftests/bpf/test_lwt_seg6local.sh +++ b/tools/testing/selftests/bpf/test_lwt_seg6local.sh @@ -21,6 +21,15 @@ # An UDP datagram is sent from fb00::1 to fb00::6. The test succeeds if this # datagram can be read on NS6 when binding to fb00::6. +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +msg="skip all tests:" +if [ $UID != 0 ]; then + echo $msg please run this as root >&2 + exit $ksft_skip +fi + TMP_FILE="/tmp/selftest_lwt_seg6local.txt" cleanup() -- 2.17.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

3
2
0 0

[PATCH] selftests: bpf: enable NET_SCHED

by Anders Roxell

CONFIG_NET_SCHED wasn't enabled in arm64's defconfig only for x86. So bpf/test_tunnel.sh tests fails with: RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported We have an error talking to the kernel, -1 Enable NET_SCHED and more tests passes. Fixes: 3bce593ac06b ("selftests: bpf: config: add config fragments") Signed-off-by: Anders Roxell <anders.roxell(a)linaro.org> --- tools/testing/selftests/bpf/config | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/bpf/config b/tools/testing/selftests/bpf/config index 1e0c547caf3c..7a6d92562dc6 100644 --- a/tools/testing/selftests/bpf/config +++ b/tools/testing/selftests/bpf/config @@ -6,6 +6,7 @@ CONFIG_TEST_BPF=m CONFIG_CGROUP_BPF=y CONFIG_NETDEVSIM=m CONFIG_NET_CLS_ACT=y +CONFIG_NET_SCHED=y CONFIG_NET_SCH_INGRESS=y CONFIG_NET_IPIP=y CONFIG_IPV6=y -- 2.18.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

3
2
0 0

[PATCH v2 net-next 0/4] Updates for ipsec selftests

by Shannon Nelson

Fix up the existing ipsec selftest and add tests for the ipsec offload driver API. v2: addressed formatting nits in netdevsim from Jakub Kicinski Shannon Nelson (4): selftests: rtnetlink: clear the return code at start of ipsec test selftests: rtnetlink: use dummydev as a test device netdevsim: add ipsec offload testing selftests: rtnetlink: add ipsec offload API test drivers/net/netdevsim/Makefile | 4 + drivers/net/netdevsim/ipsec.c | 345 +++++++++++++++++++++++++++++++ drivers/net/netdevsim/netdev.c | 7 + drivers/net/netdevsim/netdevsim.h | 37 ++++ tools/testing/selftests/net/rtnetlink.sh | 132 +++++++++++- 5 files changed, 518 insertions(+), 7 deletions(-) create mode 100644 drivers/net/netdevsim/ipsec.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

2
5
0 0

[PATCH net-next 0/4] Updates for ipsec selftests

by Shannon Nelson

Fix up the existing ipsec selftest and add tests for the ipsec offload driver API. Shannon Nelson (4): selftests: rtnetlink: clear the return code at start of ipsec test selftests: rtnetlink: use dummydev as a test device netdevsim: add ipsec offload testing selftests: rtnetlink: add ipsec offload API test drivers/net/netdevsim/Makefile | 4 + drivers/net/netdevsim/ipsec.c | 345 +++++++++++++++++++++++++++++++ drivers/net/netdevsim/netdev.c | 7 + drivers/net/netdevsim/netdevsim.h | 37 ++++ tools/testing/selftests/net/rtnetlink.sh | 132 +++++++++++- 5 files changed, 518 insertions(+), 7 deletions(-) create mode 100644 drivers/net/netdevsim/ipsec.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

6 years, 6 months

2
8
0 0

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