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[PATCH 0/3] x86_64/ftrace: Emulate calls from int3 when patching functions

by Steven Rostedt

[ This is the non-RFC version. It went through and passed all my tests. If there's no objections I'm going to include this in my pull request. I still have patches in my INBOX that may still be included, so I need to run those through my tests as well, so a pull request wont be immediate. ] Nicolai Stange discovered that Live Kernel Patching can have unforseen consequences if tracing is enabled when there are functions that are patched. The reason being, is that Live Kernel patching is built on top of ftrace, which will have the patched functions call the live kernel trampoline directly, and that trampoline will modify the regs->ip address to return to the patched function. But in the transition between changing the call to the customized trampoline, the tracing code is needed to have its handler called an well, so the function fentry location must be changed from calling the live kernel patching trampoline, to the ftrace_reg_caller trampoline which will iterate through all the registered ftrace handlers for that function. During this transition, a break point is added to do the live code modifications. But if that break point is hit, it just skips calling any handler, and makes the call site act as a nop. For tracing, the worse that can happen is that you miss a function being traced, but for live kernel patching the affects are more severe, as the old buggy function is now called. To solve this, an int3_emulate_call() is created for x86_64 to allow ftrace on x86_64 to emulate the call to ftrace_regs_caller() which will make sure all the registered handlers to that function are still called. And this keeps live kernel patching happy! To mimimize the changes, and to avoid controversial patches, this only changes x86_64. Due to the way x86_32 implements the regs->sp the complexity of emulating calls on that platform is too much for stable patches, and live kernel patching does not support x86_32 anyway. Josh Poimboeuf (1): x86_64: Add gap to int3 to allow for call emulation Peter Zijlstra (2): x86_64: Allow breakpoints to emulate call instructions ftrace/x86_64: Emulate call function while updating in breakpoint handler ---- arch/x86/entry/entry_64.S | 18 ++++++++++++++++-- arch/x86/include/asm/text-patching.h | 28 ++++++++++++++++++++++++++++ arch/x86/kernel/ftrace.c | 32 +++++++++++++++++++++++++++----- 3 files changed, 71 insertions(+), 7 deletions(-)

6 years, 1 month

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next-20190508 kselftest results

by ci_notify＠linaro.org

Summary ------------------------------------------------------------------------ kernel: 5.1.0 git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git branch: master git commit: unknown git describe: next-20190508 Test details: https://qa-reports.linaro.org/lkft/linux-next-oe/build/next-20190508 Regressions (compared to build next-20190507) ------------------------------------------------------------------------ No regressions Fixes (compared to build next-20190507) ------------------------------------------------------------------------ No fixes In total: ------------------------------------------------------------------------ Ran 0 total tests in the following environments and test suites. pass 0 fail 0 xfail 0 skip 0 Environments -------------- - dragonboard-410c - arm64 - hi6220-hikey - arm64 - i386 - juno-r2 - arm64 - x15 - arm - x86_64 Test Suites ----------- Failures ------------------------------------------------------------------------ i386: x86: x15: dragonboard-410c: juno-r2: hi6220-hikey: Skips ------------------------------------------------------------------------ No skips -- Linaro LKFT https://lkft.linaro.org

6 years, 1 month

1
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next-20190507 kselftest results

by ci_notify＠linaro.org

Summary ------------------------------------------------------------------------ kernel: 5.1.0 git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git branch: master git commit: 00c3bc00f0cadbb48f2414370733892676511e79 git describe: next-20190507 Test details: https://qa-reports.linaro.org/lkft/linux-next-oe/build/next-20190507 Regressions (compared to build next-20190506) ------------------------------------------------------------------------ qemu_arm: kselftest: * cgroup_test_freezer x86_64: kselftest: * net_fib-onlink-tests.sh kselftest-vsyscall-mode-native: * bpf_test_sockmap x86_64: kselftest: * net_fib-onlink-tests.sh kselftest-vsyscall-mode-native: * bpf_test_sockmap Fixes (compared to build next-20190506) ------------------------------------------------------------------------ qemu_arm64: kselftest: * timers_set-timer-lat x86_64: kselftest: * bpf_test_sock_addr.sh * bpf_test_sockmap kselftest-vsyscall-mode-native: * net_fib-onlink-tests.sh x86_64: kselftest: * bpf_test_sock_addr.sh * bpf_test_sockmap kselftest-vsyscall-mode-native: * net_fib-onlink-tests.sh In total: ------------------------------------------------------------------------ Ran 1280 total tests in the following environments and test suites. pass 763 fail 420 xfail 0 skip 97 Environments -------------- - dragonboard-410c - arm64 - hi6220-hikey - arm64 - i386 - juno-r2 - arm64 - qemu_arm - qemu_arm64 - qemu_i386 - qemu_x86_64 - x15 - arm - x86_64 Test Suites ----------- * boot-lkft-kselftests-master-515 * kselftest * boot-lkft-kselftests-vsyscall-mode-native-master-515 * boot-lkft-kselftests-vsyscall-mode-none-master-515 * kselftest-vsyscall-mode-native * kselftest-vsyscall-mode-none Failures ------------------------------------------------------------------------ qemu_x86_64: * kselftest/binderfs_binderfs_test * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_sock_fields * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tc_tunnel.sh * kselftest/cgroup_test_core * kselftest/cpufreq_main.sh * kselftest/dma-buf_udmabuf * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_run_netsocktests * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_tls * kselftest/net_xfrm_policy.sh * kselftest/pidfd_pidfd_test * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rseq_run_param_test.sh * kselftest/rtc_rtctest * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests * kselftest/x86_fsgsbase_64 qemu_arm: * kselftest/binderfs_binderfs_test * kselftest/bpf_get_cgroup_id_user * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_select_reuseport * kselftest/bpf_test_sock_addr.sh * kselftest/bpf_test_sock_fields * kselftest/bpf_test_sockmap * kselftest/bpf_test_sysctl * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tcp_check_syncookie.sh * kselftest/bpf_test_tcpnotify_user * kselftest/bpf_test_tc_tunnel.sh * kselftest/bpf_test_verifier * kselftest/cgroup_test_core * kselftest/cgroup_test_freezer * kselftest/cpufreq_main.sh * kselftest/dma-buf_udmabuf * kselftest/firmware_fw_run_tests.sh * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_fib_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_reuseport_bpf_numa * kselftest/net_run_netsocktests * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_tls * kselftest/pidfd_pidfd_test * kselftest/proc_proc-self-map-files-002 * kselftest/proc_proc-self-syscall * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rtc_rtctest * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests qemu_i386: * kselftest/bpf_test_maps * kselftest/bpf_test_progs x15: * boot-lkft-kselftests-master-515/x15 qemu_arm64: * kselftest/binderfs_binderfs_test * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_maps * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_select_reuseport * kselftest/bpf_test_sock_fields * kselftest/bpf_test_sockmap * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tcp_check_syncookie.sh * kselftest/bpf_test_tc_tunnel.sh * kselftest/bpf_test_verifier * kselftest/cgroup_test_core * kselftest/cpufreq_main.sh * kselftest/dma-buf_udmabuf * kselftest/firmware_fw_run_tests.sh * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_fib_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_run_netsocktests * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_tls * kselftest/pidfd_pidfd_test * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rtc_rtctest * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests hi6220-hikey: * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_select_reuseport * kselftest/bpf_test_sock_addr.sh * kselftest/bpf_test_sock_fields * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tcp_check_syncookie.sh * kselftest/bpf_test_tc_tunnel.sh * kselftest/bpf_test_verifier * kselftest/cgroup_test_core * kselftest/dma-buf_udmabuf * kselftest/firmware_fw_run_tests.sh * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_fib_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_run_netsocktests * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_tls * kselftest/pidfd_pidfd_test * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rtc_rtctest * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh juno-r2: * boot-lkft-kselftests-master-515/juno-r2 x86: * kselftest-vsyscall-mode-native/binderfs_binderfs_test * kselftest-vsyscall-mode-native/bpf_test_flow_dissector.sh * kselftest-vsyscall-mode-native/bpf_test_lirc_mode2_user * kselftest-vsyscall-mode-native/bpf_test_lwt_ip_encap.sh * kselftest-vsyscall-mode-native/bpf_test_lwt_seg6local.sh * kselftest-vsyscall-mode-native/bpf_test_netcnt * kselftest-vsyscall-mode-native/bpf_test_progs * kselftest-vsyscall-mode-native/bpf_test_sock_fields * kselftest-vsyscall-mode-native/bpf_test_sockmap * kselftest-vsyscall-mode-native/bpf_test_tc_edt.sh * kselftest-vsyscall-mode-native/bpf_test_tc_tunnel.sh * kselftest-vsyscall-mode-native/cgroup_test_core * kselftest-vsyscall-mode-native/dma-buf_udmabuf * kselftest-vsyscall-mode-native/firmware_fw_run_tests.sh * kselftest-vsyscall-mode-native/kvm_clear_dirty_log_test * kselftest-vsyscall-mode-native/kvm_cr4_cpuid_sync_test * kselftest-vsyscall-mode-native/kvm_dirty_log_test * kselftest-vsyscall-mode-native/kvm_evmcs_test * kselftest-vsyscall-mode-native/kvm_hyperv_cpuid * kselftest-vsyscall-mode-native/kvm_platform_info_test * kselftest-vsyscall-mode-native/kvm_set_sregs_test * kselftest-vsyscall-mode-native/kvm_smm_test * kselftest-vsyscall-mode-native/kvm_state_test * kselftest-vsyscall-mode-native/kvm_sync_regs_test * kselftest-vsyscall-mode-native/kvm_vmx_close_while_nested_test * kselftest-vsyscall-mode-native/kvm_vmx_tsc_adjust_test * kselftest-vsyscall-mode-native/lib_bitmap.sh * kselftest-vsyscall-mode-native/lib_prime_numbers.sh * kselftest-vsyscall-mode-native/lib_printf.sh * kselftest-vsyscall-mode-native/lib_strscpy.sh * kselftest-vsyscall-mode-native/livepatch_test-callbacks.sh * kselftest-vsyscall-mode-native/livepatch_test-livepatch.sh * kselftest-vsyscall-mode-native/livepatch_test-shadow-vars.sh * kselftest-vsyscall-mode-native/membarrier_membarrier_test * kselftest-vsyscall-mode-native/net_fib_rule_tests.sh * kselftest-vsyscall-mode-native/net_ip_defrag.sh * kselftest-vsyscall-mode-native/net_msg_zerocopy.sh * kselftest-vsyscall-mode-native/net_pmtu.sh * kselftest-vsyscall-mode-native/net_psock_snd.sh * kselftest-vsyscall-mode-native/net_test_vxlan_under_vrf.sh * kselftest-vsyscall-mode-native/net_xfrm_policy.sh * kselftest-vsyscall-mode-native/pidfd_pidfd_test * kselftest-vsyscall-mode-native/pstore_pstore_tests * kselftest-vsyscall-mode-native/rseq_basic_percpu_ops_test * kselftest-vsyscall-mode-native/rseq_basic_test * kselftest-vsyscall-mode-native/rseq_param_test * kselftest-vsyscall-mode-native/rseq_param_test_benchmark * kselftest-vsyscall-mode-native/rseq_param_test_compare_twice * kselftest-vsyscall-mode-native/rseq_run_param_test.sh * kselftest-vsyscall-mode-native/rtc_rtctest * kselftest-vsyscall-mode-native/seccomp_seccomp_bpf * kselftest-vsyscall-mode-native/tpm2_test_smoke.sh * kselftest-vsyscall-mode-native/tpm2_test_space.sh * kselftest-vsyscall-mode-native/vm_run_vmtests * kselftest-vsyscall-mode-native/x86_mpx-mini-test_64 * kselftest-vsyscall-mode-none/binderfs_binderfs_test * kselftest-vsyscall-mode-none/bpf_test_flow_dissector.sh * kselftest-vsyscall-mode-none/bpf_test_lirc_mode2_user * kselftest-vsyscall-mode-none/bpf_test_lwt_ip_encap.sh * kselftest-vsyscall-mode-none/bpf_test_lwt_seg6local.sh * kselftest-vsyscall-mode-none/bpf_test_netcnt * kselftest-vsyscall-mode-none/bpf_test_progs * kselftest-vsyscall-mode-none/bpf_test_sock_addr.sh * kselftest-vsyscall-mode-none/bpf_test_sock_fields * kselftest-vsyscall-mode-none/bpf_test_sockmap * kselftest-vsyscall-mode-none/bpf_test_tc_edt.sh * kselftest-vsyscall-mode-none/bpf_test_tc_tunnel.sh * kselftest-vsyscall-mode-none/cgroup_test_core * kselftest-vsyscall-mode-none/dma-buf_udmabuf * kselftest-vsyscall-mode-none/firmware_fw_run_tests.sh * kselftest-vsyscall-mode-none/kvm_clear_dirty_log_test * kselftest-vsyscall-mode-none/kvm_cr4_cpuid_sync_test * kselftest-vsyscall-mode-none/kvm_dirty_log_test * kselftest-vsyscall-mode-none/kvm_evmcs_test * kselftest-vsyscall-mode-none/kvm_hyperv_cpuid * kselftest-vsyscall-mode-none/kvm_platform_info_test * kselftest-vsyscall-mode-none/kvm_set_sregs_test * kselftest-vsyscall-mode-none/kvm_smm_test * kselftest-vsyscall-mode-none/kvm_state_test * kselftest-vsyscall-mode-none/kvm_sync_regs_test * kselftest-vsyscall-mode-none/kvm_vmx_close_while_nested_test * kselftest-vsyscall-mode-none/kvm_vmx_tsc_adjust_test * kselftest-vsyscall-mode-none/lib_bitmap.sh * kselftest-vsyscall-mode-none/lib_prime_numbers.sh * kselftest-vsyscall-mode-none/lib_printf.sh * kselftest-vsyscall-mode-none/lib_strscpy.sh * kselftest-vsyscall-mode-none/livepatch_test-callbacks.sh * kselftest-vsyscall-mode-none/livepatch_test-livepatch.sh * kselftest-vsyscall-mode-none/livepatch_test-shadow-vars.sh * kselftest-vsyscall-mode-none/membarrier_membarrier_test * kselftest-vsyscall-mode-none/net_fib-onlink-tests.sh * kselftest-vsyscall-mode-none/net_fib_rule_tests.sh * kselftest-vsyscall-mode-none/net_ip_defrag.sh * kselftest-vsyscall-mode-none/net_msg_zerocopy.sh * kselftest-vsyscall-mode-none/net_pmtu.sh * kselftest-vsyscall-mode-none/net_psock_snd.sh * kselftest-vsyscall-mode-none/net_test_vxlan_under_vrf.sh * kselftest-vsyscall-mode-none/net_xfrm_policy.sh * kselftest-vsyscall-mode-none/pidfd_pidfd_test * kselftest-vsyscall-mode-none/pstore_pstore_tests * kselftest-vsyscall-mode-none/rseq_basic_percpu_ops_test * kselftest-vsyscall-mode-none/rseq_basic_test * kselftest-vsyscall-mode-none/rseq_param_test * kselftest-vsyscall-mode-none/rseq_param_test_benchmark * kselftest-vsyscall-mode-none/rseq_param_test_compare_twice * kselftest-vsyscall-mode-none/rseq_run_param_test.sh * kselftest-vsyscall-mode-none/seccomp_seccomp_bpf * kselftest-vsyscall-mode-none/timestamping_txtimestamp.sh * kselftest-vsyscall-mode-none/tpm2_test_smoke.sh * kselftest-vsyscall-mode-none/tpm2_test_space.sh * kselftest-vsyscall-mode-none/vm_run_vmtests * kselftest-vsyscall-mode-none/x86_mpx-mini-test_64 * kselftest/binderfs_binderfs_test * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_sock_fields * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tc_tunnel.sh * kselftest/cgroup_test_core * kselftest/dma-buf_udmabuf * kselftest/firmware_fw_run_tests.sh * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_xfrm_policy.sh * kselftest/pidfd_pidfd_test * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rseq_run_param_test.sh * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests * kselftest/x86_fsgsbase_64 * kselftest/x86_mpx-mini-test_64 i386: * kselftest/bpf_test_maps * kselftest/bpf_test_progs dragonboard-410c: * boot-lkft-kselftests-master-515/dragonboard-410c Skips ------------------------------------------------------------------------ No skips -- Linaro LKFT https://lkft.linaro.org

6 years, 1 month

1
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[RFC][PATCH 0/3] x86_64/ftrace: Emulate calls from int3 when patching functions

by Steven Rostedt

Nicolai Stange discovered that Live Kernel Patching can have unforseen consequences if tracing is enabled when there are functions that are patched. The reason being, is that Live Kernel patching is built on top of ftrace, which will have the patched functions call the live kernel trampoline directly, and that trampoline will modify the regs->ip address to return to the patched function. But in the transition between changing the call to the customized trampoline, the tracing code is needed to have its handler called an well, so the function fentry location must be changed from calling the live kernel patching trampoline, to the ftrace_reg_caller trampoline which will iterate through all the registered ftrace handlers for that function. During this transition, a break point is added to do the live code modifications. But if that break point is hit, it just skips calling any handler, and makes the call site act as a nop. For tracing, the worse that can happen is that you miss a function being traced, but for live kernel patching the affects are more severe, as the old buggy function is now called. To solve this, an int3_emulate_call() is created for x86_64 to allow ftrace on x86_64 to emulate the call to ftrace_regs_caller() which will make sure all the registered handlers to that function are still called. And this keeps live kernel patching happy! To mimimize the changes, and to avoid controversial patches, this only changes x86_64. Due to the way x86_32 implements the regs->sp the complexity of emulating calls on that platform is too much for stable patches, and live kernel patching does not support x86_32 anyway. Josh Poimboeuf (1): x86_64: Add gap to int3 to allow for call emulation Peter Zijlstra (2): x86_64: Allow breakpoints to emulate call functions ftrace/x86_64: Emulate call function while updating in breakpoint handler ---- arch/x86/entry/entry_64.S | 18 ++++++++++++++++-- arch/x86/include/asm/text-patching.h | 22 ++++++++++++++++++++++ arch/x86/kernel/ftrace.c | 32 +++++++++++++++++++++++++++----- 3 files changed, 65 insertions(+), 7 deletions(-)

6 years, 1 month

2
12
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next-20190506 kselftest results

by ci_notify＠linaro.org

Summary ------------------------------------------------------------------------ kernel: 5.1.0-rc7 git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git branch: master git commit: fcdb095ad0016d77d3729dcf8ea915ca4b80fd8b git describe: next-20190506 Test details: https://qa-reports.linaro.org/lkft/linux-next-oe/build/next-20190506 Regressions (compared to build next-20190503) ------------------------------------------------------------------------ qemu_arm64: kselftest: * bpf_test_maps * timers_set-timer-lat qemu_i386: kselftest: * bpf_test_maps x15 - arm: kselftest: * bpf_test_maps x86_64: kselftest: * x86_fsgsbase_64 Fixes (compared to build next-20190503) ------------------------------------------------------------------------ qemu_arm: kselftest: * bpf_test_maps x15 - arm: kselftest: * cgroup_test_freezer x86_64: kselftest: * net_fib-onlink-tests.sh kselftest-vsyscall-mode-native: * bpf_test_sockmap * x86_fsgsbase_64 x86_64: kselftest: * net_fib-onlink-tests.sh kselftest-vsyscall-mode-native: * bpf_test_sockmap * x86_fsgsbase_64 In total: ------------------------------------------------------------------------ Ran 1461 total tests in the following environments and test suites. pass 862 fail 485 xfail 0 skip 114 Environments -------------- - dragonboard-410c - arm64 - hi6220-hikey - arm64 - i386 - juno-r2 - arm64 - qemu_arm - qemu_arm64 - qemu_i386 - qemu_x86_64 - x15 - arm - x86_64 Test Suites ----------- * boot-lkft-kselftests-master-514 * kselftest * boot-lkft-kselftests-vsyscall-mode-native-master-514 * boot-lkft-kselftests-vsyscall-mode-none-master-514 * kselftest-vsyscall-mode-native * kselftest-vsyscall-mode-none Failures ------------------------------------------------------------------------ qemu_i386: * kselftest/bpf_test_maps * kselftest/bpf_test_progs qemu_arm: * kselftest/binderfs_binderfs_test * kselftest/bpf_get_cgroup_id_user * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_select_reuseport * kselftest/bpf_test_sock_addr.sh * kselftest/bpf_test_sock_fields * kselftest/bpf_test_sockmap * kselftest/bpf_test_sysctl * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tcp_check_syncookie.sh * kselftest/bpf_test_tcpnotify_user * kselftest/bpf_test_tc_tunnel.sh * kselftest/bpf_test_verifier * kselftest/cgroup_test_core * kselftest/cpufreq_main.sh * kselftest/dma-buf_udmabuf * kselftest/firmware_fw_run_tests.sh * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_fib_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_reuseport_bpf_numa * kselftest/net_run_netsocktests * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_tls * kselftest/pidfd_pidfd_test * kselftest/proc_proc-self-map-files-002 * kselftest/proc_proc-self-syscall * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rtc_rtctest * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests qemu_x86_64: * kselftest/binderfs_binderfs_test * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_sock_fields * kselftest/bpf_test_tc_tunnel.sh * kselftest/cgroup_test_core * kselftest/cpufreq_main.sh * kselftest/dma-buf_udmabuf * kselftest/firmware_fw_run_tests.sh * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_run_netsocktests * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_tls * kselftest/net_xfrm_policy.sh * kselftest/pidfd_pidfd_test * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rseq_run_param_test.sh * kselftest/rtc_rtctest * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests * kselftest/x86_fsgsbase_64 x15: * kselftest/binderfs_binderfs_test * kselftest/bpf_get_cgroup_id_user * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_maps * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_select_reuseport * kselftest/bpf_test_sock_addr.sh * kselftest/bpf_test_sock_fields * kselftest/bpf_test_sockmap * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tcp_check_syncookie.sh * kselftest/bpf_test_tcpnotify_user * kselftest/bpf_test_tc_tunnel.sh * kselftest/bpf_test_verifier * kselftest/cgroup_test_core * kselftest/dma-buf_udmabuf * kselftest/firmware_fw_run_tests.sh * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_fib_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_reuseport_bpf_numa * kselftest/net_run_netsocktests * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_tls * kselftest/pidfd_pidfd_test * kselftest/proc_proc-self-map-files-002 * kselftest/proc_proc-self-syscall * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rtc_rtctest * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests qemu_arm64: * kselftest/binderfs_binderfs_test * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_maps * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_select_reuseport * kselftest/bpf_test_sock_fields * kselftest/bpf_test_sockmap * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tcp_check_syncookie.sh * kselftest/bpf_test_tc_tunnel.sh * kselftest/bpf_test_verifier * kselftest/cgroup_test_core * kselftest/cpufreq_main.sh * kselftest/dma-buf_udmabuf * kselftest/firmware_fw_run_tests.sh * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_fib_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_run_netsocktests * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_tls * kselftest/pidfd_pidfd_test * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rtc_rtctest * kselftest/seccomp_seccomp_bpf * kselftest/timers_set-timer-lat * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests hi6220-hikey: * kselftest/binderfs_binderfs_test * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_progs * kselftest/bpf_test_select_reuseport * kselftest/bpf_test_sock_addr.sh * kselftest/bpf_test_sock_fields * kselftest/bpf_test_sockmap * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tcp_check_syncookie.sh * kselftest/bpf_test_tc_tunnel.sh * kselftest/bpf_test_verifier * kselftest/cgroup_test_core * kselftest/dma-buf_udmabuf * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib-onlink-tests.sh * kselftest/net_fib_rule_tests.sh * kselftest/net_fib_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_run_netsocktests * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_tls * kselftest/pidfd_pidfd_test * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rtc_rtctest * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests juno-r2: dragonboard-410c: * boot-lkft-kselftests-master-514/dragonboard-410c i386: * kselftest/bpf_test_maps * kselftest/bpf_test_progs x86: * kselftest-vsyscall-mode-none/binderfs_binderfs_test * kselftest-vsyscall-mode-none/bpf_test_flow_dissector.sh * kselftest-vsyscall-mode-none/bpf_test_lirc_mode2_user * kselftest-vsyscall-mode-none/bpf_test_lwt_ip_encap.sh * kselftest-vsyscall-mode-none/bpf_test_lwt_seg6local.sh * kselftest-vsyscall-mode-none/bpf_test_netcnt * kselftest-vsyscall-mode-none/bpf_test_progs * kselftest-vsyscall-mode-none/bpf_test_sock_addr.sh * kselftest-vsyscall-mode-none/bpf_test_sock_fields * kselftest-vsyscall-mode-none/bpf_test_sockmap * kselftest-vsyscall-mode-none/bpf_test_tc_edt.sh * kselftest-vsyscall-mode-none/bpf_test_tc_tunnel.sh * kselftest-vsyscall-mode-none/cgroup_test_core * kselftest-vsyscall-mode-none/firmware_fw_run_tests.sh * kselftest-vsyscall-mode-none/kvm_clear_dirty_log_test * kselftest-vsyscall-mode-none/kvm_cr4_cpuid_sync_test * kselftest-vsyscall-mode-none/kvm_dirty_log_test * kselftest-vsyscall-mode-none/kvm_evmcs_test * kselftest-vsyscall-mode-none/kvm_hyperv_cpuid * kselftest-vsyscall-mode-none/kvm_platform_info_test * kselftest-vsyscall-mode-none/kvm_set_sregs_test * kselftest-vsyscall-mode-none/kvm_smm_test * kselftest-vsyscall-mode-none/kvm_state_test * kselftest-vsyscall-mode-none/kvm_sync_regs_test * kselftest-vsyscall-mode-none/kvm_vmx_close_while_nested_test * kselftest-vsyscall-mode-none/kvm_vmx_tsc_adjust_test * kselftest-vsyscall-mode-none/lib_bitmap.sh * kselftest-vsyscall-mode-none/lib_prime_numbers.sh * kselftest-vsyscall-mode-none/lib_printf.sh * kselftest-vsyscall-mode-none/livepatch_test-callbacks.sh * kselftest-vsyscall-mode-none/livepatch_test-livepatch.sh * kselftest-vsyscall-mode-none/livepatch_test-shadow-vars.sh * kselftest-vsyscall-mode-none/membarrier_membarrier_test * kselftest-vsyscall-mode-none/net_fib-onlink-tests.sh * kselftest-vsyscall-mode-none/net_fib_rule_tests.sh * kselftest-vsyscall-mode-none/net_ip_defrag.sh * kselftest-vsyscall-mode-none/net_msg_zerocopy.sh * kselftest-vsyscall-mode-none/net_pmtu.sh * kselftest-vsyscall-mode-none/net_psock_snd.sh * kselftest-vsyscall-mode-none/net_test_vxlan_under_vrf.sh * kselftest-vsyscall-mode-none/net_xfrm_policy.sh * kselftest-vsyscall-mode-none/pidfd_pidfd_test * kselftest-vsyscall-mode-none/pstore_pstore_tests * kselftest-vsyscall-mode-none/rseq_basic_percpu_ops_test * kselftest-vsyscall-mode-none/rseq_basic_test * kselftest-vsyscall-mode-none/rseq_param_test * kselftest-vsyscall-mode-none/rseq_param_test_benchmark * kselftest-vsyscall-mode-none/rseq_param_test_compare_twice * kselftest-vsyscall-mode-none/rseq_run_param_test.sh * kselftest-vsyscall-mode-none/seccomp_seccomp_bpf * kselftest-vsyscall-mode-none/timestamping_txtimestamp.sh * kselftest-vsyscall-mode-none/tpm2_test_smoke.sh * kselftest-vsyscall-mode-none/tpm2_test_space.sh * kselftest-vsyscall-mode-none/vm_run_vmtests * kselftest-vsyscall-mode-none/x86_mpx-mini-test_64 * kselftest-vsyscall-mode-native/binderfs_binderfs_test * kselftest-vsyscall-mode-native/bpf_test_flow_dissector.sh * kselftest-vsyscall-mode-native/bpf_test_lirc_mode2_user * kselftest-vsyscall-mode-native/bpf_test_lwt_ip_encap.sh * kselftest-vsyscall-mode-native/bpf_test_lwt_seg6local.sh * kselftest-vsyscall-mode-native/bpf_test_netcnt * kselftest-vsyscall-mode-native/bpf_test_progs * kselftest-vsyscall-mode-native/bpf_test_sock_fields * kselftest-vsyscall-mode-native/bpf_test_tc_tunnel.sh * kselftest-vsyscall-mode-native/cgroup_test_core * kselftest-vsyscall-mode-native/dma-buf_udmabuf * kselftest-vsyscall-mode-native/firmware_fw_run_tests.sh * kselftest-vsyscall-mode-native/kvm_clear_dirty_log_test * kselftest-vsyscall-mode-native/kvm_dirty_log_test * kselftest-vsyscall-mode-native/kvm_evmcs_test * kselftest-vsyscall-mode-native/kvm_hyperv_cpuid * kselftest-vsyscall-mode-native/kvm_platform_info_test * kselftest-vsyscall-mode-native/kvm_set_sregs_test * kselftest-vsyscall-mode-native/kvm_smm_test * kselftest-vsyscall-mode-native/kvm_state_test * kselftest-vsyscall-mode-native/kvm_sync_regs_test * kselftest-vsyscall-mode-native/kvm_vmx_close_while_nested_test * kselftest-vsyscall-mode-native/kvm_vmx_tsc_adjust_test * kselftest-vsyscall-mode-native/lib_bitmap.sh * kselftest-vsyscall-mode-native/lib_prime_numbers.sh * kselftest-vsyscall-mode-native/lib_printf.sh * kselftest-vsyscall-mode-native/lib_strscpy.sh * kselftest-vsyscall-mode-native/livepatch_test-callbacks.sh * kselftest-vsyscall-mode-native/livepatch_test-livepatch.sh * kselftest-vsyscall-mode-native/livepatch_test-shadow-vars.sh * kselftest-vsyscall-mode-native/membarrier_membarrier_test * kselftest-vsyscall-mode-native/net_fib-onlink-tests.sh * kselftest-vsyscall-mode-native/net_fib_rule_tests.sh * kselftest-vsyscall-mode-native/net_ip_defrag.sh * kselftest-vsyscall-mode-native/net_msg_zerocopy.sh * kselftest-vsyscall-mode-native/net_pmtu.sh * kselftest-vsyscall-mode-native/net_psock_snd.sh * kselftest-vsyscall-mode-native/net_test_vxlan_under_vrf.sh * kselftest-vsyscall-mode-native/net_xfrm_policy.sh * kselftest-vsyscall-mode-native/pidfd_pidfd_test * kselftest-vsyscall-mode-native/pstore_pstore_tests * kselftest-vsyscall-mode-native/rseq_basic_percpu_ops_test * kselftest-vsyscall-mode-native/rseq_basic_test * kselftest-vsyscall-mode-native/rseq_param_test * kselftest-vsyscall-mode-native/rseq_param_test_benchmark * kselftest-vsyscall-mode-native/rseq_param_test_compare_twice * kselftest-vsyscall-mode-native/rseq_run_param_test.sh * kselftest-vsyscall-mode-native/rtc_rtctest * kselftest-vsyscall-mode-native/seccomp_seccomp_bpf * kselftest-vsyscall-mode-native/timestamping_txtimestamp.sh * kselftest-vsyscall-mode-native/tpm2_test_smoke.sh * kselftest-vsyscall-mode-native/tpm2_test_space.sh * kselftest-vsyscall-mode-native/vm_run_vmtests * kselftest-vsyscall-mode-native/x86_mpx-mini-test_64 * kselftest/binderfs_binderfs_test * kselftest/bpf_test_flow_dissector.sh * kselftest/bpf_test_lirc_mode2_user * kselftest/bpf_test_lwt_ip_encap.sh * kselftest/bpf_test_lwt_seg6local.sh * kselftest/bpf_test_netcnt * kselftest/bpf_test_progs * kselftest/bpf_test_sock_addr.sh * kselftest/bpf_test_sock_fields * kselftest/bpf_test_sockmap * kselftest/bpf_test_tc_edt.sh * kselftest/bpf_test_tc_tunnel.sh * kselftest/cgroup_test_core * kselftest/dma-buf_udmabuf * kselftest/firmware_fw_run_tests.sh * kselftest/kvm_clear_dirty_log_test * kselftest/kvm_cr4_cpuid_sync_test * kselftest/kvm_dirty_log_test * kselftest/kvm_evmcs_test * kselftest/kvm_hyperv_cpuid * kselftest/kvm_platform_info_test * kselftest/kvm_set_sregs_test * kselftest/kvm_smm_test * kselftest/kvm_state_test * kselftest/kvm_sync_regs_test * kselftest/kvm_vmx_close_while_nested_test * kselftest/kvm_vmx_tsc_adjust_test * kselftest/lib_bitmap.sh * kselftest/lib_prime_numbers.sh * kselftest/lib_printf.sh * kselftest/lib_strscpy.sh * kselftest/livepatch_test-callbacks.sh * kselftest/livepatch_test-livepatch.sh * kselftest/livepatch_test-shadow-vars.sh * kselftest/membarrier_membarrier_test * kselftest/net_fib_rule_tests.sh * kselftest/net_ip_defrag.sh * kselftest/net_msg_zerocopy.sh * kselftest/net_pmtu.sh * kselftest/net_psock_snd.sh * kselftest/net_test_vxlan_under_vrf.sh * kselftest/net_xfrm_policy.sh * kselftest/pidfd_pidfd_test * kselftest/pstore_pstore_tests * kselftest/rseq_basic_percpu_ops_test * kselftest/rseq_basic_test * kselftest/rseq_param_test * kselftest/rseq_param_test_benchmark * kselftest/rseq_param_test_compare_twice * kselftest/rseq_run_param_test.sh * kselftest/seccomp_seccomp_bpf * kselftest/timestamping_txtimestamp.sh * kselftest/tpm2_test_smoke.sh * kselftest/tpm2_test_space.sh * kselftest/vm_run_vmtests * kselftest/x86_fsgsbase_64 * kselftest/x86_mpx-mini-test_64 Skips ------------------------------------------------------------------------ No skips -- Linaro LKFT https://lkft.linaro.org

6 years, 1 month

1
0
0 0

[PATCH v2] kheaders: Move from proc to sysfs

by Joel Fernandes (Google)

The kheaders archive consisting of the kernel headers used for compiling bpf programs is in /proc. However there is concern that moving it here will make it permanent. Let us move it to /sys/kernel as discussed [1]. [1] https://lore.kernel.org/patchwork/patch/1067310/#1265969 Suggested-by: Steven Rostedt <rostedt(a)goodmis.org> Signed-off-by: Joel Fernandes (Google) <joel(a)joelfernandes.org> --- This patch applies on top of the previous patch that was applied to the driver tree: https://lore.kernel.org/patchwork/patch/1067310/ v1->v2: Fixed some kconfig nits (Masami). init/Kconfig | 16 ++++----- kernel/Makefile | 4 +-- kernel/{gen_ikh_data.sh => gen_kheaders.sh} | 2 +- kernel/kheaders.c | 40 +++++++++------------ 4 files changed, 26 insertions(+), 36 deletions(-) rename kernel/{gen_ikh_data.sh => gen_kheaders.sh} (98%) diff --git a/init/Kconfig b/init/Kconfig index 26a364a95b57..c3661991b089 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -579,15 +579,13 @@ config IKCONFIG_PROC This option enables access to the kernel configuration file through /proc/config.gz. -config IKHEADERS_PROC - tristate "Enable kernel header artifacts through /proc/kheaders.tar.xz" - depends on PROC_FS - help - This option enables access to the kernel header and other artifacts that - are generated during the build process. These can be used to build eBPF - tracing programs, or similar programs. If you build the headers as a - module, a module called kheaders.ko is built which can be loaded on-demand - to get access to the headers. +config IKHEADERS + tristate "Enable kernel headers through /sys/kernel/kheaders.tar.xz" + help + This option enables access to the in-kernel headers that are generated during + the build process. These can be used to build eBPF tracing programs, + or similar programs. If you build the headers as a module, a module called + kheaders.ko is built which can be loaded on-demand to get access to headers. config LOG_BUF_SHIFT int "Kernel log buffer size (16 => 64KB, 17 => 128KB)" diff --git a/kernel/Makefile b/kernel/Makefile index 12399614c350..b32a558fae2f 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -70,7 +70,7 @@ obj-$(CONFIG_UTS_NS) += utsname.o obj-$(CONFIG_USER_NS) += user_namespace.o obj-$(CONFIG_PID_NS) += pid_namespace.o obj-$(CONFIG_IKCONFIG) += configs.o -obj-$(CONFIG_IKHEADERS_PROC) += kheaders.o +obj-$(CONFIG_IKHEADERS) += kheaders.o obj-$(CONFIG_SMP) += stop_machine.o obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o obj-$(CONFIG_AUDIT) += audit.o auditfilter.o @@ -126,7 +126,7 @@ $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE $(obj)/kheaders.o: $(obj)/kheaders_data.tar.xz quiet_cmd_genikh = CHK $(obj)/kheaders_data.tar.xz -cmd_genikh = $(srctree)/kernel/gen_ikh_data.sh $@ +cmd_genikh = $(srctree)/kernel/gen_kheaders.sh $@ $(obj)/kheaders_data.tar.xz: FORCE $(call cmd,genikh) diff --git a/kernel/gen_ikh_data.sh b/kernel/gen_kheaders.sh similarity index 98% rename from kernel/gen_ikh_data.sh rename to kernel/gen_kheaders.sh index 591a94f7b387..581b83534587 100755 --- a/kernel/gen_ikh_data.sh +++ b/kernel/gen_kheaders.sh @@ -2,7 +2,7 @@ # SPDX-License-Identifier: GPL-2.0 # This script generates an archive consisting of kernel headers -# for CONFIG_IKHEADERS_PROC. +# for CONFIG_IKHEADERS. set -e spath="$(dirname "$(readlink -f "$0")")" kroot="$spath/.." diff --git a/kernel/kheaders.c b/kernel/kheaders.c index 70ae6052920d..6a16f8f6898d 100644 --- a/kernel/kheaders.c +++ b/kernel/kheaders.c @@ -8,9 +8,8 @@ #include <linux/kernel.h> #include <linux/module.h> -#include <linux/proc_fs.h> +#include <linux/kobject.h> #include <linux/init.h> -#include <linux/uaccess.h> /* * Define kernel_headers_data and kernel_headers_data_end, within which the @@ -31,39 +30,32 @@ extern char kernel_headers_data; extern char kernel_headers_data_end; static ssize_t -ikheaders_read_current(struct file *file, char __user *buf, - size_t len, loff_t *offset) +ikheaders_read(struct file *file, struct kobject *kobj, + struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t len) { - return simple_read_from_buffer(buf, len, offset, - &kernel_headers_data, - &kernel_headers_data_end - - &kernel_headers_data); + memcpy(buf, &kernel_headers_data + off, len); + return len; } -static const struct file_operations ikheaders_file_ops = { - .read = ikheaders_read_current, - .llseek = default_llseek, +static struct bin_attribute kheaders_attr __ro_after_init = { + .attr = { + .name = "kheaders.tar.xz", + .mode = S_IRUGO, + }, + .read = &ikheaders_read, }; static int __init ikheaders_init(void) { - struct proc_dir_entry *entry; - - /* create the current headers file */ - entry = proc_create("kheaders.tar.xz", S_IRUGO, NULL, - &ikheaders_file_ops); - if (!entry) - return -ENOMEM; - - proc_set_size(entry, - &kernel_headers_data_end - - &kernel_headers_data); - return 0; + kheaders_attr.size = (&kernel_headers_data_end - + &kernel_headers_data); + return sysfs_create_bin_file(kernel_kobj, &kheaders_attr); } static void __exit ikheaders_cleanup(void) { - remove_proc_entry("kheaders.tar.xz", NULL); + sysfs_remove_bin_file(kernel_kobj, &kheaders_attr); } module_init(ikheaders_init); -- 2.21.0.1020.gf2820cf01a-goog

6 years, 1 month

5
10
0 0

[PATCH AUTOSEL 3.18 09/10] selftests/net: correct the return value for run_netsocktests

by Sasha Levin

From: Po-Hsu Lin <po-hsu.lin(a)canonical.com> [ Upstream commit 30c04d796b693e22405c38e9b78e9a364e4c77e6 ] The run_netsocktests will be marked as passed regardless the actual test result from the ./socket: selftests: net: run_netsocktests ======================================== -------------------- running socket test -------------------- [FAIL] ok 1..6 selftests: net: run_netsocktests [PASS] This is because the test script itself has been successfully executed. Fix this by exit 1 when the test failed. Signed-off-by: Po-Hsu Lin <po-hsu.lin(a)canonical.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/net/run_netsocktests | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/run_netsocktests b/tools/testing/selftests/net/run_netsocktests index c09a682df56a..19486dab2379 100644 --- a/tools/testing/selftests/net/run_netsocktests +++ b/tools/testing/selftests/net/run_netsocktests @@ -6,7 +6,7 @@ echo "--------------------" ./socket if [ $? -ne 0 ]; then echo "[FAIL]" + exit 1 else echo "[PASS]" fi - -- 2.20.1

6 years, 1 month

1
0
0 0

[PATCH AUTOSEL 4.4 13/14] selftests/net: correct the return value for run_netsocktests

by Sasha Levin

From: Po-Hsu Lin <po-hsu.lin(a)canonical.com> [ Upstream commit 30c04d796b693e22405c38e9b78e9a364e4c77e6 ] The run_netsocktests will be marked as passed regardless the actual test result from the ./socket: selftests: net: run_netsocktests ======================================== -------------------- running socket test -------------------- [FAIL] ok 1..6 selftests: net: run_netsocktests [PASS] This is because the test script itself has been successfully executed. Fix this by exit 1 when the test failed. Signed-off-by: Po-Hsu Lin <po-hsu.lin(a)canonical.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/net/run_netsocktests | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/run_netsocktests b/tools/testing/selftests/net/run_netsocktests index 16058bbea7a8..c195b4478662 100755 --- a/tools/testing/selftests/net/run_netsocktests +++ b/tools/testing/selftests/net/run_netsocktests @@ -6,7 +6,7 @@ echo "--------------------" ./socket if [ $? -ne 0 ]; then echo "[FAIL]" + exit 1 else echo "[PASS]" fi - -- 2.20.1

6 years, 1 month

1
0
0 0

[PATCH AUTOSEL 4.9 21/25] selftests/net: correct the return value for run_netsocktests

by Sasha Levin

From: Po-Hsu Lin <po-hsu.lin(a)canonical.com> [ Upstream commit 30c04d796b693e22405c38e9b78e9a364e4c77e6 ] The run_netsocktests will be marked as passed regardless the actual test result from the ./socket: selftests: net: run_netsocktests ======================================== -------------------- running socket test -------------------- [FAIL] ok 1..6 selftests: net: run_netsocktests [PASS] This is because the test script itself has been successfully executed. Fix this by exit 1 when the test failed. Signed-off-by: Po-Hsu Lin <po-hsu.lin(a)canonical.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/net/run_netsocktests | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/run_netsocktests b/tools/testing/selftests/net/run_netsocktests index 16058bbea7a8..c195b4478662 100755 --- a/tools/testing/selftests/net/run_netsocktests +++ b/tools/testing/selftests/net/run_netsocktests @@ -6,7 +6,7 @@ echo "--------------------" ./socket if [ $? -ne 0 ]; then echo "[FAIL]" + exit 1 else echo "[PASS]" fi - -- 2.20.1

6 years, 1 month

1
0
0 0

[PATCH AUTOSEL 4.9 16/25] selftests: netfilter: check icmp pkttoobig errors are set as related

by Sasha Levin

From: Florian Westphal <fw(a)strlen.de> [ Upstream commit becf2319f320cae43e20cf179cc51a355a0deb5f ] When an icmp error such as pkttoobig is received, conntrack checks if the "inner" header (header of packet that did not fit link mtu) is matches an existing connection, and, if so, sets that packet as being related to the conntrack entry it found. It was recently reported that this "related" setting also works if the inner header is from another, different connection (i.e., artificial/forged icmp error). Add a test, followup patch will add additional "inner dst matches outer dst in reverse direction" check before setting related state. Link: https://www.synacktiv.com/posts/systems/icmp-reachable.html Signed-off-by: Florian Westphal <fw(a)strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo(a)netfilter.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/netfilter/Makefile | 2 +- .../netfilter/conntrack_icmp_related.sh | 283 ++++++++++++++++++ 2 files changed, 284 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/netfilter/conntrack_icmp_related.sh diff --git a/tools/testing/selftests/netfilter/Makefile b/tools/testing/selftests/netfilter/Makefile index c9ff2b47bd1c..a37cb1192c6a 100644 --- a/tools/testing/selftests/netfilter/Makefile +++ b/tools/testing/selftests/netfilter/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for netfilter selftests -TEST_PROGS := nft_trans_stress.sh nft_nat.sh +TEST_PROGS := nft_trans_stress.sh nft_nat.sh conntrack_icmp_related.sh include ../lib.mk diff --git a/tools/testing/selftests/netfilter/conntrack_icmp_related.sh b/tools/testing/selftests/netfilter/conntrack_icmp_related.sh new file mode 100755 index 000000000000..b48e1833bc89 --- /dev/null +++ b/tools/testing/selftests/netfilter/conntrack_icmp_related.sh @@ -0,0 +1,283 @@ +#!/bin/bash +# +# check that ICMP df-needed/pkttoobig icmp are set are set as related +# state +# +# Setup is: +# +# nsclient1 -> nsrouter1 -> nsrouter2 -> nsclient2 +# MTU 1500, except for nsrouter2 <-> nsclient2 link (1280). +# ping nsclient2 from nsclient1, checking that conntrack did set RELATED +# 'fragmentation needed' icmp packet. +# +# In addition, nsrouter1 will perform IP masquerading, i.e. also +# check the icmp errors are propagated to the correct host as per +# nat of "established" icmp-echo "connection". + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 +ret=0 + +nft --version > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without nft tool" + exit $ksft_skip +fi + +ip -Version > /dev/null 2>&1 +if [ $? -ne 0 ];then + echo "SKIP: Could not run test without ip tool" + exit $ksft_skip +fi + +cleanup() { + for i in 1 2;do ip netns del nsclient$i;done + for i in 1 2;do ip netns del nsrouter$i;done +} + +ipv4() { + echo -n 192.168.$1.2 +} + +ipv6 () { + echo -n dead:$1::2 +} + +check_counter() +{ + ns=$1 + name=$2 + expect=$3 + local lret=0 + + cnt=$(ip netns exec $ns nft list counter inet filter "$name" | grep -q "$expect") + if [ $? -ne 0 ]; then + echo "ERROR: counter $name in $ns has unexpected value (expected $expect)" 1>&2 + ip netns exec $ns nft list counter inet filter "$name" 1>&2 + lret=1 + fi + + return $lret +} + +check_unknown() +{ + expect="packets 0 bytes 0" + for n in nsclient1 nsclient2 nsrouter1 nsrouter2; do + check_counter $n "unknown" "$expect" + if [ $? -ne 0 ] ;then + return 1 + fi + done + + return 0 +} + +for n in nsclient1 nsclient2 nsrouter1 nsrouter2; do + ip netns add $n + ip -net $n link set lo up +done + +DEV=veth0 +ip link add $DEV netns nsclient1 type veth peer name eth1 netns nsrouter1 +DEV=veth0 +ip link add $DEV netns nsclient2 type veth peer name eth1 netns nsrouter2 + +DEV=veth0 +ip link add $DEV netns nsrouter1 type veth peer name eth2 netns nsrouter2 + +DEV=veth0 +for i in 1 2; do + ip -net nsclient$i link set $DEV up + ip -net nsclient$i addr add $(ipv4 $i)/24 dev $DEV + ip -net nsclient$i addr add $(ipv6 $i)/64 dev $DEV +done + +ip -net nsrouter1 link set eth1 up +ip -net nsrouter1 link set veth0 up + +ip -net nsrouter2 link set eth1 up +ip -net nsrouter2 link set eth2 up + +ip -net nsclient1 route add default via 192.168.1.1 +ip -net nsclient1 -6 route add default via dead:1::1 + +ip -net nsclient2 route add default via 192.168.2.1 +ip -net nsclient2 route add default via dead:2::1 + +i=3 +ip -net nsrouter1 addr add 192.168.1.1/24 dev eth1 +ip -net nsrouter1 addr add 192.168.3.1/24 dev veth0 +ip -net nsrouter1 addr add dead:1::1/64 dev eth1 +ip -net nsrouter1 addr add dead:3::1/64 dev veth0 +ip -net nsrouter1 route add default via 192.168.3.10 +ip -net nsrouter1 -6 route add default via dead:3::10 + +ip -net nsrouter2 addr add 192.168.2.1/24 dev eth1 +ip -net nsrouter2 addr add 192.168.3.10/24 dev eth2 +ip -net nsrouter2 addr add dead:2::1/64 dev eth1 +ip -net nsrouter2 addr add dead:3::10/64 dev eth2 +ip -net nsrouter2 route add default via 192.168.3.1 +ip -net nsrouter2 route add default via dead:3::1 + +sleep 2 +for i in 4 6; do + ip netns exec nsrouter1 sysctl -q net.ipv$i.conf.all.forwarding=1 + ip netns exec nsrouter2 sysctl -q net.ipv$i.conf.all.forwarding=1 +done + +for netns in nsrouter1 nsrouter2; do +ip netns exec $netns nft -f - <<EOF +table inet filter { + counter unknown { } + counter related { } + chain forward { + type filter hook forward priority 0; policy accept; + meta l4proto icmpv6 icmpv6 type "packet-too-big" ct state "related" counter name "related" accept + meta l4proto icmp icmp type "destination-unreachable" ct state "related" counter name "related" accept + meta l4proto { icmp, icmpv6 } ct state new,established accept + counter name "unknown" drop + } +} +EOF +done + +ip netns exec nsclient1 nft -f - <<EOF +table inet filter { + counter unknown { } + counter related { } + chain input { + type filter hook input priority 0; policy accept; + meta l4proto { icmp, icmpv6 } ct state established,untracked accept + + meta l4proto { icmp, icmpv6 } ct state "related" counter name "related" accept + counter name "unknown" drop + } +} +EOF + +ip netns exec nsclient2 nft -f - <<EOF +table inet filter { + counter unknown { } + counter new { } + counter established { } + + chain input { + type filter hook input priority 0; policy accept; + meta l4proto { icmp, icmpv6 } ct state established,untracked accept + + meta l4proto { icmp, icmpv6 } ct state "new" counter name "new" accept + meta l4proto { icmp, icmpv6 } ct state "established" counter name "established" accept + counter name "unknown" drop + } + chain output { + type filter hook output priority 0; policy accept; + meta l4proto { icmp, icmpv6 } ct state established,untracked accept + + meta l4proto { icmp, icmpv6 } ct state "new" counter name "new" + meta l4proto { icmp, icmpv6 } ct state "established" counter name "established" + counter name "unknown" drop + } +} +EOF + + +# make sure NAT core rewrites adress of icmp error if nat is used according to +# conntrack nat information (icmp error will be directed at nsrouter1 address, +# but it needs to be routed to nsclient1 address). +ip netns exec nsrouter1 nft -f - <<EOF +table ip nat { + chain postrouting { + type nat hook postrouting priority 0; policy accept; + ip protocol icmp oifname "veth0" counter masquerade + } +} +table ip6 nat { + chain postrouting { + type nat hook postrouting priority 0; policy accept; + ip6 nexthdr icmpv6 oifname "veth0" counter masquerade + } +} +EOF + +ip netns exec nsrouter2 ip link set eth1 mtu 1280 +ip netns exec nsclient2 ip link set veth0 mtu 1280 +sleep 1 + +ip netns exec nsclient1 ping -c 1 -s 1000 -q -M do 192.168.2.2 >/dev/null +if [ $? -ne 0 ]; then + echo "ERROR: netns ip routing/connectivity broken" 1>&2 + cleanup + exit 1 +fi +ip netns exec nsclient1 ping6 -q -c 1 -s 1000 dead:2::2 >/dev/null +if [ $? -ne 0 ]; then + echo "ERROR: netns ipv6 routing/connectivity broken" 1>&2 + cleanup + exit 1 +fi + +check_unknown +if [ $? -ne 0 ]; then + ret=1 +fi + +expect="packets 0 bytes 0" +for netns in nsrouter1 nsrouter2 nsclient1;do + check_counter "$netns" "related" "$expect" + if [ $? -ne 0 ]; then + ret=1 + fi +done + +expect="packets 2 bytes 2076" +check_counter nsclient2 "new" "$expect" +if [ $? -ne 0 ]; then + ret=1 +fi + +ip netns exec nsclient1 ping -q -c 1 -s 1300 -M do 192.168.2.2 > /dev/null +if [ $? -eq 0 ]; then + echo "ERROR: ping should have failed with PMTU too big error" 1>&2 + ret=1 +fi + +# nsrouter2 should have generated the icmp error, so +# related counter should be 0 (its in forward). +expect="packets 0 bytes 0" +check_counter "nsrouter2" "related" "$expect" +if [ $? -ne 0 ]; then + ret=1 +fi + +# but nsrouter1 should have seen it, same for nsclient1. +expect="packets 1 bytes 576" +for netns in nsrouter1 nsclient1;do + check_counter "$netns" "related" "$expect" + if [ $? -ne 0 ]; then + ret=1 + fi +done + +ip netns exec nsclient1 ping6 -c 1 -s 1300 dead:2::2 > /dev/null +if [ $? -eq 0 ]; then + echo "ERROR: ping6 should have failed with PMTU too big error" 1>&2 + ret=1 +fi + +expect="packets 2 bytes 1856" +for netns in nsrouter1 nsclient1;do + check_counter "$netns" "related" "$expect" + if [ $? -ne 0 ]; then + ret=1 + fi +done + +if [ $ret -eq 0 ];then + echo "PASS: icmp mtu error had RELATED state" +else + echo "ERROR: icmp error RELATED state test has failed" +fi + +cleanup +exit $ret -- 2.20.1

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