[lttng-dev] [PATCH lttng-tools] Test for select, poll and epoll syscall overrides
Mathieu Desnoyers
mathieu.desnoyers at efficios.com
Thu May 12 15:51:49 UTC 2016
----- On May 12, 2016, at 12:17 AM, Julien Desfossez jdesfossez at efficios.com wrote:
> This test for root_regression checks if the syscall overrides for
> select, pselect6, poll, ppoll, epoll_ctl, epoll_wait and epoll_pwait
> work as expected on arm and x86 (32 and 64-bit).
>
> There are 11 test cases that check for normal and abnormal behaviour. If
> the test system has the Babeltrace python bindings, the test validates
> the content of the events, otherwise only the presence of the generated
> events is checked.
>
> We also check if kernel OOPS, WARNING or BUG were generated during the
> test.
>
> Signed-off-by: Julien Desfossez <jdesfossez at efficios.com>
> ---
> tests/regression/kernel/Makefile.am | 7 +-
> tests/regression/kernel/select_poll_epoll.c | 872 +++++++++++++++++++++
> tests/regression/kernel/test_select_poll_epoll | 420 ++++++++++
> .../kernel/validate_select_poll_epoll.py | 783 ++++++++++++++++++
> tests/root_regression | 1 +
> 5 files changed, 2082 insertions(+), 1 deletion(-)
> create mode 100644 tests/regression/kernel/select_poll_epoll.c
> create mode 100755 tests/regression/kernel/test_select_poll_epoll
> create mode 100755 tests/regression/kernel/validate_select_poll_epoll.py
>
> diff --git a/tests/regression/kernel/Makefile.am
> b/tests/regression/kernel/Makefile.am
> index 36ff6ee..023c4c6 100644
> --- a/tests/regression/kernel/Makefile.am
> +++ b/tests/regression/kernel/Makefile.am
> @@ -1,4 +1,9 @@
> -EXTRA_DIST = test_event_basic test_all_events test_syscall
> +noinst_PROGRAMS = select_poll_epoll
> +select_poll_epoll_SOURCES = select_poll_epoll.c
> +select_poll_epoll_LDADD = -lpthread -lpopt
> +select_poll_epoll_CFLAGS = -fno-stack-protector -D_FORTIFY_SOURCE=0
> +
> +EXTRA_DIST = test_event_basic test_all_events test_syscall
> test_select_poll_epoll
>
> all-local:
> @if [ x"$(srcdir)" != x"$(builddir)" ]; then \
> diff --git a/tests/regression/kernel/select_poll_epoll.c
> b/tests/regression/kernel/select_poll_epoll.c
> new file mode 100644
> index 0000000..9a46191
> --- /dev/null
> +++ b/tests/regression/kernel/select_poll_epoll.c
> @@ -0,0 +1,872 @@
> +#include <stdio.h>
> +#include <poll.h>
> +#include <signal.h>
> +#include <unistd.h>
> +#include <sys/syscall.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <fcntl.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <stddef.h>
> +#include <sys/select.h>
> +#include <sys/epoll.h>
> +#include <popt.h>
> +#include <sys/time.h>
> +#include <sys/resource.h>
> +#include <limits.h>
> +#include <pthread.h>
> +#include <sys/mman.h>
> +#include <time.h>
> +
> +#define BUF_SIZE 256
> +#define NB_FD 1
> +#define MAX_FDS 2047
> +#define NR_ITER 1000 /* for stress-tests */
> +
> +static int timeout; /* seconds, -1 to disable */
> +static int stop_thread;
> +static int wait_fd;
> +
> +struct ppoll_thread_data {
> + struct pollfd *ufds;
> + int value;
> +};
> +
> +void test_select_big()
All functions that take no parameter should be (void)
> +{
> + fd_set rfds, wfds, exfds;
> + struct timeval tv;
> + int ret;
> + int fd2;
> + char buf[BUF_SIZE];
> +
> + FD_ZERO(&rfds);
> + FD_ZERO(&wfds);
> + FD_ZERO(&exfds);
> +
> + fd2 = dup2(wait_fd, 1022);
There are many hardcoded constants in the code. Please use a define,
or check if there is a standard define already.
> + FD_SET(fd2, &rfds);
> +
> + tv.tv_sec = 0;
> + tv.tv_usec = timeout * 1000;
1000 -> MSEC_PER_USEC ...
> +
> + if (timeout > 0)
missing brackets. Needed for tools coding style even for one-liners.
> + ret = select(fd2 + 1, &rfds, &wfds, &exfds, &tv);
> + else
> + ret = select(fd2 + 1, &rfds, &wfds, &exfds, NULL);
> +
> + if (ret == -1) {
> + perror("select()");
> + } else if (ret) {
> + printf("# [select] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[select] read");
> + }
> + } else {
> + printf("# [select] timeout\n");
> + }
> +}
> +
> +void test_pselect()
> +{
> + fd_set rfds;
> + struct timespec tv;
> + int ret;
> + char buf[BUF_SIZE];
> +
> + FD_ZERO(&rfds);
> + FD_SET(wait_fd, &rfds);
> +
> + tv.tv_sec = 0;
> + tv.tv_nsec = 1000 * 1000* timeout;
missing space, and hardcoded constants.
> +
> + if (timeout > 0)
> + ret = pselect(1, &rfds, NULL, NULL, &tv, NULL);
> + else
> + ret = pselect(1, &rfds, NULL, NULL, NULL, NULL);
> +
> + if (ret == -1) {
> + perror("pselect()");
> + } else if (ret) {
> + printf("# [pselect] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[pselect] read");
> + }
> + } else {
> + printf("# [pselect] timeout\n");
> + }
> +
> +}
> +
> +void test_select()
> +{
> + fd_set rfds;
> + struct timeval tv;
> + int ret;
> + char buf[BUF_SIZE];
> +
> + FD_ZERO(&rfds);
> + FD_SET(wait_fd, &rfds);
> +
> + tv.tv_sec = 0;
> + tv.tv_usec = timeout * 1000;
> +
> + if (timeout > 0)
> + ret = select(1, &rfds, NULL, NULL, &tv);
> + else
> + ret = select(1, &rfds, NULL, NULL, NULL);
> +
> + if (ret == -1) {
> + perror("select()");
> + } else if (ret) {
> + printf("# [select] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[select] read");
> + }
> + } else {
> + printf("# [select] timeout\n");
> + }
> +
> +}
> +
> +void test_poll()
> +{
> + struct pollfd ufds[NB_FD];
> + char buf[BUF_SIZE];
> + int ret;
> +
> + ufds[0].fd = wait_fd;
> + ufds[0].events = POLLIN|POLLPRI;
> +
> + ret = poll(ufds, 1, timeout);
> +
> + if (ret < 0) {
> + perror("poll");
> + } else if (ret > 0) {
> + printf("# [poll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[poll] read");
> + }
> + } else {
> + printf("# [poll] timeout\n");
> + }
> +
> + return;
> +}
> +
> +void test_ppoll()
> +{
> + struct pollfd ufds[NB_FD];
> + char buf[BUF_SIZE];
> + int ret;
> + struct timespec ts;
> +
> + ufds[0].fd = wait_fd;
> + ufds[0].events = POLLIN|POLLPRI;
> +
> + if (timeout > 0) {
> + ts.tv_sec = 0;
> + ts.tv_nsec = timeout * 1000 * 1000;
> + ret = ppoll(ufds, 1, &ts, NULL);
> + } else {
> + ret = ppoll(ufds, 1, NULL, NULL);
> + }
> +
> +
> + if (ret < 0) {
> + perror("ppoll");
> + } else if (ret > 0) {
> + printf("# [ppoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[ppoll] read");
> + }
> + } else {
> + printf("# [ppoll] timeout\n");
> + }
> +
> + return;
> +}
> +
> +void test_ppoll_big()
> +{
> + struct pollfd ufds[MAX_FDS];
> + char buf[BUF_SIZE];
> + int ret, i, fds[MAX_FDS];
> +
> + for (i = 0; i < MAX_FDS; i++) {
> + fds[i] = dup(wait_fd);
> + if (fds[i] < 0)
> + perror("dup");
> + ufds[i].fd = fds[i];
> + ufds[i].events = POLLIN|POLLPRI;
> + }
> +
> + ret = ppoll(ufds, MAX_FDS, NULL, NULL);
> +
> + if (ret < 0) {
> + perror("ppoll");
> + } else if (ret > 0) {
> + printf("# [ppoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[ppoll] read");
> + }
> + } else {
> + printf("# [ppoll] timeout\n");
> + }
> +
> + for (i = 0; i < MAX_FDS; i++) {
> + ret = close(fds[i]);
> + if (ret != 0)
> + perror("close");
> + }
> +
> + return;
> +}
> +
> +void test_epoll()
> +{
> + int ret, epollfd;
> + char buf[BUF_SIZE];
> + struct epoll_event epoll_event;
> +
> + epollfd = epoll_create(NB_FD);
> + if (epollfd < 0) {
> + perror("[epoll] create");
> + goto end;
> + }
> +
> + epoll_event.events = EPOLLIN | EPOLLPRI | EPOLLET;
> + epoll_event.data.fd = wait_fd;
> + ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
> + if (ret < 0) {
> + perror("[epoll] add");
> + goto end;
> + }
> +
> + if (timeout > 0)
> + ret = epoll_wait(epollfd, &epoll_event, 1, timeout);
> + else
> + ret = epoll_wait(epollfd, &epoll_event, 1, -1);
> +
> + if (ret == 1) {
> + printf("# [epoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[epoll] read");
> + }
> + } else if (ret == 0) {
> + printf("# [epoll] timeout\n");
> + } else {
> + perror("epoll_wait");
> + }
> +
> +end:
> + return;
> +}
> +
> +void test_pepoll()
> +{
> + int ret, epollfd;
> + char buf[BUF_SIZE];
> + struct epoll_event epoll_event;
> +
> + epollfd = epoll_create(NB_FD);
> + if (epollfd < 0) {
> + perror("[eppoll] create");
> + goto end;
> + }
> +
> + epoll_event.events = EPOLLIN | EPOLLPRI | EPOLLET;
> + epoll_event.data.fd = wait_fd;
> + ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
> + if (ret < 0) {
> + perror("[eppoll] add");
> + goto end;
> + }
> +
> + if (timeout > 0)
> + ret = epoll_pwait(epollfd, &epoll_event, 1, timeout, NULL);
> + else
> + ret = epoll_pwait(epollfd, &epoll_event, 1, -1, NULL);
> +
> + if (ret == 1) {
> + printf("# [eppoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[eppoll] read");
> + }
> + } else if (ret == 0) {
> + printf("# [eppoll] timeout\n");
> + } else {
> + perror("epoll_pwait");
> + }
> +
> +end:
> + return;
> +}
> +
> +void should_work()
> +{
> + test_select();
> + test_pselect();
> + test_select_big();
> + test_poll();
> + test_ppoll();
> + test_epoll();
> + test_pepoll();
> +}
> +
> +/*
> + * Ask for 100 FDs in a buffer for allocated for only 1 FD, should
> + * segfault (eventually with a "*** stack smashing detected ***" message).
> + * The event should contain an array of 100 FDs filled with garbage.
> + */
> +void ppoll_fds_buffer_overflow()
> +{
> + struct pollfd ufds[NB_FD];
> + char buf[BUF_SIZE];
> + int ret;
> +
> + ufds[0].fd = wait_fd;
> + ufds[0].events = POLLIN|POLLPRI;
> +
> + ret = syscall(SYS_ppoll, ufds, 100, NULL, NULL);
> +
> + if (ret < 0) {
> + perror("ppoll");
> + } else if (ret > 0) {
> + printf("# [ppoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[ppoll] read");
> + }
> + } else {
> + printf("# [ppoll] timeout\n");
> + }
> +
> + return;
> +}
> +
> +/*
> + * Ask for ULONG_MAX FDs in a buffer for allocated for only 1 FD, should
> + * cleanly fail with a "Invalid argument".
> + * The event should contain an empty array of FDs and overflow = 1.
> + */
> +void ppoll_fds_ulong_max()
> +{
> + struct pollfd ufds[NB_FD];
> + char buf[BUF_SIZE];
> + int ret;
> +
> + ufds[0].fd = wait_fd;
> + ufds[0].events = POLLIN|POLLPRI;
> +
> + ret = syscall(SYS_ppoll, ufds, ULONG_MAX, NULL, NULL);
> +
> + if (ret < 0) {
> + perror("# ppoll");
> + } else if (ret > 0) {
> + printf("# [ppoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[ppoll] read");
> + }
> + } else {
> + printf("# [ppoll] timeout\n");
> + }
> +
> + return;
> +}
> +
> +/*
> + * Select is limited to 1024 FDs, should output a pselect event
> + * with 0 FDs.
> + */
> +void pselect_fd_too_big()
> +{
> + fd_set rfds;
> + int ret;
> + int fd2;
> + char buf[BUF_SIZE];
> +
> + /*
> + * Test if nfds > 1024.
> + * Make sure ulimit is set correctly (ulimit -n 2048).
> + */
> + fd2 = dup2(wait_fd, 2047);
> + if (fd2 != 2047) {
> + perror("dup2");
> + return;
> + }
> + FD_ZERO(&rfds);
> + FD_SET(fd2, &rfds);
> +
> + ret = syscall(SYS_pselect6, fd2 + 1, &rfds, NULL, NULL, NULL, NULL);
> +
> + if (ret == -1) {
> + perror("# pselect()");
> + } else if (ret) {
> + printf("# [pselect] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[pselect] read");
> + }
> + } else {
> + printf("# [pselect] timeout\n");
> + }
> +
> +}
> +
> +/*
> + * Invalid pointer as writefds, should output a ppoll event
> + * with 0 FDs.
> + */
> +void pselect_invalid_pointer()
> +{
> + fd_set rfds;
> + int ret;
> + char buf[BUF_SIZE];
> + void *invalid = (void *) 0x42;
> +
> + FD_ZERO(&rfds);
> + FD_SET(wait_fd, &rfds);
> +
> + ret = syscall(SYS_pselect6, 1, &rfds, (fd_set *) invalid, NULL, NULL,
> + NULL);
> +
> + if (ret == -1) {
> + perror("# pselect()");
> + } else if (ret) {
> + printf("# [pselect] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[pselect] read");
> + }
> + } else {
> + printf("# [pselect] timeout\n");
> + }
> +
> +}
> +
> +/*
> + * Pass an invalid pointer to epoll_pwait, should fail with
> + * "Bad address", the event returns 0 FDs.
> + */
> +void epoll_pwait_invalid_pointer()
> +{
> + int ret, epollfd;
> + char buf[BUF_SIZE];
> + struct epoll_event epoll_event;
> + void *invalid = (void *) 0x42;
> +
> + epollfd = epoll_create(NB_FD);
> + if (epollfd < 0) {
> + perror("[eppoll] create");
> + goto end;
> + }
> +
> + epoll_event.events = EPOLLIN | EPOLLPRI | EPOLLET;
> + epoll_event.data.fd = wait_fd;
> + ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
> + if (ret < 0) {
> + perror("[eppoll] add");
> + goto end;
> + }
> +
> + ret = syscall(SYS_epoll_pwait, epollfd, (struct epoll_event *) invalid, 1, -1,
> NULL);
> +
> + if (ret == 1) {
> + printf("# [eppoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[eppoll] read");
> + }
> + } else if (ret == 0) {
> + printf("# [eppoll] timeout\n");
> + } else {
> + perror("# epoll_pwait");
> + }
> +
> +end:
> + return;
> +}
> +
> +/*
> + * Set maxevents to INT_MAX, should output "Invalid argument"
> + * The event should return an empty array.
> + */
> +void epoll_pwait_int_max()
> +{
> + int ret, epollfd;
> + char buf[BUF_SIZE];
> + struct epoll_event epoll_event;
> +
> + epollfd = epoll_create(NB_FD);
> + if (epollfd < 0) {
> + perror("[eppoll] create");
> + goto end;
> + }
> +
> + epoll_event.events = EPOLLIN | EPOLLPRI | EPOLLET;
> + epoll_event.data.fd = wait_fd;
> + ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
> + if (ret < 0) {
> + perror("[eppoll] add");
> + goto end;
> + }
> +
> + ret = syscall(SYS_epoll_pwait, epollfd, &epoll_event, INT_MAX, -1,
> + NULL);
> +
> + if (ret == 1) {
> + printf("# [eppoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[eppoll] read");
> + }
> + } else if (ret == 0) {
> + printf("# [eppoll] timeout\n");
> + } else {
> + perror("# epoll_pwait");
> + }
> +
> +end:
> + return;
> +}
> +
> +void *ppoll_writer(void *arg)
> +{
> + struct ppoll_thread_data *data = (struct ppoll_thread_data *) arg;
> +
> + while (!stop_thread) {
> + memset(data->ufds, data->value,
> + MAX_FDS * sizeof(struct pollfd));
> + usleep(100);
> + }
> +
> + return NULL;
> +}
> +
> +void do_ppoll(int *fds, struct pollfd *ufds)
> +{
> + int i, ret;
> + struct timespec ts;
> + char buf[BUF_SIZE];
> +
> + ts.tv_sec = 0;
> + ts.tv_nsec = 1 * 1000 * 1000;
> +
> + for (i = 0; i < MAX_FDS; i++) {
> + ufds[i].fd = fds[i];
> + ufds[i].events = POLLIN|POLLPRI;
> + }
> +
> + ret = ppoll(ufds, MAX_FDS, &ts, NULL);
> +
> + if (ret < 0) {
> + perror("ppoll");
> + } else if (ret > 0) {
> + printf("# [ppoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[ppoll] read");
> + }
> + } else {
> + printf("# [ppoll] timeout\n");
> + }
> +}
> +
> +void stress_ppoll(int *fds, int value)
> +{
> + pthread_t writer;
> + int iter;
> + struct ppoll_thread_data thread_data;
> + struct pollfd ufds[MAX_FDS];
> +
> + thread_data.ufds = ufds;
> + thread_data.value = value;
> +
> + stop_thread = 0;
> + pthread_create(&writer, NULL, &ppoll_writer, (void *) &thread_data);
> + for (iter = 0; iter < NR_ITER; iter++) {
> + do_ppoll(fds, ufds);
> + }
> + stop_thread = 1;
> + pthread_join(writer, NULL);
> +}
> +
> +/*
> + * 3 rounds of NR_ITER iterations with concurrent updates of the pollfd
> + * structure:
> + * - memset to 0
> + * - memset to 1
> + * - memset to INT_MAX
> + * Waits for input, but also set a timeout in case the input FD is overwritten
> + * before entering in the syscall. We use MAX_FDS FDs (dup of stdin), so the
> + * resulting trace is big (20MB).
> + *
> + * ppoll should work as expected and the trace should be readable at the end.
> + */
> +void ppoll_concurrent_write()
> +{
> + int i, ret, fds[MAX_FDS];
> +
> + for (i = 0; i < MAX_FDS; i++) {
> + fds[i] = dup(wait_fd);
> + if (fds[i] < 0)
> + perror("dup");
> + }
> +
> + stress_ppoll(fds, 0);
> + stress_ppoll(fds, 1);
> + stress_ppoll(fds, INT_MAX);
> +
> + for (i = 0; i < MAX_FDS; i++) {
> + ret = close(fds[i]);
> + if (ret != 0)
> + perror("close");
> + }
> +
> + return;
> +}
> +
> +void *epoll_pwait_writer(void *addr)
> +{
> + srand(time(NULL));
> +
> + while (!stop_thread) {
> + usleep(rand() % 30);
> + munmap(addr, MAX_FDS * sizeof(struct epoll_event));
> + }
> +
> + return NULL;
> +}
> +
> +/*
> + * epoll_pwait on MAX_FDS fds while a concurrent thread munmaps the
> + * buffer allocated for the returned data. This should randomly segfault.
> + * The trace should be readable and no kernel OOPS should occur.
> + */
> +void epoll_pwait_concurrent_munmap()
> +{
> + int ret, epollfd, i, fds[MAX_FDS];
> + char buf[BUF_SIZE];
> + struct epoll_event *epoll_event;
> + void *addr = NULL;
> + pthread_t writer;
> +
> +
> + epollfd = epoll_create(MAX_FDS);
> + if (epollfd < 0) {
> + perror("[eppoll] create");
> + goto end;
> + }
> +
> + epoll_event = mmap(addr, MAX_FDS * sizeof(struct epoll_event),
> + PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
> + -1, 0);
> + if (epoll_event == MAP_FAILED) {
> + perror("mmap");
> + goto end;
> + }
> +
> + for (i = 0; i < MAX_FDS; i++) {
> + fds[i] = dup(wait_fd);
> + if (fds[i] < 0)
> + perror("dup");
> + epoll_event[i].events = EPOLLIN | EPOLLPRI | EPOLLET;
> + epoll_event[i].data.fd = fds[i];
> + ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, fds[i], epoll_event);
> + if (ret < 0) {
> + perror("[eppoll] add");
> + goto end_unmap;
> + }
> + }
> + stop_thread = 0;
> + pthread_create(&writer, NULL, &epoll_pwait_writer, (void *) epoll_event);
> +
> + ret = epoll_pwait(epollfd, epoll_event, 1, 1, NULL);
> +
> + if (ret == 1) {
> + printf("# [eppoll] data available\n");
> + ret = read(wait_fd, buf, BUF_SIZE);
> + if (ret < 0) {
> + perror("[eppoll] read");
> + }
> + } else if (ret == 0) {
> + printf("# [eppoll] timeout\n");
> + } else {
> + perror("# epoll_pwait");
> + }
> +
> + stop_thread = 1;
> + pthread_join(writer, NULL);
> +
> +end_unmap:
> + for (i = 0; i < MAX_FDS; i++) {
> + ret = close(fds[i]);
> + if (ret != 0)
> + perror("close");
> + }
> +
> + ret = munmap(addr, MAX_FDS * sizeof(struct epoll_event));
> + if (ret != 0)
> + perror("munmap");
> +
> +end:
> + return;
> +}
> +
> +void usage(poptContext optCon, int exitcode, char *error, char *addl)
> +{
> + poptPrintUsage(optCon, stderr, 0);
> + if (error)
> + fprintf(stderr, "%s: %s\n", error, addl);
> + exit(exitcode);
> +}
> +
> +void print_list()
> +{
> + fprintf(stderr, "Test list (-t X):\n");
> + fprintf(stderr, "\t1: Working cases for select, pselect6, poll, ppoll "
> + "and epoll, waiting for input\n");
> + fprintf(stderr, "\t2: Timeout cases (1ms) for select, pselect6, poll, "
> + "ppoll and epoll\n");
> + fprintf(stderr, "\t3: pselect with a FD > 1023\n");
> + fprintf(stderr, "\t4: ppoll with %d FDs\n", MAX_FDS);
> + fprintf(stderr, "\t5: ppoll buffer overflow, should segfault, waits "
> + "for input\n");
> + fprintf(stderr, "\t6: pselect with invalid pointer, waits for "
> + "input\n");
> + fprintf(stderr, "\t7: ppoll with ulong_max fds, waits for input\n");
> + fprintf(stderr, "\t8: epoll_pwait with invalid pointer, waits for "
> + "input\n");
> + fprintf(stderr, "\t9: epoll_pwait with maxevents set to INT_MAX, "
> + "waits for input\n");
> + fprintf(stderr, "\t10: ppoll with concurrent updates of the structure "
> + "from user-space, stress test (3000 iterations), "
> + "waits for input + timeout 1ms\n");
> + fprintf(stderr, "\t11: epoll_pwait with concurrent munmap of the buffer "
> + "from user-space, should randomly segfault, run "
> + "multiple times, waits for input + timeout 1ms\n");
> +}
> +
> +int main(int argc, const char **argv)
> +{
> + int c, ret, test = -1;
> + poptContext optCon;
> + struct rlimit open_lim;
> +
> + struct poptOption optionsTable[] = {
> + { "test", 't', POPT_ARG_INT, &test, 0,
> + "Test to run", NULL },
> + { "list", 'l', 0, 0, 'l',
> + "List of tests (-t X)", NULL },
> + POPT_AUTOHELP
> + { NULL, 0, 0, NULL, 0 }
> + };
> +
> + optCon = poptGetContext(NULL, argc, argv, optionsTable, 0);
> +
> + if (argc < 2) {
> + poptPrintUsage(optCon, stderr, 0);
> + ret = -1;
> + goto end;
> + }
> +
> + ret = 0;
> +
> + while ((c = poptGetNextOpt(optCon)) >= 0) {
> + switch(c) {
> + case 'l':
> + print_list();
> + goto end;
> + }
> + }
> +
> + open_lim.rlim_cur = MAX_FDS + 5;
> + open_lim.rlim_max = MAX_FDS + 5;
Why the constants "5" in the code ? Should be a define ?
> +
> + ret = setrlimit(RLIMIT_NOFILE, &open_lim);
> + if (ret < 0) {
> + perror("setrlimit");
> + goto end;
> + }
> +
> + /*
> + * Some tests might segfault, but we need the getpid() to be output
> + * for the validation, disabling the buffering on stdout works.
> + */
> + setbuf(stdout, NULL);
> + printf("%d\n", getpid());
> +
> + wait_fd = STDIN_FILENO;
> +
> + switch(test) {
> + case 1:
> + timeout = -1;
> + should_work();
> + break;
> + case 2:
> + {
> + int pipe_fds[2];
> +
> + /*
> + * When launched with the run.sh script, stdin randomly
> + * receives some garbage that make the timeout cases
> + * fail, use a dummy pipe for this test.
> + */
> + ret = pipe(pipe_fds);
> + if (ret != 0) {
> + perror("pipe");
> + goto end;
> + }
> + wait_fd = pipe_fds[0];
> + timeout = 1;
> + should_work();
> + break;
Why is this case inline-coded rather than within a function call ?
Thanks,
Mathieu
> + }
> + case 3:
> + pselect_fd_too_big();
> + break;
> + case 4:
> + test_ppoll_big();
> + break;
> + case 5:
> + ppoll_fds_buffer_overflow();
> + break;
> + case 6:
> + pselect_invalid_pointer();
> + break;
> + case 7:
> + ppoll_fds_ulong_max();
> + break;
> + case 8:
> + epoll_pwait_invalid_pointer();
> + break;
> + case 9:
> + epoll_pwait_int_max();
> + break;
> + case 10:
> + ppoll_concurrent_write();
> + break;
> + case 11:
> + epoll_pwait_concurrent_munmap();
> + break;
> + default:
> + poptPrintUsage(optCon, stderr, 0);
> + ret = -1;
> + break;
> + }
> +
> +end:
> + poptFreeContext(optCon);
> + return ret;
> +}
> diff --git a/tests/regression/kernel/test_select_poll_epoll
> b/tests/regression/kernel/test_select_poll_epoll
> new file mode 100755
> index 0000000..b361f19
> --- /dev/null
> +++ b/tests/regression/kernel/test_select_poll_epoll
> @@ -0,0 +1,420 @@
> +#!/bin/bash
> +#
> +# Copyright (C) - 2016 Julien Desfossez <jdesfossez at efficios.com>
> +#
> +# This program is free software; you can redistribute it and/or modify it
> +# under the terms of the GNU General Public License, version 2 only, as
> +# published by the Free Software Foundation.
> +#
> +# This program is distributed in the hope that it will be useful, but WITHOUT
> +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> +# more details.
> +#
> +# You should have received a copy of the GNU General Public License along with
> +# this program; if not, write to the Free Software Foundation, Inc., 51
> +# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> +
> +TEST_DESC="Kernel tracer - select, poll and epoll payload extraction"
> +
> +CURDIR=$(dirname $0)/
> +TESTDIR=$CURDIR/../..
> +VALIDATE_SCRIPT="$CURDIR/validate_select_poll_epoll.py"
> +NUM_TESTS=102
> +
> +# Only run this test on x86 and arm
> +uname -m | grep -E "x86|arm" >/dev/null 2>&1
> +if test $? != 0; then
> + exit 0
> +fi
> +
> +DISABLE_VALIDATE=0
> +# Babeltrace python bindings are required for the validation, but
> +# it is not a mandatory dependancy of the project, so fail run the
> +# without the content validation, at least we test that we are not
> +# crashing the kernel.
> +$VALIDATE_SCRIPT --help >/dev/null
> +if test $? != 0; then
> + echo "# Failed to run the validation script, Babeltrace Python bindings might
> be missing"
> + DISABLE_VALIDATE=1
> +fi
> +
> +LAST_WARNING=$(dmesg | grep " WARNING:" | cut -d' ' -f1 | tail -1)
> +LAST_OOPS=$(dmesg | grep " OOPS:" | cut -d' ' -f1 | tail -1)
> +LAST_BUG=$(dmesg | grep " BUG:" | cut -d' ' -f1 | tail -1)
> +
> +source $TESTDIR/utils/utils.sh
> +
> +function check_trace_content()
> +{
> + if test $DISABLE_VALIDATE == 1; then
> + ok 0 "Validation skipped"
> + return
> + fi
> +
> + $VALIDATE_SCRIPT $@
> + if test $? = 0; then
> + ok 0 "Validation success"
> + else
> + fail "Validation"
> + fi
> +}
> +
> +function test_working_cases()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_wait,epoll_pwait"
> +
> + diag "Working cases for select, pselect6, poll, ppoll and epoll, waiting for
> input"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + { out=$(yes | $CURDIR/select_poll_epoll -t 1); } 2>/dev/null
> + stop_lttng_tracing_ok
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> + check_trace_content -t 1 -p $pid $TRACE_PATH
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test1
> + chown -R julien:julien test1
> +# #rm -rf $TRACE_PATH
> +}
> +
> +function test_timeout_cases()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_wait,epoll_pwait"
> +
> + diag "Timeout cases (1ms) for select, pselect6, poll, ppoll and epoll"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME "$SYSCALL_LIST"
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + { out=$($CURDIR/select_poll_epoll -t 2); } 2>/dev/null
> + stop_lttng_tracing_ok
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> + check_trace_content -t 2 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test2
> + chown -R julien:julien test2
> + #rm -rf $TRACE_PATH
> +}
> +
> +function test_big_pselect()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="pselect6"
> +
> + diag "pselect with a FD > 1023"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + { out=$($CURDIR/select_poll_epoll -t 3); } 2>/dev/null
> + stop_lttng_tracing_ok
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> + check_trace_content -t 3 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test3
> + chown -R julien:julien test3
> + #rm -rf $TRACE_PATH
> +}
> +
> +function test_big_ppoll()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="ppoll"
> +
> + diag "ppoll with 2047 FDs"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + { out=$(yes | $CURDIR/select_poll_epoll -t 4); } 2>/dev/null
> + stop_lttng_tracing_ok
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> + check_trace_content -t 4 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test4
> + chown -R julien:julien test4
> + #rm -rf $TRACE_PATH
> +}
> +
> +function test_ppoll_overflow()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="ppoll"
> +
> + diag "ppoll buffer overflow, should segfault, waits for input"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + diag "Expect segfaults"
> + { out=$(yes | $CURDIR/select_poll_epoll -t 5); } 2>/dev/null
> + stop_lttng_tracing_ok
> + echo $out
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> +
> + check_trace_content -t 5 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test5
> + chown -R julien:julien test5
> + #rm -rf $TRACE_PATH
> +}
> +
> +function test_pselect_invalid_ptr()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="pselect6"
> +
> + diag "pselect with invalid pointer, waits for input"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + { out=$(yes | $CURDIR/select_poll_epoll -t 6); } 2>/dev/null
> + stop_lttng_tracing_ok
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> + check_trace_content -t 6 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test6
> + chown -R julien:julien test6
> + #rm -rf $TRACE_PATH
> +}
> +
> +function test_ppoll_ulong_max()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="ppoll"
> +
> + diag "ppoll with ulong_max fds, waits for input"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + { out=$(yes | $CURDIR/select_poll_epoll -t 7); } 2>/dev/null
> + stop_lttng_tracing_ok
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> + check_trace_content -t 7 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test7
> + chown -R julien:julien test7
> + #rm -rf $TRACE_PATH
> +}
> +
> +function test_epoll_pwait_invalid_ptr()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="epoll_pwait"
> +
> + diag "epoll_pwait with invalid pointer, waits for input"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + { out=$(yes | $CURDIR/select_poll_epoll -t 8); } 2>/dev/null
> + stop_lttng_tracing_ok
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> + check_trace_content -t 8 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test8
> + chown -R julien:julien test8
> + #rm -rf $TRACE_PATH
> +}
> +
> +function test_epoll_pwait_int_max()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="epoll_pwait"
> +
> + diag "epoll_pwait with maxevents set to INT_MAX, waits for input"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + { out=$(yes | $CURDIR/select_poll_epoll -t 9); } 2>/dev/null
> + stop_lttng_tracing_ok
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> + check_trace_content -t 9 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test9
> + chown -R julien:julien test9
> + #rm -rf $TRACE_PATH
> +}
> +
> +function test_ppoll_concurrent()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="ppoll"
> +
> + diag "ppoll with concurrent updates of the structure from user-space, stress
> test (3000 iterations), waits for input + timeout 1ms"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + { out=$(yes | $CURDIR/select_poll_epoll -t 10); } 2>/dev/null
> + stop_lttng_tracing_ok
> + pid=$(echo $out | cut -d' ' -f1)
> +
> + validate_trace "$SYSCALL_LIST" $TRACE_PATH
> + check_trace_content -t 10 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test10
> + chown -R julien:julien test10
> + #rm -rf $TRACE_PATH
> +}
> +
> +function test_epoll_pwait_concurrent()
> +{
> + TRACE_PATH=$(mktemp -d)
> + SESSION_NAME="syscall_payload"
> + SYSCALL_LIST="epoll_ctl,epoll_pwait"
> +
> + diag "epoll_pwait with concurrent munmap of the buffer from user-space, should
> randomly segfault, run multiple times, waits for input + timeout 1ms"
> +
> + create_lttng_session_ok $SESSION_NAME $TRACE_PATH
> +
> + lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
> + add_context_kernel_ok $SESSION_NAME channel0 pid
> +
> + start_lttng_tracing_ok
> + diag "Expect segfaults"
> + for i in $(seq 1 100); do
> + { out=$($CURDIR/select_poll_epoll -t 11); } 2>/dev/null
> + done
> + pid=$(echo $out | cut -d' ' -f1)
> + stop_lttng_tracing_ok
> +
> + # epoll_wait is not always generated in the trace (stress test)
> + validate_trace "epoll_ctl" $TRACE_PATH
> + check_trace_content -t 11 -p $pid $TRACE_PATH 2>/dev/null
> +
> + destroy_lttng_session_ok $SESSION_NAME
> +
> + cp -r $TRACE_PATH test11
> + chown -R julien:julien test11
> + #rm -rf $TRACE_PATH
> +}
> +
> +# MUST set TESTDIR before calling those functions
> +plan_tests $NUM_TESTS
> +
> +print_test_banner "$TEST_DESC"
> +
> +if [ "$(id -u)" == "0" ]; then
> + isroot=1
> +else
> + isroot=0
> +fi
> +
> +skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
> +{
> + start_lttng_sessiond
> +
> + test_working_cases
> + test_timeout_cases
> + test_big_pselect
> + test_big_ppoll
> + test_ppoll_overflow
> + test_pselect_invalid_ptr
> + test_ppoll_ulong_max
> + test_epoll_pwait_invalid_ptr
> + test_epoll_pwait_int_max
> + test_ppoll_concurrent
> + test_epoll_pwait_concurrent
> +
> + stop_lttng_sessiond
> +
> + NEW_WARNING=$(dmesg | grep " WARNING:" | cut -d' ' -f1 | tail -1)
> + NEW_OOPS=$(dmesg | grep " OOPS:" | cut -d' ' -f1 | tail -1)
> + NEW_BUG=$(dmesg | grep " BUG:" | cut -d' ' -f1 | tail -1)
> +
> + if test "$LAST_WARNING" != "$NEW_WARNING"; then
> + fail "New WARNING generated"
> + fi
> + if test "$LAST_OOPS" != "$NEW_OOPS"; then
> + fail "New OOPS generated"
> + fi
> + if test "$LAST_BUG" != "$NEW_BUG"; then
> + fail "New BUG generated"
> + fi
> +}
> diff --git a/tests/regression/kernel/validate_select_poll_epoll.py
> b/tests/regression/kernel/validate_select_poll_epoll.py
> new file mode 100755
> index 0000000..37d4042
> --- /dev/null
> +++ b/tests/regression/kernel/validate_select_poll_epoll.py
> @@ -0,0 +1,783 @@
> +#!/usr/bin/env python3
> +
> +import sys
> +import time
> +import argparse
> +
> +NSEC_PER_SEC = 1000000000
> +
> +try:
> + from babeltrace import TraceCollection
> +except ImportError:
> + # quick fix for debian-based distros
> + sys.path.append("/usr/local/lib/python%d.%d/site-packages" %
> + (sys.version_info.major, sys.version_info.minor))
> + from babeltrace import TraceCollection
> +
> +
> +class TraceParser:
> + def __init__(self, trace, pid):
> + self.trace = trace
> + self.pid = pid
> + self.expect = {}
> +
> + def ns_to_hour_nsec(self, ns):
> + d = time.localtime(ns/NSEC_PER_SEC)
> + return "%02d:%02d:%02d.%09d" % (d.tm_hour, d.tm_min, d.tm_sec,
> + ns % NSEC_PER_SEC)
> +
> + def parse(self):
> + # iterate over all the events
> + for event in self.trace.events:
> + if self.pid is not None and event["pid"] != self.pid:
> + continue
> +
> + method_name = "handle_%s" % event.name.replace(":",
> "_").replace("+", "_")
> + # call the function to handle each event individually
> + if hasattr(TraceParser, method_name):
> + func = getattr(TraceParser, method_name)
> + func(self, event)
> +
> + ret = 0
> + for i in self.expect.keys():
> + if self.expect[i] == 0:
> + print("%s not validated" % i)
> + ret = 1
> +
> + return ret
> +
> + ### epoll_ctl
> + def handle_compat_syscall_entry_epoll_ctl(self, event):
> + self.epoll_ctl_entry(event)
> +
> + def handle_compat_syscall_exit_epoll_ctl(self, event):
> + self.epoll_ctl_exit(event)
> +
> + def handle_syscall_entry_epoll_ctl(self, event):
> + self.epoll_ctl_entry(event)
> +
> + def handle_syscall_exit_epoll_ctl(self, event):
> + self.epoll_ctl_exit(event)
> +
> + def epoll_ctl_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + epfd = event["epfd"]
> + op_enum = event["op_enum"]
> + fd = event["fd"]
> + _event = event["event"]
> +
> + def epoll_ctl_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> +
> + ### epoll_wait + epoll_pwait
> + def handle_compat_syscall_entry_epoll_wait(self, event):
> + self.epoll_wait_entry(event)
> +
> + def handle_compat_syscall_exit_epoll_wait(self, event):
> + self.epoll_wait_exit(event)
> +
> + def handle_syscall_entry_epoll_wait(self, event):
> + self.epoll_wait_entry(event)
> +
> + def handle_syscall_exit_epoll_wait(self, event):
> + self.epoll_wait_exit(event)
> +
> + def handle_compat_syscall_entry_epoll_pwait(self, event):
> + self.epoll_wait_entry(event)
> +
> + def handle_compat_syscall_exit_epoll_pwait(self, event):
> + self.epoll_wait_exit(event)
> +
> + def handle_syscall_entry_epoll_pwait(self, event):
> + self.epoll_wait_entry(event)
> +
> + def handle_syscall_exit_epoll_pwait(self, event):
> + self.epoll_wait_exit(event)
> +
> + def epoll_wait_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + epfd = event["epfd"]
> + maxevents = event["maxevents"]
> + timeout = event["timeout"]
> +
> + def epoll_wait_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + #### poll + ppoll
> + def handle_compat_syscall_entry_poll(self, event):
> + self.poll_entry(event)
> +
> + def handle_compat_syscall_exit_poll(self, event):
> + self.poll_exit(event)
> +
> + def handle_syscall_entry_poll(self, event):
> + self.poll_entry(event)
> +
> + def handle_syscall_exit_poll(self, event):
> + self.poll_exit(event)
> +
> + def handle_compat_syscall_entry_ppoll(self, event):
> + self.poll_entry(event)
> +
> + def handle_compat_syscall_exit_ppoll(self, event):
> + self.poll_exit(event)
> +
> + def handle_syscall_entry_ppoll(self, event):
> + self.poll_entry(event)
> +
> + def handle_syscall_exit_ppoll(self, event):
> + self.poll_exit(event)
> +
> + def poll_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + def poll_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + fds = event["fds"]
> +
> + ### epoll_create
> + def handle_compat_syscall_entry_epoll_create1(self, event):
> + self.epoll_create_entry(event)
> +
> + def handle_compat_syscall_exit_epoll_create1(self, event):
> + self.epoll_create_exit(event)
> +
> + def handle_compat_syscall_entry_epoll_create(self, event):
> + self.epoll_create_entry(event)
> +
> + def handle_compat_syscall_exit_epoll_create(self, event):
> + self.epoll_create_exit(event)
> +
> + def handle_syscall_entry_epoll_create1(self, event):
> + self.epoll_create_entry(event)
> +
> + def handle_syscall_exit_epoll_create1(self, event):
> + self.epoll_create_exit(event)
> +
> + def handle_syscall_entry_epoll_create(self, event):
> + self.epoll_create_entry(event)
> +
> + def handle_syscall_exit_epoll_create(self, event):
> + self.epoll_create_exit(event)
> +
> + def handle_compat_syscall_entry_epoll_create1(self, event):
> + self.epoll_create_entry(event)
> +
> + def handle_compat_syscall_exit_epoll_create(self, event):
> + self.epoll_create_exit(event)
> +
> + def epoll_create_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + flags = event["flags"]
> +
> + def epoll_create_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> +
> + ### select + pselect6
> + def handle_syscall_entry_pselect6(self, event):
> + self.select_entry(event)
> +
> + def handle_syscall_exit_pselect6(self, event):
> + self.select_exit(event)
> +
> + def handle_compat_syscall_entry_pselect6(self, event):
> + self.select_entry(event)
> +
> + def handle_compat_syscall_exit_pselect6(self, event):
> + self.select_exit(event)
> +
> + def handle_syscall_entry_select(self, event):
> + self.select_entry(event)
> +
> + def handle_syscall_exit_select(self, event):
> + self.select_exit(event)
> +
> + def handle_compat_syscall_entry_select(self, event):
> + self.select_entry(event)
> +
> + def handle_compat_syscall_exit_select(self, event):
> + self.select_exit(event)
> +
> + def select_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + n = event["n"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> + def select_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> +
> +class Test1(TraceParser):
> + def __init__(self, trace, pid):
> + super().__init__(trace, pid)
> + self.expect["select_in_fd0"] = 0
> + self.expect["select_in_fd1023"] = 0
> + self.expect["select_out_fd0"] = 0
> + self.expect["select_out_fd1023"] = 0
> + self.expect["poll_in_nfds1"] = 0
> + self.expect["poll_out_nfds1"] = 0
> + self.expect["epoll_ctl_in_add"] = 0
> + self.expect["epoll_ctl_out_ok"] = 0
> + self.expect["epoll_wait_in_ok"] = 0
> + self.expect["epoll_wait_out_fd0"] = 0
> +
> + def select_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + n = event["n"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> + if n == 1 and readfds[0] == 1:
> + self.expect["select_in_fd0"] = 1
> + if n == 1023:
> + if readfds[127] == 0x40 and writefds[127] == 0 and \
> + exceptfds[127] == 0 and overflow == 0:
> + self.expect["select_in_fd1023"] = 1
> +
> + def select_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> + if ret == 1:
> + if readfds[0] == 1:
> + self.expect["select_out_fd0"] = 1
> + if _readfds_length == 128 and readfds[127] == 0x40 and \
> + writefds[127] == 0 and exceptfds[127] == 0 and tvp == 0:
> + self.expect["select_out_fd1023"] = 1
> +
> + def poll_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if nfds == 1 and fds_length == 1 and fds[0]["raw_events"] == 0x3 \
> + and fds[0]["events"]["POLLIN"] == 1 and \
> + fds[0]["events"]["padding"] == 0:
> + self.expect["poll_in_nfds1"] = 1
> +
> + def poll_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + fds = event["fds"]
> +
> + if ret == 1 and fds_length == 1 and fds[0]["raw_events"] == 0x1 \
> + and fds[0]["events"]["POLLIN"] == 1 and \
> + fds[0]["events"]["padding"] == 0:
> + self.expect["poll_out_nfds1"] = 1
> +
> + def epoll_ctl_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + epfd = event["epfd"]
> + op_enum = event["op_enum"]
> + fd = event["fd"]
> + _event = event["event"]
> +
> + if epfd == 3 and op_enum == "EPOLL_CTL_ADD" and fd == 0 and \
> + _event["data_union"]["fd"] == 0 and \
> + _event["events"]["EPOLLIN"] == 1 and \
> + _event["events"]["EPOLLPRI"] == 1:
> + self.expect["epoll_ctl_in_add"] = 1
> +
> + def epoll_ctl_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> +
> + if ret == 0:
> + self.expect["epoll_ctl_out_ok"] = 1
> +
> + def epoll_wait_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + epfd = event["epfd"]
> + maxevents = event["maxevents"]
> + timeout = event["timeout"]
> +
> + if epfd == 3 and maxevents == 1 and timeout == -1:
> + self.expect["epoll_wait_in_ok"] = 1
> +
> +
> + def epoll_wait_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if ret == 1 and fds_length == 1 and overflow == 0 and \
> + fds[0]["data_union"]["fd"] == 0 and \
> + fds[0]["events"]["EPOLLIN"] == 1:
> + self.expect["epoll_wait_out_fd0"] = 1
> +
> +
> +class Test2(TraceParser):
> + def __init__(self, trace, pid):
> + super().__init__(trace, pid)
> + self.expect["select_timeout_in_fd0"] = 0
> + self.expect["select_timeout_in_fd1023"] = 0
> + self.expect["select_timeout_out"] = 0
> + self.expect["poll_timeout_in"] = 0
> + self.expect["poll_timeout_out"] = 0
> + self.expect["epoll_ctl_timeout_in_add"] = 0
> + self.expect["epoll_ctl_timeout_out_ok"] = 0
> + self.expect["epoll_wait_timeout_in"] = 0
> + self.expect["epoll_wait_timeout_out"] = 0
> +
> + def select_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + n = event["n"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> + if n == 1 and tvp != 0:
> + self.expect["select_timeout_in_fd0"] = 1
> + if n == 1023:
> + if readfds[127] == 0x40 and writefds[127] == 0 and \
> + exceptfds[127] == 0 and tvp != 0:
> + self.expect["select_timeout_in_fd1023"] = 1
> +
> + def select_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> + if ret == 0 and tvp != 0:
> + self.expect["select_timeout_out"] = 1
> +
> + def poll_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if nfds == 1 and fds_length == 1 and fds[0]["raw_events"] == 0x3 \
> + and fds[0]["events"]["POLLIN"] == 1 and \
> + fds[0]["events"]["padding"] == 0:
> + self.expect["poll_timeout_in"] = 1
> +
> + def poll_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + fds = event["fds"]
> +
> + if ret == 0 and nfds == 1 and fds_length == 0:
> + self.expect["poll_timeout_out"] = 1
> +
> + def epoll_ctl_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + epfd = event["epfd"]
> + op_enum = event["op_enum"]
> + fd = event["fd"]
> + _event = event["event"]
> +
> + if op_enum == "EPOLL_CTL_ADD" and \
> + _event["events"]["EPOLLIN"] == 1 and \
> + _event["events"]["EPOLLPRI"] == 1:
> + self.expect["epoll_ctl_timeout_in_add"] = 1
> +
> + def epoll_ctl_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> +
> + if ret == 0:
> + self.expect["epoll_ctl_timeout_out_ok"] = 1
> +
> + def epoll_wait_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + epfd = event["epfd"]
> + maxevents = event["maxevents"]
> + timeout = event["timeout"]
> +
> + if maxevents == 1 and timeout == 1:
> + self.expect["epoll_wait_timeout_in"] = 1
> +
> +
> + def epoll_wait_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if ret == 0 and fds_length == 0 and overflow == 0:
> + self.expect["epoll_wait_timeout_out"] = 1
> +
> +
> +class Test3(TraceParser):
> + def __init__(self, trace, pid):
> + super().__init__(trace, pid)
> + self.expect["select_too_big_in"] = 0
> + self.expect["select_too_big_out"] = 0
> +
> + def select_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + n = event["n"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> + if n == 2048 and overflow == 0 and _readfds_length == 0:
> + self.expect["select_too_big_in"] = 1
> +
> + def select_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> + if ret == -9 and overflow == 0 and _readfds_length == 0:
> + self.expect["select_too_big_out"] = 1
> +
> +
> +class Test4(TraceParser):
> + def __init__(self, trace, pid):
> + super().__init__(trace, pid)
> + self.expect["big_poll_in"] = 0
> + self.expect["big_poll_out"] = 0
> +
> + def poll_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if nfds == 2047 and fds_length == 512 and overflow == 1 and \
> + fds[0]["raw_events"] == 0x3 \
> + and fds[0]["events"]["POLLIN"] == 1 and \
> + fds[0]["events"]["padding"] == 0 and \
> + fds[511]["events"]["POLLIN"] == 1 and \
> + fds[511]["events"]["POLLPRI"] == 1:
> + self.expect["big_poll_in"] = 1
> +
> + def poll_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if ret == 2047 and nfds == 2047 and fds_length == 512 and \
> + overflow == 1 and fds[0]["events"]["POLLIN"] == 1 and \
> + fds[511]["events"]["POLLIN"] == 1:
> + self.expect["big_poll_out"] = 1
> +
> +
> +class Test5(TraceParser):
> + def __init__(self, trace, pid):
> + super().__init__(trace, pid)
> + self.expect["poll_overflow_in"] = 0
> + self.expect["poll_overflow_out"] = 0
> +
> + def poll_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if nfds == 100 and fds_length == 100 and overflow == 0 and \
> + fds[0]["events"]["POLLIN"] == 1:
> + self.expect["poll_overflow_in"] = 1
> +
> + def poll_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if nfds == 100 and overflow == 0:
> + self.expect["poll_overflow_out"] = 1
> +
> +
> +class Test6(TraceParser):
> + def __init__(self, trace, pid):
> + super().__init__(trace, pid)
> + self.expect["pselect_invalid_in"] = 0
> + self.expect["pselect_invalid_out"] = 0
> +
> + def select_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + n = event["n"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> + if n == 1 and overflow == 0 and _readfds_length == 0:
> + self.expect["pselect_invalid_in"] = 1
> +
> + def select_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + overflow = event["overflow"]
> + tvp = event["tvp"]
> + _readfds_length = event["_readfds_length"]
> + readfds = event["readfds"]
> + _writefds_length = event["_writefds_length"]
> + writefds = event["writefds"]
> + _exceptfds_length = event["_exceptfds_length"]
> + exceptfds = event["exceptfds"]
> +
> + if ret == -14 and overflow == 0 and _readfds_length == 0:
> + self.expect["pselect_invalid_out"] = 1
> +
> +
> +class Test7(TraceParser):
> + def __init__(self, trace, pid):
> + super().__init__(trace, pid)
> + self.expect["poll_max_in"] = 0
> + self.expect["poll_max_out"] = 0
> +
> + def poll_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if nfds == 4294967295 and overflow == 1:
> + self.expect["poll_max_in"] = 1
> +
> + def poll_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + nfds = event["nfds"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if ret == -22 and nfds == 4294967295 and overflow == 0:
> + self.expect["poll_max_out"] = 1
> +
> +
> +class Test8(TraceParser):
> + def __init__(self, trace, pid):
> + super().__init__(trace, pid)
> + self.expect["epoll_wait_invalid_in"] = 0
> + self.expect["epoll_wait_invalid_out"] = 0
> +
> + def epoll_wait_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + epfd = event["epfd"]
> + maxevents = event["maxevents"]
> + timeout = event["timeout"]
> +
> + if epfd == 3 and maxevents == 1 and timeout == -1:
> + self.expect["epoll_wait_invalid_in"] = 1
> +
> +
> + def epoll_wait_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if ret == -14 and fds_length == 0 and overflow == 0:
> + self.expect["epoll_wait_invalid_out"] = 1
> +
> +
> +class Test9(TraceParser):
> + def __init__(self, trace, pid):
> + super().__init__(trace, pid)
> + self.expect["epoll_wait_max_in"] = 0
> + self.expect["epoll_wait_max_out"] = 0
> +
> + def epoll_wait_entry(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + epfd = event["epfd"]
> + maxevents = event["maxevents"]
> + timeout = event["timeout"]
> +
> + if epfd == 3 and maxevents == 2147483647 and timeout == -1:
> + self.expect["epoll_wait_max_in"] = 1
> +
> +
> + def epoll_wait_exit(self, event):
> + timestamp = event.timestamp
> + cpu_id = event["cpu_id"]
> + ret = event["ret"]
> + fds_length = event["fds_length"]
> + overflow = event["overflow"]
> + fds = event["fds"]
> +
> + if ret == -22 and fds_length == 0 and overflow == 0:
> + self.expect["epoll_wait_max_out"] = 1
> +
> +
> +if __name__ == "__main__":
> + parser = argparse.ArgumentParser(description='Trace parser')
> + parser.add_argument('path', metavar="<path/to/trace>", help='Trace path')
> + parser.add_argument('-t', '--test', type=int, help='Test to validate')
> + parser.add_argument('-p', '--pid', type=int, help='PID of the app')
> + args = parser.parse_args()
> +
> + if not args.test:
> + print("Need to pass a test to validate (-t)")
> + sys.exit(1)
> +
> + if not args.pid:
> + print("Need to pass the PID to check (-p)")
> + sys.exit(1)
> +
> + traces = TraceCollection()
> + handle = traces.add_traces_recursive(args.path, "ctf")
> + if handle is None:
> + sys.exit(1)
> +
> + t = None
> +
> + if args.test == 1:
> + t = Test1(traces, args.pid)
> + elif args.test == 2:
> + t = Test2(traces, args.pid)
> + elif args.test == 3:
> + t = Test3(traces, args.pid)
> + elif args.test == 4:
> + t = Test4(traces, args.pid)
> + elif args.test == 5:
> + t = Test5(traces, args.pid)
> + elif args.test == 6:
> + t = Test6(traces, args.pid)
> + elif args.test == 7:
> + t = Test7(traces, args.pid)
> + elif args.test == 8:
> + t = Test8(traces, args.pid)
> + elif args.test == 9:
> + t = Test9(traces, args.pid)
> + elif args.test == 10:
> + # stress test, nothing reliable to check
> + ret = 0
> + elif args.test == 11:
> + # stress test, nothing reliable to check
> + ret = 0
> + else:
> + print("Invalid test case")
> + sys.exit(1)
> +
> + if t is not None:
> + ret = t.parse()
> +
> + for h in handle.values():
> + traces.remove_trace(h)
> +
> + sys.exit(ret)
> diff --git a/tests/root_regression b/tests/root_regression
> index 869c560..93cad3e 100644
> --- a/tests/root_regression
> +++ b/tests/root_regression
> @@ -1,6 +1,7 @@
> regression/kernel/test_all_events
> regression/kernel/test_event_basic
> regression/kernel/test_syscall
> +regression/kernel/test_select_poll_epoll
> regression/tools/live/test_kernel
> regression/tools/live/test_lttng_kernel
> regression/tools/streaming/test_high_throughput_limits
> --
> 1.9.1
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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