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Fix: Tests: leaking epoll fd
[lttng-tools.git]
/
tests
/
regression
/
kernel
/
select_poll_epoll.c
diff --git
a/tests/regression/kernel/select_poll_epoll.c
b/tests/regression/kernel/select_poll_epoll.c
index 08e7fce0d898df547da42e371dc694f90bea4141..b1eaf6045f9b3b16dcffc9bee88f61b0d358197b 100644
(file)
--- a/
tests/regression/kernel/select_poll_epoll.c
+++ b/
tests/regression/kernel/select_poll_epoll.c
@@
-1,3
+1,10
@@
+/*
+ * Copyright (C) 2016 Julien Desfossez <jdesfossez@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
#include <stdio.h>
#include <poll.h>
#include <signal.h>
#include <stdio.h>
#include <poll.h>
#include <signal.h>
@@
-31,7
+38,7
@@
#define MSEC_PER_NSEC (MSEC_PER_USEC * 1000)
static int timeout; /* seconds, -1 to disable */
#define MSEC_PER_NSEC (MSEC_PER_USEC * 1000)
static int timeout; /* seconds, -1 to disable */
-
volatile static
int stop_thread;
+
static volatile
int stop_thread;
static int wait_fd;
struct ppoll_thread_data {
static int wait_fd;
struct ppoll_thread_data {
@@
-39,6
+46,7
@@
struct ppoll_thread_data {
int value;
};
int value;
};
+static
void test_select_big(void)
{
fd_set rfds, wfds, exfds;
void test_select_big(void)
{
fd_set rfds, wfds, exfds;
@@
-88,6
+96,7
@@
end:
return;
}
return;
}
+static
void test_pselect(void)
{
fd_set rfds;
void test_pselect(void)
{
fd_set rfds;
@@
-121,6
+130,7
@@
void test_pselect(void)
}
}
+static
void test_select(void)
{
fd_set rfds;
void test_select(void)
{
fd_set rfds;
@@
-154,6
+164,7
@@
void test_select(void)
}
}
+static
void test_poll(void)
{
struct pollfd ufds[NB_FD];
void test_poll(void)
{
struct pollfd ufds[NB_FD];
@@
-178,6
+189,7
@@
void test_poll(void)
}
}
}
}
+static
void test_ppoll(void)
{
struct pollfd ufds[NB_FD];
void test_ppoll(void)
{
struct pollfd ufds[NB_FD];
@@
-210,6
+222,7
@@
void test_ppoll(void)
}
}
}
}
+static
void test_ppoll_big(void)
{
struct pollfd ufds[MAX_FDS];
void test_ppoll_big(void)
{
struct pollfd ufds[MAX_FDS];
@@
-249,6
+262,7
@@
void test_ppoll_big(void)
return;
}
return;
}
+static
void test_epoll(void)
{
int ret, epollfd;
void test_epoll(void)
{
int ret, epollfd;
@@
-266,7
+280,7
@@
void test_epoll(void)
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
if (ret < 0) {
perror("[epoll] add");
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
if (ret < 0) {
perror("[epoll] add");
- goto e
nd
;
+ goto e
rror
;
}
if (timeout > 0) {
}
if (timeout > 0) {
@@
-287,10
+301,13
@@
void test_epoll(void)
perror("epoll_wait");
}
perror("epoll_wait");
}
+error:
+ close(epollfd);
end:
return;
}
end:
return;
}
+static
void test_pepoll(void)
{
int ret, epollfd;
void test_pepoll(void)
{
int ret, epollfd;
@@
-308,7
+325,7
@@
void test_pepoll(void)
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
if (ret < 0) {
perror("[eppoll] add");
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
if (ret < 0) {
perror("[eppoll] add");
- goto e
nd
;
+ goto e
rror
;
}
if (timeout > 0) {
}
if (timeout > 0) {
@@
-329,10
+346,13
@@
void test_pepoll(void)
perror("epoll_pwait");
}
perror("epoll_pwait");
}
+error:
+ close(epollfd);
end:
return;
}
end:
return;
}
+static
void run_working_cases(void)
{
int ret;
void run_working_cases(void)
{
int ret;
@@
-379,6
+399,7
@@
end:
* segfault (eventually with a "*** stack smashing detected ***" message).
* The event should contain an array of 100 FDs filled with garbage.
*/
* segfault (eventually with a "*** stack smashing detected ***" message).
* The event should contain an array of 100 FDs filled with garbage.
*/
+static
void ppoll_fds_buffer_overflow(void)
{
struct pollfd ufds[NB_FD];
void ppoll_fds_buffer_overflow(void)
{
struct pollfd ufds[NB_FD];
@@
-410,6
+431,7
@@
void ppoll_fds_buffer_overflow(void)
* cleanly fail with a "Invalid argument".
* The event should contain an empty array of FDs and overflow = 1.
*/
* cleanly fail with a "Invalid argument".
* The event should contain an empty array of FDs and overflow = 1.
*/
+static
void ppoll_fds_ulong_max(void)
{
struct pollfd ufds[NB_FD];
void ppoll_fds_ulong_max(void)
{
struct pollfd ufds[NB_FD];
@@
-440,6
+462,7
@@
void ppoll_fds_ulong_max(void)
* Pass an invalid file descriptor to pselect6(). The syscall should return
* -EBADF. The recorded event should contain a "ret = -EBADF (-9)".
*/
* Pass an invalid file descriptor to pselect6(). The syscall should return
* -EBADF. The recorded event should contain a "ret = -EBADF (-9)".
*/
+static
void pselect_invalid_fd(void)
{
fd_set rfds;
void pselect_invalid_fd(void)
{
fd_set rfds;
@@
-486,6
+509,7
@@
error:
* Invalid pointer as writefds, should output a ppoll event
* with 0 FDs.
*/
* Invalid pointer as writefds, should output a ppoll event
* with 0 FDs.
*/
+static
void pselect_invalid_pointer(void)
{
fd_set rfds;
void pselect_invalid_pointer(void)
{
fd_set rfds;
@@
-517,6
+541,7
@@
void pselect_invalid_pointer(void)
* Pass an invalid pointer to epoll_pwait, should fail with
* "Bad address", the event returns 0 FDs.
*/
* Pass an invalid pointer to epoll_pwait, should fail with
* "Bad address", the event returns 0 FDs.
*/
+static
void epoll_pwait_invalid_pointer(void)
{
int ret, epollfd;
void epoll_pwait_invalid_pointer(void)
{
int ret, epollfd;
@@
-535,7
+560,7
@@
void epoll_pwait_invalid_pointer(void)
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
if (ret < 0) {
perror("[eppoll] add");
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
if (ret < 0) {
perror("[eppoll] add");
- goto e
nd
;
+ goto e
rror
;
}
ret = syscall(SYS_epoll_pwait, epollfd,
}
ret = syscall(SYS_epoll_pwait, epollfd,
@@
-553,6
+578,8
@@
void epoll_pwait_invalid_pointer(void)
perror("# epoll_pwait");
}
perror("# epoll_pwait");
}
+error:
+ close(epollfd);
end:
return;
}
end:
return;
}
@@
-561,6
+588,7
@@
end:
* Set maxevents to INT_MAX, should output "Invalid argument"
* The event should return an empty array.
*/
* Set maxevents to INT_MAX, should output "Invalid argument"
* The event should return an empty array.
*/
+static
void epoll_pwait_int_max(void)
{
int ret, epollfd;
void epoll_pwait_int_max(void)
{
int ret, epollfd;
@@
-578,7
+606,7
@@
void epoll_pwait_int_max(void)
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
if (ret < 0) {
perror("[eppoll] add");
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, wait_fd, &epoll_event);
if (ret < 0) {
perror("[eppoll] add");
- goto e
nd
;
+ goto e
rror
;
}
ret = syscall(SYS_epoll_pwait, epollfd, &epoll_event, INT_MAX, -1,
}
ret = syscall(SYS_epoll_pwait, epollfd, &epoll_event, INT_MAX, -1,
@@
-596,10
+624,13
@@
void epoll_pwait_int_max(void)
perror("# epoll_pwait");
}
perror("# epoll_pwait");
}
+error:
+ close(epollfd);
end:
return;
}
end:
return;
}
+static
void *ppoll_writer(void *arg)
{
struct ppoll_thread_data *data = (struct ppoll_thread_data *) arg;
void *ppoll_writer(void *arg)
{
struct ppoll_thread_data *data = (struct ppoll_thread_data *) arg;
@@
-613,6
+644,7
@@
void *ppoll_writer(void *arg)
return NULL;
}
return NULL;
}
+static
void do_ppoll(int *fds, struct pollfd *ufds)
{
int i, ret;
void do_ppoll(int *fds, struct pollfd *ufds)
{
int i, ret;
@@
-642,6
+674,7
@@
void do_ppoll(int *fds, struct pollfd *ufds)
}
}
}
}
+static
void stress_ppoll(int *fds, int value)
{
pthread_t writer;
void stress_ppoll(int *fds, int value)
{
pthread_t writer;
@@
-683,6
+716,7
@@
end:
*
* ppoll should work as expected and the trace should be readable at the end.
*/
*
* ppoll should work as expected and the trace should be readable at the end.
*/
+static
void ppoll_concurrent_write(void)
{
int i, ret, fds[MAX_FDS];
void ppoll_concurrent_write(void)
{
int i, ret, fds[MAX_FDS];
@@
-708,6
+742,7
@@
void ppoll_concurrent_write(void)
return;
}
return;
}
+static
void *epoll_pwait_writer(void *addr)
{
srand(time(NULL));
void *epoll_pwait_writer(void *addr)
{
srand(time(NULL));
@@
-725,6
+760,7
@@
void *epoll_pwait_writer(void *addr)
* buffer allocated for the returned data. This should randomly segfault.
* The trace should be readable and no kernel OOPS should occur.
*/
* buffer allocated for the returned data. This should randomly segfault.
* The trace should be readable and no kernel OOPS should occur.
*/
+static
void epoll_pwait_concurrent_munmap(void)
{
int ret, epollfd, i, fds[MAX_FDS];
void epoll_pwait_concurrent_munmap(void)
{
int ret, epollfd, i, fds[MAX_FDS];
@@
-732,6
+768,9
@@
void epoll_pwait_concurrent_munmap(void)
struct epoll_event *epoll_event;
pthread_t writer;
struct epoll_event *epoll_event;
pthread_t writer;
+ for (i = 0; i < MAX_FDS; i++) {
+ fds[i] = -1;
+ }
epollfd = epoll_create(MAX_FDS);
if (epollfd < 0) {
perror("[eppoll] create");
epollfd = epoll_create(MAX_FDS);
if (epollfd < 0) {
perror("[eppoll] create");
@@
-743,7
+782,7
@@
void epoll_pwait_concurrent_munmap(void)
-1, 0);
if (epoll_event == MAP_FAILED) {
perror("mmap");
-1, 0);
if (epoll_event == MAP_FAILED) {
perror("mmap");
- goto e
nd
;
+ goto e
rror
;
}
for (i = 0; i < MAX_FDS; i++) {
}
for (i = 0; i < MAX_FDS; i++) {
@@
-756,7
+795,7
@@
void epoll_pwait_concurrent_munmap(void)
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, fds[i], epoll_event);
if (ret < 0) {
perror("[eppoll] add");
ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, fds[i], epoll_event);
if (ret < 0) {
perror("[eppoll] add");
- goto e
nd
_unmap;
+ goto e
rror
_unmap;
}
}
stop_thread = 0;
}
}
stop_thread = 0;
@@
-764,7
+803,7
@@
void epoll_pwait_concurrent_munmap(void)
(void *) epoll_event);
if (ret != 0) {
fprintf(stderr, "[error] pthread_create\n");
(void *) epoll_event);
if (ret != 0) {
fprintf(stderr, "[error] pthread_create\n");
- goto e
nd
_unmap;
+ goto e
rror
_unmap;
}
ret = epoll_pwait(epollfd, epoll_event, 1, 1, NULL);
}
ret = epoll_pwait(epollfd, epoll_event, 1, 1, NULL);
@@
-785,9
+824,9
@@
void epoll_pwait_concurrent_munmap(void)
ret = pthread_join(writer, NULL);
if (ret) {
fprintf(stderr, "[error] pthread_join\n");
ret = pthread_join(writer, NULL);
if (ret) {
fprintf(stderr, "[error] pthread_join\n");
- goto e
nd
_unmap;
+ goto e
rror
_unmap;
}
}
-e
nd
_unmap:
+e
rror
_unmap:
for (i = 0; i < MAX_FDS; i++) {
ret = close(fds[i]);
if (ret != 0) {
for (i = 0; i < MAX_FDS; i++) {
ret = close(fds[i]);
if (ret != 0) {
@@
-800,19
+839,13
@@
end_unmap:
perror("munmap");
}
perror("munmap");
}
+error:
+ close(epollfd);
end:
return;
}
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);
-}
-
+static
void print_list(void)
{
fprintf(stderr, "Test list (-t X):\n");
void print_list(void)
{
fprintf(stderr, "Test list (-t X):\n");
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