tests: check tracing of looping threads
* test/many_looping_threads.c: Remove. * test/.gitignore: Remove many_looping_threads. * test/Makefile (PROGS): Likewise. (many_looping_threads): Remove. * tests/looping_threads.c: New file. * tests/looping_threads.test: New test. * tests/.gitignore: Add looping_threads. * tests/Makefile.am (check_PROGRAMS): Likewise. (looping_threads_LDADD): New variable. (MISC_TESTS, XFAIL_TESTS): Add looping_threads.test.
This commit is contained in:
Eugene Syromyatnikov
parent
2c8b6de913
commit
c1838de552
1
test/.gitignore
vendored
1
test/.gitignore
vendored
@ -1,7 +1,6 @@
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childthread
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clone
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leaderkill
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many_looping_threads
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mmap_offset_decode
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mtd
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seccomp
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@ -3,8 +3,7 @@ CFLAGS += -Wall
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PROGS = \
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sig skodic clone leaderkill childthread \
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sigkill_rain wait_must_be_interruptible threaded_execve \
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mtd ubi seccomp sfd mmap_offset_decode x32_lseek x32_mmap \
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many_looping_threads
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mtd ubi seccomp sfd mmap_offset_decode x32_lseek x32_mmap
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all: $(PROGS)
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@ -12,8 +11,6 @@ leaderkill: LDFLAGS += -pthread
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childthread: LDFLAGS += -pthread
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many_looping_threads: LDFLAGS += -pthread
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clean distclean:
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rm -f *.o core $(PROGS) *.gdb
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@ -1,49 +0,0 @@
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// This testcase, when run with large number of threads
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// under stace -f, may never finish because strace does not
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// ensure any fairness in thread scheduling:
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// it restarts threads as they stop. If daughter threads crowd out
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// the "mother" and _they_ get continually restarted by strace,
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// the end of spawning loop will never be reached.
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//
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// Also, it is a testcase which triggers the
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// "strace: Exit of unknown pid 32457 seen"
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// message when on testcase exit, strace sees deaths of newly-attached
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// threads _before_ their first syscall stop.
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//
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#include <stdio.h>
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#include <pthread.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <signal.h>
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#include <stdlib.h>
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static int thd_no;
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static void *sub_thd(void *c)
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{
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dprintf(1, "sub-thread %d created\n", ++thd_no);
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for (;;)
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getuid();
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return NULL;
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}
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int main(int argc, char *argv[])
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{
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int i;
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pthread_t *thd;
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int num_threads = 1;
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if (argv[1])
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num_threads = atoi(argv[1]);
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thd = malloc(num_threads * sizeof(thd[0]));
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dprintf(1, "test start, num_threads:%d...\n", num_threads);
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for (i = 0; i < num_threads; i++) {
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pthread_create(&thd[i], NULL, sub_thd, NULL);
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dprintf(1, "after pthread_create\n");
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}
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/* Exit. This kills all threads */
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return 0;
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}
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1
tests/.gitignore
vendored
1
tests/.gitignore
vendored
@ -220,6 +220,7 @@ list_sigaction_signum
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llseek
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localtime
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lookup_dcookie
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looping_threads
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lseek
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lstat
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lstat64
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@ -109,6 +109,7 @@ check_PROGRAMS = $(PURE_EXECUTABLES) \
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ksysent \
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list_sigaction_signum \
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localtime \
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looping_threads \
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mmsg-silent \
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mmsg_name-v \
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msg_control-v \
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@ -172,6 +173,7 @@ fstat64_CPPFLAGS = $(AM_CPPFLAGS) -D_FILE_OFFSET_BITS=64
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fstatat64_CPPFLAGS = $(AM_CPPFLAGS) -D_FILE_OFFSET_BITS=64
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ftruncate64_CPPFLAGS = $(AM_CPPFLAGS) -D_FILE_OFFSET_BITS=64
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localtime_LDADD = $(clock_LIBS) $(LDADD)
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looping_threads_LDADD = -lpthread $(LDADD)
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lstat64_CPPFLAGS = $(AM_CPPFLAGS) -D_FILE_OFFSET_BITS=64
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mmap64_CPPFLAGS = $(AM_CPPFLAGS) -D_FILE_OFFSET_BITS=64
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mmap64_Xabbrev_CPPFLAGS = $(AM_CPPFLAGS) -D_FILE_OFFSET_BITS=64
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@ -307,6 +309,7 @@ MISC_TESTS = \
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interactive_block.test \
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ksysent.test \
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localtime.test \
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looping_threads.test \
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opipe.test \
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options-syntax.test \
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pc.test \
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@ -348,7 +351,8 @@ TESTS = $(GEN_TESTS) $(DECODER_TESTS) $(MISC_TESTS) $(STACKTRACE_TESTS)
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XFAIL_TESTS_ =
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XFAIL_TESTS_m32 = $(STACKTRACE_TESTS)
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XFAIL_TESTS_mx32 = $(STACKTRACE_TESTS)
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XFAIL_TESTS = $(XFAIL_TESTS_$(MPERS_NAME)) $(XFAIL_TESTS_$(ARCH))
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XFAIL_TESTS = $(XFAIL_TESTS_$(MPERS_NAME)) $(XFAIL_TESTS_$(ARCH)) \
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looping_threads.test
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TEST_LOG_COMPILER = env
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AM_TEST_LOG_FLAGS = STRACE_ARCH=$(ARCH) STRACE_NATIVE_ARCH=$(NATIVE_ARCH) \
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110
tests/looping_threads.c
Normal file
110
tests/looping_threads.c
Normal file
@ -0,0 +1,110 @@
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/*
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* Check tracing of looping threads.
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*
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* Copyright (c) 2009-2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <assert.h>
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#include <errno.h>
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#include <pthread.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/wait.h>
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static void *
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thread(void *arg)
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{
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for (;;)
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getuid();
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return arg;
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}
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int
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main(int ac, const char *av[])
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{
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assert(ac == 3);
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int timeout = atoi(av[1]);
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assert(timeout > 0);
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int num_threads = atoi(av[2]);
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assert(num_threads > 0);
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/* Create a new process group. */
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if (setpgid(0, 0))
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perror_msg_and_fail("setpgid");
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/*
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* When the main process terminates, the process group becomes orphaned.
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* If any member of the orphaned process group is stopped, then
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* a SIGHUP signal followed by a SIGCONT signal is sent to each process
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* in the orphaned process group.
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* Create a process in a stopped state to activate this behaviour.
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*/
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pid_t stopped = fork();
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if (stopped < 0)
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perror_msg_and_fail("fork");
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if (!stopped) {
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raise(SIGSTOP);
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_exit(0);
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}
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const sigset_t set = {};
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const struct sigaction act = { .sa_handler = SIG_DFL };
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if (sigaction(SIGALRM, &act, NULL))
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perror_msg_and_fail("sigaction");
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if (sigprocmask(SIG_SETMASK, &set, NULL))
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perror_msg_and_fail("sigprocmask");
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alarm(timeout);
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/*
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* Create all threads in a subprocess, this guarantees that
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* their tracer will not be their parent.
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*/
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pid_t pid = fork();
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if (pid < 0)
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perror_msg_and_fail("fork");
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if (!pid) {
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for (int i = 0; i < num_threads; i++) {
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pthread_t t;
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if ((errno = pthread_create(&t, NULL, thread, NULL)))
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perror_msg_and_fail("pthread_create #%d", i);
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}
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/* This terminates all threads. */
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_exit(0);
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}
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int s;
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if (waitpid(pid, &s, 0) != pid)
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perror_msg_and_fail("waitpid");
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assert(WIFEXITED(s));
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return WEXITSTATUS(s);
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}
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37
tests/looping_threads.test
Executable file
37
tests/looping_threads.test
Executable file
@ -0,0 +1,37 @@
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#!/bin/sh
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#
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# Check tracing of looping threads.
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#
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# Copyright (c) 2009-2018 The strace developers.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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. "${srcdir=.}/init.sh"
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check_prog nproc
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timeout="$(($TIMEOUT_DURATION/10))"
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nproc="$((64+$timeout+$(nproc)))"
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run_prog "../$NAME" "$timeout" "$nproc"
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run_strace -f -qq -enone -esignal=none $args
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