diff options
| author | kamil <kamil@NetBSD.org> | 2017-01-27 16:35:47 +0000 |
|---|---|---|
| committer | kamil <kamil@NetBSD.org> | 2017-01-27 16:35:47 +0000 |
| commit | 9bd72920755553b09bbead122b3171908dc60a30 (patch) | |
| tree | 3f73b66090351ee32a0aa791474e8cf81846869b /tests/kernel | |
| parent | 347a9ba3661159feec6ed590976d1557da317efc (diff) | |
Add new tests signal{9,10} in t_ptrace_wait{,3,4,6,id,pid}
signal9:
Verify that masking SIGTRAP in tracee does not stop tracer from
catching PTRACE_LWP_CREATE breakpoint
signal10:
Verify that masking SIGTRAP in tracee does not stop tracer from
catching PTRACE_LWP_EXIT breakpoint
Both tests are broken and linked with PR kern/51918.
Sponsored by <The NetBSD Foundation>
Diffstat (limited to 'tests/kernel')
| -rw-r--r-- | tests/kernel/t_ptrace_wait.c | 214 |
1 files changed, 212 insertions, 2 deletions
diff --git a/tests/kernel/t_ptrace_wait.c b/tests/kernel/t_ptrace_wait.c index 81d6056203f..b8c599058ea 100644 --- a/tests/kernel/t_ptrace_wait.c +++ b/tests/kernel/t_ptrace_wait.c @@ -1,4 +1,4 @@ -/* $NetBSD: t_ptrace_wait.c,v 1.67 2017/01/27 16:06:23 kamil Exp $ */ +/* $NetBSD: t_ptrace_wait.c,v 1.68 2017/01/27 16:35:47 kamil Exp $ */ /*- * Copyright (c) 2016 The NetBSD Foundation, Inc. @@ -27,7 +27,7 @@ */ #include <sys/cdefs.h> -__RCSID("$NetBSD: t_ptrace_wait.c,v 1.67 2017/01/27 16:06:23 kamil Exp $"); +__RCSID("$NetBSD: t_ptrace_wait.c,v 1.68 2017/01/27 16:35:47 kamil Exp $"); #include <sys/param.h> #include <sys/types.h> @@ -6376,6 +6376,214 @@ ATF_TC_BODY(signal8, tc) TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); } +ATF_TC(signal9); +ATF_TC_HEAD(signal9, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Verify that masking SIGTRAP in tracee does not stop tracer from " + "catching PTRACE_LWP_CREATE breakpoint"); +} + +ATF_TC_BODY(signal9, tc) +{ + const int exitval = 5; + const int sigval = SIGSTOP; + const int sigmasked = SIGTRAP; + pid_t child, wpid; +#if defined(TWAIT_HAVE_STATUS) + int status; +#endif + sigset_t intmask; + ptrace_state_t state; + const int slen = sizeof(state); + ptrace_event_t event; + const int elen = sizeof(event); + ucontext_t uc; + lwpid_t lid; + static const size_t ssize = 16*1024; + void *stack; + + atf_tc_expect_fail("PR kern/51918"); + + printf("Before forking process PID=%d\n", getpid()); + ATF_REQUIRE((child = fork()) != -1); + if (child == 0) { + printf("Before calling PT_TRACE_ME from child %d\n", getpid()); + FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); + + sigemptyset(&intmask); + sigaddset(&intmask, sigmasked); + sigprocmask(SIG_BLOCK, &intmask, NULL); + + printf("Before raising %s from child\n", strsignal(sigval)); + FORKEE_ASSERT(raise(sigval) == 0); + + printf("Before allocating memory for stack in child\n"); + FORKEE_ASSERT((stack = malloc(ssize)) != NULL); + + printf("Before making context for new lwp in child\n"); + _lwp_makecontext(&uc, lwp_main_func, NULL, NULL, stack, ssize); + + printf("Before creating new in child\n"); + FORKEE_ASSERT(_lwp_create(&uc, 0, &lid) == 0); + + printf("Before waiting for lwp %d to exit\n", lid); + FORKEE_ASSERT(_lwp_wait(lid, NULL) == 0); + + printf("Before verifying that reported %d and running lid %d " + "are the same\n", lid, the_lwp_id); + FORKEE_ASSERT_EQ(lid, the_lwp_id); + + printf("Before exiting of the child process\n"); + _exit(exitval); + } + printf("Parent process PID=%d, child's PID=%d\n", getpid(), child); + + printf("Before calling %s() for the child\n", TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_stopped(status, sigval); + + printf("Set empty EVENT_MASK for the child %d\n", child); + event.pe_set_event = PTRACE_LWP_CREATE; + ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1); + + printf("Before resuming the child process where it left off and " + "without signal to be sent\n"); + ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); + + printf("Before calling %s() for the child - expected stopped " + "SIGTRAP\n", TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_stopped(status, sigmasked); + + ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1); + + ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_LWP_CREATE); + + lid = state.pe_lwp; + printf("Reported PTRACE_LWP_CREATE event with lid %d\n", lid); + + printf("Before resuming the child process where it left off and " + "without signal to be sent\n"); + ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); + + printf("Before calling %s() for the child - expected exited\n", + TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_exited(status, exitval); + + printf("Before calling %s() for the child - expected no process\n", + TWAIT_FNAME); + TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); +} + +ATF_TC(signal10); +ATF_TC_HEAD(signal10, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Verify that masking SIGTRAP in tracee does not stop tracer from " + "catching PTRACE_LWP_EXIT breakpoint"); +} + +ATF_TC_BODY(signal10, tc) +{ + const int exitval = 5; + const int sigval = SIGSTOP; + const int sigmasked = SIGTRAP; + pid_t child, wpid; +#if defined(TWAIT_HAVE_STATUS) + int status; +#endif + sigset_t intmask; + ptrace_state_t state; + const int slen = sizeof(state); + ptrace_event_t event; + const int elen = sizeof(event); + ucontext_t uc; + lwpid_t lid; + static const size_t ssize = 16*1024; + void *stack; + + atf_tc_expect_fail("PR kern/51918"); + + printf("Before forking process PID=%d\n", getpid()); + ATF_REQUIRE((child = fork()) != -1); + if (child == 0) { + printf("Before calling PT_TRACE_ME from child %d\n", getpid()); + FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); + + sigemptyset(&intmask); + sigaddset(&intmask, sigmasked); + sigprocmask(SIG_BLOCK, &intmask, NULL); + + printf("Before raising %s from child\n", strsignal(sigval)); + FORKEE_ASSERT(raise(sigval) == 0); + + printf("Before allocating memory for stack in child\n"); + FORKEE_ASSERT((stack = malloc(ssize)) != NULL); + + printf("Before making context for new lwp in child\n"); + _lwp_makecontext(&uc, lwp_main_func, NULL, NULL, stack, ssize); + + printf("Before creating new in child\n"); + FORKEE_ASSERT(_lwp_create(&uc, 0, &lid) == 0); + + printf("Before waiting for lwp %d to exit\n", lid); + FORKEE_ASSERT(_lwp_wait(lid, NULL) == 0); + + printf("Before verifying that reported %d and running lid %d " + "are the same\n", lid, the_lwp_id); + FORKEE_ASSERT_EQ(lid, the_lwp_id); + + printf("Before exiting of the child process\n"); + _exit(exitval); + } + printf("Parent process PID=%d, child's PID=%d\n", getpid(), child); + + printf("Before calling %s() for the child\n", TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_stopped(status, sigval); + + printf("Set empty EVENT_MASK for the child %d\n", child); + event.pe_set_event = PTRACE_LWP_EXIT; + ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, child, &event, elen) != -1); + + printf("Before resuming the child process where it left off and " + "without signal to be sent\n"); + ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); + + printf("Before calling %s() for the child - expected stopped " + "SIGTRAP\n", TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_stopped(status, sigmasked); + + ATF_REQUIRE(ptrace(PT_GET_PROCESS_STATE, child, &state, slen) != -1); + + ATF_REQUIRE_EQ(state.pe_report_event, PTRACE_LWP_EXIT); + + lid = state.pe_lwp; + printf("Reported PTRACE_LWP_EXIT event with lid %d\n", lid); + + printf("Before resuming the child process where it left off and " + "without signal to be sent\n"); + ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); + + printf("Before calling %s() for the child - expected exited\n", + TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_exited(status, exitval); + + printf("Before calling %s() for the child - expected no process\n", + TWAIT_FNAME); + TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); +} + ATF_TP_ADD_TCS(tp) { setvbuf(stdout, NULL, _IONBF, 0); @@ -6486,6 +6694,8 @@ ATF_TP_ADD_TCS(tp) ATF_TP_ADD_TC_HAVE_PID(tp, signal6); ATF_TP_ADD_TC_HAVE_PID(tp, signal7); ATF_TP_ADD_TC(tp, signal8); + ATF_TP_ADD_TC(tp, signal9); + ATF_TP_ADD_TC(tp, signal10); return atf_no_error(); } |
