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[src/trunk]: src/tests/kernel Add new tests signal{9, 10} in t_ptrace_wait{, 3, ...
details: https://anonhg.NetBSD.org/src/rev/f17af1ef989a
branches: trunk
changeset: 821188:f17af1ef989a
user: kamil <kamil%NetBSD.org@localhost>
date: Fri Jan 27 16:35:47 2017 +0000
description:
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:
tests/kernel/t_ptrace_wait.c | 214 ++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 212 insertions(+), 2 deletions(-)
diffs (242 lines):
diff -r 12a4aa36bef3 -r f17af1ef989a tests/kernel/t_ptrace_wait.c
--- a/tests/kernel/t_ptrace_wait.c Fri Jan 27 16:06:23 2017 +0000
+++ b/tests/kernel/t_ptrace_wait.c Fri Jan 27 16:35:47 2017 +0000
@@ -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 @@
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_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();
}
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