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[src/trunk]: src/tests/lib/libc/sys Add more tests for variations of unrelate...
details: https://anonhg.NetBSD.org/src/rev/d1a9f83cb13b
branches: trunk
changeset: 449047:d1a9f83cb13b
user: kamil <kamil%NetBSD.org@localhost>
date: Wed Feb 20 07:18:18 2019 +0000
description:
Add more tests for variations of unrelated_tracer_sees_crash in ATF
New tests:
- unrelated_tracer_sees_signalmasked_crash_trap
- unrelated_tracer_sees_signalmasked_crash_segv
- unrelated_tracer_sees_signalmasked_crash_ill
- unrelated_tracer_sees_signalmasked_crash_fpe
- unrelated_tracer_sees_signalmasked_crash_bus
- unrelated_tracer_sees_signalignored_crash_trap
- unrelated_tracer_sees_signalignored_crash_segv
- unrelated_tracer_sees_signalignored_crash_ill
- unrelated_tracer_sees_signalignored_crash_fpe
- unrelated_tracer_sees_signalignored_crash_bus
All these tests are failing with the current kernel.
diffstat:
tests/lib/libc/sys/t_ptrace_wait.c | 207 +++++++++++++++++++++++++++++++++++-
1 files changed, 197 insertions(+), 10 deletions(-)
diffs (truncated from 305 to 300 lines):
diff -r 68ba48848a88 -r d1a9f83cb13b tests/lib/libc/sys/t_ptrace_wait.c
--- a/tests/lib/libc/sys/t_ptrace_wait.c Wed Feb 20 06:04:28 2019 +0000
+++ b/tests/lib/libc/sys/t_ptrace_wait.c Wed Feb 20 07:18:18 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_ptrace_wait.c,v 1.93 2019/02/20 05:20:05 kamil Exp $ */
+/* $NetBSD: t_ptrace_wait.c,v 1.94 2019/02/20 07:18:18 kamil Exp $ */
/*-
* Copyright (c) 2016, 2017, 2018, 2019 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace_wait.c,v 1.93 2019/02/20 05:20:05 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace_wait.c,v 1.94 2019/02/20 07:18:18 kamil Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -1822,8 +1822,9 @@
#if defined(TWAIT_HAVE_PID)
static void
-unrelated_tracer_sees_crash(int sig)
+unrelated_tracer_sees_crash(int sig, bool masked, bool ignored)
{
+ const int sigval = SIGSTOP;
struct msg_fds parent_tracee, parent_tracer;
const int exitval = 10;
pid_t tracee, tracer, wpid;
@@ -1831,7 +1832,16 @@
#if defined(TWAIT_HAVE_STATUS)
int status;
#endif
+ struct sigaction sa;
struct ptrace_siginfo info;
+ sigset_t intmask;
+ struct kinfo_proc2 kp;
+ size_t len = sizeof(kp);
+
+ int name[6];
+ const size_t namelen = __arraycount(name);
+ ki_sigset_t kp_sigmask;
+ ki_sigset_t kp_sigignore;
#ifndef PTRACE_ILLEGAL_ASM
if (sig == SIGILL)
@@ -1840,6 +1850,10 @@
memset(&info, 0, sizeof(info));
+ if (masked || ignored)
+ atf_tc_expect_fail("Unexpected sigmask reset on crash under "
+ "debugger");
+
DPRINTF("Spawn tracee\n");
SYSCALL_REQUIRE(msg_open(&parent_tracee) == 0);
tracee = atf_utils_fork();
@@ -1847,6 +1861,22 @@
// Wait for parent to let us crash
CHILD_FROM_PARENT("exit tracee", parent_tracee, msg);
+ if (masked) {
+ sigemptyset(&intmask);
+ sigaddset(&intmask, sig);
+ sigprocmask(SIG_BLOCK, &intmask, NULL);
+ }
+
+ if (ignored) {
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = SIG_IGN;
+ sigemptyset(&sa.sa_mask);
+ FORKEE_ASSERT(sigaction(sig, &sa, NULL) != -1);
+ }
+
+ DPRINTF("Before raising %s from child\n", strsignal(sigval));
+ FORKEE_ASSERT(raise(sigval) == 0);
+
DPRINTF("Before executing a trap\n");
switch (sig) {
case SIGTRAP:
@@ -1891,6 +1921,19 @@
forkee_status_stopped(status, SIGSTOP);
+ DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for the "
+ "traced process\n");
+ SYSCALL_REQUIRE(
+ ptrace(PT_GET_SIGINFO, tracee, &info, sizeof(info)) != -1);
+
+ DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ DPRINTF("Signal properties: si_signo=%#x si_code=%#x "
+ "si_errno=%#x\n", info.psi_siginfo.si_signo,
+ info.psi_siginfo.si_code, info.psi_siginfo.si_errno);
+
+ FORKEE_ASSERT_EQ(info.psi_siginfo.si_signo, SIGSTOP);
+ FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, SI_USER);
+
/* Resume tracee with PT_CONTINUE */
FORKEE_ASSERT(ptrace(PT_CONTINUE, tracee, (void *)1, 0) != -1);
@@ -1904,6 +1947,43 @@
FORKEE_REQUIRE_SUCCESS(
wpid = TWAIT_GENERIC(tracee, &status, 0), tracee);
+ forkee_status_stopped(status, sigval);
+
+ DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for the "
+ "traced process\n");
+ SYSCALL_REQUIRE(
+ ptrace(PT_GET_SIGINFO, tracee, &info, sizeof(info)) != -1);
+
+ DPRINTF("Signal traced to lwpid=%d\n", info.psi_lwpid);
+ DPRINTF("Signal properties: si_signo=%#x si_code=%#x "
+ "si_errno=%#x\n", info.psi_siginfo.si_signo,
+ info.psi_siginfo.si_code, info.psi_siginfo.si_errno);
+
+ FORKEE_ASSERT_EQ(info.psi_siginfo.si_signo, sigval);
+ FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, SI_LWP);
+
+ name[0] = CTL_KERN,
+ name[1] = KERN_PROC2,
+ name[2] = KERN_PROC_PID;
+ name[3] = tracee;
+ name[4] = sizeof(kp);
+ name[5] = 1;
+
+ FORKEE_ASSERT_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0);
+
+ if (masked)
+ kp_sigmask = kp.p_sigmask;
+
+ if (ignored)
+ kp_sigignore = kp.p_sigignore;
+
+ /* Resume tracee with PT_CONTINUE */
+ FORKEE_ASSERT(ptrace(PT_CONTINUE, tracee, (void *)1, 0) != -1);
+
+ /* Wait for tracee and assert that it exited */
+ FORKEE_REQUIRE_SUCCESS(
+ wpid = TWAIT_GENERIC(tracee, &status, 0), tracee);
+
forkee_status_stopped(status, sig);
DPRINTF("Before calling ptrace(2) with PT_GET_SIGINFO for the "
@@ -1917,6 +1997,43 @@
info.psi_siginfo.si_code, info.psi_siginfo.si_errno);
FORKEE_ASSERT_EQ(info.psi_siginfo.si_signo, sig);
+
+ FORKEE_ASSERT_EQ(sysctl(name, namelen, &kp, &len, NULL, 0), 0);
+
+ if (masked) {
+ DPRINTF("kp_sigmask="
+ "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02"
+ PRIx32 "\n",
+ kp_sigmask.__bits[0], kp_sigmask.__bits[1],
+ kp_sigmask.__bits[2], kp_sigmask.__bits[3]);
+
+ DPRINTF("kp.p_sigmask="
+ "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02"
+ PRIx32 "\n",
+ kp.p_sigmask.__bits[0], kp.p_sigmask.__bits[1],
+ kp.p_sigmask.__bits[2], kp.p_sigmask.__bits[3]);
+
+ FORKEE_ASSERTX(!memcmp(&kp_sigmask, &kp.p_sigmask,
+ sizeof(kp_sigmask)));
+ }
+
+ if (ignored) {
+ DPRINTF("kp_sigignore="
+ "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02"
+ PRIx32 "\n",
+ kp_sigignore.__bits[0], kp_sigignore.__bits[1],
+ kp_sigignore.__bits[2], kp_sigignore.__bits[3]);
+
+ DPRINTF("kp.p_sigignore="
+ "%#02" PRIx32 "%02" PRIx32 "%02" PRIx32 "%02"
+ PRIx32 "\n",
+ kp.p_sigignore.__bits[0], kp.p_sigignore.__bits[1],
+ kp.p_sigignore.__bits[2], kp.p_sigignore.__bits[3]);
+
+ FORKEE_ASSERTX(!memcmp(&kp_sigignore, &kp.p_sigignore,
+ sizeof(kp_sigignore)));
+ }
+
switch (sig) {
case SIGTRAP:
FORKEE_ASSERT_EQ(info.psi_siginfo.si_code, TRAP_BRKPT);
@@ -1942,10 +2059,6 @@
forkee_status_signaled(status, SIGKILL, 0);
- DPRINTF("Before calling %s() for tracee\n", TWAIT_FNAME);
- TWAIT_REQUIRE_FAILURE(ECHILD,
- wpid = TWAIT_GENERIC(tracee, &status, 0));
-
/* Inform parent that tracer is exiting normally */
CHILD_TO_PARENT("tracer done", parent_tracer, msg);
@@ -1992,14 +2105,14 @@
ATF_TC_HEAD(test, tc) \
{ \
atf_tc_set_md_var(tc, "descr", \
- "Assert that an unrelated tracer sees crash signal from the " \
- "debuggee"); \
+ "Assert that an unrelated tracer sees crash signal from " \
+ "the debuggee"); \
} \
\
ATF_TC_BODY(test, tc) \
{ \
\
- unrelated_tracer_sees_crash(sig); \
+ unrelated_tracer_sees_crash(sig, false, false); \
}
UNRELATED_TRACER_SEES_CRASH(unrelated_tracer_sees_crash_trap, SIGTRAP)
@@ -2007,6 +2120,58 @@
UNRELATED_TRACER_SEES_CRASH(unrelated_tracer_sees_crash_ill, SIGILL)
UNRELATED_TRACER_SEES_CRASH(unrelated_tracer_sees_crash_fpe, SIGFPE)
UNRELATED_TRACER_SEES_CRASH(unrelated_tracer_sees_crash_bus, SIGBUS)
+
+#define UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH(test, sig) \
+ATF_TC(test); \
+ATF_TC_HEAD(test, tc) \
+{ \
+ atf_tc_set_md_var(tc, "descr", \
+ "Assert that an unrelated tracer sees crash signal from " \
+ "the debuggee with masked signal"); \
+} \
+ \
+ATF_TC_BODY(test, tc) \
+{ \
+ \
+ unrelated_tracer_sees_crash(sig, true, false); \
+}
+
+UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH(
+ unrelated_tracer_sees_signalmasked_crash_trap, SIGTRAP)
+UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH(
+ unrelated_tracer_sees_signalmasked_crash_segv, SIGSEGV)
+UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH(
+ unrelated_tracer_sees_signalmasked_crash_ill, SIGILL)
+UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH(
+ unrelated_tracer_sees_signalmasked_crash_fpe, SIGFPE)
+UNRELATED_TRACER_SEES_SIGNALMASKED_CRASH(
+ unrelated_tracer_sees_signalmasked_crash_bus, SIGBUS)
+
+#define UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH(test, sig) \
+ATF_TC(test); \
+ATF_TC_HEAD(test, tc) \
+{ \
+ atf_tc_set_md_var(tc, "descr", \
+ "Assert that an unrelated tracer sees crash signal from " \
+ "the debuggee with signal ignored"); \
+} \
+ \
+ATF_TC_BODY(test, tc) \
+{ \
+ \
+ unrelated_tracer_sees_crash(sig, false, true); \
+}
+
+UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH(
+ unrelated_tracer_sees_signalignored_crash_trap, SIGTRAP)
+UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH(
+ unrelated_tracer_sees_signalignored_crash_segv, SIGSEGV)
+UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH(
+ unrelated_tracer_sees_signalignored_crash_ill, SIGILL)
+UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH(
+ unrelated_tracer_sees_signalignored_crash_fpe, SIGFPE)
+UNRELATED_TRACER_SEES_SIGNALIGNORED_CRASH(
+ unrelated_tracer_sees_signalignored_crash_bus, SIGBUS)
#endif
/// ----------------------------------------------------------------------------
@@ -5986,6 +6151,28 @@
ATF_TP_ADD_TC_HAVE_PID(tp, unrelated_tracer_sees_crash_fpe);
ATF_TP_ADD_TC_HAVE_PID(tp, unrelated_tracer_sees_crash_bus);
+ ATF_TP_ADD_TC_HAVE_PID(tp,
+ unrelated_tracer_sees_signalmasked_crash_trap);
+ ATF_TP_ADD_TC_HAVE_PID(tp,
+ unrelated_tracer_sees_signalmasked_crash_segv);
+ ATF_TP_ADD_TC_HAVE_PID(tp,
+ unrelated_tracer_sees_signalmasked_crash_ill);
+ ATF_TP_ADD_TC_HAVE_PID(tp,
+ unrelated_tracer_sees_signalmasked_crash_fpe);
+ ATF_TP_ADD_TC_HAVE_PID(tp,
+ unrelated_tracer_sees_signalmasked_crash_bus);
+
+ ATF_TP_ADD_TC_HAVE_PID(tp,
+ unrelated_tracer_sees_signalignored_crash_trap);
+ ATF_TP_ADD_TC_HAVE_PID(tp,
+ unrelated_tracer_sees_signalignored_crash_segv);
+ ATF_TP_ADD_TC_HAVE_PID(tp,
+ unrelated_tracer_sees_signalignored_crash_ill);
+ ATF_TP_ADD_TC_HAVE_PID(tp,
+ unrelated_tracer_sees_signalignored_crash_fpe);
+ ATF_TP_ADD_TC_HAVE_PID(tp,
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