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From f5888ee34b2cca8562d2878dbc6b2db9b8256672 Mon Sep 17 00:00:00 2001
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From: Eugene Syromyatnikov <evgsyr@gmail.com>
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Date: Fri, 1 Feb 2019 11:04:51 +0100
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Subject: [PATCH 22/27] tests: add kill_child test
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This tests repeatedly creates and kills children, so some corner
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cases in handling of not-quite-existing processes can be observed.
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Previously, strace was crashing in the following situation:
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13994 ????( <unfinished ...>
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...
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13994 <... ???? resumed>) = ?
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as tcp->s_ent wasn't initialised on syscall entering and
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strace.c:print_event_exit segfaulted when tried to access
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tcp->s_ent->sys_name.
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* tests/kill_child.c: New file.
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* tests/kill_child.test: New test.
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* tests/.gitignore: Add kill_child.
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* tests/Makefile.am (check_PROGRAMS): Likewise.
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(MISC_TESTS): Add kill_child.test.
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Skipped files (not present in dist tarball):
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tests/.gitignore
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Additional changes:
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tests/Makefile.in (auto-generated from tests/Makefile.am)
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tests-m32/Makefile.in (auto-generated from tests-m32/Makefile.am)
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tests-m32/kill_child.c (copy of tests/kill_child.c)
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tests-m32/kill_child.test (copy of tests/kill_child.test)
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tests-m32/Makefile.in (auto-generted from tests-mx32/Makefile.am)
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tests-mx32/kill_child.c (copy of tests/kill_child.c)
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tests-mx32/kill_child.test (copy of tests/kill_child.test)
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Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
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---
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tests/.gitignore | 1 +
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tests/Makefile.am | 2 ++
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tests/kill_child.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
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tests/kill_child.test | 31 +++++++++++++++++++++++
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4 files changed, 103 insertions(+)
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create mode 100644 tests/kill_child.c
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create mode 100755 tests/kill_child.test
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Index: strace-4.24/tests/Makefile.am
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===================================================================
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--- strace-4.24.orig/tests/Makefile.am 2019-03-10 05:34:51.995141191 +0100
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+++ strace-4.24/tests/Makefile.am 2019-03-10 05:40:37.969676713 +0100
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@@ -104,6 +104,7 @@
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ioctl_perf-success \
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ioctl_rtc-v \
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is_linux_mips_n64 \
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+ kill_child \
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ksysent \
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list_sigaction_signum \
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localtime \
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@@ -299,6 +300,7 @@
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get_regs.test \
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inject-nf.test \
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interactive_block.test \
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+ kill_child.test \
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ksysent.test \
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localtime.test \
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opipe.test \
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Index: strace-4.24/tests/kill_child.c
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ strace-4.24/tests/kill_child.c 2019-03-10 05:40:37.970676703 +0100
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@@ -0,0 +1,69 @@
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+/*
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+ * Check for the corner case that previously lead to segfault
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+ * due to an attempt to access unitialised tcp->s_ent.
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+ *
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+ * 13994 ????( <unfinished ...>
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+ * ...
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+ * 13994 <... ???? resumed>) = ?
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+ *
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+ * Copyright (c) 2019 The strace developers.
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+ * All rights reserved.
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+ *
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+ * SPDX-License-Identifier: GPL-2.0-or-later
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+ */
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+
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+#include "tests.h"
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+
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+#include <sched.h>
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+#include <signal.h>
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+#include <unistd.h>
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+#include <sys/mman.h>
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+#include <sys/wait.h>
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+
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+#define ITERS 10000
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+#define SC_ITERS 10000
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+
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+int
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+main(void)
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+{
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+ volatile sig_atomic_t *const mem =
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+ mmap(NULL, get_page_size(), PROT_READ | PROT_WRITE,
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+ MAP_SHARED | MAP_ANONYMOUS, -1, 0);
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+ if (mem == MAP_FAILED)
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+ perror_msg_and_fail("mmap");
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+
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+ for (unsigned int i = 0; i < ITERS; ++i) {
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+ mem[0] = mem[1] = 0;
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+
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+ const pid_t pid = fork();
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+ if (pid < 0)
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+ perror_msg_and_fail("fork");
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+
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+ if (!pid) {
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+ /* wait for the parent */
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+ while (!mem[0])
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+ ;
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+ /* let the parent know we are running */
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+ mem[1] = 1;
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+
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+ for (unsigned int j = 0; j < SC_ITERS; j++)
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+ sched_yield();
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+
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+ pause();
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+ return 0;
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+ }
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+
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+ /* let the child know we are running */
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+ mem[0] = 1;
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+ /* wait for the child */
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+ while (!mem[1])
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+ ;
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+
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+ if (kill(pid, SIGKILL))
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+ perror_msg_and_fail("kill");
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+ if (wait(NULL) != pid)
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+ perror_msg_and_fail("wait");
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+ }
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+
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+ return 0;
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+}
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Index: strace-4.24/tests/kill_child.test
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ strace-4.24/tests/kill_child.test 2019-03-10 05:40:37.970676703 +0100
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@@ -0,0 +1,31 @@
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+#!/bin/sh
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+#
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+# Check whether repeated killing of just forked processes crashes strace.
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+#
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+# Copyright (c) 2019 The strace developers.
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+# All rights reserved.
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+#
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+# SPDX-License-Identifier: GPL-2.0-or-later
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+
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+. "${srcdir=.}/init.sh"
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+
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+run_prog_skip_if_failed date +%s > /dev/null
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+s0="$(date +%s)"
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+
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+run_prog
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+args="-f -qq -e signal=none -e trace=sched_yield,/kill $args"
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+
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+# Run strace until the known corner case is observed.
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+while :; do
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+ run_strace $args
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+
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+ # Printing of "<... SYSCALL resumed>" in strace.c:print_event_exit
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+ # used to segfault when the syscall number had not been obtained
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+ # on syscall entering.
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+ grep -q '^[1-9][0-9]* <\.\.\. ???? resumed>) \+= ?$' "$LOG" && exit 0
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+
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+ s1="$(date +%s)"
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+ if [ "$(($s1-$s0))" -gt "$(($TIMEOUT_DURATION/2))" ]; then
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+ skip_ 'Unable to reproduce <... ???? resumed>'
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+ fi
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+done
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Index: strace-4.24/tests/Makefile.in
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===================================================================
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--- strace-4.24.orig/tests/Makefile.in 2019-03-10 05:34:51.995141191 +0100
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+++ strace-4.24/tests/Makefile.in 2019-03-10 05:40:37.973676673 +0100
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@@ -153,8 +153,9 @@
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ioctl_evdev-v$(EXEEXT) ioctl_loop-nv$(EXEEXT) \
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ioctl_loop-v$(EXEEXT) ioctl_nsfs$(EXEEXT) \
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ioctl_perf-success$(EXEEXT) ioctl_rtc-v$(EXEEXT) \
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- is_linux_mips_n64$(EXEEXT) ksysent$(EXEEXT) \
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- list_sigaction_signum$(EXEEXT) localtime$(EXEEXT) \
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+ is_linux_mips_n64$(EXEEXT) kill_child$(EXEEXT) \
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+ ksysent$(EXEEXT) list_sigaction_signum$(EXEEXT) \
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+ localtime$(EXEEXT) \
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mmsg-silent$(EXEEXT) mmsg_name-v$(EXEEXT) \
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msg_control-v$(EXEEXT) net-accept-connect$(EXEEXT) \
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net-tpacket_stats-success$(EXEEXT) netlink_inet_diag$(EXEEXT) \
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@@ -1186,6 +1187,10 @@
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kill_OBJECTS = kill.$(OBJEXT)
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kill_LDADD = $(LDADD)
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kill_DEPENDENCIES = libtests.a
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+kill_child_SOURCES = kill_child.c
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+kill_child_OBJECTS = kill_child.$(OBJEXT)
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+kill_child_LDADD = $(LDADD)
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+kill_child_DEPENDENCIES = libtests.a
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ksysent_SOURCES = ksysent.c
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ksysent_OBJECTS = ksysent.$(OBJEXT)
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ksysent_LDADD = $(LDADD)
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@@ -2741,9 +2746,9 @@
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ipc_shm.c ipc_shm-Xabbrev.c ipc_shm-Xraw.c ipc_shm-Xverbose.c \
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is_linux_mips_n64.c kcmp.c kcmp-y.c kern_features.c \
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kexec_file_load.c kexec_load.c keyctl.c keyctl-Xabbrev.c \
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- keyctl-Xraw.c keyctl-Xverbose.c kill.c ksysent.c lchown.c \
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- lchown32.c link.c linkat.c list_sigaction_signum.c llseek.c \
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- localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
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+ keyctl-Xraw.c keyctl-Xverbose.c kill.c kill_child.c ksysent.c \
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+ lchown.c lchown32.c link.c linkat.c list_sigaction_signum.c \
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+ llseek.c localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
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madvise.c mbind.c membarrier.c memfd_create.c migrate_pages.c \
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mincore.c mkdir.c mkdirat.c mknod.c mknodat.c mlock.c mlock2.c \
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mlockall.c mmap.c mmap-Xabbrev.c mmap-Xraw.c mmap-Xverbose.c \
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@@ -2886,9 +2891,9 @@
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ipc_shm.c ipc_shm-Xabbrev.c ipc_shm-Xraw.c ipc_shm-Xverbose.c \
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is_linux_mips_n64.c kcmp.c kcmp-y.c kern_features.c \
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kexec_file_load.c kexec_load.c keyctl.c keyctl-Xabbrev.c \
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- keyctl-Xraw.c keyctl-Xverbose.c kill.c ksysent.c lchown.c \
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- lchown32.c link.c linkat.c list_sigaction_signum.c llseek.c \
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- localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
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+ keyctl-Xraw.c keyctl-Xverbose.c kill.c kill_child.c ksysent.c \
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+ lchown.c lchown32.c link.c linkat.c list_sigaction_signum.c \
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+ llseek.c localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
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madvise.c mbind.c membarrier.c memfd_create.c migrate_pages.c \
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mincore.c mkdir.c mkdirat.c mknod.c mknodat.c mlock.c mlock2.c \
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mlockall.c mmap.c mmap-Xabbrev.c mmap-Xraw.c mmap-Xverbose.c \
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@@ -4227,6 +4232,7 @@
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get_regs.test \
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inject-nf.test \
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interactive_block.test \
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+ kill_child.test \
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ksysent.test \
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localtime.test \
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opipe.test \
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4d44fe |
@@ -5190,6 +5196,10 @@
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@rm -f kill$(EXEEXT)
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$(AM_V_CCLD)$(LINK) $(kill_OBJECTS) $(kill_LDADD) $(LIBS)
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+kill_child$(EXEEXT): $(kill_child_OBJECTS) $(kill_child_DEPENDENCIES) $(EXTRA_kill_child_DEPENDENCIES)
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+ @rm -f kill_child$(EXEEXT)
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+ $(AM_V_CCLD)$(LINK) $(kill_child_OBJECTS) $(kill_child_LDADD) $(LIBS)
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+
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ksysent$(EXEEXT): $(ksysent_OBJECTS) $(ksysent_DEPENDENCIES) $(EXTRA_ksysent_DEPENDENCIES)
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4d44fe |
@rm -f ksysent$(EXEEXT)
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4d44fe |
$(AM_V_CCLD)$(LINK) $(ksysent_OBJECTS) $(ksysent_LDADD) $(LIBS)
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4d44fe |
@@ -6855,6 +6865,7 @@
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4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/keyctl-Xverbose.Po@am__quote@
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4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/keyctl.Po@am__quote@
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4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kill.Po@am__quote@
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4d44fe |
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kill_child.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ksysent.Po@am__quote@
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4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lchown.Po@am__quote@
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4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lchown32.Po@am__quote@
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4d44fe |
Index: strace-4.24/tests-m32/Makefile.in
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4d44fe |
===================================================================
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4d44fe |
--- strace-4.24.orig/tests-m32/Makefile.in 2018-08-14 02:44:38.000000000 +0200
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4d44fe |
+++ strace-4.24/tests-m32/Makefile.in 2019-03-10 05:44:56.112091757 +0100
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4d44fe |
@@ -153,8 +153,9 @@
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4d44fe |
ioctl_evdev-v$(EXEEXT) ioctl_loop-nv$(EXEEXT) \
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|
4d44fe |
ioctl_loop-v$(EXEEXT) ioctl_nsfs$(EXEEXT) \
|
|
|
4d44fe |
ioctl_perf-success$(EXEEXT) ioctl_rtc-v$(EXEEXT) \
|
|
|
4d44fe |
- is_linux_mips_n64$(EXEEXT) ksysent$(EXEEXT) \
|
|
|
4d44fe |
- list_sigaction_signum$(EXEEXT) localtime$(EXEEXT) \
|
|
|
4d44fe |
+ is_linux_mips_n64$(EXEEXT) kill_child$(EXEEXT) \
|
|
|
4d44fe |
+ ksysent$(EXEEXT) list_sigaction_signum$(EXEEXT) \
|
|
|
4d44fe |
+ localtime$(EXEEXT) \
|
|
|
4d44fe |
mmsg-silent$(EXEEXT) mmsg_name-v$(EXEEXT) \
|
|
|
4d44fe |
msg_control-v$(EXEEXT) net-accept-connect$(EXEEXT) \
|
|
|
4d44fe |
net-tpacket_stats-success$(EXEEXT) netlink_inet_diag$(EXEEXT) \
|
|
|
4d44fe |
@@ -1186,6 +1187,10 @@
|
|
|
4d44fe |
kill_OBJECTS = kill.$(OBJEXT)
|
|
|
4d44fe |
kill_LDADD = $(LDADD)
|
|
|
4d44fe |
kill_DEPENDENCIES = libtests.a
|
|
|
4d44fe |
+kill_child_SOURCES = kill_child.c
|
|
|
4d44fe |
+kill_child_OBJECTS = kill_child.$(OBJEXT)
|
|
|
4d44fe |
+kill_child_LDADD = $(LDADD)
|
|
|
4d44fe |
+kill_child_DEPENDENCIES = libtests.a
|
|
|
4d44fe |
ksysent_SOURCES = ksysent.c
|
|
|
4d44fe |
ksysent_OBJECTS = ksysent.$(OBJEXT)
|
|
|
4d44fe |
ksysent_LDADD = $(LDADD)
|
|
|
4d44fe |
@@ -2741,9 +2746,9 @@
|
|
|
4d44fe |
ipc_shm.c ipc_shm-Xabbrev.c ipc_shm-Xraw.c ipc_shm-Xverbose.c \
|
|
|
4d44fe |
is_linux_mips_n64.c kcmp.c kcmp-y.c kern_features.c \
|
|
|
4d44fe |
kexec_file_load.c kexec_load.c keyctl.c keyctl-Xabbrev.c \
|
|
|
4d44fe |
- keyctl-Xraw.c keyctl-Xverbose.c kill.c ksysent.c lchown.c \
|
|
|
4d44fe |
- lchown32.c link.c linkat.c list_sigaction_signum.c llseek.c \
|
|
|
4d44fe |
- localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
|
|
|
4d44fe |
+ keyctl-Xraw.c keyctl-Xverbose.c kill.c kill_child.c ksysent.c \
|
|
|
4d44fe |
+ lchown.c lchown32.c link.c linkat.c list_sigaction_signum.c \
|
|
|
4d44fe |
+ llseek.c localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
|
|
|
4d44fe |
madvise.c mbind.c membarrier.c memfd_create.c migrate_pages.c \
|
|
|
4d44fe |
mincore.c mkdir.c mkdirat.c mknod.c mknodat.c mlock.c mlock2.c \
|
|
|
4d44fe |
mlockall.c mmap.c mmap-Xabbrev.c mmap-Xraw.c mmap-Xverbose.c \
|
|
|
4d44fe |
@@ -2886,9 +2891,9 @@
|
|
|
4d44fe |
ipc_shm.c ipc_shm-Xabbrev.c ipc_shm-Xraw.c ipc_shm-Xverbose.c \
|
|
|
4d44fe |
is_linux_mips_n64.c kcmp.c kcmp-y.c kern_features.c \
|
|
|
4d44fe |
kexec_file_load.c kexec_load.c keyctl.c keyctl-Xabbrev.c \
|
|
|
4d44fe |
- keyctl-Xraw.c keyctl-Xverbose.c kill.c ksysent.c lchown.c \
|
|
|
4d44fe |
- lchown32.c link.c linkat.c list_sigaction_signum.c llseek.c \
|
|
|
4d44fe |
- localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
|
|
|
4d44fe |
+ keyctl-Xraw.c keyctl-Xverbose.c kill.c kill_child.c ksysent.c \
|
|
|
4d44fe |
+ lchown.c lchown32.c link.c linkat.c list_sigaction_signum.c \
|
|
|
4d44fe |
+ llseek.c localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
|
|
|
4d44fe |
madvise.c mbind.c membarrier.c memfd_create.c migrate_pages.c \
|
|
|
4d44fe |
mincore.c mkdir.c mkdirat.c mknod.c mknodat.c mlock.c mlock2.c \
|
|
|
4d44fe |
mlockall.c mmap.c mmap-Xabbrev.c mmap-Xraw.c mmap-Xverbose.c \
|
|
|
4d44fe |
@@ -4227,6 +4232,7 @@
|
|
|
4d44fe |
get_regs.test \
|
|
|
4d44fe |
inject-nf.test \
|
|
|
4d44fe |
interactive_block.test \
|
|
|
4d44fe |
+ kill_child.test \
|
|
|
4d44fe |
ksysent.test \
|
|
|
4d44fe |
localtime.test \
|
|
|
4d44fe |
opipe.test \
|
|
|
4d44fe |
@@ -5190,6 +5196,10 @@
|
|
|
4d44fe |
@rm -f kill$(EXEEXT)
|
|
|
4d44fe |
$(AM_V_CCLD)$(LINK) $(kill_OBJECTS) $(kill_LDADD) $(LIBS)
|
|
|
4d44fe |
|
|
|
4d44fe |
+kill_child$(EXEEXT): $(kill_child_OBJECTS) $(kill_child_DEPENDENCIES) $(EXTRA_kill_child_DEPENDENCIES)
|
|
|
4d44fe |
+ @rm -f kill_child$(EXEEXT)
|
|
|
4d44fe |
+ $(AM_V_CCLD)$(LINK) $(kill_child_OBJECTS) $(kill_child_LDADD) $(LIBS)
|
|
|
4d44fe |
+
|
|
|
4d44fe |
ksysent$(EXEEXT): $(ksysent_OBJECTS) $(ksysent_DEPENDENCIES) $(EXTRA_ksysent_DEPENDENCIES)
|
|
|
4d44fe |
@rm -f ksysent$(EXEEXT)
|
|
|
4d44fe |
$(AM_V_CCLD)$(LINK) $(ksysent_OBJECTS) $(ksysent_LDADD) $(LIBS)
|
|
|
4d44fe |
@@ -6855,6 +6865,7 @@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/keyctl-Xverbose.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/keyctl.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kill.Po@am__quote@
|
|
|
4d44fe |
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kill_child.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ksysent.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lchown.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lchown32.Po@am__quote@
|
|
|
4d44fe |
Index: strace-4.24/tests-m32/kill_child.c
|
|
|
4d44fe |
===================================================================
|
|
|
4d44fe |
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
|
|
4d44fe |
+++ strace-4.24/tests-m32/kill_child.c 2019-03-10 05:41:09.454361435 +0100
|
|
|
4d44fe |
@@ -0,0 +1,69 @@
|
|
|
4d44fe |
+/*
|
|
|
4d44fe |
+ * Check for the corner case that previously lead to segfault
|
|
|
4d44fe |
+ * due to an attempt to access unitialised tcp->s_ent.
|
|
|
4d44fe |
+ *
|
|
|
4d44fe |
+ * 13994 ????( <unfinished ...>
|
|
|
4d44fe |
+ * ...
|
|
|
4d44fe |
+ * 13994 <... ???? resumed>) = ?
|
|
|
4d44fe |
+ *
|
|
|
4d44fe |
+ * Copyright (c) 2019 The strace developers.
|
|
|
4d44fe |
+ * All rights reserved.
|
|
|
4d44fe |
+ *
|
|
|
4d44fe |
+ * SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
4d44fe |
+ */
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+#include "tests.h"
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+#include <sched.h>
|
|
|
4d44fe |
+#include <signal.h>
|
|
|
4d44fe |
+#include <unistd.h>
|
|
|
4d44fe |
+#include <sys/mman.h>
|
|
|
4d44fe |
+#include <sys/wait.h>
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+#define ITERS 10000
|
|
|
4d44fe |
+#define SC_ITERS 10000
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+int
|
|
|
4d44fe |
+main(void)
|
|
|
4d44fe |
+{
|
|
|
4d44fe |
+ volatile sig_atomic_t *const mem =
|
|
|
4d44fe |
+ mmap(NULL, get_page_size(), PROT_READ | PROT_WRITE,
|
|
|
4d44fe |
+ MAP_SHARED | MAP_ANONYMOUS, -1, 0);
|
|
|
4d44fe |
+ if (mem == MAP_FAILED)
|
|
|
4d44fe |
+ perror_msg_and_fail("mmap");
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ for (unsigned int i = 0; i < ITERS; ++i) {
|
|
|
4d44fe |
+ mem[0] = mem[1] = 0;
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ const pid_t pid = fork();
|
|
|
4d44fe |
+ if (pid < 0)
|
|
|
4d44fe |
+ perror_msg_and_fail("fork");
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ if (!pid) {
|
|
|
4d44fe |
+ /* wait for the parent */
|
|
|
4d44fe |
+ while (!mem[0])
|
|
|
4d44fe |
+ ;
|
|
|
4d44fe |
+ /* let the parent know we are running */
|
|
|
4d44fe |
+ mem[1] = 1;
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ for (unsigned int j = 0; j < SC_ITERS; j++)
|
|
|
4d44fe |
+ sched_yield();
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ pause();
|
|
|
4d44fe |
+ return 0;
|
|
|
4d44fe |
+ }
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ /* let the child know we are running */
|
|
|
4d44fe |
+ mem[0] = 1;
|
|
|
4d44fe |
+ /* wait for the child */
|
|
|
4d44fe |
+ while (!mem[1])
|
|
|
4d44fe |
+ ;
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ if (kill(pid, SIGKILL))
|
|
|
4d44fe |
+ perror_msg_and_fail("kill");
|
|
|
4d44fe |
+ if (wait(NULL) != pid)
|
|
|
4d44fe |
+ perror_msg_and_fail("wait");
|
|
|
4d44fe |
+ }
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ return 0;
|
|
|
4d44fe |
+}
|
|
|
4d44fe |
Index: strace-4.24/tests-m32/kill_child.test
|
|
|
4d44fe |
===================================================================
|
|
|
4d44fe |
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
|
|
4d44fe |
+++ strace-4.24/tests-m32/kill_child.test 2019-03-10 05:41:25.066205103 +0100
|
|
|
4d44fe |
@@ -0,0 +1,31 @@
|
|
|
4d44fe |
+#!/bin/sh
|
|
|
4d44fe |
+#
|
|
|
4d44fe |
+# Check whether repeated killing of just forked processes crashes strace.
|
|
|
4d44fe |
+#
|
|
|
4d44fe |
+# Copyright (c) 2019 The strace developers.
|
|
|
4d44fe |
+# All rights reserved.
|
|
|
4d44fe |
+#
|
|
|
4d44fe |
+# SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+. "${srcdir=.}/init.sh"
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+run_prog_skip_if_failed date +%s > /dev/null
|
|
|
4d44fe |
+s0="$(date +%s)"
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+run_prog
|
|
|
4d44fe |
+args="-f -qq -e signal=none -e trace=sched_yield,/kill $args"
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+# Run strace until the known corner case is observed.
|
|
|
4d44fe |
+while :; do
|
|
|
4d44fe |
+ run_strace $args
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ # Printing of "<... SYSCALL resumed>" in strace.c:print_event_exit
|
|
|
4d44fe |
+ # used to segfault when the syscall number had not been obtained
|
|
|
4d44fe |
+ # on syscall entering.
|
|
|
4d44fe |
+ grep -q '^[1-9][0-9]* <\.\.\. ???? resumed>) \+= ?$' "$LOG" && exit 0
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ s1="$(date +%s)"
|
|
|
4d44fe |
+ if [ "$(($s1-$s0))" -gt "$(($TIMEOUT_DURATION/2))" ]; then
|
|
|
4d44fe |
+ skip_ 'Unable to reproduce <... ???? resumed>'
|
|
|
4d44fe |
+ fi
|
|
|
4d44fe |
+done
|
|
|
4d44fe |
Index: strace-4.24/tests-mx32/kill_child.c
|
|
|
4d44fe |
===================================================================
|
|
|
4d44fe |
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
|
|
4d44fe |
+++ strace-4.24/tests-mx32/kill_child.c 2019-03-10 05:41:12.566330273 +0100
|
|
|
4d44fe |
@@ -0,0 +1,69 @@
|
|
|
4d44fe |
+/*
|
|
|
4d44fe |
+ * Check for the corner case that previously lead to segfault
|
|
|
4d44fe |
+ * due to an attempt to access unitialised tcp->s_ent.
|
|
|
4d44fe |
+ *
|
|
|
4d44fe |
+ * 13994 ????( <unfinished ...>
|
|
|
4d44fe |
+ * ...
|
|
|
4d44fe |
+ * 13994 <... ???? resumed>) = ?
|
|
|
4d44fe |
+ *
|
|
|
4d44fe |
+ * Copyright (c) 2019 The strace developers.
|
|
|
4d44fe |
+ * All rights reserved.
|
|
|
4d44fe |
+ *
|
|
|
4d44fe |
+ * SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
4d44fe |
+ */
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+#include "tests.h"
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+#include <sched.h>
|
|
|
4d44fe |
+#include <signal.h>
|
|
|
4d44fe |
+#include <unistd.h>
|
|
|
4d44fe |
+#include <sys/mman.h>
|
|
|
4d44fe |
+#include <sys/wait.h>
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+#define ITERS 10000
|
|
|
4d44fe |
+#define SC_ITERS 10000
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+int
|
|
|
4d44fe |
+main(void)
|
|
|
4d44fe |
+{
|
|
|
4d44fe |
+ volatile sig_atomic_t *const mem =
|
|
|
4d44fe |
+ mmap(NULL, get_page_size(), PROT_READ | PROT_WRITE,
|
|
|
4d44fe |
+ MAP_SHARED | MAP_ANONYMOUS, -1, 0);
|
|
|
4d44fe |
+ if (mem == MAP_FAILED)
|
|
|
4d44fe |
+ perror_msg_and_fail("mmap");
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ for (unsigned int i = 0; i < ITERS; ++i) {
|
|
|
4d44fe |
+ mem[0] = mem[1] = 0;
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ const pid_t pid = fork();
|
|
|
4d44fe |
+ if (pid < 0)
|
|
|
4d44fe |
+ perror_msg_and_fail("fork");
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ if (!pid) {
|
|
|
4d44fe |
+ /* wait for the parent */
|
|
|
4d44fe |
+ while (!mem[0])
|
|
|
4d44fe |
+ ;
|
|
|
4d44fe |
+ /* let the parent know we are running */
|
|
|
4d44fe |
+ mem[1] = 1;
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ for (unsigned int j = 0; j < SC_ITERS; j++)
|
|
|
4d44fe |
+ sched_yield();
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ pause();
|
|
|
4d44fe |
+ return 0;
|
|
|
4d44fe |
+ }
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ /* let the child know we are running */
|
|
|
4d44fe |
+ mem[0] = 1;
|
|
|
4d44fe |
+ /* wait for the child */
|
|
|
4d44fe |
+ while (!mem[1])
|
|
|
4d44fe |
+ ;
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ if (kill(pid, SIGKILL))
|
|
|
4d44fe |
+ perror_msg_and_fail("kill");
|
|
|
4d44fe |
+ if (wait(NULL) != pid)
|
|
|
4d44fe |
+ perror_msg_and_fail("wait");
|
|
|
4d44fe |
+ }
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ return 0;
|
|
|
4d44fe |
+}
|
|
|
4d44fe |
Index: strace-4.24/tests-mx32/kill_child.test
|
|
|
4d44fe |
===================================================================
|
|
|
4d44fe |
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
|
|
4d44fe |
+++ strace-4.24/tests-mx32/kill_child.test 2019-03-10 05:41:27.802177706 +0100
|
|
|
4d44fe |
@@ -0,0 +1,31 @@
|
|
|
4d44fe |
+#!/bin/sh
|
|
|
4d44fe |
+#
|
|
|
4d44fe |
+# Check whether repeated killing of just forked processes crashes strace.
|
|
|
4d44fe |
+#
|
|
|
4d44fe |
+# Copyright (c) 2019 The strace developers.
|
|
|
4d44fe |
+# All rights reserved.
|
|
|
4d44fe |
+#
|
|
|
4d44fe |
+# SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+. "${srcdir=.}/init.sh"
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+run_prog_skip_if_failed date +%s > /dev/null
|
|
|
4d44fe |
+s0="$(date +%s)"
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+run_prog
|
|
|
4d44fe |
+args="-f -qq -e signal=none -e trace=sched_yield,/kill $args"
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+# Run strace until the known corner case is observed.
|
|
|
4d44fe |
+while :; do
|
|
|
4d44fe |
+ run_strace $args
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ # Printing of "<... SYSCALL resumed>" in strace.c:print_event_exit
|
|
|
4d44fe |
+ # used to segfault when the syscall number had not been obtained
|
|
|
4d44fe |
+ # on syscall entering.
|
|
|
4d44fe |
+ grep -q '^[1-9][0-9]* <\.\.\. ???? resumed>) \+= ?$' "$LOG" && exit 0
|
|
|
4d44fe |
+
|
|
|
4d44fe |
+ s1="$(date +%s)"
|
|
|
4d44fe |
+ if [ "$(($s1-$s0))" -gt "$(($TIMEOUT_DURATION/2))" ]; then
|
|
|
4d44fe |
+ skip_ 'Unable to reproduce <... ???? resumed>'
|
|
|
4d44fe |
+ fi
|
|
|
4d44fe |
+done
|
|
|
4d44fe |
Index: strace-4.24/tests-mx32/Makefile.in
|
|
|
4d44fe |
===================================================================
|
|
|
4d44fe |
--- strace-4.24.orig/tests-mx32/Makefile.in 2018-08-14 02:44:38.000000000 +0200
|
|
|
4d44fe |
+++ strace-4.24/tests-mx32/Makefile.in 2019-03-10 05:45:49.892553217 +0100
|
|
|
4d44fe |
@@ -153,8 +153,9 @@
|
|
|
4d44fe |
ioctl_evdev-v$(EXEEXT) ioctl_loop-nv$(EXEEXT) \
|
|
|
4d44fe |
ioctl_loop-v$(EXEEXT) ioctl_nsfs$(EXEEXT) \
|
|
|
4d44fe |
ioctl_perf-success$(EXEEXT) ioctl_rtc-v$(EXEEXT) \
|
|
|
4d44fe |
- is_linux_mips_n64$(EXEEXT) ksysent$(EXEEXT) \
|
|
|
4d44fe |
- list_sigaction_signum$(EXEEXT) localtime$(EXEEXT) \
|
|
|
4d44fe |
+ is_linux_mips_n64$(EXEEXT) kill_child$(EXEEXT) \
|
|
|
4d44fe |
+ ksysent$(EXEEXT) list_sigaction_signum$(EXEEXT) \
|
|
|
4d44fe |
+ localtime$(EXEEXT) \
|
|
|
4d44fe |
mmsg-silent$(EXEEXT) mmsg_name-v$(EXEEXT) \
|
|
|
4d44fe |
msg_control-v$(EXEEXT) net-accept-connect$(EXEEXT) \
|
|
|
4d44fe |
net-tpacket_stats-success$(EXEEXT) netlink_inet_diag$(EXEEXT) \
|
|
|
4d44fe |
@@ -1186,6 +1187,10 @@
|
|
|
4d44fe |
kill_OBJECTS = kill.$(OBJEXT)
|
|
|
4d44fe |
kill_LDADD = $(LDADD)
|
|
|
4d44fe |
kill_DEPENDENCIES = libtests.a
|
|
|
4d44fe |
+kill_child_SOURCES = kill_child.c
|
|
|
4d44fe |
+kill_child_OBJECTS = kill_child.$(OBJEXT)
|
|
|
4d44fe |
+kill_child_LDADD = $(LDADD)
|
|
|
4d44fe |
+kill_child_DEPENDENCIES = libtests.a
|
|
|
4d44fe |
ksysent_SOURCES = ksysent.c
|
|
|
4d44fe |
ksysent_OBJECTS = ksysent.$(OBJEXT)
|
|
|
4d44fe |
ksysent_LDADD = $(LDADD)
|
|
|
4d44fe |
@@ -2741,9 +2746,9 @@
|
|
|
4d44fe |
ipc_shm.c ipc_shm-Xabbrev.c ipc_shm-Xraw.c ipc_shm-Xverbose.c \
|
|
|
4d44fe |
is_linux_mips_n64.c kcmp.c kcmp-y.c kern_features.c \
|
|
|
4d44fe |
kexec_file_load.c kexec_load.c keyctl.c keyctl-Xabbrev.c \
|
|
|
4d44fe |
- keyctl-Xraw.c keyctl-Xverbose.c kill.c ksysent.c lchown.c \
|
|
|
4d44fe |
- lchown32.c link.c linkat.c list_sigaction_signum.c llseek.c \
|
|
|
4d44fe |
- localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
|
|
|
4d44fe |
+ keyctl-Xraw.c keyctl-Xverbose.c kill.c kill_child.c ksysent.c \
|
|
|
4d44fe |
+ lchown.c lchown32.c link.c linkat.c list_sigaction_signum.c \
|
|
|
4d44fe |
+ llseek.c localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
|
|
|
4d44fe |
madvise.c mbind.c membarrier.c memfd_create.c migrate_pages.c \
|
|
|
4d44fe |
mincore.c mkdir.c mkdirat.c mknod.c mknodat.c mlock.c mlock2.c \
|
|
|
4d44fe |
mlockall.c mmap.c mmap-Xabbrev.c mmap-Xraw.c mmap-Xverbose.c \
|
|
|
4d44fe |
@@ -2886,9 +2891,9 @@
|
|
|
4d44fe |
ipc_shm.c ipc_shm-Xabbrev.c ipc_shm-Xraw.c ipc_shm-Xverbose.c \
|
|
|
4d44fe |
is_linux_mips_n64.c kcmp.c kcmp-y.c kern_features.c \
|
|
|
4d44fe |
kexec_file_load.c kexec_load.c keyctl.c keyctl-Xabbrev.c \
|
|
|
4d44fe |
- keyctl-Xraw.c keyctl-Xverbose.c kill.c ksysent.c lchown.c \
|
|
|
4d44fe |
- lchown32.c link.c linkat.c list_sigaction_signum.c llseek.c \
|
|
|
4d44fe |
- localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
|
|
|
4d44fe |
+ keyctl-Xraw.c keyctl-Xverbose.c kill.c kill_child.c ksysent.c \
|
|
|
4d44fe |
+ lchown.c lchown32.c link.c linkat.c list_sigaction_signum.c \
|
|
|
4d44fe |
+ llseek.c localtime.c lookup_dcookie.c lseek.c lstat.c lstat64.c \
|
|
|
4d44fe |
madvise.c mbind.c membarrier.c memfd_create.c migrate_pages.c \
|
|
|
4d44fe |
mincore.c mkdir.c mkdirat.c mknod.c mknodat.c mlock.c mlock2.c \
|
|
|
4d44fe |
mlockall.c mmap.c mmap-Xabbrev.c mmap-Xraw.c mmap-Xverbose.c \
|
|
|
4d44fe |
@@ -4227,6 +4232,7 @@
|
|
|
4d44fe |
get_regs.test \
|
|
|
4d44fe |
inject-nf.test \
|
|
|
4d44fe |
interactive_block.test \
|
|
|
4d44fe |
+ kill_child.test \
|
|
|
4d44fe |
ksysent.test \
|
|
|
4d44fe |
localtime.test \
|
|
|
4d44fe |
opipe.test \
|
|
|
4d44fe |
@@ -5190,6 +5196,10 @@
|
|
|
4d44fe |
@rm -f kill$(EXEEXT)
|
|
|
4d44fe |
$(AM_V_CCLD)$(LINK) $(kill_OBJECTS) $(kill_LDADD) $(LIBS)
|
|
|
4d44fe |
|
|
|
4d44fe |
+kill_child$(EXEEXT): $(kill_child_OBJECTS) $(kill_child_DEPENDENCIES) $(EXTRA_kill_child_DEPENDENCIES)
|
|
|
4d44fe |
+ @rm -f kill_child$(EXEEXT)
|
|
|
4d44fe |
+ $(AM_V_CCLD)$(LINK) $(kill_child_OBJECTS) $(kill_child_LDADD) $(LIBS)
|
|
|
4d44fe |
+
|
|
|
4d44fe |
ksysent$(EXEEXT): $(ksysent_OBJECTS) $(ksysent_DEPENDENCIES) $(EXTRA_ksysent_DEPENDENCIES)
|
|
|
4d44fe |
@rm -f ksysent$(EXEEXT)
|
|
|
4d44fe |
$(AM_V_CCLD)$(LINK) $(ksysent_OBJECTS) $(ksysent_LDADD) $(LIBS)
|
|
|
4d44fe |
@@ -6855,6 +6865,7 @@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/keyctl-Xverbose.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/keyctl.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kill.Po@am__quote@
|
|
|
4d44fe |
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kill_child.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ksysent.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lchown.Po@am__quote@
|
|
|
4d44fe |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lchown32.Po@am__quote@
|