#!/bin/sh # # Copyright (c) 2013 EMC Corp. # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # Regression test for r246484. # "panic: failed to set signal flags for ast p ... fl 4" seen. # Fixed in r302999. . ../default.cfg cd /tmp cat > vfork1.c <<- EOF #include <err.h> #include <stdio.h> #include <unistd.h> int main(void) { pid_t pid; fprintf(stderr, "%d\n", getpid()); if ((pid = vfork()) == 0) { #if 0 if (ptrace(PT_TRACE_ME, 0, 0, 0) == -1) err(1, "PT_TRACEME"); #endif sleep(30); _exit(0); } if (pid == -1) err(1, "vfork"); return (0); } EOF mycc -o vfork1 -Wall -Wextra -g vfork1.c rm vfork1.c cat > vfork2.c <<- EOF #include <sys/types.h> #include <err.h> #include <errno.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <strings.h> #include <sys/ptrace.h> #include <sys/resource.h> #include <sys/time.h> #include <sys/wait.h> #include <unistd.h> int main(int argc, char **argv) { pid_t pid, rpid; struct rusage ru; int status; if (argc != 2) errx(1, "Usage: %s <pid>", argv[0]); pid = atoi(argv[1]); if (pid == -1) err(1, "fork()"); if (ptrace(PT_ATTACH, pid, NULL, 0) == -1) err(1, "ptrace(%d) attach", pid); if (wait(NULL) == -1) err(1, "wait"); bzero(&ru, sizeof(ru)); usleep(2000); if ((rpid = wait4(-1, &status, WNOHANG, &ru)) == -1) { err(0, "OK wait4"); } if (rpid == 0) { // fprintf(stderr, "No rusage info.\n"); if (ptrace(PT_DETACH, pid, NULL, 0) == -1) err(1, "ptrace(%d) detach", pid); if (wait(&status) == -1) err(1, "wait"); } else { fprintf(stderr, "FAIL Got unexpected rusage.\n"); if (ru.ru_utime.tv_sec != 0) fprintf(stderr, "FAIL tv_sec\n"); } if (status != 0x4000) fprintf(stderr, "FAIL Child exit status 0x%x\n", status); return (0); } EOF mycc -o vfork2 -Wall -Wextra -g vfork2.c rm vfork2.c ./vfork1 & sleep .2 childpid=`ps -lx | grep -v grep | grep vfork1 | tail -1 | grep nanslp | awk '{print $2}'` # Seen before fix: # failed to set signal flags properly for ast() ./vfork2 $childpid s=$? rm -f vfork1 vfork2 exit $s