Attachment 682368 Details for Bug 877110 – Crash reproducer

Crash reproducer

demo.c (text/plain), 2.25 KB, created by Daniel Berrangé on 2013-01-18 11:54:27 UTC

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Creator: Daniel Berrangé

Created: 2013-01-18 11:54:27 UTC

Size: 2.25 KB

patch

obsolete

>#include <libvirt/libvirt.h>
>#include <libvirt/virterror.h>
>#include <stdio.h>
>#include <pthread.h>
>#include <string.h>
>#include <unistd.h>
>#include <stdlib.h>
>#include <sys/syscall.h>
>
>#define NUM_THREADS 8
>
>const char *XML = "<domain type='kvm'>"
>"  <name>XXXXXXXX</name>"
>"  <memory unit='KiB'>220160</memory>"
>"  <currentMemory unit='KiB'>60000</currentMemory>"
>"  <vcpu placement='static'>1</vcpu>"
>"  <os>"
>"    <type arch='x86_64'>hvm</type>"
>"    <boot dev='hd'/>"
>"  </os>"
>"  <features>"
>"    <acpi/>"
>"  </features>"
>"  <devices>"
>"    <emulator>/bin/qemu-kvm</emulator>"
>"    <disk type='file' device='disk'>"
>"      <driver name='qemu' type='qcow2'/>"
>"      <source file='/home/berrange/VirtualMachines/plain.qcow'/>"
>"      <target dev='vda' bus='virtio'/>"
>"      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>"
>"      <shareable/>"
>"    </disk>"
>"    <console type='pty'>"
>"      <target type='serial' port='0'/>"
>"    </console>"
>"    <input type='mouse' bus='ps2'/>"
>"    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'/>"
>"  </devices>"
>"</domain>";
>
>
>static pid_t gettid(void)
>{
>  return syscall(SYS_gettid);
>}
>
>static void *one_thread(void *arg)
>{
>  int i;
>  virConnectPtr conn = arg;
>  virConnectRef(conn);
>
>  for (i = 0 ; i < 10 ; i++) {
>    char *xml = strdup(XML);
>
>    if (!xml)
>      goto cleanup;
>
>    char *tmp = strstr(xml, "XXXX");
>    snprintf(tmp, 9, "vm%06d", gettid());
>    tmp[8] = '<';
>    fprintf(stderr, "%d: %d\n", gettid(), i);
>    virDomainPtr dom = virDomainCreateXML(conn, xml, 0);
>
>    virDomainDestroy(dom);
>
>    free(xml);
>  }
>
> cleanup:
>  virConnectClose(conn);
>  return NULL;
>}
>
>int main(int argc, char **argv) {
>  virConnectPtr conn;
>  int ret = -1;
>  pthread_t threads[NUM_THREADS];
>  int i;
>
>  if (!(conn = virConnectOpen("qemu:///session")))
>    goto error;
>
>  for (i = 0 ; i < NUM_THREADS ; i++) {
>    if (pthread_create(&threads[i], NULL,
>		       one_thread, conn) < 0)
>      goto error;
>  }
>
>  for (i = 0 ; i < NUM_THREADS ; i++) {
>    if (pthread_join(threads[i], NULL) < 0)
>      goto error;
>  }
>
>  ret = 0;
> error:
>  if (ret != 0) {
>    virErrorPtr err = virGetLastError();
>    fprintf(stderr, "error: %s\n", err ? err->message : "<unknown>");
>  }
>  if (conn)
>    virConnectClose(conn);
>  exit(ret);
>}

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Attachments on bug 877110: 682368