Console/channel devices have their pty devices assigned when the emulator is actually started. If time is spent in guest preparation, someone attempts to open the console/channel, the libvirt crashes in virChrdevLockFilePath(). The patch attempts to fix the crash by adding a check before attempting to open. Signed-off-by: Shivaprasad G Bhat <sbhat(a)linux.vnet.ibm.com&gt; --- src/conf/virchrdev.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/conf/virchrdev.c b/src/conf/virchrdev.c index 5f28f29..701b326 100644 --- a/src/conf/virchrdev.c +++ b/src/conf/virchrdev.c @@ -350,6 +350,11 @@ int virChrdevOpen(virChrdevsPtr devs, switch (source->type) { case VIR_DOMAIN_CHR_TYPE_PTY: path = source->data.file.path; + if (!path) { + virReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("PTY device is not yet assigned")); + return -1; + } break; case VIR_DOMAIN_CHR_TYPE_UNIX: path = source->data.nix.path;