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Marc Hartmayer
cb09344a2c
Don't process subchannel devices where `def->driver` is not set. This
fixes the following segfault:
Thread 21 "nodedev-init" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x3ffb08fc910 (LWP 64303)]
(gdb) bt
#0 0x000003fffd1272b4 in __strcmp_vx () at /lib64/libc.so.6
#1 0x000003ffc260c3a8 in udevProcessCSS (device=0x3ff9018d130, def=0x3ff90194a90)
#2 0x000003ffc260cb78 in udevGetDeviceDetails (device=0x3ff9018d130, def=0x3ff90194a90)
#3 0x000003ffc260d126 in udevAddOneDevice (device=0x3ff9018d130)
#4 0x000003ffc260d414 in udevProcessDeviceListEntry (udev=0x3ffa810d800, list_entry=0x3ff90001990)
#5 0x000003ffc260d638 in udevEnumerateDevices (udev=0x3ffa810d800)
#6 0x000003ffc260e08e in nodeStateInitializeEnumerate (opaque=0x3ffa810d800)
#7 0x000003fffdaa14b6 in virThreadHelper (data=0x3ffa810df00)
#8 0x000003fffc309ed6 in start_thread ()
#9 0x000003fffd185e66 in thread_start ()
(gdb) p *def
$2 = {
name = 0x0,
sysfs_path = 0x3ff90198e80 "/sys/devices/css0/0.0.ff40",
parent = 0x0,
parent_sysfs_path = 0x0,
parent_wwnn = 0x0,
parent_wwpn = 0x0,
parent_fabric_wwn = 0x0,
driver = 0x0,
devnode = 0x0,
devlinks = 0x3ff90194670,
caps = 0x3ff90194380
}
Fixes: 05e6cdafa6 ("node_device: detect CSS devices")
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
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==============================
Libvirt API for virtualization
==============================
Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
For some of these hypervisors, it provides a stateful management
daemon which runs on the virtualization host allowing access to the
API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other
languages including Python, Perl, PHP, Go, Java, OCaml, as well as
mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the
website:
https://libvirt.org
License
=======
The libvirt C API is distributed under the terms of GNU Lesser General
Public License, version 2.1 (or later). Some parts of the code that are
not part of the C library may have the more restrictive GNU General
Public License, version 2.0 (or later). See the files ``COPYING.LESSER``
and ``COPYING`` for full license terms & conditions.
Installation
============
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
============
The libvirt project welcomes contributions in many ways. For most components
the best way to contribute is to send patches to the primary development
mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
=======
The libvirt project has two primary mailing lists:
* libvirt-users@redhat.com (**for user discussions**)
* libvir-list@redhat.com (**for development only**)
Further details on contacting the project are available on the website:
https://libvirt.org/contact.html