Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Description of problem:
Segmentation fault when LXC guest enter namespace, not sure the libvirt will fix this, it seems this is a python component bug not libvirt, so please move it to python component if needs.
Version-Release number of selected component (if applicable):
# rpm -q libvirt-python python libvirt-sandbox kernel
libvirt-python-1.1.1-3.el7.x86_64
python-2.7.5-7.el7.x86_64
libvirt-sandbox-0.5.0-3.el7.x86_64
kernel-3.10.0-0.rc7.64.el7.x86_64
How reproducible:
always
Steps to Reproduce:
[root@localhost ~]# virt-sandbox -c lxc:/// /bin/sh
sh-4.2#
[root@localhost ~]# python
Python 2.7.5 (default, Aug 20 2013, 06:42:55)
[GCC 4.8.1 20130814 (Red Hat 4.8.1-6)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import libvirt_lxc
>>> con = libvirt_lxc.libvirt.open('lxc:///')
>>> dom = con.lookupByName('sandbox')
>>> fd = libvirt_lxc.lxcOpenNamespace(dom, 0)
>>> fd
Actual results:
>>> import libvirt_lxc
>>> con = libvirt_lxc.libvirt.open('lxc:///')
>>> dom = con.lookupByName('sandbox')
>>> fd = libvirt_lxc.lxcOpenNamespace(dom, 0)
>>> fd
Segmentation fault (core dumped)
Expected results:
no segmentation fault.
Additional info:
valgrind defects memory error, it looks like a python component bug.
==20257== 1 errors in context 1 of 464:
==20257== Invalid read of size 8
==20257== at 0x3EF4A73DAB: ??? (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3EF4A8394E: ??? (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3EF4A66CAA: PyFile_WriteObject (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3EF4ADC48B: PyEval_EvalFrameEx (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3EF4ADEC7C: PyEval_EvalCodeEx (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3EF4ADED81: PyEval_EvalCode (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3EF4AF78AE: ??? (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3EF4AF89CD: PyRun_FileExFlags (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3EF4AF9B38: PyRun_SimpleFileExFlags (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3EF4B0A66E: Py_Main (in /usr/lib64/libpython2.7.so.1.0)
==20257== by 0x3E4A821B74: (below main) (in /usr/lib64/libc-2.17.so)
==20257== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==20257==
==20257==
==20257== 1 errors in context 2 of 464:
==20257== Conditional jump or move depends on uninitialised value(s)
==20257== at 0x3E4A41850B: index (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A4079B3: expand_dynamic_string_token (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A4084D7: _dl_map_object (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A40160D: map_doit (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A40F303: _dl_catch_error (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A400E8D: do_preload (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A404284: dl_main (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A4161F9: _dl_sysdep_start (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A404D93: _dl_start (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A401427: ??? (in /usr/lib64/ld-2.17.so)
==20257== by 0x1: ???
==20257== by 0x7FF00078E: ???
==20257== Uninitialised value was created by a stack allocation
==20257== at 0x3E4A404214: dl_main (in /usr/lib64/ld-2.17.so)
==20257==
==20257==
==20257== 1 errors in context 3 of 464:
==20257== Conditional jump or move depends on uninitialised value(s)
==20257== at 0x3E4A418506: index (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A4079B3: expand_dynamic_string_token (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A4084D7: _dl_map_object (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A40160D: map_doit (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A40F303: _dl_catch_error (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A400E8D: do_preload (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A404284: dl_main (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A4161F9: _dl_sysdep_start (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A404D93: _dl_start (in /usr/lib64/ld-2.17.so)
==20257== by 0x3E4A401427: ??? (in /usr/lib64/ld-2.17.so)
==20257== by 0x1: ???
==20257== by 0x7FF00078E: ???
==20257== Uninitialised value was created by a stack allocation
==20257== at 0x3E4A404214: dl_main (in /usr/lib64/ld-2.17.so)