Bug 1418054

Summary:	pvscan segfault when attempting to scan while underline devices were being repartitioned
Product:	Red Hat Enterprise Linux 6	Reporter:	Corey Marthaler <cmarthal>
Component:	lvm2	Assignee:	LVM and device-mapper development team <lvm-team>
lvm2 sub component:	Displaying and Reporting (RHEL6)	QA Contact:	cluster-qe <cluster-qe>
Status:	CLOSED WONTFIX	Docs Contact:
Severity:	medium
Priority:	unspecified	CC:	agk, heinzm, jbrassow, msnitzer, prajnoha, prockai, zkabelac
Version:	6.9
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-12-06 11:49:45 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Corey Marthaler 2017-01-31 17:44:33 UTC

Description of problem:
Core was generated by `pvscan'.
Program terminated with signal 11, Segmentation fault.


#0  __strncpy_sse2 (s1=0x7ffcacd3a17f "", s2=0x80 <Address 0x80 out of bounds>, n=32) at ./strncpy.c:42
#1  0x00007f5f8925dada in lvmcache_info_from_pvid (pvid=<value optimized out>, valid_only=0) at /usr/include/bits/string3.h:121
#2  0x00007f5f892a990d in _check_or_repair_pv_ext (cmd=<value optimized out>, vgname=<value optimized out>, vgid=0x7f5f00000000 <Address 0x7f5f00000000 out of bounds>, warn_flags=2341128336, 
    consistent=<value optimized out>, precommitted=0) at metadata/metadata.c:3752
#3  _vg_read (cmd=<value optimized out>, vgname=<value optimized out>, vgid=0x7f5f00000000 <Address 0x7f5f00000000 out of bounds>, warn_flags=2341128336, consistent=<value optimized out>, precommitted=0)
    at metadata/metadata.c:4308
#4  0x00007f5f892ad0a8 in vg_read_internal (cmd=<value optimized out>, vgname=0x7f5f8ab0a068 "black_bird", vgid=<value optimized out>, warn_flags=1, consistent=0x7ffcacd3a418) at metadata/metadata.c:4461
#5  0x00007f5f892ad9ad in _recover_vg (cmd=0x7f5f8aac4110, vg_name=0x7f5f8ab0a068 "black_bird", vgid=0x7f5f8ab0a040 "7pu2Bz49SSojNDmv0l9F9qqR79Zlor2w", read_flags=262144, lockd_state=<value optimized out>)
    at metadata/metadata.c:5189
#6  _vg_lock_and_read (cmd=0x7f5f8aac4110, vg_name=0x7f5f8ab0a068 "black_bird", vgid=0x7f5f8ab0a040 "7pu2Bz49SSojNDmv0l9F9qqR79Zlor2w", read_flags=262144, lockd_state=<value optimized out>)
    at metadata/metadata.c:5499
#7  vg_read (cmd=0x7f5f8aac4110, vg_name=0x7f5f8ab0a068 "black_bird", vgid=0x7f5f8ab0a040 "7pu2Bz49SSojNDmv0l9F9qqR79Zlor2w", read_flags=262144, lockd_state=<value optimized out>)
    at metadata/metadata.c:5585
#8  0x00007f5f89243ea7 in _process_pvs_in_vgs (cmd=0x7f5f8aac4110, read_flags=262144, all_vgnameids=0x7ffcacd3a5e0, all_devices=<value optimized out>, arg_devices=<value optimized out>, 
    arg_tags=0x7ffcacd3a620, process_all_pvs=1, process_all_devices=0, handle=0x7f5f8ab09398, process_single_pv=0x7f5f89240210 <_pvscan_single>) at toollib.c:3261
#9  0x00007f5f89249774 in process_each_pv (cmd=0x7f5f8aac4110, argc=<value optimized out>, argv=<value optimized out>, only_this_vgname=0x0, read_flags=262144, handle=0x7f5f8ab09398, 
    process_single_pv=0x7f5f89240210 <_pvscan_single>) at toollib.c:3399
#10 0x00007f5f8923fd0e in pvscan (cmd=0x7f5f8aac4110, argc=0, argv=0x7ffcacd3ab70) at pvscan.c:425
#11 0x00007f5f89233559 in lvm_run_command (cmd=0x7f5f8aac4110, argc=0, argv=0x7ffcacd3ab70) at lvmcmdline.c:1655
#12 0x00007f5f892377e9 in lvm2_main (argc=1, argv=0x7ffcacd3ab68) at lvmcmdline.c:2121
#13 0x00007f5f87f9ed1d in __libc_start_main (main=0x7f5f89254300 <main>, argc=1, ubp_av=0x7ffcacd3ab68, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, 
    stack_end=0x7ffcacd3ab58) at libc-start.c:226
#14 0x00007f5f8921c269 in _start ()



Version-Release number of selected component (if applicable):
2.6.32-684.el6.x86_64

lvm2-2.02.143-12.el6    BUILT: Wed Jan 11 09:35:04 CST 2017
lvm2-libs-2.02.143-12.el6    BUILT: Wed Jan 11 09:35:04 CST 2017
lvm2-cluster-2.02.143-12.el6    BUILT: Wed Jan 11 09:35:04 CST 2017
udev-147-2.73.el6_8.2    BUILT: Tue Aug 30 08:17:19 CDT 2016
device-mapper-1.02.117-12.el6    BUILT: Wed Jan 11 09:35:04 CST 2017
device-mapper-libs-1.02.117-12.el6    BUILT: Wed Jan 11 09:35:04 CST 2017
device-mapper-event-1.02.117-12.el6    BUILT: Wed Jan 11 09:35:04 CST 2017
device-mapper-event-libs-1.02.117-12.el6    BUILT: Wed Jan 11 09:35:04 CST 2017
device-mapper-persistent-data-0.6.2-0.1.rc7.el6    BUILT: Tue Mar 22 08:58:09 CDT 2016


How reproducible:
Only once

Comment 2 Jan Kurik 2017-12-06 11:49:45 UTC

Red Hat Enterprise Linux 6 is in the Production 3 Phase. During the Production 3 Phase, Critical impact Security Advisories (RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available.

The official life cycle policy can be reviewed here:

http://redhat.com/rhel/lifecycle

This issue does not meet the inclusion criteria for the Production 3 Phase and will be marked as CLOSED/WONTFIX. If this remains a critical requirement, please contact Red Hat Customer Support to request a re-evaluation of the issue, citing a clear business justification. Note that a strong business justification will be required for re-evaluation. Red Hat Customer Support can be contacted via the Red Hat Customer Portal at the following URL:

https://access.redhat.com/