Bug 1640391 - Binaries compiled against gperftools-libs 2.6 libtcmalloc fail on systems with 2.4 installed
Summary: Binaries compiled against gperftools-libs 2.6 libtcmalloc fail on systems wit...
Keywords:
Status: CLOSED CANTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: gperftools
Version: 7.5
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: rc
: ---
Assignee: Paolo Bonzini
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-10-18 00:29 UTC by Brad Hubbard
Modified: 2019-03-08 15:00 UTC (History)
3 users (show)

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Last Closed: 2019-03-08 15:00:13 UTC
Target Upstream Version:

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System ID Private Priority Status Summary Last Updated
Ceph Project Bug Tracker 36508 0 None None None 2018-10-18 00:45:40 UTC

Description Brad Hubbard 2018-10-18 00:29:35 UTC 
Description of problem:

Binaries compiled against the 2.6 version of the libraries (in this case ceph-osd) have the following undefined symbols.

# nm -D /usr/bin/ceph-osd|egrep '(_ZdaPvm|_ZdlPvm)'                                                                                                                                                                 
                 U _ZdaPvm                                                                                                                                                                                                                  
                 U _ZdlPvm

The 2.4 version of libtcmalloc.so.4 (gperftools-libs-2.4-8.el7.x86_64) does not export these symbols.

# nm -D /usr/lib64/libtcmalloc.so.4|egrep '(_ZdaPvm|_ZdlPvm)'
#

This leads to errors such as the following.

ceph-osd: symbol lookup error: ceph-osd: undefined symbol: _ZdaPvm

Installing gperftools-libs-2.6.1-1.el7.x86_64.rpm resolves the issue.

# nm -D /usr/lib64/libtcmalloc.so.4|egrep '(_ZdaPvm|_ZdlPvm)'
0000000000035dc0 T _ZdaPvm
0000000000035dc0 T _ZdlPvm

Maybe the library version number should have been incremented between these releases?
Comment 1 Brad Hubbard 2018-10-18 00:35:31 UTC 
See https://github.com/gperftools/gperftools/commit/7efb3ecf37d88edf9cf9a43efb89b425eaf81d5e , search for "ENABLE_SIZED_DELETE".
Comment 4 Paolo Bonzini 2018-12-14 14:53:33 UTC 
> Maybe the library version number should have been incremented between these releases?

The library version number only says that there is no compatibilty between a binary for an old version of the library, on a system with a new version of the library.

Here you have a binary for a new version of the library, on a system with an old version of the library.  It is expected that it fails if the library defines new symbols, and the patch is pretty intrusive so I'd rather avoid this.

What system with 2.6 gperftools did you build on? (Fedora?)
Comment 5 Brad Hubbard 2018-12-14 21:53:08 UTC 
(In reply to Paolo Bonzini from comment #4)
> 
> What system with 2.6 gperftools did you build on? (Fedora?)

Centos 7
gperftools.x86_64                                    2.6.1-1.el7                                    base
Comment 6 Paolo Bonzini 2019-03-08 15:00:13 UTC 
You need to install the older version if you want to be backwards compatible.
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