[Bug 680125] New: dlclose() can not unload all dynamic libraries

List overview All Threads
Download

newer

older

[Bug 1016402] X11:XOrg/Mesa:...

[Bug 1017562] OpenSUSE 13.2...

bugzilla_noreply＠novell.com

16 Mar 2011 16 Mar '11

12:08

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c0

Summary: dlclose() can not unload all dynamic libraries Classification: openSUSE Product: openSUSE 11.4 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Major Priority: P5 - None Component: Development AssignedTo: pth@novell.com ReportedBy: gotterdammerung@web.de QAContact: qa@suse.de Found By: --- Blocker: ---

Created an attachment (id=419657) --> (http://bugzilla.novell.com/attachment.cgi?id=419657) test program which opens a dl from cmdline, closes it and checks if it is still open

User-Agent: Mozilla/5.0 (X11; U; Linux i686; de-DE; rv:1.9.2.15) Gecko/20110310 Gentoo Firefox/3.6.15

A call to dlclose() does not unload some dynamic libraries, even if the reference count drops to zero and no other loaded libraries use symbols in it. See attached test programm.

Some libraries like 'pthread' exhibit this behaviour and it propagates up the dependency chain.

This breaks programs which rely on reloading of affected dynamic libraries.

Reproducible: Always

Steps to Reproduce: 1. compile test program with 'g++ test.cpp -otest -ldl' 2. run 'for file in /usr/lib64/lib*.so; do ./test $file; done | grep failed'

Actual Results: see attachment #2

Expected Results: /usr/lib64/librt.so failed. (at least that is what happens on my gentoo machine)

AFAIK, x86_64 and x86 are both affected. Related: [[bugzilla:645652]]

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Show replies by date

bugzilla_noreply＠novell.com

16 Mar 16 Mar

12:11

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c1

--- Comment #1 from John Doe gotterdammerung@web.de 2011-03-16 12:11:08 UTC --- Created an attachment (id=419659) --> (http://bugzilla.novell.com/attachment.cgi?id=419659) output of the test program

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

12:17

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c2

John Doe gotterdammerung@web.de changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |gotterdammerung@web.de

--- Comment #2 from John Doe gotterdammerung@web.de 2011-03-16 12:17:37 UTC --- (In reply to comment #0) see attachment #419659

Related: Bug #645652

Here are the correct links. Btw: is there a way to edit above post? At least preview it before posting?

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

12:35

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c

Philipp Thomas pth@novell.com changed:

What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|pth@novell.com |matz@novell.com

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

16:57

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c3

Michael Matz matz@novell.com changed:

--- Comment #3 from Michael Matz matz@novell.com 2011-03-16 16:57:44 UTC --- Some libraries are expected to not be unloaded, they will have the NODELETE flag set, e.g.:

% readelf -d /usr/lib64/librt.so | grep DEL 0x000000006ffffffb (FLAGS_1) Flags: NODELETE

But indeed many of the other libs in your example should be able to be unloaded. E.g. libcurl.so. Indeed on a 11.3 they still were unloaded. Petr?

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

22 Mar 22 Mar

00:58

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c4

Petr Baudis pbaudis@novell.com changed:

--- Comment #4 from Petr Baudis pbaudis@novell.com 2011-03-22 00:58:27 UTC --- I think this is something we should fix, and it was probably introduced by a fix for bug 657627 being too conservative - I have not realized that pthread is also NOLOAD, so the case where RTLD_LOCAL-loaded owner is held is quite more common than I feared. We will need to rebuild the NOLOAD scope instead.

At the same time, there is simply no guarantee by libc that dlclose() will actually unload the object. Which application tries to rely on this to reload other libraries? Knowing what is broken by this will also help me prioritize fixing this.

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

10 Jun 10 Jun

14:28

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c

Philipp Thomas pth@novell.com changed:

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

10 Jul 10 Jul

19:54

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c6

John Doe gotterdammerung@web.de changed:

--- Comment #6 from John Doe gotterdammerung@web.de 2011-07-10 19:54:52 UTC --- Some application i wrote allows integrated run-time plugin developement. Reloading of altered plugins fails because of this bug. I am not aware of another application which is affected by this.

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

21 Jul 21 Jul

14:15

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c

Michael Matz matz@novell.com changed:

What |Removed |Added ---------------------------------------------------------------------------- Severity|Critical |Minor

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

2 Mar 2 Mar

14:57

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c7

Fons Rademakers Fons.Rademakers@cern.ch changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |Fons.Rademakers@cern.ch

--- Comment #7 from Fons Rademakers Fons.Rademakers@cern.ch 2012-03-02 14:57:48 UTC --- Hi,

has anything been done about this issue? The ROOT program (http://root.cern.ch) used by the world wide community of High Energy Physicist (and especially at the CERN LHC) does not function properly on OpenSuSe due to this issue, see:

http://root.cern.ch/phpBB3/viewtopic.php?t=13859

It would be greatly appreciated if the issue can be reprioritized as OpenSuSe is the only platform that is broken in this way (works on all other Linuxes, Solaris, AIX, OSX, etc).

Cheers, Fons.

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

15 Mar 15 Mar

18:22

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c9

Pat Saull patrick.saull@nrc-cnrc.gc.ca changed:

--- Comment #9 from Pat Saull patrick.saull@nrc-cnrc.gc.ca 2012-03-15 18:22:26 UTC --- Hi,

Is anyone working on fixing this problem properly? As Fons Rademakers points out in comment 7 above, this will assuredly become a major issue as more and more particle physicists upgrade their opensuse version to 11.4. It has severely broken the analysis package (ROOT) that the members of that community (and a number of other communities like medical physics) use. Thanks.

Cheers, Pat

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

11 Dec 11 Dec

10:00

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c12

--- Comment #12 from Bernhard Wiedemann bwiedemann@suse.com 2012-12-11 11:00:09 CET --- This is an autogenerated message for OBS integration: This bug (680125) was mentioned in https://build.opensuse.org/request/show/145050 Maintenance /

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

12 Dec 12 Dec

16:10

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c13

--- Comment #13 from Swamp Workflow Management swamp@suse.de 2012-12-12 16:10:09 UTC --- openSUSE-RU-2012:1639-1: An update that has two recommended fixes can now be installed.

Category: recommended (low) Bug References: 680125,791676 CVE References: Sources used: openSUSE 12.2 (src): glibc-2.15-22.9.1

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

13 Dec 13 Dec

14:40

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c14

Andreas Schwab schwab@suse.com changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |christoph.pesch@siemens.com

--- Comment #14 from Andreas Schwab schwab@suse.com 2012-12-13 15:40:15 CET --- *** Bug 645652 has been marked as a duplicate of this bug. *** http://bugzilla.novell.com/show_bug.cgi?id=645652

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

14:49

New subject: [Bug 680125] dlclose() can not unload all dynamic libraries

https://bugzilla.novell.com/show_bug.cgi?id=680125

https://bugzilla.novell.com/show_bug.cgi?id=680125#c15

Andreas Schwab schwab@suse.com changed:

--- Comment #15 from Andreas Schwab schwab@suse.com 2012-12-13 15:49:55 CET --- Fixed in 12.2.

-- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.