Bug 1198161
| Summary: | SEGV due to -Xlinker -export-dynamic [wait for Python 3.7.4] | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jan Kratochvil <jan.kratochvil> |
| Component: | python3 | Assignee: | Victor Stinner <vstinner> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | low | ||
| Version: | 30 | CC: | abokovoy, asn, dave.booth, extras-qa, gbenson, gdeschner, jan.kratochvil, jberan, jlayton, madam, mhroncok, palves, pviktori, sbose, sergiodj, ssorce, tomspur, vstinner |
| Target Milestone: | --- | Keywords: | Reopened |
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Unspecified | ||
| URL: | https://retrace.fedoraproject.org/faf/reports/bthash/71b890ea2fdf79263cf4f1f4d430985cdd4a0a26 | ||
| Whiteboard: | abrt_hash:717f8ce747e0f26a850459532b445d59bd0344e4 | ||
| Fixed In Version: | python3-3.7.4-1.fc30 python3-3.7.4-1.fc29 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 1198158 | Environment: | |
| Last Closed: | 2019-07-29 01:08:01 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1197914, 1198158 | ||
| Bug Blocks: | |||
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Description
Jan Kratochvil
2015-03-03 13:34:05 UTC
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component. This message is a reminder that Fedora 21 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 21. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '21'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 21 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. python3-devel-3.4.3-5.fc24.x86_64 This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component. This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle. Changing version to '24'. More information and reason for this action is here: https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase This message is a reminder that Fedora 24 is nearing its end of life. Approximately 2 (two) weeks from now Fedora will stop maintaining and issuing updates for Fedora 24. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '24'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 24 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 24 changed to end-of-life (EOL) status on 2017-08-08. Fedora 24 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. I don't think this was fixed, and I'd still like to get around to investigating it. See here: https://sourceware.org/bugzilla/show_bug.cgi?id=16881 It has references to further discussions, to the corresponding upstream GDB bug, and to the GDB workaround currently in place. So this should be fixed nowadays, but I haven't double checked which Fedora version started carrying the fix. I'd be nice if libwins_nss.so were fixed to avoid poluting the namespace, as per the referenced discussions. If you google for timeval_add, you'll see this doesn't affect just GDB. E.g.: https://blog.schmichael.com/2006/11/29/mdns-crashes-samba/ This bug appears to have been reported against 'rawhide' during the Fedora 27 development cycle. Changing version to '27'. This message is a reminder that Fedora 27 is nearing its end of life. On 2018-Nov-30 Fedora will stop maintaining and issuing updates for Fedora 27. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '27'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 27 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Setting this to low priority. It would be great if someone else would get to this earlier than we can. If that's your case, please assign the bug to yourself (and adjust priority accordingly). This bug appears to have been reported against 'rawhide' during the Fedora 30 development cycle. Changing version to '30. This issue is open since 2015... Is it still up to date? It's unclear to me if the issue is really on Python side or on Samba side... Can we close this issue if there is no activity from the reporter? Jan: Can you still reproduce the issue on Fedora 29? The bug is definitely on Python side: python3-devel-3.7.2-4.fc29.x86_64 $ python3-config --ldflags -L/usr/lib64 -lpython3.7m -lpthread -ldl -lutil -lm -Xlinker -export-dynamic Linking some one shared library should not affect how the main executable is linked. It will no longer crash GDB as GDB has now some ugly workaround to remove that -export-dynamic: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commitdiff;h=a4a1c15754d144d14dc48cd8ff62601f977e908c Also the upstream Bug is still open: Use -Wl,--dynamic-list=x.list, not -Xlinker -export-dynamic https://bugs.python.org/issue10112 Does someone know if https://fedoraproject.org/wiki/Changes/Python_Extension_Flags change will help or fix this issue? (In reply to Victor Stinner from comment #16) > Does someone know if > https://fedoraproject.org/wiki/Changes/Python_Extension_Flags change will > help or fix this issue? Is that "-Xlinker -export-dynamic" present in upstream build of Python? I think it is (I haven't verified it) so then the Python_Extension_Flags change would be unrelated. > Is that "-Xlinker -export-dynamic" present in upstream build of Python? The flag comes from LINKFORSHARED variable and it's defined as "-Xlinker -export-dynamic" by configure.ac. So yes, the flag comes from upstream. > Does someone know if https://fedoraproject.org/wiki/Changes/Python_Extension_Flags change will help or fix this issue? I checked the code of Python and I can now say: no, this change isn't going to fix this issue. This issue is able python-config script, whereas https://fedoraproject.org/wiki/Changes/Python_Extension_Flags is able distutils and sysconfig modules of the Python stdlib. I created https://bugs.python.org/issue36508 to propose to modifiy python-config --ldflags to no longer includes LINKFORSHARED ("-Xlinker -export-dynamic" on Linux). I checked Python source code and the "ld" manual page and it seems like -export-dynamic must only be used for executables, like building "python" executable. This linker flag must not be exported by python-config. I just pushed a fix upstream in the future Python 3.8: New changeset e65f01f78d7bda3013fc5be485afa87ff56511d9 by Victor Stinner in branch 'master': bpo-36508: python-config don't export LINKFORSHARED (GH-12661) https://github.com/python/cpython/commit/e65f01f78d7bda3013fc5be485afa87ff56511d9 This will be fixed in the next 3.8 and 3.7 release. Let us know if you need it sooner than that. FEDORA-2019-9bfb4a3e4b has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-9bfb4a3e4b FEDORA-2019-60a1defcd1 has been submitted as an update to Fedora 29. https://bodhi.fedoraproject.org/updates/FEDORA-2019-60a1defcd1 python3-3.7.4-1.fc30, python3-docs-3.7.4-1.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report. python3-3.7.4-1.fc29, python3-docs-3.7.4-1.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report. |