Bug 1082370
| Summary: | -shared -g3 can trigger terrabyte+ mallocs() in ld | ||||||||
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| Product: | [Fedora] Fedora | Reporter: | Dave Mitchell <davem> | ||||||
| Component: | binutils | Assignee: | Nick Clifton <nickc> | ||||||
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||
| Severity: | medium | Docs Contact: | |||||||
| Priority: | unspecified | ||||||||
| Version: | 20 | CC: | jakub, law, nickc | ||||||
| Target Milestone: | --- | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | x86_64 | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2015-06-30 00:57:58 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: | |||||||||
| Attachments: |
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I don't see any issues on the side of code generated by gcc. Furthermore, it links just fine with -fuse-ld=gold, therefore I'd say it is a ld.bfd bug. Created attachment 890516 [details]
Check for pathalogical debug strings
It is not a GCC bug true - but it is a special case. The debug strings generated by the test program just happen to include "ZLIB" as the first four characters of the .debug_str section. The BFD library detects this and assumes that the section has been compressed by the zlib library and that it needs to be decompressed...
Since the next 8 bytes in a compressed section are the uncompressed size, the BFD library reads these in and so converts "_VER_SUB" into a size, which naturally enough is too big for the linker to handle.
The uploaded patch should fix this. I am running it through regression tests now.
Fixed in: binutils-2.23.88.0.1-17.fc20 binutils-2.24-13.fc21 This message is a reminder that Fedora 20 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 20. It is Fedora's policy to close all bug reports from releases that are no longer maintained.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 '20'. 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 20 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 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 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. |
Created attachment 880480 [details] sample failing C code Description of problem: Compiling the attached trivial c file triggers "Memory exhausted" errors in ld. An strace shows it trying to mmap 6869754501689204736 bytes. Version-Release number of selected component (if applicable): gcc-4.8.2-7.fc20.x86_64 also, binutils-2.23.88.0.1-13.fc20.x86_64. Problem also occurred on F18. How reproducible: Steps to Reproduce: 1. Save the attachment as foo.c somewhere. 2. /usr/bin/cc -c -g3 -fstack-protector -fPIC foo.c 3. /usr/bin/cc -shared -g3 foo.o -o /tmp/foo.so Actual results: $ /usr/bin/cc -shared -g3 foo.o -o /tmp/foo.so /usr/bin/ld: final link failed: Memory exhausted collect2: error: ld returned 1 exit status $ Expected results: No error. Additional info: