Bug 1008924
| Summary: | freecon() does not work as expected, leaks memory; selabel_close() valgrind errors | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jan Synacek <jsynacek> | ||||
| Component: | libselinux | Assignee: | Miroslav Grepl <mgrepl> | ||||
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 22 | CC: | dwalsh, eparis, mgrepl, rhack, sdsmall | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2016-07-19 10:23:52 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: |
|
||||||
The memory is actually allocated in a thread variable. but why does it not show up in the definitely, indirectlry or possibly lost category? This bug appears to have been reported against 'rawhide' during the Fedora 22 development cycle. Changing version to '22'. More information and reason for this action is here: https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora22 Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is no longer maintained, which means that it will not receive any further security or bug fix updates.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 798745 [details] Reproducer Description of problem: Valgrind shows some memory leaks and problems with unitialized values. See below. Version-Release number of selected component (if applicable): libselinux-2.1.13-17.fc20.x86_64 Steps to Reproduce: 1. echo hello > /etc/test-selinux # create a testing file 2. gcc test-selinux.c -o test-selinux -lselinux # compile the reproducer 3. valgrind --leak-check=full --show-reachable=yes --track-origins=yes ./test-selinux # run the reproducer under valgrind Actual results: ==25410== Memcheck, a memory error detector ==25410== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al. ==25410== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info ==25410== Command: ./test-selinux ==25410== unconfined_u:object_r:etc_t:s0 system_u:object_r:etc_t:s0 ==25410== Conditional jump or move depends on uninitialised value(s) ==25410== at 0x35D86123CE: closef (label_file.c:570) ==25410== by 0x35D8614B74: selabel_close (label.c:250) ==25410== by 0x400A0E: main (in /home/jsynacek/test-selinux) ==25410== ==25410== ==25410== HEAP SUMMARY: ==25410== in use at exit: 54 bytes in 2 blocks ==25410== total heap usage: 33,618 allocs, 33,616 frees, 4,954,448 bytes allocated ==25410== ==25410== 27 bytes in 1 blocks are still reachable in loss record 1 of 2 ==25410== at 0x4A06409: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==25410== by 0x35D6689A29: strdup (strdup.c:42) ==25410== by 0x35D8615624: selinux_raw_to_trans_context (setrans_client.c:352) ==25410== by 0x35D8614716: selabel_lookup_common (label.c:215) ==25410== by 0x35D8614ABD: selabel_lookup (label.c:226) ==25410== by 0x4009BE: main (in /home/jsynacek/test-selinux) ==25410== ==25410== 27 bytes in 1 blocks are still reachable in loss record 2 of 2 ==25410== at 0x4A06409: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==25410== by 0x35D6689A29: strdup (strdup.c:42) ==25410== by 0x35D861564B: selinux_raw_to_trans_context (setrans_client.c:355) ==25410== by 0x35D8614716: selabel_lookup_common (label.c:215) ==25410== by 0x35D8614ABD: selabel_lookup (label.c:226) ==25410== by 0x4009BE: main (in /home/jsynacek/test-selinux) ==25410== ==25410== LEAK SUMMARY: ==25410== definitely lost: 0 bytes in 0 blocks ==25410== indirectly lost: 0 bytes in 0 blocks ==25410== possibly lost: 0 bytes in 0 blocks ==25410== still reachable: 54 bytes in 2 blocks ==25410== suppressed: 0 bytes in 0 blocks ==25410== ==25410== For counts of detected and suppressed errors, rerun with: -v ==25410== ERROR SUMMARY: 24 errors from 1 contexts (suppressed: 2 from 2) Expected results: No memory leaks and no errors about uninitialized values. Additional info: