Bug 964008
| Summary: | Segmention fault in journalctl | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | David Strauss <david> |
| Component: | systemd | Assignee: | Michal Schmidt <mschmidt> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 17 | CC: | johannbg, lnykryn, mschmidt, msekleta, notting, plautrba, systemd-maint, vpavlin, zbyszek |
| 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: | 2013-08-01 18:38:06 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: | |||
Here's the version that box has installed. Installed Packages Name : systemd Arch : x86_64 Version : 44 Release : 24.fc17 Correction: Presumably, f could be NULL at the time this log item tries to print. The printf-like functionality behind log_debug will work around f->path being NULL if f isn't. We cannot access f->path after journal_file_close(f). This got fixed upstream in:
commit 44a5fa34d9f9a5050cdf4a497e6ccf5af2d1678d
Author: Lennart Poettering <lennart>
Date: Tue Oct 16 22:59:28 2012 +0200
sd-journal: fix bad memory access
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This code may be completely different in current journalctl implementations, but here's what I found. Presumably, f->path could be NULL at the time this log item tries to print. [straussd@endpoint21d5d347 tmp]$ sudo gdb -ex "set pagination 0" -ex "thread apply all bt" -batch `which journalctl` coredump.journalctl.18997.endpoint21d5d347.1367282164 [New LWP 18997] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `journalctl -o json -f'. Program terminated with signal 11, Segmentation fault. #0 remove_file (j=j@entry=0x25d4010, prefix=prefix@entry=0x25e3130 "/run/log/journal/05046d45ef454d85af397025b312cff6", filename=filename@entry=0x7fff0f05db20 "system", dir=0x0) at src/journal/sd-journal.c:1018 1018 log_debug("File %s got removed.", f->path); Thread 1 (Thread 0x7f6eaa97c780 (LWP 18997)): #0 remove_file (j=j@entry=0x25d4010, prefix=prefix@entry=0x25e3130 "/run/log/journal/05046d45ef454d85af397025b312cff6", filename=filename@entry=0x7fff0f05db20 "system", dir=0x0) at src/journal/sd-journal.c:1018 #1 0x0000003e0d60564b in process_inotify_event (e=<optimized out>, j=<optimized out>) at src/journal/sd-journal.c:1565 #2 sd_journal_process (j=0x25d4010) at src/journal/sd-journal.c:1644 #3 0x000000000040292e in main (argc=<optimized out>, argv=<optimized out>) at src/journal/journalctl.c:368