Bug 2181826
| Summary: | hardlink segfaults in strlen() on armv7 | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Dan Horák <dan> |
| Component: | util-linux | Assignee: | Karel Zak <kzak> |
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 36 | CC: | aoliva, arjun.is, codonell, dj, fweimer, jlaw, kzak, mcermak, mcoufal, mfabian, pbrobinson, pfrankli, sipoyare, skolosov |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | armv7hl | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2023-05-25 17:23:07 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: | |||
| Bug Depends On: | |||
| Bug Blocks: | 245418 | ||
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Description
Dan Horák
2023-03-26 10:50:54 UTC
May you please reach out to the Fedora Arm community and discuss the issue? This is not likely a glibc issue but possibly a toolchain issue. Note that __fmt is 0x0 in the call chain and it fails, so this does seem like a toolchain issue. I'm going to switch to util-linux to ask them if they've seen this reported before. Karel, Have you seen this before for armv7? Based on the feedback on the arm mailing list I believe we can confirm there is an issue on F-36, but not in F-35. The hardlink binary from F-35 runs well (no crash) on F-36, which I think rules out glibc. The F 35->36 transition also means gcc 11->12 transition, so there could be a compiler issue in gcc 12. I have never seen it before.
The problematic code (in hardlink.c) is:
jlog(JLOG_VERBOSE2, " %5zu: [%" PRIu64 "/%" PRIu64 "/%zu] %s",
stats.files, sb->st_dev, sb->st_ino,
(size_t) sb->st_nlink, fpath);
And jlog() is implemented as:
va_start(args, format);
vfprintf(stdout, format, args);
va_end(args);
The fpath (used for %s in the format) comes from nftw().
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