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Date:      Mon, 29 Sep 2025 14:20:35 +0000
From:      bugzilla-noreply@freebsd.org
To:        testing@FreeBSD.org
Subject:   [Bug 289902] usr.bin/tail/tail_test:follow_rename test fails intermittently on aarch64 in CI
Message-ID:  <bug-289902-32464@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D289902

            Bug ID: 289902
           Summary: usr.bin/tail/tail_test:follow_rename test fails
                    intermittently on aarch64 in CI
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: arm64
                OS: Any
            Status: New
          Keywords: regression
          Severity: Affects Only Me
          Priority: ---
         Component: tests
          Assignee: markj@FreeBSD.org
          Reporter: me@svmhdvn.name
                CC: testing@FreeBSD.org

Created attachment 264155
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D264155&action=
=3Dedit
kyua test report

The 'usr.bin/tail/tail_test:follow_rename' testcase fails intermittently on
aarch64 in CI:


=3D=3D=3D> usr.bin/tail/tail_test:follow_rename
Result:     failed: atf-check failed; see the output of the test for details

Standard output:
Executing command [ mv infile infile_old ]
Executing command [ mv infile_new infile ]
Executing command [ cmp expectfile outfile ]

Standard error:
Fail: incorrect exit status: 1, expected: 0
stdout:
expectfile outfile differ: char 1, line 1

stderr:

Files left in work directory after failure: expectfile, infile, infile_old,
outfile


I have reproduced this error using Bricoler with 100 runs for good measure =
and
attached the failing test report in this bug:

$ bricoler run freebsd-src-regression-suite --param freebsd-src:url=3D/usr/=
src
--param freebsd-src:branch=3D --param
freebsd-src-regression-suite:hypervisor=3Dbhyve --param
freebsd-src-regression-suite:memory=3D4096 --param
freebsd-src-regression-suite:ncpus=3D2 --param
freebsd-src-regression-suite:parallelism=3D1 --param
freebsd-src-regression-suite:count=3D100 --param
freebsd-src-regression-suite:tests=3D'usr.bin/tail/tail_test:follow_rename'

@markj, since you added the tests in
https://cgit.freebsd.org/src/commit/?id=3D58b1a126b98f9d64f30246c90d6c049fd=
78dda6b
(tail: Add regression tests for -f and -F), please triage as necessary.

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