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List:       linux-xfs
Subject:    [Bug 201259] New: [xfstests shared/010]: maybe pagecache contents is mutated after cycle mount
From:       bugzilla-daemon () bugzilla ! kernel ! org
Date:       2018-09-28 6:06:53
Message-ID: bug-201259-201763 () https ! bugzilla ! kernel ! org/
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https://bugzilla.kernel.org/show_bug.cgi?id=201259

            Bug ID: 201259
           Summary: [xfstests shared/010]: maybe pagecache contents is
                    mutated after cycle mount
           Product: File System
           Version: 2.5
    Kernel Version: v4.19-rc5
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: XFS
          Assignee: filesystem_xfs@kernel-bugs.kernel.org
          Reporter: zlang@redhat.com
        Regression: No

Recently, shared/010 sometimes hit below issue:

QA output created by 010
/mnt/scratch/dir/p0/deXXXXXXXXXXX/d218X/d3a0XXX/d3da/d90XXXXXXXXXXXXX/d1c8XXXXXXXXX/d7 \
1/d75XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX \
XXXXXXXXXXXXXXXXXXX/da6XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/db9XXXX/de0XXXXXXXXXXXXX/d7e0XXXXXXXXXXXX/d1d9X/f476XXXX:
 FAILED
md5sum: WARNING: 1 computed checksum did NOT match
Silence is golden

Looks like something changed after cycle mount, cause this integrity issue.

Version-Release number of selected component (if applicable):
kernel v4.19-rc5

How reproducible:
10~30%

Steps to Reproduce:
1) git clone https://github.com/markfasheh/duperemove.git
2) cd duperemove; make; make install
3) Run shared/010 on XFS several times, with reflink=1:

Actual results:
checksum mismatch

Expected results:
test always pass

Additional info:
I can't be sure this's a real bug, maybe it's case issue. But I don't know
what's wrong with the case, so report this bug to get more
reviewing/suggestions from XFS developers. Thanks.

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