Bionic/xfstests
======

Original/patched kernel versions:
        
        $ grep -h ^PLATFORM xfstests.log.* | sort -u
        PLATFORM      -- Linux/s390x mfo-s390x-bionic 4.15.0-122-generic 
#124+test20201026b1 SMP Mon Oct 26 13:10:37 -03 2020
        PLATFORM      -- Linux/s390x mfo-s390x-bionic 4.15.0-122-generic 
#124-Ubuntu SMP Thu Oct 15 13:02:05 UTC 2020


Original kernel:
---

        $ VERSION='4.15.0-122-generic #124-Ubuntu'

Number of runs:

        $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | 
grep -c Failures:
        10

        $ RUNS=10

Consistent fail set:

        $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | 
grep ^Failures: | cut -d' ' -f2- | tr ' ' '\n' | sort | uniq -c | sort | grep 
-w $RUNS
             10 btrfs/186
             10 btrfs/193
             10 btrfs/200
             10 btrfs/202
             10 btrfs/204
             10 btrfs/205
             10 btrfs/214
             10 btrfs/219
             10 btrfs/220
             10 btrfs/221
             10 btrfs/222
             10 generic/260
             10 generic/286
             10 generic/301
             10 generic/371
             10 generic/405
             10 generic/407
             10 generic/465
             10 generic/480
             10 generic/488
             10 generic/502
             10 generic/513
             10 generic/526
             10 generic/527
             10 generic/546
             10 generic/562
             10 generic/565

Flaky fail set:

        $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | 
grep ^Failures: | cut -d' ' -f2- | tr ' ' '\n' | sort | uniq -c | sort | grep 
-w -v $RUNS
              1 btrfs/028
              1 generic/089
              1 generic/464
              2 generic/175
              3 generic/476
              4 generic/531
              7 btrfs/078
              8 btrfs/010
              8 generic/074
              8 generic/142
              8 generic/143
              9 generic/133
              9 generic/475


Patched kernel:
---

        $ VERSION='4.15.0-122-generic #124+test20201026b1'

Number of runs:

        $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | 
grep -c Failures:
        10

Consistent fail set:

        $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | 
grep ^Failures: | cut -d' ' -f2- | tr ' ' '\n' | sort | uniq -c | sort | grep 
-w $RUNS
             10 btrfs/186
             10 btrfs/193
             10 btrfs/200
             10 btrfs/202
             10 btrfs/204
             10 btrfs/205
             10 btrfs/214
             10 btrfs/219
             10 btrfs/220
             10 btrfs/221
             10 btrfs/222
             10 generic/260
             10 generic/286
             10 generic/301
             10 generic/371
             10 generic/405
             10 generic/407
             10 generic/465
             10 generic/475     <<-- New but not regression; failed 9/10 in 
original kernel.
             10 generic/480
             10 generic/488
             10 generic/502
             10 generic/513
             10 generic/526
             10 generic/527
             10 generic/546
             10 generic/562
             10 generic/565

Flaky fail set:

        $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | 
grep ^Failures: | cut -d' ' -f2- | tr ' ' '\n' | sort | uniq -c | sort | grep 
-w -v $RUNS
              1 btrfs/028
              1 generic/089
              1 generic/102
              1 generic/269
              2 generic/166
              2 generic/464
              2 generic/476
              4 btrfs/010
              4 generic/074
              4 generic/142
              4 generic/143
              4 generic/531
              6 generic/133
              8 generic/175     << Increased from 2/10 to 8/10 but it seems a 
regression from other btrfs patches; see Focal.
              9 btrfs/078

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https://bugs.launchpad.net/bugs/1902254

Title:
  Bionic: btrfs: kernel BUG at /build/linux-
  eTBZpZ/linux-4.15.0/fs/btrfs/ctree.c:3233!

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