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[Mehmet Basaran <1922819@xxxxxxxxxxxxxxxxxx>]

It is still there with jammy:linux-lowlatency-hwe-6.8 6.8.0-48.48.3 on
testflinger:bunsen (server-amd), SRU Cycle: 2024.09.30

pty03.c:108: TINFO: Creating PTY with CAIF line discipline
../../../include/tst_fuzzy_sync.h:484: TINFO: Minimum sampling period ended
../../../include/tst_fuzzy_sync.h:307: TINFO: loop = 20, delay_bias = 0
../../../include/tst_fuzzy_sync.h:295: TINFO: start_a - start_b: { avg =   196ns, avg_dev =   148ns, dev_ratio = 0.76 }
../../../include/tst_fuzzy_sync.h:295: TINFO: end_a - start_a  : { avg = 64623ns, avg_dev = 73700ns, dev_ratio = 1.14 }
../../../include/tst_fuzzy_sync.h:295: TINFO: end_b - start_b  : { avg = 10653ns, avg_dev =   896ns, dev_ratio = 0.08 }
../../../include/tst_fuzzy_sync.h:295: TINFO: end_a - end_b    : { avg = 54167ns, avg_dev = 73690ns, dev_ratio = 1.36 }
../../../include/tst_fuzzy_sync.h:295: TINFO: spins            : { avg = 25412  , avg_dev = 32347  , dev_ratio = 1.27 }
pty03.c:95: TFAIL: Failed to set the CAIF line discipline: ENODEV (19)

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Title:
  pty03 from pty / cve-2020-14416 from cve fails on focal
  5.8.0-49.55~20.04.1 host rumford (lowlatency only)

Status in ubuntu-kernel-tests:
  New

Bug description:
  ptyo3 from pty in ubuntu_ltp_stable is failing on focal/hwe-5.8
  5.8.0-49.55~20.04.1

  only failing on host rumford and passes on others.

  Seems to be a new test to check on Focal/linux (at least in recent
  times), so I would not consider this to be a regression.

   pty03.c:93: TFAIL: Failed to set the CAIF line discipline: ENODEV (19)
   pty03.c:106: TINFO: Creating PTY with GSM line discipline
   ../../../include/tst_fuzzy_sync.h:507: TINFO: Minimum sampling period ended
   ../../../include/tst_fuzzy_sync.h:330: TINFO: loop = 20, delay_bias = 0
   ../../../include/tst_fuzzy_sync.h:318: TINFO: start_a - start_b: { avg =   149ns, avg_dev =    65ns, dev_ratio = 0.43 }  
   ../../../include/tst_fuzzy_sync.h:318: TINFO: end_a - start_a  : { avg = 2296263ns, avg_dev = 84143ns, dev_ratio = 0.04 }
   ../../../include/tst_fuzzy_sync.h:318: TINFO: end_b - start_b  : { avg = 13013ns, avg_dev =   489ns, dev_ratio = 0.04 }
   ../../../include/tst_fuzzy_sync.h:318: TINFO: end_a - end_b    : { avg = 2283399ns, avg_dev = 83810ns, dev_ratio = 0.04 }
   ../../../include/tst_fuzzy_sync.h:318: TINFO: spins            : { avg = 780052  , avg_dev = 38302  , dev_ratio = 0.05 }
   ../../../include/tst_fuzzy_sync.h:636: TINFO: Exceeded execution time, requesting exit
   pty03.c:132: TPASS: Did not crash with GSM TTY discipline

   HINT: You _MAY_ be missing kernel fixes, see:

   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ace17d568241
   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dd42bf1197144

   HINT: You _MAY_ be vulnerable to CVE(s), see:

   https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14416

   Summary:
   passed   8
   failed   1
   broken   0
   skipped  0
   warnings 0
   tag=pty03 stime=1616874034 dur=174 exit=exited stat=1 core=no cu=18506 cs=7917

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