Reading bionic commit 6e096fe0027f723f746f8179503784cb3579294a
("bpf/tests: Do not PASS tests without actually testing the result"),
and looking at the specific failing tests, it looks to be the case that
the test change has shown these failures starting now. Also included in
focal.

There is a JIT bug on ppc64, fixed by upstream commit 
8bbc9d822421d9ac8ff9ed26a3713c9afc69d6c8 ("powerpc/bpf: Fix BPF_MOD when imm == 
1").

Testing with userspace, eBPF works fine, possibly because the verifier
changes the code before giving it to JIT. However, cBPF fails. Both on
4.15.0-160 and 4.15.0-162, so not a regression.

Cascardo.

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: linux (Ubuntu Focal)
       Status: New => In Progress

** Changed in: linux (Ubuntu Bionic)
     Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)

** Changed in: linux (Ubuntu Focal)
     Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)

** Changed in: linux (Ubuntu Focal)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Bionic)
   Importance: Undecided => Medium

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1948351

Title:
  linux ADT test_bpf failure with linux/5.4.0-90.101

Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Bionic:
  In Progress
Status in linux source package in Focal:
  In Progress

Bug description:
  This is a scripted bug report about ADT failures while running linux
  tests for linux/5.4.0-90.101 on focal. Whether this is caused by the
  dep8 tests of the tested source or the kernel has yet to be
  determined.

  
  Consistently failing on Focal/linux 5.4.0-90.101

  13:15:26 DEBUG| [stdout] # selftests: net: test_bpf.sh
  13:15:27 DEBUG| [stdout] # test_bpf: [FAIL]
  13:15:27 DEBUG| [stdout] not ok 9 selftests: net: test_bpf.sh # exit=1

  
  Testing failed on:
      ppc64el: 
https://autopkgtest.ubuntu.com/results/autopkgtest-focal/focal/ppc64el/l/linux/20211021_141544_eda49@/log.gz

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