Backporting everything necessary would be up to many potential regressions. That would include support for BPF calls and the change to make unknown opcode handling more robust.
The former would be commit cc8b0b92a1699bc32f7fec71daa2bfc90de43a4d "bpf: introduce function calls (function boundaries)", which would open a big can of worms we don't want to do. The latter is commit 5e581dad4fec0e6d062740dc35b8dc248b39d224 "bpf: make unknown opcode handling more robust". Though it might add more robustness, it changes the table in the interpreter, so I decided not to backport it now, and fixup the error messages in test_verifier, instead. By the way, commit 21ccaf21497b72f42133182716a42dbf573d314b "bpf: add further test cases around div/mod and others" should have been 3, at least 2, different commits. As it only changes tests, I am find simply doing a partial backport of it. I have it ready and tested, will send a patchset to the list. Cascardo. ** Description changed: - This is a scripted bug report about ADT failures while running linux - tests for linux/4.15.0-149.153 on bionic. Whether this is caused by the - dep8 tests of the tested source or the kernel has yet to be determined. + [Impact] + selftests net will fail on i386, requiring engineers time to investigate, or leading to new BPF failures to be ignored. + + [Fix] + The fix is only to tests. + + [Test case] + Run test_bpf.sh from tools/testing/selftests/net/. + + [Potential regression] + Tests could fail on other architectures. + + + ==================================== + + + This is a scripted bug report about ADT failures while running linux tests for linux/4.15.0-149.153 on bionic. Whether this is caused by the dep8 tests of the tested source or the kernel has yet to be determined. Testing failed on: i386: https://autopkgtest.ubuntu.com/results/autopkgtest-bionic/bionic/i386/l/linux/20210702_010055_445cd@/log.gz - 03:37:02 DEBUG| [stdout] selftests: test_bpf.sh 03:37:02 DEBUG| [stdout] ======================================== 03:37:03 ERROR| [stderr] Segmentation fault 03:37:03 DEBUG| [stdout] test_bpf: [FAIL] 03:37:03 DEBUG| [stdout] not ok 1..8 selftests: test_bpf.sh [FAIL] 03:37:03 DEBUG| [stdout] selftests: netdevice.sh 03:37:03 DEBUG| [stdout] ======================================== -- 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/1934414 Title: test_bpf.sh from ubuntu_kernel_selftests.net from linux ADT test failure with linux/4.15.0-149.153 i386 (Segmentation fault) Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: In Progress Bug description: [Impact] selftests net will fail on i386, requiring engineers time to investigate, or leading to new BPF failures to be ignored. [Fix] The fix is only to tests. [Test case] Run test_bpf.sh from tools/testing/selftests/net/. [Potential regression] Tests could fail on other architectures. ==================================== This is a scripted bug report about ADT failures while running linux tests for linux/4.15.0-149.153 on bionic. Whether this is caused by the dep8 tests of the tested source or the kernel has yet to be determined. Testing failed on: i386: https://autopkgtest.ubuntu.com/results/autopkgtest-bionic/bionic/i386/l/linux/20210702_010055_445cd@/log.gz 03:37:02 DEBUG| [stdout] selftests: test_bpf.sh 03:37:02 DEBUG| [stdout] ======================================== 03:37:03 ERROR| [stderr] Segmentation fault 03:37:03 DEBUG| [stdout] test_bpf: [FAIL] 03:37:03 DEBUG| [stdout] not ok 1..8 selftests: test_bpf.sh [FAIL] 03:37:03 DEBUG| [stdout] selftests: netdevice.sh 03:37:03 DEBUG| [stdout] ======================================== To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1934414/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
