Actually, this bug does not reproduce on everyrun. In order to validate you'll have to run the test a few times. Moreover, seems that ZZ lpars are easier to reproduce this.
Last, this patch fixes this bug: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=3337bf41e0dd70b4064cdf60acdfcdc2d050066c -- 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/1830151 Title: ebb: cycles_test in powerpc from ubuntu_kernel_selftests failed on B-hwe P9 Status in ubuntu-kernel-tests: Fix Released Status in linux package in Ubuntu: Fix Released Bug description: This test has passed with Cosmic kernel on the same node ("baltar"), but not with the 4.18 kernel on Bionic. selftests: ebb: cycles_test ======================================== test: cycles tags: git_version:unknown EBB Handler is at 0x10004170 ebb_state: ebb_count = 10 spurious = 0 negative = 0 no_overflow = 0 pmc[1] count = 0x28000043f pmc[2] count = 0x0 pmc[3] count = 0x0 pmc[4] count = 0x0 pmc[5] count = 0x0 pmc[6] count = 0x0 HW state: MMCR0 0x0000000084000000 FC PMAE MMCR2 0x0000000000000000 EBBHR 0x0000000010004170 BESCR 0x8000000000000000 GE PMC1 0x0000000040000000 PMC2 0x0000000000000000 PMC3 0x0000000000000000 PMC4 0x0000000000000000 PMC5 0x0000000000028b3f PMC6 0x000000000002ac80 SIAR 0x00000000100035d4 Trace buffer dump: address 0x71a628a20000 tail 0x71a628a201f6 size 1048576 overflow false Content: [0]: counter = 1 [1]: register SPRN_MMCR0 = 0x0000000080000080 [2]: register SPRN_PMC1 = 0x0000000080000004 [3]: counter = 2 [4]: register SPRN_MMCR0 = 0x0000000080000080 [5]: register SPRN_PMC1 = 0x0000000080000004 [6]: counter = 3 [7]: register SPRN_MMCR0 = 0x0000000080000080 [8]: register SPRN_PMC1 = 0x0000000080000004 [FAIL] Test FAILED on line 52 [9]: counter = 4 [10]: register SPRN_MMCR0 = 0x0000000080000080 [11]: register SPRN_PMC1 = 0x0000000080000004 [12]: counter = 5 [13]: register SPRN_MMCR0 = 0x0000000080000080 [14]: register SPRN_PMC1 = 0x0000000080000004 [15]: counter = 6 [16]: register SPRN_MMCR0 = 0x0000000080000080 [17]: register SPRN_PMC1 = 0x0000000080000004 [18]: counter = 7 [19]: register SPRN_MMCR0 = 0x0000000080000080 [20]: register SPRN_PMC1 = 0x0000000080000004 [21]: counter = 8 [22]: register SPRN_MMCR0 = 0x0000000080000080 [23]: register SPRN_PMC1 = 0x0000000080000004 [24]: counter = 9 [25]: register SPRN_MMCR0 = 0x0000000080000080 [26]: register SPRN_PMC1 = 0x0000000080000004 [27]: counter = 10 [28]: register SPRN_MMCR0 = 0x0000000080000080 [29]: register SPRN_PMC1 = 0x0000000080000004 [30]: register SPRN_PMC1 = 0x0000000040000417 PMC1 count (0x28000043f) above upper limit 0x2800003e8 (+0x57) failure: cycles not ok 1..3 selftests: ebb: cycles_test [FAIL] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1830151/+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
