Sent patch: https://lists.ubuntu.com/archives/kernel-
team/2021-June/121361.html
** Changed in: ubuntu-kernel-tests
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1897764
Title:
mem-on-off-test.sh from memory-hotplug in ubuntu_kernel_selftests
failed on X-gcp-4.15 / F-5.4 zVM
Status in ubuntu-kernel-tests:
In Progress
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Bionic:
Confirmed
Status in linux source package in Focal:
Confirmed
Status in linux source package in Groovy:
Confirmed
Bug description:
Issue found on Focal 5.4.0-49.53 zVM kernel04
Test failed with:
# selftests: memory-hotplug: mem-on-off-test.sh
# Test scope: 2% hotplug memory
# online all hot-pluggable memory in offline state:
# SKIPPED - no hot-pluggable memory in offline state
# offline 2% hot-pluggable memory in online state
# trying to offline 1 out of 16 memory block(s):
# online->offline memory0
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 0: unexpected fail
# online->offline memory1
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 1: unexpected fail
# online->offline memory10
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 10: unexpected fail
# online->offline memory11
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 11: unexpected fail
# online->offline memory12
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 12: unexpected fail
# online->offline memory13
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 13: unexpected fail
# online->offline memory14
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 14: unexpected fail
# online->offline memory15
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 15: unexpected fail
# online->offline memory2
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 2: unexpected fail
# online->offline memory3
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 3: unexpected fail
# online->offline memory4
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 4: unexpected fail
# online->offline memory5
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 5: unexpected fail
# online->offline memory6
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 6: unexpected fail
# online->offline memory7
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 7: unexpected fail
# online->offline memory8
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 8: unexpected fail
# online->offline memory9
# ./mem-on-off-test.sh: line 78: echo: write error: Device or resource busy
# offline_memory_expect_success 9: unexpected fail
# FAILED - unable to offline some memory blocks, device busy?
# online all hot-pluggable memory in offline state:
# SKIPPED - no hot-pluggable memory in offline state
# Test with memory notifier error injection
not ok 1 selftests: memory-hotplug: mem-on-off-test.sh # exit=1
This issue can be found on 5.4.0-46.50, 5.4.0-45.49 zVM as well.
Passed with 5.4.0-44.48
Passed with 5.4.0-43.47
Failed with 5.4.0-42.46
Looks like it's not very stable.
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