Hi, Ming Lei's scsi-stress-remove test found a bug in blkg destruction [1] where bios being created when the request_queue was being cleaned up threw a NPE in blkg association. The fix is currently being discussed in [2]. To make this test more accessible, I've ported it to blktests with Ming Lei's copyright. I've tested this in my qemu instance and verified we do not see the NPE on a fixed kernel. Ming, please let me know if you have any objections. [1] https://lore.kernel.org/linux-block/CACVXFVO_QXipD3cmPvpLyBYSiEcWPN_ThQ=0pO9AwLqN-Lv93w@xxxxxxxxxxxxxx [2] https://lore.kernel.org/lkml/20181211230308.66276-1-dennis@xxxxxxxxxx/ This patchset is ontop of osandov#josef ad08c1fe0d9f. diffstats below: Dennis Zhou (2): blktests: split out cgroup2 controller and file check blktests: add Ming Lei's scsi-stress-remove common/cgroup | 18 ++++++--- tests/block/022 | 96 +++++++++++++++++++++++++++++++++++++++++++++ tests/block/022.out | 2 + 3 files changed, 111 insertions(+), 5 deletions(-) create mode 100755 tests/block/022 create mode 100644 tests/block/022.out Thanks, Dennis
