Public bug reported: Description:
Patch: fix patch in the libnvdimm pending tree. Proposed fixes here: https://lists.01.org/pipermail/linux-nvdimm/2019-June/021847.html and pushed out to libnvdimm-pending: https://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm.git/log/?h=libnvdimm-pending Upstream Bug link: https://github.com/pmem/ndctl/issues/96 The problem is fairly easy to reproduce in as little as 10 minutes. Do the following in parallel, like in separate terminals. Example... in term #1, #3, #5, type while [1]; do ndctl create-namespace -m devdax -s 48G done in term #2, #4, #6, type while [1]; do ndctl destroy-namespace all -f done Even simple invocation will eventually lead to a panic, it can take hours though. Example... in term #1 run the script #/bin/bash while /bin/true do ndctl destroy-namespace -f all date for R in ndctl list -R | jq -r ".[] | .dev" do for i in {1..10} do ndctl create-namespace -r $R -s 8g -m devdax done done done in term #2 type while /bin/true; do ndctl list done Run that same terminal #1 script in 2 separate terminals, thereby creating 2 separate threads that will destroy/create will usually result in a panic within an hour. Target Kernel: 5.2 Target Release: 19.10 ** Affects: intel Importance: Critical Status: New ** Affects: ndctl (Ubuntu) Importance: Undecided Status: New ** Tags: intel-upkg-19.10 ** Also affects: ndctl (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1834119 Title: [AEP-BUG] Critical:concurrent invocations of ndctl can cause linux panic To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1834119/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
