Duplicating my post to the fuse developer mailing list here: Hi all,
the kernel crash can be triggered if async direct IO is used which comes with Fuse 3.0_pre0 (i.e. current head). My workload was to install CentOS7 on a newly created qcow2 disk. The kernel (Fedora 21; 4.1.8-100.fc21.x86_64) crashed in 2/2 runs using qemu/kvm atop of ntfs- 3g built against fuse3: 1) Build fuse3 from current head 2) Build ntfs-3g against fuse3 (feel free to use the attached patch. It assumes that pkg-config is able to find fuse3, so install fuse3.pc in a PKG_CONFIG_PATH) 3) ntfs-3g: ./configure --with-fuse=external; make 4) "src/lowntfs-3g --version" should now print 'lowntfs-3g 2015.3.14 external FUSE 30' 5) create and mount an NTFS volume 6) create a VM disk: qemu-img create -f qcow2 disk.qcow2 20G 7) make sure that the VM actually uses async direct io (cache='none' io='native') In my case the kernel crashed around 12 minutes after the VM was started. Regards, Robert ** Patch added: "Patch to build ntfs-3g against fuse3" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1505948/+attachment/4505214/+files/ntfs3g-fuse3.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1505948 Title: Memory allocation failure crashes kernel hard, presumably related to FUSE To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1505948/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
