On Fri, Aug 19, 2016 at 4:19 AM, Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx> wrote: > > Hi Dan, > > Recently, Redhat reported that nvml test suite failed on QEMU/KVM, > more detailed info please refer to: > https://bugzilla.redhat.com/show_bug.cgi?id=1365721 > > The reason for this bug is that the memory region created by mmap() > on the dax-based file was gone so that the region can not be found > in /proc/self/smaps during the runtime. > > This is a simple way to trigger this issue: > mount -o dax /dev/pmem0 /mnt/pmem/ > vim /mnt/pmem/xxx > then 'vim' is crashed due to segment fault. > > This bug can be reproduced on your tree, the top commit is > 10d7902fa0e82b (dax: unmap/truncate on device shutdown), the kernel > configure file is attached. > > Your thought or comment is highly appreciated. I'm going to be offline until Tuesday, but I will investigate when I'm back. In the meantime if Ross or Vishal had an opportunity to take a look I wouldn't say "no" :). -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
