** Package changed: ubuntu => linux-hwe-edge (Ubuntu) ** Package changed: linux-hwe-edge (Ubuntu) => linux (Ubuntu)
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1700225 Title: Writing to GPT partition on NVM device triggers "Kernel BUG" Status in linux package in Ubuntu: Incomplete Bug description: When I try writing a large amount of data to a GPT partition on my NVM SSD using dd, after a second or so I get "kernel BUG" messages in dmesg, and the writing comes to a halt. The machine remains responsive and I can write to other disks, but if I run "sync", it hangs forever. The bug is 100 % repeatable. To replicate, run: dd if=/dev/zero of=/dev/nvme0n1p1 This happens only when I write more than 0.5-1.5 GiB to a GPT partition on the NVM device. The bug does not happen in the following cases: - writing just 500 MB on a GPT partition - writing to the raw device (/dev/nvme0n1) - writing to a DOS partition (i.e. when the NVM device is using a DOS style partition table) The device in question is a 1 TB Samsung 960 EVO M.2 SSD. Ubuntu release: 17.04 I have dmesg logs available of four instances of this happening, with very similar stack traces. I will be happy to experiment and provide any additional information you may need. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1700225/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
