GNOME desktop on nvidia crashes when exiting nsenter

[Alan Pope 🍺🐧🐱 🦄]

(zyga asked me to file this after a conversation on irc)
https://irclogs.ubuntu.com/2018/10/23/%23snappy.html#t11:00

In one terminal.
udevadm trigger; udevadm settle --timeout=10

In another
sudo nsenter -m/run/snapd/ns/gnome-calculator.mnt

press CTRL+D twice to exit nsenter.
Desktop explodes.

System details

alan@hal:~$ snap version
snap 2.35.4
snapd 2.35.4
series 16
ubuntu 18.04
kernel 4.15.0-36-generic

alan@hal:~$ lspci | grep VGA
01:00.0 VGA compatible controller: NVIDIA Corporation GM204M [GeForce GTX 980M] (rev a1)

alan@hal:~$ sudo lshw -c video
[sudo] password for alan:
  *-display
       description: VGA compatible controller
       product: GM204M [GeForce GTX 980M]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:136 memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:c0000-dffff

alan@hal:~$ modinfo nvidia
filename: /lib/modules/4.15.0-36-generic/updates/dkms/nvidia.ko
alias: char-major-195-*
version: 390.48
supported: external
license: NVIDIA
srcversion: FA33B00C00A6F70EC9CF314
alias: pci:v000010DEd00000E00sv*sd*bc04sc80i00*
alias: pci:v000010DEd*sv*sd*bc03sc02i00*
alias: pci:v000010DEd*sv*sd*bc03sc00i00*
depends: ipmi_msghandler
retpoline: Y
name: nvidia
vermagic: 4.15.0-36-generic SMP mod_unload
parm: NVreg_Mobile:int
parm: NVreg_ResmanDebugLevel:int
parm: NVreg_RmLogonRC:int
parm: NVreg_ModifyDeviceFiles:int
parm: NVreg_DeviceFileUID:int
parm: NVreg_DeviceFileGID:int
parm: NVreg_DeviceFileMode:int
parm: NVreg_UpdateMemoryTypes:int
parm: NVreg_InitializeSystemMemoryAllocations:int
parm: NVreg_UsePageAttributeTable:int
parm: NVreg_MapRegistersEarly:int
parm: NVreg_RegisterForACPIEvents:int
parm: NVreg_CheckPCIConfigSpace:int
parm: NVreg_EnablePCIeGen3:int
parm: NVreg_EnableMSI:int
parm: NVreg_TCEBypassMode:int
parm: NVreg_UseThreadedInterrupts:int
parm: NVreg_EnableStreamMemOPs:int
parm: NVreg_EnableBacklightHandler:int
parm: NVreg_EnableUserNUMAManagement:int
parm: NVreg_EnableIBMNPURelaxedOrderingMode:int
parm: NVreg_MemoryPoolSize:int
parm: NVreg_IgnoreMMIOCheck:int
parm: NVreg_RegistryDwords:charp
parm: NVreg_RegistryDwordsPerDevice:charp
parm: NVreg_RmMsg:charp
parm: NVreg_AssignGpus:charp

[Jean-Baptiste Lallement (jibel)]

Can you please attach the journal when this issue happens? Thanks.

[Alan Pope 🍺🐧🐱 🦄 (popey)]

This may be the journal from that run..

http://paste.ubuntu.com/p/jcqYz593px/