Julia Bus Error after wake-up from sleep on linux

General Usage
1

I run Julia on a Linux machine, the machine has NFS home directories with kerberos security. I have no idea if that is relevant but I mention it because it’s non-standard.

Pretty consistently after waking my computer up in the morning, if I type anything at all into the terminal where Julia was running, it gives Bus Error and dies.

Can anyone reproduce this? I’d be happy to file a bug report but would like more info than “under some conditions Julia gives a Bus Error” so it’d be good if someone else could reproduce.

This is Julia 1.17.0-rc3

2

Here’s what this looks like. A Julia session was running since last night. This morning after waking my machine I typed 1 and enter and immediately after enter I get a Bus error.

julia> 1
Bus error

If anyone has suggestions of what would help to debug this, I’ll happily try stuff. For example is there some debugger I should run Julia within to see what causes the bus error? Instructions would be welcome.

3

Well, just running Julia in gdb and waiting has failed to reproduce the bug. perhaps it requires that I actually do some computations. sigh

4

And now… even though it’s running through gdb I get:

julia> 1
1

julia> lBus error

So evidently does this mean gdb itself bus errored, because it didn’t trap the error?

5

Bus error is a certainly a possible symptom of a program running off a NFS mount and losing internet connection. It is why programs should not be run on NFS mounts, if that is of any help

6

In GNU Guix, running software stored in NFS is standard practice.

7

Fair enough, I should more precisely have said it is why programs should not be run on NFS mounts unless you are running a cluster which has reliable internal networking and does not experience service outages (such as computers getting put to sleep)

8

You think it’s the fact that Julia and the sysimage themselves are on the NFS mount? Because for example shells left open for days don’t bus error. I could move Julia and the sysimage to the local drive.

This wouldn’t explain why gdb failed to catch the bus error since it was running off the local drive.