CODEWITHSUNDEEP
javajvm
John Smith
John Smith

Reputation: 33

JVM: Can't detect initial thread stack location - find_vma failed

The compilation was successful
The multiplication should have been performed at compile time without any code being generated.
However, your solution generated the following code:
    Java HotSpot(TM) 64-Bit Server VM warning: Can't detect initial thread stack location - find_vma failed
        mov  ax,5
        mov  ax,6
        mul  ax
    [ the expected value was 30, but you calculated the result as 6 ]

I entered some code in my school's system and I got this error message. I don't understand the part where it says "The multiplication should have been performed at compile time without any code being generated.".

Anyone know what I might be doing wrong?

(I can't reveal the code I entered in it, because I don't want it showing up in a search engine. Is there a way I can privately show the code I entered in?)

Upvotes: 3

Views: 7750

Answers (5)

keelar
keelar

Reputation: 6026

I encountered the same problem in my chroot environment. As @chronospoon suggested, it is because java was unable to access the /proc filesystem.

However, the correct mounting command is the following (note that both proc does not prefixed by /), as mentioned in here:

mount -t proc none proc

To check whether the mounting is successful, just check whether the proc directory has any file.

Upvotes: 3

chronospoon
chronospoon

Reputation: 637

On my Ubuntu 10.04/64-bit system, java was unable to access the /proc filesystem. Specifically, I was running in a chroot which didn't have it mounted:

mount -t proc none /proc

Upvotes: 15

maaartinus
maaartinus

Reputation: 46482

The message "Can't detect initial thread stack location" is quite common, see e.g., here and here. The remaining part is strange, the assembly code is pure nonsense. I wouldn't care about that, it isn't your fault.

Upvotes: 1

OrangeDog
OrangeDog

Reputation: 38787

The Can't detect initial thread stack location suggests an incomplete or corrupt Java installation.

The stuff about multiplication at compile time doesn't look like it comes from Java, but instead from some sort of IDE or compilation tool that your school is using. Whatever this "school system" is, you need to ask whoever is responsible for it about these error messages.

Upvotes: 0

Stephen C
Stephen C

Reputation: 719309

I suspect that this is an artifact of the "school system" that you are using, which appears to be some framework for automating code testing.

  • The message looks system specific to me.
  • If the message is no system specific, it is a (arguably) a bug for a production application to be reporting obscure HotSpot errors to end users.

So, I think you should be asking the people who manage the system, and (presumably) understand what that message means.

Upvotes: 0

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