[gem5-users] request to allocate mask for invalid number: Invalid argument

[Pedro Becker via gem5-users]

Hi all, 

I'm using gem5 to run a multithreaded & multicore application compiled for ARM 
(aarch64).
My application under test is also dynamically compiled. I provide the 
--interpr-dir and --redirects flags to se.py so it can find the interpreter and 
libraries.
I'm able to successfully run a simple/toy multithreaded application with this 
setup.

However, when I move on to a more complex application (dependent on more 
libraries, etc) I'm facing the following error:

warn: ignoring syscall mprotect(...)
warn: ignoring syscall set_robust_list(...)
warn: ignoring syscall rt_sigaction(...)
warn: ignoring syscall rt_sigaction(...)
warn: ignoring syscall rt_sigprocmask(...)
      (further warnings will be suppressed)
warn: ignoring syscall get_mempolicy(...)
warn: ignoring syscall sched_getaffinity(...)
warn: fcntl64(3, 3) passed through to host
sysconf(NPROCESSORS_CONF) failed: No such file or directory
warn: fcntl64(3, 3) passed through to host
request to allocate mask for invalid number: Invalid argument
Exiting @ tick 395657918000 because exiting with last active thread context
Simulated exit code not 0! Exit code is 1

Observations:
  * I modified src/arch/arm/linux/process.cc to set "get_mempolicy" syscall as 
ignoreFunc. I was having an 'unimplemented' error prior to that, and I thought 
it was safe to do it because that's what is done in  the counterpart x86 file 
src/arch/x86/linux/process.cc 
  * I also modified the said code to be as simple as a
     std::cout << "hello" << std::endl; 
  in the main function, and removed all remaining source code (but kept the 
linked libraries when compiling). The error persists.
 I hence believe it has something to do with loading the libraries or 
environment preparation on gem5.

There are previous threads about it but they are 3 years and were not very 
helpful for my case.

Any suggestions?
Thank you very much!

Cheers, 
Pedro.
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