fe03f7a37fd0ef05149161f6b95a25493e1fe38f

Opensuse tumbleweed

Steps to reproduce:

```
./test/functional/wallet_backup.py --descriptors
{
        allowed_syscalls.insert(__NR_arch_prctl); 
        allowed_syscalls.insert(__NR_prctl);      
    }
    void AllowProcessStartOrDeath()
    {
        allowed_syscalls.insert(__NR_clone);      
        allowed_syscalls.insert(__NR_clone3);     
        allowed_syscalls.insert(__NR_exit);       
        allowed_syscalls.insert(__NR_exit_group); 
        allowed_syscalls.insert(__NR_fork);       
        allowed_syscalls.insert(__NR_tgkill);     
        allowed_syscalls.insert(__NR_wait4);      
    }
    void AllowScheduling()
    {
        allowed_syscalls.insert(__NR_sched_getaffinity);  
        allowed_syscalls.insert(__NR_sched_getparam);     
        allowed_syscalls.insert(__NR_sched_getscheduler); 
        allowed_syscalls.insert(__NR_sched_setscheduler); 
        allowed_syscalls.insert(__NR_sched_yield);        
    }
    void AllowSignalHandling()
    {
        allowed_syscalls.insert(__NR_rt_sigaction);   
        allowed_syscalls.insert(__NR_rt_sigprocmask); 
        allowed_syscalls.insert(__NR_rt_sigreturn);   
        allowed_syscalls.insert(__NR_sigaltstack);    
    }
    void AllowSleep()