fe03f7a37fd0ef05149161f6b95a25493e1fe38f

Opensuse tumbleweed

Steps to reproduce:

```
./test/functional/wallet_backup.py --descriptors
{__NR_fchmodat, "fchmodat"},
    {__NR_fchown, "fchown"},
    {__NR_fchownat, "fchownat"},
    {__NR_fcntl, "fcntl"},
    {__NR_fdatasync, "fdatasync"},
    {__NR_fgetxattr, "fgetxattr"},
    {__NR_finit_module, "finit_module"},
    {__NR_flistxattr, "flistxattr"},
    {__NR_flock, "flock"},
    {__NR_fork, "fork"},
    {__NR_fremovexattr, "fremovexattr"},
    {__NR_fsetxattr, "fsetxattr"},
    {__NR_fstat, "fstat"},
    {__NR_fstatfs, "fstatfs"},
    {__NR_fsync, "fsync"},
    {__NR_ftruncate, "ftruncate"},
    {__NR_futex, "futex"},
    {__NR_futimesat, "futimesat"},
    {__NR_get_kernel_syms, "get_kernel_syms"},
    {__NR_get_mempolicy, "get_mempolicy"},
    {__NR_get_robust_list, "get_robust_list"},
    {__NR_get_thread_area, "get_thread_area"},
    {__NR_getcpu, "getcpu"},
    {__NR_getcwd, "getcwd"},
    {__NR_getdents, "getdents"},
    {__NR_getdents64, "getdents64"},
    {__NR_getegid, "getegid"},
    {__NR_geteuid, "geteuid"},
    {__NR_getgid, "getgid"},
    {__NR_getgroups, "getgroups"},