Le 05/03/2020 à 22:05, Tobias Koch a écrit : > If the address range starting at old_address overlaps with the stack guard it > is invalid and mremap must fail with EFAULT. The musl c library relies on this > behavior to detect the stack size, which it does by doing consecutive mremaps > until it hits the stack guard. Without this patch, software (such as the Ruby > interpreter) that calls pthread_getattr_np under musl will crash on 32 bit > targets emulated on a 64 bit host.
Could you share some pointers to the code that is doing this? We have already this kind of code in linux-user/elfload.c, setup_arg_pages(): could you check why it doesn't work? Thanks, Laurent
