Hello folks,
I recently pick up the implementation of arch_align_stack() from x86
architectures to make it available for mips.
But now I just realised that this function seems useless because of
the way it's used.
Currently, this function seems to be only used to randomize the stack
pointer inside a page during an execve() syscall. Only i386, x86_64
and recently mips do that. Here is the code taken from exec.c which
calls it:
int setup_arg_pages(struct linux_binprm *bprm,
unsigned long stack_top,
int executable_stack)
{
[...]
stack_top = arch_align_stack(stack_top);
stack_top = PAGE_ALIGN(stack_top);
[...]
}
Since PAGE_ALIGN() is called right after arch_align_stack(), it seems
to me that the call to the latter function is useless...
Am I missing something ?
thanks
Franck
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