Re: [PATCH] elf: don't hash userspace addresses
From: Tetsuo Handa
Date: Fri May 04 2018 - 20:32:17 EST
Alexey Dobriyan wrote:
> Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
> ---
>
> fs/binfmt_elf.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> --- a/fs/binfmt_elf.c
> +++ b/fs/binfmt_elf.c
> @@ -379,8 +379,8 @@ static unsigned long elf_map(struct file *filep, unsigned long addr,
>
> if ((type & MAP_FIXED_NOREPLACE) &&
> PTR_ERR((void *)map_addr) == -EEXIST)
> - pr_info("%d (%s): Uhuuh, elf segment at %px requested but the memory is mapped already\n",
> - task_pid_nr(current), current->comm, (void *)addr);
> + pr_info("%d (%s): Uhuuh, elf segment at %lx requested but the memory is mapped already\n",
> + task_pid_nr(current), current->comm, addr);
"%px" does not hash. For what reason you replace %px with %lx ?
>
> return(map_addr);
> }
>