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SubjectRe: [PATCH] elf: don't hash userspace addresses
On Sat, May 05, 2018 at 09:31:50AM +0900, Tetsuo Handa wrote:
> Alexey Dobriyan wrote:
> > Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
> > ---
> >
> > 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 ?

Duh. There is no reason to use non-standard %px.

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