Re: [PATCH 3/6 v3] riscv: Fix syscall_get_arguments() and syscall_set_arguments()

[Steven Rostedt <rostedt@goodmis.org>]

On Thu, 4 Apr 2019 17:02:10 +0300
"Dmitry V. Levin" <ldv@altlinux.org> wrote:

> On Mon, Apr 01, 2019 at 09:41:07AM -0400, Steven Rostedt wrote:
> > From: "Dmitry V. Levin" <ldv@altlinux.org>
> > 
> > RISC-V syscall arguments are located in orig_a0,a1..a5 fields
> > of struct pt_regs.
> > 
> > Due to an off-by-one bug and a bug in pointer arithmetic
> > syscall_get_arguments() was reading s3..s7 fields instead of a1..a5.
> > Likewise, syscall_set_arguments() was writing s3..s7 fields
> > instead of a1..a5.
> > 
> > Link: http://lkml.kernel.org/r/20190329171221.GA32456@altlinux.org
> > 
> > Fixes: e2c0cdfba7f69 ("RISC-V: User-facing API")
> > Cc: Ingo Molnar <mingo@redhat.com>
> > Cc: Kees Cook <keescook@chromium.org>
> > Cc: Andy Lutomirski <luto@amacapital.net>
> > Cc: Will Drewry <wad@chromium.org>
> > Cc: Palmer Dabbelt <palmer@sifive.com>
> > Cc: Albert Ou <aou@eecs.berkeley.edu>
> > Cc: linux-riscv@lists.infradead.org
> > Cc: stable@vger.kernel.org # v4.15+
> > Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
> > Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>  
> 
> According to
> https://lore.kernel.org/lkml/mhng-8e9b547b-7fe3-43d2-9dea-b217de923605@palmer-si-x1c4/
> the following tag could be added to this patch:
>  
> Acked-by: Palmer Dabbelt <palmer@sifive.com>

That link isn't actually an ack. Palmer, you OK if I add it?

-- Steve