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>


-- 
ldv