On Wed, Mar 25, 2015 at 10:18 AM, Denys Vlasenko <dvlas...@redhat.com> wrote: > The $AUDIT_ARCH_X86_64 parameter to syscall_trace_enter_phase1/2 > is a 32-bit constant, loading it with 32-bit MOV produces 5-byte insn > instead of 10-byte one.
Acked-by: Andy Lutomirski <l...@kernel.org> > > Signed-off-by: Denys Vlasenko <dvlas...@redhat.com> > CC: Linus Torvalds <torva...@linux-foundation.org> > CC: Steven Rostedt <rost...@goodmis.org> > CC: Ingo Molnar <mi...@kernel.org> > CC: Borislav Petkov <b...@alien8.de> > CC: "H. Peter Anvin" <h...@zytor.com> > CC: Andy Lutomirski <l...@amacapital.net> > CC: Oleg Nesterov <o...@redhat.com> > CC: Frederic Weisbecker <fweis...@gmail.com> > CC: Alexei Starovoitov <a...@plumgrid.com> > CC: Will Drewry <w...@chromium.org> > CC: Kees Cook <keesc...@chromium.org> > CC: x...@kernel.org > CC: linux-kernel@vger.kernel.org > --- > arch/x86/kernel/entry_64.S | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S > index 11b7339..23aa43e 100644 > --- a/arch/x86/kernel/entry_64.S > +++ b/arch/x86/kernel/entry_64.S > @@ -306,7 +306,7 @@ system_call_fastpath: > /* Do syscall entry tracing */ > tracesys: > movq %rsp, %rdi > - movq $AUDIT_ARCH_X86_64, %rsi > + movl $AUDIT_ARCH_X86_64, %esi > call syscall_trace_enter_phase1 > test %rax, %rax > jnz tracesys_phase2 /* if needed, run the slow path */ > @@ -317,7 +317,7 @@ tracesys: > tracesys_phase2: > SAVE_EXTRA_REGS > movq %rsp, %rdi > - movq $AUDIT_ARCH_X86_64, %rsi > + movl $AUDIT_ARCH_X86_64, %esi > movq %rax,%rdx > call syscall_trace_enter_phase2 > > -- > 1.8.1.4 > -- Andy Lutomirski AMA Capital Management, LLC -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
