From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754475Ab0GID0e (ORCPT ); Thu, 8 Jul 2010 23:26:34 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:47199 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751573Ab0GID0d (ORCPT ); Thu, 8 Jul 2010 23:26:33 -0400 X-Authority-Analysis: v=1.1 cv=iR3a2x+wy8z+UqYHl7KFtKHYySPA0Tf/DXXAzrkvAHo= c=1 sm=0 a=zNANCjgXmV0A:10 a=7U3hwN5JcxgA:10 a=Q9fys5e9bTEA:10 a=gMqfjgEr1zLu/65IO0LwxA==:17 a=dVnW2BUVe_ivXlVLOmYA:9 a=Xo0_Fc1M0_NHljGtE5tc0V688xAA:4 a=PUjeQqilurYA:10 a=gMqfjgEr1zLu/65IO0LwxA==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.67.89.75 Subject: Re: 2.6.35 regression From: Steven Rostedt Reply-To: rostedt@goodmis.org To: Zeev Tarantov Cc: linux-kernel@vger.kernel.org, Andrew Morton , "Rafael J. Wysocki" , Maciej Rutecki , Frederic Weisbecker In-Reply-To: References: <20100708132237.GA22830@goodmis.org> Content-Type: text/plain; charset="ISO-8859-15" Organization: Kihon Technologies Inc. Date: Thu, 08 Jul 2010 23:26:29 -0400 Message-ID: <1278645989.1537.133.camel@gandalf.stny.rr.com> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2010-07-08 at 21:53 +0300, Zeev Tarantov wrote: > With gcc 4.5.1 rev. 161655 objdump shows: > Disassembly of section .data: > > ffffffff8173c438 <__start_syscalls_metadata>: > ... > > ffffffff8173c440 <__syscall_meta__mmap>: > ffffffff8173c440: 2b ab 5f 81 ff ff sub -0x7ea1(%rbx),%ebp Yeah, this is definitely the issue. It starts off at ffffffff8173c438, when the first item is really at ffffffff8173c440. Can you try this patch out: -- Steve diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 7f614ce..13ebb54 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -124,7 +124,8 @@ extern struct trace_event_functions enter_syscall_print_funcs; extern struct trace_event_functions exit_syscall_print_funcs; #define SYSCALL_TRACE_ENTER_EVENT(sname) \ - static struct syscall_metadata __syscall_meta_##sname; \ + static struct syscall_metadata \ + __attribute__((__aligned__(4))) __syscall_meta_##sname; \ static struct ftrace_event_call \ __attribute__((__aligned__(4))) event_enter_##sname; \ static struct ftrace_event_call __used \ @@ -138,7 +139,8 @@ extern struct trace_event_functions exit_syscall_print_funcs; } #define SYSCALL_TRACE_EXIT_EVENT(sname) \ - static struct syscall_metadata __syscall_meta_##sname; \ + static struct syscall_metadata \ + __attribute__((__aligned__(4))) __syscall_meta_##sname; \ static struct ftrace_event_call \ __attribute__((__aligned__(4))) event_exit_##sname; \ static struct ftrace_event_call __used \