From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Luming Yu" Date: Tue, 03 Jun 2008 06:04:39 +0000 Subject: Re: [RFC PATCH] set TASK_TRACED before arch_ptrace code to fix a race Message-Id: <3877989d0806022304w35764b17p9d4c3c95eceae0f5@mail.gmail.com> List-Id: References: <3877989d0805211947i54bacc7cv619541e9b40824fb@mail.gmail.com> <20080523041940.39E8726FA24@magilla.localdomain> <3877989d0805222224n77ce36b6wdf15c4bab330a0f8@mail.gmail.com> <20080526001527.81E1126FA9E@magilla.localdomain> <3877989d0805251830w70f19e4cu46fbc32148217749@mail.gmail.com> <3877989d0805262031i29db16bcjfa31652afc746b49@mail.gmail.com> <20080527040454.053C526FA9E@magilla.localdomain> <3877989d0805262249yab130cbyfc5f5e54065cec5c@mail.gmail.com> <20080527061209.9A24426FAA6@magilla.localdomain> <1211869515.29836.2.camel@elijah.suse.cz> In-Reply-To: <1211869515.29836.2.camel@elijah.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: Petr Tesarik Cc: Roland McGrath , LKML , linux-ia64@vger.kernel.org On Tue, May 27, 2008 at 2:25 PM, Petr Tesarik wrote: > On Mon, 2008-05-26 at 23:12 -0700, Roland McGrath wrote: >> > [] skip_rbs_switch+0xe0/0x110 >> > sp=E000000141c9fe30 bsp=E000000141c90c= f8 >> > [] __kernel_syscall_via_break+0x0/0x20 >> > sp=E000000141ca0000 bsp=E000000141c90c= f8 > > Indeed, there seems to be a large hole here. So, this is either a bug in > the unwinder, or a bug in the RBS synchronization, which causes > corruption. My test machine currently needs some work to run 2.6.25 > again, but I'll try your test case as soon as I re-install it later this > week. Just want to check if the test case works for you?