From: "Huang\, Ying" <ying.huang@intel.com> To: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org>, <lkp@01.org>, LKML <linux-kernel@vger.kernel.org> Subject: Re: [LKP] [lkp] [x86, perf] 7aba70e47c: BUG: unable to handle kernel paging request at 696d2f62 Date: Fri, 20 Nov 2015 08:38:24 +0800 [thread overview] Message-ID: <87oaepo67z.fsf@yhuang-dev.intel.com> (raw) In-Reply-To: <20151119191803.GB8802@tassilo.jf.intel.com> (Andi Kleen's message of "Thu, 19 Nov 2015 11:18:03 -0800") Hi, Andi, Andi Kleen <ak@linux.intel.com> writes: > On Wed, Nov 18, 2015 at 05:27:42PM +0100, Peter Zijlstra wrote: >> On Wed, Nov 18, 2015 at 02:33:00PM +0800, kernel test robot wrote: >> > FYI, we noticed the below changes on >> > >> > https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git perf/core >> > commit 7aba70e47ca4e961acb5af96d5127e3fad651c7c ("x86, perf: Optimize stack walk user accesses") >> >> Of course, that commit no longer exists. I re-create the tree every time >> I push it, this means that if you report something a few days later, its >> highly likely its against non-existant commits :/ >> >> > [ 21.984049] BUG: unable to handle kernel paging request at 696d2f62 >> > [ 21.986759] IP: [<4110c023>] perf_prepare_sample+0xcc/0x51d >> > [ 21.987859] *pdpt = 0000000001a93001 *pde = 0000000000000000 >> > [ 21.988015] Oops: 0000 [#1] PREEMPT >> > [ 21.988015] Modules linked in: >> > [ 21.988015] CPU: 0 PID: 496 Comm: trinity-main Not tainted 4.3.0-01147-g7aba70e #1 >> >> That doesn't actually look like something the fingered patch touches. >> And seeing how its trinity triggering it, I suspect bisection fail. > > Ok. I assume it's not caused by my patch. Let me know if that is wrong. Sorry about false positive. > I also pushed the patch before to my tree (which is 0day tested) and there > was no such report (but of course trinity is somewhat random). > > BTW if you're going to test trinity for perf it may be better to use > Vince Weaver's version here > > https://github.com/deater/perf_event_tests > > which has more coverage for perf than normal trinity. Thanks for your information. We will integrate it into 0day tests. Best Regards, Huang, Ying
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From: Huang, Ying <ying.huang@intel.com> To: lkp@lists.01.org Subject: Re: [x86, perf] 7aba70e47c: BUG: unable to handle kernel paging request at 696d2f62 Date: Fri, 20 Nov 2015 08:38:24 +0800 [thread overview] Message-ID: <87oaepo67z.fsf@yhuang-dev.intel.com> (raw) In-Reply-To: <20151119191803.GB8802@tassilo.jf.intel.com> [-- Attachment #1: Type: text/plain, Size: 1764 bytes --] Hi, Andi, Andi Kleen <ak@linux.intel.com> writes: > On Wed, Nov 18, 2015 at 05:27:42PM +0100, Peter Zijlstra wrote: >> On Wed, Nov 18, 2015 at 02:33:00PM +0800, kernel test robot wrote: >> > FYI, we noticed the below changes on >> > >> > https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git perf/core >> > commit 7aba70e47ca4e961acb5af96d5127e3fad651c7c ("x86, perf: Optimize stack walk user accesses") >> >> Of course, that commit no longer exists. I re-create the tree every time >> I push it, this means that if you report something a few days later, its >> highly likely its against non-existant commits :/ >> >> > [ 21.984049] BUG: unable to handle kernel paging request at 696d2f62 >> > [ 21.986759] IP: [<4110c023>] perf_prepare_sample+0xcc/0x51d >> > [ 21.987859] *pdpt = 0000000001a93001 *pde = 0000000000000000 >> > [ 21.988015] Oops: 0000 [#1] PREEMPT >> > [ 21.988015] Modules linked in: >> > [ 21.988015] CPU: 0 PID: 496 Comm: trinity-main Not tainted 4.3.0-01147-g7aba70e #1 >> >> That doesn't actually look like something the fingered patch touches. >> And seeing how its trinity triggering it, I suspect bisection fail. > > Ok. I assume it's not caused by my patch. Let me know if that is wrong. Sorry about false positive. > I also pushed the patch before to my tree (which is 0day tested) and there > was no such report (but of course trinity is somewhat random). > > BTW if you're going to test trinity for perf it may be better to use > Vince Weaver's version here > > https://github.com/deater/perf_event_tests > > which has more coverage for perf than normal trinity. Thanks for your information. We will integrate it into 0day tests. Best Regards, Huang, Ying
next prev parent reply other threads:[~2015-11-20 0:38 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-11-18 6:33 [lkp] [x86, perf] 7aba70e47c: BUG: unable to handle kernel paging request at 696d2f62 kernel test robot 2015-11-18 6:33 ` kernel test robot 2015-11-18 16:27 ` [lkp] " Peter Zijlstra 2015-11-18 16:27 ` Peter Zijlstra 2015-11-19 0:38 ` [lkp] " Huang, Ying 2015-11-19 0:38 ` Huang, Ying 2015-11-19 11:14 ` [lkp] " Peter Zijlstra 2015-11-19 11:14 ` Peter Zijlstra 2015-11-20 0:45 ` [lkp] " Huang, Ying 2015-11-20 0:45 ` Huang, Ying 2015-11-19 19:18 ` [lkp] " Andi Kleen 2015-11-19 19:18 ` Andi Kleen 2015-11-20 0:38 ` Huang, Ying [this message] 2015-11-20 0:38 ` Huang, Ying
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