From: Peter Zijlstra <peterz@infradead.org>
To: Dave Jones <davej@redhat.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>
Cc: gorcunov@gmail.com
Subject: Re: perf code using smp_processor_id() in preemptible [00000000] code
Date: Fri, 15 Nov 2013 11:02:54 +0100 [thread overview]
Message-ID: <20131115100254.GC2965@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20131115032907.GA25243@redhat.com>
On Thu, Nov 14, 2013 at 10:29:07PM -0500, Dave Jones wrote:
> BUG: using smp_processor_id() in preemptible [00000000] code: trinity-main/890
> caller is p4_pmu_schedule_events+0x25/0x4c0
Whee, wherever did you dig up that dinosaur ;-)
> CPU: 0 PID: 890 Comm: trinity-main Not tainted 3.12.0+ #3
> Hardware name: Dell Inc. Precision WorkStation 470 /0P7996, BIOS A05 05/18/2005
> ffff88001e675668 ffff880025e79d00 ffffffff8171f332 0000000000000000
> ffff880025e79d18 ffffffff8133132a 0000000000000002 ffff880025e79dc0
> ffffffff81018e55 ffff88001e675668 00000000000080d0 ffff88001e675668
> Call Trace:
> [<ffffffff8171f332>] dump_stack+0x4e/0x7a
> [<ffffffff8133132a>] debug_smp_processor_id+0xca/0xe0
> [<ffffffff81018e55>] p4_pmu_schedule_events+0x25/0x4c0
> [<ffffffff811a5c9f>] ? kmem_cache_alloc_trace+0x12f/0x2d0
> [<ffffffff810160ff>] ? allocate_fake_cpuc+0x2f/0x90
> [<ffffffff81016443>] x86_pmu_event_init+0x193/0x440
> [<ffffffff81146850>] perf_init_event+0x250/0x330
> [<ffffffff81146600>] ? perf_pmu_unregister+0x160/0x160
> [<ffffffff81146ca8>] perf_event_alloc+0x378/0x420
> [<ffffffff81147335>] SYSC_perf_event_open+0x5e5/0xa80
> [<ffffffff81147b89>] SyS_perf_event_open+0x9/0x10
> [<ffffffff81731ee4>] tracesys+0xdd/0xe2
Hrmm, I'm not entire sure what we should do here; Cyrill, do you have
clue?
next prev parent reply other threads:[~2013-11-15 10:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-15 3:29 Dave Jones
2013-11-15 10:02 ` Peter Zijlstra [this message]
2013-11-15 10:19 ` Cyrill Gorcunov
2013-11-15 11:30 ` Cyrill Gorcunov
2013-11-15 11:51 ` Peter Zijlstra
2013-11-15 12:10 ` Cyrill Gorcunov
2013-11-15 12:33 ` Peter Zijlstra
2013-11-15 12:42 ` Cyrill Gorcunov
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