linux-kernel - perf code using smp_processor_id() in preemptible [00000000] code

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Date:	Thu, 14 Nov 2013 22:29:07 -0500
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>
Subject: perf code using smp_processor_id() in preemptible [00000000] code

BUG: using smp_processor_id() in preemptible [00000000] code: trinity-main/890
caller is p4_pmu_schedule_events+0x25/0x4c0
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

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