WARNING: at arch/x86/kernel/cpu/perf_event_amd.c:701 amd_pmu_init+0x181/0x1f2()

Issue

• Below traces are observed in log messages:

Oct 28 18:04:03  kernel: WARNING: at arch/x86/kernel/cpu/perf_event_amd.c:701 amd_pmu_init+0x181/0x1f2() (Not tainted)
Oct 28 18:04:03  kernel: Hardware name: VMware Virtual Platform
Oct 28 18:04:03  kernel: Odd, counter constraints enabled but no core perfctrs detected!
Oct 28 18:04:03  kernel: Modules linked in:
Oct 28 18:04:03 kernel: Pid: 1, comm: swapper Not tainted 2.6.32-504.el6.x86_64 #1
Oct 28 18:04:03  kernel: Call Trace:
Oct 28 18:04:03  kernel: [<ffffffff81074df7>] ? warn_slowpath_common+0x87/0xc0
Oct 28 18:04:03  kernel: [<ffffffff81c34f3a>] ? init_hw_perf_events+0x0/0x4bb
Oct 28 18:04:03  kernel: [<ffffffff81074ee6>] ? warn_slowpath_fmt+0x46/0x50
Oct 28 18:04:03  kernel: [<ffffffff81c35576>] ? amd_pmu_init+0x181/0x1f2
Oct 28 18:04:03  kernel: [<ffffffff81c34f79>] ? init_hw_perf_events+0x3f/0x4bb
Oct 28 18:04:03  kernel: [<ffffffff81c34f3a>] ? init_hw_perf_events+0x0/0x4bb
Oct 28 18:04:03  kernel: [<ffffffff8100204c>] ? do_one_initcall+0x3c/0x1d0
Oct 28 18:04:03  kernel: [<ffffffff81c2a762>] ? kernel_init+0x119/0x2f7
Oct 28 18:04:03  kernel: [<ffffffff8100c20a>] ? child_rip+0xa/0x20
Oct 28 18:04:03  kernel: [<ffffffff81c2a649>] ? kernel_init+0x0/0x2f7
Oct 28 18:04:03  kernel: [<ffffffff8100c200>] ? child_rip+0x0/0x20
Oct 28 18:04:03  kernel: ---[ end trace a7919e7f17c0a725 ]---

For the warning " WARNING: at arch/x86/kernel/cpu/perf_event_amd.c:701 amd_pmu_init+0x181/0x1f2() (Not tainted)