Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753698AbbFLSgu (ORCPT ); Fri, 12 Jun 2015 14:36:50 -0400 Received: from mail-qk0-f179.google.com ([209.85.220.179]:36633 "EHLO mail-qk0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751002AbbFLSgp (ORCPT ); Fri, 12 Jun 2015 14:36:45 -0400 From: Vince Weaver X-Google-Original-From: Vince Weaver Date: Fri, 12 Jun 2015 14:42:36 -0400 (EDT) To: Vince Weaver cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Stephane Eranian Subject: Re: perf: aux area related crash and warnings In-Reply-To: Message-ID: References: User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7063 Lines: 109 On Thu, 11 Jun 2015, Vince Weaver wrote: > and while I was trying to cut and paste that, the locked haswell just took > down the network switch so I can't get the rest until tomorrow. here are the full dumps if anyone is interested the warning is reproducible, the spinlock disaster is not. [36298.986117] BUG: spinlock recursion on CPU#4, perf_fuzzer/3410 [36298.992915] lock: 0xffff88011edf7cd0, .magic: dead4ead, .owner: perf_fuzzer/3410, .owner_cpu: 4 [36299.002919] CPU: 4 PID: 3410 Comm: perf_fuzzer Tainted: G W 4.1.0-rc7+ #155 [36299.012152] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014 [36299.020606] ffff88011edf7cd0 ffff88011eb059a0 ffffffff816d7229 0000000000000054 [36299.029199] ffff8800c2f4ac50 ffff88011eb059c0 ffffffff810c2895 ffff88011edf7cd0 [36299.037796] ffffffff81a1e481 ffff88011eb059e0 ffffffff810c2916 ffff88011edf7cd0 [36299.046338] Call Trace: [36299.049501] [] dump_stack+0x45/0x57 [36299.056284] [] spin_dump+0x85/0xe0 [36299.062282] [] spin_bug+0x26/0x30 [36299.068111] [] do_raw_spin_lock+0x13f/0x180 [36299.074897] [] _raw_spin_lock+0x39/0x40 [36299.081276] [] ? free_pcppages_bulk+0x39/0x620 [36299.088340] [] free_pcppages_bulk+0x39/0x620 [36299.095182] [] ? free_pages_prepare+0x3a4/0x550 [36299.102291] [] ? kfree_debugcheck+0x16/0x40 [36299.108987] [] free_hot_cold_page+0x178/0x1a0 [36299.115850] [] __free_pages+0x37/0x50 [36299.121991] [] rb_free_aux+0xba/0xf0 [36299.128034] [] perf_aux_output_end+0xb7/0xf0 [36299.134793] [] intel_bts_interrupt+0x8e/0xd0 [36299.141543] [] intel_pmu_handle_irq+0x4f/0x450 [36299.148482] [] ? check_chain_key+0x128/0x1e0 [36299.155249] [] perf_event_nmi_handler+0x2b/0x50 [36299.162273] [] nmi_handle+0xa0/0x150 [36299.168278] [] ? nmi_handle+0x5/0x150 [36299.174377] [] default_do_nmi+0x4a/0x140 [36299.180735] [] do_nmi+0x98/0xe0 [36299.186219] [] end_repeat_nmi+0x1e/0x2e [36299.192501] [] ? __lock_acquire.isra.31+0x27e/0x1000 [36299.199951] [] ? __lock_acquire.isra.31+0x27e/0x1000 [36299.207410] [] ? __lock_acquire.isra.31+0x27e/0x1000 [36299.214898] <> [] ? __lock_acquire.isra.31+0x3b9/0x1000 [36299.223222] [] lock_acquire+0xa5/0x130 [36299.229409] [] ? __rmqueue+0x109/0x510 [36299.235551] [] ? __rmqueue+0x109/0x510 [36299.241720] [] bad_range+0x6b/0x150 [36299.247612] [] ? __rmqueue+0x109/0x510 [36299.253757] [] ? perf_output_begin+0x5/0x270 [36299.260489] [] __rmqueue+0x109/0x510 [36299.266501] [] get_page_from_freelist+0x7e3/0xa50 [36299.273680] [] __alloc_pages_nodemask+0x1fb/0xa90 [36299.280872] [] ? alloc_pages_vma+0x10b/0x290 [36299.287586] [] ? __lock_acquire.isra.31+0x3b9/0x1000 [36299.295017] [] alloc_pages_vma+0x10b/0x290 [36299.301544] [] ? wp_page_copy.isra.51+0x84/0x4f0 [36299.308613] [] wp_page_copy.isra.51+0x84/0x4f0 [36299.315506] [] ? do_wp_page+0x84/0x6a0 [36299.321633] [] do_wp_page+0x9d/0x6a0 [36299.327533] [] ? handle_mm_fault+0x309/0x1770 [36299.334245] [] handle_mm_fault+0xdec/0x1770 [36299.340854] [] __do_page_fault+0x1b4/0x460 [36299.347337] [] trace_do_page_fault+0x3e/0xc0 [36299.354021] [] trace_page_fault+0x28/0x30 [36315.086708] ------------[ cut here ]------------ and [27716.785131] WARNING: CPU: 2 PID: 17655 at kernel/events/ring_buffer.c:282 perf_aux_output_begin+0x1ce/0x1f0() [27716.796157] Modules linked in: fuse x86_pkg_temp_thermal intel_powerclamp intel_rapl iosf_mbi coretemp kvm_intel kvm snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic snd_hda_intel snd_hda_controller crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec aesni_intel snd_hda_core aes_x86_64 iTCO_wdt lrw snd_hwdep gf128mul snd_pcm iTCO_vendor_support ppdev i915snd_timer glue_helper evdev ablk_helper snd cryptd mei_me mei psmouse pcspkr soundcore serio_raw lpc_ich drm_kms_helper parport_pc battery tpm_tis mfd_core parport drm video tpm i2c_i801 i2c_algo_bit wmi processor button sg sr_mod cdrom sd_mod ehci_pci ehci_hcd ahci libahci libata xhci_pci xhci_hcd e1000e ptp scsi_mod crc32c_intel usbcore pps_core usb_common thermal fan thermal_sys [27716.873350] CPU: 2 PID: 17655 Comm: perf_fuzzer Tainted: G W 4.1.0-rc7+ #155 [27716.882671] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014 [27716.891168] ffffffff81a230f2 ffff8800cf9afc68 ffffffff816d7229 0000000000000000 [27716.899782] 0000000000000000 ffff8800cf9afca8 ffffffff81072eba 000000000000cf80 [27716.908372] ffff880036d85a00 ffff88011ea8cf80 ffff880119106000 000000000000cf80 [27716.916981] Call Trace: [27716.920180] [] dump_stack+0x45/0x57 [27716.926250] [] warn_slowpath_common+0x8a/0xc0 [27716.933244] [] warn_slowpath_null+0x1a/0x20 [27716.939999] [] perf_aux_output_begin+0x1ce/0x1f0 [27716.947225] [] ? perf_event_update_userpage+0x5/0x170 [27716.954875] [] bts_event_add+0x6d/0x150 [27716.961259] [] event_sched_in.isra.85+0xfb/0x330 [27716.968495] [] group_sched_in+0xba/0x1e0 [27716.974957] [] ? native_sched_clock+0x2a/0x90 [27716.981888] [] ctx_sched_in+0x1d0/0x3f0 [27716.988274] [] perf_event_sched_in+0x69/0xa0 [27716.995082] [] perf_event_context_sched_in+0x90/0x160 [27717.002714] [] __perf_event_task_sched_in+0xa8/0xc0 [27717.010160] [] finish_task_switch+0xed/0x140 [27717.016988] [] ? __switch_to+0x263/0x5d0 [27717.023400] [] schedule_tail+0x11/0xa0 [27717.029652] [] ret_from_fork+0xf/0x70 [27717.035806] ---[ end trace bdbfeef5d81e5fa4 ]--- which corresponds to /* * Nesting is not supported for AUX area, make sure nested * writers are caught early */ if (WARN_ON_ONCE(local_xchg(&rb->aux_nest, 1))) goto err_put; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/