From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: Re: WARNING: at arch/x86/kernel/smp.c:119 native_smp_send_reschedule+0x25/0x43() Date: Fri, 1 Jun 2012 15:36:08 +0200 Message-ID: <20120601133607.GA5519@x1.osrc.amd.com> References: <1328900283.25989.45.camel@laptop> <1328900633.25989.47.camel@laptop> <20120210200250.GG5650@redhat.com> <1328905121.25989.52.camel@laptop> <20120210203117.GI5650@redhat.com> <1328906163.25989.59.camel@laptop> <20120210210423.GJ5650@redhat.com> <20120323132648.GA18218@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Cc: Don Zickus , Sasha Levin , Peter Zijlstra , "Srivatsa S. Bhat" , Josh Boyer , "H. Peter Anvin" , Ingo Molnar , Thomas Gleixner , Avi Kivity , kvm , linux-kernel , x86 , Suresh B Siddha , Sergey Senozhatsky To: Tony Luck Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On Thu, Apr 05, 2012 at 01:38:41PM -0700, Tony Luck wrote: > A plain v3.3 kernel hits this when I just type "reboot" on a 32 cpu (2 > socket * 8 core * 2 HT) system: Same here on latest linus on a 24 CPU box right before the box reboots: [ 6851.207504] ------------[ cut here ]------------ [ 6851.212340] WARNING: at arch/x86/kernel/smp.c:123 native_smp_send_reschedule+0x2a/0x56() [ 6851.220727] Hardware name: Dinar [ 6851.224096] Modules linked in: kvm_amd kvm radeon microcode ttm drm_kms_helper hwmon amd64_edac_mod e1000e ohci_hcd backlight cfbcopyarea cfbimgblt cfbfillrect ehci_hcd edac_core [ 6851.240585] Pid: 23976, comm: reboot Tainted: G W 3.4.0+ #15 [ 6851.247351] Call Trace: [ 6851.249895] [] warn_slowpath_common+0x85/0x9d [ 6851.256753] [] warn_slowpath_null+0x1a/0x1c [ 6851.262801] [] native_smp_send_reschedule+0x2a/0x56 [ 6851.269573] [] trigger_load_balance+0x1ed/0x21a [ 6851.275983] [] scheduler_tick+0xe9/0xf2 [ 6851.281671] [] update_process_times+0x67/0x77 [ 6851.287900] [] tick_sched_timer+0x72/0x91 [ 6851.293769] [] __run_hrtimer+0xc3/0x17f [ 6851.299456] [] ? tick_nohz_handler+0xd1/0xd1 [ 6851.305593] [] hrtimer_interrupt+0xd4/0x197 [ 6851.311642] [] smp_apic_timer_interrupt+0x86/0x99 [ 6851.325636] [] apic_timer_interrupt+0x6c/0x80 [ 6851.339424] [] ? delay_tsc+0x23/0x50 [ 6851.353034] [] __delay+0xf/0x11 [ 6851.365561] [] __const_udelay+0x29/0x2b [ 6851.378817] [] native_stop_other_cpus+0x78/0x13d [ 6851.392924] [] native_machine_shutdown+0x53/0x6a [ 6851.406992] [] machine_shutdown+0xf/0x11 [ 6851.420438] [] native_machine_restart+0x25/0x37 [ 6851.434580] [] machine_restart+0xf/0x11 [ 6851.448039] [] kernel_restart+0x4e/0x52 [ 6851.461517] [] sys_reboot+0x151/0x187 [ 6851.474818] [] ? mntput_no_expire+0x31/0x105 [ 6851.488748] [] ? mntput+0x2a/0x2c [ 6851.501659] [] ? fput+0x1e0/0x1ef [ 6851.514551] [] ? trace_hardirqs_on_thunk+0x3a/0x3c [ 6851.529021] [] system_call_fastpath+0x16/0x1b [ 6851.543148] ---[ end trace 4eaa2a86a8e2da24 ]--- -- Regards/Gruss, Boris.