From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754936Ab3GATpU (ORCPT ); Mon, 1 Jul 2013 15:45:20 -0400 Received: from mail-db9lp0249.outbound.messaging.microsoft.com ([213.199.154.249]:41161 "EHLO db9outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754061Ab3GATpR convert rfc822-to-8bit (ORCPT ); Mon, 1 Jul 2013 15:45:17 -0400 X-Forefront-Antispam-Report: CIP:70.37.183.190;KIP:(null);UIP:(null);IPV:NLI;H:mail.freescale.net;RD:none;EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zz1432Izz1f42h1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6hzzz2dh2a8h668h839h8e2h8e3h944hd25hf0ah1220h1288h12a5h12a9h12bdh137ah13b6h1441h1504h1537h153bh15d0h162dh1631h1758h18e1h1946h19b5h1ad9h1b0ah1d0ch1d2eh1d3fh1dfeh1dffh1e1dhbe9i1155h) From: Stehle Vincent-B46079 To: Thomas Gleixner CC: Stephen Boyd , "linux-next@vger.kernel.org" , John Stultz , "linux-kernel@vger.kernel.org" , Mark Rutland Subject: RE: next-20130627 breaks i.MX6 sabre sd UART console Thread-Topic: next-20130627 breaks i.MX6 sabre sd UART console Thread-Index: Ac5zZxBZeupdDlSIRDWI6ggVo3oJ5QAkUYcAAAf2xwAAAZFOUAAA2+yAABLhygAAdGeRAAAHHZgAAACKafAACWuggAACoBRA Date: Mon, 1 Jul 2013 19:45:09 +0000 Message-ID: References: <51CDB26A.9060500@codeaurora.org> <51CDC2B3.1030907@codeaurora.org> <20130629020738.GG11625@codeaurora.org> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.214.137.192] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thomas Gleixner [mailto:tglx@linutronix.de] (..) > Though that does not explain why dev->next_event is set to KTIME_MAX > after we installed the mxc_timer1 as the system clocksource. And we > really need to know why that happens. > > Here is some more debugging which should shine some light on that. ...and here is your log :) Best regards, V. Uncompressing Linux... done, booting the kernel. Booting Linux on physical CPU 0x0 Linux version 3.10.0-next-20130701+ (vstehle@debian) (gcc version 4.7.2 (Debian 4.7.2-5) ) #2 SMP Mon Jul 1 21:36:54 CEST 2013 CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache Machine: Freescale i.MX6 Quad/DualLite (Device Tree), model: Freescale i.MX6 Quad SABRE Smart Device Board bootconsole [earlycon0] enabled Memory policy: ECC disabled, Data cache writealloc On node 0 totalpages: 262144 free_area_init_node: node 0, pgdat 8078bd00, node_mem_map 807ea000 Normal zone: 2048 pages used for memmap Normal zone: 0 pages reserved Normal zone: 262144 pages, LIFO batch:31 PERCPU: Embedded 7 pages/cpu @81007000 s7680 r8192 d12800 u32768 pcpu-alloc: s7680 r8192 d12800 u32768 alloc=8*4096 pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260096 Kernel command line: console=ttymxc0,115200 root=/dev/nfs ip=dhcp nfsroot=192.168.111.1:/tftpboot/debian,v3,tcp rw earlyprintk debug PID hash table entries: 4096 (order: 2, 16384 bytes) Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Memory: 1031272K/1048576K available (5380K kernel code, 273K rwdata, 1736K rodata, 303K init, 373K bss, 17304K reserved) Virtual kernel memory layout: vector : 0xffff0000 - 0xffff1000 ( 4 kB) fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) vmalloc : 0xc0800000 - 0xff000000 (1000 MB) lowmem : 0x80000000 - 0xc0000000 (1024 MB) modules : 0x7f000000 - 0x80000000 ( 16 MB) .text : 0x80008000 - 0x806fb4dc (7118 kB) .init : 0x806fc000 - 0x80747e00 ( 304 kB) .data : 0x80748000 - 0x8078c540 ( 274 kB) .bss : 0x8078c540 - 0x807e9bb4 ( 374 kB) SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1 Hierarchical RCU implementation. NR_IRQS:16 nr_irqs:16 16 sched_clock: 32 bits at 66MHz, resolution 15ns, wraps every 65075ms Checking mxc_timer1 0: mxc_timer1 is per-cpu 0: mxc_timer1 is preferred clockevents_shutdown 0 80755900 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at kernel/time/clockevents.c:98 clockevents_exchange_device+0x7c/0x8c() Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.10.0-next-20130701+ #2 [<800147d4>] (unwind_backtrace+0x0/0xf0) from [<80011538>] (show_stack+0x10/0x14) [<80011538>] (show_stack+0x10/0x14) from [<80517800>] (dump_stack+0x78/0x94) [<80517800>] (dump_stack+0x78/0x94) from [<8002407c>] (warn_slowpath_common+0x64/0x88) [<8002407c>] (warn_slowpath_common+0x64/0x88) from [<800240bc>] (warn_slowpath_null+0x1c/0x24) [<800240bc>] (warn_slowpath_null+0x1c/0x24) from [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) from [<80061d90>] (tick_check_new_device+0xf4/0x158) [<80061d90>] (tick_check_new_device+0xf4/0x158) from [<80060eb0>] (clockevents_register_device+0x58/0x128) [<80060eb0>] (clockevents_register_device+0x58/0x128) from [<807032b4>] (mxc_timer_init+0x134/0x178) [<807032b4>] (mxc_timer_init+0x134/0x178) from [<80728358>] (of_clk_init+0x38/0x64) [<80728358>] (of_clk_init+0x38/0x64) from [<8070f06c>] (imx6q_timer_init+0xc/0x4c) [<8070f06c>] (imx6q_timer_init+0xc/0x4c) from [<806ffbf4>] (time_init+0x1c/0x2c) [<806ffbf4>] (time_init+0x1c/0x2c) from [<806fc768>] (start_kernel+0x1a8/0x308) [<806fc768>] (start_kernel+0x1a8/0x308) from [<10008074>] (0x10008074) ---[ end trace 1b75b31a2719ed1c ]--- CPU identified as i.MX6Q, silicon rev 1.2 Console: colour dummy device 80x30 Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 512 CPU: Testing write buffer coherency: ok CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 Checking local_timer 0: local_timer is per-cpu 0: local_timer is preferred clockevents_shutdown 0 810071c0 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at kernel/time/clockevents.c:98 clockevents_exchange_device+0x7c/0x8c() Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.10.0-next-20130701+ #2 [<800147d4>] (unwind_backtrace+0x0/0xf0) from [<80011538>] (show_stack+0x10/0x14) [<80011538>] (show_stack+0x10/0x14) from [<80517800>] (dump_stack+0x78/0x94) [<80517800>] (dump_stack+0x78/0x94) from [<8002407c>] (warn_slowpath_common+0x64/0x88) [<8002407c>] (warn_slowpath_common+0x64/0x88) from [<800240bc>] (warn_slowpath_null+0x1c/0x24) [<800240bc>] (warn_slowpath_null+0x1c/0x24) from [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) from [<80061d90>] (tick_check_new_device+0xf4/0x158) [<80061d90>] (tick_check_new_device+0xf4/0x158) from [<80060eb0>] (clockevents_register_device+0x58/0x128) [<80060eb0>] (clockevents_register_device+0x58/0x128) from [<80014024>] (twd_timer_setup+0xac/0x20c) [<80014024>] (twd_timer_setup+0xac/0x20c) from [<80013004>] (percpu_timer_setup+0x5c/0xb4) [<80013004>] (percpu_timer_setup+0x5c/0xb4) from [<80700518>] (smp_prepare_cpus+0x50/0x7c) [<80700518>] (smp_prepare_cpus+0x50/0x7c) from [<806fc920>] (kernel_init_freeable+0x58/0x1c4) [<806fc920>] (kernel_init_freeable+0x58/0x1c4) from [<80513c28>] (kernel_init+0x8/0xe4) [<80513c28>] (kernel_init+0x8/0xe4) from [<8000e578>] (ret_from_fork+0x14/0x3c) ---[ end trace 1b75b31a2719ed1d ]--- Checking mxc_timer1 0: mxc_timer1 is per-cpu 0: mxc_timer1 is trying broadcast mxc_timer1 is now the broadcast clockevents_shutdown 0 80755900 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at kernel/time/clockevents.c:98 clockevents_exchange_device+0x7c/0x8c() Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.10.0-next-20130701+ #2 [<800147d4>] (unwind_backtrace+0x0/0xf0) from [<80011538>] (show_stack+0x10/0x14) [<80011538>] (show_stack+0x10/0x14) from [<80517800>] (dump_stack+0x78/0x94) [<80517800>] (dump_stack+0x78/0x94) from [<8002407c>] (warn_slowpath_common+0x64/0x88) [<8002407c>] (warn_slowpath_common+0x64/0x88) from [<800240bc>] (warn_slowpath_null+0x1c/0x24) [<800240bc>] (warn_slowpath_null+0x1c/0x24) from [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) from [<80062390>] (tick_install_broadcast_device+0x68/0xbc) [<80062390>] (tick_install_broadcast_device+0x68/0xbc) from [<80060ee8>] (clockevents_register_device+0x90/0x128) [<80060ee8>] (clockevents_register_device+0x90/0x128) from [<80014024>] (twd_timer_setup+0xac/0x20c) [<80014024>] (twd_timer_setup+0xac/0x20c) from [<80013004>] (percpu_timer_setup+0x5c/0xb4) [<80013004>] (percpu_timer_setup+0x5c/0xb4) from [<80700518>] (smp_prepare_cpus+0x50/0x7c) [<80700518>] (smp_prepare_cpus+0x50/0x7c) from [<806fc920>] (kernel_init_freeable+0x58/0x1c4) [<806fc920>] (kernel_init_freeable+0x58/0x1c4) from [<80513c28>] (kernel_init+0x8/0xe4) [<80513c28>] (kernel_init+0x8/0xe4) from [<8000e578>] (ret_from_fork+0x14/0x3c) ---[ end trace 1b75b31a2719ed1e ]--- tick_clock_notify Setting up static identity map for 0x8051bfd0 - 0x8051c040 Checking dummy_timer 0: dummy_timer is per-cpu 0: dummy_timer is trying broadcast CPU1: Booted secondary processor Checking dummy_timer 1: dummy_timer is per-cpu 1: dummy_timer is preferred clockevents_shutdown 1 8100ff00 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 0 at kernel/time/clockevents.c:98 clockevents_exchange_device+0x7c/0x8c() Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 3.10.0-next-20130701+ #2 [<800147d4>] (unwind_backtrace+0x0/0xf0) from [<80011538>] (show_stack+0x10/0x14) [<80011538>] (show_stack+0x10/0x14) from [<80517800>] (dump_stack+0x78/0x94) [<80517800>] (dump_stack+0x78/0x94) from [<8002407c>] (warn_slowpath_common+0x64/0x88) [<8002407c>] (warn_slowpath_common+0x64/0x88) from [<800240bc>] (warn_slowpath_null+0x1c/0x24) [<800240bc>] (warn_slowpath_null+0x1c/0x24) from [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) from [<80061d90>] (tick_check_new_device+0xf4/0x158) [<80061d90>] (tick_check_new_device+0xf4/0x158) from [<80060eb0>] (clockevents_register_device+0x58/0x128) [<80060eb0>] (clockevents_register_device+0x58/0x128) from [<803e9c44>] (dummy_timer_cpu_notify+0x1c/0x24) [<803e9c44>] (dummy_timer_cpu_notify+0x1c/0x24) from [<800471fc>] (notifier_call_chain+0x44/0x84) [<800471fc>] (notifier_call_chain+0x44/0x84) from [<80027628>] (__cpu_notify+0x2c/0x48) [<80027628>] (__cpu_notify+0x2c/0x48) from [<800133e0>] (secondary_start_kernel+0xdc/0x140) [<800133e0>] (secondary_start_kernel+0xdc/0x140) from [<100081ec>] (0x100081ec) ---[ end trace 1b75b31a2719ed1f ]--- CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 Checking local_timer CPU2: Booted secondary processor 1: local_timer is per-cpu 1: local_timer is preferred clockevents_shutdown 1 8100f1c0 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 0 at kernel/time/clockevents.c:98 clockevents_exchange_device+0x7c/0x8c() Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 3.10.0-next-20130701+ #2 [<800147d4>] (unwind_backtrace+0x0/0xf0) from [<80011538>] (show_stack+0x10/0x14) [<80011538>] (show_stack+0x10/0x14) from [<80517800>] (dump_stack+0x78/0x94) [<80517800>] (dump_stack+0x78/0x94) from [<8002407c>] (warn_slowpath_common+0x64/0x88) [<8002407c>] (warn_slowpath_common+0x64/0x88) from [<800240bc>] (warn_slowpath_null+0x1c/0x24) [<800240bc>] (warn_slowpath_null+0x1c/0x24) from [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) from [<80061d90>] (tick_check_new_device+0xf4/0x158) [<80061d90>] (tick_check_new_device+0xf4/0x158) from [<80060eb0>] (clockevents_register_device+0x58/0x128) [<80060eb0>] (clockevents_register_device+0x58/0x128) from [<80014024>] (twd_timer_setup+0xac/0x20c) [<80014024>] (twd_timer_setup+0xac/0x20c) from [<80013004>] (percpu_timer_setup+0x5c/0xb4) [<80013004>] (percpu_timer_setup+0x5c/0xb4) from [<80013404>] (secondary_start_kernel+0x100/0x140) [<80013404>] (secondary_start_kernel+0x100/0x140) from [<100081ec>] (0x100081ec) ---[ end trace 1b75b31a2719ed20 ]--- Checking dummy_timer 1: dummy_timer is per-cpu 1: dummy_timer is trying broadcast Checking dummy_timer 2: dummy_timer is per-cpu 2: dummy_timer is preferred clockevents_shutdown 2 81017f00 ------------[ cut here ]------------ WARNING: CPU: 2 PID: 0 at kernel/time/clockevents.c:98 clockevents_exchange_device+0x7c/0x8c() Modules linked in: CPU: 2 PID: 0 Comm: swapper/2 Tainted: G W 3.10.0-next-20130701+ #2 [<800147d4>] (unwind_backtrace+0x0/0xf0) from [<80011538>] (show_stack+0x10/0x14) [<80011538>] (show_stack+0x10/0x14) from [<80517800>] (dump_stack+0x78/0x94) [<80517800>] (dump_stack+0x78/0x94) from [<8002407c>] (warn_slowpath_common+0x64/0x88) [<8002407c>] (warn_slowpath_common+0x64/0x88) from [<800240bc>] (warn_slowpath_null+0x1c/0x24) [<800240bc>] (warn_slowpath_null+0x1c/0x24) from [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) from [<80061d90>] (tick_check_new_device+0xf4/0x158) [<80061d90>] (tick_check_new_device+0xf4/0x158) from [<80060eb0>] (clockevents_register_device+0x58/0x128) [<80060eb0>] (clockevents_register_device+0x58/0x128) from [<803e9c44>] (dummy_timer_cpu_notify+0x1c/0x24) [<803e9c44>] (dummy_timer_cpu_notify+0x1c/0x24) from [<800471fc>] (notifier_call_chain+0x44/0x84) [<800471fc>] (notifier_call_chain+0x44/0x84) from [<80027628>] (__cpu_notify+0x2c/0x48) [<80027628>] (__cpu_notify+0x2c/0x48) from [<800133e0>] (secondary_start_kernel+0xdc/0x140) [<800133e0>] (secondary_start_kernel+0xdc/0x140) from [<100081ec>] (0x100081ec) ---[ end trace 1b75b31a2719ed21 ]--- CPU2: thread -1, cpu 2, socket 0, mpidr 80000002 Checking local_timer CPU3: Booted secondary processor 2: local_timer is per-cpu 2: local_timer is preferred clockevents_shutdown 2 810171c0 ------------[ cut here ]------------ WARNING: CPU: 2 PID: 0 at kernel/time/clockevents.c:98 clockevents_exchange_device+0x7c/0x8c() Modules linked in: CPU: 2 PID: 0 Comm: swapper/2 Tainted: G W 3.10.0-next-20130701+ #2 [<800147d4>] (unwind_backtrace+0x0/0xf0) from [<80011538>] (show_stack+0x10/0x14) [<80011538>] (show_stack+0x10/0x14) from [<80517800>] (dump_stack+0x78/0x94) [<80517800>] (dump_stack+0x78/0x94) from [<8002407c>] (warn_slowpath_common+0x64/0x88) [<8002407c>] (warn_slowpath_common+0x64/0x88) from [<800240bc>] (warn_slowpath_null+0x1c/0x24) [<800240bc>] (warn_slowpath_null+0x1c/0x24) from [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) from [<80061d90>] (tick_check_new_device+0xf4/0x158) [<80061d90>] (tick_check_new_device+0xf4/0x158) from [<80060eb0>] (clockevents_register_device+0x58/0x128) [<80060eb0>] (clockevents_register_device+0x58/0x128) from [<80014024>] (twd_timer_setup+0xac/0x20c) [<80014024>] (twd_timer_setup+0xac/0x20c) from [<80013004>] (percpu_timer_setup+0x5c/0xb4) [<80013004>] (percpu_timer_setup+0x5c/0xb4) from [<80013404>] (secondary_start_kernel+0x100/0x140) [<80013404>] (secondary_start_kernel+0x100/0x140) from [<100081ec>] (0x100081ec) ---[ end trace 1b75b31a2719ed22 ]--- Checking dummy_timer 2: dummy_timer is per-cpu 2: dummy_timer is trying broadcast Checking dummy_timer 3: dummy_timer is per-cpu 3: dummy_timer is preferred clockevents_shutdown 3 8101ff00 ------------[ cut here ]------------ WARNING: CPU: 3 PID: 0 at kernel/time/clockevents.c:98 clockevents_exchange_device+0x7c/0x8c() Modules linked in: CPU: 3 PID: 0 Comm: swapper/3 Tainted: G W 3.10.0-next-20130701+ #2 [<800147d4>] (unwind_backtrace+0x0/0xf0) from [<80011538>] (show_stack+0x10/0x14) [<80011538>] (show_stack+0x10/0x14) from [<80517800>] (dump_stack+0x78/0x94) [<80517800>] (dump_stack+0x78/0x94) from [<8002407c>] (warn_slowpath_common+0x64/0x88) [<8002407c>] (warn_slowpath_common+0x64/0x88) from [<800240bc>] (warn_slowpath_null+0x1c/0x24) [<800240bc>] (warn_slowpath_null+0x1c/0x24) from [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) from [<80061d90>] (tick_check_new_device+0xf4/0x158) [<80061d90>] (tick_check_new_device+0xf4/0x158) from [<80060eb0>] (clockevents_register_device+0x58/0x128) [<80060eb0>] (clockevents_register_device+0x58/0x128) from [<803e9c44>] (dummy_timer_cpu_notify+0x1c/0x24) [<803e9c44>] (dummy_timer_cpu_notify+0x1c/0x24) from [<800471fc>] (notifier_call_chain+0x44/0x84) [<800471fc>] (notifier_call_chain+0x44/0x84) from [<80027628>] (__cpu_notify+0x2c/0x48) [<80027628>] (__cpu_notify+0x2c/0x48) from [<800133e0>] (secondary_start_kernel+0xdc/0x140) [<800133e0>] (secondary_start_kernel+0xdc/0x140) from [<100081ec>] (0x100081ec) ---[ end trace 1b75b31a2719ed23 ]--- CPU3: thread -1, cpu 3, socket 0, mpidr 80000003 Checking local_timer Brought up 4 CPUs SMP: Total of 4 processors activated (6324.22 BogoMIPS). CPU: All CPU(s) started in SVC mode. devtmpfs: initialized pinctrl core: initialized pinctrl subsystem regulator-dummy: no parameters NET: Registered protocol family 16 DMA: preallocated 256 KiB pool for atomic coherent allocations syscon 20c8000.anatop: regmap [mem 0x020c8000-0x020c8fff] registered vdd1p1: 800 <--> 1375 mV at 1100 mV vdd3p0: 2800 <--> 3150 mV at 3000 mV vdd2p5: 2000 <--> 2750 mV at 2400 mV cpu: 725 <--> 1450 mV at 1150 mV vddpu: 725 <--> 1450 mV at 1150 mV vddsoc: 725 <--> 1450 mV at 1200 mV syscon 20e0000.iomuxc-gpr: regmap [mem 0x020e0000-0x020e0037] registered 3: local_timer is per-cpu 3: local_timer is preferred clockevents_shutdown 3 8101f1c0 ------------[ cut here ]------------ WARNING: CPU: 3 PID: 0 at kernel/time/clockevents.c:98 clockevents_exchange_device+0x7c/0x8c() Modules linked in: CPU: 3 PID: 0 Comm: swapper/3 Tainted: G W 3.10.0-next-20130701+ #2 [<800147d4>] (unwind_backtrace+0x0/0xf0) from [<80011538>] (show_stack+0x10/0x14) [<80011538>] (show_stack+0x10/0x14) from [<80517800>] (dump_stack+0x78/0x94) [<80517800>] (dump_stack+0x78/0x94) from [<8002407c>] (warn_slowpath_common+0x64/0x88) [<8002407c>] (warn_slowpath_common+0x64/0x88) from [<800240bc>] (warn_slowpath_null+0x1c/0x24) [<800240bc>] (warn_slowpath_null+0x1c/0x24) from [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) [<800615f0>] (clockevents_exchange_device+0x7c/0x8c) from [<80061d90>] (tick_check_new_device+0xf4/0x158) [<80061d90>] (tick_check_new_device+0xf4/0x158) from [<80060eb0>] (clockevents_register_device+0x58/0x128) [<80060eb0>] (clockevents_register_device+0x58/0x128) from [<80014024>] (twd_timer_setup+0xac/0x20c) [<80014024>] (twd_timer_setup+0xac/0x20c) from [<80013004>] (percpu_timer_setup+0x5c/0xb4) [<80013004>] (percpu_timer_setup+0x5c/0xb4) from [<80013404>] (secondary_start_kernel+0x100/0x140) [<80013404>] (secondary_start_kernel+0x100/0x140) from [<100081ec>] (0x100081ec) ---[ end trace 1b75b31a2719ed24 ]--- Checking dummy_timer 3: dummy_timer is per-cpu 3: dummy_timer is trying broadcast hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers. hw-breakpoint: maximum watchpoint size is 4 bytes. imx6q-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver bio: create slab at 0 mxs-dma 110000.dma-apbh: initialized usb_otg_vbus: 5000 mV wm8962-supply: no parameters SCSI subsystem initialized libata version 3.00 loaded. usbcore: registered new interface driver usbfs usbcore: registered new interface driver hub usbcore: registered new device driver usb i2c i2c-0: IMX I2C adapter registered Linux video capture interface: v2.00 pps_core: LinuxPPS API ver. 1 registered pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti PTP clock support registered Advanced Linux Sound Architecture Driver Initialized. tick_clock_notify Switched to clocksource mxc_timer1 bc_setup_oneshot 3 80755900 next 800000000098967f nevt 7fffffffffffffff per 989680 nxtp 48b7b900 now 4890a0f3 2 810171c0 93 ------------[ cut here ]------------ WARNING: CPU: 2 PID: 0 at kernel/time/clockevents.c:214 clockevents_program_event+0x134/0x148() Modules linked in: next 800000001d34ce7f nevt 7fffffffffffffff per 989680 nxtp 48b7b900 now 489c4ed4 2 810171c0 93 next 8000000226bf35ff nevt 7fffffffffffffff per 989680 nxtp 49504f80 now 49193e51 2 810171c0 93 next 8000000430e233ff nevt 7fffffffffffffff per 989680 nxtp 49504f80 now 49995518 2 810171c0 93 next 800000063b0531ff nevt 7fffffffffffffff per 989680 nxtp 49504f80 now 4a1b13ff 2 810171c0 93 next 8000000845c0c67f nevt 7fffffffffffffff per 989680 nxtp 49504f80 now 4a9d8aca 2 810171c0 93 ...