Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752131Ab3F1Tad (ORCPT ); Fri, 28 Jun 2013 15:30:33 -0400 Received: from mail-gh0-f173.google.com ([209.85.160.173]:64753 "EHLO mail-gh0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751302Ab3F1Taa (ORCPT ); Fri, 28 Jun 2013 15:30:30 -0400 Date: Fri, 28 Jun 2013 15:35:52 -0400 (EDT) From: Vince Weaver To: Vince Weaver cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Paul Mackerras , Ingo Molnar , Arnaldo Carvalho de Melo , trinity@vger.kernel.org Subject: Re: [testcase] perf: yet another fuzzer triggered crash In-Reply-To: Message-ID: References: User-Agent: Alpine 2.10 (DEB 1266 2009-07-14) 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: 23319 Lines: 458 On Fri, 14 Jun 2013, Vince Weaver wrote: > OK, I haven't managed to get a small reproducible test case for the system > crash yet I wasted the last 2 days bisecting a 10000 syscall trace, but below is a 20-syscall testcase that rapidly makes a core2 machine running 3.10-rc7 unusable. You may have to run this twice (first triggers WARNING second crashes the machine). /* This code quickly causes 3.10-rc7 on core2 to get stuck */ /* process never ends, lots of garbage in logs, can't reboot */ /* see the error log at end. */ /* log_to_code output from ./bad.trace.bisect54 */ /* by Vince Weaver #include #include #include #include #include #include #include #include #include int fd[1024]; struct perf_event_attr pe[1024]; int forked_pid; int perf_event_open(struct perf_event_attr *hw_event_uptr, pid_t pid, int cpu, int group_fd, unsigned long flags) { return syscall(__NR_perf_event_open,hw_event_uptr, pid, cpu, group_fd, flags); } int main(int argc, char **argv) { /* 1 */ memset(&pe[29],0,sizeof(struct perf_event_attr)); pe[29].type=PERF_TYPE_HW_CACHE; pe[29].size=96; pe[29].config=PERF_COUNT_HW_CACHE_DTLB | ( PERF_COUNT_HW_CACHE_OP_READ << 8) | ( PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16 ); pe[29].sample_type=0; /* 0 */ pe[29].read_format=PERF_FORMAT_GROUP; /* 8 */ pe[29].pinned=1; pe[29].exclude_kernel=1; pe[29].exclude_hv=1; pe[29].exclude_idle=1; pe[29].mmap=1; pe[29].freq=1; pe[29].inherit_stat=1; pe[29].watermark=1; pe[29].precise_ip=0; /* arbitrary skid */ pe[29].wakeup_watermark=0; pe[29].bp_type=HW_BREAKPOINT_EMPTY; fd[29]=perf_event_open(&pe[29],0,0,-1,PERF_FLAG_FD_NO_GROUP /*1*/ ); /* 2 */ memset(&pe[42],0,sizeof(struct perf_event_attr)); pe[42].type=PERF_TYPE_SOFTWARE; pe[42].size=80; pe[42].config=PERF_COUNT_SW_TASK_CLOCK; pe[42].sample_type=0; /* 0 */ pe[42].read_format=PERF_FORMAT_TOTAL_TIME_ENABLED|PERF_FORMAT_TOTAL_TIME_RUNNING|PERF_FORMAT_ID; /* 7 */ pe[42].inherit=1; pe[42].exclusive=1; pe[42].exclude_kernel=1; pe[42].exclude_idle=1; pe[42].freq=1; pe[42].task=1; pe[42].watermark=1; pe[42].precise_ip=3; /* must have zero skid */ pe[42].sample_id_all=1; pe[42].exclude_host=1; pe[42].wakeup_watermark=0; pe[42].bp_type=HW_BREAKPOINT_EMPTY; fd[42]=perf_event_open(&pe[42],0,0,-1,0 /*0*/ ); /* 3 */ forked_pid=fork(); if (forked_pid==0) while(1); /* 4 */ prctl(PR_TASK_PERF_EVENTS_DISABLE); /* 5 */ kill(forked_pid,SIGKILL); /* 6 */ prctl(PR_TASK_PERF_EVENTS_ENABLE); /* 7 */ memset(&pe[15],0,sizeof(struct perf_event_attr)); pe[15].type=PERF_TYPE_SOFTWARE; pe[15].config=PERF_COUNT_SW_TASK_CLOCK; pe[15].sample_type=0; /* 0 */ pe[15].read_format=PERF_FORMAT_ID; /* 4 */ pe[15].disabled=1; pe[15].inherit=1; pe[15].exclude_user=1; pe[15].exclude_hv=1; pe[15].enable_on_exec=1; pe[15].task=1; pe[15].watermark=1; pe[15].precise_ip=2; /* request zero skid */ pe[15].mmap_data=1; pe[15].sample_id_all=1; pe[15].exclude_guest=1; pe[15].wakeup_watermark=0; pe[15].bp_type=HW_BREAKPOINT_EMPTY; fd[15]=perf_event_open(&pe[15],0,0,fd[29],0 /*0*/ ); /* 8 */ close(fd[29]); /* 9 */ memset(&pe[12],0,sizeof(struct perf_event_attr)); pe[12].type=PERF_TYPE_SOFTWARE; pe[12].config=PERF_COUNT_SW_TASK_CLOCK; pe[12].sample_type=0; /* 0 */ pe[12].read_format=PERF_FORMAT_TOTAL_TIME_ENABLED|PERF_FORMAT_ID; /* 5 */ pe[12].disabled=1; pe[12].inherit=1; pe[12].exclusive=1; pe[12].mmap=1; pe[12].freq=1; pe[12].enable_on_exec=1; pe[12].watermark=1; pe[12].precise_ip=0; /* arbitrary skid */ pe[12].mmap_data=1; pe[12].exclude_guest=1; pe[12].wakeup_watermark=0; pe[12].bp_type=HW_BREAKPOINT_EMPTY; fd[12]=perf_event_open(&pe[12],0,0,-1,PERF_FLAG_FD_NO_GROUP /*1*/ ); /* 10 */ prctl(PR_TASK_PERF_EVENTS_DISABLE); /* 11 */ prctl(PR_TASK_PERF_EVENTS_ENABLE); /* 12 */ memset(&pe[4],0,sizeof(struct perf_event_attr)); pe[4].type=PERF_TYPE_SOFTWARE; pe[4].size=96; pe[4].config=PERF_COUNT_SW_TASK_CLOCK; pe[4].sample_type=0; /* 0 */ pe[4].read_format=PERF_FORMAT_TOTAL_TIME_ENABLED|PERF_FORMAT_TOTAL_TIME_RUNNING|PERF_FORMAT_ID; /* 7 */ pe[4].pinned=1; pe[4].exclude_user=1; pe[4].exclude_hv=1; pe[4].exclude_idle=1; pe[4].mmap=1; pe[4].freq=1; pe[4].inherit_stat=1; pe[4].task=1; pe[4].precise_ip=0; /* arbitrary skid */ pe[4].wakeup_events=0; pe[4].bp_type=HW_BREAKPOINT_EMPTY; fd[4]=perf_event_open(&pe[4],0,0,-1,0 /*0*/ ); /* 13 */ memset(&pe[7],0,sizeof(struct perf_event_attr)); pe[7].type=PERF_TYPE_SOFTWARE; pe[7].size=96; pe[7].config=PERF_COUNT_SW_TASK_CLOCK; pe[7].sample_type=0; /* 0 */ pe[7].read_format=PERF_FORMAT_TOTAL_TIME_ENABLED|PERF_FORMAT_GROUP; /* 9 */ pe[7].exclusive=1; pe[7].exclude_user=1; pe[7].exclude_kernel=1; pe[7].exclude_hv=1; pe[7].exclude_idle=1; pe[7].comm=1; pe[7].inherit_stat=1; pe[7].precise_ip=1; /* constant skid */ pe[7].exclude_host=1; pe[7].wakeup_events=0; pe[7].bp_type=HW_BREAKPOINT_EMPTY; fd[7]=perf_event_open(&pe[7],0,0,-1,PERF_FLAG_FD_NO_GROUP /*1*/ ); /* 14 */ forked_pid=fork(); if (forked_pid==0) while(1); /* 15 */ kill(forked_pid,SIGKILL); /* 16 */ forked_pid=fork(); if (forked_pid==0) while(1); /* 17 */ kill(forked_pid,SIGKILL); /* 18 */ close(fd[4]); /* 19 */ memset(&pe[4],0,sizeof(struct perf_event_attr)); pe[4].type=PERF_TYPE_HARDWARE; pe[4].size=72; pe[4].config=PERF_COUNT_HW_BRANCH_INSTRUCTIONS; pe[4].sample_type=0; /* 0 */ pe[4].read_format=PERF_FORMAT_TOTAL_TIME_ENABLED|PERF_FORMAT_TOTAL_TIME_RUNNING|PERF_FORMAT_ID; /* 7 */ pe[4].exclude_user=1; pe[4].exclude_idle=1; pe[4].enable_on_exec=1; pe[4].precise_ip=0; /* arbitrary skid */ pe[4].mmap_data=1; pe[4].exclude_host=1; pe[4].exclude_guest=1; pe[4].wakeup_events=0; pe[4].bp_type=HW_BREAKPOINT_EMPTY; fd[4]=perf_event_open(&pe[4],0,0,-1,PERF_FLAG_FD_OUTPUT /*2*/ ); /* 20 */ prctl(PR_TASK_PERF_EVENTS_DISABLE); /* Replayed 20 syscalls */ return 0; } /* Message from syslogd@core2 at Jun 28 15:11:34 ... kernel:[ 140.248002] BUG: soft lockup - CPU#1 stuck for 23s! [out:3049] Message from syslogd@core2 at Jun 28 15:12:02 ... kernel:[ 168.248002] BUG: soft lockup - CPU#1 stuck for 22s! [out:3049] Message from syslogd@core2 at Jun 28 15:12:38 ... kernel:[ 204.248002] BUG: soft lockup - CPU#1 stuck for 24s! [out:3049] Message from syslogd@core2 at Jun 28 15:13:06 ... kernel:[ 232.248002] BUG: soft lockup - CPU#1 stuck for 23s! [out:3049] Message from syslogd@core2 at Jun 28 15:13:38 ... kernel:[ 264.248002] BUG: soft lockup - CPU#1 stuck for 22s! [out:3049] [ 82.239623] ------------[ cut here ]------------ [ 82.243537] WARNING: at kernel/events/core.c:2122 task_ctx_sched_out+0x3c/0x) [ 82.243537] Modules linked in: nfsd auth_rpcgss oid_registry nfs_acl nfs locn [ 82.243537] CPU: 0 PID: 3047 Comm: out Not tainted 3.10.0-rc7 #1 [ 82.243537] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BI2 [ 82.243537] 0000000000000000 ffffffff8102e0f5 0000000000000000 ffff88011fc18 [ 82.243537] ffff88011799b040 0000000000000000 ffff8801177acecc ffffffff810af [ 82.243537] ffff8801177acec0 ffffffff810af06f 0000000000000009 ffff880117990 [ 82.243537] Call Trace: [ 82.243537] [] ? warn_slowpath_common+0x5b/0x70 [ 82.243537] [] ? task_ctx_sched_out+0x3c/0x5f [ 82.243537] [] ? perf_event_exit_task+0xbf/0x194 [ 82.243537] [] ? do_exit+0x3ef/0x90c [ 82.243537] [] ? do_wp_page+0x275/0x5a6 [ 82.243537] [] ? do_group_exit+0x66/0x98 [ 82.243537] [] ? get_signal_to_deliver+0x479/0x4ad [ 82.243537] [] ? __pte_alloc+0x83/0xf2 [ 82.243537] [] ? do_signal+0x3c/0x432 [ 82.243537] [] ? __do_page_fault+0x31c/0x3ba [ 82.243537] [] ? do_notify_resume+0x20/0x5d [ 82.243537] [] ? retint_signal+0x3d/0x78 [ 82.243537] ---[ end trace 6e0d112623f126d5 ]--- [ 111.664002] INFO: rcu_sched self-detected stall on CPU[ 111.676008] INFO: r) [ 111.676018] sending NMI to all CPUs: [ 111.664002] NMI backtrace for cpu 1 [ 111.664002] CPU: 1 PID: 3049 Comm: out Tainted: G W 3.10.0-rc7 #1 [ 111.664002] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BI2 [ 111.664002] task: ffff880117b62080 ti: ffff880117a6a000 task.ti: ffff880117a0 [ 111.664002] RIP: 0010:[] [] delay_tsc+06 [ 111.664002] RSP: 0018:ffff88011fc83ca0 EFLAGS: 00000083 [ 111.664002] RAX: 000000000dfb29b6 RBX: ffffffff8183c770 RCX: 000000000dfb218c [ 111.664002] RDX: 000000000000082a RSI: 0000000000000001 RDI: 00000000000009d2 [ 111.664002] RBP: 000000000000270b R08: 0000000000000001 R09: ffffffff817caa1f [ 111.664002] R10: 0000000000000000 R11: 0000000000000200 R12: 0000000000000020 [ 111.664002] R13: ffffffff812465bc R14: 0000000000000039 R15: 0000000000000039 [ 111.664002] FS: 00007fa834fef700(0000) GS:ffff88011fc80000(0000) knlGS:00000 [ 111.664002] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 111.664002] CR2: 0000000000600e70 CR3: 00000001171da000 CR4: 00000000000407e0 [ 111.664002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 111.664002] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 111.664002] Stack: [ 111.664002] ffffffff81246578 ffffffff8183c770 000000000000006c ffffffff81830 [ 111.664002] ffffffff812465cd ffffffff817caa41 ffffffff817caa10 ffffffff81245 [ 111.664002] ffffffff8183c770 0000000000000000 0000000000000016 0000000000001 [ 111.664002] Call Trace: [ 111.664002] [] ? wait_for_xmitr+0x3d/0x81 [ 111.664002] [] ? serial8250_console_putchar+0x11/0x1f [ 111.664002] [] ? uart_console_write+0x35/0x47 [ 111.664002] [] ? serial8250_console_write+0x9e/0xe9 [ 111.664002] [] ? call_console_drivers.constprop.22+0x9e/0e [ 111.664002] [] ? console_unlock+0x12e/0x2f9 [ 111.664002] [] ? vprintk_emit+0x3ab/0x3d6 [ 111.664002] [] ? printk+0x4f/0x51 [ 111.664002] [] ? rcu_check_callbacks+0x106/0x4bb [ 111.664002] [] ? tick_sched_do_timer+0x25/0x25 [ 111.664002] [] ? update_process_times+0x31/0x5c [ 111.664002] [] ? tick_sched_handle+0x3e/0x4a [ 111.664002] [] ? tick_sched_timer+0x30/0x4c [ 111.664002] [] ? __run_hrtimer+0xa9/0x14e [ 111.664002] [] ? hrtimer_interrupt+0xbd/0x19e [ 111.664002] [] ? perf_remove_from_context+0x89/0x89 [ 111.664002] [] ? smp_apic_timer_interrupt+0x6d/0x7e [ 111.664002] [] ? apic_timer_interrupt+0x6a/0x70 [ 111.664002] [] ? group_sched_out+0x62/0x62 [ 111.664002] [] ? perf_event_disable+0x64/0x92 [ 111.664002] [] ? perf_event_for_each_child+0x62/0x83 [ 111.664002] [] ? perf_event_task_disable+0x3f/0x6d [ 111.664002] [] ? SyS_prctl+0x16a/0x32f [ 111.664002] [] ? system_call_fastpath+0x16/0x1b [ 111.664002] Code: 3c bf e9 cb ff ff ff 65 8b 34 25 c4 b0 00 00 66 66 90 0f a [ 111.676334] NMI backtrace for cpu 0 [ 111.676339] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.10.0-rc7 1 [ 111.676341] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BI2 [ 111.676345] task: ffffffff81610400 ti: ffffffff81600000 task.ti: ffffffff8160 [ 111.676348] RIP: 0010:[] [] __const_ude0 [ 111.676357] RSP: 0018:ffff88011fc03e60 EFLAGS: 00000046 [ 111.676360] RAX: 0000000000000000 RBX: 0000000000002710 RCX: 0000000000000040 [ 111.676363] RDX: 00000000009aa06c RSI: 0000000000000200 RDI: 0000000000418958 [ 111.676365] RBP: ffff88011fc0d9a0 R08: 0000000000000000 R09: ffffffff817b87ec [ 111.676368] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff81637dc0 [ 111.676371] R13: 0000000000000001 R14: ffffffff81600000 R15: ffffffff81637e80 [ 111.676374] FS: 0000000000000000(0000) GS:ffff88011fc00000(0000) knlGS:00000 [ 111.676377] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 111.676380] CR2: 00007fa834dd8a60 CR3: 00000001176de000 CR4: 00000000000407f0 [ 111.676383] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 111.676385] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 111.676387] Stack: [ 111.676388] ffffffff8101c67f ffffffff81637dc0 ffffffff81092a14 0000000000002 [ 111.676394] 0000000000000083 0000000000000000 ffffffff81610400 0000000000000 [ 111.676399] 0000000000000000 ffff88011fc0d370 ffffffff8106b90e ffff88011fc00 [ 111.676405] Call Trace: [ 111.676407] [] ? arch_trigger_all_cpu_backtrace+0xf [ 111.676416] [] ? rcu_check_callbacks+0x3dc/0x4bb [ 111.676424] [] ? tick_sched_do_timer+0x25/0x25 [ 111.676429] [] ? update_process_times+0x31/0x5c [ 111.676436] [] ? tick_sched_handle+0x3e/0x4a [ 111.676441] [] ? tick_sched_timer+0x30/0x4c [ 111.676447] [] ? __run_hrtimer+0xa9/0x14e [ 111.676452] [] ? hrtimer_interrupt+0xbd/0x19e [ 111.676458] [] ? smp_apic_timer_interrupt+0x6d/0x7e [ 111.676464] [] ? apic_timer_interrupt+0x6a/0x70 [ 111.676470] [] ? default_idle+0x14/0x3a [ 111.676480] [] ? arch_cpu_idle+0x5/0x14 [ 111.676486] [] ? cpu_startup_entry+0x103/0x176 [ 111.676493] [] ? start_kernel+0x3d6/0x3e1 [ 111.676499] [] ? repair_env_string+0x54/0x54 [ 111.676505] Code: eb 0e 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 ff c8 7 [ 111.664002] { 1} (t=5733 jiffies g=359 c=358 q=18) [ 111.664002] sending NMI to all CPUs: [ 111.664002] NMI backtrace for cpu 1 [ 111.664002] CPU: 1 PID: 3049 Comm: out Tainted: G W 3.10.0-rc7 #1 [ 111.664002] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BI2 [ 111.664002] task: ffff880117b62080 ti: ffff880117a6a000 task.ti: ffff880117a0 [ 111.664002] RIP: 0010:[] [] delay_tsc+06 [ 111.664002] RSP: 0018:ffff88011fc83e60 EFLAGS: 00000847 [ 111.664002] RAX: 00000000357ac791 RBX: 0000000000002710 RCX: 00000000357ac791 [ 111.664002] RDX: 000000000000004f RSI: 0000000000000001 RDI: 0000000000265903 [ 111.664002] RBP: ffff88011fc8d9a0 R08: 0000000000000000 R09: 0000000000000000 [ 111.664002] R10: 00000000ffffffff R11: ffff880118676260 R12: ffffffff81637dc0 [ 111.664002] R13: ffff88011fc8d370 R14: ffff880117a6a000 R15: 0000000000000001 [ 111.664002] FS: 00007fa834fef700(0000) GS:ffff88011fc80000(0000) knlGS:00000 [ 111.664002] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 111.664002] CR2: 0000000000600e70 CR3: 00000001171da000 CR4: 00000000000407e0 [ 111.664002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 111.664002] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 111.664002] Stack: [ 111.664002] ffffffff8101c67f ffffffff81637dc0 ffffffff810927dc 0000000000002 [ 111.664002] 0000000000353d39 0000000000000001 ffff880117b62080 0000000000000 [ 111.664002] 0000000000000001 ffff88011fc8d370 ffffffff8106b90e ffff88011fc80 [ 111.664002] Call Trace: [ 111.664002] [ 111.664002] [] ? arch_trigger_all_cpu_backtrace+0x76/0x7f [ 111.664002] [] ? rcu_check_callbacks+0x1a4/0x4bb [ 111.664002] [] ? tick_sched_do_timer+0x25/0x25 [ 111.664002] [] ? update_process_times+0x31/0x5c [ 111.664002] [] ? tick_sched_handle+0x3e/0x4a [ 111.664002] [] ? tick_sched_timer+0x30/0x4c [ 111.664002] [] ? __run_hrtimer+0xa9/0x14e [ 111.664002] [] ? hrtimer_interrupt+0xbd/0x19e [ 111.664002] [] ? perf_remove_from_context+0x89/0x89 [ 111.664002] [] ? smp_apic_timer_interrupt+0x6d/0x7e [ 111.664002] [] ? apic_timer_interrupt+0x6a/0x70 [ 111.664002] [ 111.664002] [] ? group_sched_out+0x62/0x62 [ 111.664002] [] ? perf_event_disable+0x64/0x92 [ 111.664002] [] ? perf_event_for_each_child+0x62/0x83 [ 111.664002] [] ? perf_event_task_disable+0x3f/0x6d [ 111.664002] [] ? SyS_prctl+0x16a/0x32f [ 111.664002] [] ? system_call_fastpath+0x16/0x1b [ 111.664002] Code: ff c7 10 00 00 e9 d4 ff ff ff 48 8d 3c bf e9 cb ff ff ff 6 [ 113.636004] NMI backtrace for cpu 0 [ 113.636004] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.10.0-rc7 1 [ 113.636004] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BI2 [ 113.636004] task: ffffffff81610400 ti: ffffffff81600000 task.ti: ffffffff8160 [ 113.636004] RIP: 0010:[] [] default_idla [ 113.636004] RSP: 0018:ffffffff81601f98 EFLAGS: 00000246 [ 113.636004] RAX: 0000000000000000 RBX: ffffffff81601fd8 RCX: 00000000ffffffff [ 113.636004] RDX: 0100000000000000 RSI: 0000000000000000 RDI: ffff88011fc0d81c [ 113.636004] RBP: ffffffff81601fd8 R08: 0000000000000000 R09: 0000000000000000 [ 113.636004] R10: 0000000000000001 R11: 0000000000000002 R12: ffffffff817332d0 [ 113.636004] R13: ffff88011ffad540 R14: 0000000000000000 R15: 0000000000000000 [ 113.636004] FS: 0000000000000000(0000) GS:ffff88011fc00000(0000) knlGS:00000 [ 113.636004] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 113.636004] CR2: 00007fa834dd8a60 CR3: 0000000117988000 CR4: 00000000000407f0 [ 113.636004] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.636004] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 113.636004] Stack: [ 113.636004] ffffffff8106465d 516a4e0130c2f192 ffffffffffffffff ffffffff81720 [ 113.636004] ffffffff816aacaf ffffffff816aa6fb ffffffff817332d0 0000000000000 [ 113.636004] 0000000000000000 0000000000000000 0000000000000000 0000000000000 [ 113.636004] Call Trace: [ 113.636004] [] ? cpu_startup_entry+0x103/0x176 [ 113.636004] [] ? start_kernel+0x3d6/0x3e1 [ 113.636004] [] ? repair_env_string+0x54/0x54 [ 113.636004] Code: 08 00 48 8b 7b 08 44 89 e2 89 ee ff 13 48 83 c3 10 48 83 3 [ 140.248002] BUG: soft lockup - CPU#1 stuck for 23s! [out:3049] [ 140.248002] Modules linked in: nfsd auth_rpcgss oid_registry nfs_acl nfs locn [ 140.248002] CPU: 1 PID: 3049 Comm: out Tainted: G W 3.10.0-rc7 #1 [ 140.248002] Hardware name: AOpen DE7000/nMCP7ALPx-DE R1.06 Oct.19.2012, BI2 [ 140.248002] task: ffff880117b62080 ti: ffff880117a6a000 task.ti: ffff880117a0 [ 140.248002] RIP: 0010:[] [] perf_event_2 [ 140.248002] RSP: 0018:ffff880117a6bed0 EFLAGS: 00000282 [ 140.248002] RAX: 0000000000000001 RBX: 00007fa834b12259 RCX: 0000000000000001 [ 140.248002] RDX: 000000000000fe0d RSI: ffffffff810aa81a RDI: ffff8801177ac7cc [ 140.248002] RBP: ffff8801177ac7cc R08: 0000000000000002 R09: 0000000000602000 [ 140.248002] R10: 00007fa834b12259 R11: 0000000000000246 R12: 0000000000000002 [ 140.248002] R13: ffff8801177ac7cc R14: 00007fa834b12259 R15: 0000000000000246 [ 140.248002] FS: 00007fa834fef700(0000) GS:ffff88011fc80000(0000) knlGS:00000 [ 140.248002] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 140.248002] CR2: 0000000000600e70 CR3: 00000001171da000 CR4: 00000000000407e0 [ 140.248002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 140.248002] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 140.248002] Stack: [ 140.248002] ffff880118b96400 ffff880117abf400 ffff880118b965d0 ffffffff810aa [ 140.248002] ffff880118b96400 ffff880117b62080 ffff880117b62708 0000000000002 [ 140.248002] ffffffff810ab3da 0000000000000000 0000000000000000 ffff880117b60 [ 140.248002] Call Trace: [ 140.248002] [] ? perf_event_for_each_child+0x62/0x83 [ 140.248002] [] ? perf_event_task_disable+0x3f/0x6d [ 140.248002] [] ? SyS_prctl+0x16a/0x32f [ 140.248002] [] ? system_call_fastpath+0x16/0x1b [ 140.248002] Code: 48 89 da 48 c7 c6 1a a8 0a 81 e8 cc e4 ff ff 85 c0 74 41 4 */ -- 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/