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Message-ID: <534E49C8.7050206@nod.at> Date: Wed, 16 Apr 2014 11:13:44 +0200 From: Richard Weinberger <richard@....at> To: the arch/x86 maintainers <x86@...nel.org> CC: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, Seiji Aguchi <seiji.aguchi@....com>, ak@...ux.intel.com, Steven Rostedt <rostedt@...dmis.org>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Borislav Petkov <bp@...en8.de>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: WARNING: CPU: 2 PID: 1857 at arch/x86/kernel/smp.c:124 Hi! On a new 8 core server I'm facing the following issue. After an oops a warning triggers. Full dmesg and .config are attached. The same issue happens also on 3.12.x. Any ideas? Thanks, //richard SysRq : Trigger a crash BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffff81350206>] sysrq_handle_crash+0x16/0x20 PGD 105ee09067 PUD 105ed52067 PMD 0 Oops: 0002 [#1] SMP Modules linked in: netconsole configfs drbd lru_cache libcrc32c bridge 8021q garp stp llc ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 vfat fat iTCO_wdt iTCO_vendor_support pcspkr sb_edac edac_core i2c_i801 lpc_ich mfd_core sg igb i2c_algo_bit i2c_core ptp pps_core ioatdma dca acpi_cpufreq wmi ext4(E) jbd2(E) mbcache(E) sd_mod(E) crc_t10dif(E) crct10dif_common(E) ahci(E) libahci(E) megaraid_sas(E) mpt2sas(E) scsi_transport_sas(E) raid_class(E) dm_mirror(E) dm_region_hash(E) dm_log(E) dm_mod(E) CPU: 2 PID: 1857 Comm: bash Tainted: G E 3.15.0-rc1 #1 Hardware name: Thomas-Krenn.AG X9DR7/E-(J)LN4F/X9DR7/E-(J)LN4F, BIOS 3.0a 09/10/2013 task: ffff88007db2d200 ti: ffff88085efe6000 task.ti: ffff88085efe6000 RIP: 0010:[<ffffffff81350206>] [<ffffffff81350206>] sysrq_handle_crash+0x16/0x20 RSP: 0018:ffff88085efe7e68 EFLAGS: 00010092 RAX: 000000000000000f RBX: 0000000000000063 RCX: 0000000000000000 RDX: ffff88087fd0ed70 RSI: ffff88087fd0d268 RDI: 0000000000000063 RBP: ffff88085efe7e68 R08: 0000000000000003 R09: 000000000001c8f4 R10: 000000000000054b R11: 000000000000054c R12: ffffffff81acbc80 R13: 0000000000000286 R14: 0000000000000007 R15: 0000000000000000 FS: 00007f528eff8700(0000) GS:ffff88087fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000105e7eb000 CR4: 00000000000407e0 Stack: ffff88085efe7ea8 ffffffff81350b79 01ff88085efe7ec8 0000000000000002 fffffffffffffffb 00007f528effd000 ffff88085efe7f50 0000000000000001 ffff88085efe7ec8 ffffffff81350c1d ffff88085efe7ee8 ffff88107c7fd940 Call Trace: [<ffffffff81350b79>] __handle_sysrq+0x129/0x190 [<ffffffff81350c1d>] write_sysrq_trigger+0x3d/0x40 [<ffffffff811edc93>] proc_reg_write+0x43/0x70 [<ffffffff81189b84>] vfs_write+0xc4/0x1e0 [<ffffffff81189d86>] SyS_write+0x56/0xd0 [<ffffffff810e3d56>] ? __audit_syscall_exit+0x216/0x2c0 [<ffffffff8158e5d2>] system_call_fastpath+0x16/0x1b Code: f1 56 23 00 31 c0 eb ae 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 66 66 66 66 90 c7 05 9d 4f a2 00 01 00 00 00 0f ae f8 <c6> 04 25 00 00 00 00 01 c9 c3 55 48 89 e5 66 66 66 66 90 8d 47 RIP [<ffffffff81350206>] sysrq_handle_crash+0x16/0x20 RSP <ffff88085efe7e68> CR2: 0000000000000000 ---[ end trace 749cd8604d7ec7c5 ]--- Kernel panic - not syncing: Fatal exception Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff) ---[ end Kernel panic - not syncing: Fatal exception ------------[ cut here ]------------ WARNING: CPU: 2 PID: 1857 at arch/x86/kernel/smp.c:124 native_smp_send_reschedule+0x5f/0x70() Modules linked in: netconsole configfs drbd lru_cache libcrc32c bridge 8021q garp stp llc ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 vfat fat iTCO_wdt iTCO_vendor_support pcspkr sb_edac edac_core i2c_i801 lpc_ich mfd_core sg igb i2c_algo_bit i2c_core ptp pps_core ioatdma dca acpi_cpufreq wmi ext4(E) jbd2(E) mbcache(E) sd_mod(E) crc_t10dif(E) crct10dif_common(E) ahci(E) libahci(E) megaraid_sas(E) mpt2sas(E) scsi_transport_sas(E) raid_class(E) dm_mirror(E) dm_region_hash(E) dm_log(E) dm_mod(E) CPU: 2 PID: 1857 Comm: bash Tainted: G D E 3.15.0-rc1 #1 Hardware name: Thomas-Krenn.AG X9DR7/E-(J)LN4F/X9DR7/E-(J)LN4F, BIOS 3.0a 09/10/2013 000000000000007c ffff88087fd03d48 ffffffff81581d6d 000000000000007c 0000000000000000 ffff88087fd03d88 ffffffff8104f8ac ffff88087fd03da8 ffff88087fc12d00 0000000000000000 ffff88087fd12d00 ffff88007db2d200 Call Trace: <IRQ> [<ffffffff81581d6d>] dump_stack+0x49/0x5c [<ffffffff8104f8ac>] warn_slowpath_common+0x8c/0xc0 [<ffffffff8104f8fa>] warn_slowpath_null+0x1a/0x20 [<ffffffff810314ff>] native_smp_send_reschedule+0x5f/0x70 [<ffffffff8108898a>] trigger_load_balance+0x14a/0x1f0 [<ffffffff8107c447>] scheduler_tick+0xa7/0xe0 [<ffffffff8105b061>] update_process_times+0x61/0x80 [<ffffffff810bc449>] tick_sched_handle+0x39/0x80 [<ffffffff810bc674>] tick_sched_timer+0x54/0x90 [<ffffffff8107492e>] __run_hrtimer+0x7e/0x1c0 [<ffffffff810bc620>] ? tick_nohz_handler+0xc0/0xc0 [<ffffffff81074d1e>] hrtimer_interrupt+0x10e/0x260 [<ffffffff810349ab>] local_apic_timer_interrupt+0x3b/0x60 [<ffffffff815903d5>] smp_apic_timer_interrupt+0x45/0x60 [<ffffffff8158f18a>] apic_timer_interrupt+0x6a/0x70 <EOI> [<ffffffff81581bd1>] ? panic+0x1a7/0x1ea [<ffffffff81581bcd>] ? panic+0x1a3/0x1ea [<ffffffff81586df4>] oops_end+0xd4/0xf0 [<ffffffff8104299e>] no_context+0x12e/0x200 [<ffffffff81042b8d>] __bad_area_nosemaphore+0x11d/0x220 [<ffffffff81042cfe>] bad_area+0x4e/0x60 [<ffffffff815898e0>] __do_page_fault+0x430/0x490 [<ffffffff810a4d85>] ? call_console_drivers.clone.2+0xa5/0x100 [<ffffffff811192b9>] ? irq_work_queue+0x69/0xc0 [<ffffffff810a46a4>] ? wake_up_klogd+0x34/0x40 [<ffffffff810a51bd>] ? console_unlock+0x24d/0x280 [<ffffffff81589a1c>] do_page_fault+0xc/0x10 [<ffffffff815862a2>] page_fault+0x22/0x30 [<ffffffff81350206>] ? sysrq_handle_crash+0x16/0x20 [<ffffffff81350b79>] __handle_sysrq+0x129/0x190 [<ffffffff81350c1d>] write_sysrq_trigger+0x3d/0x40 [<ffffffff811edc93>] proc_reg_write+0x43/0x70 [<ffffffff81189b84>] vfs_write+0xc4/0x1e0 [<ffffffff81189d86>] SyS_write+0x56/0xd0 [<ffffffff810e3d56>] ? __audit_syscall_exit+0x216/0x2c0 [<ffffffff8158e5d2>] system_call_fastpath+0x16/0x1b ---[ end trace 749cd8604d7ec7c6 ]--- View attachment "dmesg.txt" of type "text/plain" (66207 bytes) View attachment "config.txt" of type "text/plain" (127141 bytes)
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