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Message-Id: <1192683620.7390.8.camel@Homer.simpson.net> Date: Thu, 18 Oct 2007 07:00:20 +0200 From: Mike Galbraith <efault@....de> To: LKML <linux-kernel@...r.kernel.org> Subject: [serial?] 6.2.23.git.today poking SysRq-T triggers NMI watchdog Greetings, When shutting down this kernel, my box is hanging when the init scripts tries to set the hardware clock, so I fired up my serial console box, and set nmi_watchdog=2, but nothing happened. When I poked SysRq-T however, I received the below. I also notice that I can't login via serial console with this kernel. (the taint is due to previously posted oops loading microcode module) [ 257.624720] BUG: NMI Watchdog detected LOCKUP on CPU0, eip c04c00ed, registers: [ 257.632036] Modules linked in: radeon drm snd_pcm_oss w83781d hwmon_vid hwmon eeprom snd_mixer_oss snd_seq_midi snd_seq_midi_event microcode snd_seq edd button battery ac ip6t_REJECT xt_tcpudp ipt_REJECT xt_state iptable_mangle iptable_nat nf_nat iptable_filter ip6table_mangle nf_conntrack_ipv4 nf_conntrack ip_tables ip6table_filter ip6_tables x_tables nls_iso8859_1 nls_cp437 nls_utf8 snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm prism54 snd_timer snd_mpu401 snd_mpu401_uart snd_rawmidi snd_seq_device intel_agp snd agpgart snd_page_alloc soundcore i2c_i801 fan thermal processor [ 257.683837] CPU: 0 [ 257.683838] EIP: 0060:[<c04c00ed>] Tainted: G D VLI [ 257.683840] EFLAGS: 00000006 (2.6.23-smp-git #13) [ 257.696806] EIP is at _spin_lock_irqsave+0x51/0x66 [ 257.701589] eax: 00000000 ebx: c061ffa0 ecx: 00000027 edx: 00000002 [ 257.708369] esi: c068e000 edi: 00000074 ebp: c068ee60 esp: c068ee58 [ 257.715151] ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 [ 257.720980] Process swapper (pid: 0, ti=c068e000 task=c06083c0 task.ti=c0645000) [ 257.728193] Stack: c2d0c000 00000001 c068ee88 c033e493 c2d0c11c c068ee78 c2d0c000 00000002 [ 257.736679] c068ee80 c2d0c000 00000074 c2d0c000 c068ee98 c033e5ae 00000001 00000014 [ 257.745167] c068eec0 c0338658 4716e406 0002d6d1 01010004 c39c0c00 00000014 c0338325 [ 257.753654] Call Trace: [ 257.756288] [<c010514a>] show_trace_log_lvl+0x1a/0x30 [ 257.761450] [<c0105205>] show_stack_log_lvl+0xa5/0xca [ 257.766611] [<c0105426>] show_registers+0x1fc/0x33d [ 257.771599] [<c0105eb8>] die_nmi+0x86/0xd9 [ 257.775799] [<c011879c>] nmi_watchdog_tick+0x13b/0x140 [ 257.781038] [<c010623a>] do_nmi+0x80/0x253 [ 257.785240] [<c04c070b>] nmi_stack_correct+0x26/0x2b [ 257.790314] [<c033e493>] __handle_sysrq+0x1a/0x115 [ 257.795209] [<c033e5ae>] handle_sysrq+0x20/0x24 [ 257.799849] [<c0338658>] kbd_event+0x333/0x5cb [ 257.804397] [<c03beda1>] input_pass_event+0xb2/0xc3 [ 257.809384] [<c03bfa50>] input_handle_event+0x131/0x3b4 [ 257.814712] [<c03c084d>] input_event+0x54/0x67 [ 257.819266] [<c03c6005>] atkbd_interrupt+0x425/0x570 [ 257.824332] [<c03bba4a>] serio_interrupt+0x32/0x6c [ 257.829226] [<c03bc642>] i8042_interrupt+0x10a/0x23f [ 257.834300] [<c015988a>] handle_IRQ_event+0x2c/0x55 [ 257.839280] [<c015a9c1>] handle_edge_irq+0xbc/0x11d [ 257.844252] [<c0106e6b>] do_IRQ+0x79/0xce [ 257.848366] ======================= [ 257.851941] Code: d0 5b 5e 5d c3 52 9d 83 6e 14 01 8b 46 08 a8 04 75 22 8b 43 04 85 c0 75 12 c7 43 04 01 00 00 00 eb 09 8b 4b 04 85 c9 74 c0 f3 90 <0f> b6 03 84 c0 7e f0 eb b5 e8 cb ed ff ff 90 8d 74 26 00 eb d2 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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