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Date: Fri, 12 Jan 2007 13:01:02 -0800 From: "Darrick J. Wong" <djwong@...ibm.com> To: Venkatesh Pallipadi <venkatesh.pallipadi@...el.com> CC: Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: [BUG] NMI watchdog lockups caused by mwait_idle Hi Venkatesh, I have an IBM IntelliStation Z30 with two Dempsey CPUs. When I try to boot 2.6.20-rc4 on it, the system prints messages about NMI watchdog lockups. git-bisect determined that the patch "[PATCH] x86-64: Fix interrupt race in idle callback (3rd try)" was the source of these problems, and I can work around the problem either by passing "idle=poll" to get avoid mwait_idle or by reverting the patch. Other non-Dempsey Xeon machines with mwait support do not exhibit these symptoms. I will try to determine if this is a bug specific to Dempsey CPUs or this particular type of machine. I suspect the latter, but I don't know enough about monitor/mwait to pursue this much further. What else can I do to diagnose this? --D ----------------- [ 81.794792] Parsing all Control Methods: [ 81.798710] Table [SSDT](id 002F) - 5 Objects with 0 Devices 2 Methods 0 Regions [ 81.806410] ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ PmRef] OemTableId [ Cpu0Ist] [20060707] [ 81.815967] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3]) [ 81.821837] ACPI: Processor [CPU0] (supports 8 throttling states) [ 81.831290] Parsing all Control Methods: [ 81.835283] Table [SSDT](id 0032) - 3 Objects with 0 Devices 2 Methods 0 Regions [ 81.842988] ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ PmRef] OemTableId [ Cpu1Ist] [20060707] [ 87.276183] NMI Watchdog detected LOCKUP on CPU 3 [ 87.280944] CPU 3 [ 87.283081] Modules linked in: processor fan unix [ 87.288109] Pid: 0, comm: swapper Not tainted 2.6.20-rc4-dic64 #0 [ 87.294253] RIP: 0010:[<ffffffff80149c75>] [<ffffffff80149c75>] cpu_idle+0x61/0xc7 [ 87.302039] RSP: 0018:ffff8100059ebed8 EFLAGS: 00000086 [ 87.307398] RAX: 00000000ffffffff RBX: ffffffff88015daf RCX: ffffffff80156564 [ 87.314574] RDX: ffff8100059ebec8 RSI: 0000000000000002 RDI: 0000000000000001 [ 87.321760] RBP: ffff8100059ebee8 R08: 0000000000000001 R09: 0000000000000001 [ 87.328942] R10: ffffffff80160cff R11: 0000000000000246 R12: fffffffffffffff7 [ 87.336125] R13: 0000000000000040 R14: 0000000000000246 R15: 0000000000000000 [ 87.343309] FS: 0000000000000000(0000) GS:ffff8100059970a0(0000) knlGS:0000000000000000 [ 87.351453] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b [ 87.357249] CR2: 0000000000602148 CR3: 0000000000101000 CR4: 00000000000006e0 [ 87.364435] Process swapper (pid: 0, threadinfo ffff8100059ea000, task ffff8100059a7040) [ 87.372577] Stack: ffff8100059ebee8 ffff8100052a5600 ffff8100059ebf48 ffffffff80174dc2 [ 87.380966] 0000000000000000 ffffffff80502e38 ffffffff80503038 000000000000037d [ 87.388684] 00000000000006e8 0000000000000000 0000000000000000 0000000000000000 [ 87.396148] Call Trace: [ 87.398896] [<ffffffff80174dc2>] start_secondary+0x46f/0x47e [ 87.404695] [ 87.406245] [ 87.406247] Code: 75 25 e8 dc 06 04 00 0f 09 0f ae f0 65 48 8b 14 25 08 00 00 [ 87.416355] <3>BUG: sleeping function called from invalid context at /home/djwong/linux-2.6.20-rc4-dic94xx/kernel/rwsem.c:20 [ 87.427809] in_atomic():1, irqs_disabled():0 [ 87.432130] no locks held by swapper/0. [ 87.436015] [ 87.436017] Call Trace: [ 87.440072] <NMI> [<ffffffff8019f84e>] debug_show_held_locks+0x9/0xb [ 87.446718] [<ffffffff8010ba32>] __might_sleep+0xc6/0xc8 [ 87.452170] [<ffffffff8019da22>] down_read+0x1d/0x45 [ 87.457276] [<ffffffff8019556d>] blocking_notifier_call_chain+0x1b/0x41 [ 87.464029] [<ffffffff8018cabc>] profile_task_exit+0x15/0x17 [ 87.469824] [<ffffffff80114b87>] do_exit+0x25/0x870 [ 87.474844] [<ffffffff801646ff>] oops_end+0x42/0x62 [ 87.479863] [<ffffffff80164a05>] sync_regs+0x0/0x71 [ 87.484883] [<ffffffff801650ac>] nmi_watchdog_tick+0x156/0x240 [ 87.490856] [<ffffffff80164c07>] default_do_nmi+0x81/0x1c6 [ 87.496480] [<ffffffff801651c2>] do_nmi+0x2c/0x40 [ 87.501326] [<ffffffff801645ef>] nmi+0x7f/0x90 [ 87.505920] [<ffffffff88015daf>] :processor:acpi_processor_idle+0x0/0x4ad [ 87.512852] [<ffffffff80160cff>] __sched_text_start+0xa7f/0xaba [ 87.518905] [<ffffffff80156564>] mwait_idle+0x47/0x4c [ 87.524097] [<ffffffff80149c75>] cpu_idle+0x61/0xc7 [ 87.529116] <<EOE>> [<ffffffff80174dc2>] start_secondary+0x46f/0x47e [ 87.535770] [ 87.537315] Kernel panic - not syncing: Attempted to kill the idle task! [ 87.537315] Kernel panic - not syncing: Attempted to kill the idle task! [ 87.544064] NMI Watchdog detected LOCKUP on CPU 2 [ 92.609986] CPU 2 [ 92.612110] Modules linked in: processor fan unix [ 92.617096] Pid: 0, comm: swapper Not tainted 2.6.20-rc4-dic64 #0 [ 92.623230] RIP: 0010:[<ffffffff80149ca9>] [<ffffffff80149ca9>] cpu_idle+0x95/0xc7 [ 92.630998] RSP: 0018:ffff8100059b9ed8 EFLAGS: 00000046 [ 92.636358] RAX: 0000000000000000 RBX: ffffffff88015daf RCX: ffffffff80156564 [ 92.643533] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001 [ 92.650708] RBP: ffff8100059b9ee8 R08: 0000000000000001 R09: 0000000000000001 [ 92.657883] R10: ffffffff80166fbd R11: 0000000000000070 R12: ffffffffffffffe6 [ 92.665057] R13: 0000000000000040 R14: 0000000000000246 R15: 0000000000000000 [ 92.672233] FS: 0000000000000000(0000) GS:ffff810005997858(0000) knlGS:0000000000000000 [ 92.680368] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b [ 92.686156] CR2: 000000000060c270 CR3: 0000000000101000 CR4: 00000000000006e0 [ 92.693334] Process swapper (pid: 0, threadinfo ffff8100059b8000, task ffff81000599c080) [ 92.701467] Stack: ffff8100059b9ee8 ffff81000529b100 ffff8100059b9f48 ffffffff80174dc2 [ 92.709813] 0000000000000000 ffffffff80502e30 ffffffff80503030 00000000000002d8 [ 92.717490] 000000000000057c 0000000000000000 0000000000000000 0000000000000000 [ 92.724926] Call Trace: [ 92.727668] [<ffffffff80174dc2>] start_secondary+0x46f/0x47e [ 92.733457] [ 92.735000] [ 92.735000] Code: 65 48 8b 04 25 10 00 00 00 8b 80 38 e0 ff ff a8 08 0f 84 6f [ 92.745073] NMI Watchdog detected LOCKUP on CPU 7 [ 98.269459] CPU 7 [ 98.271582] Modules linked in: processor fan unix [ 98.276578] Pid: 0, comm: swapper Not tainted 2.6.20-rc4-dic64 #0 [ 98.282719] RIP: 0010:[<ffffffff80149c50>] [<ffffffff80149c50>] cpu_idle+0x3c/0xc7 [ 98.290487] RSP: 0018:ffff8100bf8f7ed8 EFLAGS: 00000046 [ 98.295846] RAX: ffff8100052ce400 RBX: ffffffff88015daf RCX: ffffffff80156564 [ 98.303023] RDX: ffff810084d78200 RSI: 0000000000000002 RDI: 0000000000000001 [ 98.310207] RBP: ffff8100bf8f7ee8 R08: 0000000000000001 R09: 0000000000000001 [ 98.317392] R10: ffffffff80166fbd R11: ffff8100052d0fe0 R12: ffffffffffffffc8 [ 98.324573] R13: 0000000000000040 R14: 0000000000000246 R15: 0000000000000000 [ 98.331748] FS: 0000000000000000(0000) GS:ffff8100bf82ee48(0000) knlGS:0000000000000000 [ 98.339893] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b [ 98.345689] CR2: 000000000043d360 CR3: 0000000000101000 CR4: 00000000000006e0 [ 98.352866] Process swapper (pid: 0, threadinfo ffff8100bf8f6000, task ffff8100bf8d6080) [ 98.361007] Stack: ffff8100bf8f7ee8 ffff8100052cea00 ffff8100bf8f7f48 ffffffff80174dc2 [ 98.369396] 0000000000000000 ffffffff80502e58 ffffffff80503058 0000000000000398 [ 98.377108] 00000000000006c1 0000000000000000 0000000000000000 0000000000000000 [ 98.384579] Call Trace: [ 98.387326] [<ffffffff80174dc2>] start_secondary+0x46f/0x47e [ 98.393117] [ 98.394660] [ 98.394661] Code: 48 8b 1d b1 03 42 00 48 c7 c0 1b a6 16 80 48 85 db 48 0f 44 (repeat until the machine reboots) - 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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