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Date: Thu, 11 Nov 2010 18:09:21 +0800 From: Wu Fengguang <fengguang.wu@...el.com> To: LKML <linux-kernel@...r.kernel.org> Cc: Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org> Subject: Re: [BUG 2.6.27-rc1] find_busiest_group() LOCKUP On Thu, Nov 11, 2010 at 06:06:28PM +0800, Wu Fengguang wrote: > Greetings, > > I run into this kernel panic since 2.6.27-rc1. 2.6.36 boots OK. > It's not yet fixed in 2.6.37-rc1-next-20101110. I can conveniently > test any debug patches. > > Thanks, > Fengguang > --- > > 2.6.37-rc1-next-20101110 boot log 2.6.37-rc1 boot log, almost the same but stuck in find_next_bit(): [ 0.000000] console [ttyS0] enabled, bootconsole disabled [ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.000000] ... MAX_LOCK_DEPTH: 48 [ 0.000000] ... MAX_LOCKDEP_KEYS: 8191 [ 0.000000] ... CLASSHASH_SIZE: 4096 [ 0.000000] ... MAX_LOCKDEP_ENTRIES: 16384 [ 0.000000] ... MAX_LOCKDEP_CHAINS: 32768 [ 0.000000] ... CHAINHASH_SIZE: 16384 [ 0.000000] memory used by lock dependency info: 6367 kB [ 0.000000] per task-struct memory footprint: 2688 bytes [ 0.000000] allocated 62914560 bytes of page_cgroup [ 0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups [ 0.000000] Fast TSC calibration using PIT [ 0.004000] Detected 2666.516 MHz processor. [ 0.000028] Calibrating delay loop (skipped), value calculated using timer frequency.. 5333.03 BogoMIPS (lpj=10666064) [ 0.010995] pid_max: default: 32768 minimum: 301 [ 0.018236] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes) [ 0.028644] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes) [ 0.036764] Mount-cache hash table entries: 256 [ 0.042487] Initializing cgroup subsys debug [ 0.046892] Initializing cgroup subsys ns [ 0.051030] ns_cgroup deprecated: consider using the 'clone_children' flag without the ns_cgroup. [ 0.060093] Initializing cgroup subsys cpuacct [ 0.064674] Initializing cgroup subsys memory [ 0.069234] Initializing cgroup subsys devices [ 0.073811] Initializing cgroup subsys freezer [ 0.078386] Initializing cgroup subsys blkio [ 0.082905] CPU: Physical Processor ID: 0 [ 0.087044] CPU: Processor Core ID: 0 [ 0.090840] mce: CPU supports 9 MCE banks [ 0.094988] CPU0: Thermal monitoring enabled (TM1) [ 0.099921] using mwait in idle threads. [ 0.103969] Performance Events: PEBS fmt1+, Nehalem events, Intel PMU driver. [ 0.111449] ... version: 3 [ 0.115583] ... bit width: 48 [ 0.119802] ... generic registers: 4 [ 0.123937] ... value mask: 0000ffffffffffff [ 0.129373] ... max period: 000000007fffffff [ 0.134816] ... fixed-purpose events: 3 [ 0.138957] ... event mask: 000000070000000f [ 0.145671] ACPI: Core revision 20101013 [ 0.171011] ftrace: allocating 29456 entries in 116 pages [ 0.185896] Setting APIC routing to flat [ 0.190577] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.236384] CPU0: Genuine Intel(R) CPU 000 @ 2.67GHz stepping 04 [ 0.349319] lockdep: fixing up alternatives. [ 0.353960] Booting Node 0, Processors #1lockdep: fixing up alternatives. [ 0.472080] #2lockdep: fixing up alternatives. [ 0.588082] #3lockdep: fixing up alternatives. [ 0.704042] #4lockdep: fixing up alternatives. [ 0.820145] Ok. [ 0.822112] Booting Node 1, Processors #5lockdep: fixing up alternatives. [ 0.940140] Ok. [ 0.942107] Booting Node 0, Processors #6lockdep: fixing up alternatives. [ 1.060128] Ok. [ 1.062100] Booting Node 1, Processors #7 Ok. [ 1.176824] Brought up 8 CPUs [ 1.179908] Total of 8 processors activated (42666.32 BogoMIPS). [ 1.186105] Testing NMI watchdog ... OK. [ 6.770490] BUG: NMI Watchdog detected LOCKUP on CPU0, ip ffffffff815854e7, registers: [ 6.778665] CPU 0 [ 6.780556] Modules linked in: [ 6.784094] [ 6.785702] Pid: 1, comm: swapper Not tainted 2.6.37-rc1 #10 X8DTN/X8DTN [ 6.792523] RIP: 0010:[<ffffffff815854e7>] [<ffffffff815854e7>] find_next_bit+0x117/0x160 [ 6.801043] RSP: 0018:ffff8801b9687870 EFLAGS: 00000006 [ 6.806475] RAX: 0000000000000008 RBX: ffff8800bac0e410 RCX: 0000000000000000 [ 6.813724] RDX: 0000000000000008 RSI: 0000000000000008 RDI: ffff8800bac0e410 [ 6.820977] RBP: ffff8801b9687870 R08: 0000000000000000 R09: 00000000001d2c80 [ 6.828232] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800ba40de48 [ 6.835485] R13: ffff8801b9687b0c R14: 0000000000000000 R15: 00000000001d2c80 [ 6.842740] FS: 0000000000000000(0000) GS:ffff8800ba400000(0000) knlGS:0000000000000000 [ 6.851015] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 6.856873] CR2: 0000000000000000 CR3: 0000000002041000 CR4: 00000000000006f0 [ 6.864121] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 6.871375] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 6.878630] Process swapper (pid: 1, threadinfo ffff8801b9686000, task ffff8800b3398000) [ 6.886904] Stack: [ 6.889029] ffff8801b9687890 ffffffff81584d99 0000000000000007 00000000001d2c80 [ 6.896861] ffff8801b9687a40 ffffffff810a9fca 0000000000000001 ffff8801b96879e0 [ 6.904696] ffff8801b96879b0 ffff8801bfdd2c80 0000000000000007 0000000000000000 [ 6.912530] Call Trace: [ 6.915094] [<ffffffff81584d99>] cpumask_next_and+0x39/0x80 [ 6.920873] [<ffffffff810a9fca>] find_busiest_group+0x24a/0x1200 [ 6.927087] [<ffffffff810b08cf>] load_balance+0xdf/0xa60 [ 6.932608] [<ffffffff81c49b13>] ? schedule+0xdb3/0xee0 [ 6.938040] [<ffffffff81c49c29>] schedule+0xec9/0xee0 [ 6.943293] [<ffffffff81c4a69c>] schedule_timeout+0x30c/0x450 [ 6.949246] [<ffffffff81106a6b>] ? trace_hardirqs_off+0x1b/0x30 [ 6.955367] [<ffffffff810f606d>] ? local_clock+0x9d/0xb0 [ 6.960888] [<ffffffff81c4f0bc>] ? _raw_spin_unlock_irq+0x4c/0x70 [ 6.967188] [<ffffffff81c49fc5>] wait_for_common+0x185/0x220 [ 6.973055] [<ffffffff810b2250>] ? default_wake_function+0x0/0x30 [ 6.979349] [<ffffffff81c4a1b4>] wait_for_completion+0x24/0x30 [ 6.985388] [<ffffffff810eba42>] kthread_create+0xc2/0x160 [ 6.991075] [<ffffffff810e3c40>] ? rescuer_thread+0x0/0x2a0 [ 6.996856] [<ffffffff810a17cf>] ? complete+0x2f/0x80 [ 7.002115] [<ffffffff8110a35b>] ? trace_hardirqs_on+0x1b/0x30 [ 7.008152] [<ffffffff81212b50>] ? kmem_cache_alloc_notrace+0x160/0x1c0 [ 7.014971] [<ffffffff810e37d5>] __alloc_workqueue_key+0x465/0x8d0 [ 7.021358] [<ffffffff823c0a21>] cpuset_init_smp+0x5d/0x82 [ 7.027052] [<ffffffff8239f3fe>] kernel_init+0x1e7/0x337 [ 7.032572] [<ffffffff810529e4>] kernel_thread_helper+0x4/0x10 [ 7.038614] [<ffffffff81c4f690>] ? restore_args+0x0/0x30 [ 7.044133] [<ffffffff8239f217>] ? kernel_init+0x0/0x337 [ 7.049652] [<ffffffff810529e0>] ? kernel_thread_helper+0x0/0x10 [ 7.055857] Code: d2 75 ce 48 83 c7 08 48 83 e8 40 49 83 c0 40 48 ff 05 be 59 a5 01 e9 2a ff ff ff 66 0f 1f 84 00 00 00 00 00 48 ff 05 99 59 a5 01 <c9> c3 0f 1f 80 00 00 00 00 49 8d 04 00 48 ff 05 bd 59 a5 01 c9 [ 7.078960] ---[ end trace 4eaa2a86a8e2da22 ]--- [ 7.083696] Kernel panic - not syncing: Non maskable interrupt [ 7.089643] Pid: 1, comm: swapper Tainted: G D 2.6.37-rc1 #10 [ 7.096283] Call Trace: [ 7.098850] <NMI> [<ffffffff81c4889e>] panic+0xad/0x260 [ 7.104435] [<ffffffff81c4f17d>] ? _raw_spin_unlock_irqrestore+0x9d/0xb0 [ 7.111338] [<ffffffff81c50e32>] die_nmi+0x182/0x1a0 [ 7.116511] [<ffffffff81c51a4a>] nmi_watchdog_tick+0x1ea/0x290 [ 7.122542] [<ffffffff81c502c0>] do_nmi+0x230/0x450 [ 7.127620] [<ffffffff81c4fbc0>] nmi+0x20/0x39 [ 7.132267] [<ffffffff815854e7>] ? find_next_bit+0x117/0x160 [ 7.138124] <<EOE>> [<ffffffff81584d99>] cpumask_next_and+0x39/0x80 [ 7.144747] [<ffffffff810a9fca>] find_busiest_group+0x24a/0x1200 [ 7.150956] [<ffffffff810b08cf>] load_balance+0xdf/0xa60 [ 7.156474] [<ffffffff81c49b13>] ? schedule+0xdb3/0xee0 [ 7.161899] [<ffffffff81c49c29>] schedule+0xec9/0xee0 [ 7.167151] [<ffffffff81c4a69c>] schedule_timeout+0x30c/0x450 [ 7.173099] [<ffffffff81106a6b>] ? trace_hardirqs_off+0x1b/0x30 [ 7.179224] [<ffffffff810f606d>] ? local_clock+0x9d/0xb0 [ 7.184737] [<ffffffff81c4f0bc>] ? _raw_spin_unlock_irq+0x4c/0x70 [ 7.191032] [<ffffffff81c49fc5>] wait_for_common+0x185/0x220 [ 7.196898] [<ffffffff810b2250>] ? default_wake_function+0x0/0x30 [ 7.203200] [<ffffffff81c4a1b4>] wait_for_completion+0x24/0x30 [ 7.209239] [<ffffffff810eba42>] kthread_create+0xc2/0x160 [ 7.214926] [<ffffffff810e3c40>] ? rescuer_thread+0x0/0x2a0 [ 7.220707] [<ffffffff810a17cf>] ? complete+0x2f/0x80 [ 7.225966] [<ffffffff8110a35b>] ? trace_hardirqs_on+0x1b/0x30 [ 7.231999] [<ffffffff81212b50>] ? kmem_cache_alloc_notrace+0x160/0x1c0 [ 7.238824] [<ffffffff810e37d5>] __alloc_workqueue_key+0x465/0x8d0 [ 7.245209] [<ffffffff823c0a21>] cpuset_init_smp+0x5d/0x82 [ 7.250902] [<ffffffff8239f3fe>] kernel_init+0x1e7/0x337 [ 7.256422] [<ffffffff810529e4>] kernel_thread_helper+0x4/0x10 [ 7.262455] [<ffffffff81c4f690>] ? restore_args+0x0/0x30 [ 7.267974] [<ffffffff8239f217>] ? kernel_init+0x0/0x337 [ 7.273486] [<ffffffff810529e0>] ? kernel_thread_helper+0x0/0x10 [ 8.307196] Rebooting in 10 seconds.. -- 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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