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Date: Tue, 23 Dec 2008 22:36:30 +0100 From: Ingo Molnar <mingo@...e.hu> To: Yinghai Lu <yinghai@...nel.org>, Ken Chen <kenchen@...gle.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Peter Zijlstra <a.p.zijlstra@...llo.nl> Subject: Re: panic with tg_shares_up again? * Yinghai Lu <yinghai@...nel.org> wrote: > yesterday's tip on one 32 cores sytem Does reverting this: | commit d71f5a7c8bf9cd7c74159a53e522e363f2eddaf5 | Author: Ken Chen <kenchen@...gle.com> | Date: Fri Dec 19 10:11:50 2008 -0800 | | sched: fix uneven per-cpu task_group share distribution solve the crash? > > [ 22.048032] calling hpet_late_init+0x0/0x19c @ 1 > [ 22.052037] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 31 > [ 22.057035] hpet0: 3 comparators, 32-bit 25.000000 MHz counter > [ 22.068047] divide error: 0000 [#1] SMP > [ 22.071994] last sysfs file: > [ 22.072030] CPU 8 > [ 22.072030] Modules linked in: > [ 22.072030] Pid: 0, comm: swapper Not tainted > 2.6.28-rc8-tip-01347-gab88ef6-dirty #327 > [ 22.072030] RIP: 0010:[<ffffffff8025066e>] [<ffffffff8025066e>] > tg_shares_up+0x100/0x1d1 > [ 22.072030] RSP: 0018:ffff882024a87d48 EFLAGS: 00010246 > [ 22.072030] RAX: 0000000000618800 RBX: ffff880028081680 RCX: ffff88084421d680 > [ 22.072030] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 > [ 22.072030] RBP: ffff882024a87db8 R08: 0000000000000080 R09: ffff88104441e460 > [ 22.072030] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff81117da0 > [ 22.072030] R13: 0000000000000040 R14: 0000000000000004 R15: 0000000000000800 > [ 22.072030] FS: 0000000000000000(0000) GS:ffff881824da7980(0000) > knlGS:0000000000000000 > [ 22.072030] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > [ 22.072030] CR2: 0000000000000000 CR3: 0000000000201000 CR4: 00000000000006e0 > [ 22.072030] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 22.072030] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > [ 22.072030] Process swapper (pid: 0, threadinfo ffff88182467c000, > task ffff880824af9650) > [ 22.072030] Stack: > [ 22.072030] 0000000000000020 ffffffff810ed680 0000000000001000 > 0000000000000000 > [ 22.072030] 0000000000000000 ffff88104441e460 0000000000000283 > 00000004810ee000 > [ 22.072030] 0000000000000000 ffffffff81117da0 ffff88104441e360 > ffffffff8025056e > [ 22.072030] Call Trace: > [ 22.072030] <IRQ> <0> [<ffffffff8025056e>] ? tg_shares_up+0x0/0x1d1 > [ 22.072030] [<ffffffff8024a9e1>] ? tg_nop+0x0/0x8 > [ 22.072030] [<ffffffff8024cd78>] walk_tg_tree+0x74/0x8d > [ 22.072030] [<ffffffff80254063>] update_shares+0x48/0x4d > [ 22.072030] [<ffffffff80254478>] rebalance_domains+0x161/0x53c > [ 22.072030] [<ffffffff8025489c>] run_rebalance_domains+0x49/0xe4 > [ 22.072030] [<ffffffff8026020a>] __do_softirq+0x83/0x145 > [ 22.072030] [<ffffffff8022a15c>] call_softirq+0x1c/0x28 > [ 22.072030] [<ffffffff8022b0a0>] do_softirq+0x34/0x76 > [ 22.072030] [<ffffffff8025ff1b>] irq_exit+0x3f/0x82 > [ 22.072030] [<ffffffff8023a75d>] smp_apic_timer_interrupt+0x93/0xac > [ 22.072030] [<ffffffff80229b73>] apic_timer_interrupt+0x13/0x20 > [ 22.072030] <EOI> <0>Code: 44 24 08 4a 8b 0c f0 48 85 c9 0f 84 b6 > 00 00 00 49 8b 44 24 10 4a 8b 04 f0 48 8b 80 a8 00 00 00 48 85 c0 74 > 10 49 0f af c7 31 d2 <48> f7 75 b0 48 89 45 d0 eb 11 4c 89 f8 31 d2 48 > c7 45 d0 00 00 > [ 22.072030] RIP [<ffffffff8025066e>] tg_shares_up+0x100/0x1d1 > [ 22.072030] RSP <ffff882024a87d48> -- 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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