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Date: Thu, 18 Apr 2013 17:05:50 -0400 From: Sasha Levin <sasha.levin@...cle.com> To: chuansheng.liu@...el.com, Andrew Morton <akpm@...ux-foundation.org> CC: Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <peterz@...radead.org>, Fengguang Wu <fengguang.wu@...el.com>, eag0628@...il.com, Dave Jones <davej@...hat.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: WARNING: at kernel/smp.c:385 smp_call_function_many Hi guys, It seems that with commit "smp: Give WARN()ing when calling smp_call_function_many()/single() in serving irq" I'm getting a bunch of these: [ 467.250851] WARNING: at kernel/smp.c:385 smp_call_function_many+0xda/0x400() [ 467.251990] Modules linked in: [ 467.252496] CPU: 1 PID: 12638 Comm: trinity-child1 Tainted: G W 3.9.0-rc7-next-20130418-sasha-00013-g333a5d2 #340 [ 467.259691] 0000000000000009 ffff8800bb603d98 ffffffff83deed7a ffff8800bb603dd8 [ 467.261157] ffffffff81112ecb ffff88009d229fd8 ffffffff81148430 0000000000000001 [ 467.262478] ffffffff861922e0 0000000000000008 ffffffff861922e0 ffff8800bb603de8 [ 467.263758] Call Trace: [ 467.266447] <IRQ> [<ffffffff83deed7a>] dump_stack+0x19/0x1b [ 467.267437] [<ffffffff81112ecb>] warn_slowpath_common+0x6b/0xa0 [ 467.268418] [<ffffffff81148430>] ? hrtimer_wakeup+0x30/0x30 [ 467.269838] [<ffffffff81112f15>] warn_slowpath_null+0x15/0x20 [ 467.270844] [<ffffffff81197b8a>] smp_call_function_many+0xda/0x400 [ 467.272287] [<ffffffff8115c055>] ? sched_clock_local+0x25/0xa0 [ 467.273259] [<ffffffff81148430>] ? hrtimer_wakeup+0x30/0x30 [ 467.274590] [<ffffffff81148430>] ? hrtimer_wakeup+0x30/0x30 [ 467.275519] [<ffffffff81198001>] smp_call_function+0x41/0x80 [ 467.276801] [<ffffffff81148430>] ? hrtimer_wakeup+0x30/0x30 [ 467.277756] [<ffffffff81198099>] on_each_cpu+0x39/0x110 [ 467.278604] [<ffffffff81149197>] clock_was_set+0x17/0x20 [ 467.280198] [<ffffffff81149bb2>] run_hrtimer_softirq+0x32/0x40 [ 467.281530] [<ffffffff8111cb07>] __do_softirq+0x1d7/0x460 [ 467.282434] [<ffffffff8111cf26>] irq_exit+0x76/0xd0 [ 467.283243] [<ffffffff8109287a>] smp_apic_timer_interrupt+0x8a/0xa0 [ 467.284707] [<ffffffff83e369f2>] apic_timer_interrupt+0x72/0x80 [ 467.285674] <EOI> [<ffffffff81071ef5>] ? sched_clock+0x15/0x20 [ 467.287132] [<ffffffff83e31dd6>] ? add_preempt_count+0xa6/0xc0 [ 467.288089] [<ffffffff81a1db2c>] delay_tsc+0xac/0x120 [ 467.289342] [<ffffffff8127cbd8>] ? __mem_cgroup_count_vm_event+0x178/0x1a0 [ 467.290522] [<ffffffff81a1da19>] __const_udelay+0x29/0x30 [ 467.291425] [<ffffffff8113ee14>] __rcu_read_unlock+0x44/0xb0 [ 467.292829] [<ffffffff8127cbf5>] __mem_cgroup_count_vm_event+0x195/0x1a0 [ 467.293994] [<ffffffff8127ca60>] ? mem_cgroup_from_task+0xd0/0xd0 [ 467.295456] [<ffffffff81240e82>] handle_mm_fault+0x632/0x660 [ 467.296692] [<ffffffff8118b40a>] ? __lock_is_held+0x5a/0x80 [ 467.297647] [<ffffffff83e318f0>] __do_page_fault+0x570/0x5e0 [ 467.298622] [<ffffffff811d3e2d>] ? rcu_try_advance_all_cbs+0x3d/0xb0 [ 467.300213] [<ffffffff811d3f1d>] ? rcu_eqs_exit_common+0x7d/0x260 [ 467.301241] [<ffffffff811d4e0e>] ? rcu_eqs_enter_common+0x33e/0x3b0 [ 467.302760] [<ffffffff811d419c>] ? rcu_eqs_exit+0x9c/0xb0 [ 467.303649] [<ffffffff83e31992>] do_page_fault+0x32/0x50 [ 467.304526] [<ffffffff83e30f60>] do_async_page_fault+0x30/0xc0 [ 467.306556] [<ffffffff83e2e228>] async_page_fault+0x28/0x30 So either the new commit is broken, or hrtimer is horribly broken? Thanks, Sasha -- 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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