linux-kernel - WARNING: at arch/x86/kernel/hpet.c:404 hpet_next

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Date:	Tue, 02 Feb 2010 17:35:11 +0200
From:	Thomas Backlund <tmb@...driva.org>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	linux-acpi@...r.kernel.org
Subject: WARNING: at arch/x86/kernel/hpet.c:404 hpet_next_event+0x7d/0x90()

This is still happening on 2.6.33-rc6-git1 running x86_64 kernel

HW is a Core i7-860 on an ASUS P7P55D Deluxe m/b

I've seen this since atleast 2.6.31 series kernels...

I seem to have seen other reports about this, and some errata fix & 
patch for this, but I cant find it right now...

> [   11.668507] ------------[ cut here ]------------
> [   11.668514] WARNING: at arch/x86/kernel/hpet.c:404 hpet_next_event+0x7d/0x90()
> [   11.668516] Hardware name: System Product Name
> [   11.668517] hpet: compare register read back failed.
> [   11.668518] Modules linked in: processor(+) iTCO_vendor_support button pata_jmicron dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod ata_piix ahci libata sd_mod scsi_mod crc_t10dif ext4 jbd2 crc16 uhci_hcd ohci_hcd ehci_hcd usbhid hid usbcore
> [   11.668530] Pid: 0, comm: swapper Not tainted 2.6.33-tmb-desktop-0.rc6.1.2mdv #1
> [   11.668532] Call Trace:
> [   11.668536]  [<ffffffff810400a8>] warn_slowpath_common+0x78/0xb0
> [   11.668538]  [<ffffffff8104013c>] warn_slowpath_fmt+0x3c/0x40
> [   11.668541]  [<ffffffff81022b5d>] hpet_next_event+0x7d/0x90
> [   11.668543]  [<ffffffff81022b8b>] hpet_legacy_next_event+0xb/0x10
> [   11.668547]  [<ffffffff810642d9>] clockevents_program_event+0x59/0xa0
> [   11.668549]  [<ffffffff81065740>] tick_dev_program_event+0x40/0xd0
> [   11.668553]  [<ffffffff810650c6>] tick_broadcast_oneshot_control+0x116/0x120
> [   11.668556]  [<ffffffff810648f5>] tick_notify+0x315/0x450
> [   11.668560]  [<ffffffff811d537c>] ? acpi_hw_read+0x51/0x58
> [   11.668563]  [<ffffffff8105ce57>] notifier_call_chain+0x47/0x90
> [   11.668566]  [<ffffffff8105cf41>] raw_notifier_call_chain+0x11/0x20
> [   11.668569]  [<ffffffff810640e2>] clockevents_notify+0x32/0x170
> [   11.668575]  [<ffffffffa0196f28>] lapic_timer_state_broadcast+0x41/0x43 [processor]
> [   11.668580]  [<ffffffffa0197436>] acpi_idle_enter_bm+0x15c/0x28a [processor]
> [   11.668585]  [<ffffffff8125bccb>] cpuidle_idle_call+0x9b/0x100
> [   11.668589]  [<ffffffff81001933>] cpu_idle+0x63/0xc0
> [   11.668592]  [<ffffffff8130a47d>] start_secondary+0x18b/0x18f
> [   11.668595] ---[ end trace 34f793092b044afa ]---

--
Thomas

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