WARNING: at arch/x86/kernel/hpet.c:404 hpet_next_event+0x7d/0x90()

From: Thomas Backlund
Date: Tue Feb 02 2010 - 10:35:22 EST


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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