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David NaylorAug 3, 2010 8:49 am 
Subject:panic: bad stray interrupt | No usable event timer found!
From:David Naylor (nayl@gmail.com)
Date:Aug 3, 2010 8:49:32 am
List:org.freebsd.freebsd-current

Hi,

When booting an Acer Aspire 2920 I am getting panics with a recent kernel (2010/07/28). The kernel boots successfully from cvsup date=2010.06.20.00.00.00.

The kernel panics with:

uhci0: <Intel 82801H (ICH8) USB controller USB-D> port 0x1820-0x183f irq 20 at device 26.0 on pci0 panic: bad stray interrupt cpuid = 0 <snip/> db> bt Trading pid 0 tid 10000 kdb_enter() intr_event_handle() intr_execute_handler() Xapic_isr1() --- interrupt, rip = 0xffffffff807d904e, rsp = 0xffffffff8108c5e0, rbp = 0xffffffff8108c680 --- uma_zalloc_arg() malloc() intr_event_add_handler() intr_add_handler() pci_setup_intr() bus_setup_intr() uhci_pci_attach() device_attach() bus_generic_attach() acpi_pci_attach() device_attach() bus_generic_attach() acpi_pcib_attach() acpi_pcib_acpi_attach() device_attach() bus_generic_attach() acpi_attach() device_attach() bus_generic_attach() nexus_acpi_attach() device_attach() bus_generic_new_pass() bus_set_pass() configure() mi_startup() btext()

If the kernel is booted in safe mode:

Timecounter "TSC" frequency 2194547740 Hz quality 800 panic: No usable event timer found! cpuid = 0 <snip/> db> bt Tracing pid 0 tid 10000 kdb_enter() panic() cpu_initclocks_bsp() initclocks() mi_startup() btext()

Regards,

David