kern/71958: 5.3-BETA5 + PREEMPTION on VMware ESX 2.1.1 freeze at boot

Henri Hennebert hlh at
Tue Sep 21 00:30:24 PDT 2004

>Number:         71958
>Category:       kern
>Synopsis:       5.3-BETA5 + PREEMPTION on VMware ESX 2.1.1 freeze at boot
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Sep 21 07:30:23 GMT 2004
>Originator:     Henri Hennebert
>Release:        5.3-BETA5
FreeBSD 5.3-BETA5 FreeBSD 5.3-BETA5 #0: Mon Sep 20 14:31:14 CEST 2004     root at  i386
I am running FreeBSD 5.3-BETA on a virtual machine under VMware ESX 2.1.1.
The Virtual machine has *ONE* processor, I'm not sure that PREEMPTION is allow in this case; anyway I post this bug in case it may be usefull...

If I add `option PREEMPTION' to the kernel configuration of 5.3-BETA5,
the boot process freeze. Without this option all is OK. Here is
the dmesg of the boot and the freeze point:

Timecounter "TSC" frequency 2192468776 Hz quality 800
Timecounters tick every 10.000 msec
ipfw2 initialized, divert enabled, rule-based forwarding disabled, default to deny, logging disabled


ATAPI_RESET time = 0us
acd0: CDROM <VMware Virtual IDE CDROM Drive/00000001> at ata0-master UDMA33
Waiting 5 seconds for SCSI devices to settle
da0 at mpt0 bus 0 target 0 lun 0
da0: <VMware Virtual disk 1.0> Fixed Direct Access SCSI-2 device
da0: 320.000MB/s transfers (160.000MHz, offset 127, 16bit), Tagged Queueing Enabled
da0: 6000MB (12288000 512 byte sectors: 255H 63S/T 764C)

Don't use option PREEMPTION

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