kern/57603: new bktr driver: freeze on SMP machine

Simun Mikecin sime at
Sun Oct 5 03:30:23 PDT 2003

>Number:         57603
>Category:       kern
>Synopsis:       new bktr driver: freeze on SMP machine
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Oct 05 03:30:21 PDT 2003
>Originator:     Simun Mikecin
>Release:        FreeBSD 5.1-CURRENT i386
System: FreeBSD 5.1-CURRENT FreeBSD 5.1-CURRENT #1: Sat Oct 4 11:10:39 CEST 2003 root at i386
	Using 5.1-CURRENT kernel as of Oct 2 2003.
	Kernel compiled with:
	  device bktr
	  device iicbus
	  device iicbb
	  device smbus
	bktr driver TV-card detection in dmesg:
	  bktr0: <BrookTree 878> mem 0xf4100000-0xf4100fff irq 16 at device 1.0 on pci3
	  bktr0: Hauppauge Model 44354 A321
	  bktr0: Detected a MSP3415D-B3 at 0x80
	  bktr0: Hauppauge WinCast/TV, Philips FR1216 PAL FM tuner, msp3400c stereo, remote control.
	Computer freezes if using SMP on HT-enabled uniprocessor with
	enabled 2 logical cpus. If I disable logical processors (but still
	use SMP kernel) it works OK. I haven't tested it on a real
	multiprocessor machine.
	you can reproduce a system freeze like this:
	 1. start fxtv (port multimedia/fxtv)
	 2. close fxtv
	 3. start fxtv for the second time
	None that I know of.

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