Disappearing userland output with -current

Michal Mertl mime at traveller.cz
Thu Jun 14 12:52:54 UTC 2007

Gary Jennejohn píše v čt 14. 06. 2007 v 13:14 +0200:
> I'm observing a strange problem with a -current i386 box (with SMP)
> built on Wed Jun 13 20:34:11 CEST 2007 after a cvsup and haven't seen
> anyone else reporting it.
> The problem occurs whenever the output from the boot phase is garbled,
> almost always because this output:
> 	SMP: AP CPU #1 Launched!
> messes up this output (or similar):
> 	cd0: cd present [2222160 x 2048 byte records]
> The symptom is that _all_ userland output disappears, which makes it
> rather difficult to do anything. I'm forced to reboot the box until
> the boot output isn't trashed.
> If I break into ddb then all the output becomes visible, but leaving
> ddb then results in no userland output appearing again.
> I noticed this problem for the very first time after gcc42 was imported.
> In all the years I've been using FreeBSD (since 1993) I've never seen
> any behavior like this before. This leads me to strongly suspect some
> fallout from gcc42.
> Has anyone else seen this?
> --- 
> Gary Jennejohn / garyjATjennejohnDOTorg gjATfreebsdDOTorg
> garyjATdenxDOTde

Just a "me too" on amd64 SMP.

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