Re: mozilla+XFree86+Linux-2.1.x => HARD LOCKUP

Olaf Titz (
Sun, 06 Dec 1998 19:03:54 +0100

> These lockups happen while:
> 1. Mozilla tries to create (or map?) a transient window (popup or
> pulldown menu).
> 2. Mozilla receives Expose events.

I have often seen lockup in this situation too, both with Mozilla
(roughly late summer) and Netscape 4.0x; but in my case the X server
(SVGA with matrox driver) was not dead, it just didn't react to input
any more. Killing the offending application from a network login
restored the state back to normal.

> Nevertheless, I consider this as an obvious evidence that there is a bug
> in Linux kernel: application shouldn't be able to crash the system,
> kernel should throw an application away if it tries to do something nasty.

Yes, but X servers directly access the hardware, which makes them
inherently more dangerous.


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