mozilla+XFree86+Linux-2.1.x => HARD LOCKUP (addition)

QingLong (
Sat, 5 Dec 1998 15:47:02 +0300

I wrote recently:
| Mozilla somehow screws X server so that it locks up Linux totally.
| All 2.1.x kernels I've tried since 2.1 thread started suffer from this.
| Mozilla appears to be the only beast able to make Xserver to screw Linux.
| Is it running on localhost or on a remote one makes no difference:
| symptoms are quite the same: system completely freezes.
| These lockups happen while:
| 1. Mozilla tries to create (or map?) a transient window (popup or
| pulldown menu).
| 2. Mozilla receives Expose events.
| This happens approximately once a week, but sometimes (e.g. today) this shit
| happens several times per day.
| Of course, there is a bug somewhere in XFree86 X server (S3V one).
| 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 just throw an application away if it tries to do something
| nasty.
I just discovered a dependence: running DMA-active application
(here I tried a borrowed SoundBlaster card and `splay') increases
freezing probablity dramatically.

BTW, the same mozilla has never locked sillycon grafix indy (irix 6.x).

Happy hacking!


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