xf86OpenConsole: VT_WAITACTIVE failed: Interrupted system call

Keith Packard keithp at keithp.com
Sun Oct 7 19:35:16 PDT 2007

On Sun, 2007-10-07 at 18:29 -0700, Linus Torvalds wrote:
> On Sun, 7 Oct 2007, Linus Torvalds wrote:
> > 
> > This seems to have been introduced by a "yum upgrade" on that system, but 
> > it migth easily be just very timing-sensitive (as mentioned, googling for 
> > that error message shows quite a number of hits). We've actually had 
> > kernel bugs in this area, and some changes lately, so I'm looking at 
> > whether that started triggering whatever causes it more reliably.
> In particular, we fixed a kernel race in console handling in 
> 8792f961ba8057d9f27987def3600253a3ba060f, and I am wondering whether the 
> extra serialization on the console semaphore we now do may be what changed 
> timings just enough to show an old bug on this machine. 
> The reason I say old bug is that google finds things like
> 	http://bugs.centos.org/view.php?id=2040
> 	https://lists.ubuntu.com/archives/ubuntu-bugs/2007-February/410399.html

These appear to be fixed by poking the X server into failing to
VT_WAITACTIVE on receipt of EINTR, so the proposed fix isn't obviously
the correct fix (not that it isn't a good idea, but it may be
symptomatic rather than causal)

keith.packard at intel.com
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