[BUG] scheduling while atomic in mount.nfs4, current git

[Frank de Lange]

Hi'all,

Just a question: am I the only one who has problems with NFSv4 on Linus'
current tree? From at least 20071126 I get nothing but flashing
scroll-lock/caps-lock lights (Oops...) when I try to 'tab-complete' a
directory listing on an automounted NFSv4 share root. Like this:

cd /net/behemoth.unternet.org/<TAB to get the shared directories> = Oops

BUG: scheduling while atomic mount.nfs4/10294/0xfffffdff
BUG: scheduling while atomic mount.nfs4/10294/0xfffffdff
BUG: scheduling while atomic mount.nfs4/10294/0xfffffdff
BUG: scheduling while atomic mount.nfs4/10294/0xfffffdff
... (loads of them rolling by...)
BUG: scheduling while atomic mount.nfs4/10294/0xfffffdff
kernel panic, not syncing. Aiiie, killing interrupt handler...

DEAD...

I don't have a full Oops (no serial cable handy) so I don't have more
info yet. I can try to get more info but it might be that this problem
is already known so...

Is it a known problem?

Machine is a Thinkpad T23 with Ubuntu Gutsy Gibbon. Earlier git kernels
work OK, the problem started somewhere after 2.6.23 was released. Both
2.6.24-rc3 as well as the current (20071210) version of 2.6.24-rc4 have
the bug.

Cheers//Frank
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