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From: Brice Goglin <Brice.Goglin@ens-lyon.org>
To: trond.myklebust@fys.uio.no
Cc: linux-kernel@vger.kernel.org
Subject: Crash when unmounting NFS/TCP with -f
Date: Fri, 22 Apr 2005 14:32:09 +0200	[thread overview]
Message-ID: <4268EEC9.8010305@ens-lyon.org> (raw)

Hi Trond,

I'm using NFS (v2) over TCP (in a SSH tunnel).
Each time the SSH dies before a umount NFS, I have to umount -f
and I get a crash (only sysrq works).
Actually, the crash occurs a few seconds after umount -f.

It seems that killing SSH by hand does _not_ lead to crash.
But a long network failure does.
I remember seeing this bug several times with all stable releases
from 2.6.7 to 2.6.11. I didn't try with earlier versions.

I didn't see anything in the logs (after reboot). But I can't be sure
there was nothing in dmesg since I didn't get a chance to chvt 1 and
see console messages before rebooting (with sysrq).

Do you have any idea how to debug this ?

Thanks,
Brice

             reply	other threads:[~2005-04-22 12:32 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-22 12:32 Brice Goglin [this message]
2005-04-22 13:39 ` Crash when unmounting NFS/TCP with -f Trond Myklebust
2005-04-22 18:43 ` Bill Davidsen
2005-04-26  7:51   ` Brice Goglin
2005-05-05 10:17     ` Brice Goglin
2005-05-05 11:58       ` Trond Myklebust

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