NFS panic: ^C on cp

Attilio Rao attilio at
Wed Dec 30 15:01:11 UTC 2009

2009/12/30 Lucius Windschuh <lwindschuh at>:
> Hi,
> I'm using CURRENT r201138 and attending the 26C3, where we have access
> to a NetApp filer (nfs://, may work also for
> external IPs).
> It works well. But the following command sequence results with high
> probability, not always, in a panic:
> # mount_nfs -o nfsv3,rsize=32768,wsize=32768,intr /mnt
> # cd /mnt/
> # cp some_large_file /some/where/local/
> (wait a while)
> ^C
> (panic: Assertion lk->lk_exslpfail == 0 failed at
> /usr/src/sys/kern/kern_lock.c:962)

May you give me access to a coredump of yours or follow instructions
I'm going to tell you?


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