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SubjectRe: 2.6.19: OOPS in cat /proc/fs/nfs/exports
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> There is a place where a failed kstrdup could lead to this, but that
> is rather unlikely and wouldn't be as reproducible as this seems to
> be.
> If you boot up and then immediately shutdown does this error trigger,
> it does it have to be up for a while?

It happens right after booting.

I've since disabled the NFS server on that box, and just tried to
manually start it, and it gives me this:
# /usr/sbin/exportfs -r
bigred:/video/rec: Cannot allocate memory

That is the first and only export:

# cat /etc/exports
# /etc/exports: the access control list for filesystems which may be
exported
# to NFS clients. See exports(5).

/video/rec bigred(rw,sync)

strace on exportfs shows this:nfsservctl(0x3, 0xbf875824, 0) =
- -1 ENOMEM

After that, /proc/fs/nfs/export exists and gives the Oops, while
/proc/fs/nfsd/export doesn't exist.

I don't think however this box is particularly short on memory:

MemTotal: 248704 kB
MemFree: 102780 kB
Buffers: 20520 kB
Cached: 50692 kB
SwapCached: 0 kB
Active: 81712 kB
Inactive: 25160 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 1516 kB
Writeback: 0 kB
AnonPages: 35672 kB
Mapped: 13104 kB
Slab: 6960 kB
SReclaimable: 3104 kB
SUnreclaim: 3856 kB
PageTables: 692 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 124352 kB
Committed_AS: 124528 kB
VmallocTotal: 786136 kB
VmallocUsed: 7568 kB
VmallocChunk: 778508 kB

(this is right after booting, DVB drivers loaded and VDR running.)

Will try your patch tomorrow.

Olaf

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