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git2svn
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V 27
2022-05-20T00:44:05.712179Z
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V 591
nfsd: Add a sanity check for Owner/OwnerGroup string length

Robert Morris reported that, if a client sends an absurdly
large Owner/OwnerGroup string, the kernel malloc() for the
large size string can block forever.

This patch adds a sanity limit for Owner/OwnerGroup string
length.  Since the RFCs do not specify any limit and FreeBSD
can handle a group name greater than 1Kbyte, the limit is
set at a generous 10Kbytes.

PR:	260546

(cherry picked from commit ef4edb70c909fc2b1de867601c2230597d07daa0)

Git Hash:   c0ea059da22f0f1f20ee43db536a74032f140429
Git Author: rmacklem@FreeBSD.org
END