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| author | J. Bruce Fields <bfields@redhat.com> | 2013-06-21 11:48:11 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-13 11:42:27 -0700 |
| commit | c334daca734bbb11f79742ec699b1cf9d2112117 (patch) | |
| tree | 5afa46c98b2679da823b5206b561dfba0b8df296 /fs | |
| parent | 9c42c27677b133bd8c8f7a7d69dd4d00e96ef035 (diff) | |
| download | linux-3.10-c334daca734bbb11f79742ec699b1cf9d2112117.tar.gz linux-3.10-c334daca734bbb11f79742ec699b1cf9d2112117.tar.bz2 linux-3.10-c334daca734bbb11f79742ec699b1cf9d2112117.zip | |
nfsd4: fix decoding of compounds across page boundaries
commit 247500820ebd02ad87525db5d9b199e5b66f6636 upstream.
A freebsd NFSv4.0 client was getting rare IO errors expanding a tarball.
A network trace showed the server returning BAD_XDR on the final getattr
of a getattr+write+getattr compound. The final getattr started on a
page boundary.
I believe the Linux client ignores errors on the post-write getattr, and
that that's why we haven't seen this before.
Reported-by: Rick Macklem <rmacklem@uoguelph.ca>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 6cd86e0fe45..582321a978b 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -162,8 +162,8 @@ static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) */ memcpy(p, argp->p, avail); /* step to next page */ - argp->p = page_address(argp->pagelist[0]); argp->pagelist++; + argp->p = page_address(argp->pagelist[0]); if (argp->pagelen < PAGE_SIZE) { argp->end = argp->p + (argp->pagelen>>2); argp->pagelen = 0; |