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| author | Jeff Layton <jlayton@redhat.com> | 2014-01-04 13:18:04 +0100 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-01-06 21:14:17 +0100 |
| commit | a92e5eb1103341e985a575e48e26f87fbb9b1679 (patch) | |
| tree | 1664ccd9c43785c5daa99e76a641cacb53c546c8 /net/sunrpc/auth_gss | |
| parent | sunrpc: don't wait for write before allowing reads from use-gss-proxy file (diff) | |
| download | linux-a92e5eb1103341e985a575e48e26f87fbb9b1679.tar.xz linux-a92e5eb1103341e985a575e48e26f87fbb9b1679.zip | |
sunrpc: fix potential race between setting use_gss_proxy and the upcall rpc_clnt
An nfsd thread can call use_gss_proxy and find it set to '1' but find
gssp_clnt still NULL, so that when it attempts the upcall the result
will be an unnecessary -EIO.
So, ensure that gssp_clnt is created first, and set the use_gss_proxy
variable only if that succeeds.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc/auth_gss')
| -rw-r--r-- | net/sunrpc/auth_gss/svcauth_gss.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index 1b94a9c8a242..60dc3700b2cb 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -1317,10 +1317,10 @@ static ssize_t write_gssp(struct file *file, const char __user *buf, return res; if (i != 1) return -EINVAL; - res = set_gss_proxy(net, 1); + res = set_gssp_clnt(net); if (res) return res; - res = set_gssp_clnt(net); + res = set_gss_proxy(net, 1); if (res) return res; return count; |