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authorJeff Layton <jlayton@poochiereds.net>2015-03-31 19:03:28 +0300
committerJ. Bruce Fields <bfields@redhat.com>2015-03-31 21:15:08 +0300
commitf9c72d10d6fbf949558cd088389a42213ed7b12d (patch)
treec40dbd4ff8c6d1f94f3406597eeca74208ba4668 /net/sunrpc/clnt.c
parentf3f03330dee0526d82f2a0fd1a79d207ed1ac439 (diff)
downloadlinux-f9c72d10d6fbf949558cd088389a42213ed7b12d.tar.xz
sunrpc: make debugfs file creation failure non-fatal
We currently have a problem that SELinux policy is being enforced when creating debugfs files. If a debugfs file is created as a side effect of doing some syscall, then that creation can fail if the SELinux policy for that process prevents it. This seems wrong. We don't do that for files under /proc, for instance, so Bruce has proposed a patch to fix that. While discussing that patch however, Greg K.H. stated: "No kernel code should care / fail if a debugfs function fails, so please fix up the sunrpc code first." This patch converts all of the sunrpc debugfs setup code to be void return functins, and the callers to not look for errors from those functions. This should allow rpc_clnt and rpc_xprt creation to work, even if the kernel fails to create debugfs files for some reason. Symptoms were failing krb5 mounts on systems using gss-proxy and selinux. Fixes: 388f0c776781 "sunrpc: add a debugfs rpc_xprt directory..." Cc: stable@vger.kernel.org Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc/clnt.c')
-rw-r--r--net/sunrpc/clnt.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 612aa73bbc60..e6ce1517367f 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -303,9 +303,7 @@ static int rpc_client_register(struct rpc_clnt *clnt,
struct super_block *pipefs_sb;
int err;
- err = rpc_clnt_debugfs_register(clnt);
- if (err)
- return err;
+ rpc_clnt_debugfs_register(clnt);
pipefs_sb = rpc_get_sb_net(net);
if (pipefs_sb) {