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authorJ. Bruce Fields <bfields@redhat.com>2013-07-08 13:44:45 -0400
committerJ. Bruce Fields <bfields@redhat.com>2013-07-08 17:27:23 -0400
commit0979292bfa301cb87d936b69af428090d2feea1b (patch)
treeb18525dae7ff397f0ead97f49985a3ece9993df9 /net
parent0bebc633f1428163c9659fd16b34c745e60a0757 (diff)
svcrpc: fix failures to handle -1 uid's
As of f025adf191924e3a75ce80e130afcd2485b53bb8 "sunrpc: Properly decode kuids and kgids in RPC_AUTH_UNIX credentials" any rpc containing a -1 (0xffff) uid or gid would fail with a badcred error. Commit afe3c3fd5392b2f0066930abc5dbd3f4b14a0f13 "svcrpc: fix failures to handle -1 uid's and gid's" fixed part of the problem, but overlooked the gid upcall--the kernel can request supplementary gid's for the -1 uid, but mountd's attempt write a response will get -EINVAL. Symptoms were nfsd failing to reply to the first attempt to use a newly negotiated krb5 context. Reported-by: Sven Geggus <lists@fuchsschwanzdomain.de> Tested-by: Sven Geggus <lists@fuchsschwanzdomain.de> Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/svcauth_unix.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index a98853dfccdc..621ca7b4a155 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -493,8 +493,6 @@ static int unix_gid_parse(struct cache_detail *cd,
if (rv)
return -EINVAL;
uid = make_kuid(&init_user_ns, id);
- if (!uid_valid(uid))
- return -EINVAL;
ug.uid = uid;
expiry = get_expiry(&mesg);

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