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authorJ. Bruce Fields <bfields@citi.umich.edu>2007-07-24 01:43:52 (GMT)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-24 19:24:58 (GMT)
commitcb276805803b8e0616159d80a441ab26a931ada4 (patch)
tree9c2e3db058e07ac7e7f9cb6a76a33a8937f17ad7 /net/sunrpc
parentd1709e477f203c0538f94c4d1ac981d08325eebf (diff)
downloadlinux-fsl-qoriq-cb276805803b8e0616159d80a441ab26a931ada4.tar.xz
nfsd: fix possible oops on re-insertion of rpcsec_gss modules
The handling of the re-registration case is wrong here; the "test" that was returned from auth_domain_lookup will not be used again, so that reference should be put. And auth_domain_lookup never did anything with "new" in this case, so we should just clean it up ourself. Thanks to Akinobu Mita for bug report, analysis, and testing. Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Cc: Neil Brown <neilb@suse.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/auth_gss/svcauth_gss.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index 4906975..dc2f41e 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -769,11 +769,12 @@ svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name)
new->h.flavour = &svcauthops_gss;
new->pseudoflavor = pseudoflavor;
+ stat = 0;
test = auth_domain_lookup(name, &new->h);
- if (test != &new->h) { /* XXX Duplicate registration? */
- auth_domain_put(&new->h);
- /* dangling ref-count... */
- goto out;
+ if (test != &new->h) { /* Duplicate registration */
+ auth_domain_put(test);
+ kfree(new->h.name);
+ goto out_free_dom;
}
return 0;