NFSD: fix a leak which can cause CREATE_SESSION failures
check_forechannel_attrs gets drc memory, so nfsd must put it when
check_backchannel_attrs fails.
After many requests with bad back channel attrs, nfsd will deny any
client's CREATE_SESSION forever.
A new test case named CSESS29 for pynfs will send in another mail.
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 1aed9be..9a6d088 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1915,7 +1915,7 @@
return status;
status = check_backchannel_attrs(&cr_ses->back_channel);
if (status)
- return status;
+ goto out_release_drc_mem;
status = nfserr_jukebox;
new = alloc_session(&cr_ses->fore_channel);
if (!new)