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nfsd4: Fix MACH_CRED NULL dereference

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Fixes a NULL-dereference on attempts to use MACH_CRED protection over
auth_sys.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields
2013-08-07 11:41:49 -04:00
parent 7193bd17ea
commit c47205914c
1 changed files with 2 additions and 0 deletions
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2
fs/nfsd/nfs4state.c
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@@ -1264,6 +1264,8 @@ static bool svc_rqst_integrity_protected(struct svc_rqst *rqstp)
struct svc_cred *cr = &rqstp->rq_cred; struct svc_cred *cr = &rqstp->rq_cred;
u32 service; u32 service;
if (!cr->cr_gss_mech)
return false;
service = gss_pseudoflavor_to_service(cr->cr_gss_mech, cr->cr_flavor); service = gss_pseudoflavor_to_service(cr->cr_gss_mech, cr->cr_flavor);
return service == RPC_GSS_SVC_INTEGRITY || return service == RPC_GSS_SVC_INTEGRITY ||
service == RPC_GSS_SVC_PRIVACY; service == RPC_GSS_SVC_PRIVACY;