nfsd4: Fix MACH_CRED NULL dereference
Fixes a NULL-dereference on attempts to use MACH_CRED protection over auth_sys. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -1264,6 +1264,8 @@ static bool svc_rqst_integrity_protected(struct svc_rqst *rqstp)
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struct svc_cred *cr = &rqstp->rq_cred;
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u32 service;
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if (!cr->cr_gss_mech)
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return false;
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service = gss_pseudoflavor_to_service(cr->cr_gss_mech, cr->cr_flavor);
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return service == RPC_GSS_SVC_INTEGRITY ||
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service == RPC_GSS_SVC_PRIVACY;
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