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Cisco Bug: CSCuq48205 - LDP crashed at ldp_rib_deinit after issuing "commit replace"

Last Modified

Jul 31, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

5.3.0.MPLS

Description (partial)

Symptom:
mpls_ldp may crash when unconfiguring MPLS LDP feature.

Conditions:
When MPLS LDP feature is unconfigured and the mpls_ldp process is cleaning up its resources, one of the task is to unregister from RIB for receiving prefix notifications. However, mpls_ldp does not check whether or not it has registered with RIB on this notification prior to calling the unregister. When unregister is called when mpls_ldp has not registered to RIB, crash occurs due to deferencing a NULL pointer.
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