[LU-11088] ll_opcode2str() must handle invalid opcodes safely

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.17.0
• Labels: easy lad23dd
• Severity: 3
• Assignee: Patrick Farrell
• Reporter: John Hammond

Description

There are at least two places where ll_opcode2str() is passed an opcode from the wire. If that opcode is unknown the opcode_offset() will return (u32)-1 and one of the assertions in ll_opcode2str() will fail.