Klik&Klaar simkaart niet meer gedetecteerd na aantal dagen
Na een aantal dagen uptime is er geen internet meer beschikbaar. WiFi/LAN werkt nog wel. In de admin console staat bij de simkaart status: “Geen” terwijl er nog steeds wel gewoon een simkaart inzit. Als ik dan het apparaat opnieuw start via de console (ik raak m dus niet aan). Dan werkt alles weer normaal en wordt de simkaart ook weer herkend. Ik heb de log files door AI gehaald en die komt met het volgende (zie verder). Mijn vragen: Wat kan ik zelf doen om het probleem te verhelpen? Wat is de meest waarschijnlijke oorzaak? Wat kan Odido doen om het probleem te verhelpen? Met de helpdesk kwam ik trouwens geen steek verder. Analysis System Hang: The [Hang_Detect] message at 04:49:27 is a critical indicator of system unresponsiveness. Possible causes include deadlocks, resource contention, hardware failures, or software bugs (e.g., memory corruption or infinite loops). UART DMA Issues: The skip free for NULL PTR issue and flush TX[306]: -110 messages at 04:49:50 point to a specific problem in the UART DMA driver, which handles serial communication (likely with the modem or other peripherals). The NULL pointer errors suggest a programming bug or race condition, while the timeout indicates a failure to complete a data transfer operation. Causal Relationship: Since the UART DMA errors occur 23 seconds after the hang detection, they could be a symptom of the system hang rather than the initial cause. However, if the UART DMA driver had issues prior to 04:49:27 (not visible in the provided logs), it could have caused the system to wait indefinitely for a response, leading to the hang. Likely Cause The most concrete evidence of an issue in the logs is the UART DMA driver errors at 04:49:50. These errors indicate a malfunction in serial communication, which could disrupt interactions with critical peripherals like the modem. While the hang detection at 04:49:27 suggests a broader system issue, the absence of earlier UART DMA errors in the provided logs limits definitive proof that it caused the hang. However, the UART DMA driver's problems are the most prominent anomaly: Nature of the Issue: The skip free for NULL PTR issue suggests a software bug where the driver attempts to free unallocated or already-freed memory, potentially leading to instability. The flush TX[306]: -110 timeout further implies a hardware or communication failure. Impact: If the UART DMA driver failed to handle serial data correctly, it could have stalled system processes waiting for peripheral responses, contributing to or resulting from the hang. Conclusion Based on the log analysis, the likely cause of the issue is a problem with the UART DMA driver, as evidenced by the NULL pointer errors and flush timeout. While the exact relationship between this driver issue and the earlier system hang is unclear from the provided data, the UART DMA driver's malfunction is the most actionable finding. The cause of the issue is a UART DMA driver issue.