Technical Tip: FortiWiFi reboots or becomes unresponsive when connecting to SSID and also encounter kernel panic

[nkorea]

Description	This article describes a known issue where FortiWiFi-40F and FortiWiFi-60F/61F models can experience unexpected reboots/kernel panics or become unresponsive after users connect to the local Wireless SSID.
Scope	FortiWiFi (FWF-4xF/6xF models).
Solution	Trigger Conditions: Users are connected to SSID. Take the console and gather the Kernel logs when the issue is happening by following the below document and match with the below kernel panic snippet: Troubleshooting Tip: How to deal with a kernel panic The below kernel panic snippet to look for which confirms the issue : Unable to handle kernel NULL pointer dereference at virtual address 00000002 pgd = ffffffc000de4000 [00000002] *pgd=0000000077c07003, *pud=0000000077c07003, *pmd=0000000077c08003, *pte=00600000f3149707 Internal error: Oops: 96000006 [#1] SMP Modules linked in: filter4 task: ffffffc000b6a8e0 ti: ffffffc000b64000 task.ti: ffffffc000b64000 PC is at ieee80211_parse_beacon+0x3d8/0x151c LR is at ieee80211_parse_beacon+0x64/0x151c Workaround. Disable SSID interfaces (The same can be done from GUI under WiFi & Switch Controller -> SSID). Roll back to previous versions. Fix Schedule : 7.0.16 ,7.2.9, 7.6.0, 7.4.5. This is a known issue and the BUG IDs are #989929 and #1001672 for reference.