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Cisco Bug: CSCvu24105 - Cisco 1815i AP reloads unexpectedly when boot ME controller

Last Modified

Jun 10, 2020

Products (1)

  • Cisco 4000 Series Integrated Services Routers

Known Affected Releases

8.9

Description (partial)

Symptom:
- 1815I AP will reboot while loading mobility express controller, without generating any crash file or coredump.
- syslogs/console outputs on the AP would show the crash occurring indicating the following:
[05/04/2020 12:02:58.3699] Unable to handle kernel paging request at virtual address f7c5873c
[05/04/2020 12:02:58.3699] pgd = 9deb8000
[05/04/2020 12:02:58.3699] [f7c5873c] *pgd=00000000
[05/04/2020 12:02:58.3699] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[05/04/2020 12:02:58.3699] Modules linked in: ath_pktlog(P) ath_dev(P) ath_rate_atheros(P) ath_hal(P) umac ath_spectral(P) ath_dfs(P) adf(P) asf(P) mem_manager(P) reed_solomon psnap p8022 bridge archivefs act2_driver stp llc ipv6 elts_meraki(P) stile_lm_dp_mallorca(P) stile_lm_ft_mallorca(P) phram merakiclick proclikefs nolan_driver crypto_netdev essedma qca_ssdk led_module aptrace mbedtls
[05/04/2020 12:02:58.3699] CPU: 1 PID: 3685 Comm: capwap_brain Not tainted 3.14.43 #1
[05/04/2020 12:02:58.3699] task: bf1ecc80 ti: 9f3fc000 task.ti: 9f3fc000
[05/04/2020 12:02:58.3699] PC is at check_preempt_wakeup+0x30/0x190
[05/04/2020 12:02:58.3699] LR is at check_preempt_curr+0x30/0x8c

Conditions:
seen on 1815 AP running as ME controller.
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