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AP's crash sporadically when admission control (tspec) is enabled

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TitleAP's crash sporadically when admission control (tspec) is enabled
Symptoms
AP's crash sporadically following messages seen in the log
 
Oct  4 06:12:01 kernel: Add TSPEC pDev=85020340 pOpBss=8073c000 pTspecNew=8485e0f4 MAC 80 76
Oct  4 06:12:01 kernel: 80 76: VOICE isRoam=0, acThreshold=60, mt_others=0, newMtTotal=0, oldMt 0  newMt 0 sba 2001 inactive 0

Call Trace:
[<84422e3c>] chantry_ext_calculateRxDataMediumUnit+0x74/0x184 [chantry_ext]
[<84425aa0>] isRxDataConformPolicer+0xc8/0x138 [chantry_ext]
[<8441f61c>] chantry_ext_rx_policer+0x17c/0x220 [chantry_ext]
[<8441b920>] osif_chantry_rx_cmn_process+0x1f0/0x260 [chantry_ext]
[<8441c6f0>] osif_chantry_rx_postprocess+0xc0c/0xd94 [chantry_ext]
[<85e7a5d4>] ieee80211_input_sta+0x4a8/0xd6c [umac]



 
Environment
  • identiFi wireless
  • Firmware 9.21.05 through 9.21.12
  • Admission control enabled (tspec)
  • AP3705
  • AP3825
Cause
Firmware bug
Resolution
Workaround:
  • In wlan services QoS tab, deselect all admission control checkboxes
Resolution
  • Upgrade to 9.21.14
Additional notes

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