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DanielJB
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Joined: Mon May 27, 2013 3:05 pm

CAPsMAN interface scan memory leak and reboot

Sat Jul 23, 2022 10:29 am

With RouterOS 7.1 through 7.4, I see a memory leak ultimately causing reboot when performing a CAPsMAN interface scan with 'as-value' on a some radios, eg:
:put [/caps-man/interface/scan 5g-ap6-1 as-value]
I'm using cAP ac units with a RB5009 and see one processor core get to 100% after ~30s and memory exhaustion triggering reboot in ~60s. It occurs consistently on only 2 out of 100 radios despite stock config and netinstall, suggesting it relates to 802.11 beacon Information Element parsing and CAPsMAN encoding. The same issue doesn't occur when performing a non-CAPsMAN/local scan.

I logged this as SUP-71018 in January 2022; does anyone else experience the same?

Thanks,
Daniel

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