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Cisco Bug: CSCuq65942 - Customer 5320 crash in debug_vstream_disconnect

Last Modified

Sep 17, 2019

Products (15)

  • Cisco TelePresence MCU 4500 Series
  • Cisco TelePresence MCU 4520
  • Cisco TelePresence MCU 4505
  • Cisco TelePresence MCU 5320
  • Cisco TelePresence MCU 4510
  • Cisco TelePresence MCU 4215
  • Cisco TelePresence MCU 4205
  • Cisco TelePresence MCU 4220
  • Cisco TelePresence MCU MSE 8420
  • Cisco TelePresence MCU 4203
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Known Affected Releases


Description (partial)

A TelePresence MCU unexpectedly rebooted. The backtrace shows a failure in the debug_vstream_disconnect function.

This reboot is triggered in a very specific scenario when a conference is destroyed whilst and endpoint is presenting H.263+ content.

Order or events:
First endpoint connects supporting only H.263+ content
One endpoint joins that is not capable of either H.263+ or H.264 content
At least 2 more endpoints join, supporting both H.264 and H.263+ content.
One of the last two endpoints starts presenting, and is still presenting when the conference is destroyed.
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Bug Details Include

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