[OpenSIPS-Devel] [OpenSIPS/opensips] 5386bb: clusterer: fix possible crash when sending a bin p...

[Vlad Pătrașcu]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 5386bb7a48cc62b7930788471b82756a6e2aea3d
      https://github.com/OpenSIPS/opensips/commit/5386bb7a48cc62b7930788471b82756a6e2aea3d
  Author: Vlad Patrascu <vladp at opensips.org>
  Date:   2019-08-21 (Wed, 21 Aug 2019)

  Changed paths:
    M modules/clusterer/clusterer.c
    M modules/clusterer/clusterer_mod.c
    M modules/clusterer/node_info.c
    M modules/clusterer/sync.c

  Log Message:
  -----------
  clusterer: fix possible crash when sending a bin packet

This commit fixes a crash caused by a race condition when computing
the next hop for a destination before sending a bin packet.
The actual 'next_hop' field from the 'node_info_t' struct may be changed by
another process after getting the return code from the 'get_next_hop_2()'
function.