[OpenSIPS-Devel] [OpenSIPS/opensips] 1e3350: HP_MALLOC: Fix a shm_realloc() concurrency issue

Liviu Chircu noreply at github.com
Tue Feb 4 11:19:13 EST 2020


  Branch: refs/heads/3.0
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 1e3350c80098b0a17bf371c17fa39a4c17f81e23
      https://github.com/OpenSIPS/opensips/commit/1e3350c80098b0a17bf371c17fa39a4c17f81e23
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2020-02-04 (Tue, 04 Feb 2020)

  Changed paths:
    M mem/hp_malloc_dyn.h

  Log Message:
  -----------
  HP_MALLOC:  Fix a shm_realloc() concurrency issue

On a fragment shrink operation, we must also grab the lock on the
resulting fragment before inserting it (this cannot be an _unsafe
operation!)

Many thanks to 46Labs and Răzvan Crainea for helping troubleshoot this

(cherry picked from commit ff7ba6e2dd05fbc4989561d7a4582cb11cbb01ba)





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