avoid crash by fixing "first" and "last" pointers of of the ts_entry_t after ts_urecord_t deletion

Pre-Submission Checklist

Commit message has the format required by CONTRIBUTING guide
Commits are split per component (core, individual modules, libs, utils, ...)
Each component has a single commit (if not, squash them into one commit)
No commits to README files for modules (changes must be done to docbook files
in doc/ subfolder, the README file is autogenerated)

Type Of Change

Small bug fix (non-breaking change which fixes an issue)
New feature (non-breaking change which adds new functionality)
Breaking change (fix or feature that would change existing functionality)

Checklist:

PR should be backported to stable branches
Tested changes locally
Related to issue #XXXX (replace XXXX with an open issue number)

Description

tsilo module didn't reset "first" and "last" pointers of a doubly linked list of ts_urecord_t objects. It worked correctly only when there were no hash collisions and each ts_entry slot had only one ts_urecord_t object. To faster reproduce the problem one can set modparam("tsilo", "hash_size", 2) and run a light load test (5...10 simultaneous call setups).

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/1302

Commit Summary

tsilo: fix internal data structures

File Changes

M src/modules/tsilo/ts_hash.c (8)

Patch Links:

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