- **status**: review --> fixed
- **Comment**:
commit d3b3bd1fb4bb3afe5d8252641bc68029f91b69b3 (HEAD -> develop,
origin/develop, ticket-3137)
Author: Vu Minh Nguyen <[email protected]>
Date: Mon Jan 6 10:12:56 2020 +0700
log: fix segmentation fault in log agent [#3137]
log agent did not protect the resource `unacked_invocations_ list` from
accessing by multiple threads, so caused segmentation fault.
This patch introduces a mutex in order to synchronize the access to that
common resource.
---
** [tickets:#3137] log: accessing unacked invocation list is not thread-safe**
**Status:** fixed
**Milestone:** 5.20.01
**Created:** Fri Jan 03, 2020 09:49 AM UTC by Vu Minh Nguyen
**Last Updated:** Mon Jan 06, 2020 03:16 AM UTC
**Owner:** Vu Minh Nguyen
Coredump is generated; here is part of the backtrace.
~~~
Program terminated with signal SIGSEGV, Segmentation fault.
#0 std::list<unsigned long long, std::allocator<unsigned long long> >::remove
(__value=@0x7fff770051f8: 1024193, this=0x15f2930) at
/usr/include/c++/4.8/bits/list.tcc:248
[Current thread is 1 (Thread 0x7f94914d4780 (LWP 7167))]
### BT ###
#0 std::list<unsigned long long, std::allocator<unsigned long long> >::remove
(__value=@0x7fff770051f8: 1024193, this=0x15f2930) at
/usr/include/c++/4.8/bits/list.tcc:248
#1 LogClient::RemoveTrack (inv=1024193, this=0x15f2890) at
./src/log/agent/lga_client.h:181
#2 LogClient::InvokeCallback (this=this@entry=0x15f2890,
msg=msg@entry=0x7f9480001cf0) at src/log/agent/lga_client.cc:135
~~~
---
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