[lttng-dev] Valgrind Memory Error in lttng-relayd

Aravind HT aravind.ht at gmail.com
Mon Jun 29 14:21:25 EDT 2015


I ran valgrind on lttng-relayd for a soft hang issue that I had reported

Below are the list of errors that I found.

==793== Thread 4:
==793== Invalid write of size 8
==793==    at 0x406038: cds_list_add (list.h:53)
==793==    by 0x409442: queue_stream (main.c:1175)
==793==    by 0x409AB7: relay_add_stream (main.c:1274)
==793==    by 0x40C47A: relay_process_control (main.c:2099)
==793==    by 0x40DBB1: relay_thread_worker (main.c:2574)
==793==    by 0x5BDAFE2: start_thread (pthread_create.c:312)
==793==    by 0x5ED8AFC: clone (clone.S:111)
==793==  Address 0x6e09040 is 64 bytes inside a block of size 312 free'd
==793==    at 0x4C2898C: free (in
==793==    by 0x418EF8: rcu_destroy_stream (stream.c:33)
==793==    by 0x5079C94: ??? (in /usr/lib64/liburcu.so.2.0.0)
==793==    by 0x5BDAFE2: start_thread (pthread_create.c:312)
==793==    by 0x5ED8AFC: clone (clone.S:111)

Are there any known bugs/fixes for these ?

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