Comment 5 for bug 1671063

https://bugs.lttng.org/issues/1091

end of sudo lttng-sessiond -vvv shows that we have a vmalloc failure:

DEBUG1 - 14:25:37.954060 [10037/10081]: Woken up but nothing in the UST command queue (in thread_dispatch_ust_registration() at main.c:1891)
DEBUG1 - 14:25:37.954072 [10037/10082]: Got the wait shm fd 33 (in get_wait_shm() at shm.c:115)
DEBUG1 - 14:25:37.954074 [10037/10086]: Updating kernel poll set (in update_kernel_poll() at main.c:889)
DEBUG1 - 14:25:37.954100 [10037/10086]: Thread kernel polling (in thread_manage_kernel() at main.c:1099)
DEBUG1 - 14:25:37.953832 [10037/10087]: [load-session-thread] Load session (in thread_load_session() at load-session-thread.c:91)
DEBUG1 - 14:25:37.954079 [10037/10082]: Futex wait update active 1 (in futex_wait_update() at futex.c:66)
DEBUG1 - 14:25:37.954132 [10037/10082]: Accepting application registration (in thread_registration_apps() at main.c:2145)
DEBUG3 - 14:25:37.953889 [10037/10084]: [ust-thread] Manage notify polling (in ust_thread_manage_notify() at ust-thread.c:69)
DEBUG1 - 14:25:42.577842 [10037/10080]: Wait for client response (in thread_manage_clients() at main.c:4444)
DEBUG1 - 14:25:42.577865 [10037/10080]: Receiving data from client ... (in thread_manage_clients() at main.c:4489)
DEBUG1 - 14:25:42.577999 [10037/10080]: Processing client command 4 (in process_client_msg() at main.c:2980)
DEBUG1 - 14:25:42.578010 [10037/10080]: Syscall table listing. (in syscall_table_list() at syscall.c:280)
PERROR - 14:25:42.578021 [10037/10080]: syscall table list zmalloc: Cannot allocate memory (in syscall_table_list() at syscall.c:291)
DEBUG3 - 14:25:42.578027 [10037/10080]: Destroying syscall hash table. (in destroy_syscall_ht() at syscall.c:159)
DEBUG1 - 14:25:42.578030 [10037/10080]: Missing llm structure. Allocating one. (in process_client_msg() at main.c:4124)
DEBUG1 - 14:25:42.578032 [10037/10080]: Sending response (size: 20, retcode: Not enough memory (26)) (in thread_manage_clients()