Comment 2 for bug 1684775

Seen on 5.5 too:

11/14 Test #11: lf ...............................***Failed 0.06 sec
# N CPUs: 4, atomic ops: gcc-builtins-smp
1..7
ok 1 - my_atomic_initialize() returned 0
# Testing lf_pinbox (with my_thread_init) with 30 threads, 3000 iterations...
ok 2 - tested lf_pinbox (with my_thread_init) in 0.0067674 secs (0)
# Testing lf_alloc (with my_thread_init) with 30 threads, 3000 iterations...
# 0 mallocs, 3 pins in stack
ok 3 - tested lf_alloc (with my_thread_init) in 0.0193768 secs (0)
# Testing lf_hash (with my_thread_init) with 30 threads, 300 iterations...
Bail out! Signal 11 thrown