Hello, When updating from 1.5.1 to 1.6 I get a segfault when inside a cgroup/cpuset in collect_proc_cpuset, file topology.c line 1074.
It appears that an HWLOC_OBJ_CORE has a son who is it's HWLOC_OBJ_GROUP's father ! $ cat /proc/self/cgroup 2: cpuset: /slurm/test 1: freezer: / $ lssubsys -m cpuset cpuset /cgroup/cpuset $ cat /cgroup/cpuset/slurm/test/cpuset.cpus 31 $ hwloc-1.6/bis/lstopo Segmentation fault (core dumped) $ gdb... Program terminated with signal 11, Segmentation fault. #0 0x00007ffd758d225e in collect_proc_cpuset (obj=<value opt out>, sys=0x1f4dba0) at topology.c: 1074 The machine is made of bullx super-node S6010 (CEA Tera 100). Thanks for your help, Olivier Cessenat.
