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Subject: Re: [hwloc-users] Segmentation fault in collect_proc_cpuset, topology.c line 1074
From: Brice Goglin (brice.goglin_at_[hidden])
Date: 2013-01-15 13:26:30


Hello
Indeed, there's a big cgroup crash in 1.6. Can you verify that 1.6.1rc2 works fine?
Thanks
Brice

cessenat_at_[hidden] a écrit :

>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.
>
>
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