[openib-general] [osm] segfault in libibumad

[Bernhard Fischer]

Hi,

I have no ib drivers loaded, starting opensm fails with a segfault.

I'm not sure if userspace is supposed to work without sysfs. What do
you think?



In osm_vendor_init(), i'd set int r = -1, n_cas = -1; and would say
else\nif ((n_cas = umad_get_cas_names.
Also, in umad_get_cas_names() i guess only freeing namelist if
scandir did not return <0 may be better..

(gdb) run
Starting program: /opt/infiniband/ib/bin/opensm
-------------------------------------------------
OpenSM Rev:openib-1.0.0
Command Line Arguments:
 Log File: /var/log/osm.log
-------------------------------------------------
warn: [5900] umad_init: can't read ABI version from
/sys/class/infiniband_mad/abi_version (No such file or directory): is
ib_umad module loaded?

Program received signal SIGSEGV, Segmentation fault.
0x400b8735 in free () from /lib/tls/libc.so.6
(gdb) bt
#0  0x400b8735 in free () from /lib/tls/libc.so.6
#1  0x4002235a in umad_get_cas_names (cas=0x80acc1c, max=32) at
umad.c:513
#2  0x4001afe1 in osm_vendor_init (p_vend=0x80acb88, p_log=0x80a979c,
    timeout=100) at osm_vendor_ibumad.c:418
#3  0x4001b0ba in osm_vendor_new (p_log=0x80a979c, timeout=100)
    at osm_vendor_ibumad.c:452
#4  0x0805d2e4 in osm_opensm_init (p_osm=0x80a8520, p_opt=0xbfb5dc40)
    at osm_opensm.c:234
#5  0x0804ca19 in main (argc=1, argv=0xbfb5de14) at main.c:632

-- 
Bernhard