@wyang007 Hello, I found that the glibc and glibc debuginfo version was different. Here is gdb message after installing.
```bash
(gdb) where
#0 XrdFfsWcache_destroy (fd=<value optimized out>) at /usr/src/debug/xrootd/xrootd/src/XrdFfs/XrdFfsWcache.cc:138
#1 0x0000003de3c094ca in XrdFfsWcache_create (fd=0) at /usr/src/debug/xrootd/xrootd/src/XrdFfs/XrdFfsWcache.cc:114
#2 0x0000000000403ed1 in xrootdfs_create (
path=0x7fb4a0000b20 "/store/user/jhchoi/Latino/HWWNano/Fall2017_102X_nAODv5_Full2017v6/MCl1loose2017v6__MCCorr2017v6/nanoLatino_TTToSemiLeptonic_PSweights__part34.root", mode=<value optimized out>, fi=0x7fb5c99bede0) at /usr/src/debug/xrootd/xrootd/src/XrdFfs/XrdFfsXrootdfs.cc:444
#3 0x0000003743c08c2f in fuse_fs_create (fs=0x1227a10,
path=0x7fb4a0000b20 "/store/user/jhchoi/Latino/HWWNano/Fall2017_102X_nAODv5_Full2017v6/MCl1loose2017v6__MCCorr2017v6/nanoLatino_TTToSemiLeptonic_PSweights__part34.root", mode=33188, fi=0x7fb5c99bede0) at fuse.c:1428
#4 0x0000003743c1090a in fuse_lib_create (req=0x7fb4a0006ee0, parent=46516, name=0x7fb53804b0c8 "nanoLatino_TTToSemiLeptonic_PSweights__part34.root",
mode=33188, fi=0x7fb5c99bede0) at fuse.c:2407
#5 0x0000003743c146f3 in do_create (req=<value optimized out>, nodeid=<value optimized out>, inarg=<value optimized out>) at fuse_lowlevel.c:705
#6 0x0000003743c120ef in fuse_do_work (data=0x7fb538071c40) at fuse_loop_mt.c:107
#7 0x0000003742007aa1 in start_thread (arg=0x7fb5c99bf700) at pthread_create.c:301
#8 0x0000003741ce8c4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
```
I think that the **xrootdfs_create** function on **XrdFfsXrootdfs** has a bug due to a lack of the return value checking.
On https://github.com/xrootd/xrootd/blob/master/src/XrdFfs/XrdFfsXrootdfs.cc#L442,
the **res** did not be checked after calling of **xrootdfs_do_create**. If xrootdfs_do_create is failed, fd can be 0.
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