Hi, I’m trying to call your logging as follows: sprintf(errstr, "Invalid map: %s: %s", clue, line); LogWarn(COMPONENT_NFS_V4, errstr); I’m getting a segfault in LogWarn. Program received signal SIGSEGV, Segmentation fault. 0x00002aaaaad43ca4 in display_log_component_level (component=COMPONENT_NFS_V4, file=0x2aaaaae4d5d8 "/mnt/nbnfs2/jcbecker/reexporter/nfs-ganesha/src/uidmap/uidmap.c", line=519, function=0x2aaaaae4d7d8 <__func__.18797> "um_load", level=NIV_WARN, format=0x7fffffffc470 "Invalid map: unknown_user: dataset: 129.99.10.111 \t21102:61856 dataset n1856", arguments=0x7fffffff2718) at /mnt/nbnfs2/jcbecker/reexporter/nfs-ganesha/src/log/log_functions.c:1519 1519 if (level <= facility->lf_max_level The traceback is below. I’m investigating, but any advice is welcome. Thanks. -Jeff (gdb) where #0 0x00002aaaaad43ca4 in display_log_component_level ( component=COMPONENT_NFS_V4, file=0x2aaaaae4d5d8 "/mnt/nbnfs2/jcbecker/reexporter/nfs-ganesha/src/uidmap/uidmap.c", line=519, function=0x2aaaaae4d7d8 <__func__.18797> "um_load", level=NIV_WARN, format=0x7fffffffc470 "Invalid map: unknown_user: dataset: 129.99.10.111 \t21102:61856 dataset n1856", arguments=0x7fffffff2718) at /mnt/nbnfs2/jcbecker/reexporter/nfs-ganesha/src/log/log_functions.c:1519 #1 0x00002aaaaad43df6 in DisplayLogComponentLevel ( component=COMPONENT_NFS_V4, file=0x2aaaaae4d5d8 "/mnt/nbnfs2/jcbecker/reexporter/nfs-ganesha/src/uidmap/uidmap.c", line=519, function=0x2aaaaae4d7d8 <__func__.18797> "um_load", level=NIV_WARN, format=0x7fffffffc470 "Invalid map: unknown_user: dataset: 129.99.10.111 \t21102:61856 dataset n1856") at /mnt/nbnfs2/jcbecker/reexporter/nfs-ganesha/src/log/log_functions.c:1704