The result check was missed and It cause the coredump like: 0x00005589f3e358dd in add_command (ci=0x5589f3e3f020 <health_cmd>) at command.c:37 0x00005589f3e337d8 in init_commands () at init.c:37 init (argc=<optimized out>, argv=0x7ffecfb0cd28) at init.c:102 0x00005589f3e33399 in main (argc=<optimized out>, argv=<optimized out>) at init.c:112 Add check for realloc function to ignore this coredump and exit with error output Signed-off-by: Weifeng Su <suweifeng1@xxxxxxxxxx> --- libxcmd/command.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libxcmd/command.c b/libxcmd/command.c index a76d1515..47d050c3 100644 --- a/libxcmd/command.c +++ b/libxcmd/command.c @@ -34,6 +34,10 @@ add_command( const cmdinfo_t *ci) { cmdtab = realloc((void *)cmdtab, ++ncmds * sizeof(*cmdtab)); + if (!cmdtab) { + perror("realloc"); + exit(1); + } cmdtab[ncmds - 1] = *ci; qsort(cmdtab, ncmds, sizeof(*cmdtab), compare); } -- 2.18.0.windows.1