/tmp/groom.c: In function 'groom_kernproc':
/tmp/groom.c:58:14: warning: implicit declaration of function 'malloc' [-Wimplicit-function-declaration]
  char *buf = malloc(len);
              ^~~~~~
/tmp/groom.c:58:14: warning: incompatible implicit declaration of built-in function 'malloc'
/tmp/groom.c:58:14: note: include '<stdlib.h>' or provide a declaration of 'malloc'
/tmp/groom.c:19:1:
+#include <stdlib.h>
 
/tmp/groom.c:58:14:
  char *buf = malloc(len);
              ^~~~~~
/tmp/groom.c:65:2: warning: implicit declaration of function 'free' [-Wimplicit-function-declaration]
  free(buf);
  ^~~~
/tmp/groom.c:65:2: warning: incompatible implicit declaration of built-in function 'free'
/tmp/groom.c:65:2: note: include '<stdlib.h>' or provide a declaration of 'free'
user: uid=1001 euid=1001
baseline                : acline=0 (0x00000000)
iter 0 after socket    : acline=0 (0x00000000)
iter 1 after socket    : acline=0 (0x00000000)
iter 2 after socket    : acline=0 (0x00000000)
iter 3 after socket    : acline=0 (0x00000000)
iter 4 after socket    : acline=0 (0x00000000)
iter 5 after socket    : acline=0 (0x00000000)
iter 0 after kern.proc : acline=0 (0x00000000)
iter 1 after kern.proc : acline=0 (0x00000000)
iter 2 after kern.proc : acline=0 (0x00000000)
iter 3 after kern.proc : acline=0 (0x00000000)
iter 4 after kern.proc : acline=0 (0x00000000)
iter 5 after kern.proc : acline=0 (0x00000000)
iter 0 after fs read   : acline=0 (0x00000000)
iter 1 after fs read   : acline=0 (0x00000000)
iter 2 after fs read   : acline=0 (0x00000000)
iter 3 after fs read   : acline=0 (0x00000000)
iter 4 after fs read   : acline=0 (0x00000000)
iter 5 after fs read   : acline=0 (0x00000000)