FIXME: possible crash due to resched triggered by put_files_struct()

When parent process is exiting, the last put_files_struct() would try
to drop all files which triggers a resched(). In get_process_socket()
it will access the files tables of the process which is being exit,
and thus trigger the resched() in atomic context.

Signed-off-by: shenping.matt <[email protected]>

driver/LKM/src/smith_hook.c

@@ -60,7 +60,7 @@ int FAKE_RM = 0;
 
 int PID_TREE_LIMIT = 12;
 int PID_TREE_LIMIT_LOW = 8;
-int EXECVE_GET_SOCK_PID_LIMIT = 4;
+int EXECVE_GET_SOCK_PID_LIMIT = 1;  /* put_files_struct() could reschedule */
 int EXECVE_GET_SOCK_FD_LIMIT = 12;  /* maximum fd numbers to be queried */
 
 char connect_syscall_kprobe_state = 0x0;