issue with secure-file-priv

[Muhammad Ali]

I am using MySQL version is 5.7.13 on CentOS release 6.7 and facing issue with SELECT ... INTO DUMPFILE as follows

/usr/bin/mysql --login-path=local MyDB -se "CALL _MyProc(@Result);SELECT @Result INTO DUMPFILE '/tmp/mysql/TempFile.txt';"
ERROR 1290 (HY000) at line 1: The MySQL server is running with the --secure-file-priv option so it cannot execute this statement

However following command works fine

/usr/bin/mysql --login-path=local MyDB -se "CALL _MyProc(@Result);SELECT @Result INTO DUMPFILE '/tmp/TempFile.txt';"

My.cnf file has entry as secure-file-priv="/"

Seems like MySQL is not able to write into sub-directories on secure-file-priv

Please help me to resolve the issue