[Bugs] [Bug 1659439] New: Memory leak: dict_t leak in rda_opendir

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1659439

            Bug ID: 1659439
           Summary: Memory leak: dict_t leak in rda_opendir
           Product: Red Hat Gluster Storage
           Version: 3.4
            Status: NEW
         Component: readdir-ahead
          Severity: high
          Priority: high
          Assignee: pgurusid at redhat.com
          Reporter: nbalacha at redhat.com
        QA Contact: rhinduja at redhat.com
                CC: bugs at gluster.org, rgowdapp at redhat.com,
                    rhs-bugs at redhat.com, sankarshan at redhat.com
        Depends On: 1659432
  Target Milestone: ---
    Classification: Red Hat



+++ This bug was initially created as a clone of Bug #1659432 +++

Description of problem:


rda_opendir creates and leaks a dict_t xdata_from_req

Version-Release number of selected component (if applicable):


How reproducible:

Consistently.


Steps to Reproduce:
1. Create a 1 brick volume and fuse mount it. Enable readdir-ahead.
2. Create a directory mydir in the volume root.
3. Compile the following test code and run it on the volume in a loop, while
checking RES in top output for the fuse mount process.


<code>

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <dirent.h>


int main (int argc, char *argv[])
{
        DIR *fd = NULL; 
        char *name = NULL; 

        if (argc != 2) { 
                printf ("Usage: %s <dirpath>\n", argv[0]);
                exit (1);
        }
        name = argv[1];
        fd = opendir(name);

        if (!fd) { 
                exit (1);
        }

        closedir (fd);
}

</code>





Actual results:
Memory use rises constantly.

Expected results:
Memory usage should stay constant after the initial run.

Additional info:

--- Additional comment from Nithya Balachandran on 2018-12-14 11:20:16 UTC ---

https://review.gluster.org/#/c/glusterfs/+/21859/


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1659432
[Bug 1659432] Memory leak: dict_t leak in rda_opendir
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