tree 34d3fff7b8481767613f8e4dd925721a82dd1550
parent a7af2e087e642083af7efe637e163a1408306ecd
author Michael Shen <gpgpgp@google.com> 1650947687 +0000
committer Brandon Kim <brandonkim@google.com> 1650989524 +0000

metrics-ipmi-blobs: Fix memory leak with readMem

Add `munmap` after `mmap` succeeded.
Otherwise it might cause memory after 65500+ times.

Tested:
(Provided by @suichen)
```
Without munmap:

/tmp# ./mmap_test
...
65100 mmaps
65200 mmaps
65300 mmaps
65400 mmaps
65500 mmaps
ERR: 12
ERROR with 65503 mmaps
ERR: 12

-----------------------------------------------------------------
With unmap:

/tmp# WITH_UNMAP=1 ./mmap_test
...
161700 mmaps
161800 mmaps
161900 mmaps
162000 mmaps
162100 mmaps
162200 mmaps
...
```

Signed-off-by: Michael Shen <gpgpgp@google.com>
Change-Id: Ie68d4f42337ca3459ae60dc1f649ed1b25631b17