[Bugs] [Bug 1633930] ASan (address sanitizer) fixes - Blanket bug

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1633930



--- Comment #14 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/21399 committed in master by "Amar Tumballi"
<amarts at redhat.com> with a commit message- glusterd/geo-rep: Fix memory
corruption

Problem and Analysis:
The length of canonical format of uuid is 36 but
'GF_UUID_BUF_SIZE 50' was being used everywhere.
glusterd/geo-rep code was earlier using strncpy,
but recently changes to memcpy with the drive
to avoid strncpys. This leads to memory corruption
and glusterd is crashing without a core with geo-rep
creation with ASAN build.

Fix:
'GF_UUID_BUF_SIZE 37' (+ 1 for NULL byte)
And change geo-rep to use UUID_CANONICAL_FORM_LEN
instead

Updates: bz#1633930
Change-Id: Ibd347d542b92e64a96ce06780cda643557233bc7
Signed-off-by: Kotresh HR <khiremat at redhat.com>

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