[Bugs] [Bug 1554235] Memory corruption is causing crashes, hangs and invalid answers

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1554235



--- Comment #2 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/19699 committed in release-4.0 by
"Shyamsundar Ranganathan" <srangana at redhat.com> with a commit message-
protocol/client: fix memory corruption

There was an issue when some accesses to saved_fds list were
protected by the wrong mutex (lock instead of fd_lock).

Additionally, the retrieval of fdctx from fd's context and any
checks done on it have also been protected by fd_lock to avoid
fdctx to become outdated just after retrieving it.

Backport of:
> BUG: 1553129

Change-Id: If2910508bcb7d1ff23debb30291391f00903a6fe
BUG: 1554235
Signed-off-by: Xavi Hernandez <xhernandez at redhat.com>

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