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mon: prevent new sessions during shutdown#44337

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liewegas merged 1 commit intoceph:masterfrom
liewegas:fix-39150
Dec 17, 2021
Merged

mon: prevent new sessions during shutdown#44337
liewegas merged 1 commit intoceph:masterfrom
liewegas:fix-39150

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@liewegas liewegas commented Dec 16, 2021

From shutdown() we set STATE_SHUTDOWN and then call remove_all_sessions().
ms_handle_accept() is the only caller of add_session, so verifying that
we aren't shutting down (while under the session_map_lock) is sufficient
to prevent any new sessions from being added.

Fixes: https://tracker.ceph.com/issues/39150

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From shutdown() we set STATE_SHUTDOWN and then call remove_all_sessions().
ms_handle_accept() is the only caller of add_session, so verifying that
we aren't shutting down (while under the session_map_lock) is sufficient
to prevent any new sessions from being added.

Fixes: https://tracker.ceph.com/issues/39150
Signed-off-by: Sage Weil <sage@newdream.net>
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