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mimic: cephfs: client: fix bad error handling in _lookup_parent #29609
ll_lookup_inode can end up getting back 0 from _lookup_parent, without zeroing out the parent pointer, which ends up remaining uninitialized. Fix this by moving most of the sanity checks in _lookup_parent into ll_lookup_inode, and only have it issue the call to the MDS. This also allows us to do the checks in a more sane order. Fixes: http://tracker.ceph.com/issues/40085 Signed-off-by: Jeff Layton <firstname.lastname@example.org> (cherry picked from commit 3ade7c0) Conflicts: src/client/Client.cc - Mutex::Locker -> std::lock_guard - changed some asserts to ceph_asserts
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