tree 1e6820d8f09d750e1c4fce56115d35cfe3ef17e6
parent a8200613c8c9fbaf7b55d4d438376ebaf0c4ce7e
author Lee Jones <lee.jones@linaro.org> 1643120288 +0000
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1643447758 +0100

ion: Do not 'put' ION handle until after its final use

pass_to_user() eventually calls kref_put() on an ION handle which is
still live, potentially allowing for it to be legitimately freed by
the client.

Prevent this from happening before its final use in both ION_IOC_ALLOC
and ION_IOC_IMPORT.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>