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binder: add flag to clear buffer on txn complete
commit 0f966cb upstream. Add a per-transaction flag to indicate that the buffer must be cleared when the transaction is complete to prevent copies of sensitive data from being preserved in memory. Signed-off-by: Todd Kjos <tkjos@google.com> Link: https://lore.kernel.org/r/20201120233743.3617529-1-tkjos@google.com Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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