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In ahci_exec() we attempt to permit the caller to pass a NULL pointer
for opts_in (in which case we use a default set of options). However
although we check for NULL when setting up the opts variable at the
top of the function, we unconditionally dereference opts_in at the
end of the function as part of freeing the opts->buffer.
Switch to checking whether the final buffer is the same as the
buffer we started with, instead of assuming the value we started
with is always opts_in->buffer.
At the moment all the callers pass a non-NULL opts argument, so
we never saw any crashes in practice.
Fixes: Coverity CID 1432302
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20201103115257.23623-1-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The qos stuff belongs to qtest, so move it into that directory, too.
Message-Id: <20191218103059.11729-8-thuth@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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