13 Sep
2018
13 Sep
'18
12:35 p.m.
On Tue, Sep 04, 2018 at 01:43:04AM +0300, Tomas Winkler wrote:
From: Dan Carpenter dan.carpenter@oracle.com
commit b40b3e9358fbafff6a4ba0f4b9658f6617146f9c upstream
We accidentally removed the check for negative returns without considering the issue of type promotion. The "if_version_length" variable is type size_t so if __mei_cl_recv() returns a negative then "bytes_recv" is type promoted to a high positive value and treated as success.
Cc: stable@vger.kernel.org # 4.4
I also need a version of this patch for 4.18.y, 4.14.y, and 4.9.y before I will consider adding it to 4.4.y, as we do not want anyone to ever get a regression moving to a new kernel.
thanks,
greg k-h