commit c7cad0d6f70cd upstream
(“tipc: move linearization of buffers to generic code”)
was applied to net-next in November 2015, and is present in kernel
versions from 4.5.x onwards.
We later discovered that this commit also fixes a serious bug, since
even L2 buffers may arrive non-linearized. Hence, in 4.4.x kernels we
often see debug printouts like this:
[880.688856] Dropping name table update (0) of {1651649891, 1819082752, 0} from
<1.1.1> key=402710022
[880.688862] Dropping name table update (0) of {4029808599, 2711729614,
1639218685} from <1.1.1> key=18102394
[880.688865] Dropping name table update (0) of {134218495, 4278191616,
100669184} from <1.1.1> key=0
Those are symptoms of the binding table having received "corrupt"
publications read linearly from non-linear buffers. The above listed
commit solves this problem, and should be applied even to 4.4 kernels.
2.7.4
