On Tue, 8 Nov 2022 20:52:06 +0100 Francis Laniel <flaniel@xxxxxxxxxxxxxxxxxxx> wrote: > From: Alban Crequy <albancrequy@xxxxxxxxxxxxx> > > If a page fault occurs while copying the first byte, this function resets one > byte before dst. > As a consequence, an address could be modified and leaded to kernel crashes if > case the modified address was accessed later. > > Signed-off-by: Alban Crequy <albancrequy@xxxxxxxxxxxxx> > Tested-by: Francis Laniel <flaniel@xxxxxxxxxxxxxxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Please merge via the bpf tree. This looks potentially nasty. Fortunately only tracing code uses it, but I'm thinking it should have cc:stable and a Fixes:?
