Hi Kees,
On Tue, 1 Dec 2020 16:48:55 -0800
Kees Cook wrote:
> Hi,
>
> There appears to be a problem with prefix counting for the instruction
> decoder. It looks like insn_get_prefixes() isn't keeping "nb" and "nbytes"
> in sync correctly:
>
> while (inat_is_legacy_prefix(attr)) {
>
Hi,
There appears to be a problem with prefix counting for the instruction
decoder. It looks like insn_get_prefixes() isn't keeping "nb" and "nbytes"
in sync correctly:
while (inat_is_legacy_prefix(attr)) {
/* Skip if same prefix */
for (i = 0; i < nb; i++)
syzbot has bisected this issue to:
commit 4b2bd5fec007a4fd3fc82474b9199af25013de4c
Author: John Stultz
Date: Sat Oct 8 00:02:33 2016 +
proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1697348d90
start commi
