On 28.01.21 г. 23:52 ч., Josh Poimboeuf wrote: > > With retpolines disabled, some configurations of GCC will add Intel CET > instrumentation to the kernel by default. That breaks certain tracing > scenarios by adding a superfluous ENDBR64 instruction before the fentry > call, for functions which can be called indirectly. > > CET instrumentation isn't currently necessary in the kernel, as CET is > only supported in user space. Disable it unconditionally. > > Reported-by: Nikolay Borisov <nborisov@xxxxxxxx> > Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> Tested-by: Nikolay Borisov <nborisov@xxxxxxxx> Reviewed-by: Nikolay Borisov <nborisov@xxxxxxxx>
