On Thu, Dec 14, 2023 at 12:24:46AM +0100, Ilya Leoshkevich wrote: > s390 uses assembly code to initialize ftrace_regs and call > kprobe_ftrace_handler(). Therefore, from the KMSAN's point of view, > ftrace_regs is poisoned on kprobe_ftrace_handler() entry. This causes > KMSAN warnings when running the ftrace testsuite. > > Fix by trusting the assembly code and always unpoisoning ftrace_regs in > kprobe_ftrace_handler(). > > Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx> > Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx> > --- > arch/s390/kernel/ftrace.c | 2 ++ > 1 file changed, 2 insertions(+) Acked-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
