Hi, On (02/16/19 15:59), Yao HongBo wrote: > > GFP_NOWARN is probably the best option for now. Yes, it, maybe, > > will not work for fault-injection cases; but printk_safe approach > > is harder to push for, especially given that printk_safe maybe will > > not even exist in the future. > > I have tried GFP_NOWARN, but the problem still exists. > Only print_safe contexts for tty locks can solve the problem. > My test scenario is falt-injection.
Oh, I see. Yes, fault-injection is special. I suspect that this patch series can be helpful then https://lore.kernel.org/lkml/20181016050428.17966-1-sergey.senozhat...@gmail.com/T/#u but first we need to figure out if printk_safe will stay in the kernel (this will take some time). -ss
