Re: Default enable RCU list lockdep debugging with PROVE_RCU

[Qian Cai]

> On May 14, 2020, at 8:25 AM, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> 
> Hi Paul,
> 
> This patch in the rcu tree
> 
>  d13fee049fa8 ("Default enable RCU list lockdep debugging with PROVE_RCU")
> 
> is causing whack-a-mole in the syzbot testing of linux-next.  Because
> they always do a debug build of linux-next, no testing is getting done. :-(
> 
> Can we find another way to find all the bugs that are being discovered
> (very slowly)?

Alternatively, could syzbot to use PROVE_RCU=n temporarily because it canât keep up with it? I personally found PROVE_RCU_LIST=y is still useful for my linux-next testing, and donât want to lose that coverage overnight.