On Mon, Nov 06, 2023 at 02:58:12PM +0100, mrip...@kernel.org wrote: > > But a similar thing is happening here where we have so many bogus > > warnings that we missed a real bug. > > IIRC, there was a similar discussion for lockdep issues. IMO, any > (unintended) warning should trigger a test failure. > > I guess that would require adding some intrumentation to __WARN somehow, > and also allowing tests to check whether a warning had been generated > during their execution for tests that want to trigger one.
I think this is a good idea. I was looking at how lockdep prints warnings (see print_circular_bug_header()). It doesn't use WARN() it prints a bunch of pr_warn() statements and then a stack trace. We would have to have a increment the counter manually in that situation. I'm writing a script to parse a dmesg and collect Oopses. So now I know to look for WARN(), lockdep, and KASAN. What other bugs formats do we have? Probably someone like the syzbot devs have already has written a script like this? regards, dan carpenter
