On 2020-04-02 11:40:52 [+0200], Thomas Gleixner wrote: > kernel test robot <lkp@xxxxxxxxx> writes: > > Greetings, > > > > 0day kernel testing robot got the below dmesg and the first bad commit is > > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > > > > commit de8f5e4f2dc1f032b46afda0a78cab5456974f89 > > Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > AuthorDate: Sat Mar 21 12:26:01 2020 +0100 > > Commit: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > CommitDate: Sat Mar 21 16:00:24 2020 +0100 > > > > lockdep: Introduce wait-type checks > > Can you please avoid enabling > > > CONFIG_PROVE_RAW_LOCK_NESTING=y > > for now? > > As the changelog states, there are known issues and that's why the > config is default=n. There is that. What puzzled me for a little while was the part that the call chain itself is *valid* and should not trigger this. After staring at it for a while I noticed that the test was performed *before* the hrtimer bits were merged. > Thanks, > > tglx Sebastian