On Tue, May 26, 2020 at 02:58:50PM -0400, Qian Cai wrote: > I still don't understand why reading all sysfs files on this system > could increase that much, but here is the lockdep file after > running sysfs read to see if you could spot anything obviously, > > https://cailca.github.io/files/lockdep.txt
00000000f011a2a5 OPS: 20 FD: 45 BD: 1 .+.+: kn->active#834 is that somewhere near the number of CPUs you have? Anyway, there's very long "kn->active#..." chains in there, which seems to suggest some annotation is all sorts of buggered.
