Hi Paul, On Tue, 22 Aug 2017 11:59:23 -0700 "Paul E. McKenney" <paul...@linux.vnet.ibm.com> wrote: > > On Wed, Aug 23, 2017 at 04:14:24AM +1000, Stephen Rothwell wrote: > > Hi all, > > > > On Wed, 23 Aug 2017 04:11:17 +1000 Stephen Rothwell <s...@canb.auug.org.au> > > wrote: > > > > > > This tree fails to boot on my qemu test. 2 boot logs attached. > > > > > > Paul, Nick, is this the same/similar to the other RCU/lockup bug you > > > are chasing. This is the first time I have seen this failure. > > > > > > This qemu boot is in full emulation mode if I add --enable-kvm to the > > > qemu command, it does not fail to boot. (the test just boots and then > > > shuts down) > > > > Boot logs attached this time. > > That does not look good! > > Given that the hard lockup happened during timer lock acquisition, I > have to ask if you built with lockdep...
$ grep LOCKDEP .config CONFIG_LOCKDEP_SUPPORT=y so, no. This is just a powerpc pseries_le_defconfig build. -- Cheers, Stephen Rothwell
